20春学期《路基路面工程》在线平时作业1

adminhan

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-font-kerning: 0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: 宋体">在石灰粉煤灰（简称二灰）基层中，为了防止裂缝，采用石灰与粉煤灰的配比为<span lang="EN-US">1:3</span>～<span lang="EN-US">1:4</span>，集料含量为（<span lang="EN-US">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span>）左右为最佳，既可抗干缩又可抗温缩。</span><p><span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri; mso-bidi-font-family: 'Times New Roman'; mso-bidi-font-size: 11.0pt; mso-ascii-theme-font: minor-latin; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-latin; mso-bidi-theme-font: minor-bidi"></span></p>
A:80%
B:<p>80%~85%</p>
C:85%
D:85%~90%

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-font-kerning: 0pt">水泥混凝土路面的设计使用年限：为路面达到预定损坏标准时所能使用的年限。一般使用年限为（</span><span style="FONT-FAMILY: 'Calibri','sans-serif'; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-font-kerning: 0pt; mso-fareast-font-family: 宋体; mso-ascii-font-family: 宋体" lang="EN-US">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-font-kerning: 0pt">）年。若确定很长的使用年限，则远景交通量很难估计准确，而且会使初期建设投资过高。因此，从建设长远利益出发，为了节省更多的投资应采用合理的设计使用年限。在特殊情况下，水泥混凝土路面可根据使用要求确定设计使用年限。但超过此年限路面并非完全破坏而不能使用，只是其使用性能太差和运行费用过高。</span>
A:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-font-kerning: 0pt" lang="EN-US">20-40</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-font-kerning: 0pt">年</span>
B:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-font-kerning: 0pt" lang="EN-US">20-30</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-font-kerning: 0pt">年</span>
C:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-font-kerning: 0pt" lang="EN-US">20-25</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-font-kerning: 0pt">年</span>
D:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-font-kerning: 0pt" lang="EN-US">15-20</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-font-kerning: 0pt">年</span>

<strong>沥青路面随着使用时间的延续，其使用性能和承载能力不断降低，超过设计使用年限后便不能满足正常行车交通要求，而需补强或改建。路面补强设计工作包括现有（<span><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>）。</span></strong>
A:<strong><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">路面结构状况调查</span></strong>
B:<strong><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">路面弯沉评定</span></strong>
C:<strong><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">路面弯拉评定</span></strong>
D:<strong><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">路面补强厚度计算</span></strong>

<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">在沙漠地带修筑公路，我们一般采用的边沟形式是<u><span lang="EN-US">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; </span></u>。</span>
A:<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">梯形边沟</span>
B:<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">矩形边沟</span>
C:<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">流线型边沟</span>
D:<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">三角形边沟</span>

<strong>路基防护加固工程中，把防止路基或山体因重力作用而坍滑，地基承载力不足而沉陷，主要起（<span><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>）作用的结构物称为加固工程。</span></strong>
A:<strong><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">支承</span></strong>
B:<strong><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">加固</span></strong>
C:<strong><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">疏干排水</span></strong>
D:<strong><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">减重</span></strong>

<strong>按水力计算特点，沟渠横断面设计方法可分为：（<span><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>），这些方法可以分别采用，必要时亦可综合选用。</span></strong>
A:<strong><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">选择法</span></strong>
B:<strong><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">试算法</span></strong>
C:<strong><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">分析法</span></strong>
D:<strong><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">最佳横断面法</span></strong>

<strong>路基排水沟的加固类型有多种，沟渠加固类型设计时可结合当地条件，根据沟渠（<span><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>）等而定。</span></strong>
A:<strong><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">土质</span></strong>
B:<strong><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">水流速度</span></strong>
C:<strong><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">沟底纵坡</span></strong>
D:<strong><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">使用要求</span></strong>

