水电站厂房抗滑稳定分项系数设计方法研究  

Study on design method of partial coefficients of anti-sliding stability of hydropower house

作　　者：张勇[1] 肖平西[1] 安旭文[2] 侯建国[2] 

机构地区：[1]中国水电顾问集团成都勘测设计研究院,四川成都610072 [2]武汉大学土木建筑工程学院,湖北武汉430072

出　　处：《人民长江》2012年第24期25-30,38,共7页Yangtze River

摘　　要：依据GB 50199-1994的相关规定,开展了水电站厂房整体抗滑稳定的分项系数极限状态设计法研究,提出了厂房整体抗滑稳定安全度设置水平、结构重要性系数、地基材料性能分项系数、设计状况系数等的取值原则。采用工程经验校准法、可靠度分析法计算了沿建基面的抗滑稳定结构系数,并分别采用单一安全系数法和推荐的分项系数法按抗剪断强度公式进行了整体抗滑稳定计算。结果表明,按两种方法设计的水电站厂房抗滑稳定安全度水平较为接近,从而证明所提方法的有效性。本研究成果可为《水电站厂房设计规范》的修订提供参考。According to the relevant regulations of GB 50199-1994,the partial coefficient limit state design method for the integral anti-sliding stability of a hydropower house is studied.The value selection principles of the following coefficients are proposed,including safety setting level of the integral anti-sliding stability,importance coefficient of structure,partial coefficient for strength of foundation material,coefficient of design situation,etc.Also,the calibration method based on engineering experience and the reliability analysis method is adopted to determine the structural coefficient for the integral anti-sliding stability along the foundation surface of the hydropower house.Finally,on the basis of shear strength formula,the single safety factor method and the partial coefficient limit state design method are respectively applied to analyze the anti-sliding stability of the hydropower house,and the comparative results show that the anti-sliding safety level of the hydropower house by the above two methods is similar,verifying the effectiveness of the presented method.The research result provides a good reference for the revision of the Design Specification for Powerhouses of Hydropower Stations.

关 键 词：分项系数 可靠度 抗滑稳定 抗剪断强度公式 抗剪强度公式 水电站厂房 

分 类 号：TV731[水利工程—水利水电工程]