带消能节点的梁柱式木结构民宅的抗震性能
|
摘要
以Q235钢制作的消能节点,将规格木材组合成的梁、柱连接成具有较大抗侧刚度的延性框架体系.该结构不使用我国传统木结构的榫卯连接,节点不削弱木构件,故具有更高的承载力;不需要北美轻型木结构体系中的墙体提供抗侧刚度,因而结构布置灵活,且节省材料.对采用该节点的木框架结构示范工程进行了结构分析和足尺节点的拟静力试验.结果表明:节点通过钢板的塑性变形消耗能量,具有良好的耗能能力;在考虑频遇地震作用参与的荷载标准组合作用时,结构的变形能满足现行建筑抗震设计规范的相关要求;在罕遇地震作用时,框架的弹塑性变形集中在消能节点上,层间相对弹塑性角位移小于1/50,达到我国现行规范抗震设防的目标.
The wood beams and columns were connected into moment frame system with large lateral stiffness and ductility by the energy dissipation joints of Q235 steel.Compared to traditional Chinese wooden structures,the proposed structure has higher loading capacity because no mortise-tenon connection is needed to joint columns and beams without weakened section of wooden members.Compared to the timber structures commonly used in North America,the buildings with the proposed structure are easier to be partitioned and are more economical without wooden shear wall to offer lateral stiffness.The structural analysis of a demo house with the system and the pseudo-static experiments for full scale joints were conducted.The results show that the joints have good capability to consume input energy by steel plastic deformation.The structure deflection can fulfill the requirements of the current code for seismic building design when the normal load combinations with frequency earthquake action were taken into account.Subjected to rare earthquake action,the plastic structure deformations are restricted in the joints with story drift less than 1/50 which is the criteria requirement of the code.The wooden frame with energy dissipation joints can meet the seismic fortification criterion of Chinese code.
The wood beams and columns were connected into moment frame system with large lateral stiffness and ductility by the energy dissipation joints of Q235 steel.Compared to traditional Chinese wooden structures,the proposed structure has higher loading capacity because no mortise-tenon connection is needed to joint columns and beams without weakened section of wooden members.Compared to the timber structures commonly used in North America,the buildings with the proposed structure are easier to be partitioned and are more economical without wooden shear wall to offer lateral stiffness.The structural analysis of a demo house with the system and the pseudo-static experiments for full scale joints were conducted.The results show that the joints have good capability to consume input energy by steel plastic deformation.The structure deflection can fulfill the requirements of the current code for seismic building design when the normal load combinations with frequency earthquake action were taken into account.Subjected to rare earthquake action,the plastic structure deformations are restricted in the joints with story drift less than 1/50 which is the criteria requirement of the code.The wooden frame with energy dissipation joints can meet the seismic fortification criterion of Chinese code.
引文
[1]黄东升,张志强,毛龙泉.汶川地震后绵竹、都江堰市房屋震害调查与分析[J].防灾减灾工程学报,2010,30(1):109-116.Huang Dongsheng,Zhang Zhiqiang,Mao Longquan.In-vestigation of building damages in Mianzhu and Dujiang-yan due to 5.12 Wenchuan Earthquake[J].Journal ofDisaster Prevention and Mitigation Engineering,2010,30(1):109-116.(in Chinese)
[2]谢启芳,赵鸿铁,薛建阳,等.中国古建筑木结构榫卯节点加固的试验研究[J].土木工程学报,2008,41(1):28-34.Xie Qifang,Zhao Hongtie,Xue Jianyang,et al.An ex-perimental study on the strengthening of mortise-tenonjoints in ancient Chinese wooden buildings[J].ChinaCivil Engineering Journal,2008,41(1):28-34.(inChinese)
[3]姚侃,赵鸿铁,葛鸿鹏.古建木结构榫卯连接特性的试验研究[J].工程力学,2006,23(10):168-173.Yao Kan,Zhao Hongtie,Ge Hongpeng.Experimentalstudies on the characteristic of mortise-tenon joint in his-toric timber buildings[J].Engineering Mechanics,2006,23(10):168-173.(in Chinese)
[4]何敏娟,Frank Lam.北美“轻型木结构”住宅建筑的特点[J].结构工程师,2004(1):1-5.He Minjuan,Frank Lam.Properties of north americanwood frame residential constructions[J].Structural En-gineers,2004(1):1-5.(in Chinese)
[5]熊海贝,徐硕,卢文胜.轻型木结构房屋基本自振周期试验研究[J].同济大学学报:自然科学版,2008,36(4):449-452,459.Xiong Haibei,Xu Shuo,Lu Wensheng.Test study of fun-damental periods of wood-frame houses[J].Journal ofTongji University:Natural Science,2008,36(4):449-452,459.(in Chinese)
[6]Pei S,van de Lindt J W.Influence of structural proper-ties and hazard level on seismic loss estimation for light-frame wood structures[J].Engineering Structures,2010(32):2183-2191.
