带梁式转换的高层建筑结构抗震性能分析
发布时间：2018-08-02 12:05
【摘要】：随着社会进步,人们对于建筑的功能要求越来越高,下部作为公共场所需要大空间,而上部作为住宅或者办公楼则需要小空间,因此常常设置转换层来满足受力要求和功能要求。梁式转换具有其特殊优势,在工程中广泛采用,发展空间很大。本文介绍了本课题的研究背景和现实意义,阐述了转换结构的研究现状,总结了结构抗震理论及其计算方法。算例为一带梁式转换的结构,分析了转换位置和结构外围落地剪力墙厚度不同时高层结构的抗震性能。首先使用SATWE对比分析了不同模型结构的地震反应,比如剪力、位移等;再使用Midas/gen采用振型反应谱与动力弹性时程分析法,将二者结果进行对比。对不设转换和在第1、3、5层分别设梁式转换时的高层结构,比较分析其抗震性能(包括自振周期、剪力、位移和位移角等),发现无转换层和转换层设在第1层时,结构特性基本一致,其楼层剪力、层间位移、位移角等基本相同;随着转换位置改变,周期、楼层剪力、倾覆力矩、楼层位移没有明显的变化,而在高位转换时层间剪力、层间位移、位移角在转换位置发生突变,并且转换位置越高,地震反应就越剧烈,突变就越严重;外围落地剪力墙越薄,各层剪力也越小,只是转换结构下面楼层要比上面楼层减小得更多,而层间位移则明显增大,并且转换结构下面楼层比上面楼层增大得更多,从而在结构设计时,需要注意转换层上下刚度比的控制;全楼板弹性假定较全楼板刚性假定和仅转换层弹性假定下结构的层间位移更大,抗震变形验算时应按全楼板弹性假定验算结构变形;根据地震动的有效峰值、频谱特性和持时来合理的选择地震波,再将时程法与反应谱法的结果对比,结果基本相同,即使控制所选地震波的峰值一致,由于其频谱特性不同,造成不同的地震波所得到的动力时程分析结果也存在一定的差异。
[Abstract]:With the progress of society, people have higher and higher demands on the function of buildings. The lower part of the building needs a large space as a public place, while the upper part of a building needs a small space as a residence or office building. Therefore, the conversion layer is often set to meet the stress requirements and functional requirements. Beam-type conversion has its special advantages, widely used in engineering, great space for development. This paper introduces the research background and practical significance of this subject, expounds the present research situation of the conversion structure, summarizes the seismic theory of the structure and its calculation method. The seismic behavior of high-rise structures with different thickness of floor shear wall and transfer position is analyzed. First, the seismic responses of different model structures, such as shear force, displacement, etc., are compared by SATWE, and then by Midas/gen, the modal response spectrum and dynamic elastic time-history analysis are used to compare the two results. The aseismic performance (including natural vibration period, shear force, displacement and displacement angle, etc.) of high-rise structures without conversion and with beam type transfer on the 1st floor is compared and analyzed. It is found that when the transfer layer and the transfer layer are located on the first floor, the seismic behavior of the high-rise structure is compared and analyzed, which includes the natural vibration period, the shear force, the displacement and the displacement angle, etc. The characteristics of the structure are basically the same, its floor shear force, interstory displacement, displacement angle and so on are basically the same; with the change of position, period, floor shear force, overturning moment and floor displacement, there is no obvious change. The interstory displacement, the angle of displacement changes in the transition position, and the higher the transition position, the more violent the earthquake response is, and the more serious the sudden change is, the thinner the surrounding shear wall is, the smaller the shear force is on each floor. It's just that the lower floor of the conversion structure is much smaller than the upper floor, while the interstory displacement is significantly increased, and the lower floor of the conversion structure is much larger than the upper floor, so that when the structure is designed, It is necessary to pay attention to the control of the ratio of the upper and lower stiffness of the transfer floor, the elastic assumption of the whole floor is larger than that of the rigid assumption of the whole floor and the interstory displacement of the structure under the elastic assumption of only the transfer floor, and the structural deformation should be checked according to the elastic assumption of the whole floor when checking the seismic deformation. According to the effective peak value of ground motion, the frequency spectrum characteristic and the duration of seismic wave, and then comparing the results of the time process method with the response spectrum method, the results are basically the same, even though the peak value of the seismic wave controlled by the selected seismic wave is the same, because of its different spectrum characteristics, There are also some differences in the results of dynamic time history analysis for different seismic waves.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU973.31
