模卡式节能墙体钢框架体系滞回性能研究
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摘要
设计制作了内填充榫卯砌块墙体的钢框架,对体系施加低周水平往复荷载。在往复荷载的作用下,在榫卯节点连接处产生了应力集中,榫头的上部边缘发生剪切破坏,使得插孔处混凝土被压碎,最终导致墙体与连接件发生脱离而体系破坏。开裂后,滞回曲线由梭形向弓形、反S形变化,开裂荷载约为极限荷载的48%,大于同类钢框架填充墙体的比值。说明榫卯结构改善了墙体的变形能力,在墙体达到极限荷载后,可保持裂而不倒。体系的能量耗散系数、等效粘滞阻尼比和延性优于普通填充墙体,说明榫卯结构提高了墙体的耗能能力进而提高了抗震能力。
A steel frame infilled with mortice-tenon wall is designed and made.Reciprocal horizontal loads are applied to the frame-wall system.Stress concentration occurs at the connection of mortice and tenon under the reciprocal loads.The top edge of tenon is cracked by shear force,in which the concrete is crushed.The system failed because the wall broken away from connector.After cracking,hysteretic curve has changed from shuttle shape to arc or reversed S shape.Cracking load is 48 percentage of ultimate load,which is more than the ratio of other walls.It means the mortice-tenon improves the deformation behavior.The infill wall is cracked but not collapsed under the ultimate load.Energy dissipation coefficient,equivalent viscous damping ratio and ductility are excelled those of current infill walls.It is shown that the mortice-tenon enhances the energy absorption and shock-resistant ability of the infill wall.
A steel frame infilled with mortice-tenon wall is designed and made.Reciprocal horizontal loads are applied to the frame-wall system.Stress concentration occurs at the connection of mortice and tenon under the reciprocal loads.The top edge of tenon is cracked by shear force,in which the concrete is crushed.The system failed because the wall broken away from connector.After cracking,hysteretic curve has changed from shuttle shape to arc or reversed S shape.Cracking load is 48 percentage of ultimate load,which is more than the ratio of other walls.It means the mortice-tenon improves the deformation behavior.The infill wall is cracked but not collapsed under the ultimate load.Energy dissipation coefficient,equivalent viscous damping ratio and ductility are excelled those of current infill walls.It is shown that the mortice-tenon enhances the energy absorption and shock-resistant ability of the infill wall.
引文
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[2]Simonson C J,Tao Y X.Simultaneous heat and moisture transfer in fiberglass insulation with transient boundary conditions[J].ASHRAE Transac-tions,1999,105(2):315-327.
[3]丁永刚.框支密肋壁板结构墙梁受力性能及设计计算方法研究[D].西安:西安建筑科技大学,2006.Ding Yonggang.Research on load-bearing performance and design method of frame-supported multi-ribbed wall beam[D].Xi’an:Xi’an Univer-sity of Architecture&Technology,2006.
[4]姚谦峰,田洁,黄炜.密肋复合墙板耗能性能及地震损伤分析[J].世界地震工程,2006,22(4):5-12.Yao Qianfeng,Tian Jie,Huang Wei.Analyses of hysteretic energy dissipation and seismic damage of multi-ribbed slab walls[J].World Earth-quake Engineering,2006,22(4):5-12.
[5]曹国华,王凤池,朱浮声,等.模卡式框架填充墙隔声性能研究[J].沈阳建筑大学学报:自然科学版,2007,23(5):772-774.Cao Guohua,Wang Fengchi,Zhu Fusheng,et al.Sound insulation of the assembly wall of modulus mortise type[J].Journal of Shenyang Jianzhu University(Natural Science),2007,23(5):772-774.
[6]Crisafulli F J,Carr A J,Park R.Aralytical modelling of infilled frame structures-a general review[J].Bulletin of the NewZealand National Society foe Earthquake Engineering,2000,33(1):30-47.
[7]Nadjai A,Kirby P.Collapse of infilled steel frames with seimi-rigid connections[J].Proceedings of the Institution of Civil Engineers:Structures and Buildings,1998,(128):103-111.
[8]JGJ101-96,建筑抗震试验方法规程[S].JGJ101-96,Specification of testing methods for earthquake resistant building[S].
[9]管克俭,李捍无,彭少民.空腔结构复合填充墙-钢框架抗侧力性能试验研究[J].世界地震工程,2003,13(3):73-77.Guan Kejian,Li Hanwu,Peng Shaomin.Experimental research on lateral resistant behavior of steel frame with cavity sandwich wall infill[J].World Earthquake Engineering,2003,13(3):73-77.
[10]吴芸,吴华英,张溶,等.狗骨式刚性连接钢框架结构抗震性能试验研究[J].武汉理工大学学报,2003,25(5):37-39.Wu Yun,Wu Huaying,Zhang Rong,Peng Shaomin.Experimental study on seismic behaviors of dog-bone connection Steel frame[J].Journal of Wuhan University of Technology,2003,25(5):37-39.
[11]戴绍斌,黄俊,管克俭.空腔结构砌体复合填充墙钢框架极限承载力分析及抗震计算[J].世界地震工程,2003,19(4):63-68.Dai Shaobin,Huang Jun,Guan Kejian.Ultimate bearing capacity analysis and earthquake resistant computation of steel frame with cavity sandwich infill wall[J].World Earthquake Engineering,2003,19(4):63-68.
[12]戴绍斌,余欢,黄俊.填充墙与钢框架协同工作性能非线性分析[J].地震工程与工程振动,2005,25(3):24-28.Dai Shaobin,Yu Huan,Huang Jun.Non-linear analysis of coordinated working performance between infilled wall and steel frame[J].Journal of Earthquake Engineering and Engineering Vibration,2005,25(3):24-28.
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