现浇混凝土框架梁端截面有效翼缘宽度的试验研究与分析

英文篇名：Experimental Research and Analysis of Effective Flange Width of Beam End Section in Cast-in-Situ Concrete Frames
中文刊名：结构工程师
英文刊名：Structural Engineers
作者：郑士举 ; 蒋利学 ; 张伟平 ; 顾祥林
英文作者：ZHENG Shiju1 JIANG Lixue2 ZHANG Weiping1 GU Xianglin1(1.Department of Building Engineering ; Tongji University ; Shanghai 200092 ; China ; 2.Shanghai Research Institute of Building Science ; Shanghai 200032 ; China)
中文关键词：现浇混凝土框架 ; 现浇楼板 ; 有效翼缘宽度 ; 试验 ; 非线性有限元分析
英文关键词：cast-in-situ concrete frame ; cast-in-situ slab ; effective flange width ; experiment ; nonlinear finite element analysis
出版日期：2009-04-28
机构：同济大学建筑工程系;上海市建筑科学研究院;
年：2009
期：02
出版单位：结构工程师

摘要

通过10个现浇混凝土框架节点的低周反复加载试验,研究了现浇楼板对节点受力性能的影响。试验中测量了梁端截面板面钢筋应变的分布规律,分析了梁端截面的有效翼缘宽度,并用DIANA程序对试验节点进行非线性有限元模拟分析,分析与试验结果吻合良好。然后,通过非线性有限元分析研究了层间位移角、板面钢筋材性、梁高、梁跨、板宽、板厚、节点形式等因素对梁端截面有效翼缘宽度的影响。最后,提出了负弯矩作用下梁端截面有效翼缘宽度取值的建议,可供现浇混凝土框架结构抗震设计、鉴定和加固参考。
Ten reinforced concrete beam-column connections were tested under cyclic loads to investigate effect of the cast-in-situ slab on the behavior of the connection.Strain distribution of the slab reinforcement across the beam end section was measured during the test to obtain the effective flange width of the beam end section.Then the connections were modeled using finite element package DIANA.Based on the good accordance between analytical results and experimental results,impacts of the inter story drift,material property of the slab reinforcement,beam depth,beam span,slab width,slab thickness,connection type etc.on the effective flange width of the beam end section were analyzed.Finally,the effective flange width of the beam end section when subjected to negative moment was proposed.

引文

[1]U.S.-Japan Research.Seismic Design Implications(JTCC 1988)[J].Journal of Structural Engineering,1988,144(9):2000-2016.
    [2]蒋永生,陈忠范,周绪平,等.整浇梁板的框架节点抗震研究[J].建筑结构学报,1994,15(6):11-16.
    [3]王亚勇.汶川地震建筑震害启示——抗震概念设计[J].建筑结构学报,2008,29(4):20-25.
    [4]叶列平,曲哲,陆新征,等.提高建筑结构抗地震倒塌能力的设计思想与方法[J].建筑结构学报,2008,29(4):42-50.
    [5]傅学怡.汶川、台湾建筑震害启示——改进规范的几点建议[J].建筑结构,2008,38(7):15-16.
    [6]肖从真.汶川地震震害调查与思考[J].建筑结构,2008,38(7):21-24.
    [7]中华人民共和国建设部.GB 50010—2002混凝土结构设计规范[S].北京:中国建筑工业出版社,2002.
    [8]Durrani A J,Zerbe H E.Seismic Resistance of R/CExterior Connections with Floor Slab[J].Journal ofStructural Engineering,1987,113(8):1850-1864.
    [9]Zerbe HE,Durrani A J.Seismic Response ofConnections in Two-Bay Reinforced Concrete FrameSubassemblies with a Floor Slab[J].ACI StructuralJournal,1990,87(4):406-415.
    [10]French C W,Boroojerdi A.Contribution of R/C FloorSlabs in Resisting Lateral Loads[J].Journal ofStructural Engineering,1989,115(1):1-18.
    [11]Pantazopoulou S J,Moehle J P,Shahrooz B M.SimpleAnalytical Model for T-Beams in Flexure[J].Journalof Structural Engineering,1988,114(7):1507-1523.
    [12]Jiang L X,Zheng S J,Zhang W P,et al.CyclicLoading Behavior of Weak Reinforced Conrete Beam-Column Connections[J].Key Engineering Materials,2009:400-402,881-886.