Safety evaluation and the static-dynamic coupling analysis of counter-arched slab in plunge pool  

作　　者：LIAN JiJian LIU XiZhu MA Bin 

机构地区：[1]School of Civil Engineering,Tianjin University,Tianjin 300072,China

出　　处：《Science China(Technological Sciences)》2009年第5期1397-1412,共16页中国科学（技术科学英文版）

基　　金：Supported by the National Science Fund for Distinguished Young Scholars (Grant No. 50725929);the National Natural Science Foundation of China (Grant Nos. 50539060, 50679052, 50779044)

摘　　要：The stability of plunge pool slab of drainage structure is crucial to energy dissipation,but the working conditions of counter-arched slab are very complex and its stress procedure is considerably nonlinear and coupling.Therefore,a nonlinear static and dynamic coupling method to analyze the counter-arched slab configuration is put forward,which can reflect the coupling of dynamic loads,slab,anchor bars,groundwork and abutment as well as the dynamic procedure of instability.Various nonlinear factors and static-dynamic coupling are taken into consideration,and the working conditions,stress mechanism,dynamic instability procedure and influential instability factors are revealed.The proposed method thus provides a comprehensive safety evaluation method of plunge pool,which further pro-vides an important theoretical basis for engineering design of counter-arched slab in plunge pool.The stability of plunge pool slab of drainage structure is crucial to energy dissipation, but the working conditions of counter-arched slab are very complex and its stress procedure is considerably nonlinear and coupling. Therefore, a nonlinear static and dynamic coupling method to analyze the counter-arched slab configuration is put forward, which can reflect the coupling of dynamic loads, slab, anchor bars, groundwork and abutment as well as the dynamic procedure of instability. Various nonlinear factors and static-dynamic coupling are taken into consideration, and the working conditions, stress mechanism, dynamic instability procedure and influential instability factors are revealed. The proposed method thus provides a comprehensive safety evaluation method of plunge pool, which further provides an important theoretical basis for engineering design of counter-arched slab in plunge pool.

关 键 词：draw-off project plunge POOL counter-arched SLAB stability static-dynamic coupling analysis safety evaluation 

分 类 号：TB122[理学—工程力学]