新型墻板裝配式鋼結(jié)構(gòu)住宅體系及其關(guān)鍵技術(shù)的研究
[Abstract]:In recent years, China has been promoting the urbanization construction, which provides a good opportunity for the realization of housing industrialization construction and the development of prefabricated steel structure housing. On the basis of drawing lessons from the advantages of the existing prefabricated steel structure housing system at home and abroad, this paper presents a new type of wall slab fabricated steel structure housing system suitable for multi-storey residential buildings. The system is composed of combined force wall panel, non-force wall board and integrated floor slab. It has the advantages of standardized production of components, high integration degree, no welding operation on the spot, high construction quality and good comprehensive economic benefit, and so on. In this paper, the structure form, maintenance material, joint construction, seismic performance and so on of the new type of wall panel fabricated steel structure housing system and its key technology are studied. The specific work and conclusions are as follows: 1) through the design of a set of multi-storey housing, from the structural layout, prefabricated parts form, construction node processing, structural performance and economic indicators and other macro aspects, This paper briefly introduces the composition of the new type of wall panel assembled steel structure housing system and the characteristics of the supporting technology. 2) the static force push analysis and elastic-plastic cyclic load analysis of a single fabricated steel frame are carried out by using the finite element software ABAQUS,. The load-displacement curve and the distribution of stress and strain of the structure are obtained. The results show that under the design load, the structure is in an elastic state and has sufficient safety reserve. Under the limit load, the plastic hinge of the structure first appears at the end of the support and at the chord of the main beam, which basically meets the requirements of "strong column and weak beam," The design requirement of strong joints and weak members is that the lateral stiffness of the structure is large and the lateral displacement is small in the elastic deformation stage, but the bearing capacity decreases rapidly after entering the plastic stage. The aspect ratio of braces and the ratio of width to thickness of bottom columns should be strictly controlled in design to avoid structural failure due to excessive local stress or local buckling deformation of members. To ensure the later bearing capacity and ductility of the structure. 3) the inserted Liang Zhu connection is studied for the construction of the site assembly of the structure and is one of the key technologies of the new type of wall panel assembled steel structure housing system. It not only connects the upper and lower columns, but also connects the beams and columns, thus disconnecting the building layers, thus avoiding the problems of high transportation difficulty and low transportation efficiency caused by the excessive size of prefabricated parts. In this paper, the ABAQUS finite element analysis software is used to analyze the bearing capacity, stress distribution and bending stiffness of the plug-in connection joints. The results show that the joint can transfer the axial force of the column reliably and meet the design requirements of the "strong joint and weak member", and the joint belongs to the semi-rigid joint, and the axial force and shear force of the transfer column can also bear the bending moment. It can be used as the second seismic fortification measures other than braces. The research results of this paper play an important role in promoting the development of the new type of wall panel assembly steel structure housing system, and lay a technical foundation for the application and development of the structure system.
【學(xué)位授予單位】:西安建筑科技大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2014
【分類號(hào)】:TU391
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