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Abstract

To address the complexity and lack of practical methods for calculating bending moments of cast-in-place cover slabs in slab culverts,the slabs were simplified as one-way slabs with a pair of opposing edges simply supported and the other pair of edges free.Theoretical formulas for calculating the bending moments within the slabs under uniformly distributed loads were derived using elastic theory.The accuracy of the theoretical formulas was validated through case studies via finite element software.Various combinations of length,width,and fill heights exist in highway projects,making the use of theoretical formulas for bending moment calculations cumbersome.Therefore,a simplified method for calculating maximum bending moments in both primary and secondary directions was proposed for reinforcement design,and three reinforcement recommendations were provided based on engineering practices.This study can provide a basis for engineering design of cast-in-place cover slabs in slab culverts.

Publication Date

12-24-2025

DOI

10.14048/j.issn.1671-2579.2025.06.020

First Page

174

Last Page

179

Submission Date

December 2025

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