选煤厂生产厂房结构振动控制研究

发布时间：2018-04-26 16:26

本文选题：工业厂房结构 + 结构动力分析　；参考：《河南理工大学》2014年硕士论文

【摘要】：选煤厂生产厂房是选煤生产的主要场所,厂房结构体系的安全不容忽视。据笔者现场考查,某矿选煤厂生产厂房的结构体系存在着很大的安全隐患,很多主次梁在其上部振动筛多年的运转振动下都出现了开裂及漏筋的现象,究其原因,一方面是在设计时未考虑动荷载的影响,另一方面是在事后修补时只是采取简单的加固措施,并未从根本上解决问题,因此,有关工业厂房的消能减振问题是一个普遍需要解决的课题。为了消除选煤厂生产厂房结构由振动设备引起的振动,本文研究一种面向振动筛的新型吸振结构,并安装在原有结构体系上,从改变原有结构体系的动力特性和吸收振动两个方面,彻底消除生产厂房结构体系由振动筛所引起的振动,确保厂房结构体系的永久安全性。主要研究内容如下:1、振动设备支撑结构动力分析模型的建立与振动特性分析;2、振动设备对其支撑结构动力性能的影响;3、振动设备的转速对其支撑结构的动力损伤分析;4、吸振方案设计;5、吸振结构的理论分析;6、吸振结构的试验研究。理论分析和试验研究表明:用吸振结构控制并消除工业厂房的振动是完全可行的。
[Abstract]:The production plant of coal preparation plant is the main place of coal preparation, and the safety of plant structure system can not be ignored. According to the on-the-spot investigation by the author, the structural system of the production plant of a certain coal preparation plant has a great hidden danger of safety. Many primary and secondary beams have cracked and leaked tendons under the running vibration of the upper shaker for many years, and the reasons are investigated. On the one hand, the effect of dynamic load is not taken into account in the design; on the other hand, simple reinforcement measures are taken in the course of repair, which does not solve the problem fundamentally. The problem of energy dissipation and vibration reduction in industrial buildings is a common problem that needs to be solved. In order to eliminate the vibration caused by vibration equipment, a new type of vibration absorbing structure for vibrating screen is studied and installed on the original structure system. From the aspects of changing the dynamic characteristics of the original structure system and absorbing the vibration, the vibration caused by the vibrating screen is completely eliminated, and the permanent safety of the powerhouse structure system is ensured. The main research contents are as follows: the establishment of dynamic analysis model and vibration characteristic analysis of vibration equipment supporting structure, the influence of vibration equipment on the dynamic performance of supporting structure, and the dynamic damage of vibration equipment speed to its supporting structure. The design of vibration absorption scheme is 5, the theoretical analysis of vibration absorption structure is 6, and the experimental study of vibration absorption structure is presented. The theoretical analysis and experimental study show that it is feasible to control and eliminate the vibration of industrial buildings by using vibration absorbing structure.
【学位授予单位】：河南理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU311.3

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