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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

38卷

期数:

2021年05期

页码:

38-46

栏目:

出版日期:

2021-09-15

文章信息/Info

Title:

Experiment on Seismic Performance of Masonry Walls with Complex Facade Shapes

文章编号:

1673-2049(2021)05-0038-09

作者:

郭 猛¹,李薇薇²,贾英杰²

(1. 中国建筑科学研究院有限公司 建筑结构研究所,北京 100013; 2. 北京交通大学 土木建筑工程学院,北京 100044)

Author(s):

GUO Meng¹, LI Wei-wei², JIA Ying-jie²

(1. Institute of Building Structures, China Academy of Building Research, Beijing 100013, China; 2. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China)

关键词:

砌体结构;  砌体墙;  复杂立面形状;  低周反复荷载试验;  抗震性能

Keywords:

masonry structure;  masonry wall;  complex facade shape;  low cycle cyclic loading test;  seismic performance

分类号:

TU352.11

DOI:

10.19815/j.jace.2021.04007

文献标志码:

A

摘要:

为研究立面形状复杂砌体墙的抗震性能,选取4片不同立面形状的砌体墙进行了1:1比例低周反复荷载试验,介绍了砌体墙试件的主要破坏过程及破坏形态,分析了不同立面形状砌体墙的裂缝开展规律,对比了各片墙体的承载力、抗侧刚度、延性等抗震性能差异。结果表明:砌体墙立面形状(门窗洞口尺寸、位置)、墙端约束、加载方向等因素均会影响裂缝开展及墙体破坏形态,加载过程中砌体墙伴有明显的转动变形现象; 4片砌体墙均为非对称立面形状,正负向转动变形主体不同,砌体墙承载力、等效抗侧刚度的正负向差异较大,立面形状复杂的砌体墙受力全过程具有明显的方向性特征,试验中个别试件的正负向极限承载力相差约60%; 试验结论为进一步研究复杂立面形状砌体墙的抗震设计方法提供了试验数据与参考。

Abstract:

In order to study the seismic performance of masonry walls with complex facade shape, four masonry walls with different facade shapes were selected for 1:1 scale low cycle cyclic loading test. The main failure process and failure mode of masonry wall specimens were introduced, and the crack development laws of masonry walls with different elevations were analyzed. The differences of seismic performance such as bearing capacity, lateral stiffness and ductility of each wall were compared and analyzed. The results show that the facade shape of masonry wall(size and location of door and window openings), wall end constraint, loading direction and other factors can affect the crack development and wall failure mode. During the loading process, the masonry wall has obvious rotational deformation. The four masonry walls are all asymmetrical facade shape, the positive and negative two-way rotational deformation main body are different. There are big differences between positive and negative direction bearing capacity of masonry wall, equivalent lateral stiffness. The whole stress process of masonry wall with complex facade shape has obvious directional characteristics. The difference between positive and negative ultimate bearing capacity of some specimens is about 60%. The test results provide experimental data and reference for further research on seismic design method of masonry wall with complex facade shape.

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备注/Memo

备注/Memo:

收稿日期:2021-04-03
基金项目:国家自然科学基金项目(51778594)
作者简介:郭 猛(1982-),男,内蒙古赤峰人,研究员,工学博士,E-mail:guomeng673@163.com。

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更新日期/Last Update: 2021-09-01