（1 上海通正铝结构建设科技有限公司, 上海 201612；2 上海建科铝合金结构建筑研究院, 上海 201612）

［摘要］南京牛首山佛顶宫大穹顶为单层铝合金单层网壳，采用铝合金板式节点连接。为直观了解节点受力性能和破坏机理，对杆件高度为550mm的足尺铝合金网格单元试件进行试验研究。结果表明，节点符合“强节点弱构件”的基本要求。在试验的基础上，采用ABAQUS及ANSYS软件对铝合金板式节点及铝合金网格单元进行有限元分析，有限元分析结果和试验现象基本一致，验证了有限元模型的合理性与有效性。试验与有限元模拟的对比分析结果表明，本项目采用的铝合金板式节点在设计荷载作用下是安全和可靠的。

［关键词］南京牛首山佛顶宫； 铝合金结构； 网格单元； 板式节点； 试验研究； 有限元分析

中图分类号：TU395文献标识码：A文章编号：1002-848X(2020)11-0059-05

Experimental study and finite element analysis on the aluminum alloy gusset-type joints of the large dome in Nanjing Niushou Mountain Fo Ding Palace

LIU Xiaowei1,2, OUYANG Yuanwen1,2

（1 Shanghai Tongzheng Aluminium Structure Construction & Technology Co., Ltd., Shanghai 201612， China;2 Shanghai Jianke Aluminium Structure & Architecture Research Institute, Shanghai 201612， China）

Abstract:The large dome of Niushou Mountain Fo Ding Palace in Nanjing is a single-layer aluminum shell structure, connected by aluminum alloy gusset (AAG) joints. In order to intuitively understand the joint performance and failure mechanism of the project, a full-scale aluminum alloy grid unit test piece with a height of 550mm was experimentally studied. The test results show that the joint meets the basic requirements of “strong joint weak component”. Based on the experiments, ABAQUS and ANSYS software were used to perform finite element analysis on AAG joints and aluminum alloy grid units. The results of the finite element analysis were basically consistent with the experimental phenomena, which verified the rationality and effectiveness of the finite element model. The comparative analysis results of the test and the finite element simulation show that the AAG joint used in this project is safe and reliable under the design loads.

Keywords:Nanjing Niushou Mountain Fo Ding Palace; aluminum alloy structure; grid unit; gusset-type joint; experimental study; finite element analysis