体育场悬挑屋盖结构的创新设计与制作

Innovative Design and Production of Overhanging Roof Structure in Stadium

在众多的大跨度空间结构形式中,悬挑结构以其独特的建筑造型和覆盖功能,在大型体育场看台屋盖中得到十分广泛的应用.该类结构通常因具有跨度大、结构柔、材料轻等特点,是典型的荷载敏感结构,特别是对于强风作用下的大型体育场来说,悬挑屋盖上的荷载常常是控制结构安全性的主要因素.本文通过Midas对体育场悬挑屋盖模型施加模拟荷载进行电算分析,了解到体育场悬挑屋盖结构的受力规律等.同时,根据电算结果对危险杆件截面进行适当的优化,以使体育场悬挑屋盖结构得到必要的优化,提高其安全性.

Among many large--span spatial structures,cantilever structure has been widely used in large stadium grandstand roof because of its unique architectural shape and covering power.This kind of structure is a typical load sensitive structure because of its large span,soft structure and light material.Especially for large stadium un der strong wind,the load on the cantilevered roof is often the main factor to control the safety of the structure.In this article,Midas is used to calculate and analyze the simulated load applied to the cantilevered roof model of the stadium,so as to understand the force law of the cantilevered roof structure of the stadium.Moreover,accord-ing to the computer calculation results,we optimize the section of member bar properly in order to optimize the cantilever roof structure of stadium and improve its security.