道路工程_课程设计

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1、目录一、新建沥青混凝土路面设计····························21.交通分析及设计弯沉值的确定·····························21.1轴载分析·········································21.2路面设计弯沉值的计算·······························72.土基回弹模量的确定························83.结构组合与材料的初选定······························84.各层材

2、料抗压模量与劈裂强度的确定····················85.设计指标的确定································96.设计资料总结·········································107.确定石灰煤渣矿渣层厚度································1132二、旧路面（沥青混凝土路面）补强设计····························15三、新建水泥混凝土路面设计····························191

3、.交通分析·····································192.初拟路面结构··························223.路面材料参数确定·····························234.荷载疲劳应力计算·····························245.温度疲劳应力计算·····························246.应力复合······································25四、相关图纸·············

4、·······································26五、心得体会····················································30六、主要参考资料·················································3132一、新建沥青混凝土路面设计1、交通分析及设计弯沉值的确定。1.1轴载分析设计年限内一个车道的累计当量轴次数计算（确定路面等级）。车型总重（KN）后轴重（KN）后轴数辆/日解放CA10B19.460.851900黄

5、河JN15049101.61360日野KB22250.2104.31123太脱拉13851.4802（轴距≤3）74东风KM34024.667.811030黄河JN36263127121日野FC16423.97113501.1.1当以设计弯沉值为指标及沥青层层底拉应力验算时，各级轴载Pi的作用次数ni，匀应按下式换算成标准轴载P的当量作用次数N。匀应按下式换算成标准轴载P的当量作用次数N。根据《公路沥青路面设计规范》公式3.1.2-1①解放CA10B（次）②黄河JN150（次）32③日野KB222（次）④太脱拉138由于后轴距≤3

6、，故=1+1.2（m-1）=2.2（次）⑤东风KM340（次）⑥黄河JN362（次）⑦日野FC164（次）N总=108.30+489.21+187.00+87.86+204.75+77.41+83.32=1237.85（次）1.1.2当进行半刚性基层层底拉应力验算时，各级轴载Pi的作用次数ni，匀应按下式换算成标准轴载P的当量作用次数N‘。按《道路公程》2.3.7得32①解放CA10B（次）②黄河JN150（次）③日野KB222（次）④太脱拉138由于后轴距≤3，故=1+2（m-1）=3（次）⑤东风KM340（次）⑥黄河JN362

7、（次）⑦日野FC16432（次）N总=16.95+430.88+181.44+43.92+46.25+151.76+22.67=893.87（次）1.1.3N和N'汇总得下表：车型Pi(kn)ni(辆/日)N（次）（次）C1C2C'1C'2解放CA10B前轴19.490016.44.60118.50.03后轴60.8590011103.701116.92黄河JN150前轴4936016.4103.47118，522.13后轴101.636011385.7411408.75日野KB222前轴50.212316.439.28118.5

8、9.18后轴104.312311147.7211172.26太脱拉138前轴51.47416.426.19118.56.67后轴80742.2161.673137.25东风KM340前轴24.6103016.414.78118.50.26后轴67.