铁道科学与工程学报2016，Vol.13Issue(8)：1600-1606,7.
桥用砌体轴心受压应力－应变全曲线试验研究
Experi mental study on axial co mpression stress-strain full curves of the masonry for bridge
摘要
Abstract
In order to explore the deformation characteristics of compressed masonry for bridge and establish its constitutive relationship,an experimental research was carried out on 1-group masonry for bridge standard test piece under axial compression,20000KN grade heavy duty multifunctional structure experimental system .The rigid elements were adopted to the experiment which was based on the standard test method.In order to avoid sudden failure of the masonry specimens in descending segment as far as possible,the loading method of dis-placement control of constant rate was used in descending segment of stress-strain curve,and the auxiliary rigid element was adopted.The crack characteristic,the deformation characteristic,the ultimate bearing capacity under axial compression and ideal stress-strain full curves were obtained.The research results show that the fail-ure process of the masonry for bridge is similar to other masonry,it has significant brittle characteristics.Based on the experimental phenomena,the experimental data and the experimental results,the compressive constitutive relationship of the masonry for bridge is proposed.The curves equation is the sectional form.By fitting the experi-mental data,the result shows that the constitutive relationship is very close to the experimental results.It is sim-ple and practical,and it can provide a reference for the nonlinear analysis of practical engineering.关键词
桥用砌体/试验研究/应力-应变全曲线/本构关系Key words
the masonry for bridge/experimental research/stress-strain full curves/constitutive relationship分类
建筑与水利引用本文复制引用
蔡勇,吕晓勇,李得建,余志武..桥用砌体轴心受压应力－应变全曲线试验研究[J].铁道科学与工程学报,2016,13(8):1600-1606,7.基金项目
国家自然科学基金资助项目（51078354）；湖南交通科技项目 （）
