泰姆科节点刚度对单层球面网壳稳定性能的影响  

Influence of Temcor Joint Stiffness on Stability of Single-Layer Spherical Reticulated Shells

作　　者：芦燕 彭冠楚[3] 张晓龙 LU Yan;PENG Guanchu;ZHANG Xiaolong(Key Laboratory of Earthquake Engineering Simulation and Seismic Resilience of China Earthquake Administration,Tianjin University,Tianjin 300350,China;Key Laboratory of Coast Civil Structure Safety of China Ministry of Education,Tianjin University,Tianjin 300350,China;School of Civil Engineering,Tianjin University,Tianjin 300350,China)

机构地区：[1]天津大学中国地震局地震工程综合模拟与城乡抗震韧性重点实验室,天津300350 [2]天津大学滨海土木工程结构与安全教育部重点实验室,天津300350 [3]天津大学建筑工程学院,天津300350

出　　处：《建筑钢结构进展》2023年第1期62-70,89,共10页Progress in Steel Building Structures

基　　金：国家自然科学基金(52022067、51778411)。

摘　　要：为研究泰姆科节点剪切刚度对铝合金单层球面网壳稳定承载力的影响,建立了单层球面网壳多尺度分析模型,结果表明泰姆科节点单层球面网壳承载力随跨度的增大而减小,随矢跨比的增大而增大。当网壳达到稳定极限承载力时泰姆科节点发生弯曲变形的同时伴随着剪切变形。通过对比单层球面网壳多尺度模型和弹簧单元模型的双重非线性稳定分析结果,发现节点剪切变形对结构承载力的降低程度随网壳跨度及矢跨比的增大而减小。最后,提出了一种可综合考虑泰姆科节点弯曲变形和剪切变形的节点“组合模型”,并验证了该模型能精准地反映泰姆科节点的力学性能。A multi-scale modeling method of Temcor joint is proposed in order to consider the influence of Temcor joint shearing stiffness on the stability of aluminum alloy single-layer spherical reticulated shells.The stability of the single-layer spherical reticulated shell with Temcor joint decreases with the increase of span but increases with the increase of risespan ratio.The deformation of the joint is the deformation of bending and shearing when the reticulated shell reaches the bearing capacity.By comparing the stability analysis results of single-layer spherical reticulated shell with Temcor joint under multi-scale model and spring element model,the effect of shearing deformation on structural bearing capacity decreases with the increase of reticulated shell span and rise-span ratio.Finally,a combined model of Temcor joint that accounts for bending and shearing deformation is proposed.And the combined model can accurately reflect the mechanical properties of the Temcor joint.

关 键 词：泰姆科节点 铝合金单层球面网壳 稳定极限承载力 矢跨比 多尺度模型 弹簧单元模型 剪切变形 

分 类 号：TU391[建筑科学—结构工程]