本文编号：2159377
[Abstract]:With the progress of society, people have higher and higher demands on the function of buildings. The lower part of the building needs a large space as a public place, while the upper part of a building needs a small space as a residence or office building. Therefore, the conversion layer is often set to meet the stress requirements and functional requirements. Beam-type conversion has its special advantages, widely used in engineering, great space for development. This paper introduces the research background and practical significance of this subject, expounds the present research situation of the conversion structure, summarizes the seismic theory of the structure and its calculation method. The seismic behavior of high-rise structures with different thickness of floor shear wall and transfer position is analyzed. First, the seismic responses of different model structures, such as shear force, displacement, etc., are compared by SATWE, and then by Midas/gen, the modal response spectrum and dynamic elastic time-history analysis are used to compare the two results. The aseismic performance (including natural vibration period, shear force, displacement and displacement angle, etc.) of high-rise structures without conversion and with beam type transfer on the 1st floor is compared and analyzed. It is found that when the transfer layer and the transfer layer are located on the first floor, the seismic behavior of the high-rise structure is compared and analyzed, which includes the natural vibration period, the shear force, the displacement and the displacement angle, etc. The characteristics of the structure are basically the same, its floor shear force, interstory displacement, displacement angle and so on are basically the same; with the change of position, period, floor shear force, overturning moment and floor displacement, there is no obvious change. The interstory displacement, the angle of displacement changes in the transition position, and the higher the transition position, the more violent the earthquake response is, and the more serious the sudden change is, the thinner the surrounding shear wall is, the smaller the shear force is on each floor. It's just that the lower floor of the conversion structure is much smaller than the upper floor, while the interstory displacement is significantly increased, and the lower floor of the conversion structure is much larger than the upper floor, so that when the structure is designed, It is necessary to pay attention to the control of the ratio of the upper and lower stiffness of the transfer floor, the elastic assumption of the whole floor is larger than that of the rigid assumption of the whole floor and the interstory displacement of the structure under the elastic assumption of only the transfer floor, and the structural deformation should be checked according to the elastic assumption of the whole floor when checking the seismic deformation. According to the effective peak value of ground motion, the frequency spectrum characteristic and the duration of seismic wave, and then comparing the results of the time process method with the response spectrum method, the results are basically the same, even though the peak value of the seismic wave controlled by the selected seismic wave is the same, because of its different spectrum characteristics, There are also some differences in the results of dynamic time history analysis for different seismic waves.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU973.31
【参考文献】
相关期刊论文 前10条
1 王琦;陈鸽;;转换梁开洞的受力影响分析[J];四川建材;2016年02期
2 李俞谕;肖岩;刘涛;曹大燕;;双型钢混凝土转换梁柱节点抗震性能试验研究[J];建筑结构学报;2014年07期
3 王智军;王斌;李银文;;结构动力弹塑性分析地震波的选取原则[J];兰州理工大学学报;2013年04期
4 陈超云,傅学怡;转换梁刚度对柱支剪力墙梁式转换结构抗震性能的影响[J];建筑科学;2004年01期
5 魏琏,王森;转换梁上部墙体受力特点及设计计算方法的研究[J];建筑结构;2001年11期
6 唐兴荣,何若全;高层建筑中转换层结构的现状和发展[J];苏州城建环保学院学报;2001年03期
7 邓军,唐家祥;时程分析法输入地震记录的选择与实例[J];工业建筑;2000年08期
8 徐培福,王翠坤,郝锐坤,肖从真;转换层设置高度对框支剪力墙结构抗震性能的影响[J];建筑结构;2000年01期
9 娄宇,丁大钧,魏琏;高层建筑中转换层结构的应用和发展[J];建筑结构;1997年01期
10 王亚勇,刘小弟,程民宪;建筑结构时程分析法输入地震波的研究[J];建筑结构学报;1991年02期
，本文编号：2159377
本文链接：https://www.wllwen.com/jianzhugongchenglunwen/2159377.html
