温控参数折减有限元法在拟静力土石坝坝坡稳定分析中的应用  

APPLICATION OF TEMPERATURE DRIVING STRENGTH REDUCTION FEM IN PSEUDO-STATIC SLOPE STABILITY ANALYSIS

作　　者：严新军[1] 欧阳君[1] 宫经伟[1] 侍克斌[1] 徐千军[1,2] 

机构地区：[1]新疆农业大学水利与土木工程学院,新疆乌鲁木齐830052 [2]清华大学水沙科学与水利水电工程国家重点实验室,北京100084

出　　处：《内陆地震》2010年第2期131-136,共6页Inland Earthquake

基　　金：新疆维吾尔自治区高校科研计划青年教师科研启动基金(XJEDU2008S27);清华大学水沙科学与水利水电工程国家重点实验室开放基金(sklhse-2008-D-01);新疆水利水电工程重点学科基金(XJZDXK-2002-10-05)联合资助

摘　　要：土石坝的拟静力计算与温控参数折减有限元法相结合,对土石坝边坡稳定性进行有限元计算与分析。按《水工建筑物抗震设计规范》(SL203-97)的规定,依据坝高动态分布系数施加水平等效地震惯性力,然后用温控参数折减有限元法确定土石坝边坡的临界失稳状态及其所对应的安全系数。结果表明:采用此法进行拟静力土石坝边坡稳定分析与传统的Bishop法相比,计算结果相一致,且可以反映土石坝的应力、应变和整个边坡破坏发展过程。Pseudo-static stability analysis of the soil Dam is combined with the technique of shear strength reduction FEM in stability analysis to calculate the slope stability. According to the provision of 《Specifications for seismic design of hydraulic structures》（ SL203 - 97 ）, horizontal seismic inertial of dynamic distributing coefficient exert to the dam , then account safety factor and limiting states of the slope are determined with the temperature driving strength reduction FEM. The analysis results show that this method is reasonable for the analysis of soil slope stability because the above result is the same as that of Bishop Method, and merit process of the slope. can reflect stress, strain and destruction develop-

关 键 词：边坡稳定分析 温控强度参数折减 地震惯性力 拟静力法 

分 类 号：P315.7[天文地球—地震学]