| 铝合金半刚性椭圆抛物面网壳静力稳定性分析 |
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| 引用本文： | 马会环, 余凌伟, 王伟, 范峰. 铝合金半刚性椭圆抛物面网壳静力稳定性分析[J]. 工程力学, 2017, 34(11): 158-166. DOI: 10.6052/j.issn.1000-4750.2016.07.0535 |
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| 作者姓名： | 马会环 余凌伟 王伟 范峰 |
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| 作者单位： | 1.哈尔滨工业大学土木工程学院, 建筑消防工程技术公安部重点实验室, 哈尔滨 150090;;2.中国建筑西南设计研究院有限公司, 四川, 成都 610000;;3.哈尔滨工业大学土木工程学院, 哈尔滨 150090 |
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| 基金项目： | 国家自然科学基金青年基金项目（51308135）；中国杰出青年科学基金项目（51525802）；中国博士后基金项目（2013M531020，2012T70346） |
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| 摘 要： | 针对目前铝合金单层网壳结构中节点形式过于单一的局面，该文首先研发出了一种新型铝合金半刚性节点--柱板式节点。获得了柱板式节点绕强轴、弱轴和扭转三个方向的弯矩-转角曲线，并将其引入到网壳杆件单元模型中，建立了半刚性节点工字型杆件椭圆抛物面网壳的数值分析模型。在此基础上，考虑节点强轴刚度、节点弱轴刚度、节点扭转刚度及跨度和矢跨比等参数影响，对半刚性节点高强铝合金椭圆抛物面单层网壳进行了弹塑性全过程分析，得到了各参数对网壳极限承载力的影响规律，并详细地考察了网壳失稳时的变形形态。研究发现：网壳失稳时，网壳中的柱板式节点均处于弹性状态，说明柱板式节点有较好的刚度，网壳的失稳为伴随杆件扭转屈曲的局部失稳。
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| 关 键 词： | 铝合金单层网壳 柱板式节点 节点刚度 椭圆抛物面网壳 静力稳定性分析 |
| 收稿时间： | 2016-07-15 |
| 修稿时间： | 2017-08-12 |
STATIC STABILITY OF ALUMINIUM SINGLE-LAYER ELLIPTICAL PARABOLIC LATTICED SHELL WITH SEMI-RIGID JOINTS |
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| MA Hui-huan, YU Ling-wei, WANG Wei, FAN Feng. STATIC STABILITY OF ALUMINIUM SINGLE-LAYER ELLIPTICAL PARABOLIC LATTICED SHELL WITH SEMI-RIGID JOINTS[J]. Engineering Mechanics, 2017, 34(11): 158-166. DOI: 10.6052/j.issn.1000-4750.2016.07.0535 |
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| Authors: | MA Hui-huan YU Ling-wei WANG Wei FAN Feng |
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| Affiliation: | 1.Department of Civil Engineering, Harbin Institute of Technology, Key Laboratory of Ministry of Public Security, Harbin 150090, China;;2.China Southwest Architectural Design and Research Institute Corp., LTD, Chengdu, Sichuan 610000, China;;3.Department of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China |
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| Abstract: | The joint type used in an aluminum single-layer latticed shell is limited. Therefore, a new type of aluminum joint called Column Plate Joint was developed for single layer latticed shells. The moment-rotation curves about three axes were obtained with ABAQUS. By integrating the moment-rotation curves into the numerical model of reticulated domes with I-shaped bars, the finite element models of aluminum single-layer elliptical parabolic latticed shells with semi-rigid joints were established with ANSYS. The research is carried out on the mechanical behavior of the shells based on different parameters, including the joint bending stiffness, joint torsional rigidity, and the ratio of rise to span. The critical load and the deformation of the structures were investigated in detail. The analytical results show that: i) the Column Plate Joint has good stiffness; ii) all of the Column Plate Joints in the shells are in an elastic state when the shells failed; iii) the aluminum single-layer elliptical paraboloid latticed shells failed because of the local torsional buckling of the members. |
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| Keywords: | aluminum single layer latticed shells column plate joint joint stiffness single-layer elliptical paraboloid latticed shells static mechanical behavior |
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