邻近刚性桩复合地基支挡结构土压力计算  

Calculation of Retaining Structure Soil Pressure of Adjacent Rigid Pile Composite Foundation

作　　者：魏艳卿 刘翠然[1] 林宇豪 WEI Yanqing;LIU Cuiran;LIN Yuhao(Luoyang Institute of Science and Technology,Luoyang 471000,Henan,China)

机构地区：[1]洛阳理工学院,河南洛阳471000

出　　处：《黄河水利职业技术学院学报》2023年第4期24-30,共7页Journal of Yellow River Conservancy Technical Institute

基　　金：河南省高等学校重点科研项目:邻近刚性桩复合地基支挡结构土压力影响机制与简化计算(20B560011);河南省科技攻关项目:库区水盐环境下预应力BFRP锚杆锚固体系耐久性关键技术研究(232102321002)。

摘　　要：为了探讨刚性桩复合地基对邻近支挡结构土压力的影响,找出此复杂工况下支挡结构土压力的合理计算方法。基于刚性桩复合地基荷载传递机理,结合Mindlin解、Boussinesq解以及应力叠加原理,分析了考虑复合地基荷载传递效应的邻近支挡结构附加土压力简化弹性解法,确定了邻近刚性桩复合地基支挡结构土压力的计算方法,并将计算结果与模型试验结果进行了对比分析。结果表明,将复合地基对邻近支挡结构土压力的影响进行分部、分区域计算比较符合刚性桩复合地基的荷载传递机理,且用该方法计算的土压力和附加土压力与模型试验结果匹配性较好,并且较为安全。In order to discuss the influence of rigid pile composite foundation on soil pressure of adjacent retaining structure,a reasonable calculation method of soil pressure of retaining structure under this complex working condition is found.Based on the load transfer mechanism of rigid pile composite foundation,combined with Mindlin solution,Boussinesq solution and stress superposition principle,the simplified elastic solution of additional earth pressure of adjacent retaining structure of composite foundation load transfer effect was analyzed,and the calculation method of earth pressure of adjacent retaining structure of rigid pile composite foundation was determined.The calculation results are compared with the model test results.The results show that the load transfer mechanism of rigid pile composite foundation can be well considered by subdivision and subregion calculation of the influence of composite foundation on the soil pressure of adjacent retaining structures,and the additional soil pressure and soil pressure calculated by this method are in good agreement with the model test results,and are safe.

关 键 词：刚性桩复合地基 支挡结构 土压力 附加土压力 弹性解法 荷载传递机理 

分 类 号：TU942[建筑科学—建筑技术科学]