约束剪力墙对SRC框排架结构破坏模式及耗能性能的影响研究
|
摘要
通过SRC框排架模型结构拟动力试验、伪静力试验以及结构中典型SRC异型节点的伪静力试验,研究约束剪力墙对结构破坏模式与耗能性能的影响。结果表明:剪力墙能够起到第一道抗震防线的作用,形成利于抗震的破坏模式;薄弱部位随着地震作用的增强由煤斗层、运转层到底部两层下移;结构的荷载-位移滞回曲线比较饱满,耗能性能较好;剪力墙对结构中SRC异型节点的裂缝开展具有很好的约束作用,沿纵横向同时布置约束剪力墙能够改善该类节点的破坏模式;约束剪力墙可明显提高SRC异型节点的耗能性能、承载能力与延性性能。该研究可为推广应用SRC框排架结构体系提供基础研究资料。
Pseudo-dynamic and pseudo-static tests of a SRC frame-bent model structure,and pseudo-static test of typical SRC abnormal joints were conducted to analyze the influence of constraint shear wall on the structure's failure mode and energy dissipation performance. The results showed that the shear wall is the first aseismic line of the structure to make the failure model be helpful to resist earthquakes; the weak part of the structure moves down from coal hopper floor and operation floor to two bottom stories with increase in earthquake intensity; the load-displacement hysteretic curve is plump,and the energy dissipation performance is better; the shear wall has a significant restraint effect on the crack developing of SRC abnormal joints,and setting constraint shear walls along both vertical and horizontal direction can improve the failure mode of this kind of joints; setting constraint shear wall can enhance the energy dissipation performance,force- bearing capacity and ductility performance of SRC abnormal joints obviously. The research results provided basic research data for promoting the application of SRC frame-bent structures.
Pseudo-dynamic and pseudo-static tests of a SRC frame-bent model structure,and pseudo-static test of typical SRC abnormal joints were conducted to analyze the influence of constraint shear wall on the structure's failure mode and energy dissipation performance. The results showed that the shear wall is the first aseismic line of the structure to make the failure model be helpful to resist earthquakes; the weak part of the structure moves down from coal hopper floor and operation floor to two bottom stories with increase in earthquake intensity; the load-displacement hysteretic curve is plump,and the energy dissipation performance is better; the shear wall has a significant restraint effect on the crack developing of SRC abnormal joints,and setting constraint shear walls along both vertical and horizontal direction can improve the failure mode of this kind of joints; setting constraint shear wall can enhance the energy dissipation performance,force- bearing capacity and ductility performance of SRC abnormal joints obviously. The research results provided basic research data for promoting the application of SRC frame-bent structures.
引文
[1]吴涛,白国良,刘伯权.大型火力发电厂钢筋混凝土框排架主厂房结构抗震性能试验研究[J].建筑结构学报,2007,28(3):46-52.WU Tao,BAI Guo-liang,LIU Bo-quan.Experimental study on seismic behavior of RC frame-bent structure of a largescale power plant[J].Journal of Building Structures,2007,28(3):46-52.
[2]吴涛,刘伯权,白国良,等.大型火力发电厂钢筋混凝土框架异型边节点抗震性能及设计方法研究[J].建筑结构学报,2005,26(5):17-22.WU Tao,LIU Bo-quan,BAI Guo-liang,et al.Study on seismic behavior and design method of large-scale thermal power plant RC frame with abnormal exterior joints[J].Journal of Building Structures,2005,26(5):17-22.
[3]白国良,康灵果,白涌滔,等.高烈度区大容量火电厂主厂房新型结构体系整体试验研究报告[R].西安:西安建筑科技大学土木工程学院资料室.
[4]GB 50011-2010.建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[5]姚谦峰.土木工程结构试验[M].北京:中国建筑工业出版社,2008.
[6]JGJ 138-2001.型钢混凝土组合结构技术规程[S].北京:中国建筑工业出版社,2001.
[7]吴涛.大型火力发电厂钢筋混凝土框排架结构抗震性能及设计方法研究[D].西安:西安建筑科技大学,2003.
[8]张春涛,李正良,王汝恒,等.冷弯薄壁方钢管梁柱加腋节点抗震性能研究[J].振动与冲击,2012,31(15):60-67.ZHANG Chun-tao,LI Zheng-liang,WANG Ru-heng,et al.Experimental research on seismic behavior of beam-column connection with welded haunch in cold-formed thin-walled square steel tube structure[J].Journal of Vibration and Shock,2012,31(15):60-67.
[9]邓志恒,林倩,胡强,等.新型钢桁架连梁的抗震性能试验研究[J].振动与冲击,2012,31(1):76-81.DENG Zhi-heng,LIN Qian,HU Qiang,et al.Test for aseismic behavior of new steel truss coupling beams[J].Journal of Vibration and Shock,2012,31(1):76-81.
[10]白国良,秦福华.型钢混凝土原理与设计[M].上海:上海科学技术出版社,2002.
[2]吴涛,刘伯权,白国良,等.大型火力发电厂钢筋混凝土框架异型边节点抗震性能及设计方法研究[J].建筑结构学报,2005,26(5):17-22.WU Tao,LIU Bo-quan,BAI Guo-liang,et al.Study on seismic behavior and design method of large-scale thermal power plant RC frame with abnormal exterior joints[J].Journal of Building Structures,2005,26(5):17-22.
[3]白国良,康灵果,白涌滔,等.高烈度区大容量火电厂主厂房新型结构体系整体试验研究报告[R].西安:西安建筑科技大学土木工程学院资料室.
[4]GB 50011-2010.建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[5]姚谦峰.土木工程结构试验[M].北京:中国建筑工业出版社,2008.
[6]JGJ 138-2001.型钢混凝土组合结构技术规程[S].北京:中国建筑工业出版社,2001.
[7]吴涛.大型火力发电厂钢筋混凝土框排架结构抗震性能及设计方法研究[D].西安:西安建筑科技大学,2003.
[8]张春涛,李正良,王汝恒,等.冷弯薄壁方钢管梁柱加腋节点抗震性能研究[J].振动与冲击,2012,31(15):60-67.ZHANG Chun-tao,LI Zheng-liang,WANG Ru-heng,et al.Experimental research on seismic behavior of beam-column connection with welded haunch in cold-formed thin-walled square steel tube structure[J].Journal of Vibration and Shock,2012,31(15):60-67.
[9]邓志恒,林倩,胡强,等.新型钢桁架连梁的抗震性能试验研究[J].振动与冲击,2012,31(1):76-81.DENG Zhi-heng,LIN Qian,HU Qiang,et al.Test for aseismic behavior of new steel truss coupling beams[J].Journal of Vibration and Shock,2012,31(1):76-81.
[10]白国良,秦福华.型钢混凝土原理与设计[M].上海:上海科学技术出版社,2002.