型钢超高强混凝土框架边节点恢复力模型研究  

Restoring Force Model for SRUHSC Exterior Joints

作　　者：刘伟[1] 贾金青[1] 涂兵雄[2] 

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024 [2]华侨大学土木工程学院,福建厦门361021

出　　处：《水利与建筑工程学报》2016年第1期112-117,共6页Journal of Water Resources and Architectural Engineering

基　　金：国家自然科学基金项目"基于延性的型钢超高强混凝土框架结构体系抗震性能与抗震设计关键技术研究"(51178078)

摘　　要：通过对6个型钢超高强混凝土框架边节点进行低周往复试验,研究了轴压比、体积配箍率对边节点抗震性能的影响,并在试验结果的基础上,通过理论分析及回归分析建立了考虑轴压比及体积配箍率影响的恢复力模型。研究表明:轴压比与体积配箍率对型钢超高强混凝土边节点骨架曲线各特征点均有不同程度的影响,建议的恢复力模型与试验结果吻合良好,为型钢超高强混凝土节点的非线性分析提供弹塑性模型。Six steel reinforced ultra high strength concrete（ SRUHSC） frame exterior joints were tested under cyclic loading. Based on the test results,the effects of the axial compression ratio and the ratio of stirrup on the seismic behavior were investigated. Based on the experimental observation,a restoring force model for SRUHSC exterior joints was proposed,which is capable of considering the effect of the axial compression ratio and the ratio of stirrup on the hysteretic characteristics of the joints. It is showed that axial compression ratio and the ratio of stirrup have different level of influence to the feature points of skeleton curve. The proposed restoring force model is in good agreement with the test results and can be applied to nonlinear analysis of SRUHSC joints.

关 键 词：型钢超高强混凝土 轴压比 体积配箍率 恢复力模型 

分 类 号：TU378.2[建筑科学—结构工程]