無粘結(jié)預應力混合裝配式聯(lián)肢墻抗震性能分析
蔡小寧1，孟少平1，孫巍巍2，吳暢1
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1 東南大學混凝土及預應力混凝土結(jié)構(gòu)教育部重點實驗室，南京 210096； 2 南京理工大學，南京 210094）［摘要］對無粘結(jié)預應力混合裝配式聯(lián)肢墻中普通鋼筋與預應力筋的布置及其面積比對抗震性能的影響進行了研究，給出了合理的設(shè)計建議。對無粘結(jié)預應力混合裝配式聯(lián)肢墻和直接裝配式聯(lián)肢墻進行了對比試驗研究，結(jié)果表明無粘結(jié)預應力裝配式聯(lián)肢墻具有“自恢復”的性能，卸載后殘余變形小，非線性變形集中于連接區(qū)域，震后易修復，與直接裝配式聯(lián)肢墻相比，具有較好的耗能能力和較高的承載力。［關(guān)鍵詞］抗震性能；混合裝配；耗能能力；殘余變形；承載力Study on seismic behavior of unbonded post-tensioned hybrid precast coupled wallCai Xiaoning1, Meng Shaoping1, Sun Weiwei2, Wu Chang1(1 Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096,China; 2 Nanjing University of Science and Technology, Nanjing 210094,China)Abstract:The effect of the arrangement of bar reinforcement and unbonded post-tensioned reinforcement and ratio of area of bar reinforcement to unbonded post-tensioned reinforcement on seismic behavior of hybrid reinforced precast coupled wall are analyzed, then appropriate design suggestions are proposed. Two specimens of unbonded post-tensioned precast coupled wall were tested, one was the hybrid precast coupled wall and the other was the direct precast coupled wall for comparison.The results validated that unbonded post-tensioned precast coupled wall has the ability of self-recovery,so residual deformation is small and it can be easily rehabilitated due to nonlinear deformation concentrates around the connection zones.The results also showed that hybrid precast coupled wall has the advantage of good energy dissipation and high ultimate capacity.Keywords:seismic behavior; hybrid precast; energy dissipation; residual deformation；ultimate capacity江蘇省建設(shè)廳科技項目基金資助(JS2007ZB04)。作者簡介：蔡小寧，博士研究生，Email:fenyun0801@163.com。參考文獻［1］孫巍巍，孟少平.后張無粘結(jié)預應力裝配混凝土聯(lián)肢抗震墻的連梁組合體抗側(cè)性能［J］.東南大學學報，2007,37(2):190-194.［2］NAKAKI S D,STANTON J F，SRITHARAN S.An overview of the PRESSS five-story precast test building［J］.PCI Journal, 1999, 44(2):26-39.［3］ACI Innovation Group. ACI T1-2—03 Special Hybrid Moment Frames Composed of Discretely Jointed Precast and Post-Tensioned Concrete Members［S］. 2003.［4］EI-SHEIKH M. Seismic Analysis Behavior and Design of Unbonded Post-tensioned Precast Concrete Frames［D］.United States: Department of Civil and Environmental Engineering, Lehigh University，1997.［5］STEFANO PAMPANIN. Analytical Modeling of the Seismic Behavior of Precast Concrete Frame Ductile Connections［D］. San Diego:University of California,2000.［6］JOHN STANTON,WILLIAM C S, GERALDINE S C. A hybrid reinforced precast frame for seismic regions［J］.PCI Journal, 1997,42(2):20-32.［7］Specifications for Structures to Be Built in Disaster Areas［S］.Ankara, Turkey: Ministry of Public works and settlement，1998.［8］SEVKET OZDEN, ONUR ERTAS. Behavior of unbonded post-tensioned precat concrete connections with different percentages of mild steel reinforcement［J］.PCI Journal, 2007,52(2):32-44.［9］孫巍巍.后張無粘結(jié)預應力裝配式短肢剪力墻抗震能力及設(shè)計方法研究［D］.南京：東南大學，2007.
