装配式剪力墙结构外墙板问题研究

发布时间：2018-02-21 19:43

本文关键词： 装配式结构预制外墙板静力弹塑性分析加固方案连接件　出处：《沈阳建筑大学》2013年硕士论文　论文类型：学位论文

【摘要】：节能、环保、可持续发展对建筑技术提出新的要求,提高住宅产业化、现代化水平是实现绿色建筑的重要途径。从住宅产业化发展经验来看,通过建筑体系标准化、技术应用集成化建造的住宅,既能满足人们对住房的需求,又能提高住宅的综合性能。更重要的是它符合可持续理念,是实现绿色建筑、绿色施工的重要途径。资料表明,住宅的预制率达37%时,可节约用水36%,垃圾减少83%,材料损耗减少60%,节约用电31%以上,节能50%以上。因此,提高工业住宅化和现代化已成为我国住宅发展的的必由之路,预制装配式混凝土结构已然成为未来建筑结构体系的发展方向。根据预制外墙板作为装配式混凝土结构的重要组成部分。本课题针对沈阳地铁·丽水新城装配式剪力墙结构预制外墙板出现的问题进行分析研究。首先,对预制墙板与内侧剪力墙之间由保温填充材料改为混凝土浇筑,致使预制墙板对整体结构的约束增强、刚度增大,导致结构自振周期需要折减。因此,采用PKPM中的SATWE计算自振周期折减系数。再利用MIDAS/Gen有限元软件对预制模板结构模型进行弹塑性静力分析,验证主体结构在多遇地震和罕遇地震下的抗震性能。针对预制外墙挂板作为预制混凝土模板(以下简称预制模板)进行使用,以及实际施工时,上下齿口完全脱离,齿口处采用水泥砂浆抹平,无法实现面外限位,造成外挂板面外受力方式完全改变,同时由于墙体现浇混凝土的侧向压力,使得外挂板在面外方向胀模,影响外挂板的结构安全。因此,利用MIDAS/Gen有限元软件对外墙模板在使用阶段和施工阶段进行受力分析,提出外墙板的补强方案。对装配式夹心保温外墙板而言,连接件是最重要的重要的部分之一。为进一步对预制外墙板的深入研究,本文针对以3600×3000(包含开窗1500×1800)预制夹心保温外墙板为基础,采用纤维筋作为连接件,利用ABAQUS建立计算模型对其进行有限元受力分析,验证不同形式的纤维筋连接件能够满足受力要求,并形成完整的技术方案,为新型连接件的应用提供技术支持。最后,总结了本文的研究成果,解决工程实际应用上的技术难题,进而为进一步推广预制装配式混凝土结构提供有价值的参考。
[Abstract]:Energy saving, environmental protection and sustainable development put forward new requirements for building technology, improve housing industrialization and modernization level is an important way to achieve green building. From the development experience of housing industrialization, through building system standardization, The integrated construction of technology can not only meet the needs of people for housing, but also improve the comprehensive performance of housing. More importantly, it conforms to the concept of sustainability and is an important way to realize green building and green construction. When the prefabrication rate of residence is 37, 36 water can be saved, garbage will be reduced by 833, material wastage will be reduced by 60, electricity will be saved by more than 31%, and energy conservation will be more than 50%. Therefore, to improve the industrialization and modernization of housing has become the only way for the development of housing in our country. Prefabricated concrete structure has become the development direction of building structure system in the future. According to the precast outer wall as an important part of the prefabricated concrete structure, this paper analyzes and studies the problems of the prefabricated exterior wall of the assembly shear wall structure of Shenyang Metro 路Lishui New City. For the precast wall board and the inside shear wall, the heat preservation filling material is changed into concrete pouring, which makes the precast wall board strengthen the constraint on the whole structure and increase the stiffness, which results in the reduction of the natural vibration cycle of the structure. The SATWE in PKPM is used to calculate the reduction coefficient of natural vibration period, and the MIDAS/Gen finite element software is used to analyze the elastoplastic static model of prefabricated formwork structure. To verify the seismic performance of the main structure under frequent and rare earthquakes. For the use of prefabricated external wall slabs as prefabricated concrete formwork (hereinafter referred to as prefabricated formwork), and in actual construction, the upper and lower teeth are completely separated from each other. Cement mortar is used to smooth the tooth mouth, which can not realize the out-of-plane limit, which results in a complete change in the external loading mode of the external hanging plate. At the same time, due to the lateral pressure of the cast-in-place concrete of the wall, the external hanging plate expands in the out-of-plane direction. The structural safety of the external wall panel is affected. Therefore, using MIDAS/Gen finite element software to analyze the stress of the external wall template in the stage of use and construction, the reinforcement scheme of the external wall board is put forward. Connection is one of the most important parts for fabricated sandwich insulation wall panels. In order to further study the prefabricated exterior wall panels, this paper is based on 3600 脳 3000 (including windowed 1500 脳 1800) prefabricated sandwich wall panels. Using fiber tendons as connectors, the finite element stress analysis is carried out by using ABAQUS calculation model to verify that different forms of fiber reinforced connectors can meet the stress requirements and form a complete technical scheme. Provide technical support for the application of new connectors. Finally, the paper summarizes the research results of this paper, solves the technical problems in practical application of engineering, and provides a valuable reference for the further popularization of prefabricated concrete structures.
【学位授予单位】：沈阳建筑大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU398.2

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