构造特征对应县木塔柱头铺作受力性能的影响研究  

RESEARCH ON EFFECTS OF STRUCTURAL CHARACTERISTICS ON MECHANICAL PERFORMANCE OF ZHUTOU PUZUO IN YINGXIAN WOODEN PAGODA

作　　者：贺俊筱 杨文懿 李爱群[1,2,3,4] 刘崇治 蒋永慧[2,3] 王祥津 HE Jun-xiao;YANG Wen-yi;LI Ai-qun;LIU Chong-zhi;JIANG Yong-hui;WANG Xiang-jin(International Joint Laboratory of Safety and Energy Conservation for Ancient Buildings,Ministry of Education,Beijing 100044,China;School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Multi-Functional Shaking Tables Laboratory,Beijing University of Civil Engineering and Architecture.Beijing 100044,China;School of Civil Engineering,Southeast University,Nanjing 210096,China)

机构地区：[1]教育部古建筑安全与节能国际合作联合实验室,北京100044 [2]北京建筑大学土木与交通工程学院,北京100044 [3]北京建筑大学大型多功能振动台阵实验室,北京100044 [4]东南大学土木工程学院,南京210096

出　　处：《工程力学》2024年第11期33-44,共12页Engineering Mechanics

基　　金：国家自然科学基金项目(52108266,51978033);建大英才项目(JDYC20220808)。

摘　　要：铺作节点是应县木塔的重要组成节点之一,开展铺作的抗震性能研究对应县木塔的保护工作具有重要现实意义。该文主要进行了三层至五层的明层外槽柱头铺作的缩尺模型的拟静力抗震性能试验,研究了构造差异对柱头铺作抗震性能的影响。试验结果表明:具有不同构造特征的三个柱头铺作模型的铺数越多,其耗能能力越强,水平承载力越大。柱头铺作在正向加载时都是以转动变形为主,在负向既有转动变形也有滑移变形。铺数增加会降低构件滑移变形的占比。铺数减少时,柱头铺作模型在负向加载中滑移变形的占比越大,但是当某相邻两层之间的散枓或齐心枓枓耳被剪坏时,负向的滑移变形占比增加明显,DG-1、DG-2和DG-3构件间的最大滑移占比分别达到51%、47%和87%。三层至五层柱头铺作的构件滑移主要位置在模型的中、上端部分。该研究可为应县木塔的安全现状和修缮保护提供充分的基础保障。Zhutou Puzuo joint is an important component of Yingxian Wooden Pagoda.The study on the seismic performance of Puzuo for the protection of the Yingxian Wooden Pagoda is of considerable practical importance.The impacts of structural characteristics on the seismic performances of the Zhutou Puzuo are the focus of this study.Zhutou Puzuo models of the open-layer at the 3rd to 5th story are tested by the horizontal low cycle tests.Results show that:the more the number of Pu of the models with varied structural characteristics is,the stronger the energy dissipation capacity and the greater the horizontal bearing capacity are.In positive loading,rotational deformation of the Zhutou Puzuo is the predominated deformation,while both rotational and slip deformations predominate in negative direction.The proportion of slip deformation in components decreases with the increasing the number of Pu.In the negative loading,the proportion of slip deformation increases when the number of Pu decreases.However,slip deformation increases dramatically when the ears of Sandou or Qixindou between two adjacent layers are sheared in the negative loading.The maximum proportions of slip deformation of DG-1,DG-2 and DG-3 account for 51%,47%and 87%,respectively.The sliding components of the Zhutou Puzuo at the 3rd to 5th story are primarily located in the middle and upper portions of the model.The research can give a solid basis for the safety and rehabilitation of Yingxian Wooden Pagodas.

关 键 词：应县木塔 柱头铺作 构造特征 变形模式 受力性能 

分 类 号：TU366.2[建筑科学—结构工程]