矩形截面剪力墻軸壓比限值研究與截面變形能力設計
楊鵬輝1,梁興文2,鄧明科2
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(1 西安建筑科技大學建筑設計研究院,西安 710055; 2 西安建筑科技大學結構工程與抗震教育部重點實驗室,西安 710055)[摘要]通過理論分析和數值計算,研究了設置約束邊緣構件的矩形截面剪力墻軸壓比限值。研究結果表明,影響混凝土剪力墻軸壓比限值的主要因素為約束箍筋的配箍特征值、剪力墻的高寬比和頂點目標位移角值,據此提出了確定軸壓比限值的方法,同時也給出了剪力墻截面變形能力的設計方法。通過10個剪力墻試件理論計算與試驗目標位移角的對比分析,說明了該方法的可靠性。[關鍵詞]鋼筋混凝土剪力墻;軸壓比限值;截面變形能力;配箍特征值Study of the allowable axial load ratio of rectangular section shear wall and design of sectional deformation capacityYang Penghui1, Liang Xingwen2, Deng Mingke2(1 Institute of Architecture Design, 2 Key Laboratory for Structural Engineering and Earthquake Resistance of China Education Ministry, Xi’an University of Architecture and Technology, Xi’an 710055, China)Abstract:Through theoretical analysis and numerical calculation, the allowable axial load ratio of rectangular section shear wall with confined boundary elements were studied. The results show that the transverse reinforcement characteristic value, the aspect ratio and the target top displacement ratio are the main factors influencing the allowable axial load ratio of the shear wall. A method of determining the allowable axial load ratio is proposed. The design method of sectional deformation capacity is also given. The comparison of calculation results and test results of ten shear wall specimens illustrates that this design method is feasible.Keywords:reinforced concrete shear wall; allowable axial load ratio; sectional deformation capacity; transverse reinforcement characteristic value國家自然科學基金資助項目(50678146);高等學校博士學科點專項科研基金項目(20070703002);西安建筑科技大學人才科技基金(RC0731)。作者簡介:楊鵬輝,碩士,Email:yph-003@163.com。參考文獻[1]GB50011—2001建筑抗震設計規(guī)范[S]. 北京:中國建筑工業(yè)出版社,2001.[2]JGJ3—2002高層建筑混凝土結構技術規(guī)程[S]. 北京:中國建筑工業(yè)出版社,2002.[3]THOMSEN J H, WALLACE J W. Displacement-based design of slender reinforced concrete walls-Experimental verification[J]. Journal of Structural Engineering, 2004, 130(4):618-630.[4]WALLACE J W, MOEHLE J P. Ductility and detailing requirements of bearing wall buildings[J]. Journal of Structural Engineering, 1992, 118 (6):16251644.[5]PAULAY T, PRIESTLEY M J N. Seismic Design of Reinforced Concrete and Masonry Buildings[M]. New York: John Wiley & Sons, Inc, 1992.[6]錢稼茹, 程麗榮, 周棟梁. 普通箍筋約束混凝土柱的中心受壓性能[J].清華大學學報:自然科學版,2002,42(10):1369-1373.[7]錢稼茹,徐福江.鋼筋混凝土剪力墻基于位移的變形能力設計方法[J]. 清華大學學報:自然科學版,2007,47(3):1-4.[8]梁興文,楊鵬輝,鄧明科. 無約束邊緣構件混凝土剪力墻的軸壓比限值研究[J]. 工業(yè)建筑, 2009,39(9):67-70.[9]陳勤, 李耕勤, 錢稼茹,等. HRB400級鋼筋焊接網剪力墻試驗研究[J]. 混凝土, 2002(7):18-22.[10]李耕勤, 錢稼茹, 顧萬黎. 采用冷軋帶肋鋼筋焊接網剪力墻的抗震性能研究[J]. 建筑結構,2002, 32(10):29-33.
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