| 拉索预应力折线型立体桁架拱布索方案研究 |
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| 引用本文： | 贺拥军,章小桐,周绪红.拉索预应力折线型立体桁架拱布索方案研究[J].湖南大学学报(自然科学版),2011,38(8):7-12. |
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| 作者姓名： | 贺拥军 章小桐 周绪红 |
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| 作者单位： | 1. 湖南大学土木工程学院,湖南长沙,410082
2. 湖南大学土木工程学院,湖南长沙410082;兰州大学土木工程与力学学院,甘肃兰州 730000 |
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| 基金项目： | 国家自然科学基金资助项目(50508013); 湖南省杰出青年基金资助项目(08JJ1006); 教育部新世纪优秀人才资助项目(NCET-2007-0266); “十一五”国家科技支撑计划重点资助项目(2006BAJ18B06-01) |
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| 摘 要： | 针对折线型立体桁架拱结构,提出了4种拱平面内的布索方案,研究了4种方案下预应力拱结构的静力及稳定性能,分别从结构位移的减小、索初始预拉力值的高低、水平支反力的降幅、杆件内力分布的均匀性及结构稳定性的提高5个方面与未布索立体桁架拱作了综合对比.结果表明,按照桁架拱在极限荷载作用下的屈曲形态布置撑杆拉索能够最有效地改善拱的...
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| 关 键 词： | 静力性能 拉索预应力 折线型立体桁架拱 布索方案 稳定极限承载力 失稳模态 |
Research on the Arrangement Styles of Cables for Pretensioned Folded Line Type 3D-trussed Arch |
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| HE Yong-jun,ZHANG Xiao-tong,ZHOU Xu-hong.Research on the Arrangement Styles of Cables for Pretensioned Folded Line Type 3D-trussed Arch[J].Journal of Hunan University(Naturnal Science),2011,38(8):7-12. |
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| Authors: | HE Yong-jun ZHANG Xiao-tong ZHOU Xu-hong |
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| Institution: | HE Yong-jun1,ZHANG Xiao-tong1,ZHOU Xu-hong1,2(1.College of Civil Engineering,Hunan Univ,Changsha,Hunan 410082,China,2.School of Civeil Engmeering and Mechanics,Lanzhou Univ,Lanzhou,Gansu 730000,China) |
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| Abstract: | For the folded line type three-dimensional(3D) trussed arches,four arrangement styles of cables in the arch plane were presented.The static and stability property of the pretensioned 3D trussed arch in those four arrangement styles was studied.The numerical results including the decrease in structural displacement,the initial tensile force of cables,the reduction in horizontal reaction force,the uniformity of distribution of member forces and the improvement of structural stability were compared with those ... |
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| Keywords: | static property prestressing folded line type 3D-trussed arch arrangement styles of cables stability bearing capacity instability modes |
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