| 基于正交分析的双面组合连续箱梁剪力滞效应影响因素研究 |
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| 引用本文： | 王喜盈,段树金.基于正交分析的双面组合连续箱梁剪力滞效应影响因素研究[J].石家庄铁道学院学报,2012(1):25-29,57. |
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| 作者姓名： | 王喜盈 段树金 |
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| 作者单位： | 石家庄铁道大学土木工程学院,河北石家庄050043 |
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| 基金项目： | 河北省科技支撑计划（09215625D） |
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| 摘 要： | 考虑宽跨比、截面高度、翼缘板外伸长度、荷载类型等影响剪力滞效应的主要因素,采用正交分析方法对钢-混凝土双面组合连续箱梁进行试验设计,对设计工况进行数值仿真试验,并对计算结果进行正交分析。研究结果表明,荷载形式对双面组合箱梁剪力滞系数的影响最大,宽跨比的影响次之,而截面几何尺寸的因素如截面高度和翼缘板外伸长度在工程实用范围内的影响很小。通过统计回归,得到了弹性阶段钢-混凝土双面组合连续箱梁上翼缘有效宽度的无量纲计算公式。
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| 关 键 词： | 双面组合连续箱梁 剪力滞效应 翼缘有效宽度 正交分析 |
A Study of Shear Lag Effect Influencing Factors in Double Steel-concrete Composite Continuous Box Girder Based on Orthogonal Analysis Method |
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| Wang Xiying,Duan Shujin.A Study of Shear Lag Effect Influencing Factors in Double Steel-concrete Composite Continuous Box Girder Based on Orthogonal Analysis Method[J].Journal of Shijiazhuang Railway Institute,2012(1):25-29,57. |
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| Authors: | Wang Xiying Duan Shujin |
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| Institution: | (School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China) |
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| Abstract: | The shear lag effect is determined by many factors,such as wide-span ratio,section height,flange overhang length,load type,and so on.The test specimens of double steel-concrete composite box girder are designed by orthogonal method.Then the numerical simulations are carried out according to different test conditions,and the results are orthogonally analyzed.It indicates that load type has the most significant influence to shear lag effect,followed by wide-span ratio,and section height and flange overhang length with very minor influence in engineering practice.The dimensionless formula of flange effective width is obtained for the double steel-concrete composite continuous box girder in elastic stage througn statistical regression. |
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| Keywords: | double composite continuous girder shear lag effect flange width orthogonal analysis |
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