国内外不同规范对弯剪破坏钢筋混凝土墩柱的受剪承载力计算比较  

Comparison of Domestic and Overseas Code Regards to Shear Capacity of Reinforced Concrete Columns with Flexural-shear Failure

作　　者：石程程[1] 马颖[1] 罗国杰[1] 许新勇[1] 

机构地区：[1]华北水利水电大学水利学院,河南郑州450045

出　　处：《水利与建筑工程学报》2016年第5期20-25,共6页Journal of Water Resources and Architectural Engineering

基　　金：国家自然科学基金青年基金项目(51408223;51408222);国家自然科学基金项目(U1404529)

摘　　要：弯剪破坏作为地震作用下会发生的一种破坏方式,破坏过程较为复杂,各国对塑性铰区域受剪承载的研究也相对较少,针对此问题,借助美国PEER柱抗震性能试验数据库,统计分析了其中16根矩形截面发生弯剪破坏的拟静力试验墩柱的数据,对我国水利行业标准《水工混凝土结构设计规范》（SL/T191-96）、《水工混凝土结构设计规范》（SL191-2008）、电力行业标准《水工混凝土结构设计规范》（DL/T5057-2009）及中国《混凝土结构设计规范》（GB50010-2010）中受剪承载力设计的可靠性进行了评价,并与欧、美相关设计规范进行对比分析。研究表明,轴压比在0.1～0.3之间的弯剪破坏墩柱,规范基本可满足承载力要求;而轴压比小于0.1或大于0.3的墩柱,在抗震设计时应予以注意。As a kind of failure mode under seismic load,flexural-shear failure＇s process is very complicated and the research on the shear capacity of plastic hinge region is relatively inadequate. From the PEER（ the Pacific Earthquake Engineering Research Center,USA） database for seismic performance testing of the columns,in accordance with the shear capacity of plastic hinge region,the quasi-static test data of 16 rectangular section columns failed in flexural-shear were collected. Through statistical analysis,the reliability of the shear capacity as provided in the standard of water conservancy industry in China,the Design Code for Hydraulic Concrete Structures（ SL /T191- 96） and the Design Code for Hydraulic Concrete Structures（ SL191- 2008） and in the standard of electric power industry in China,the Design Specification for Hydraulic Concrete Structures（ DL / T5057- 2009） was evaluated. The provisions of the shear capacity in the above codes were then compared to those in the main bridge seismic design specifications of the USA and Europe. The results show that these specifications can basically meet the requirements of shear capacity of columns with axial load ratio between 0. 1 ～ 0. 3. For the seismic design of the columns with axial load ratio less than 0. 1 or more than 0. 3,due attention should be paid.

关 键 词：钢筋混凝土 墩柱 地震荷载 弯剪破坏 抗剪承载力 

分 类 号：TV332[水利工程—水工结构工程]