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椭圆形中心开口穹顶屋顶的峰值净压力系数

Peak Net Pressure Coefficients of Elliptical Center-Open Dome Roofs.

作者信息

Lee Jong Ho, Cheon Dong Jin, Kim Yong Chul, Yoon Sung Won

机构信息

Department of Architecture, Seoul National University of Science and Technology, 232, Gongneung-ro, Nowon-gu, Seoul 01811, Korea.

Department of Architecture, Tokyo Polytechnic University, Atsugi 243-0297, Kanagawa, Japan.

出版信息

Materials (Basel). 2022 Aug 10;15(16):5497. doi: 10.3390/ma15165497.

DOI:10.3390/ma15165497
PMID:36013630
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9413018/
Abstract

Recently, the demand for spatial structures such as retractable dome roofs is increasing. The safety of dome roofs must be ensured even when they are open. Hence, studies analyzing the peak pressure coefficients of spherical dome roofs are actively being conducted. However, no peak pressure coefficients for the cladding design of elliptical retractable dome roofs have been proposed. Although several studies on elliptical open dome roofs that open from the edge to the center have been conducted, studies on those that open from the center to the edge are still insufficient. This study investigated the peak pressure coefficients of elliptical center-open dome roofs. For wind tunnel tests, a model was fabricated with an opening ratio of 30%. Under experimental conditions, five different wall height-to-span ratios (from 0.1 to 0.5) were used, with the roof rise-to-span ratio set at 0.1. Accordingly, the experimental values of the peak pressure coefficients of elliptical center-open dome roofs were compared with those of the closed dome roofs proposed in the Korean and Japanese wind load codes. Subsequently, their efficiency was verified. The findings were also compared with previous research outcomes. Based on the results, peak net pressure coefficients are proposed for cladding designs suitable for elliptical center-open dome roofs.

摘要

近年来，对可伸缩穹顶等空间结构的需求不断增加。即使在穹顶打开时，也必须确保其安全性。因此，正在积极开展对球形穹顶屋顶峰值压力系数的分析研究。然而，尚未提出用于椭圆形可伸缩穹顶屋顶覆层设计的峰值压力系数。尽管已经对从边缘向中心打开的椭圆形开放式穹顶屋顶进行了多项研究，但对从中心向边缘打开的此类屋顶的研究仍不充分。本研究调查了椭圆形中心开放式穹顶屋顶的峰值压力系数。在风洞试验中，制作了一个开口率为30%的模型。在实验条件下，使用了五种不同的墙高与跨度比（从0.1到0.5），屋顶矢高与跨度比设定为0.1。据此，将椭圆形中心开放式穹顶屋顶的峰值压力系数实验值与韩国和日本风荷载规范中提出的封闭穹顶屋顶的实验值进行了比较。随后，验证了它们的有效性。研究结果还与之前的研究成果进行了比较。基于这些结果，提出了适用于椭圆形中心开放式穹顶屋顶覆层设计的峰值净压力系数。

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本文引用的文献

1
Experimental Investigation of Wind Pressure Characteristics for Cladding of Dome Roofs.穹顶屋面围护结构风压特性的试验研究
Materials (Basel). 2021 Sep 13;14(18):5266. doi: 10.3390/ma14185266.