巨型框架—耗能支撑结构体系的抗震性能分析

发布时间：2018-05-05 03:40

本文选题：耗能减震 + 巨型框架　；参考：《辽宁工程技术大学》2014年硕士论文

【摘要】：地震是对人类威胁最大的一种突发性自然灾害。每一次地震的发生都会给人类带来不可磨灭的伤害,因此建筑结构的抗震研究一直是土木工程领域的热点课题。近几年来,由于经济的发展,人口的增长,人们生活的空间越来越紧迫,导致建筑结构不断沿竖向发展,这也就导致许多新的适合于超高层的结构体系的出现。同时,这些超高层建筑结构的抗震性能分析和研究也就成为了重中之重。目前,耗能减震技术的研究成为了土木工程领域抗震研究的主流。而巨型框架—耗能支撑结构体系就是适应时代发展并且结合耗能减震技术提出来的一种新的结构体系。本文首先介绍了巨型结构的类型和特点,在结构动力方程的基础上建立了耗能减震结构运动微分方程,采用时程分析法对耗能减震结构进行分析和计算；运用有限元软件Sap2000建立巨型框架—耗能支撑结构模型,通过分析结构顶层位移、顶层加速度和基底剪力,研究其在多遇和罕遇地震作用下的减震效果,并分析耗能支撑布置方式不同对结构的减震效果的影响。研究结果表明,巨型框架—耗能支撑结构体系在多遇和罕遇地震作用下减震效果明显,不仅能够减小结构的顶层位移和加速度,还大大减小了结构的基底剪力。巨型框架耗能支撑的布置方案不同对结构的减震效果也不同,在耗能支撑布置受到限制的情况下,耗能支撑布置在结构下部的相邻主结构层减震效果最好,而且结构的减震效果会随其布置的高度由低到高递减；当两个结构的耗能支撑都沿下部相邻柱结构层布置时,上部支撑刚度愈大减震效果最好；耗能支撑的耗能器沿支撑的中部布置减震效果最好。
[Abstract]:The earthquake is a kind of sudden natural disaster which is the greatest threat to human beings . Every occurrence of the earthquake will bring an irreversible damage to mankind , so the seismic research of the building structure has been a hot topic in the field of civil engineering . At the same time , the research of energy dissipation and damping technology has become the mainstream in the field of civil engineering . At present , the seismic performance analysis and research of energy dissipation and shock absorption technology have become the main trend of seismic research in the field of civil engineering .
Using Sap2000 finite element software Sap2000 to build a mega - frame - energy - consuming support structure model , the damping effect of the structure is studied by analyzing the top displacement , the top acceleration and the base shear force of the structure . The results show that the shock absorption effect of the mega - frame - energy - consuming supporting structure system under the action of multi - encounters and rare earthquakes is obvious , which not only can reduce the top - level displacement and acceleration of the structure , but also greatly reduce the basement shearing force of the structure .
when the energy dissipation support of the two structures is arranged along the lower adjacent column structure layer , the upper support rigidity is better than the damping effect ;
the energy - consuming supporting energy - consuming device has the best damping effect along the middle of the support .

【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU352.11

【参考文献】