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（1 山東同圓設(shè)計(jì)集團(tuán)有限公司， 濟(jì)南 250101； 2 北京交通大學(xué)土木建筑工程學(xué)院, 北京 100044；3 山東建筑大學(xué)， 濟(jì)南 250101； 4 上海市建筑科學(xué)研究院上海市工程結(jié)構(gòu)安全重點(diǎn)實(shí)驗(yàn)室， 上海 200032）

［摘要］以矢跨比為1/6、支承高度為200mm的大跨球面屋蓋為模型進(jìn)行風(fēng)洞試驗(yàn)，運(yùn)用極值統(tǒng)計(jì)理論對(duì)風(fēng)壓極值相關(guān)性進(jìn)行了定性和定量分析，運(yùn)用結(jié)構(gòu)變量法求得了聯(lián)合保證率為78%的風(fēng)壓極值，并根據(jù)一元極值的風(fēng)壓極值算得折減系數(shù)，分析結(jié)果表明，在球面屋蓋順風(fēng)向中心線范圍內(nèi)，屋蓋背風(fēng)面的折減系數(shù)均大于屋蓋迎風(fēng)面的折減系數(shù)。進(jìn)一步研究了風(fēng)壓極值折減系數(shù)與風(fēng)壓極值相關(guān)性，得到折減系數(shù)與相關(guān)性度量呈正比。

［關(guān)鍵詞］圍護(hù)結(jié)構(gòu)； 風(fēng)壓極值相關(guān)性； 風(fēng)壓極限； 折減系數(shù)； 極值統(tǒng)計(jì)理論

中圖分類(lèi)號(hào)：TU973+.32文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2018)06-0109-05

Study on correlation and reduction coefficient of wind pressure extremum of enclosure structure for spherical roof

 Liu Hao1,  Wang Xia2,  Wei Ye3, Tian Yuji2,4

(1 Shandong Tongyuan Design Group Co.， Ltd.，  Jinan 250101，   China; 2 School of Civil Engineering and Architecture, Beijing Jiaotong University， Beijing 100044, China; 3 Shandong Jianzhu University， Jinan 250101，   China; 4 Shanghai Key Laboratory of Engineering Structure Safety， Shanghai Architectural Science Research Institute， Shanghai 200032，   China)

Abstract:The wind tunnel test was carried out on a large-span spherical roof with a span ratio of 1/6 and a bearing height of 200mm. The extremum statistics theory was used to qualitatively and quantitatively analyze the correlation of wind pressure extremum. The structural variable method was used to obtain the wind pressure extremum with a joint guarantee rate of 78%, and the reduction coefficient was calculated according to the wind pressure extremum of the univariate extremum. The analysis results show that in the centerline area of windward surface of the spherical roof, the reduction coefficient in leeward surface of the roof is greater than that of the roof windward surface. The correlation between wind pressure reduction coefficient and wind pressure extremum was further studied, and the reduction coefficient was proportional to the correlation measure.

Keywords:enclosure structure; wind pressure extremum correlation; wind pressure; reduction coefficient; extremum statistics theory

作者簡(jiǎn)介：劉浩，碩士，工程師，liuhao2010sdty@163.com。