钢板加固混凝土结构的抗震性能分析

发布时间：2018-04-08 15:49

本文选题：粘钢加固　切入点：静力弹塑性分析　出处：《河北联合大学》2014年硕士论文

【摘要】：2008年汶川地震以后，抗震设防问题成为专家和研究人员所关注的热点。通过资料调查显示，早期的建筑物由于当时设计的标准低，，不能满足现在抗震设防能力，导致震害损失严重。基于以上原因，随后国家颁布了新的抗震设计规范，早期的建筑物无法满足现今规范关于抗震设防的要求，需要对早期的建筑物按照新规范进行抗震能力评估，不能满足要求的，需要对其进行加固处理，从而最大限度的减少人员的伤亡和财产的损失。近年来，加固技术在国内外快速发展，而钢板加固具有硬化时间短、所占空间小、工艺简单、施工方便、粘贴牢固、受力均衡以及加固效果明显等的优势，得到了广大科研人员和施工人员的青睐。对混凝土结构加固的几种常用方法进行了详细介绍。通过对一栋2005年设计的二层幼儿园框架结构进行粘钢加固设计，再现了加固设计的基本假定、计算理论、计算方法、加固方案的选择以及加固构造方法等。结合加固工程实例，首先利用有限元分析软件SAP2000分别建立了粘贴钢板加固前后的钢筋混凝土结构的模型，对其进行了静力弹塑性分析，对其抗震能力进行了评估，并对其进行了对比分析。然后将模型导入Perform-3D中，在Perform-3D中进行了动力弹塑性分析，对其抗震能力进行了评估。最后选择了层间位移和楼层位移两个参数对静力弹塑性分析和动力弹塑性分析进行了对比，得出动力弹塑性分析的结果较静力弹塑性分析的结果偏大。
[Abstract]:After the Wenchuan earthquake in 2008, seismic fortification has become the focus of attention of experts and researchers.The investigation shows that the early buildings could not meet the present seismic fortification capacity due to the low design standards at that time, resulting in serious damage to the earthquake.For the above reasons, the country subsequently issued a new seismic design code. The early buildings could not meet the requirements of the current code for seismic fortification, so it is necessary to assess the seismic capacity of the early buildings according to the new code.If it can not meet the requirements, it should be strengthened to minimize casualties and property losses.In recent years, the reinforcement technology has developed rapidly at home and abroad, and the steel plate reinforcement has the advantages of short hardening time, small space, simple technology, easy construction, firm bonding, balanced force and obvious reinforcement effect, etc.By the majority of scientific research and construction personnel favor.Several common methods of strengthening concrete structures are introduced in detail.Through the design of a two-story kindergarten frame structure designed in 2005, the basic assumption, calculation theory, calculation method, reinforcement scheme selection and reinforcement construction method of the reinforcement design are reappeared.Combined with the example of strengthening engineering, the model of reinforced concrete structure before and after strengthening with steel plate is established by using finite element analysis software SAP2000, and the static elastic-plastic analysis is carried out, and its seismic capacity is evaluated.A comparative analysis was made on it.Then the model is introduced into Perform-3D, and the dynamic elastic-plastic analysis is carried out in Perform-3D, and its seismic capacity is evaluated.Finally, the static elastoplastic analysis and the dynamic elastoplastic analysis are compared between the floor displacement and the floor displacement. The results of the dynamic elastoplastic analysis are larger than that of the static elastoplastic analysis.
【学位授予单位】：河北联合大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU352.11;TU375

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