宋〓征1,张书华1,严学清2.挡墙地震主动土压力计算及其影响因素分析[J].水电能源科学,2018,36(10):113-116
挡墙地震主动土压力计算及其影响因素分析
Calculation of Seismic Active Earth Pressure of Retaining Wall and Its Influencing Factors Analysis
  
DOI:
中文关键词:  土体应力状态  地震主动土压力  侧土压力系数  土压力分布  合力作用位置
英文关键词:soil stress state  seismic active earth pressure  lateral earth pressure coefficient  earth pressure distribution  position of resultant force
基金项目:国家自然科学基金项目(41372297)
作者单位
宋〓征1,张书华1,严学清2 1. 三峡大学科技学院 土木水电学部 湖北 宜昌 443002 2. 三峡大学 土木与建筑工程学院 湖北 宜昌 443002 
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中文摘要:
      鉴于Mononobe Okabe理论应用于实际工程地震土压力计算时仅适用于无粘性土,在Mononobe Okabe理论的基础上,分析了墙后土体的应力状态,推导了粘性和无粘性土地震主动土压力及主动土压力系数计算表达式,并结合算例分析了不同情况下土压力的分布特性。同时指出土压力的大小及分布主要与墙背土体参数和破裂面倾角假定有关,土压力合力作用位置随墙背摩擦角增大而上移,随地震角的增大而下移。
英文摘要:
      Since calculation of seismic soil pressure with the Mononobe Okabe theory was only applicable to the cohesionless soil, the earth pressure coefficient and seismic soil pressure were deduced by analyzing the soil stress state of retaining wall. The characteristics of earth pressure distribution under different circumstances were analyzed by combining examples. It also pointed out that the soil pressure is mainly related to the soil parameters and the assumption of the angle of fracture surface, the application point of earth pressure resultant force shifts upward with the increase of friction angle of the back wall and shifts downward with the increase of seismic angle.
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