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ID:8463784
大小:1.51 MB
页数:33页
时间:2018-03-28
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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
2、材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····························1
3、91.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CA10B19.460.851
5、900黄河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
6、后轴距≤3,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
7、河JN362(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.
8、28118.59.18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.
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