基于抗力平衡法的“梦想之城”地下室抗浮分析与设计

发布时间：2018-06-14 10:01

本文选题：地下室抗浮 + 结构设计　；参考：《湘潭大学》2017年硕士论文

【摘要】：在实际工程中,由于地质情况错综复杂,基础形式各不相同,地下室结构的抗浮问题一直是重中之重。因此,对直接承受水浮力的地下室结构底板,在水浮力作用下的状态进行力学分析并进行设计具有理论和实际意义。本文的主要内容如下:概括了地下室在水浮力作用下相关的研究背景和意义,以及地下室在水浮力作用下的失效形态和常见的地下室抗浮方案,归纳整理了常用的抗浮设计方法以及相关规范在地下室抗浮方面的具体规定,综述国内外对水浮力的认识和研究进展。对地下室底板在地下水浮力的作用下的受力过程,采用理论分析与数值模拟相结合的方法,运用弹性力学薄板弯曲理论,选取了具有代表性的区格板进行了理论计算,然后与数值模拟进行弹性阶段对比分析。根据数值模拟分析结果,得到了在水浮力作用下地下室底板的受力特点。归纳整理了地下室抗浮设计的一般方法,结合混凝土结构设计理论,从方案设计、结构分析、构件设计和施工图绘制四个主要方面进行了设计方法综述,总结了地下室底板的计算方法和构件设计过程。以中视“梦想之城”地下室为工程背景,在方案设计阶段,基于抗力平衡法,选取适用的抗浮锚杆方案,采用盈建科建筑结构计算软件建立结构计算模型并进行初步试算,进行了整体结构分析和地下室抗浮分析,根据结构分析得到的最不利内力进行独立基础、抗浮锚杆、底板的设计,最后绘制了相关结构施工图。
[Abstract]:In practical engineering, because of the complicated geological conditions and different foundation forms, the anti-floating problem of basement structure is always the most important. Therefore, it is of theoretical and practical significance to carry out mechanical analysis and design of the basement floor under the action of water buoyancy. The main contents of this paper are as follows: the research background and significance of basement under the action of water buoyancy, the failure form of basement under the action of water buoyancy and the common anti-floating schemes of basement are summarized. This paper summarizes the common anti-floating design methods and the specific provisions of the relevant codes in the basement anti-floating, and summarizes the understanding and research progress of the water buoyancy at home and abroad. For the stress process of basement floor under the action of underground water buoyancy, the theoretical analysis and numerical simulation are used to calculate the typical grid plate by using the bending theory of elastic thin plate. Then the elastic stage is compared with the numerical simulation. According to the results of numerical simulation, the stress characteristics of basement floor under the action of water buoyancy are obtained. This paper summarizes the general methods of anti-floating design of basement, combined with the theory of concrete structure design, summarizes the design methods from four main aspects: scheme design, structural analysis, component design and construction drawing. The calculation method and component design process of basement floor are summarized. Taking the basement of "Dream City" as the engineering background, in the design stage of the project, based on the resistance balance method, the suitable anti-floating anchor scheme is selected, and the structure calculation model is established by the building structure calculation software of Ying Jianco and the preliminary trial calculation is carried out. The whole structure analysis and the basement anti-floating analysis are carried out. According to the most unfavorable internal force obtained from the structural analysis, the independent foundation, anti-floating anchor rod and bottom plate are designed. Finally, the construction drawings of the related structures are drawn.
【学位授予单位】：湘潭大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU93

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