20春学期《钢结构（二）》在线平时作业1

adminhan

<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">钢材脆性破坏同构件</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">______</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">无关。</span>
A:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">应力集中</span>
B:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">低温影响</span>
C:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">残余应力</span>
D:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">弹性模量</span>

<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">为防止钢构件中的板件失稳而设置加劲肋，这一做法是为了</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">______</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">。</span>
A:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">改变板件的宽厚比</span>
B:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">增大截面面积</span>
C:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">改变截面上的应力分布状态</span>
D:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">增加截面的惯性矩</span>

<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">分析焊接工字形钢梁腹板局部稳定时，腹板与翼缘相接处可简化为</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">______</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">。</span>
A:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">自由边</span>
B:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">简支边</span>
C:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">固定边</span>
D:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">有转动约束的支承边</span>

<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">关于螺栓和铆钉连接，下列说法中</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">_________</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">为错误的。</span>
A:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">每一杆件在节点上以及拼接接头的一端，永久性螺栓数不宜少于两个</span>
B:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">在高强度螺栓连接范围内，构件接触面的处理方法应在施工图上说明</span>
C:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">对直接承受动力荷载的普通螺栓受拉连接应采用双螺母或其他能防止螺母松动的有效措施</span>
D:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">普通螺栓可以用于直接承受动力荷载的受剪连接</span>

&nbsp; 钢结构在搭接连接中，搭接的长度不得小于焊件较小厚度的<u><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></u>。
A:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">4</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">倍，并不得小于</span><st1:chmetcnv w:st="on" unitname="mm" sourcevalue="20" hasspace="False" negative="False" numbertype="1" tcsc="0"><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">20mm</span></st1:chmetcnv>
B:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">5</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">倍，并不得小于</span><st1:chmetcnv w:st="on" unitname="mm" sourcevalue="25" hasspace="False" negative="False" numbertype="1" tcsc="0"><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">25mm</span></st1:chmetcnv>
C:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">6</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">倍，并不得小于</span><st1:chmetcnv w:st="on" unitname="mm" sourcevalue="30" hasspace="False" negative="False" numbertype="1" tcsc="0"><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">30mm</span></st1:chmetcnv>
D:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">7</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">倍，并不得小于</span><st1:chmetcnv w:st="on" unitname="mm" sourcevalue="35" hasspace="False" negative="False" numbertype="1" tcsc="0"><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">35mm</span></st1:chmetcnv>

<img width="964" height="108" alt="" src="http://file.open.com.cn/ItemDB/65637/7e9b2858-8d13-425b-bc10-da8aa1dcca9f/20103122101163.jpg" />&nbsp;
A:A
B:B
C:C
D:D

<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">角钢和钢板间用侧面角焊缝搭接连接，当角钢肢背与肢尖焊缝的焊脚尺寸和焊缝的长度都等同时，</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">______</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">。</span>
A:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">角钢肢背的侧面角焊缝与角钢肢尖的侧面角焊缝受力相等</span>
B:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">角钢肢尖侧面角焊缝受力大于角钢肢背的侧面角焊缝</span>
C:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">角钢肢背的侧面角焊缝受力大于角钢肢尖的侧面角焊缝</span>
D:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">由于</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: 'Times New Roman'">角钢</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">肢背和肢尖的侧焊缝受力不相等，因而连接受有弯矩的作用</span>

<img width="988" height="76" alt="" src="http://file.open.com.cn/ItemDB/65637/fe7bcaa3-f6e8-42a5-95ab-e843ecfeb981/201031234823370.jpg" />&nbsp;
A:0.8
B:0.7
C:0.6
D:0.5

<img width="800" height="102" alt="" src="http://file.open.com.cn/ItemDB/65637/952483bb-662c-4765-8ba8-05b8de2616d9/20103121834998.jpg" />&nbsp;
A:6
B:8
C:10
D:12

