Z形截面柱延性性能及軸壓比限值研究
王啟文1，許貽懂1，陳云霞2
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王啟文1，許貽懂1，陳云霞2（1 深圳市建筑設計研究總院有限公司，深圳 518031；2 天津大學建筑工程學院，天津 300072）［摘要］為了配合《混凝土異形柱結構技術規(guī)程》（JGJ 149-2006）修訂增設Z形截面柱的相關規(guī)定，對34 616根Z形柱的延性進行了非線性有限元計算分析，研究了彎矩作用方向角、軸壓比、截面肢長比及箍筋的配置等因素對Z形柱的截面曲率延性的影響，分析得到其延性變化規(guī)律。通過對Z形柱截面曲率延性進行回歸分析，得到其設計軸壓比與配箍特征值的關系，進而得到Z形截面柱的軸壓比限值及箍筋加密區(qū)的最小配箍特征值的要求。［關鍵詞］Z形截面柱；延性；軸壓比限值；配箍特征值中圖分類號：TU375 文獻標識碼：A 文章編號：1002-848X(2013)01-0048-06Research on limited value of axial compression ratio and performance of ductility for Z-shaped RC columnsWang Qiwen1, Xu Yidong1, Chen Yunxia2(1 Shenzhen General Institute of Architectural Design and Research Co., Ltd., Shenzhen 518031, China; 2 School of Civil Engineering, Tianjin University, Tianjin 300072, China)Abstract: In order to add correlative regulation of Z-shaped column for revising Technical specification for concrete structures with specially shaped column (JGJ 149-2006), ductilities of 34 616 Z-shaped columns were calculated and analyzed by nonlinear-finite element method. Many relevant factors, including action direction angle of bending moment, axial compression ratio, length ratio of two legs of inequiaxial Z-shaped column and scheme of lateral reinforcement etc., were analyzed, and its section curvature ductility behaviors were summarized. On the base of regression analysis for the section curvature ductility of Z-shaped columns, the designed value of axial compression ratio was obtained in relation with characteristic value for providing stirrup or hoop. Then the limited value of axial compression ratio and minimum characteristic value for providing stirrup or hoop in densified zone of Z-shaped columns were obtained.Keywords: Z-shaped column; ductility; limited value of axial compression ratio; characteristic value for providing stirrup or hoop作者簡介：王啟文，博士，教授級高工，執(zhí)行總工程師，一級注冊結構工程師，Email: wangqiwen@sadi.com.cn參考文獻［1］王依群，許貽懂，陳云霞. 鋼筋混凝土異形柱的軸壓比限值與配箍構造［J］. 天津大學學報，2006，39（3）：295-300.［2］徐海燕，薛海宏，袁志華.Z形截面柱正截面承載力的試驗與分析［J］.華東交通大學學報，2004，21（1）：8-12.［3］PARK R, NIGEL PMMJ, WAYNE D G. Ductility of square-confined concrete columns［J］. Journal of the Structural Division, ASCE, 1982, 108(ST4):929-950.［4］高云海. 鋼筋混凝土T形截面雙向壓彎構件正截面強度、延性的試驗及理論研究［D］. 天津：天津大學，1993.［5］劉超. 鋼筋混凝土L形截面雙向壓彎構件正截面強度、延性的試驗及理論研究［D］. 天津：天津大學，1994.［6］何培玲. 鋼筋混凝土十字形截面雙向壓彎構件正截面承載力、延性的試驗及理論研究［D］. 天津：天津大學，1996.［7］許貽懂，趙艷靜，陳云霞，等. 不等肢異形柱延性性能及軸壓比限值［C］//全國混凝土異形柱結構學術研討會論文集，2006：32-41.［8］趙艷靜，陳云霞，王玲勇. 鋼筋混凝土異形截面雙向壓彎柱延性性能的理論研究［J］. 建筑結構，1999,29（1）：2-7.［9］趙艷靜，陳云霞，于順泉. 鋼筋混凝土異形截面框架柱軸壓比限值的研究［J］. 天津大學學報，2004，37（7）：600-604.
