装配整体式混凝土结构钢筋连接技术研究

发布时间：2018-04-15 00:20

本文选题：装配整体式 + 钢筋连接　；参考：《长安大学》2015年硕士论文

【摘要】：近年来随着国内房地产业的迅猛发展以及住宅产业化日益受到高度重视,装配整体式结构因其工业化程度高、建造速度快、建筑整体性能好、建筑产品质量高、有利于环境保护、社会效益高等方面的优点,在国内得到了迅速推广和使用。该结构形式可以有效解决传统现浇方式作业中的不足,是我国建筑行业发展的趋势。随着预制建筑在国内的再次兴起,国内一些建筑研究所以及建筑企业开展了研发技术体系、改进制造工艺、提升构件产品质量等方面研究工作。而装配整体式结构钢筋之间的连接是保证钢筋间传力以及结构整体性能的关键,而采用不同的连接形式直接影响到工程的总造价以及项目工期。国内现有规程中关于钢筋连接的规定偏于从总体上进行概括要求,对于钢筋连接缺乏具体可操作性,钢筋连接形式对结构安全影响研究不足。本文详细介绍了预制混凝土结构的发展历史以及各个国家开展并推广预制混凝土结构的情况。总结国内常用的钢筋连接技术如:搭接、焊接、机械连接,结合每种连接形式工艺特点,开展每种钢筋连接形式在装配整体式结构中的适用性论证以及应用方式推荐。重点总结了装配整体式结构特有的套筒灌浆连接以及约束浆锚连接试验研究,对连接机理和破坏形态进行分析,指出现有研究未涉及到的研究内容并提出研究建议。对约束浆锚式连接提出合理化的改进建议,简化连接方式。对我国各地方标准中所涉及的连接方式进行汇总,通过实际算例指出约束浆锚式连接在实际设计使用时缺乏统一的设计标准,连接设计缺乏可操作性等一系列问题。最后本文对国内现有的装配整体式结构体系以及各建筑企业采用的典型钢筋连接技术进行总结。结合每种钢筋连接技术的适用范围以及优缺点,针对西安地区8度抗震设防烈度推广装配式混凝土结构,推荐合理的结构形式及钢筋连接方式,加快西安地区建筑产业结构转型升级,实现建筑产业化及可持续发展战略。
[Abstract]:In recent years, with the rapid development of the real estate industry in China and the increasing attention to housing industrialization, the assembly integral structure is of high industrialization, fast construction, good overall performance and high quality of building products.In favor of environmental protection, high social benefits and other advantages, has been rapidly promoted and used in China.This structure can effectively solve the shortcomings of the traditional cast-in-place operation and is the development trend of the construction industry in China.With the re-emergence of prefabricated buildings in China, some building research institutes and construction enterprises have carried out research work on R & D technology system, improving manufacturing technology, improving the quality of component products and so on.The connection between the assembled integral structural steel bars is the key to ensure the transmission force between the steel bars and the overall performance of the structure, and the use of different forms of connection directly affects the total cost of the project and the duration of the project.The provisions of the existing regulations on the connection of steel bars in China tend to generalize the requirements on the whole, and lack of specific operability for the connection of steel bars, and lack of research on the influence of the form of steel connections on the safety of structures.In this paper, the history of precast concrete structure and the situation of developing and popularizing precast concrete structure in various countries are introduced in detail.This paper summarizes the common techniques of steel bar connection in China, such as: lap joint, welding, mechanical connection, combining with the technological characteristics of each kind of connection form, and carries out the applicability demonstration of each kind of steel bar connection form in the assembly integral structure and the recommendation of the application way.In this paper, the special sleeve grouting connection and confined grouting connection test of assembling integral structure are summarized, the connection mechanism and failure pattern are analyzed, and the research contents that are not covered in the present research are pointed out and the research suggestions are put forward.Some reasonable suggestions are put forward to improve the tie-up anchor connection and simplify the connection mode.This paper summarizes the connection modes involved in the local standards of our country, and points out a series of problems such as the lack of unified design standard and the lack of operability of the connection design.Finally, this paper summarizes the existing assembly integral structure system and the typical steel bar connection technology adopted by various construction enterprises.According to the applicable range, advantages and disadvantages of each kind of steel bar connection technology, the reasonable structure form and the reinforcement connection mode are recommended to popularize the prefabricated concrete structure with 8 degree seismic fortification intensity in Xi'an area.Speed up the transformation and upgrading of the construction industry structure in Xi'an, realize the construction industrialization and sustainable development strategy.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU755.3

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