[1]王晨光,张元海.基于外荷载修正的箱形梁横向内力分析[J].东南大学学报(自然科学版),2021,51(1):23-29.[doi:10.3969/j.issn.1001-0505.2021.01.004] 　Wang Chenguang,Zhang Yuanhai.Transverse internal force analysis on box girder based on external load correction[J].Journal of Southeast University (Natural Science Edition),2021,51(1):23-29.[doi:10.3969/j.issn.1001-0505.2021.01.004] 点击复制 基于外荷载修正的箱形梁横向内力分析() 分享到： var jiathis_config = { data_track_clickback: true };

51

2021年第1期

23-29

2021-01-20

文章信息/Info

Title:
Transverse internal force analysis on box girder based on external load correction

Author(s):
School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China

Keywords:

U448.213
DOI:
10.3969/j.issn.1001-0505.2021.01.004

Abstract:
To reasonably calculate the transverse internal force of a thin-walled box girder under the eccentric load, the elastically supported girder theory was used to correct the external load acting on the frame. According to the coordination relationship between the deformation displacement of the box girder and the displacement of the frame, the basic formulas for calculating the transverse internal force of the box girder were derived by using a new calculation model satisfying the equilibrium conditions. The influence of the geometric parameters on the transverse internal force of the box girder was investigated. The results show that when the aspect ratio is less than 1.5, the transverse bending moments decrease obviously, and those away from the middle section of the span decay rapidly. However, when the aspect ratio is higher than 1.5, the decreasing degrees in the transverse bending moments are smaller, and the transverse bending moments remain basically unchanged in the most range of the span of the box girder. Compared with the results of finite element calculation, the calculation error of each cross section of the whole girder is less than 10%. The transverse bending moments calculated based on the modified external load have better accuracy than those by the generalized TYL frame method along the span direction.

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相似文献/References:

[1]王晨光,张元海.几何特性对薄壁箱梁畸变效应的影响[J].东南大学学报(自然科学版),2020,50(1):89.[doi:10.3969/j.issn.1001-0505.2020.01.012]
Wang Chenguang,Zhang Yuanhai.Influence of geometric characteristics on distortion effect of thin-walled box girders[J].Journal of Southeast University (Natural Science Edition),2020,50(1):89.[doi:10.3969/j.issn.1001-0505.2020.01.012]