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- W779032218 abstract "A simplified theory is developed for the analysis of straight box girder bridges. A box girder bridge is divided longitudinally into a finite number of segments and then each segment is decomposed into sever rectangular plate elements by cutting it laterally. Elemental rectangular plates are connected each other at their joints located at the center of each longitudinal side of the element to form a segment. Segments are interconnected at the joints located at the midpoint of each transverse side of the element to form a girder. The element stiffness matrix is formulated on the basis of the ordinary beam theory under the assumption that the stresses in an element are distributed varied linearly along sides of the element. Therefore the stiffness matrix in this theory is obtained without using the shape function and the numerical integration which are necessary in the conventional finite element method. A computer program has been written in Fortran language based on this theory A continuous box girder bridge is analyzed to verify the validity and accuracy of this theory The results for the deflections, longitudinal girder moments, and transverse slab moments are compared with those obtained by other methods. Concering the total girder moments, the method developed here in shows good agreement with the folded plate method which generally gives more accurate results than the finite element method or the finite segment method for the same degree of mesh refinement. The deflections and thd transverse slab moments obtained by present theory are slightly smaller in magnitude than those by FEM. The special feature of the theory lies in the fact that it greatly reduces the computer time for the same degree of mesh refinement without losing the accuracy. This theory may, therefore, be directly used as an efficient tool to analyze and design straight box girder bridges subjected to arbitrary loading." @default.
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- W779032218 date "1997-01-01" @default.
- W779032218 modified "2023-09-23" @default.
- W779032218 title "Analysis of Box Girders by the use of Simplized Plate Elements" @default.
- W779032218 hasPublicationYear "1997" @default.
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