\r王元清¹，张 颖¹，张俊光¹，欧阳元文\r²\r
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AuthorsHTML:\r王元清¹，张 颖¹，张俊光¹，欧阳元文\r²\r
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AuthorsListE:\rWang Yuanqing ¹，Zhang Ying ¹，Zhang Junguang¹，Ouyang Yuanwen\r²\r
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AuthorsHTMLE:\rWang Yuanqing ¹，Zhang Ying ¹，Zhang Junguang¹，Ouyang Yuanwen\r²\r
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Unit:\r1. 清华大学土木工程安全与耐久教育部重点实验室，北京100084；
2. 上海建科铝合金结构建筑研究院，上海 200949\r
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Unit_EngLish:\r1. Key Laboratory of Civil Engineering Safety and Durability of Ministry of Education of China，Tsinghua University，Beijing 100084，China；
2. Shanghai Jianke Aluminum Structure & Architecture Research Institute，Shanghai 200949，China\r
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Abstract_Chinese:\r\r铝合金网壳结构在大跨空间结构中具有广泛的应用前景．南京牛首山佛顶宫大穹顶工程中采用了铝合金网壳结构，其节点包含两种截面杆件，均使用不锈钢环槽铆钉与节点盘进行紧固连接，形成了特殊形式的箱形\r-\r工字形盘式节点．为研究铝合金箱形\r-\r工字形盘式节点在面外弯矩作用下的传力机理、变形性能、节点刚度、破坏模式和极限承载力，开展了箱形\r-\r工字形盘式节点整体试件的静力加载试验，使用有限元软件\rABAQUS\r对试验加载全过程进行了数值模拟，并将试验结果与相同截面铝合金箱形\r\r-\r工字形盘式节点相连对肢\r节点的试验结果进行对比分析．试验结果表明：南京牛首山佛顶宫大穹顶工程中采用的铝合金箱形\r-\r工字形盘式节点为半刚性节点，节点刚度较大，整体延性相对较小；在较大面外弯矩作用下构件的上节点盘发生屈曲变形，试件加载破坏时下节点盘仍处于弹性阶段，杆件连接部位腹板出现明显屈曲变形，杆件与上节点盘连接处发生断裂破坏．足尺有限元模型的数值模拟结果与试验结果吻合较好，具有工程应用可靠性．与相同截面的铝合金箱形\r-\r工字形盘式节点相连对肢节点试验结果相比，铝合金箱形\r-\r工字形盘式节点\r6\r根连接杆件之间的相互作用提高了节点刚度，但在一定程度上降低了节点的延性和抗弯承载力，在设计和使用过程中需进一步加强和改进．\r\r\r
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Abstract_English:\r\rAluminum alloy reticulated shells have shown prospects for wide application in large-span space structures\r．\rIn the Nanjing Oxhead Mountain Buddha Palace project\r，\rChina\r，\raluminum alloy box-I section member TEMCOR joints are used in its reticulated shells\r．\rThe joint plates are connected by stainless steel swage-locking pins with joint members of two sections\r．\rIn order to study the mechanical behavior\r，\rdeformation performance\r，\roverall stiffness\r，\rfailure mode\r，\rand moment resistance of these joints under out-of-plane bending load\r，\ra test of a full-scale specimen was conducted\r．\rThe complete loading process was simulated by the general finite element software ABAQUS\r，\rand the test results were compared with their counterparts for the two opposing members\r．\rTest results showed that the aluminum alloy box-I section member TEMCOR joint is semi-rigid with high stiffness and poor duc-tility\r．\rBuckling deformations occurred in the upper plate under the out-of-plane bending load\r，\rand the lower plate was still in an elastic stage when the joint failed\r．\rClear buckling deformations and fractures occurred in the webs of the connecting parts of the members and the upper plate\r．\rThe numerical simulation of the full-scale finite element model agreed well with the experimental results\r，\rindicating its reliability in engineering applications\r．\rCompared with the joint of two opposing members\r，\rthe stiffness of the joint was improved by the interaction between its members\r，\ralthough ductility and bearing capacity of the joint were reduced\r，\rrequiring improvement for further engineering applications\r．\r\r
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Keyword_Chinese:铝合金箱形-工字形盘式节点；变形性能；破坏模式；有限元分析\r

Keywords_English:box-I section member TEMCOR joints；deformation performance；failure mode；finite element analysis\r


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