| STS管幕结构抗弯性能试验研究及参数优化 |
| |
| 引用本文： | 关永平,赵文,王连广,贾鹏蛟,赵朕,郝云超.STS管幕结构抗弯性能试验研究及参数优化[J].工程力学,2017,34(9):83-91. |
| |
| 作者姓名： | 关永平 赵文 王连广 贾鹏蛟 赵朕 郝云超 |
| |
| 作者单位： | 1.铁道第三勘察设计院集团有限公司, 天津 300142; |
| |
| 基金项目： | 国家自然科学基金项目（51578116） |
| |
| 摘 要： | 沈阳地铁某车站采用STS（Steel Tube Slab）管幕结构作为初期支护，在施工阶段需承受上覆土压力和路面荷载，其横向承载力对整个工程的安全尤为重要。该文基于6榀STS管幕简支梁的对称集中荷载抗弯试验，研究了STS管幕构件的破坏过程、裂缝开展模式及破坏机理，并对比分析了混凝土强度、钢管间距以及管间横向连接方式对承载力的影响规律。基于ABAQUS建立数值计算模型，进一步研究了钢管壁厚、翼缘板厚度等参数对STS管幕构件承载力的影响规律，并根据计算结果提供了翼缘板厚度与钢管壁厚之比的合理取值范围。研究成果将为STS管幕构件的设计提供参考依据。
|
| 关 键 词： | STS管幕 抗弯性能 破坏特征 参数优化 数值模拟 |
| 收稿时间： | 2016-04-07 |
STUDY ON PARAMETER OPTIMIZATION AND THE FLEXURAL BEHAVIOR OF STEEL TUBE SLAB STRUCTURES |
| |
| Affiliation: | 1.The 3rd Railway Survey & Design Institute, Tianjin, 300142, China;2.College of Resource and Civil Engineering, Northeastern University, Shenyang, Liaoning 110819, China;3.Shen Kan Engineering & Technology Corporation, MCC, Shenyang, Liaoning 110016, China;4.Engineering Survey & Design Company of China Railway Seventh Group Co., Ltd, Zhengzhou, He'nan 450016, China |
| |
| Abstract: | Steel tube slab (STS) components were adopted to construct a subway station in Shenyang Metro, whose load-carrying capacity has a significant impact on the whole project. Based on a flexural experiment of six simply supported STS specimens under four-point bending, this paper investigated the failure process and crack development of STS specimens, and obtained the load-deflection curves. The effects of the spacing between the tubes, concrete compressive strength and transverse connecting modes of tubes on the flexural capacity were studied. Based on the numerical simulation using ABAQUS software, a numerical model was established to investigate the effects of flange thickness, steel tube thickness on the flexural capacity of STS structures. According to the calculated results, the reasonable range of the ratio of flange to steel tube thickness is obtained. The research achievement will provide a theoretical support for the design of STS structures. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《工程力学》浏览原始摘要信息 |
|
点击此处可从《工程力学》下载全文 |
|
