(1 中国电子工程设计院结构评估及加固所 北京 100840； 2 清华大学土木工程系 北京 100084)
［摘要］残余变形是衡量结构震后能否继续满足使用要求和可修复性的重要指标。首先提出以残余变形为目标的结构或构件复位性能的基本概念；然后利用已开发并经试验验证的纤维模型程序，完成了一榀预应力混凝土框架试件在不同预应力筋粘结形式下的数值模拟，初步探讨了预应力筋粘结形式对结构复位性能的影响。计算结果表明，对于按规范设计的预应力混凝土框架，框架柱预应力筋粘结形式对框架的复位性能产生较大影响，而框架梁预应力筋的影响则相对较小。实际工程中预应力筋宜优先采用部分无粘结形式。
［关键词］ 预应力混凝土；框架结构；纤维模型；粘结形式；复位性能；部分无粘结
Influence by Bonding Styles of Prestressed Strands/Steels on Re-centering Behavior of PC Frames
Wang Xunliu1，Ye Lieping2，Lu Xinzheng2(1 China Electronics Engineering Design Institute，Beijing 100840，China； 2 Tsinghua University，Beijing 100084，China)
Abstract:Residual deformation is a key index to assess whether a structure can be reused or restored after an earthquake. A PC frame has been simulated with various bonding styles of PS by a fiber model program developed and validated with test data in this study, and some simple discussions to the effect on re-centering behavior of PS bonding styles have been given. The results of simulation indicate that, as to PC frames designed according to codes in existence, the bonding style of PS used in columns has great influence on the re-centering behavior of PC frame, while the PS of beams have relatively little effect.It should take priority to use the partially debonding style of PS in the engineering practice.
Keywords:prestressed concrete; frame structure;  fiber model; bonding style; re-centering behavior; partially debonded
高等学校博士学科点专项科研基金资助课题(编号20040003095)。
参考文献
［1］ZATAR W, MUTSUYOSHI H. Residual displacements of concrete bridge piers subjected to near field earthquakes［Ｊ］. ACI Structural Journal, 2002, 99(6): 740-749．
［2］PAULAY T,PRIESTLEY M J N. Seismic Design of Reinforced Concrete and Masonry Buildings［Ｍ］. John Wiley and Sons Inc., 1992, 98-106．
［3］PRIESTLEY M J N. Myths and Fallacy in Earthquake Engineering-conflicts Between Design and Reality［Ｍ］. Concrete International, 1997,54-63．
［4］李应斌, 刘伯权, 史庆轩. 基于结构性能的抗震设计理论研究与展望［Ｊ］. 地震工程与工程振动, 2001, 21(4): 73-79．
［5］汪训流, 叶列平, 陆新征. 往复荷载下预应力混凝土框架的数值模拟［Ｊ］．工程抗震与加固改造, 2006, 28(6): 25-29．
［6］汪训流. 配置高强钢绞线无粘结筋混凝土柱复位性能的研究［D］. 北京: 清华大学, 2007．
［7］汪训流, 陆新征, 叶列平. 往复荷载下钢筋混凝土柱受力性能的数值模拟［Ｊ］. 工程力学, 2007, 24(12): 76-81．
［8］苏小卒．预应力混凝土框架抗震性能研究［Ｍ］．上海科学技术出版社，1998．
［9］MSC. Marc 2005在线帮助文档．
［10］L?GERON F, PAULTRE P. Uniaxial confinement model for normal and high-strength concrete columns［J］. J Struct Eng, ASCE, 2003,129(2): 241-252.
［11］江见鲸，陆新征，叶列平. 混凝土结构有限元分析［M］. 北京：清华大学出版社，2005.
［12］ESMAEILY A, XIAO Y. Behavior of reinforced concrete columns under variable axial Loads: analysis［J］.ACI Structural Journal, 2005, 102(5): 736-744.
［13］L?GERON F, PAULTRE P, MAZAR J. Damage mechanics modeling of nonlinear seismic behavior of concrete structures［J］. J Struct Eng, ASCE, 2005, 131(6): 946-954.
［14］钢筋混凝土结构设计规范(TJ10—74)［Ｓ］, 1974.
［15］工业与民用建筑抗震设计规范(TJ11—78)［Ｓ］．1978.
［16］PRESTLEY M J N, TAO J R. Seismic response of precast prestressed concrete frame with partially debonded tensions［J］. PCI Journal, 38(1):58-69.