| 引用本文: | 郑亮,邵晓波,刘杰峰,郭紫燕,涂礼松,田子童,宁蕊,董彦莉.网壳结构钢与混凝土组合节点力学性能试验[J].哈尔滨工业大学学报,2016,48(12):83.DOI:10.11918/j.issn.0367-6234.2016.12.011 |
| ZHENG Liang,SHAO Xiaobo,LIU Jiefeng,GUO Ziyan,TU Lisong,TIAN Zitong,NING Rui,DONG Yanli.Mechanical properties on steel and concrete composite joints in reticulated domes[J].Journal of Harbin Institute of Technology,2016,48(12):83.DOI:10.11918/j.issn.0367-6234.2016.12.011 |
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| 网壳结构钢与混凝土组合节点力学性能试验 |
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郑亮,邵晓波,刘杰峰,郭紫燕,涂礼松,田子童,宁蕊,董彦莉
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(中北大学 土木工程学科管理部,太原030051)
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| 摘要: |
| 为研究钢与混凝土组合的网壳节点在轴压和压弯荷载作用下的力学性能，对10个不同参数的钢与混凝土组合的节点进行试验研究.试验构件主要变化参数包括：内圆钢管的壁厚和半径、外圆钢管的壁厚及矩形钢管与外圆钢管的不同连接方式.试验研究表明：在轴压和压弯荷载作用下节点表现出了与钢管混凝土相似的特点，具有较高的承载力和良好的塑性变形能力；内圆钢管的壁厚和半径对节点承载力影响较大，外圆钢管的壁厚对节点承载力影响较小；连接方式对节点承载力影响较大，圆钢管高于矩形钢管的节点承载力比圆钢管与矩形钢管齐平的承载力至少提高15%；轴压荷载作用下节点的破坏方式可以分为中心压缩和梭形偏转破坏；压弯荷载作用下节点的破坏方式分为节点和钢管屈服破坏.
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| 关键词: 钢与混凝土组合 网壳节点 轴压试验 偏压 承载力 |
| DOI：10.11918/j.issn.0367-6234.2016.12.011 |
| 分类号:TU398 |
| 文献标识码:A |
| 基金项目:国家自然科学基金青年科学基金(51208473) |
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| Mechanical properties on steel and concrete composite joints in reticulated domes |
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ZHENG Liang, SHAO Xiaobo, LIU Jiefeng, GUO Ziyan, TU Lisong, TIAN Zitong, NING Rui, DONG Yanli
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(Department of Civil Engineering, North University of China, Taiyuan 030051,China)
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| Abstract: |
| To study the mechanical properties of steel and concrete composite joints under axial compression loads, ten steel and concrete composite joints with different parameters were tested. The main parameter changes of test member include: an inner pipe wall thickness and the radius of the circle, the wall thickness of the outer pipe and the connections between rectangular steel tube and the outer tubes. The experimental results show that steel and concrete composite joints have much in common with steel and concrete, i.e., it has high capacity and good plastic deformation capacity under axial compression loads; the wall thickness and radius of inner pipe is larger than the wall thickness of the outer pipe on the bearing capacity. Connections have greater influence on the joints bearing capacity than others. The bearing capacity of round steel tube is higher than rectangular one and it will be raised at least 15% than the same capacity of round steel tubes and rectangular ones. Under axial compression loads, the failure mode of joints can be divided into central compression failure and spindle deflection failure. Under eccentric loading, the failure mode of joints is divided into joints failure and steel yield damage of pipe.
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| Key words: steel and concrete composite joints of reticulated domes axial compression test eccentric loading bearing capacity |
