以地下室顶板为高层结构嵌固端的分析研究

发布时间：2018-05-10 12:21

本文选题：嵌固端 + 土约束　；参考：《山东建筑大学》2017年硕士论文

【摘要】：随着城市社会经济的飞速发展,建筑功能朝着多元化的方向不断进步,由于城市人口不断密集和建筑用地日益紧张,这些因素促使着建筑物不断追求高度和深度,因此,高层、超高层的建筑越来越多呈现在我们的眼前,同时,人们对空间的利用也越来越向地下发展,大底盘的高层建筑逐渐受到人们推崇。在城市建筑的空间不断向高度和深度发展的时候,结构设计人员面临着一个很大的问题:嵌固端的选取与判定。嵌固端的选取合理与否,不仅涉及到结构的安全问题,而且关乎人们的生命财产的损失。影响嵌固端选取及判定的因素很多,当前规范对此也有一些相关规定,然而,对于地下室周围土体对嵌固端的影响分析,我国的现行规范对此的要求还很模糊,所以,对考虑地下室周围土体约束的情况下,高层建筑嵌固端的合理选取和判定,显得具有一定的意义。本文的研究工作主要体现在如下几个方面:第一章简单介绍了当前建筑物对空间利用的发展趋势,并列举的相关工程实例。简单总结了国内外学者对该问题的相关研究。第二章首先对嵌固端的涵义进行了相关的阐述,通过对力学嵌固和强度嵌固的对比分析,充分解释了两者的区别与联系。其次,详细列举了当前现行规范对嵌固端的具体规定,并对其相关条文进行了详细的解读;再者,对地下室受力的特点进行了详细分析;然后,本章简单介绍了地下室周围土体与结构的相互作用的几种分析方法,本文采用土弹簧的计算模型分析方法;最后,研究带地下室的结构,必须要选择合适的分析模型,经过本篇两种分析模型的对比分析得出,整体模型是更加合理的分析模型。第三章主要介绍了弹簧刚度法的相关理论,在应用该方法时如何确定弹簧刚度法的计算模型,并且对基床系数K进行了详细的解释和总结。简单介绍了SAP2000有限元软件的基本原理,并且详细解读了在SAP2000中如何实现弹簧单元模拟地下室周围土体对结构的约束。根据地下室与周围土体的约束类型不同,分别建立了三种不同的模型。在外部荷载相同的情况下,通过对三种模型进行弹性分析。第四章通过模型研究和工程实例对比分析,讨论了不同结构模型,在改变地下室周围土体侧向约束的条件下,对结构进行动力性能、内力特性及变行特点的分析。第五章主要针对前几章的分析结果,并作出了相关的结论。当然,最后对将来的继续工作,进行了一系列的展望。
[Abstract]:With the rapid development of urban society and economy, the function of architecture is developing in the direction of diversification. Because of the density of urban population and the increasing tension of construction land, these factors urge the buildings to pursue the height and depth constantly, therefore, the high buildings, More and more high-rise buildings appear in front of our eyes, at the same time, the use of space is also more and more underground, the high-rise buildings with large chassis are gradually praised by people. As the space of urban buildings develops to height and depth, structural designers are faced with a great problem: the selection and determination of fixed ends. The selection of embedded terminal is not only related to the safety of structure, but also to the loss of people's life and property. There are many factors that affect the selection and determination of embedded terminals. There are also some relevant provisions in the current code. However, for the analysis of the influence of soil around the basement on the embedded ends, the requirements of the current code of our country are still very vague, so, It is of great significance to select and judge the embedded ends of high-rise buildings with the constraint of soil around the basement. The research work of this paper is mainly reflected in the following aspects: the first chapter briefly introduces the development trend of the space utilization of buildings and enumerates the relevant engineering examples. A brief summary of the domestic and foreign scholars on the issue of related research. In the second chapter, the meaning of the embedded terminal is explained, and the difference and relation between the two are fully explained through the comparative analysis of the mechanical and the strength of the embedded terminal. Secondly, it enumerates the specific provisions of the current code on the embedded end in detail, and interprets the relevant provisions in detail. Furthermore, the characteristics of the stress in the basement are analyzed in detail. In this chapter, several analysis methods of interaction between soil and structure around basement are briefly introduced, and the calculation model of soil spring is used in this paper. Finally, in order to study the structure with basement, it is necessary to select an appropriate analysis model. Through the comparison and analysis of the two models, it is concluded that the whole model is a more reasonable analysis model. The third chapter mainly introduces the related theory of spring stiffness method, how to determine the calculation model of spring stiffness method in the application of this method, and gives a detailed explanation and summary of the coefficient K of the base bed. This paper briefly introduces the basic principle of SAP2000 finite element software, and explains in detail how to realize the spring element simulation of the soil around the basement in SAP2000. According to the constraint types of basement and surrounding soil, three different models are established. Under the same external load, the elastic analysis of three models is carried out. In the fourth chapter, the dynamic performance, internal force characteristic and changing behavior of the structure are analyzed under the condition of changing the lateral constraint of soil around the basement through the model study and the comparative analysis of engineering examples. The fifth chapter mainly aims at the analysis result of the previous chapters, and makes the related conclusion. Of course, at the end of the future work, a series of prospects.
【学位授予单位】：山东建筑大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU93;TU43

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