[7]Ashraf Ayoub.Seismic analysis of wood building struc-tures[J].Engineering Structures,2007(29):213-223.
[8]Asiz A,Chui Y H,Doudak G,et al.Contribution ofplasterboard finishes to structural performance of multi-storey light wood frame buildings[J].Procedia Engi-neering,2011(14):1572-1581.
[9]Dogˇangün A,Tuluk O,Livaogˇlu R,et al.Traditionalwooden buildings and their damages during earthquakesin Turkey[J].Engineering Failure Analysis,2006(13):981-996.
[10]Yin Yue-Jun,Li Yue.Seismic collapse risk of light-framewood construction considering aleatoric and epistemicuncertainties[J].Structural Safety,2010(32):250-261.
[2]谢启芳,赵鸿铁,薛建阳,等.中国古建筑木结构榫卯节点加固的试验研究[J].土木工程学报,2008,41(1):28-34.Xie Qifang,Zhao Hongtie,Xue Jianyang,et al.An ex-perimental study on the strengthening of mortise-tenonjoints in ancient Chinese wooden buildings[J].ChinaCivil Engineering Journal,2008,41(1):28-34.(inChinese)
[3]姚侃,赵鸿铁,葛鸿鹏.古建木结构榫卯连接特性的试验研究[J].工程力学,2006,23(10):168-173.Yao Kan,Zhao Hongtie,Ge Hongpeng.Experimentalstudies on the characteristic of mortise-tenon joint in his-toric timber buildings[J].Engineering Mechanics,2006,23(10):168-173.(in Chinese)
[4]何敏娟,Frank Lam.北美“轻型木结构”住宅建筑的特点[J].结构工程师,2004(1):1-5.He Minjuan,Frank Lam.Properties of north americanwood frame residential constructions[J].Structural En-gineers,2004(1):1-5.(in Chinese)
[5]熊海贝,徐硕,卢文胜.轻型木结构房屋基本自振周期试验研究[J].同济大学学报:自然科学版,2008,36(4):449-452,459.Xiong Haibei,Xu Shuo,Lu Wensheng.Test study of fun-damental periods of wood-frame houses[J].Journal ofTongji University:Natural Science,2008,36(4):449-452,459.(in Chinese)
[6]Pei S,van de Lindt J W.Influence of structural proper-ties and hazard level on seismic loss estimation for light-frame wood structures[J].Engineering Structures,2010(32):2183-2191.
[7]Ashraf Ayoub.Seismic analysis of wood building struc-tures[J].Engineering Structures,2007(29):213-223.
[8]Asiz A,Chui Y H,Doudak G,et al.Contribution ofplasterboard finishes to structural performance of multi-storey light wood frame buildings[J].Procedia Engi-neering,2011(14):1572-1581.
[9]Dogˇangün A,Tuluk O,Livaogˇlu R,et al.Traditionalwooden buildings and their damages during earthquakesin Turkey[J].Engineering Failure Analysis,2006(13):981-996.
[10]Yin Yue-Jun,Li Yue.Seismic collapse risk of light-framewood construction considering aleatoric and epistemicuncertainties[J].Structural Safety,2010(32):250-261.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心