| 地下杆系结构分析中的弹性地基抗扭计算 |
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| 引用本文： | 冯紫良,冯义鹏.地下杆系结构分析中的弹性地基抗扭计算[J].同济大学学报(自然科学版),2002,30(4):399-402. |
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| 作者姓名： | 冯紫良 冯义鹏 |
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| 作者单位： | 同济大学地下建筑与工程系,上海,200092 |
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| 摘 要： | 在材料力学假设和文克勒假定的条件下，推导了地下杆系结构的弹性地基扭转抗力系数的计算公式，依据该计算公式推导了弹性地基的有限元刚度贡献，并以有限元方法编制了计算程序。通过具体的工程实例及其结果分析（内力、位移），说明了弹性地基的抗扭作用，以及计算程序对于工程应用的意义。
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| 关 键 词： | 地下杆系结构 分析 弹性地基 抗扭计算 |
| 文章编号： | 0253-374X(2002)04-0399-04 |
| 修稿时间： | 2001年10月26 |
On Twisting Resistance of Elastic Foundation and Its Application to Underground Structures |
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| FENG Zi-liang,FENG Yi-peng.On Twisting Resistance of Elastic Foundation and Its Application to Underground Structures[J].Journal of Tongji University(Natural Science),2002,30(4):399-402. |
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| Authors: | FENG Zi-liang FENG Yi-peng |
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| Abstract: | Based on the generalized Winkler hypothesis and material strength,analytic method of twisting resistance of elastic foundation is deduced for 3-D beam structures.A formula is derived especially for the rod with circle and rectangle outline of cross section.Furthermore,the rigidity express contributed by twisting resistance of elastic foundation is also derived according to FEM theory.A program of 3-D rod structure system with various elastic foundations is then developed.A compution example of tunnel engineering is given and some conclusions are finally summarized. |
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| Keywords: | elastic foundation twisting resistance underground structure finite element |
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