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Analysis and Research of the Lateral Distribution Factors of Large-segment Prefabricated T-Girder with Corrugated Steel Webs
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[1]ZHANG Tianhang,ZHANG Jianxun,WAN Ershuai.Analysis and Research of the Lateral Distribution Factors of Large-segment Prefabricated T-Girder with Corrugated Steel Webs[J].Journal of Zhengzhou University (Engineering Science),2021,42(06):107-112.[doi:10.13705/j.issn.1671-6833.2021.04.026]
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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 42 Number of periods: 2021 06 Page number: 107-112 Column: Public date: 2021-11-10
Title:
Analysis and Research of the Lateral Distribution Factors of Large-segment Prefabricated T-Girder with Corrugated Steel Webs
Author(s):
ZHANG Tianhang1;  ZHANG Jianxun2;  WAN Ershuai1
School of Water Conservancy and Engineering, Zhengzhou University; Institute of Traffic Planning and Design of Zhengzhou City;
Keywords:
CLC:
-
DOI:
10.13705/j.issn.1671-6833.2021.04.026
Abstract:
In order to explore the load lateral distribution of the new structure composite T-girder bridge with corrugated steel web, a 60-meter-span large-segment prefabricated composite T-girder bridge with corrugated steel web was used for engineering design. A finite element model was established based on ANSYS to study the influence of the structural form and spacing of the diaphragm on the lateral load distribution, and to determine the most optimal layout, the finite element method was compared with the traditional lateral distribution calculation methods. The results showed that the transverse diaphragms of the three structural forms could reduce the peak value of the vertical mark value of the influence line of the load lateral distribution to a certain extent, and make the influence line of the load lateral distribution more smooth. The stiffness difference between the X-shaped steel truss diaphragm and the V-shaped steel truss diaphragm was very small, and the former was slightly higher than the latter. The steel plate type diaphragm improved the lateral load distribution most obviously. For the side beam, the load lateral distribution factors under the three structural forms were all less than 1% lower than that without the diaphragm, and the load lateral distribution factors of the center beam was reduced by 3.2% at the maximum compared with the case without the diaphragm. The lateral load distribution factor of the side beam under the action of the X-shaped steel truss was slightly better than the lateral load distribution factor under the action of the V-shaped steel truss, while the center beam was the opposite. The change of the interval of the diaphragm under the same structure had little effect on the influence line of the load lateral distribution. It was recommended to choose V-shaped steel trusses with an interval of 10 meters as the diaphragm. The rigid connected beam method was suitable to calculate the composite T-beam with corrugated steel webs. The difference between the lateral distribution factor of the side girder and the finite element method was about 6.92%, and the difference between the middle girder and the finite element method was about 1.22%.
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