|Table of Contents|

Investigation on seismic behavior of masonry walls with small openings(PDF)

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

Issue:
2023年03期
Page:
92-101
Research Field:
建筑结构
Publishing date:

Info

Title:
Investigation on seismic behavior of masonry walls with small openings
Author(s):
LI Chao;  GUO Meng
(China Academy of Building Research, Beijing 100013, China)
Keywords:
masonry structure;  masonry wall;  small opening;  low cycle cyclic loading test;  finite element analysis;  seismic performance
PACS:
TU362
DOI:
10.19815/j.jace.2022.03008
Abstract:
In order to study the seismic performance of masonry walls with small openings, three masonry walls with different small openings and a masonry wall without opening were designed for low cycle cyclic loading test. The main failure process and failure mechanism of masonry wall specimens were introduced, and the differences of seismic performance such as bearing capacity, lateral stiffness and ductility of each wall were compared and analyzed. In addition, based on the test, finite element models were established to study the effects of opening rate and opening location on the seismic performance of masonry walls. The results show that the failure mechanism of masonry walls with small openings have changed significantly compared with the masonry wall without opening. The wall without opening shows obvious rotational failure characteristics, but walls with small openings mainly show typical brittle shear failure. A single small opening will weaken the horizontal bearing capacity and lateral stiffness of the masonry wall, and greatly reduce the ductility of the wall. Increasing the number or height of openings can appropriately improve the seismic performance of the masonry wall with small opening. With the increase of opening rate, the bearing capacity and initial stiffness of the wall gradually decrease, and the ductility first decreases and then increases. In the vertical direction, the lower the opening, the worse the seismic performance of the wall. In the horizontal direction, the opening should be arranged in the middle.

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Last Update: 2023-05-20