水平拼縫部位采用強(qiáng)連接疊合板式剪力墻抗震性能研究*
種迅1, 2，葉獻(xiàn)國1, 2，蔣慶1, 2，黃俊旗1，吳海燕1，尚爾崢1
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(1 合肥工業(yè)大學(xué)土木與水利工程學(xué)院， 合肥 230009； 2 安徽省土木與建筑材料省級實(shí)驗(yàn)室， 合肥 230009)［摘要］為研究在水平拼縫部位采用強(qiáng)連接的疊合板式剪力墻的抗震性能，完成了兩個剪跨比為1.6的剪力墻試件的擬靜力試驗(yàn)。結(jié)果表明，基礎(chǔ)插筋面積較大的試件可以實(shí)現(xiàn)強(qiáng)連接，剪力墻的塑性部位由剪力墻與基礎(chǔ)間水平拼縫上移至墻板內(nèi)部，抗震性能接近現(xiàn)澆鋼筋混凝土剪力墻；基礎(chǔ)插筋面積較小的試件，塑性變形也首先出現(xiàn)在墻板本身，剪力墻與基礎(chǔ)間水平拼縫張開寬度較??；兩試件屈服荷載相差不大，但插筋面積較大的試件峰值荷載也較大；兩試件極限頂點(diǎn)位移角處于1/62～1/45之間，變形能力滿足《建筑抗震設(shè)計(jì)規(guī)范》（GB 50011—2010）要求。在試驗(yàn)研究基礎(chǔ)上，采用ANSYS軟件對試件受力過程進(jìn)行數(shù)值模擬分析，分析與試驗(yàn)結(jié)果的對比表明，所建立的分析模型可以較好地模擬試件的受力過程和破壞形態(tài)。［關(guān)鍵詞］疊合板式剪力墻; 水平拼縫; 強(qiáng)連接; 抗震性能; 擬靜力試驗(yàn); 數(shù)值模擬分析中圖分類號：TU375， TU317+.1文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2015)10-0043-06Seismic performance study of the superimposed shear wall with strong connection in horizontal connectionChong Xun1, 2, Ye Xianguo1, 2, Jiang Qing1, 2, Huang Junqi1,Wu Haiyan1, Shang Erzheng1(1 School of Civil Engineering, Hefei University of Technology, Hefei 230009, China; 2 Anhui Provincial Laboratory of Civil Engineering and Material, Hefei 230009, China)Abstract:To study seismic performance of the superimposed shear wall with strong connections in horizontal connection, quasi-static tests of two shear wall specimens with the shear-span ratio of 1.6 were performed. The test results indicate that the design purpose of strong connection could be gained for the specimen with more connecting reinforcement bars in foundation, in which case, the plastic hinges transfer from the horizontal connections between shear wall and foundation to the wall itself and the seismic performance is similar to the cast-in-place reinforced concrete walls. For the specimen with less connecting reinforcement bars, plastic deformation also appears on the wall panel first, and opening width of the horizontal connection between shear wall and foundation is relatively small. Yielding loads of the two specimens are quite close, but the one with more connection bars has the larger peak load. The ultimate drift ratios of the specimens are 1/62～1/45, fulfilling the requirement of Code for seismic design of buildings (GB 50011—2010). Based on the test study, numerical simulation analyses on the mechanical processes of the specimens were conducted using software ANSYS. Comparison between the analysis and test results shows that the finite element models could predict the mechanical process and damage pattern of the specimens well.Keywords:superimposed-shear-wall;horizontal connection; strong connection; seismic performance; quasi-static test; numerical simulation analysis*國家自然科學(xué)基金項(xiàng)目（50908071，51278519）。作者簡介：種迅，博士，副教授，Email:chongxun_sun@163.com。參考文獻(xiàn)［1］種迅，葉獻(xiàn)國，徐林，等. 半裝配式工字形橫截面鋼筋混凝土剪力墻抗震試驗(yàn)研究［J］. 工程力學(xué),2013, 30(2): 247-253.［2］蔣慶，葉獻(xiàn)國，種迅．疊合板式剪力墻的力學(xué)計(jì)算模型［J］. 土木工程學(xué)報(bào)，2012，45(1)：8-12.［3］JGJ 101—96 建筑抗震試驗(yàn)方法規(guī)程［S］. 北京：中國建筑工業(yè)出版社，1996.［4］GB 50010—2010 混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范［S］. 北京：中國建筑工業(yè)出版社，2011.［5］GB 50011—2010 建筑抗震設(shè)計(jì)規(guī)范［S］. 北京：中國建筑工業(yè)出版社，2010.［6］ANSYS Version 120 User′s and theory reference manual［M］. 2009.［7］KENT D C, PARK R. Flexural members with confined concrete ［J］. Journal of the Structural Division, 1971, 97(7): 1969-1990.［8］WILLAM K J, WARNKE E P. Constitutive model for the triaxial behavior of concrete ［C］//19th International Association for Bridge and Structural Engineering. Itally: Bergamo, 1975.［9］CEB-FIP model code 1990 ［S］. London: Thomas Telford Services Ltd., 1993.［10］ACI 318-08 Building code requirements for structural concrete and commentary［S］. Farmington Hills: American Concrete Institute, 2008.
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