构造板扩展基础静力性状分析及数值模拟

发布时间：2018-04-03 23:27

本文选题：测试分析　切入点：基底反力　出处：《东北大学》2014年硕士论文

【摘要】：构造板扩展基础是一种既不同于筏形基础也有别于扩展基础的新型基础形式,即在地基上柱间设置构造底板、柱下基础截面局部加厚、构造板与扩展基础整体浇筑且构造板受力筋贯通扩展基础配置。随着一些中小城市,十余层的建筑、住宅及多层建筑的出现,传统的筏形及箱形基础形式已无法满足经济的需求。构造板扩展基础作为一种新型的基础形式具有经济实用、构造简单、方便施工和使用等特点,目前对其静力受力性状的研究还不是很广泛,因此研究构造板扩展基础的静力受力性状具有现实意义。论文以辽宁省文化艺术中心和省博物馆新馆工程为背景,采用数值模拟结合理论计算的手段进行研究。首先,从工程测试数据出发,采用有限元法对基础的基底反力分布进行计算,然后针对国内外构造板扩展基础设计方法存在的问题,对构造板扩展基础进行优化设计。最后,在数值模拟实现对基础模型最真实的加载并得到基础的变形及内力变化规律。研究结果表明：采用有限元法计算构造板扩展基础的基底反力并用于数值模拟加载是可行的；在满足规范与使用要求的情况下,采用两种方法(包括扩展基础与柱间构造板分别设计和柱间构造板与扩展基础整体设计)对构造板扩展基础进行优化设计是合理的,因此在对构造板扩展基础进行设计时需要考虑构造板的承载力。采用数值模拟方法对构造板扩展基础的变形及内力变化规律进行研究,并为构造板扩展基础的设计提供参考是可行的。
[Abstract]:The structural plate expansion foundation is a new type of foundation which is different from the raft foundation as well as the extended foundation. In other words, there is a structural floor between the columns on the foundation, and the section of the foundation under the column is locally thickened.The structure plate and the expansion foundation are integrated and the structure plate is loaded through the extended foundation configuration.With the emergence of more than ten stories of buildings, housing and multi-storey buildings in some small and medium-sized cities, the traditional raft and box foundation forms can no longer meet the economic needs.As a new type of foundation, the expansion foundation of structural plate is economical and practical, simple in structure, convenient for construction and easy to use, etc. At present, the research on its static behavior is not very extensive.Therefore, it is of practical significance to study the static behavior of structural plate expansion foundation.Based on the project of Liaoning Provincial Culture and Art Center and the Provincial Museum, this paper uses numerical simulation combined with theoretical calculation to study.Firstly, based on the engineering test data, finite element method is used to calculate the reaction distribution of the foundation, and then the optimization design of the structural plate expansion foundation is carried out in view of the problems existing in the design methods of the expansion foundation of the structural plate at home and abroad.Finally, the deformation and internal force of the foundation are obtained by numerical simulation.The results show that it is feasible to use the finite element method to calculate the base reaction force of the expanded foundation of the structural plate and to simulate the loading by numerical simulation.It is reasonable to use two methods (including the design of the extended foundation and the intercolumn structure plate and the integral design of the intercolumn structure plate and the expanded foundation) to optimize the design of the expansion foundation of the structural plate.Therefore, the bearing capacity of the structural plate should be considered in the design of the expansion foundation of the structural plate.Numerical simulation method is used to study the deformation and internal force variation of the structural plate expansion foundation, and it is feasible to provide a reference for the design of the structural plate expansion foundation.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU470

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