| 盛飞国,程 桦,张效智.钢支撑代替混凝土支撑对深基坑支护结构影响的数值分析[J].安徽建筑大学学报,2015,23(2):43-48 |
| 钢支撑代替混凝土支撑对深基坑支护结构影响的数值分析 |
| Steel Support instead of Concrete Reinforced Support numerical analysis of the impact for deep foundation pit supporting structure |
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| DOI：10.11921/j.issn.2095-8382.20150209 |
| 中文关键词: 基坑支护结构 钢筋混凝土支撑 钢支撑 数值分析 |
| 英文关键词: supporting structure of foundation pit concrete reinforced support steel support numerical analysis. |
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| 中文摘要: |
| 深基坑施工时为了控制开挖影响，第一道支撑一般采用钢筋混凝土支撑，但这往往给施工带来不便。本文通过采用有限元计算软件Midas GTS，对合肥地铁某基坑部分预留混凝土支撑用钢支撑代替的支撑体系以及围护结构进行了数值分析，得出基坑支护结构的受力及变形特性。研究结果表明:用钢支撑代替部分钢筋混凝土支撑其围护结构变形为最终弯矩增大2%，最终水平位移减小了3.4%，得出围护结构最大位移发生在0.5~0.7H（H为基坑深度）,从而为施工方案的更改提供理论依据，加快了施工进度。 |
| 英文摘要: |
| In order to control the impact of deep excavation，the first support must use concrete support，but it often brings inconvenience to the construction. In this paper, by using steel support replace the part reserved concrete support，supporting system and retaining structure deformation were analyzed by using Midas-GTS numerical simulation software. The results show that the first support using concrete reinforced support replace steel support is feasible，and the building envelope maximum displacement occurs at 0.5 ~ 0.7H. The results will provide a theoretical basis for the change of construction scheme and make the construction progress become fast. |
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