RC异形柱框架抗连续倒塌试验研究  

Experimental Research on RC Special-shaped Columns Frame's Progessive Collapse Resistance

作　　者：戎贤[1,2] 仉庆文[1,2] 赵玉婷[1,2] 

机构地区：[1]河北工业大学土木工程学院,天津300401 [2]河北省土木工程技术研究中心,天津300401

出　　处：《建筑科学》2015年第11期74-78,85,共6页Building Science

基　　金：国家自然科学基金NSFC(51178304)

摘　　要：按照我国现有抗震标准设计了一个1/3缩尺的两层3×2跨异形柱框架结构模型,并在替代柱的二层柱顶进行了竖向静力加载,以研究模型框架在失去底层角柱后,框架结构在倒塌破坏过程中的水平变形、传力方式及受力机理。研究结果表明:框架的倒塌破坏全过程可分为弹性阶段、弹塑性阶段、塑性阶段和破坏阶段;在角柱失效后,由梁端塑性铰和板内负弯矩塑性铰线构成的梁板空间受力机制为抵抗框架倒塌破坏的主要体系。According to the existing seismic standards, a 1/3 scale,two layer and 3 × 2 large-span special-shaped column frame model is designed. A vertical static load is carried out on the second-floor-column＇ s top position of the alternative column to study the horizontal deformation, load-transferring mechanism and stress mechanism during the process of collapse after the failure of the corner column in the bottom floor. The study results show that the frame collapse process can be divided into four stages： elastic stage, elastic-plastic stage, plastic stage and damage stage. The beam-slab space mechanism composed by beam-end plastic hinge and slab hogging moment plastic hinge line is the main system to resist the collapse damage of the frame when the corner column failed.

关 键 词：异形柱框架 连续倒塌 静载试验 角柱 

分 类 号：TU317[建筑科学—结构工程]