装配式框架梁柱隐伏角钢节点有限元分析

Zhe Li, Wei Yuan, Xingyu Chen, Shuai Zhang
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引用次数: 0

摘要

装配式建筑是国家大力发展的一种结构形式,是建筑业可持续发展的必然路径。为了提高预制混凝土框架结构的抗震性能,预制框架梁、柱采用隐藏式钢角连接。在对连接节点受力性能进行试验研究的基础上,利用ABAQUS软件建立连接节点有限元模型,分析设计参数对试件受力性能的影响。分析表明,将混凝土等级由C25提高到C55,可使正承载力提高12.3%。试件的耗能能力和刚度均有提高。增加钢板厚度可以提高试件的承载力、刚度和耗能能力。角钢厚度由4 mm增加到10 mm,负承载力提高27.78%,从而提高了试件的耗能能力。将锚杆直径从16 mm增加到24 mm,正承载力提高8.2%,负承载力提高10.9%。试件的耗能能力和刚度也相应提高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Finite element analysis of concealed angle steel node in prefabricated frame beams and columns
Prefabricated construction is a structural form vigorously developed by the country and is the inevitable path for the sustainable development of the construction industry. In order to enhance the seismic performance of prefabricated concrete frame structures, concealed steel angle connections for prefabricated frame beams and columns are employed. Based on experimental research on the force performance of these connection nodes, a finite element model of the connection node is established using ABAQUS software to analyze the influence of design parameters on the force performance of the specimen. The analysis indicates that upgrading the concrete grade from C25 to C55 increases the positive bearing capacity by 12.3 %. The specimen’s energy dissipation capacity and stiffness are both improved. Increasing the thickness of the steel cover plate can enhance the specimen's bearing capacity, stiffness, and energy dissipation capacity. Increasing the angle steel thickness from 4 mm to 10 mm results in a 27.78 % increase in negative bearing capacity, consequently enhancing the specimen’s energy dissipation capacity. By increasing the bolt diameter from 16 mm to 24 mm, the positive bearing capacity increases by 8.2 %, and the negative bearing capacity increases by 10.9 %. The energy dissipation capacity and stiffness of the specimen also improve accordingly.
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