中国水利水电科学研究院学报2017，Vol.15Issue(2)：96-100,106,6.DOI:10.13244/j.cnki.iwhr.2017.02.003
全级配混凝土轴拉应力-变形全曲线试验研究
Test study on the tensile stress-deformation curve of fully-graded concrete
张艳红 1胡晓 1杨陈1
作者信息
- 1. 中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京100048
- 折叠
摘要
Abstract
Tensile stress-deformation curve of fully-graded concrete is very important for the nonlinear response calculation and the critical seismic capability analysis of dams.In this paper,the advanced closed-loop servo testing machine is used to perform the axial tension test on Φ450 mn×l 300 mm cylindrical specimens (max aggregate size of 150 mm) under the control of displacement mode,from which the complete curves of tensile stress versus tensile deformation in given range are obtained.After the maximum load,cyclic loads under different stress levels are applied to study the unloading and reloading curves.Simple equations are suggested to fit the complete stress-deformation curves and the unloading/reloading curves of the fully-graded concrete.This paper provides a reference basis for the dam concrete model building in numerical analysis.关键词
水工结构工程/全级配混凝土/轴向拉伸试验/应力-变形全曲线/应变率Key words
hydraulic structure engineering/fully-graded concrete/axial tension test/stress-deformation curve/strain rate分类
建筑与水利引用本文复制引用
张艳红,胡晓,杨陈..全级配混凝土轴拉应力-变形全曲线试验研究[J].中国水利水电科学研究院学报,2017,15(2):96-100,106,6.
