挡墙土压力及其分布影响因素的研究  

Influencing factors for earth pressure and its distribution on retaining wall

作　　者：郦能惠[1] 武清玺[2] 陆军[2,3] 江松笙 

机构地区：[1]南京水利科学研究院,江苏南京210024 [2]河海大学,江苏南京210098 [3]江苏省交通科学研究院,江苏南京211112 [4]华东宜兴抽水蓄能有限公司,江苏宜兴214205

出　　处：《岩土工程学报》2013年第8期1381-1386,共6页Chinese Journal of Geotechnical Engineering

摘　　要：利用依托工程完整的挡墙温度、位移和土压力观测资料研究了挡墙土压力及其分布的影响因素,首先利用实测资料反演分析确定了计算参数,继而进行挡墙温度应力仿真分析,研究了挡墙所支挡的堆石体高度、挡墙位移和气温对挡墙土压力及其分布的影响,指出在挡墙所支挡的土石体作用基本不变的情况下,气温是影响挡墙土压力分布的重要因素,进一步揭示了挡墙的工作机理和挡墙土压力周期性变化的原因。The influencing factors for earth pressure and its distribution on retaining wall are studied by analyzing comprehensive observed data of temperature,displacement and earth pressure of retaining wall of Yixing Pumped Storage Hydropower Station.The calculated parameters are determined through back analysis of the observed data.An imitative analysis of temperature stress on retaining wall is performed.The effects of the height of rockfill,displacement of retaining wall and air temperature on the earth pressure on retaining wall and its distribution are studied by means of the FEM numerical calculation.It is indicated that the air temperature is an important influencing factor for the distribution of earth pressure on retaining wall when the rockfill has no change.The earth pressure mechanism and the reason of periodic change of earth pressure on retaining wall during operation are further revealed.

关 键 词：挡墙 土压力 分布 位移 气温 堆石体 影响因素 

分 类 号：TV641[水利工程—水利水电工程]