预应力拱支网壳的理论分析与研究

【作者】 金玉；

【导师】 黄勇；

【作者基本信息】 贵州大学 ， 结构工程， 2007， 硕士

【摘要】 空间网壳结构的形式很多。在工程应用中结合工程的具体条件选择适当的网壳形式，是结构设计的关键所在。这是因为网壳形式直接影响着空间结构的技术指标、制做安装质量以及施工进度等。对于大跨度的空间结构而言这点尤其突出。本课题综合了网壳和桁架拱的力学和构造特点，通过对桁架拱配置拉索并施加预应力，得到一种新型空间杂交结构形式——预应力拱支网壳结构，它可以看作是拱支网壳结构的一种特殊结构形式。这种结构不仅具有网壳的优点，同时又能克服预应力桁架拱的许多不足之处。本课题对这种新型空间杂交结构进行了深入的理论分析，介绍了预应力拱支网壳结构的有限元计算与分析方法，并利用有限元软件ANSYS对于预应力拱支网壳结构进行了稳定性分析，并完成了理论的分析、归纳、总结，并以大量的插图、表格直观地表现预应力拱支网壳结构的内力特征以及一些静动力学性能。理论分析表明，该杂交结构能充分发挥两种结构形式的受力特点，整体受力性得到明显改善，具有优良的抗震性能，显示出该新型杂交结构体系具有一定的应用前景。更多还原

【Abstract】 There are lots of forms in space reticulated shell structure. Reticulated Shell forms are properly chosen according to idiographic conditions of projects in the engineering applied,which is the key of structure designing. This is because many aspects,such as space structure technically targets,doing and fitting qulitly,and building plan, etc. are affected by shell forms.To large span space structure this is very important.This dissertation combination with mechanical behaviors and structure feature of Reticulated Shell Structure and Frame Arch Structure. Through dispose dragline and prestressed in FrameArch Structure ,we developed a new type space hybridize structure------PrestressedArch-supported Reticulated Shell Structures.It is a special kind of structure of Arch-supported Reticulated Shell Structures. The structure not only holds the advantages of Reticulated Shell Structure but also remedies disadvantages of Prestressed Frame Arch.In-depth theorical analysis and proof trail have been made to the new hybridize structure in this research program. At the same time ,the definite element calculating and analysis method is introduced. At the same time, we achieved stability analysis of the model in ANSYS. Represented the statics force character and other character between Prestressed Arch-supported Reticulated Shell Structures,we summarized the date with a great deal of iconograph and table.As theorical analysis above, this new hybridize structure behaves much better combined with Reticulated Shell Structures and Prestressed Frame Arch. It has better capability of holistic load and better seismic fortification. Because of these advantages, the new hybridize structure should be worth applying to large span structures.更多还原