| 应变率效应对钢筋混凝土柱的影响 |
| |
| 引用本文： | 肖诗云,许东.应变率效应对钢筋混凝土柱的影响[J].防灾减灾工程学报,2009,29(6):668-675. |
| |
| 作者姓名： | 肖诗云 许东 |
| |
| 作者单位： | 大连理工大学土木水利学院,辽宁,大连,1161324 |
| |
| 基金项目： | 国家自然科学基金项目，辽宁省高等学校创新团队项目 |
| |
| 摘 要： | 根据混凝土单轴动力特性试验,引入了应变率的影响,对规范给出的混凝土应力—应变关系表达式进行了修正;针对只考虑混凝土的动态特性和既考虑混凝土的动态特性、也考虑钢筋的动态特性这两种情况,利用修正的表达式对钢筋混凝土柱的动态特性进行了数值分析。结果表明,混凝土的动态特性对于大偏心柱的承载力影响很小,但对于小偏心柱的极限承载力影响显著;钢筋的动态特性对大、小偏心柱的极限弯矩和极限曲率都有明显的影响。本文还分析了柱的极限弯矩、极限曲率和极限轴力随偏心距变化的规律。
|
| 关 键 词： | 钢筋混凝土柱 应变率 弯矩 曲率 |
Influence of Strain Rates on Reinforced Concrete Column |
| |
| XIAO Shi-yun,XU Dong.Influence of Strain Rates on Reinforced Concrete Column[J].Journal of Disaster Prevent and Mitigation Eng,2009,29(6):668-675. |
| |
| Authors: | XIAO Shi-yun XU Dong |
| |
| Institution: | XIAO Shi-yun,XU Dong(School of Civil and Hydraulic Engineering,Dalian University of Technology,Dalian 116024,China) |
| |
| Abstract: | According to the uniaxial dynamic experimental results of concrete,stress-strain relationship of concrete given by design code of reinforced concrete is modified taking into account the effect of strain rates of concrete.Then dynamic characteristics of reinforced concrete column are studied using the modified expression.Two situations are considered:(1) only dynamic characteristics of concrete are considered(2) dynamic characteristics of concrete and steel are considered.The result of numerical analysis sho... |
| |
| Keywords: | reinforced concrete column strain rate bending moment curvature |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
