唐代殿堂型木构架带昂铺作层受力性能试验研究  

Experimental study on mechanical properties of paving layer with Angs of palace-style timber frame in Tang dynasty

作　　者：王娟[1,2] 张熙铭 涂冲 杨娜[1,2] WANG Juan;ZHANG Ximing;TU Chong;YANG Na(School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;Beijing's Key Laboratory of Structural Wind Engineering and Urban Wind Environment,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]北京交通大学土木建筑工程学院,北京100044 [2]北京交通大学结构风工程与城市风环境北京市重点实验室,北京100044

出　　处：《建筑结构学报》2023年第10期62-73,共12页Journal of Building Structures

基　　金：国家自然科学基金面上项目(51978038),高等学校学科创新引智基地计划项目(B13002)。

摘　　要：在唐代殿堂型木构架中,作为木柱与屋架间连接层的铺作层结构整体性强,纵横向联系紧密,受力复杂。为研究铺作层结构的受力性能,以唐代殿堂型木构架单跨铺作层为研究对象,制作了1∶3的缩尺模型并开展两级竖向荷载作用下的水平往复加载拟静力试验,分析铺作层结构的受力变形特征和滞回性能。结果表明:在外荷载作用下,铺作层模型出现了铺作转动、连梁段受弯和横向构件相对滑动等变形,其中一、二下昂在不同的加载方向呈现出不同的位移特征。在正向加载阶段,一下昂随铺作转动并滑动,二下昂斜向下滑动,至正向加载阶段末,一、二下昂昂头的水平位移占水平控制位移的56.93%和79.03%;负向加载阶段,一、二下昂受下部构件阻碍与之挤压并斜向上滑动,至负向加载阶段末,一二下昂昂头的水平位移占水平控制位移的49.81%和63.90%。铺作层模型的滞回曲线具有不对称性特征,负向半环更为饱满,这是由于负向加载阶段一、二下昂的滑动增大了铺作的负向转动角度和连梁段弯曲程度,进而提高了铺作转动以及连梁段受弯时的抗侧能力。竖向荷载能够有效提高铺作层模型的水平承载力、抗侧刚度和耗能能力,当竖向荷载为60 kN时,相较于30 kN的情况,铺作层模型的正(负)向水平承载力、正(负)向抗侧刚度和耗能能力分别提高了25.35%(42.15%)、25.97%(38.04%)和70.01%。In the Tang dynasty palace type wooden frame,as the connecting layer between the wooden columns and the roof truss,the paving layer has strong structural integrity,close vertical and horizontal connections,and complex stress.In order to study the mechanical performance of the paving layer structure,a 1∶3 scaled test model was made using the Tang dynasty hall type wooden frame single span paving layer as the research object.Horizontal reciprocating loading quasi-static tests were conducted under two levels of vertical loads to analyze the mechanical deformation characteristics and hysteresis performance of the paving layer structure.The results show that under external loads,the paving layer model undergoes deformation such as paving rotation,bending of the connecting beam segment,and relative sliding of the transverse components.The first and second lower Ang components exhibit different displacement characteristics in different loading directions:in the forward loading stage,the first and second lower Ang rotate and slide with the paving,and the second lower Ang slides diagonally downwards.At the end of the loading stage,the horizontal displacement of the first and second lower Ang heads accounts for 56.93%and 79.03%of the horizontal control displacement;In the negative loading stage,the first and second lower supports are obstructed by the lower components and slide diagonally upwards.At the end of the loading stage,the horizontal displacement of the first and second lower supports accounts for 49.81%and 63.9%of the horizontal control displacement.The hysteresis curve of the paving layer model has asymmetric characteristics,and the negative half ring is more full.This is because the sliding of the first and second lower Angs during the negative loading stage increases the negative rotation angle of the paving and the bending degree of the connecting beam section,improving the lateral resistance during the paving rotation process and the bending of the connecting beam section.The positive(negative)horizontal b

关 键 词：殿堂型木构架 铺作层 下昂 拟静力试验 受力性能 

分 类 号：TU366.2[建筑科学—结构工程]