<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">为了提高荷载作用在上翼缘的简支工字形梁的整体稳定性，可在梁的</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">______</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">加侧向支撑，以减小梁出平面的计算长度。</span>
A:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">梁腹板高度的</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">1/2</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">处</span>
B:靠近梁下翼缘的腹板(<span>1/5~1/4</span>)<em>h</em>₀处
C:靠近梁上翼缘的腹板（1/5~1/4）<em>h</em>₀处
D:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">受压翼缘处</span>

<img width="914" height="48" alt="" src="http://file.open.com.cn/ItemDB/65637/0c20328a-bedf-4e17-9e41-f04d12f38816/201031232646236.jpg" />&nbsp;
A:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">验算截面中的最大正应力和最大剪应力</span>
B:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">验算截面中的最大正应力和验算点的剪应力</span>
C:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">验算截面中的最大剪应力和验算点的正应力</span>
D:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">验算截面中验算点的剪应力和的正应力</span>

<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">钢梁腹板局部稳定采用</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">________</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">准则。</span>
A:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">腹板局部屈曲应力不小于构件整体屈曲应力</span>
B:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">腹板实际应力不超过腹板屈曲应力</span>
C:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">腹板实际应力不小于板的</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">f_y</span>
D:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">腹板局部临界应力不小于钢材屈服应力</span>

<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">对于直接承受动力荷载的结构，下列荷载取值正确的是</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">______</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">。</span>
A:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">在计算强度时，动力荷载设计值应乘以动力系数；在计算稳定性、疲劳和变形时，动力荷载标准值不应乘以动力系数</span>
B:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">在计算强度和稳定性时，动力荷载设计值应乘以动力系数；在计算疲劳和变形时，动力荷载设计值不应乘以动力系数</span>
C:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">在计算强度、稳定性和疲劳时，动力荷载设计值应乘以动力系数；在计算变形时，动力荷载标准值不应乘以动力系数</span>
D:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">在计算强度和稳定性时，动力荷载设计值应乘以动力系数；在计算疲劳和变形时，动力荷载标准值不应乘以动力系数</span>

<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">型钢中的</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">H</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">钢和工字钢相比，</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">______</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">。</span>
A:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">两者所用的钢材不同</span>
B:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">前者的翼缘相对较宽</span>
C:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">前者的强度相对较高</span>
D:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">两者的翼缘都有较大的斜度</span>

<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">承压型高强度螺栓可用于</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">___________</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">。</span>
A:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">直接承受动力荷载</span>
B:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">承受反复荷载作用的结构的连接</span>
C:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">冷弯薄壁型钢结构的连接</span>
D:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">承受静力荷载或间接承受动力荷载结构的连接</span>

<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">钢材的冷作硬化，使</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">___________</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">。</span>
A:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">强度提高，塑性和韧性下降</span>
B:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">强度、塑性和韧性均提高</span>
C:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">强度、塑性和韧性均降低</span>
D:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">塑性降低，强度和韧性提高</span>

<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">某构件发生了脆性破坏，经检查发现在破坏时构件内存在下列问题，但可以肯定其中</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">______</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">对该破坏无直接影响。</span>
A:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">钢材的屈服点不够高</span>
B:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">构件的荷载变化速度过快</span>
C:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">存在冷加工硬化</span>
D:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">构件有构造原因引起的应力集中</span>

<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">钢材在低温下，强度</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">_______</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">。</span>
A:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">提高</span>
B:<p>下降</p>
C:不变
D:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">可能提高也可能下降</span>

<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">在直接受动力荷载作用的情况下，下列情况中采用</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">______</span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">连接方式最为适合。</span>
A:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">角焊缝</span>
B:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">普通螺栓</span>
C:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">对接焊缝</span>
D:<span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">高强螺栓</span>

<img width="981" height="136" alt="" src="http://file.open.com.cn/ItemDB/65637/0ed7572f-07dc-4cb8-969a-837ef2b4f491/2010312347219.jpg" />&nbsp;
A:A
B:B
C:C
D:D