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類橢圓形及正多邊形弦支穹頂結構選型分析*
于敬海1,2,閆明婷2,韓鳳清2,王少華3,閆翔宇1,黃兆緯4
摘 要

(1 天津大學建筑設計研究院, 天津 300073; 2 天津大學建筑工程學院, 天津 300072;3 中國建筑西南設計研究院有限公司, 成都 610042; 4 天津市建筑設計院, 天津 300074)

[摘要]基于MIDAS Gen有限元軟件進行大跨度異形弦支穹頂結構選型分析,主要進行網格形式對結構性能影響的研究以及類橢圓形、正多邊形弦支穹頂的結構選型分析。研究表明,矢跨比較小時,凱威特-聯方型弦支穹頂結構性能較好;若建筑造型無特殊要求,正多邊形弦支穹頂和邊界不規則的類橢圓形弦支穹頂上部網殼宜采用切割球面、橢球面、橢圓拋物面等形式。

[關鍵詞]類橢圓形; 正多邊形; 弦支穹頂; 結構選型

中圖分類號:TU393-3文獻標識碼:A文章編號:1002-848X(2019)04-0001-06

 

Structural system selection analysis on ellipse-like and equilateral polygon suspendome

Yu Jinghai1,2, Yan Mingting2, Han Fengqing2, Wang Shaohua3, Yan Xiangyu1, Huang Zhaowei4

(1 Architectural Design and Research Institute of Tianjin University, Tianjin 300073, China;2 School of Civil Engineering, Tianjin University, Tianjin 300072, China;3 Southwest China Architectural Design & Research Institute Co., Ltd., Chengdu 610042, China;4 Tianjin Architecture Design Institute, Tianjin 300074,  China)

Abstract:Based on the finite element software MIDAS Gen, structural system selection of large-span specially-shaped suspendome was analyzed. The influence of grid form on structural performance was mainly studied and the analysis on  structural system selection of ellipse-like suspendome and equilateral polygon suspendome was conducted. The results show that kiewitt- lamella suspendome has better structural performance if the ratio of rise to span is small. If construction models have no special requirements, equilateral polygon suspendome and the reticulated shell forms of ellipse-like suspendome with irregular boundaries  adopt forms of cut surfaces of sphere, ellipsoid surface and elliptic paraboloid surface.

Keywords:ellipse-like; equilateral polygon; suspendome; structural system selection

 

*天津市科技支撐計劃項目(13ZCZDSF01400)。

 

作者簡介:于敬海,博士,研究員,一級注冊結構工程師, Email:[email protected]

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