| 格构梁刚度及地基变形模量对格构梁弯矩的影响研究 |
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| 引用本文： | 王志俭,万诚,赵家成. 格构梁刚度及地基变形模量对格构梁弯矩的影响研究[J]. 三峡大学学报(自然科学版), 2012, 34(2): 50-53 |
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| 作者姓名： | 王志俭 万诚 赵家成 |
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| 作者单位： | 三峡大学三峡库区地质灾害教育部重点实验室,湖北宜昌,443002 |
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| 基金项目： | 三峡库区三期地质灾害高切坡防护工程技术科研项目;三峡大学博士启动基金资助项目(0620080084) |
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| 摘 要： | 锚杆格构作为一种新型支护系统,广泛应用于地质灾害防治中,格构梁内力计算没有规范的计算方法.利用FLAC软件研究地基变形模量E0、格构梁弹性模量E及格构梁惯性矩I三个参数对格构梁内力影响,发现格构梁最大正弯矩随地基变形模量E0的增加而减小,随格构梁E和I的增加而增大.进一步分析得出,地基弹性模量与格构梁刚度的比值λ=E0/EI是影响格构梁内力的一个重要影响因素,在其他条件相同的情况下,格构梁弯矩值与λ值一一对应.
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| 关 键 词： | 格构 弯矩 相对刚度 |
Effects of Lattice Beam Stiffness and Foundation Deformation Modulus on Lattice Beam Bending Moment |
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| Wang Zhijian , Wan Cheng , Zhao Jiacheng. Effects of Lattice Beam Stiffness and Foundation Deformation Modulus on Lattice Beam Bending Moment[J]. Journal of China Three Gorges University(Natural Sciences), 2012, 34(2): 50-53 |
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| Authors: | Wang Zhijian Wan Cheng Zhao Jiacheng |
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| Affiliation: | Wang Zhijian Wan Cheng Zhao Jiacheng(Key Laboratory of Geological Hazards in Three Gorges Reservoir Area,Ministry of Education,China Three Gorges Univ.,Yichang 443002,China) |
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| Abstract: | Anchor lattice is widely applied to the control of geological disaster as a new support system;but there is no standard method to calculate internal forces of lattice.The effects of foundation deformation modulus E0,lattice beam elastic modulus E and moment of inertia of lattice beam I on the internal force of lattice beam are investigated with the fast Lagrangian analysis of continua(FLAC) software.The results show that the maximum bending moment of lattice beam will decrease with the increase of E0 while EI will promote the growth of it.Further analysis indicates that the ratio λ=E0/EI of modulus of foundation deformation and the stiffness of lattice beam is a key factor for the internal force in lattice beam;and there is a one-to-one correspondence between the bending moment of lattice beam and λ when the other conditions keep constant. |
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| Keywords: | lattice bending moment relative stiffness |
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