华贸广场索穹顶膜结构的设计与施工

发布时间：2018-04-15 17:33

本文选题：索穹顶 + 膜结构　；参考：《空间结构》2016年04期

【摘要】：北京华贸中心是由写字楼、商城、酒店公寓等组成的大规模商务建筑群,其间为华茂广场,后由于使用功能要求在广场上加建顶盖.根据已建结构及空间,采用盖格体系索穹顶膜结构.首先进行初始形态(找形)设计,确定预拉力分布及形状.然后进行在风荷载、活荷载等作用下的受力分析,依据杆件强度、整体变形及支座反力等指标,修订初始预拉力,重新进行找形设计.反复迭代,直至能够满足受力性能的合理初始形态.为保证施工过程能够准确施加设计预定的索拉力,进行了施工过程模拟验算.内环采用双层,以保证层间开敞通风.膜材选用了两种不同透光率的材料,并采用环向热合缝布置,以丰富建筑表现.竣工效果良好,充分体现了索穹顶体系结构受力合理、建筑轻盈飘逸的特点.
[Abstract]:Beijing Huamao Center is a large-scale business complex composed of office buildings, shopping malls, hotel apartments and so on.According to the existing structure and space, the cable dome membrane structure of Gable system was adopted.First, the initial shape (shape finding) design is carried out to determine the pretension distribution and shape.Then the force analysis under the action of wind load and live load is carried out. According to the strength of the member, the integral deformation and the reaction force of the bearing, the initial pretension force is revised and the shape finding design is redesigned.Iteration is repeated until a reasonable initial form of mechanical performance can be satisfied.In order to ensure that the construction process can accurately apply the designed cable pull force, the construction process simulation checking calculation is carried out.The inner ring adopts double layer to ensure open ventilation between layers.Two kinds of materials with different transmittance were used in the membrane material, and the circular thermal joint arrangement was adopted to enrich the performance of the building.The effect of completion is good, which fully reflects the characteristics of cable dome system structure with reasonable force and light and elegant construction.
【作者单位】：北京思博福瑞空间结构技术有限公司;北京光翌膜结构建筑有限公司;北京市建筑工程研究院;
【分类号】：TU38;TU765

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