折面四角锥异形空间桁架施工关键技术研究

RESEARCH ON KEY CONSTRUCTION TECHNIQUE OF SPECIALLY-SHAPED PYRAMID SPACE TRUSS

贵阳奥林匹克体育中心(二期)热身馆项目屋盖为折面四角锥异形空间桁架结构,针对该桁架外形独特且相邻支座高差为3.0m,传力方式与传统的桁架结构有较大区别的特点,采用整体提升施工方法,并对提升点布置方案进行比选。结果表明各测点的实测变形与施工模拟结果基本一致,提出的施工关键技术合理。

The warm-up hall of Guiyang Olympic Sports Center(phase II) adopts specially-shaped pyramid space truss roof, whose height difference among adjacent bases is as high as 3.0 m and whose force transfer has obvious difference from traditional truss structure. Therefore, integral lifting construction method was adopted and different layout schemes of lifting points were compared with each other. It was found that the measured deformation of this method is basically same with the construction simulation result and the key construction technique proposed is reasonable.