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王敬燁¹，劉文武²

（1 中國(guó)京冶工程技術(shù)有限公司，北京 100088；2 中國(guó)鐵道科學(xué)研究院鐵道建筑研究所，北京 100081）

 

[摘要] 研究了貝殼面的幾何造型方法，并以應(yīng)變能最小為目標(biāo)對(duì)貝殼形曲面進(jìn)行形狀優(yōu)化。從工程實(shí)際的角度出發(fā)，對(duì)貝殼形網(wǎng)殼的基本靜力性能和靜力穩(wěn)定性能進(jìn)行了研究，考察了初始缺陷、不均勻荷載分布、支承條件等因素對(duì)結(jié)構(gòu)性能的影響，并給出了相應(yīng)的設(shè)計(jì)建議。結(jié)果表明貝殼面是一種良好的空間結(jié)構(gòu)自由曲面形式。

[關(guān)鍵詞] 結(jié)構(gòu)形態(tài)；造型；形狀優(yōu)化；貝殼面；靜力穩(wěn)定性

中圖分類號(hào)：TU33    文獻(xiàn)標(biāo)識(shí)碼：A    文章編號(hào)：1002-848X(2012)12-0069-05

 

Wang Jingye-, Liu Wenwu²

(1 China Jingye Engineering Corporation Limited, Beijing 100088, China; 2 China Academy of Railway Sciences, Beijing 100081, China)

 

Abstract: The geometrical model method of the seashell was studied. According to the strain energy minimization, the seashell-shaped surface was optimized. For the practical application, the static mechanical behaviors and static stability behaviors of seashell-shaped space structures were studied. The effects of initial geometrical imperfections, unsymmetrical distribution of loads and supporting conditions were discussed. And the design recommendations were given for these situations. The results show that the seashell-shaped surface is a good form for free-form space structures.

Keywords: structural morphology; modeling; shape optimization; seashell-shaped surface; static mechanical behavior

作者簡(jiǎn)介：王敬燁，碩士，工程師， Email：jingyewang@163.com.

 

［1］ WESTER T. Structural patterns in nature - part II ［C］//Proceedings of IASS 2004 Symposium, Montpellier, 2004.

［2］ 武岳，李欣，王敬燁，等. 自由曲面空間結(jié)構(gòu)的形態(tài)學(xué)研究［C］//第十二屆空間結(jié)構(gòu)學(xué)術(shù)會(huì)議論文集. 北京，2008.

［3］ 崔昌禹, 嚴(yán)慧. 自由曲面結(jié)構(gòu)形態(tài)創(chuàng)構(gòu)方法：高度調(diào)整法的建立與其在工程設(shè)計(jì)中的應(yīng)用［J］. 土木工程學(xué)報(bào), 2006, 39(12): 1-6.

［4］ 沈世釗，陳昕. 網(wǎng)殼結(jié)構(gòu)穩(wěn)定性［M］.北京：科學(xué)出版社, 1999.