水平低周反复荷载作用下无粘结部分预应力混凝土框架的抗震性能研究  

Experimental Research on Aseismic Properties of Unbonded P.C.Frame Under Horizontal Low Cyclic Loading

作　　者：余志武[1] 罗小勇[1] 

机构地区：[1]长沙铁道学院

出　　处：《建筑结构学报》1996年第2期30-36,共7页Journal of Building Structures

摘　　要：本文通过五榀梁中配有无粘结预应力筋的“强柱”、“弱柱”型框架在水平低周反复荷载作用下的试验研究和非线性分析，探讨其延性、耗能及恢复力特性，为无粘结部分预应力混凝土框架的抗震设计提供参考依据。Based on the experiments and nonlinear analyses of five single-span,single-story unbonded prestressed concrete frames under horizontal low cyclic loading with constant vertical loading,this paper inquires into the ductility features,the energy-dissipating capacity and the hysteretic characteristics of the P. frames with both the strong-column type and the weak-column type systems.The theoretical analysis employs the member-model with real stiffness,and the theoretical 'P-△' curves are rather in conformity with the measured ones before shearing fracture of the columns. Furthermore,this paper also puts forward some suggestions on the design and construction of such aseismic frame structures.

关 键 词：预应力混凝土 框架 反复载荷 无粘结 抗震性能 

分 类 号：TU378.402[建筑科学—结构工程]