【作者】 邢海东；

【导师】 郝际平； 徐国彬；

【作者基本信息】 西安建筑科技大学 ， 结构工程， 2011， 博士

【摘要】 索托结构是一种由斜拉结构发展而来的一种新颖结构形式,它发扬了斜拉结构的优点克服了斜拉结构的不足,适用于大跨度、大空间的建筑结构。索托结构由于采用连续拉索对屋盖结构产生向上的“升力”,索效率大大提高,柱高降低很多,故可节省材料用量和工程造价,其跨越空间的能力优于斜拉结构,且施工方便。本文通过对这种新型结构体系的研究,深入系统地揭示其受力特性和施工特性,并通过工程实践验证理论的正确性,同时为该结构的继续开发、应用积累宝贵经验。本文首先总结了索结构的发展历史,及其需要解决的问题,由此引出索托结构的产生,同时指出了索托结构的特征、工作机理、现存问题及发展前景。其次,介绍了非线性有限元理论,比较分析基于全量的几何非线性理论与基于增量的几何非线性理论;总结了非线性方程组的求解方法。根据索托结构计算理论,以悬链线理论为基础,推导了适用于索托结构分析的悬链线索单元,推导了改进的非线性方程组解法――不完全的牛顿—拉普森迭代法,提出了索托结构“托点”滑移算法,编制了索托结构非线性有限元分析程序。介绍了程序流程、收敛方法及编程技术;并与经典理论算例比较验证其准确性。再次,使用编制的程序对索托结构与斜拉结构进行了对比分析,研究了均布荷载作用下索夹角对索力、变形性能和结构内力的影响,验证了索托结构体系的优越性。并针对索托结构进行了多参数分析,考虑了索托点位置、节间距、预应力等各种情况,得出了一些结论,对索托结构的优化与设计给出了指导意见。最后,本人参与了曲棍球馆工程的设计、施工全过程。工程实践中全面阐述了曲棍球馆工程概况,内力分析、构件设计、节点设计、经济性分析、施工方案与施工全过程分析、施工控制与监测。该工程的成功实施,验证了索托结构理论分析的结果,并对后期推广提供了宝贵的经验。更多还原

【Abstract】 Cable-supported structure is a novel structure developed from cable-stayed structure. Cable-supported structure gives full play to the advantages of cable-stayed structure and overcomes its shortcomings, applicable for structures with large span and space. Due to the“lifting force”produced by the continuous cable on the roof structure, the efficiency of the cable is greatly promoted and the column height is reduced, therefore, resulting in less material usage and lower engineering budget. The cable-supported structure is capable of larger span than the cable-stayed and easier to be constructed. Through a study on this type of new structure, its mechanism, design guidelines and characteristics in construction are revealed in depth, and the theory is validated by engineering practice; in the meanwhile, valuable experiences are gathered for the development and application of this structure.Firstly, a developing history of cable structure and problems to be solved are summarized in this dissertation, based on which the birth of cable-supported structure is introduced. In the meanwhile, the characteristics, mechanism and prospect of cable-supported structure are pointed out.Secondly, non-linear finite element theory is introduced and comparisons are made between geometric non-linear theories based on whole quantity and increment and solving methods of non-linear simultaneous equations are summarized. Based on calculation theory of cable-supported structure and catenary theory, catenary cable element suitable for cable-supported analysis is derived, a modified solving method for non-linear simultaneous equations—modified Newton-Raphson iteration method is proposed and non-linear finite element analysis program for cable-supported structure is prepared. The flow chart, convergence criterion and programming technology are introduced and the accuracy of the program is verified by classic examples.Thirdly, the program is used to analyze and compare cable-supported and cable-stayed structures. The deformation and internal forces are studied under full and half-span uniformly distributed loads and the superiority of the cable-supported is proven. Multi-parametric analysis is carried out on cable-supported structure, considering location of support, node interval and pre-stress, etc. and a few conclusions are drawn and suggestions are given on the design of cable-supported structure.Finally, the author participated in the whole design-construction process of a hockey gymnasium. In this engineering practice, project summary, internal force analysis, member design, node design, economic analysis, simulation analysis on construction scheme and whole-process construction and construction control and monitoring are elaborated. The success of this project verifies the theoretical analysis of cable-supported structure and provides valuable experiences for future promotion.更多还原