既有钢筋混凝土框架结构加固后整体抗震性能分析
发布时间：2018-11-12 16:49
【摘要】：我国的建筑房屋有相当一部分在上世纪竣工新建,不是处于服役期的末尾,就是在设计施工时对抗设防和抗震构造的要求没有考虑;世界上绝大多数发达国家的建筑业朝着“大规模新建阶段”与“新建与修缮加固并重阶段”的趋势进行发展,我国的建筑业随着时间的推移也朝向这一趋势;结构的抗震性能由于自然环境和人类活动的影响而不断地降低,我们需要对这种类型的建筑结构进行检测维修以及加固。本文结合工程实际,对钢筋混凝土框架结构进行抗震鉴定加固与分析,本文进行研究的一系列工作如下:(1)整理分析了玉树地震汶川地震等最近几年地震中钢筋混凝土结构房屋破坏情况,对框架结构房屋的震害特征进行了归纳,并解析了各种损坏的因素。为之后的抗震鉴定加固工作的进行提供基础。(2)依据已有的现场检测结果对本文所提钢筋混凝土框架结构实际工程的概况进行了抗震鉴定分析工作。鉴定结果表明,有一部分构件不能达到抗震规范要求;然后使用PKPM软件对构件进行抗震承载力验算,计算结果表明,部分构件不满足抗震规范的规定。该工程结构的抗震鉴定结论为需要进行加固。(3)分析了增大截面法、外粘型钢法粘贴纤维复合材料法等加固方法的适用范围和施工工艺,根据抗震鉴定分析和计算结果对该结构确定了加固设计方案,并进行了抗震加固设计。然后对不满足要求的梁柱等结构实施加固;使用反应谱方法对结构加固后的构件进行了弹性阶段的抗震性能验算,结果表明加固后的主体结构及构件符合规范要求。(4)对加固后的结构进行了抗震性能分析,依据层间位移角这一性能指标,采用静力弹塑性分析方法(Push-over法)对加固后的结构进行整理思考分析然后与加固前的弹塑性分析的结构进行了做了比较分析。分析得出结果为:加固后的结构不仅其抗震设防类别,抗震等级均能满足现行设计规范要求而且符合抗震设计三水准的要求。
[Abstract]:Quite a part of the buildings in our country were completed and built in the last century, either at the end of the service period, or in the design and construction of the anti-fortification and anti-seismic structure requirements were not considered; The construction industry of most of the developed countries in the world is developing towards the "large-scale new construction stage" and "new construction and renovation and reinforcement phase", and the construction industry of our country is also moving towards this trend with the passage of time. Due to the influence of natural environment and human activities, the seismic performance of structures is continuously reduced. We need to examine, repair and reinforce this type of building structures. In this paper, the reinforced concrete frame structure seismic identification and analysis combined with the actual engineering, this study of a series of work as follows: (1) finishing and analysis of the Yushu earthquake? In recent years, the damage of reinforced concrete structure houses in Wenchuan earthquake is summarized, the damage characteristics of frame structure buildings are summarized, and various damage factors are analyzed. It provides the foundation for the subsequent seismic identification and reinforcement work. (2) based on the existing field test results, the seismic identification analysis of the reinforced concrete frame structure is carried out in this paper. The results show that some of the components can not meet the requirements of the seismic code, and then use PKPM software to check the seismic bearing capacity of the members, the calculation results show that some of the components do not meet the requirements of the seismic code. The conclusion of seismic evaluation of the engineering structure is that it needs to be strengthened. (3) the method of increasing cross section and the method of external adhesion steel are analyzed. According to the analysis and calculation results of seismic identification, the reinforcement design scheme of the structure is determined, and the seismic reinforcement design is carried out. And the beams that don't meet the requirements? Strengthening of structures such as columns; Response spectrum method is used to check the seismic behavior of the strengthened members in the elastic stage. The results show that the strengthened main structure and the members meet the requirements of the code. (4) the seismic behavior of the strengthened structures is analyzed. According to the performance index of interstory displacement angle, the static elastic-plastic analysis method (Push-over method) is used to analyze the strengthened structure. The results show that the strengthened structure not only meets the requirements of the current design code but also meets the requirements of three levels of seismic design.
【学位授予单位】：安徽建筑大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TU375.4;TU352.11
[Abstract]:Quite a part of the buildings in our country were completed and built in the last century, either at the end of the service period, or in the design and construction of the anti-fortification and anti-seismic structure requirements were not considered; The construction industry of most of the developed countries in the world is developing towards the "large-scale new construction stage" and "new construction and renovation and reinforcement phase", and the construction industry of our country is also moving towards this trend with the passage of time. Due to the influence of natural environment and human activities, the seismic performance of structures is continuously reduced. We need to examine, repair and reinforce this type of building structures. In this paper, the reinforced concrete frame structure seismic identification and analysis combined with the actual engineering, this study of a series of work as follows: (1) finishing and analysis of the Yushu earthquake? In recent years, the damage of reinforced concrete structure houses in Wenchuan earthquake is summarized, the damage characteristics of frame structure buildings are summarized, and various damage factors are analyzed. It provides the foundation for the subsequent seismic identification and reinforcement work. (2) based on the existing field test results, the seismic identification analysis of the reinforced concrete frame structure is carried out in this paper. The results show that some of the components can not meet the requirements of the seismic code, and then use PKPM software to check the seismic bearing capacity of the members, the calculation results show that some of the components do not meet the requirements of the seismic code. The conclusion of seismic evaluation of the engineering structure is that it needs to be strengthened. (3) the method of increasing cross section and the method of external adhesion steel are analyzed. According to the analysis and calculation results of seismic identification, the reinforcement design scheme of the structure is determined, and the seismic reinforcement design is carried out. And the beams that don't meet the requirements? Strengthening of structures such as columns; Response spectrum method is used to check the seismic behavior of the strengthened members in the elastic stage. The results show that the strengthened main structure and the members meet the requirements of the code. (4) the seismic behavior of the strengthened structures is analyzed. According to the performance index of interstory displacement angle, the static elastic-plastic analysis method (Push-over method) is used to analyze the strengthened structure. The results show that the strengthened structure not only meets the requirements of the current design code but also meets the requirements of three levels of seismic design.
【学位授予单位】：安徽建筑大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TU375.4;TU352.11
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