重载张弦梁结构设计关键技术研究

发布时间：2018-05-11 15:17

本文选题：张弦梁 + 组合结构　；参考：《建筑结构学报》2015年05期

【摘要】：对重载张弦梁结构中混凝土板的组合作用、结构承载力、撑杆抗滑、水平地震作用传递方式以及结构平面外摆动等问题进行研究。通过有限元分析、理论推导和对相关工程实践的总结得出:混凝土板的组合作用可以减小重载张弦梁结构上弦构件的内力、增大结构承载力、提高结构的弯曲刚度;建议在撑杆底端分段设置抗滑索,避免撑杆底端向跨中滑移;利用连续混凝土板的受剪作用可将重载张弦梁所产生的水平地震作用传递给剪力墙等抗侧力构件;重载张弦梁结构没有发生整体或局部面外摆动的可能。据此提出结构中各主要构件的内力计算式,可用以初步确定重载张弦梁各主要构件的截面规格。
[Abstract]:The combined action of concrete slabs, the bearing capacity of the structure, the sliding resistance of the strut, the transmission mode of horizontal earthquake action and the out-of-plane swing of the structure are studied in this paper. Through finite element analysis, theoretical derivation and summary of relevant engineering practice, it is concluded that the combined action of concrete slabs can reduce the internal force of the chord member of the beam string structure under heavy load, increase the bearing capacity of the structure and increase the bending stiffness of the structure; It is suggested that anti-slide cables should be set up at the bottom end of the brace to avoid sliding from the bottom end of the brace to the mid-span, and the horizontal earthquake caused by the heavy-loaded beam string can be transferred to the lateral force resisting members such as shear wall by the shear action of continuous concrete slab. There is no possibility of integral or local out-of-plane wobble in heavy load beam string structure. Based on this, a formula for calculating the internal force of the main components of the structure is presented, which can be used to determine the cross section specifications of the main components of the heavy-duty beam string.
【作者单位】：华南理工大学亚热带建筑科学国家重点实验室;华南理工大学建筑设计研究院;
【基金】：华南理工大学亚热带建筑科学国家重点实验室开放课题(2014KB29,2015ZB30)
【分类号】：TU399

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