超限钢筋混凝土窑尾结构地震响应及设备隔震研究

发布时间：2018-02-11 17:11

本文关键词： 窑尾结构抗震性能设备隔震动力分析　出处：《武汉理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：窑尾结构是水泥生产线中的核心组成部分,其结构特点较突出,通常竖向荷载会较大,主体高度及层高也会较高。当采用钢筋混凝土形式建造窑尾结构时,所需建造费用成本相对较低,在经济水平相对较低的发展中国家仍具有广泛的应用并取得了较好的经济效益。但由于结构工艺特性的要求,仅能采用框架结构形式,在地震作用下窑尾结构各层层间位移和剪力均较大,导致主体结构梁柱等构件截面尺寸会较大,且该类窑尾主体结构的整体高度一般超过了我国规范相关要求,因此会对该类结构的广泛应用产生一定的制约影响。基于多国规范采用有限元软件SAP2000对实际工程钢筋混凝土窑尾结构进行有限元分析,研究该类窑尾结构的抗震性能特点并比较各国规范之间抗震设计的区别。为了使该类窑尾结构更加广泛地应用于其他发展中国家,本文进一步提出相关设备隔震处理措施。本文的主要研究内容如下:1、多国规范反应谱分析方法及隔震应用研究。比较欧洲、美国与我国抗震规范中关于反应谱分析方法之间区别并提取各国规范地震动参数的换算关系;并结合相关隔震理论,提出一种适用于该类窑尾结构新型的隔震方法。2、基于欧洲、美国及中国规范分别采用反应谱分析方法对传统的钢筋混凝土窑尾结构模型进行有限元分析,从不同规范下窑尾结构的基底剪力、层最大位移和层间位移角等方面分析了该类窑尾结构的抗震性能,并比较了各国规范在结构抗震设计方面的区别。通过对不同规范下窑尾结构的基底剪力、层最大位移和层间位移角的比较分析可知:欧美规范均是通过提高该类窑尾结构的地震作用来进行抗震设计,使窑尾结构在地震作用下能够完全依据结构自身强度来保证地震作用下的抗震能力,因此,传统窑尾结构梁柱截面尺寸较大。3、钢筋混凝土窑尾结构设备隔震分析。采用SAP2000分别对有无设置设备隔震装置的窑尾结构模型进行模态分析和动力分析。通过相关计算结果对比分析,了解该隔震方法的适用性;为该类窑尾结构更加广泛地应用于其他发展中国家提出相关设备隔震处理措施,也为后续的结构设计优化分析及为同类上部荷载较大的工业建筑抗震设计提供一种新的消能减震方法。
[Abstract]:Kiln tail structure is the core part of cement production line, its structural characteristics are more prominent, usually the vertical load will be larger, the main body height and storey height will be higher, when the reinforced concrete form is used to build kiln tail structure, The cost of construction is relatively low, and it still has a wide range of applications and good economic benefits in developing countries with relatively low economic levels. However, due to the requirements of structural technological characteristics, only the frame structure can be adopted. Under the action of earthquake, the displacement and shear force of each layer of kiln tail structure are large, which leads to the larger cross section size of the main structure Liang Zhu and other components, and the overall height of this kind of kiln tail structure is generally higher than the relevant requirements of the code of our country. The finite element software SAP2000 is used for finite element analysis of reinforced concrete kiln tailings in practical engineering based on the code of many countries. In order to make this kind of kiln rear structure more widely used in other developing countries, the characteristics of seismic performance of this kind of kiln tail structure are studied and the differences of seismic design among different codes are compared. The main contents of this paper are as follows: 1, the analysis method of multi-country normative response spectrum and the applied research of isolation. The difference between the response spectrum analysis methods in the seismic code of the United States and China and the extraction of the conversion relation of the seismic parameters of each country are obtained, and a new isolation method. 2, which is suitable for this type of kiln tail structure, is proposed, which is based on Europe, combining with the relevant isolation theory. In American and Chinese codes, the traditional reinforced concrete kiln tail structure model is analyzed by using the response spectrum analysis method, and the base shear force of the kiln tail structure under different specifications is analyzed. In this paper, the seismic performance of this type of kiln tail structure is analyzed in terms of maximum displacement and interstory displacement angle, and the differences in structural seismic design between different codes are compared. The comparison and analysis of the maximum and interstory displacement angles show that the European and American codes are designed for earthquake resistance by improving the seismic action of this type of kiln tail structure. In order to ensure the seismic capacity of kiln tail structure under earthquake action, the earthquake resistance of kiln tail structure can be guaranteed according to the strength of the structure itself. The traditional kiln tail structure Liang Zhu section size is larger. 3, reinforced concrete kiln tail structure equipment isolation analysis. The model of kiln tail structure with or without equipment isolation device is analyzed by SAP2000. Comparison and analysis of the calculated results, To understand the applicability of this isolation method, and to put forward some measures for isolation treatment of equipment for this type of kiln tail structure to be more widely used in other developing countries, It also provides a new energy dissipation and damping method for the subsequent optimization analysis of structural design and for the seismic design of industrial buildings with similar upper loads.
【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU375;TU352.1

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