广州西塔巨型斜交网格空间相贯节点试验研究  

Experimental study on spatial intersecting connections used in obliquely crossing mega lattice of the Guangzhou West Tower

作　　者：韩小雷[1] 黄超[1] 方小丹[2] 韦宏[2] 季静[1] 唐嘉敏[2] 

机构地区：[1]华南理工大学亚热带建筑科学国家重点实验室,广东广州510640 [2]华南理工大学建筑设计研究院,广东广州510640

出　　处：《建筑结构学报》2010年第1期63-69,共7页Journal of Building Structures

基　　金：广东省自然科学基金项目(06105416);华南理工大学亚热带建筑科学国家重点实验室开放研究项目(2008KA01)

摘　　要：平面相贯节点试验无法考虑西塔实际结构中节点平面外角度及楼面梁对节点平面外刚度的贡献。为了更好地研究实际结构中节点的受力性能,在改进加强环+衬板平面相贯节点构造的基础上提出了一种空间相贯节点构造,进行了比例为1∶5.86的4个节点模型试验。试验结果表明:空间相贯节点可以满足西塔结构承载力的要求,验证了节点承载力大于构件承载力的强节点设计原则。平面外位移对节点承载力的影响较大,在设计中应采用加强楼面梁或采用预应力索等方式严格控制节点平面外位移,保证结构安全可靠。Due to the out-of-plane angles of the mega lattice used in the Guangzhou West Tower, planar intersecting connection test cannot fully reflect the actual structural performance of the connection nor take into account the influence of structural beams. In order to investigate the mechanical behavior of the connection in practical use, one spatial intersecting connection was designed based on the planar connection with reinforcing plate and lining board, and four 1 ： 5.86 scale models were tested under multi-step monotonic axial loads. Experimental results indicate that the capacity of connections can meet the design requirement, and the design principle of strong connection can be assured. The tests verified that the out-of-plane displacement can affect the capacity of connections considerably. Therefore, in order to ensure the safety of the structure, the out-of-plane displacement must be controlled strictly by enhancing the intersecting beams or by applying prestressed tendons.

关 键 词：超高层建筑 钢管混凝土 斜交网格 空间相贯节点 静力试验 受力性能 

分 类 号：TU973.17[建筑科学—结构工程] TU317.1