双层屋顶房屋的风荷载

IF 0.9 Q4 ENGINEERING, CIVIL

Australian Journal of Structural Engineering Pub Date : 2021-11-01 DOI:10.1080/13287982.2021.1997369

K. Parackal, J. Ginger, Joshua Eaton

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引用次数: 1

摘要

最近的损害调查显示，双技能屋顶房屋的特点是两个单坡屋顶斜坡，垂直“上升”连接上下屋顶斜坡，在暴风雨中很容易受到包层和结构损坏的影响。风荷载标准，如as /NZS 1170.2目前没有提供压力系数，用于推导这些类型的双技能屋顶的设计风荷载。本文采用1/50比例的风洞模型对典型的双层屋顶房屋进行了研究。研究发现，在倾斜进场风作用下，上屋面坡面承受较大的吸力压力，尤其是在迎风角附近。另外，下顶板坡面和隆升面承受较大的正压力。靠近端墙的结构(即椽子)也承受很大的压紧载荷。包层载荷和椽子压紧载荷明显大于AS/NZS 1170.2中目前可用的应用数据所获得的值

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Wind loads on double-skillion roof houses

ABSTRACT Recent damage surveys have shown that double-skillion roof houses, characterised by two monoslope roofslopes with a vertical ‘rise’ connecting the upper and lower roof slopes, are vulnerable to cladding and structural failures in windstorms. Wind loading Standards such as AS/NZS 1170.2 do not currently provide pressure coefficients for deriving design wind loads specifically for these types of double-skillion roofs. This paper presents a 1/50 scale wind tunnel model study on a typical double-skillion roof house. The study found that the upper roof slope experiences large suction pressures especially near the upwind corner for oblique approach winds. In addition, the lower roof slope and rise are subjected to large positive pressures. The structure (i.e. rafters) near the end-walls also experiences large hold-down loads. Cladding loads and rafter hold-down loads are significantly larger than values obtained from applying data currently available in AS/NZS 1170.2

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来源期刊

Australian Journal of Structural Engineering ENGINEERING, CIVIL-

CiteScore

2.50

自引率

0.00%

发文量

期刊介绍： The Australian Journal of Structural Engineering (AJSE) is published under the auspices of the Structural College Board of Engineers Australia. It fulfils part of the Board''s mission for Continuing Professional Development. The journal also offers a means for exchange and interaction of scientific and professional issues and technical developments. The journal is open to members and non-members of Engineers Australia. Original papers on research and development (Technical Papers) and professional matters and achievements (Professional Papers) in all areas relevant to the science, art and practice of structural engineering are considered for possible publication. All papers and technical notes are peer-reviewed. The fundamental criterion for acceptance for publication is the intellectual and professional value of the contribution. Occasionally, papers previously published in essentially the same form elsewhere may be considered for publication. In this case acknowledgement to prior publication must be included in a footnote on page one of the manuscript. These papers are peer-reviewed as new submissions. The length of acceptable contributions typically should not exceed 4,000 to 5,000 word equivalents. Longer manuscripts may be considered at the discretion of the Editor. Technical Notes typically should not exceed about 1,000 word equivalents. Discussions on a Paper or Note published in the AJSE are welcomed. Discussions must address significant matters related to the content of a Paper or Technical Note and may include supplementary and critical comments and questions regarding content.