A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Expansive soil core filling embankment design method
The invention relates to a method for designing an expansive soil core-filled embankment, which comprises the following steps of: determining the relationship between expansive force and water content through an expansive force test of expansive soil, and researching the relationship between the internal volumetric water content of the expansive soil core-filled embankment in a plum rain season and the edge covering thickness H and the compaction coefficient K by utilizing a numerical simulation method; and determining the expansive force development condition of the core filling expansive soil by combining the expansive force test result of the expansive soil. And finally, by insisting on the principles of saving materials and reducing waste, determining a proper edge covering thickness H and a proper compaction coefficient K by ensuring that constraint loads in the plum rain period are all greater than expansive force generated by the filling core expansive soil, and verifying whether the proposed design scheme meets standard requirements or not. According to the method, the problems that the design theoretical basis of the expansive soil core-filled embankment in the plum rain climate area is insufficient and the design method is lacked are effectively solved, the expansive soil is excavated by fully utilizing the roadbed engineering of the expansive soil area, the catastrophe probability of the expansive soil embankment in the plum rain climate area is greatly reduced, and the line operation and maintenance cost can be remarkably reduced.
本发明涉及一种膨胀土填芯路堤设计方法，通过膨胀土的膨胀力试验确定膨胀力与含水量的关系，再利用数值仿真方法研究梅雨季节膨胀土填芯路基内部体积含水量与包边厚度H及压实系数K的关系，并结合膨胀土的膨胀力试验结果确定填芯膨胀土膨胀力发育情况。最后，坚持节约用料、减少浪费的原则，通过保证梅雨期内约束荷载都大于填芯膨胀土产生的膨胀力，来确定合适的包边厚度H及压实系数K，并验证提出的设计方案是否满足规范要求。本发明有效解决了梅雨气候区膨胀土填芯路堤设计理论依据不足，设计方法缺失的问题，充分利用膨胀土地区路基工程挖方膨胀土，大大降低了梅雨气候区膨胀土路堤发生灾变的概率，能显著降低线路营运维护成本。
Expansive soil core filling embankment design method
The invention relates to a method for designing an expansive soil core-filled embankment, which comprises the following steps of: determining the relationship between expansive force and water content through an expansive force test of expansive soil, and researching the relationship between the internal volumetric water content of the expansive soil core-filled embankment in a plum rain season and the edge covering thickness H and the compaction coefficient K by utilizing a numerical simulation method; and determining the expansive force development condition of the core filling expansive soil by combining the expansive force test result of the expansive soil. And finally, by insisting on the principles of saving materials and reducing waste, determining a proper edge covering thickness H and a proper compaction coefficient K by ensuring that constraint loads in the plum rain period are all greater than expansive force generated by the filling core expansive soil, and verifying whether the proposed design scheme meets standard requirements or not. According to the method, the problems that the design theoretical basis of the expansive soil core-filled embankment in the plum rain climate area is insufficient and the design method is lacked are effectively solved, the expansive soil is excavated by fully utilizing the roadbed engineering of the expansive soil area, the catastrophe probability of the expansive soil embankment in the plum rain climate area is greatly reduced, and the line operation and maintenance cost can be remarkably reduced.
本发明涉及一种膨胀土填芯路堤设计方法，通过膨胀土的膨胀力试验确定膨胀力与含水量的关系，再利用数值仿真方法研究梅雨季节膨胀土填芯路基内部体积含水量与包边厚度H及压实系数K的关系，并结合膨胀土的膨胀力试验结果确定填芯膨胀土膨胀力发育情况。最后，坚持节约用料、减少浪费的原则，通过保证梅雨期内约束荷载都大于填芯膨胀土产生的膨胀力，来确定合适的包边厚度H及压实系数K，并验证提出的设计方案是否满足规范要求。本发明有效解决了梅雨气候区膨胀土填芯路堤设计理论依据不足，设计方法缺失的问题，充分利用膨胀土地区路基工程挖方膨胀土，大大降低了梅雨气候区膨胀土路堤发生灾变的概率，能显著降低线路营运维护成本。
Expansive soil core filling embankment design method
一种膨胀土填芯路堤设计方法
XU CHONGYANG (author) / AN ZHENGJUN (author) / WANG CHAO (author) / YANG TAO (author) / JIN HAIPENG (author) / LIU XIAOSHUANG (author) / JIA GUOHUI (author) / LI PANPAN (author) / CHEN SHIZHAO (author) / ZHU XUBIN (author)
2024-10-01
Patent
Electronic Resource
Chinese
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