| 钢管约束下轻集料混凝土的紧箍效应及强度准则 |
| |
| 引用本文： | 吉伯海,杨明,陈甲树,周文杰.钢管约束下轻集料混凝土的紧箍效应及强度准则[J].桥梁建设,2006(4):11-14. |
| |
| 作者姓名： | 吉伯海 杨明 陈甲树 周文杰 |
| |
| 作者单位： | 1. 河海大学,江苏,南京,210098
2. 江苏省电力设计院,江苏,南京,210024 |
| |
| 基金项目： | 国家高技术研究发展计划(863计划);江苏省建设厅资助项目 |
| |
| 摘 要： | 通过钢管约束下核心轻集料混凝土的紧箍效应试验,得到核心混凝土在轴压作用下应力~变形关系曲线及试件破坏形态,重点对轻集料混凝土的紧箍效应及强度准则进行分析研究。试验和计算结果表明,在钢管的约束作用下,轻集料混凝土的延性和强度显著提高,但紧箍效应比普通混凝土小。根据试验结果建立了三向受压轻集料混凝土的强度准则。
|
| 关 键 词： | 钢管混凝土 轻集料混凝土 紧箍效应 强度准则 |
| 文章编号： | 1003-4722(2006)04-0011-04 |
| 收稿时间： | 2005-12-30 |
| 修稿时间： | 2005年12月30 |
Confinement Effect and Strength Criterion of Lightweight Aggregate Concrete Confined By Steel Tube |
| |
| JI Bo-hai,YANG Ming,CHEN Jia-shu,ZHOU Wen-jie.Confinement Effect and Strength Criterion of Lightweight Aggregate Concrete Confined By Steel Tube[J].Bridge Construction,2006(4):11-14. |
| |
| Authors: | JI Bo-hai YANG Ming CHEN Jia-shu ZHOU Wen-jie |
| |
| Institution: | 1. Hohai University, Nanjing 210098, China;2. Jiangsu Provincial Electric Power Design Institute, Nanjing 210024, China |
| |
| Abstract: | Through experimental investigation of confinement effect of core lightweight aggregate concrete(LWAC) confined by steel tube,the stress-strain relations of the core LWAC under axial compression and failure modes of the specimens thereof are obtained,and the confinement effect and strength criterion of the LWAC are then analytically studied in details.The results of the experimental investigation and calculation reveal that the ductility and strength of the LWAC confined by steel tube are significantly improved,however the confinement effect of the LWAC is smaller than that of the normal concrete.In accordance with the experimental investigation results,the strength criterion of the LWAC under triaxial compression is established. |
| |
| Keywords: | concrete-filled steel tube lightweight aggregate concrete confinement effect strength criterion |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
