| 王新堂,王者静.随机拉索刚度预应力空间钢桁架随机内力摄动分析[J].计算力学学报,2002,19(1):69~73 |
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| 随机拉索刚度预应力空间钢桁架随机内力摄动分析 |
| Random internal force analysis of prestressed spatial steel truss with randomcable stiffness on perturbation method |
| 修订日期：2001-05-20 |
| DOI：10.7511/jslx20021015 |
| 中文关键词: 预应力空间钢桁架,随机拉索刚度,随机内力,摄动分析 |
| 英文关键词:prestressed spatial steel truss,random cable stiffness,random internal force perturbation analysis. |
| 基金项目:山东省自然科学基金资助项目 ( Q 99F 15 ) |
| 王新堂 王者静 |
宁波大学建筑工程与环境学院土木系 宁波315211
(王新堂，徐永春)
，青岛建筑工程学院基础课部 青岛266033(王者静)
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| 中文摘要: |
| 基于已建立的拉索式平面预应力钢桁架基本理论 ,考虑到拉索刚度的随机性 ,得到了拉索式空间预应力钢桁架随机内力摄动分析的一般公式及敏度分析式 ,给出了空间预应力钢桁架随机内力统计特性计算表达式。为进一步进行空间预应力钢桁架可靠性分析奠定了一定的理论基础。最后针对工程中常见的三角形立体钢桁架 ,给出了算例 |
| 英文摘要: |
| On the basis of the fundamental computational theories of the cable prestressed planar steel truss established in paper , considering the randomness of the cable stiffness, the general formula for random internal force analysis of prestressed spatial steel truss with random cable stiffness are put forward and the formulas of sensitivity analysis are also presented. The computational models presented here has laid a theoretic foundation for further reliability analysis of the three dimensional prestressed steel trusses. Finally, the computational examples are put forward for the triangular spatial steel trusses widely used in engineering. |
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