| 轻骨料钢管混凝土短柱受火后力学性能的试验研究 |
| |
| 引用本文： | 王新堂,周明,王万祯,仇心金. 轻骨料钢管混凝土短柱受火后力学性能的试验研究[J]. 土木工程学报, 2011, 0(12) |
| |
| 作者姓名： | 王新堂 周明 王万祯 仇心金 |
| |
| 作者单位： | 宁波大学;西安建筑科技大学;宁波大自然新型墙材有限公司; |
| |
| 基金项目： | 国家自然科学基金(51078187); 浙江省科技计划项目(2008C23013); 宁波市自然科学基金(2009A610138) |
| |
| 摘 要： | 钢管陶粒混凝土不仅具有陶粒混凝土轻质的特点,也拥有一般钢管混凝土结构的良好延性,但目前对火灾后钢管陶粒混凝土结构的性能还缺乏研究。通过对3组12根钢管陶粒混凝土短柱受火后力学性能的对比试验研究,讨论不同参数的钢管陶粒混凝土短柱受火后的剩余承载力和破坏形态的变化,重点讨论火灾最高保持温度、最高炉温持续时间、试件长细比、含钢率等参数对钢管陶粒混凝土短柱承载力和延性的影响。试验结果表明,钢管陶粒混凝土短柱受火后仍然具有较高的承载力和良好的延性,火灾后多数试件的荷载-位移曲线并没有出现下降段,甚至出现承载力部分下降后又重新上升的趋势。火灾持续时间及最高炉温对钢管陶粒混凝土短柱火灾后承载力的影响幅度与试件的几何参数有关,且试件的长细比越大,最高炉温变化对承载力所产生的影响越显著。
|
| 关 键 词： | 轻骨料 火灾作用后 钢管陶粒混凝土短柱 力学性能 剩余承载力 |
Experimental study on the mechanical behavior of lightweight concrete filled steel tubular short columns after fire |
| |
| Wang Xintang, Zhou Ming Wang Wanzhen Qiu Xinjin. Experimental study on the mechanical behavior of lightweight concrete filled steel tubular short columns after fire[J]. China Civil Engineering Journal, 2011, 0(12) |
| |
| Authors: | Wang Xintang Zhou Ming Wang Wanzhen Qiu Xinjin |
| |
| Affiliation: | Wang Xintang1,2 Zhou Ming2 Wang Wanzhen1 Qiu Xinjin3(1.Ningbo University,Ningbo 315211,China,2.Xi'an University of Architecture & Technology,Xi'an 710055,3.Ningbo Daziran New Type Wall Material Co.,Ltd.,Ningbo 315336,China) |
| |
| Abstract: | Ceramsite concrete filled steel tube(CCFST) has not only the advantage of lightweight,but also good ductility that the ordinary concrete-filled steel tube structure has.However,study on the performance of CCFST structure after fire is still on the exploration stage.The mechanical behavior of twelve unprotected short columns of CCFST after fire was experimentally investigated.Effects of the parameters,such as the maximum value of fire temperature,fire duration,and slenderness ratio of the specimen and steel ... |
| |
| Keywords: | lightweight aggregate after fire ceramsite concrete filled steel tabular short column mechanical behavior residual bearing capacity |
| 本文献已被 CNKI 等数据库收录！ |
|
