T型钢梁柱半刚性节点受力性能研究

发布时间：2018-01-20 19:23

本文关键词： T形连接件节点弯矩—转角曲线初始刚度　出处：《吉林建筑大学》2015年硕士论文　论文类型：学位论文

【摘要】：在钢结构建筑中,普遍将节点设计成完全刚接和理想铰接,但这与实际的节点受力状态是存在偏差的。事实情况是绝大多数的梁柱节点的连接都是介于这两种理想方式之间,被定义为半刚性连接。而在钢结构设计中,节点的设计又是保证结构体系安全可靠的关键,因此对节点位置的复杂应力、受力状态、破坏形式等是设计的重要控制环节。1994年发生在美国加州的Northridge地震(里氏6.7级)和1995年发生在日本阪神的地震(里氏7.2级),将当时被公认采用最可靠的全焊型连接方式的钢结构几乎全部毁坏。破坏集中在梁柱节点的焊缝位置,因此对传统的设计理念提出了很大的挑战。在此之后,各国专家都试图找寻更加可靠的连接方式,在几乎不降低承载力的同时,避免节点位置的脆性破坏,提高节点的延性性能。在这种大环境下,梁柱节点的半刚性连接更为重要。本文针对半刚性连接中的典型连接方式—T型钢连接采用理论分析和试验研究相结合的方法做进一步的研究。并且使用大型通用有限元分析软件ABAQUS补充分析,对试验中难以直接测量到的位置,数据进行细致分析。进一步完善试验中的不足。通过对试验结果分析和试验数据的处理,最终得出此连接形式的破坏状态,节点承载力的控制要素,弯矩-转角曲线,螺栓撬力等一系列数据,进一步完善T型钢连接的设计理论,以促进这一连接形式在工程实际中的更广泛应用。
[Abstract]:In steel structure buildings, the joints are generally designed to be completely rigid and perfectly hinged. However, there is a deviation from the actual stress state of the joints. The fact is that most of the connections of Liang Zhu joints are between these two ideal ways, which are defined as semi-rigid connections, and in the design of steel structures. The design of the joint is the key to ensure the safety and reliability of the structure system. The Northridge earthquake (magnitude 6.7 on the Richter scale) occurred in California on 1994 and the earthquake in Hanshin, Japan on 1995. Richter 7.2). The steel structure which was recognized as the most reliable all-welded joint at that time was almost completely destroyed. The damage was concentrated in the weld position of Liang Zhu joint, so it posed a great challenge to the traditional design concept. Experts from all over the world are trying to find a more reliable connection way to avoid the brittle failure of joint position and improve the ductility performance of joints without reducing the bearing capacity at the same time. The semi-rigid connection of Liang Zhu joint is more important. In this paper, the theoretical analysis and experimental study are used to further study the typical connection mode -T section steel connection in semi-rigid connection. The finite element analysis software ABAQUS was used to supplement the analysis. Through the analysis of the test results and the processing of the test data, the failure state of this connection form is finally obtained through the analysis of the test results and the processing of the test data, which are difficult to measure directly and the data are analyzed carefully and the deficiencies in the test are further improved. A series of data, such as the control factors of joint bearing capacity, moment-corner curve, bolt prying force and so on, further improve the design theory of T-section steel connection, so as to promote the more extensive application of this connection form in engineering practice.
【学位授予单位】：吉林建筑大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU391

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