考慮彎矩作用梭形格構(gòu)柱穩(wěn)定承載力實(shí)用算法研究
田偉,干鋼
- 摘 要
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(浙江大學(xué)建筑設(shè)計(jì)研究院, 杭州310028)[摘要]以大型通用軟件ANSYS為平臺,研究以軸力為主、同時(shí)考慮彎矩作用的梭形格構(gòu)柱的穩(wěn)定承載能力。通過對不同高度和長細(xì)比的梭形格構(gòu)柱進(jìn)行非線性穩(wěn)定計(jì)算和參數(shù)分析,提出了梭形格構(gòu)柱穩(wěn)定承載力的實(shí)用計(jì)算方法:以彈性特征值為基礎(chǔ)計(jì)算梭形格構(gòu)柱的等效長細(xì)比,并利用彎矩系數(shù)對等效長細(xì)比進(jìn)行修正,得到修正長細(xì)比后即可通過查表的方式得到梭形格構(gòu)柱穩(wěn)定承載力。[關(guān)鍵詞]梭形格構(gòu)柱; 非線性; 穩(wěn)定承載力; 實(shí)用計(jì)算方法; 修正長細(xì)比中圖分類號:TU391文獻(xiàn)標(biāo)識碼:A文章編號:1002-848X(2013)15-0063-05Practical calculation method of stability bearing capacity of shuttle-shaped steel lattice columns with bending momentTian Wei, Gan Gang(Architectural Design and Research Institute of Zhejiang University, Hangzhou 310028, China)Abstract: The stability bearing capacity of shuttle-shaped steel lattice columns subject to combined axial force and bending moment is explored through general software ANSYS. Through nonlinear stability analysis and parameter analysis of shuttle-shaped steel lattice columns with various heights and slenderness ratios, a practical calculation method is proposed to calculate stability bearing capacity of shuttle-shaped steel lattice columns with bending moment: equal slenderness ratio based on elastic buckling eigenvalues is present; moment ratio is then proposed to modify slenderness ratio, and the ratio can be used to get the stability bearing capacity of shuttle-shaped steel lattice columns through tables.Keywords: Shuttle-shaped steel lattice columns; nonlinear; stability bearing capacity; practical calculation method; modified slenderness ratio作者簡介:田偉,工學(xué)博士,工程師,Email: vannytian@163.com。參考文獻(xiàn)[1]WANG D S, GAO C, ZHANG W Y, et al. A brief introduction on structural design of cable-membrane roof and sun valley steel structure for Expo Axis project [J]. Spatial Structures, 2009, 15(1): 89-96.[2]蘭勇,郭彥林,陳國棟.梭形鋼格構(gòu)柱彈性屈曲性能[J]. 建筑結(jié)構(gòu)學(xué)報(bào),2002, 23(5): 18-24.[3]郭彥林,陳國棟,蘭勇.三管梭形鋼格構(gòu)柱穩(wěn)定極限承載力研究[J].建筑結(jié)構(gòu)學(xué)報(bào),2002,23(5): 25-30.[4]蘭勇,郭彥林,劉濤,等.三管梭形鋼格構(gòu)柱縮尺模型破壞性穩(wěn)定試驗(yàn)研究[J].建筑結(jié)構(gòu)學(xué)報(bào),2002, 23(5): 41-48.[5]郭彥林,蘭勇,高玉峰,等.三管梭形鋼格構(gòu)柱足尺破壞性穩(wěn)定試驗(yàn)研究[J].建筑結(jié)構(gòu)學(xué)報(bào),2002, 23(5): 31-40.[6]童樂為,陳以一,鄭鴻志,等.新白云國際機(jī)場航站樓鋼管綴板柱足尺試驗(yàn)[J].同濟(jì)大學(xué)學(xué)報(bào),2003, 31(7):767-771.[7]郭彥林,鄧科,林冰.梭形柱的穩(wěn)定性能及設(shè)計(jì)方法研究[J].工業(yè)建筑,2007, 37(7): 92-95.[8]田偉,向新岸,趙陽,等. 考慮彎矩作用梭形鋼格構(gòu)柱穩(wěn)定承載力非線性有限元分析[J]. 建筑結(jié)構(gòu)學(xué)報(bào),2010,31(5): 42-48.[9]田偉,趙陽,向新岸,等.考慮彎矩作用梭形鋼格構(gòu)柱的穩(wěn)定性能[J].土木建筑與環(huán)境工程,2010,32(6):22-27.[10]同濟(jì)大學(xué).上海世博會陽光谷17m格構(gòu)柱模型試驗(yàn)簡報(bào)[R].上海:同濟(jì)大學(xué),2008.[11]同濟(jì)大學(xué).上海世博會陽光谷35m格構(gòu)柱模型試驗(yàn)簡報(bào)[R].上海:同濟(jì)大學(xué),2008.
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