武侯祠桂荷楼穿斗木构架抗震性能研究  

Study on seismic behavior of Chuan-Dou timber frame of Guihe building in Wuhou Shrine

作　　者：徐娇 朱占元 李静 邹祖银 梁危 XU Jiao;ZHU Zhanyuan;LI Jing;ZOU Zuyin;LIANG Wei(College of Landscape Architecture,Sichuan Agricultural University,Chengdu 611130,China;College of Civil Engineering,Sichuan Agricultural University,Chengdu 611830,China;College of Architecture and Urban-Rural Planning,Sichuan Agricultural University,Chengdu 611830,China)

机构地区：[1]四川农业大学风景园林学院,四川成都611130 [2]四川农业大学土木工程学院,四川成都611830 [3]四川农业大学建筑与城乡规划学院,四川成都611830

出　　处：《地震工程与工程振动》2022年第5期211-219,共9页Earthquake Engineering and Engineering Dynamics

基　　金：四川省科技计划项目(2021YJ0073);国家自然科学基金项目(41672304);四川省教育厅科研创新团队项目(16TD0006)。

摘　　要：为探究构造差异对穿斗式木构架结构性能影响,文中采用数值分析方法,研究了在拟静力荷载作用下,桂荷楼标准横向、减柱造横向、纵向3种穿斗木构架的变形特性和抗震性能。研究表明:穿斗木构架侧向变形能力好,但节点受力复杂,各立柱受力不均,半榫、柱脚、直榫节点易滑移;穿斗木构架耗能能力优,耗能系数随加载位移增大而增大,地震能量主要由木结构底层承担;横向穿斗木构架底层刚度弱,一层的初始层间刚度为二层的65.94%,竖向刚度不规则,底层易损伤;纵向穿斗木构架二层刚度弱,二层的初始层间刚度为一层的60.82%,二层易变形;减柱造做法加剧节点滑移,使穿斗木构架一、二层刚度减小了19.36%、14.46%,底层承载能力降低20.60%。最后,根据骨架曲线,建立了穿斗木构架力学模型,提出了桂荷楼文物修缮措施建议。In order to study the influence of different constructs on the deformation characteristic and seismic behavior of the Chuan-Dou timber frame, three types of Chuan-Dou timber frames were simulated under quasi-static load, including standard transverse frame, transverse frame with column reduced and longitudinal frame of Guihe building. The results showed the Chuan-Dou timber frame had good deformation capacity, but the force of joint was complex. The force on each column was uneven, and the half tenon joint was prone to slip. The Chuan-Dou timber frame had excellent energy dissipation capacity, the energy dissipation coefficient increased with the increase of loading displacement, and the seismic energy was mainly borne by the bottom floor of the timber structure. The stiffness of the bottom floor of the transverse Chuan-Dou timber frame was weak, the initial interlaminar stiffness of the first floor was 65.94% of that of the second floor, the vertical stiffness was irregular, and the bottom layer was easy to be damaged. The stiffness of the second floor of the longitudinal Chuan-Dou timber frame was weak, and the initial interlaminar stiffness of the second floor was 60.82% of that of the first floor, and the second floor was easy to deform. The method of reducing column construction aggravates the joint slip, which reduced the stiffness of the first and second floors of the Chuan-Dou timber frame by 19.36% and 14.46%, and the bearing capacity of the bottom floor is 20.60%. Finally, according to the skeleton curve, the mechanical model of Chuan-Dou timber frame was established, and the repair measures for Guihe building were proposed.

关 键 词：穿斗木构架 抗震性能 减柱造 拟静力试验 武侯祠桂荷楼 

分 类 号：TU366.2[建筑科学—结构工程]