Analysis of Transverse Temperature Stress on Box Girder Roof with Corrugated Steel Webs
YAO Chen
LIU Guanzhi
ZHANG Feng
Abstract：To explore the horizontal stress on the roof of the composite bridge with corrugated steel webs under temperature field,the temperature gradient calculation formula of the composite bridge with corrugated steel webs is established based on a long-term observation of the temperature of composite bridge with corrugated steel webs.A space refinement numerical finite element model of the composite bridge with corrugated steel webs is established .The aspect ratio of composite girder bridge with corrugated steel webs , the ratio between the transverse flexural stiffness of the roof and the web and the maximum temperature in the temperature gradient are considered in the parameter analysis .The results show that the aspect ratio of box girder and the ratio of the transverse flexural stiffness present a logarithmic relationship with the transverse normal stress of the roof , and the maximum temperature has a linear relation with the transverse normal stress on the roof .The calculation formula of the transverse normal stress is established considering the above three parameters .The optimization algorithms are used in the parameter calibration of the formula .The correlation coefficient of the transverse normal stress on the roof through calculation formula and the fitting is 0 .995 .In this paper , the calculation formula can provide reference for the preliminary design of this type bridge .
Keywords：bridge engineeringcorrugated steel webbox girdertemperaturenumerical simulationparameter analysis
Publication Date：2016-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 58-63 )