【作者】 舒畅；

【导师】 王元清； 丁大益；

【作者基本信息】 清华大学 ， 建筑与土木工程， 2012， 硕士

【摘要】 采用单索支承体系的点支式玻璃幕墙，其轻盈、通透的特点可发挥到极致，此类支承体系取消了稳定索、横向索及钢索间的连接构造，最大程度降低用钢量，节约成本方便施工。虽然单索支承作为新兴的幕墙支承技术，已在国内外多个工程中得到应用，但其理论研究仍处于起步阶段。本文以实际工程为背景，运用有限元计算方法对此类玻璃幕墙进行了较为全面地研究，包括设计分析、承载性能影响因素分析、地震和风振作用下动力反应、张拉施工控制及对边界结构影响，本文主要完成了以下几个方面工作：(1)根据实际工程，建立四种有限元计算模型，通过计算模型中弹簧单元调整节点约束能力，分析玻璃面板对幕墙结构刚度的贡献作用，其中计算模型有考虑玻璃面板与支承结构、幕墙结构与主体结构的相互影响，通过计算结果的比较，分析计算模型的合理性。(2)对单索支承点支式玻璃幕墙进行静力承载性能的影响因素分析，包括索预应力、索直径、索跨度、玻璃尺寸和荷载大小。(3)根据工程实际情况，选择合理地震波并人工合成地震波，进行多遇地震时程分析，计算含幕墙结构的整体模型的地震响应，并与幕墙规范拟静力法和抗震规范反应谱法的计算结果进行比较分析；模拟脉动风压进行风振时程分析，并与幕墙规范拟静力法的计算结果进行比较。(4)采用有限元方法分析索支承结构张拉施工过程控制，对由于索支承预应力而产生最不利影响的边界结构局部构件进行稳定性屈曲分析。本文总结出适用于单索支承点支式玻璃幕墙工程设计的计算模型和计算方法，为同类工程设计提供参考，具有工程实用价值。更多还原

【Abstract】 Point supported glass curtain wall with single cable supporting system hasadvantages of high transparency and light weight, with this structure type, thestable cable, the horizontal cable, and the connection between the cablestructures are not required, the steel can therefore be greatly reduced, makingpossible a lower cost and a faster construction. As an emerging technology, thesingle cable supporting system for point supported glass curtain wall has beenapplied in number of projects, but its theoretical studies are still at the initialstage.The present thesis is based on a real project, a comprehensive numericalstudy, including design analysis, dynamic analysis under earthquake and wind,tension control of cable structure and its influence to boundary structure, isperformed for point supported glass curtain wall with single cable supportingsystem. The main contributions are summarized as follows:(1)Four different finite element models considering the influence betweenglass panel and supported structure, curtain wall structure and the main structureare created, and its studied by adjusting node constraint ability which isrepresented by spring element in the numerical model，the glass panel has acertain contribution to the stiffness of the glass curtain wall. The rationality ofthe models is discussed by comparing the numerical results predicted bydifferent models.(2)A parametric study is performed to investigate the static bearingperformance of the glass curtain wall with single cable supporting system.Different parameters are considered consisting of cable prestressing force, cablediameter, cable span length, glass size, and the load.(3)Suitable seismic waves are selected and a seismic analysis is performedafterwards for the real project. The dynamic response of the curtain wallstructure under the earthequake waves is predicted and compared with theresults predicted by the static method and seismic response spectrum methodwhich are given in the curtain wall code and seismic design code; A windinduced vibration time history analysis is performed and compared with the result given by the static method according to the curtain wall code.(4)The construction process control of the cable structure is analyzed usingthe finite element method. A stability buckling analysis considering the mostdisadvantageous local components of the boundary structure is performed.The suitable computation models and methods for point supported glasscurtain wall with single cable supporting system are suggested, which canbecome the reference to similar projects and has a high practical value for theengineering design.更多还原