| 初始载荷对一端固支一端简支梁静力特性的影响 |
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| 引用本文： | 杨治国,张家玮.初始载荷对一端固支一端简支梁静力特性的影响[J].兰州铁道学院学报,2011,30(1). |
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| 作者姓名： | 杨治国 张家玮 |
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| 作者单位： | 兰州交通大学土木工程学院,甘肃,兰州,730070 |
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| 摘 要： | 研究了初始载荷对一端固支一端简支梁静力特性的影响,得到了其静力计算的闭合解.引入了初始载荷影响系数以反映初始载荷的非线性效应,讨论了初始载荷的大小、梁的截面惯性矩和跨度对初始载荷影响系数的影响.结果表明:当存在初始载荷时,后续载荷所引起的静力反应会减小,其减小程度与初始载荷的大小和梁的刚度参数有关.建议在设计轻型及柔性结构时,对初始载荷的这种非线性影响予以适当考虑.
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| 关 键 词： | 工程结构 静力特性 微分方程闭合解 初始载荷 非线性影响 初始载荷影响系数 |
Effect of Initial Load on Static Characteristics of Beams Fixed at One End and Simply Supported at the Other End |
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| YANG Zhi-guo,ZHANG Jia-wei.Effect of Initial Load on Static Characteristics of Beams Fixed at One End and Simply Supported at the Other End[J].Journal of Lanzhou Railway University,2011,30(1). |
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| Authors: | YANG Zhi-guo ZHANG Jia-wei |
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| Institution: | YANG Zhi-guo,ZHANG Jia-wei(School of Civil Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China) |
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| Abstract: | The effect of initial load on the static characteristics of beams fixed at one end and simply supported at the other end is studied.Based on a nonlinear differential equation of the static responses,the closed-form solutions of static responses for such beams are given,with the effect of initial load considered.An initial load influence factor is introduced to indicate the nonlinear effect of initial load and how it is affected by the magnitude of initial load,sectional moment of inertia and span of the bea... |
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| Keywords: | engineering structure static characteristic closed-form solution of differential equation initial load nonlinear effect initial load influence factor |
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