新型六杆四面体柱面网壳的构形、静力和稳定性分析

发布时间：2018-04-02 21:48

本文选题：六杆四面体柱面网壳　切入点：半刚接半铰接柱面网壳　出处：《浙江大学学报(工学版)》2017年03期

【摘要】：提出一种新型的由投影平面为四边形的六杆四面体单元组成的柱面网壳(简称六杆四面体柱面网壳).这种网壳结构的构形的构造简单,节点和杆件数相对较少,网格抽空率高,具有单层和双层网壳的主要优点.对于上、下弦杆为梁元,腹杆为杆元,可称为上、下弦节点均为半刚接半铰接的六杆四面体柱面网壳,进行静力和线性与非线性稳定性分析.结果表明:其结构的整体刚度好,内力分布合理,线性特征值屈曲分析和考虑几何缺陷的双非线性稳定性分析都能获得较好的性能,结构的技术经济指标和用钢指标良好.柱面网壳可采用统一几何轴线尺寸的六杆四面体单元体集成,有利于标准化设计、工业化生产和装配化施工,符合绿色结构建筑推广应用的要求.
[Abstract]:A new type of cylindrical latticed shell consisting of a six-bar tetrahedron element with a projected plane of quadrilateral is proposed.The structure of the reticulated shell is simple, the number of nodes and bars is relatively small, and the grid pumping rate is high, which has the main advantages of single-layer and double-layer latticed shells.For upper, lower chord is beam element and web member is rod element, which can be called upper. The lower chord nodes are all half-rigid and half-hinged six-bar tetrahedron cylindrical reticulated shells. Static, linear and nonlinear stability analysis are carried out.The results show that the overall stiffness of the structure is good, the distribution of internal force is reasonable, the buckling analysis of linear eigenvalue and the double nonlinear stability analysis considering geometric defects can obtain better performance, and the technical and economic indexes and steel use indexes of the structure are good.The cylindrical latticed shell can be integrated with six-bar tetrahedron unit with uniform geometric axis size, which is advantageous to standardized design, industrial production and assembly construction, and meets the requirements of the popularization and application of green structure building.
【作者单位】：浙江大学空间结构研究中心;浙江东南网架集团有限公司;中国美术学院风景建筑设计研究院;布伦瑞克工业大学;
【基金】：国家自然科学基金资助项目(51478420)
【分类号】：TU399

【相似文献】