基于位移场混合模型的棉花滩大坝弹性模量反演分析  

Back Analysis on the Elastic Modulus of Mianhuatan Dam Based on Displacement Field Hybrid Model

作　　者：刘贝贝[1,2] 张岚[1,2] 金秋[1,2] 

机构地区：[1]河海大学水利水电工程学院,江苏南京210098 [2]河海大学水资源高效利用与工程安全国家工程研究中心,江苏南京210098

出　　处：《水力发电》2010年第3期55-58,共4页Water Power

基　　金：国家自然科学基金项目(50809025);国家科技支撑计划课题(2006BAC14B03)

摘　　要：根据坝体及坝基的变形特性,对位移水压分量进行分离,建立大坝多测点位移场的混合模型,反演得到坝体及坝基的综合弹性模量,并根据此反演结果,利用结构分析法拟定坝顶水平位移的监控指标。以棉花滩大坝为例进行计算,采用结构分析法的拟定结果与采用实测资料小概率法的拟定结果非常接近,说明反演分析结果反映了工程实际情况。Based on dam body and foundation deformation characteristics,the water press component of displacement was separated and the hybrid model for dam multi-measuring point displacement field was established.The back analysis on comprehensive elastic modulus of body and foundation was conducted by this hybrid model,and based on the results of back analysis,the monitor indicators of crest horizontal displacement was developed by using structural analysis method.As an example,this model was applied on the study of Mianhuatan Dam,and the results are very close to the results formulated by small probability method based on actual measured data.

关 键 词：多测点位移场 混合模型 反演 结构分析法 监控指标 

分 类 号：O343[理学—固体力学]