建筑结构学报2012，Vol.33Issue(11)：132-141,10.
既有砌体结构墙体植筋拉拔性能的理论分析与试验研究
Theoretical analysis and experimental research of pull-out behavior of bonded steel bar embedded in brick wall of existing masonry structure
周彬 1吕西林 1任晓崧1
作者信息
- 1. 同济大学结构工程与防灾研究所,上海200092
- 折叠
摘要
Abstract
The brick wall is comprised of bricks and mortar. The strength of brick wall is low, so it is necessary to do some research on the mechanical property and the failure mode of steel bar embedded in the brick wall. In this paper, according to cone failure mode, shear failure mode and bond failure mode, the calculation formulas of the ultimate pull-out load are deduced. The semi-empirical simplification formula dependent on the strength of brick wall and the embedment depth, is also presented. Pull-out tests on steel bars with different dimension and depth were carried out in 8 masonry structures, which were different in the material strength and construction time. The finite element analysis (FEA) was also carried out. The results of pull-out test and FEA were compared to the results of theoretical analysis, which verified the rationality of the simplified formula. Some suggestions are presented as follows: the strength of mortar must be higher than M2.0, the suggested embedment depth is between 100 mm to 150 mm and the suggested diameters of steel bar are 6 ram, 8 mm and 10 ram.关键词
既有砌体结构/植筋/理论分析/拉拔试验/有限元分析/拉拔性能Key words
existing masonry structure/post-installed steel bar/theoretical analysis/pull-out test/finite elementanalysis/pull-out behavior分类
建筑与水利引用本文复制引用
周彬,吕西林,任晓崧..既有砌体结构墙体植筋拉拔性能的理论分析与试验研究[J].建筑结构学报,2012,33(11):132-141,10.
