装配式隔震节点的试验研究与分析

发布时间：2018-01-19 14:21

本文关键词： 装配式节点低周反复抗震性能　出处：《广州大学》2013年硕士论文　论文类型：学位论文

【摘要】：装配式混凝土结构具有节约材料、降低能耗、有利于环境保护、提高建筑质量、缩短施工周期、提高劳动生产率和综合经济效益、促进建筑产业化等显著优点。另一方面,工程隔震减震技术是半个世纪以来地震工程与结构工程领域最具创新性的研究成果之一，它突破了传统消极“硬抗”式的被动式抗震设计方法，是一种主动的“以柔克刚”式的结构设计新对策。在现代装配式工业化建筑中应用先进的隔震减震技术，不仅适应了我国住宅商品化程度日益增长的要求，也满足了业主对住宅产品抗震安全性不断提高的需要，代表了我国在未来住宅建设发展上的重要方向，具有重要的历史意义和广阔的市场前景。本文提出了一种适用于装配式钢筋混凝土隔震结构的新型装配式隔震梁柱节点，该节点在罕遇地震的作用下，仍具备一定的强度和稳定性，从而保证了隔震层的安全。本文在国内外研究的基础上，针对装配式混凝土梁柱节点及其抗震性能开展了试验和理论研究，内容概括如下： 1、装配式节点的设计。本文设计了两种装配式方案，制作4个半尺试件，即3个装配式试件和1个现浇对比试件，介绍了试件的设计和制作过程，并对试验过程和试验现象进行了详细的描述和初步分析。 2、装配式节点的抗震性能研究。在对上述试件进行低周反复加载试验的基础上，对新型装配式梁柱节点进行了抗震性能研究，分析其开裂破坏形态、滞回特性、骨架曲线、刚度退化、延性性能、耗能能力、钢筋应变、混凝土应变等抗震性能。综合分析结果表明，通过合理的连接，装配式钢筋混凝土节点具有良好的抗震性能。 3、理论分析与试验对比。应用ABAQUS有限元软件对MCB节点的骨架曲线进行了模拟，并用OpenSees程序对MCB节点的滞回曲线进行了模拟，模拟结果均与试验结果基本吻合。ABAQUS模拟节点的破坏部位和形式与试验结果基本一致，验证了模型的合理性与准确性。ABAQUS的数值模拟结果，为结构试验提供了加载依据。文中研究的新型装配式隔震梁柱节点具有优良的抗震性能，能够满足抗震设计要求。这种结构可以广泛的用于我国抗震地区，，有广阔的应用前景。
[Abstract]:The prefabricated concrete structure has the advantages of saving materials, reducing energy consumption, improving environmental protection, improving construction quality, shortening construction period, increasing labor productivity and comprehensive economic benefits. On the other hand, engineering isolation and damping technology is one of the most innovative research achievements in the field of seismic engineering and structural engineering in the past half century. It breaks through the traditional passive "hard resistance" passive seismic design method, and is a new active "flexible and rigid" structural design strategy, which applies advanced isolation and shock absorption technology in modern prefabricated industrial buildings. It not only meets the requirements of the increasing degree of commercialization of housing in China, but also meets the needs of the owners for the continuous improvement of anti-seismic safety of residential products. It represents the important direction of the development of housing construction in the future in our country. Has the important historical significance and the broad market prospect. In this paper, a new type of assembled isolated Liang Zhu node is proposed, which is suitable for assembly reinforced concrete isolated structure. The node still has a certain strength and stability under the action of rare earthquake. Based on the research at home and abroad, this paper has carried out the experimental and theoretical research on the assembled concrete Liang Zhu joint and its seismic performance. The contents are summarized as follows: 1. The design of assembly node. In this paper, two kinds of assembly schemes are designed. Four half-foot test pieces are made, that is, 3 assembly specimens and 1 cast-in-place contrast specimen. The design and manufacture process of the specimen are introduced. The experimental process and experimental phenomena are described and analyzed in detail. 2. The seismic behavior of assembled joints is studied. Based on the low-cycle repeated loading tests, the aseismic behavior of the new assembled Liang Zhu joints is studied, and the cracking and failure patterns of the joints are analyzed. Hysteretic properties, skeleton curves, stiffness degradation, ductility, energy dissipation capacity, reinforcement strain, concrete strain, etc. The prefabricated reinforced concrete joints have good seismic performance. 3. The ABAQUS finite element software is used to simulate the skeleton curve of MCB joints. The hysteretic curve of MCB node is simulated by OpenSees program. The results of simulation are in good agreement with the test results. The damage position and form of Abaqus simulation nodes are basically consistent with the test results. The rationality and accuracy of the model are verified. The numerical simulation results of Abaqus provide the loading basis for the structural test. The new fabricated Liang Zhu joints studied in this paper have excellent seismic performance and can meet the requirements of seismic design. This kind of structure can be widely used in earthquake resistant areas of China and has a broad application prospect.
【学位授予单位】：广州大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU352.12

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