全预制装配式混凝土结构节点研究

发布时间：2018-08-31 11:30

【摘要】：住宅工业化,强调以大规模工业化生产方式制造住宅,以提高生产效率和整体质量,已成为目前国际住宅建筑行业发展的主流。预制装配式混凝土技术通过工厂预制、现场装配,可以缩短工期、降低成本、保证建筑物质量、节约能源与资源、减少建筑垃圾对于环境的不良影响,发展预制装配式结构体系是住宅工业化的必由之路。节点是整个预制装配式混凝土结构的关键,对整个结构体系有着至关重要的意义。目前国内的全预制装配式梁-柱、柱-柱、剪力墙连接节点还有许多方面有待改善,这就需要开发新的便于整体性连接的节点形式。论文利用钢结构的连接方式,对比了国内外各种干式连接的优点和不足,提出了新型全预制装配式混凝土结构柱-柱节点、梁-柱节点和剪力墙节点构造,定性分析了新型节点的特点和受力性能。对提出的几种新型柱-柱干式节点(法兰盘型钢连接、新型企口连接、榫式-法兰连接)和梁-柱干式节点(暗牛腿-法兰盘连接、榫式-法兰连接)进行整体受力分析,分别对新型柱-柱节点中重要的传力构件—预埋件、法兰板与高强螺栓、齿槽柱、缺口柱,新型梁-柱节点中的暗牛腿、缺口梁、榫头进行重点分析和研究,给出了相应设计验算公式,并建立了法兰盘型钢连接柱、榫式。法兰连接柱以及新型框架梁-柱节点的承载力计算公式。分别建立了柱。柱榫式-法兰连接、梁-柱榫式-法兰连接及同条件下现浇构件的ABAQUS有限元模型,计算结果与理论数值吻合较好。计算结果表明,新型连接构件的承载能力比同条件下的现浇构件有所提高,延性相当。螺栓个数、钢板厚度、混凝土强度、轴压比、柱齿高度对新型柱-柱节点承载力及变形的影响明显；螺栓个数、钢板厚度、榫头长度对新型梁-柱节点承载力及变形有明显影响。
[Abstract]:In order to improve the production efficiency and overall quality, housing industrialization has become the mainstream of the development of the international residential construction industry. Prefabricated concrete technology can shorten the construction period, reduce the cost, guarantee the quality of buildings, save energy and resources, and reduce the adverse impact of construction waste on the environment through factory prefabrication and on-site assembly. The development of prefabricated structure system is the only way of housing industrialization. The joint is the key of the prefabricated concrete structure, and it is very important to the whole structure system. At present, there are still many aspects to be improved in the prefabricated beam-column, column-column and shear wall connections in China, which requires the development of a new joint form which is convenient for integral connection. In this paper, the advantages and disadvantages of all kinds of dry connections at home and abroad are compared by using the connection mode of steel structure, and a new type of prefabricated concrete structure with column-column joints, beam-column joints and shear wall joints is proposed. The characteristics and mechanical properties of the new joints are analyzed qualitatively. The integral force analysis of several new column-column dry joints (flange steel connection, new groove connection, tenon flange connection) and beam-column dry joint (dark corbel flange connection, tenon flange connection) is carried out. The important force transfer components in the new-type column-column joints are analyzed and studied in detail, such as embedded components, flange plates and high-strength bolts, grooving columns, notched columns, dark corbel legs, notched beams and tenons in new-type beam-column joints. The corresponding design checking formula is given, and the flange steel connecting column and tenon type are established. Calculation formula of bearing capacity of flange connecting column and new frame beam-column joint. The columns were established respectively. The ABAQUS finite element model of dowel flange connection, beam-column tenon flange connection and cast-in-place member under the same condition is in good agreement with the theoretical value. The calculation results show that the bearing capacity of the new connection member is higher than that of the cast-in-place member under the same condition, and the ductility is equal. The number of bolts, the thickness of steel plate, the strength of concrete, the ratio of axial compression and the height of column teeth have obvious effects on the bearing capacity and deformation of new-type column-column joints, the number of bolts, the thickness of steel plate, the number of bolts, the thickness of steel plate, The tenon length has obvious influence on the bearing capacity and deformation of the new beam-column joint.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU37

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