| 空心方钢管混凝土轴压力学性能的试验 |
| |
| 引用本文： | 支正东,张大长,陈怀亮,孙雷.空心方钢管混凝土轴压力学性能的试验[J].南京工业大学学报(自然科学版),2007,29(4):68-72. |
| |
| 作者姓名： | 支正东 张大长 陈怀亮 孙雷 |
| |
| 作者单位： | 1. 南京工业大学,土木工程学院,江苏,南京,210009
2. 南京工业大学,土木工程学院,江苏,南京,210009;江苏省土木工程与防灾减灾重点实验室,江苏,南京,210009 |
| |
| 基金项目： | 南京工业大学开放试验基金 |
| |
| 摘 要： | 通过对15个方钢管圆孔混凝土轴压短柱的试验研究,考察轴压短柱的承载力特性和破坏模式;基于外侧方钢管的横向变形的发展规律,探讨外围钢管对核心混凝土的套箍作用.试验表明,方钢管圆孔混凝土短柱的核心混凝土达到一定厚度时,圆孔混凝土在径向能形成较好的拱效应,可以有效地防止外壁钢管局部失稳破坏,使构件横向变形得到充分发展,提高轴向承载力.
|
| 关 键 词： | 钢管混凝土 短柱 圆柱孔 轴心抗压 横向变形 方钢管混凝土 轴压短柱 力学性能 试验 axial compression center steel tube square mechanical property 轴向承载力 充分发展 构件 失稳破坏 局部 壁钢管 拱效应 径向 厚度 套箍作用 核心 |
| 文章编号： | 1671-7627（2007）04-0068-05 |
| 修稿时间： | 2007-03-15 |
Experiment on mechanical property of concrete-filled square steel tube with cylindric hollowness in the center under axial compression |
| |
| ZHI Zheng-dong,ZHANG Da-chang,CHEN Huai-liang,SUN Lei.Experiment on mechanical property of concrete-filled square steel tube with cylindric hollowness in the center under axial compression[J].Journal of Nanjing University of Technology,2007,29(4):68-72. |
| |
| Authors: | ZHI Zheng-dong ZHANG Da-chang CHEN Huai-liang SUN Lei |
| |
| Abstract: | Fifteen short cylindricly hollow concrete-filled square steel tube columns were tested under axial compressive load, and their failure mode and load bearing characteristics were investigated. Based on the development rule of transverse strain of external steel tube, the hooping effect of steel tube on core concrete was discussed. The conclusion is arch effect is formed well in the concrete between the cylindric hollowness and steel tube, when the thickness of concrete reaches certain value, and the local instability failure of external steel tube can be prevented. As a result, the column transverse deformation may fully develop, and the bearing capacity for axial compression may increase. |
| |
| Keywords: | concrete-filled steel tube short column cylindric hollowness axial compression transverse normal deformation |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
