ABSTRACT

This study investigated the wind pressure characteristics of an elliptical plan retractable dome roof. Wind tunnel experiments were performed on elliptical dome roofs with varying wall height-to-span ratios (0.1–0.5) and opening ratios (0, 10, 30, and 50 %), where the opening ratio was defined as the ratio of the open area of the roof to the total area of the roof. The resulting peak pressure coefficients of the closed dome roof were then compared with those of the Japanese wind load code (AIJ-RLB (2015)) as there are no current peak pressure coefficients for the cladding design code of elliptical dome roofs. The resulting peak pressure coefficients for each elliptical retractable dome roof opening ratio were also compared with those for the cladding design of spherical retractable domes proposed in previous research. Finally, based on the results of the comparative analysis, negative and positive peak pressure coefficients were proposed for the cladding design of elliptical retractable dome roofs.

摘要

本研究调查了椭圆平面可伸缩圆顶屋顶的风压特性。风洞实验是在具有不同墙高跨度比 (0.1-0.5) 和开口比 (0, 10, 30, 和 50%) 的椭圆形圆顶屋顶上进行的，其中开口比定义为开口比屋顶面积与屋顶总面积之比。然后将得到的封闭圆顶屋顶的峰值压力系数与日本风荷载规范 (AIJ-RLB ( 2015)) 因为椭圆圆顶屋顶的覆层设计规范没有当前的峰值压力系数。每个椭圆形可伸缩圆顶屋顶开口率的峰值压力系数也与先前研究中提出的球形可伸缩圆顶覆层设计的峰值压力系数进行了比较。最后，基于对比分析的结果，提出了椭圆伸缩穹顶覆层设计的正负峰值压力系数。