深基坑论文：成灌快铁深基坑支护结构变形研究.docx

深基坑论文：成灌快铁深基坑支护结构变形研究 深基坑论文：成灌快铁深基坑支护结构变形研究 【中文摘要】本文以成灌快铁迎宾路车站基坑工程为研究对象,针对桩体的变形、钢支撑的支撑轴力和桩体钢筋的内力等监测数据进行分析。结合分析的结果对基坑的支护结构进行了数值模拟分析,采用数值模拟分析与现场监测相结合的方法,分析研究了影响基坑开挖时桩体的变形因素。1.概述了基坑工程的发展历史及当前基坑工程的发展现状和发展趋势。2.系统分析了基坑变形的特征、类型及控制机理。3.介绍了该工程监测的地形地貌及设计原则,对监测数据进行整理分析,研究在施工过程当中桩体的位移,地表的沉降及桩体内钢筋内力的变化规律,将监测数据与预警值进行对比,指导施工的安全顺利进行。4.采用 PLAXIS 岩土有限元分析软件,对快铁车站的开挖过程进行二维的有限元模拟,对数值模拟结果进行分析说明,将理论分析的变形曲线与实测的变形曲线进行对比,发现两者变化趋势一致,并对实测值与理论值产生差异的原因进行了分析说明,验证模型建立及参数选取的可靠性与合理性。5.采用 PLAXIS 岩土有限元分析软件,对影响快铁车站基坑开挖支护结构变形的因素进行建模分析,主要讨论分析了施工因素、设计因素和自然土质条件因素对其的影响,得到一般性的结论,最后提出深基坑变形的控制措施,为以后类似的工程施工提供参考。 【英文摘要】ChengGuan rapid railway YingBinLu station foundation pit engineering is taken as the object of study in 第 1 页第 1 页 深基坑论文：成灌快铁深基坑支护结构变形研究 this paper. Aimed at the monitoring datas of the pile deformation, the strut-axial forces of steel supports and the internal force of pile rebar and so on analysis. Numerical simulation analysis the pit supporting structure combining analysis results. Adopted the way of the theoretical analysis and numerical simulation method combining site monitoring, analyzed the pile deformation factors of foundation pit.1.Summarized the development history of excavation engineering, the current situation of the development of the excavation engineering and its development trend.2.System analyzed the foundation pit deformation characteristics of the types and control mechanism.3.Introduced the engineering monitoring of landform and design principles, Sorted out and analyzed the monitoring data, Researched the piles’ displacement in the construction process, surface subsidence and the change rule of reinforced internal force in pile body, compared with the monitoring datas and the warning values, guide the future construction safely.4.PLAXIS,an huge geotechnical engineering finite element program,has been introduced. 2d finite element analysised the excavation process of the station using PLAXIS, comparative analysised the theory of the deformation curve and the measured deform