中高层生态复合墙混合结构多道抗震防线的研究

发布时间：2018-01-11 22:24

本文关键词：中高层生态复合墙混合结构多道抗震防线的研究　出处：《西安建筑科技大学》2014年硕士论文　论文类型：学位论文

【摘要】：中高层生态复合墙混合结构体系是一种生态环保、节能节地、耗能减震、能够快速建造的新型建筑结构体系。它将传统生态复合墙结构与混凝土竖向约束构件有机结合，相互取长补短、各汲优点，主要由预制的生态复合墙板、混凝土竖向约束构件、暗梁及楼板装配现浇而成。结构独特的构造特点，多种构件、材料的嵌套使用，使得该结构体系包含双重主次结构，具有多道抗震防线。本文在试验研究的基础上，利用数值软件对各道防线的影响因素进行分析，并对中高层生态复合墙混合结构的多道防线抗震机理进行探讨，以期为后期工程应用提供理论支持。本文的主要研究内容如下： 1．结合课题组中高层生态复合墙混合结构三道防线的相关试验研究，分为内填材料力学性能试验（防线1）、墙板框格单元试验（防线1+2）和带边框墙体试验（防线1+2+3）三类。通过对试验的分类研究对比，得到不同尺度空间、各抗震防线的受力特点及破坏规律。研究表明：内填砌块具有很好的耗能能力，竖向约束构件和暗梁形成外框架，能够约束生态复合墙板。在水平荷载作用下，砌块、框格、竖向约束构件相互作用，共同受力，能够在试验的弹性阶段、弹塑性阶段和破坏阶段依次发挥作用，使中高层生态复合墙体具有多道抗震防线——即“砌块—框格—竖向约束构件”。 2．结合试验研究结果，利用非线性有限元软件ABAQUS建立中高层生态复合墙体模型对不同防线影响因素下的生态复合墙体进行对比扩展分析。分别研究：第1道防线不同内填砌块对其的影响；第2道抗震防线中肋梁尺寸、肋柱尺寸、肋梁配筋、肋柱配筋对其的影响；第3道防线中竖向约束构件配筋对其的影响。通过数值分析，得到：砌块、框格结构及竖向约束构件相对强度、相对刚度的匹配有效的实现了三道抗震设防。 3．在上述研究成果的基础上，运用双重结构相关原理对中高层生态复合墙混合结构中包含的双重主次结构进行分析，得到了中高层生态复合墙混合结构的分解机理，，并将分灾结构原理运用到中高层生态复合墙混合结构中，得到了以砌块、复合墙板为分灾元件的中高层生态复合墙混合结构分灾设计思路。最后通过将结构的性能水准与三道抗震防线结合，给出中高层生态复合墙混合结构不同性能目标的三个性能水准所对应的设计指标建议值，并通过算例验证，说明基于中高层生态复合墙混合结构特有的三道防线的抗震设计能较好的满足对建筑结构性能目标设计的个性化要求。
[Abstract]:The mixed structure system of ecological composite wall is a kind of ecological environmental protection, energy saving and ground saving, energy dissipation and earthquake absorption. It combines the traditional ecological composite wall structure and the concrete vertical restrained member organically, draws on each other's weakness, each takes advantage, mainly by the prefabricated ecological compound wall board. Concrete vertical restrained member, dark beam and floor are assembled and cast-in-place. The unique structural characteristics, the nested use of various members and materials, make the structure system contain double primary and secondary structure. Based on the experimental research, this paper analyzes the influencing factors of each defense line by using numerical software, and discusses the seismic mechanism of multi-defense line of the mixed structure of the ecological composite wall in the middle and high buildings. The main contents of this paper are as follows: 1. According to the related experimental research of three lines of defence of the ecological composite wall mixed structure in the middle and high buildings of the research group, it can be divided into the mechanical performance test of the inner filling material (line of defense 1). There are three types of wall panel and frame element test (line of defense 12) and wall test with border frame (line of defense 1 23). Through the classification and comparison of the tests, different scale spaces are obtained. The research shows that the inner filling block has a good energy dissipation capacity, and the vertical restrained members and the dark beam form an outer frame, which can restrain the ecological composite wallboard under horizontal load. Block, frame lattice, vertical constraint member interaction, the joint force, can be in the elastic stage of the test, elastic-plastic stage and failure stage in turn play a role. The ecological composite wall of middle and high buildings has multiple seismic lines, that is, "block-frame lattice-vertical restrained member". 2. Combining the experimental results. By using the nonlinear finite element software ABAQUS to establish the model of ecological composite wall in middle and high buildings, the comparison and expansion analysis of the ecological composite wall under different defence factors are carried out. The influence of different filling blocks on the first line of defense; The size of the rib beam, the size of the rib column, the reinforcement of the rib beam and the influence of the reinforcement of the rib column on the second seismic defense line; In the third line of defense, the influence of the reinforcement of the vertical restrained members on it is obtained. Through numerical analysis, the following conclusions are obtained:. The matching of relative strength and relative stiffness of block, frame lattice structure and vertical restrained member realizes three seismic fortification effectively. 3. On the basis of the above research results, the double primary and secondary structures contained in the ecological composite wall hybrid structure are analyzed by using the principle of dual structure correlation. The decomposition mechanism of the middle and high building ecological composite wall hybrid structure is obtained, and the disaster separation structure principle is applied to the middle and high building ecological composite wall hybrid structure, and the block is obtained. The composite wall panel is the disaster dividing element of the middle and high building ecological composite wall hybrid structure. Finally, the performance level of the structure is combined with the three seismic defense lines. Three performance levels corresponding to the different performance targets of the ecological composite wall hybrid structures of the middle and high buildings are given and the corresponding design index suggestions are given and verified by a numerical example. The results show that the seismic design based on the three lines of defense which is unique to the middle and high building ecological composite wall composite structure can better meet the individualized requirements for the performance objective design of the building structure.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU398

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