后张无粘结预应力装配式短肢剪力墙拟静力试验研究
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摘要
为研究两种基于干性连接的新型后张无粘结装配式短肢剪力墙——直接装配式和混合装配式短肢墙——的抗震性能,进行了两榀八层新型短肢剪力墙拟静力试验。试验结果表明:合理设计的后张无粘结装配式短肢剪力墙,可以实现"强墙弱梁";连梁的裂缝及损伤均只集中出现在连梁与墙肢的结合部,其它部分基本保持弹性;后张无粘结预应力装配式短肢剪力墙在地震作用下连梁大部分保持弹性,塑性变形主要出现连梁与墙肢的连接部位,有利于震后修复;混合装配式短肢墙因墙肢与连梁处纵向普通钢筋的加入,其极限承载力较直接装配式短肢墙提高了23%。
To research the seismic performance of the two kinds of new unbonded post-tensioned assembly short-limb shear walls(direct assembly and hybrid assembly short-pier wall)based on dry connection,the quasi-static test of two specimens of 8-story new short-limb shear walls is conducted.The test results show the unbonded post-tension short-limb shear wall based on reasonable design can realize strong limbs and weak coupling beams.The crack and damage of coupling beams are focused on the connection region of limbs and coupling beams.The rest region of coupling beams still remains elastic.Under the earthquake action,the main part of coupling beams of unbonded post-tensioned prestressing assembly short-limb shear walls remains elastic and the plastic deformation focus on the connection region of limbs and coupling beams,which is beneficial to post-earthquake reconstruction.The ultimate loading capacity of the hybrid assembly short-pier wall is 23 percent larger than that of the direct assembly short-pier wall due to the introduction of the longitudinal normal steel in the connection of limbs and coupling beams.
To research the seismic performance of the two kinds of new unbonded post-tensioned assembly short-limb shear walls(direct assembly and hybrid assembly short-pier wall)based on dry connection,the quasi-static test of two specimens of 8-story new short-limb shear walls is conducted.The test results show the unbonded post-tension short-limb shear wall based on reasonable design can realize strong limbs and weak coupling beams.The crack and damage of coupling beams are focused on the connection region of limbs and coupling beams.The rest region of coupling beams still remains elastic.Under the earthquake action,the main part of coupling beams of unbonded post-tensioned prestressing assembly short-limb shear walls remains elastic and the plastic deformation focus on the connection region of limbs and coupling beams,which is beneficial to post-earthquake reconstruction.The ultimate loading capacity of the hybrid assembly short-pier wall is 23 percent larger than that of the direct assembly short-pier wall due to the introduction of the longitudinal normal steel in the connection of limbs and coupling beams.
引文
[1]Pampanin S,Priestley M J N,Sritharan S.Analyticalmodeling of the seismic behavior of precast concreteframe designed with ductile connections[J].Journal ofEarthquake Engineering,2001,5(3):329-367.
[2]Morgen,B,Kurama,Y.A friction damper for post-ten-sioned precast concrete moment frames[J].PCI Jour-nal,2004,49(4):112-133.
[3]Garlock M,Ricles J,Sause R.Experimental studies onfull-scale posttensioned steel connections[J].Journalof Structural Engineering,2005,131(3):438-448.
[4]种迅,孟少平,潘其健,等.部分无黏结预制预应力混凝土框架及其节点抗震能力研究[J].地震工程与工程振动,2007,27(4):55-60.
[5]柳炳康,田井锋,张瑜中,等.低周反复荷载下预压装配式PC框架延性性能和耗能能力[J].建筑结构学报,2007,28(3):74-81.
[6]孙巍巍.后张无粘结预应力装配式短肢剪力墙抗震能力及设计方法研究[D].南京:东南大学土木工程学院,2008.
[7]彭飞,程文瀼,陆和燕.对称双肢短肢剪力墙的拟静力试验研究[J].建筑结构学报,2008,29(1):64-69.
[8]JGJ101-96,建筑抗震试验方法规程[S].
[9]范进.高温后预应力钢绞线性能的试验研究[J].南京理工大学学报,2004,28(2):186-189.
[2]Morgen,B,Kurama,Y.A friction damper for post-ten-sioned precast concrete moment frames[J].PCI Jour-nal,2004,49(4):112-133.
[3]Garlock M,Ricles J,Sause R.Experimental studies onfull-scale posttensioned steel connections[J].Journalof Structural Engineering,2005,131(3):438-448.
[4]种迅,孟少平,潘其健,等.部分无黏结预制预应力混凝土框架及其节点抗震能力研究[J].地震工程与工程振动,2007,27(4):55-60.
[5]柳炳康,田井锋,张瑜中,等.低周反复荷载下预压装配式PC框架延性性能和耗能能力[J].建筑结构学报,2007,28(3):74-81.
[6]孙巍巍.后张无粘结预应力装配式短肢剪力墙抗震能力及设计方法研究[D].南京:东南大学土木工程学院,2008.
[7]彭飞,程文瀼,陆和燕.对称双肢短肢剪力墙的拟静力试验研究[J].建筑结构学报,2008,29(1):64-69.
[8]JGJ101-96,建筑抗震试验方法规程[S].
[9]范进.高温后预应力钢绞线性能的试验研究[J].南京理工大学学报,2004,28(2):186-189.
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