基于临界剪切裂缝理论的钢筋混凝土板冲切破坏准则及验证  

Failure criterion and validation of punching shear behavior for slab column based on critical shear crack theory

作　　者：陈建伟 边瑾靓 任宏伟 苏幼坡 

机构地区：[1]华北理工大学建筑工程学院,河北唐山063009 [2]唐山市绿色建筑产业技术研究院,河北唐山063009

出　　处：《世界地震工程》2016年第1期15-22,共8页World Earthquake Engineering

基　　金：国家自然科学基金资助项目(51278164);河北省自然科学基金资助项目(E2014209221);华北理工大学2015年研究生创新项目(2015S08)

摘　　要：各国规范针对板柱节点抗冲切计算时采用的力学模型不尽相同,导致各国关于冲切承载力计算公式并不统一。瑞士混凝土结构规范SIA 262以及规范MC 2010针对冲切承载力所应用的物理模型为临界剪切裂缝理论,经大量试验验证临界剪切裂缝理论形式简单且具有较好的精度。鉴于我国对临界剪切裂缝理论研究的匮乏,针对临界剪切裂缝理论发展及原理进行了概述,并深入研究基于临界剪切裂缝下的破坏准则及验证分析。将中国规范计算公式与破坏准则进行对比分析,建议我国规范修订时参考基于临界剪切裂缝理论下的破坏准则。The mechanical models of punching computation adopted by standards from different countries for slab column connection are different that cause punching computation expression are different. The punching bearing capacity of Swiss code SIA 262 and code MC 2010 is based on a physical model called the Critical Shear Crack Theory（ CSCT）,A lot of research has been done on the use of this method,and it is shown to be satisfying both in terms of calculation simplicity and precision. In view of the lack of theoretical research on the CSCT,the development and principle of CSCT are summarized,and the failure criterion based on CSCT is intensive studied. The Chinese code formula and failure criteria for comparative analysis,Chinese code suggested to be revised and improved referring to failure criteria base on CSCT.

关 键 词：板柱节点 临界剪切裂缝理论 破坏准则 

分 类 号：TU375.2[建筑科学—结构工程]