双塔连体结构连接处采用铅芯橡胶支座减震方法的研究

发布时间：2018-01-14 13:31

本文关键词：双塔连体结构连接处采用铅芯橡胶支座减震方法的研究　出处：《吉林建筑大学》2017年硕士论文　论文类型：学位论文

【摘要】：伴随经济的迅速发展,科学技术的飞速前进,我们国家在各个方面也都走在了世界的前列。人们的生活水平逐渐提升,对建筑水平也提出了更高的要求。我们以前了解的建筑结构形式规则并且简单,现代的建筑结构形式随着建筑功能的综合化发展,也变得复杂多样。随着结构变得复杂,遇到的问题也越来越多,但是经过结构工作人员的不懈奋斗,越来越多技术上的难题被我们克服。目前的结构技术已经可以满足很多体型复杂的高层建筑,连体结构就是其中的一种结构形式。连体结构的含义其实不言而喻,就是在两座或几座高层建筑之间,用架空的连接体将这两座相邻的建筑物相互连接的结构形式。这样不仅可以满足建筑的造型要求,还能在符合正常的使用要求。连接体的跨度一般来说,是没有具体要求的,可大可小,大到几十米长,小可达到几米,其实无论大小,受力机理正确才是最重要的。连体结构的结构形式新颖,应用的范围也越来越广,得到越来越多的人的青睐。对于如何采用简单有效的方法来提高连体结构的抗震性,对实际工程,具有重大意义。本文首先对地震的概念以及地震给人们带来的影响在绪论中做了概述。此外,还对连体结构的分类和受力特点做了简要的介绍。列举了几种橡胶支座以及它们在地震作用下发挥的作用。然后建立了双塔连体结构模型和采用两种不同阻尼的铅芯橡胶支座的双塔连体结构模型。结合有限元分析软件SAP2000,对三种模型进行了模态分析,反应谱分析和时程分析,来对比铅芯橡胶支座在抗震中起到的作用。本文针对连体结构连接部分采用铅芯橡胶支座减震的方法进行了研究和分析,主要内容如下:1.初步分别对刚性连接的双塔连体结构模型和用铅芯橡胶支座连接的双塔连体结构进行理论验证,之后分别进行模态分析,具体内容就是对各自的周期、振型、质量参数进行研究论证。2.设定两种不同阻尼的铅芯橡胶支座模型,通过对其反应谱的研究,可以知道不同阻尼的铅芯橡胶支座与地震相应的相互联系,与此同时,得到在地震作用下建筑物的层间位移、层间位移角。3.通过在软件中模拟,输入三种不同强烈程度的天然地震波,分析刚性连接的双塔连体结构模型和铅芯支座的双塔连体模型,在不同的连接方式下,研究三条地震波的位移、加速度以及连接处的剪力。可以得到,一定的程度上,在主体结构与连体结构的相交处,放置铅芯橡胶支座可以有效的耗散地震作用。在一定范围内,铅芯橡胶垫的阻尼越大,层间位移和位移角显著减小。带有铅芯橡胶支座的模型,连接处剪力明显小于刚性连接处的剪力,这说明有了铅芯橡胶支座,明大大削弱了两个主体之间的联系。因此,在以后的双塔连体设计中,当采用铅芯橡胶支座时,双塔连体结构的设计,可以参照单塔结构设计进行,双塔之间相互制约的程度大大降低。所以,设计可以减少因双塔间相互制约而增加的加强构件措施。大大节省了材料,从而节约了资源,而且降低了成本,使其变得更加经济。这对双塔连体结构有着重大意义,用一个简单的办法,即可解决增强抗震性及加强结构稳定性的大问题。
[Abstract]:With the rapid development of economy, the rapid progress of science and technology, our country in all aspects are at the forefront of the world. Gradually improve people's living standard, also put forward higher requirements on the architecture level. The rules of structure we used to understand and simple, modern building structure with integrated architecture the function of development, became more and more complicated. With complicated structure, the problems are more and more, but through the efforts of staff structure, more and more problems on the technology we have now overcome. Structure technology can meet a lot of complex high-rise building structure form a connecting structure is one of them. In fact, the connecting structure meaning is self-evident, is between two or several high-rise buildings, the overhead will be connected the two adjacent buildings connected with each other The structure of the form. It can not only meet the requirements of the shape of the building, but also in line with the normal use of the connector span requirements. In general, there is no specific requirements, big and small, to tens of meters long, can reach a few meters, in fact, regardless of size, the force mechanism of the right is the most important. Structure connected structure is novel, more and more wide range of applications, more and more people of all ages. For how to use a simple and effective method to improve the resistance of the connecting structure, on the actual project, which is of great significance. Firstly, the influence of earthquake and the earthquake brought to people's concept is summarized in the introduction. In addition, also classification of connected structure and force characteristics are introduced. Several kinds of rubber bearings and the role they play in the earthquake are established. Then the Twin Towers connected structure model and mining Twin Towers with two different damping connecting structure model of lead rubber bearings. With the finite element analysis software SAP2000, the three models of modal analysis, response spectrum analysis and time history analysis, to contrast the lead rubber bearing in seismic application. Aiming at the conjoined were studied and analyzed. Method of connecting part of the lead rubber bearing damping, the main contents are as follows: 1. preliminary respectively on the structure model of connecting rigid connected Twin Towers and connected with the lead rubber bearing Twin Towers connecting structure to verify the theory, then the modal analysis of the specific content is on each cycle, vibration model, quality parameter studies.2. two different sets of damping of the lead rubber bearing model, through the study of the response spectrum, can know the relationship of different damping of lead rubber bearing and seismic response, and the same When building under earthquake displacement between layers, interlayer displacement angle.3. through simulation in software, natural earthquake wave input three different intensity, connected Twin Towers model analysis of rigid connection structure of conjoined Twin Towers model and lead rubber bearings, connecting in a different way, study on the displacement of three earthquake wave, acceleration and shear connection. Can be obtained, to a certain extent, at the intersection of the main structure and the connecting structure, placing the lead rubber bearing can dissipate the earthquake effectively. In a certain range, the lead core rubber pad damping ratio, interlayer displacement and displacement angle was significantly decreased with. The lead rubber bearing model, shear connection shear at significantly less than the rigid connection place, indicating that the lead rubber bearing, the greatly weakened between two bodies. Therefore, the design of conjoined Twin Towers in the future, When using lead rubber bearing, the design structure of conjoined Twin Towers, can refer to the structure design of single tower, mutual restriction between Twin Towers degree greatly reduced. Therefore, the design can be reduced due to the Twin Towers mutual restriction increased reinforcing member measures. Which greatly saves material, so as to save resources, and reduce the cost, make the it is more economic. It is of great significance to the Twin Towers connection, with a simple way, can solve the problem of seismic strengthening and enhancing the stability of structure.

【学位授予单位】：吉林建筑大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU973.31

【相似文献】