带约束拉杆方形薄壁钢管/竹胶合板组合空芯柱轴心抗压性能

赵卫锋; 屈鹏; 周靖; 龙志林

doi:10.13801/j.cnki.fhclxb.20160218.001

带约束拉杆方形薄壁钢管/竹胶合板组合空芯柱轴心抗压性能

1.
湘潭大学土木工程与力学学院, 湘潭 411105;
2.
华南理工大学亚热带建筑科学国家重点实验室, 广州 510640

基金项目: 国家自然科学基金（51471139，51071134）；华南理工大学亚热带建筑科学国家重点实验室项目（2015ZB26）

详细信息

通讯作者:
龙志林,教授,博士生导师,研究方向为复合材料。E-mail:longzl@xtu.edu.cn

中图分类号: TB332;TU366.1
计量
- 文章访问数: 1077
- HTML全文浏览量: 75
- PDF下载量: 298
出版历程
- 收稿日期: 2015-10-20
- 修回日期: 2016-01-12
- 刊出日期: 2016-10-14

Axial compression behavior of square thin-walled steel tube/bamboo plywood composite hollow column with binding bars

1.
College of Civil Engineering and Mechanics, Xiangtan University, Xiangtan 411105, China;
2.
State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China

摘要

摘要: 为解决方形薄壁钢管/竹胶合板组合空芯柱（SBCC）在压缩载荷下易开胶失效的问题，提出了一种新型的带横向约束拉杆的方形薄壁钢管/竹胶合板组合空芯柱（SBCCB）。首先，对9根SBCCB进行了轴心抗压试验，考察了SBCCB受压破坏形态，分析了SBCCB的截面尺寸、长细比和截面组合方式对其开胶载荷和极限承载载荷的影响，并将SBCCB的极限压应力与已有的SBCC数据进行了比较；然后，通过非线性回归分析，建立了SBCCB轴心抗压承载力计算公式。结果表明：SBCCB的轴心抗压失效破坏主要为柱端及柱身横向约束拉杆之间的竹胶合板开胶失效和竹胶合板材料破坏失效，其极限承载力不仅与截面尺寸和长细比相关，而且受截面组合方式影响。设置横向约束拉杆可有效减缓开胶失效，改变极限破坏模式，显著提高极限承载力；与SBCC的极限压应力相比，SBCCB的极限压应力平均提高26%。
- 竹胶合板 /
- 方形薄壁钢管 /
- 约束拉杆 /
- 组合空芯柱 /
- 轴心抗压 /
- 极限承载力
Abstract: A new type of square thin-walled steel tube/bamboo plywood composite hollow column with horizontal binding bars (SBCCB) was proposed to solve the issue that the square thin-walled steel tube/bamboo plywood composite hollow column (SBCC) was liable to glue failure under compressive load. Nine SBCCB were used to perform the axial compression tests firstly. The failure modes of SBCCB loaded were investigated, the influences of the cross-sectional size, slenderness ratio and sectional combination mode of SBCCB on the glue failure load and ultimate bearing load of it were analyzed, and the ultimate compressive stress of SBCCB was compared with existing data of SBCC. Then, the calculating formula for the axial compression bearing-capacity of SBCCB was derived through the nonlinear regression analysis. The results indicate that the axial compressive failure damage of SBCCB is primarily the glue failure of bamboo plywood between horizontal binding bars of the end of column and the middle of column the glue failure as well as material broken damage of bamboo plywood. The ultimate bearing capacity is not only related to the cross-sectional size and slenderness ratio, but also affected by the sectional combination mode. By setting horizontal binding bars, the glue failure binding can be suppressed effectively, the ultimate failure mode changes, and the ultimate carrying capacity improves significantly. Compared with the ultimate compressive stress of SBCC, the ultimate compressive stress of SBCCB increases by 26% averagely.
- bamboo plywood /
- square thin-walled steel tube /
- binding bar /
- composite hollow column /
- axial compression /
- ultimate bearing capacity

HTML全文

参考文献(0)

施引文献(15)

期刊类型引用(6)

1.	赵卫锋，罗宗健，周靖，黎亚军，补国斌. 竹胶板-薄壁钢管约束收尘石粉混凝土组合柱轴压性能. 应用力学学报. 2022(01): 137-147 . 百度学术
2.	周靖，陈卓晟，赵卫锋，杨斌. 薄壁型钢管/胶合竹板组合空芯柱轴压试验研究. 工程力学. 2018(08): 91-99 . 百度学术
3.	赵卫锋，杨斌，周靖，陈卓晟. 带约束拉杆方钢管/竹胶合板组合柱轴压蠕变性能. 建筑材料学报. 2018(03): 465-471 . 百度学术
4.	周靖，陈卓晟，赵卫锋，杨斌. 带约束拉杆薄壁型钢管-竹胶板组合空芯长柱的轴压性能. 应用力学学报. 2018(03): 489-495+684 . 百度学术
5.	赵卫锋，唐凯，龙志林. 薄壁型钢管/胶合竹板复合柱抗震性能试验. 地震工程学报. 2018(03): 450-457 . 百度学术
6.	赵卫锋，谷伟，周靖，龙志林. 带约束拉杆钢管/竹胶板组合空芯短柱的偏心抗压性能. 农业工程学报. 2016(15): 75-82 . 百度学术