抗震加固后砌体结构的抗震性能分析

发布时间：2018-01-17 15:00

本文关键词：抗震加固后砌体结构的抗震性能分析　出处：《中国石油大学（华东）》2013年硕士论文　论文类型：学位论文

【摘要】：近年来，随着砌体结构使用时间的增长和抗震设防烈度的提高，我国一部分既有砌体结构强度不够或者不满足现有抗震规范的要求，需进行抗震加固工作。唐山地震后，人们意识到了结构抗震的重要性，渐渐开始在全国范围内进行建筑物的抗震鉴定和加固。汶川地震后，很多学者对汶川地震中建筑结构的震害进行调查统计分析，砌体的破坏率是最高的，中小学砌体房屋倒塌导致众多师生丧生，引起了人们对于中小学建筑的高度重视。国务院近年来，统一部署实施了“百万校舍安全工程”，旨在提高中小学建筑的安全性，保证广大师生的生命财产安全。经过多年的大量的试验研究，砌体结构取得了一定的成果。本人在前人研究的基础上，通过有限元分析软件ASNYS分析多遇和罕遇地震作用下结构加固前后的振型和自振频率，以及最大位移及最大层间位移角，研究中小学砌体结构的地震反应和规律，，主要内容如下： 1阐述了既有建筑的特点、既有建筑鉴定加固的重要性和发展历程以及课题的背景和意义。 2分述了砌体结构的力学特性，罗列了砌体结构的震害及影响因素。 3介绍了目前常用的砌体结构的加固方法以及地震分析的反应谱分析和时程分析的理论及方法。 4对工程实际进行有限元分析，假定砌体结构无柱无圈梁，采用圈梁+构造柱的整体加固方法，分析比较加固前后砌体抗震性能变化。结果表明圈梁+构造柱的加固方法对结构加固起到了较好的作用，值得广泛推广。
[Abstract]:In recent years, with the increase of masonry structure usage time and the increase of seismic fortification intensity, some of the masonry structures in China are not strong enough or do not meet the requirements of the existing seismic code. After the Tangshan earthquake, people realized the importance of earthquake resistance of structures, and gradually began to carry out seismic identification and reinforcement of buildings throughout the country. After the Wenchuan earthquake. Many scholars investigate and analyze the earthquake damage of building structure in Wenchuan earthquake. The damage rate of masonry is the highest. The collapse of masonry buildings in primary and secondary schools results in the death of many teachers and students. In recent years, the State Council has unified the implementation of the "million school building safety project", aimed at improving the safety of primary and secondary school buildings. To ensure the safety of life and property of teachers and students. After many years of experimental research, masonry structure has achieved certain results. On the basis of previous studies, the finite element analysis software ASNYS is used to analyze the vibration pattern and natural vibration frequency of the structure before and after reinforcement under rare and rare earthquakes, as well as the maximum displacement and the maximum displacement angle between layers. The seismic response and regularity of masonry structures in primary and secondary schools are studied. The main contents are as follows: The main contents are as follows: 1. The characteristics of the existing buildings, the importance and development course of the existing building appraisal and reinforcement, and the background and significance of the subject are expounded. 2. The mechanical properties of masonry structure are described, and the earthquake damage and influencing factors of masonry structure are listed. 3. The strengthening method of masonry structure, the theory and method of response spectrum analysis and time history analysis of seismic analysis are introduced. 4 the finite element analysis is carried out on the engineering practice, assuming that the masonry structure has no column and no ring beam, the seismic behavior of masonry before and after reinforcement is analyzed and compared by using the integral reinforcement method of ring beam structure column. The results show that the reinforcement method of ring beam and column plays a good role in strengthening the structure, and it is worth popularizing widely.
【学位授予单位】：中国石油大学（华东）
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU364;TU352.11

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