基于有效耗能的钢骨超高强混凝土框架节点剩余承载力评估  

Calculation and Evaluation of Steel Reinforced High Strength Concrete Frame Node Residual Bearing Capacity After Seismic Action

作　　者：常智慧[1] 闫长旺[1,2] 贾金青[3] 包联进 王存贵 刘波 

机构地区：[1]内蒙古工业大学土木工程学院,内蒙古呼和浩特010051 [2]内蒙古工业大学矿业学院,内蒙古呼和浩特010051 [3]大连理工大学 土木工程学院,辽宁大连116024 [4]华东建筑设计研究总院,上海200002 [5]中国建筑第六工程局有限公司,天津300400 [6]中国建筑第三工程局第二建设工程有限责任公司,湖北武汉430074

出　　处：《土木工程与管理学报》2016年第5期49-53,共5页Journal of Civil Engineering and Management

基　　金：国家自然科学基金(51168034;51178078);内蒙古自治区高等学校青年科技英才支持计划(NJYT-14-B08)

摘　　要：为了确定地震作用下钢骨超高强混凝土框架节点的剩余承载力,通过12个节点试件的低周反复荷载试验,在分析地震损伤模型的基础上,建立了剩余承载力计算表达式,并讨论了试验参数对剩余承载力的影响。结果表明:计算结果与试验结果较为接近,试验参数对承载力的下降速率影响不大,剩余承载力随轴压比的增大而增大,配箍率大的试件剩余承载力较高,十字型钢骨试件的剩余承载力大于工字型钢骨试件;所提出的计算公式能较好反映节点的受力机理,可为该类节点的抗震设计和地震后的加固提供理论依据。In order to determine the residual bearing capacity of steel reinforced super high strength concrete frame joints after earthquake,this paper established the calculation formula of the residual bearing capacity on the basis of analyzing the seismic damage model by low cycle repeated load test of12 joint test specimens and discussing the influence of test parameters on the residual bearing capacity. Results show that the calculated results are close to the experimental results. The test parameters have little effect on the decline rate of the load bearing capacity,moreover,the residual bearing capacity increases with the increase of axial compression ratio; specimens with high hoop ratio have higher residual bearing capacity; cross type steel bearing capacity is greater than the remaining test specimens of H-shaped steel; The proposed calculation formula can better reflect the force mechanism of the node,and it can provide theoretical basis for the seismic design and the post earthquake reinforcement of this kind of joints.

关 键 词：钢骨超高强混凝土 框架节点 位移幅值 剩余承载力 

分 类 号：TU398.2[建筑科学—结构工程]