【作者】 李懿；

【导师】 李铁英；

【作者基本信息】 太原理工大学 ， 结构工程， 2011， 硕士

【摘要】 近年来我国大跨度钢结构发展迅速,特别是北京奥运会的大型体育场馆的建设规模和技术水平都是十分先进的,是我国钢结构发展的里程碑。随着空间钢结构以其优美的建筑造型和良好的力学性能在大跨度结构中得到广泛应用,K型系列圆钢管相贯节点(诸如平面K型、空间KK型节点等)作为相贯节点的主要表现型式,大量地存在于结构之中。然而,现行国内外规范对于空间复杂节点尚无具体设计规定。对于重大工程中较为复杂的该类型节点,目前只能通过试验手段来确定其受力性能。对复杂相贯节点的科研工作的进展缓慢已经严重影响了工程设计工作的安全性和经济性。对建筑结构中常见的K型圆钢管相贯节点静力性能进行全面深入的研究,在此基础上建立可靠、实用、系统的K型系列圆管节点承载力设计方法,用以指导工程设计和实践,已成为目前亟待解决的课题。本文在评述国内外大量钢管相贯节点相关领域研究现状的基础上,以空间X+双KK型、空间双KK+系杆型、空间焊接X+双K型节点和空间铸钢X+双K型节点为研究对象,利用有限元软件ABAQUS对K型系列圆管节点静力性能进行了比较深入系统的研究。对每类节点,进行有限元模拟、参数分析,在严密的有限元计算和理论分析的基础上,根据研究结果,提出桁架结构复杂相贯节点的设计建议。通过本文的研究工作,得出了一些有益的结论,为以后有关规范的制定和进一步的研究工作提供了一些参考。更多还原

【Abstract】 There is a meteoric rise to the development of the large space structure in China recently, especially it is outstanding for the construction scale and the technological level of Beijing Olympic Stadium and Gymnasium, which is a milestone of steel structure development in China. Along with the widespread use of space steel structure in large space structure area, which has a fame of gracious architectural molding and great mechanical performance, K-type RHS joints made of circular steel tubes(such as plane K-type and space double K-type joint etc.) are presented in amounts of structures, which plays a main appearance of RHS joints. Otherwise, there are no concrete design rules of complex space joints in domestic and foreign codes. To such type of complex joints in significant projects, experimental method is the only plan for setting the bearing capacity. As a result of slow progress in the researching work of complex RHS joints, it is forming a crucial effect on safety and economics of engineering design. The paper presents a total and deep-going research on static performance of RHS joints made of K-type circular tubes, which is usual in building structures.Based on researches,the paper brings a reliable,practical and systematical bearing capacity design method of K-type joints made of circular tubes,and realize an instruction of engineering design and practice, and has been an crucial problem that is in a need of being solved.On the basis of review of researching situations of RHS joints made of steel tubes in homes and aboard,Space X-type plus double K-type joint, Space double K-type plus link-type joint, Space welding X-type plus double K-type joint and Space steel casting X-type plus double K-type joint are chose as study objects in the paper. With adopting infinite element software ABAQUS, the paper presents the deepen and systematical research on static performance of K-type joint made of circular tubes, and infinite element simulation and parameters analysis of varying joints are also proceeded, based on accurate infinite element calculation and theoretical analysis, according to research results, the paper gives the design suggestion that is of complex RHS joints of the truss structure. Through the research work of the paper, some pieces of helpful conclusions were brought to the upshot, which are provided some pieces of reference to formulation of codes and research works.更多还原