强震作用下框架结构节点抗震性能有限元分析  

Finite element analysis of joints seismic performance of frame structure under strong earthquake

作　　者：杨海旭[1] 王维韬[1] 

机构地区：[1]东北林业大学土木工程学院,黑龙江哈尔滨150040

出　　处：《辽宁工程技术大学学报（自然科学版）》2014年第3期330-335,共6页Journal of Liaoning Technical University (Natural Science)

基　　金：中央高校基本科研业务费专项资金资助项目(DL12CB01);黑龙江省教育厅科学技术研究基金资助项目(12513034);中国博士后科学基金第五十批面上基金资助项目(2011M501080)

摘　　要：为探讨强震作用下钢筋混凝土框架结构梁柱节点的抗震性能.以某机场框架结构扩建工程为实例,采用Abaqus软件,选取EL-Centro波、Accel人工波、Taft波,计算结构在不同震级、不同加速度峰值地震作用下的响应,对局部框架结构节点的抗震性能进行有限元分析.分析结果表明:在强震作用下,考虑楼板会对结构梁构件的刚度起到显著提高作用,结构抗侧刚度提高,但容易出现"强梁弱柱"型破坏.若提高柱构件的配筋率与配箍率,可以有效增强柱的强度,对柱端混凝土过早开裂起到限制作用,有助于实现"强柱弱梁"型破坏.Using an airport expansion project with frame structure as an example, this paper studied the seismic performance of reinforced,concrete frame structure＇s beam-column joints under the action of strong earthquake. With Abaqus software, the response of structure in different seismic magnitude and peak acceleration under EL-Centro wave, Accel artificial wave and Taft wave were calculated, and the seismic performance of local frame node is also analyzed. The analysis results indicate that considering floor, the effect on stiffness of the beam structure is significantly improved and structural lateral stiffness is increased, but the ＂strong beam weak column＂ destroy appears easily. If reinforcement ratio and stirrup ratio are improved, it will enhance the strength of column and restrict the concrete at the end of the play, which also contributes to achieve ＂strong column weak beam＂ type.

关 键 词：钢筋混凝土框架 强震 节点 抗震性能 Abauqs分析 楼板 配筋率 损伤 

分 类 号：TU375.4[建筑科学—结构工程]