<strong>中央分隔带排水是高速公路及一级公路地表排水的重要内容，应根据分隔带宽度、绿化和交通安全设施的形式和分隔带表面的处理等因素选择不同的排水方式。我国的《公路排水设计规范》将中央分隔带排水划分为（<span><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>）类型：</span></strong>
A:<strong><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">宽度小于<span lang="EN-US">3m</span>且表面采用铺面封闭的中央分隔带排水</span></strong>
B:<strong><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">宽度大于<span lang="EN-US">3m</span>且表面未采用铺面封闭的中央分隔带排水</span></strong>
C:<strong><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">表面无铺面且未采用表面排水措施的中央分隔带</span></strong>
D:<strong><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">较窄的中央分隔带</span></strong>

<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">挡土墙后采用哪种填料时，需在墙背设置砂卵石反滤层<u><span lang="EN-US">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; </span></u>。</span>
A:<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">粘性土</span>
B:<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">粉性土</span>
C:<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">砂卵石</span>
D:<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">碎砖烂瓦</span>

<span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">公路路基是路面的基础，是公路工程的重要组成部分，路基必须主要具有足够的(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; )。</span>
A:<p><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">强度</span></p>
B:<p><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">稳定性</span></p>
C:<p><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">刚度</span></p>
D:<p><span style="FONT-SIZE: 12pt; COLOR: #000099; FONT-FAMILY: 楷体_GB2312; mso-hansi-font-family: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">耐久性</span></p>

<strong>要判断现有路面结构的承载能力（剩余寿命），除了由测定得到代表弯沉值外，还须知道路面结构类型、路面损坏状况以及到调查测定时路面已承受的标准轴载作用次数。（<span><span>&nbsp;&nbsp;&nbsp; </span>）</span></strong>
A:错误
B:正确

<strong>路面抗滑表层粗集料应选用坚硬、耐磨、抗冲击性好的碎石，不得使用筛选砾石、矿渣及软质集料。用于高速公路、一级公路沥青路面表面层及各类抗滑表层的粗集料应符合规定的石料磨光值要求。（<span><span>&nbsp;&nbsp;&nbsp; </span>）</span></strong>
A:错误
B:正确

<strong>沥青混合料的抗拉强度，可用直接拉伸试验或间接拉伸&mdash;劈裂试验测定。（<span><span>&nbsp;&nbsp;&nbsp; </span>）</span></strong>
A:错误
B:正确

<strong>路面行驶质量同路表面的不平整度、车辆的动态响应和人的感受能力三方面因素有关。不同的乘客乘坐同一辆车行驶在同一个路段上，对该路段的行驶质量会作出不同的评价。（<span><span>&nbsp;&nbsp;&nbsp; </span>）</span></strong>
A:错误
B:正确

<span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">路面单位宽度上受到的轮载作用次数同车道宽度范围内轴载总作用次数之比，称为轮迹横向分布系数。（<span lang="EN-US">&nbsp;<span style="mso-spacerun: yes">&nbsp; </span>&nbsp;</span>）</span>
A:错误
B:正确

土基路堤分为上路堤、中路堤、下路堤（<span>&nbsp;）。</span>
A:错误
B:正确

<strong>按施工工艺沥青路面可分为层铺法、路拌法和厂拌法三类。（<span><span>&nbsp;&nbsp;&nbsp; </span>）</span></strong>
A:错误
B:正确

<strong>衡重式挡土墙的构造，通常墙胸多采用<span>1:0.05的陡坡，上墙墙背坡率采用1:0.25-1:0.45之间，下墙墙背坡率采用1:0.25，上下墙高比采用2:3。（<span>&nbsp;&nbsp;&nbsp; </span>）</span></strong>
A:错误
B:正确

<strong>由于无机结合料稳定材料的刚度介于柔性路面材料和刚性路面材料之间，常称此为半刚性材料，以此修筑的基层或底基层亦称为半刚性基层（底基层）。（<span><span>&nbsp;&nbsp;&nbsp; </span>）</span></strong>
A:错误
B:正确

<strong>土&mdash;碎（砾）石混合料类材料含土少时，是按嵌挤原则形成强度；当含土量较多时，则按密实原则形成强度。（<span><span>&nbsp;&nbsp;&nbsp; </span>）</span></strong>
A:错误
B:正确