Distortional analysis of simply supported box girders with inner diaphragms considering shear deformation of diaphragms using initial parameter method

Ren, Yiru; Cheng, Wenming; Wang, Yuanqing; Chen, Qingrong; Wang, Bin

doi:10.1016/j.engstruct.2017.05.004

Cited by 24 publications

(18 citation statements)

References 14 publications

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“…Correspondingly, two additional assumptions are made to involve the out-of-plane forces and deformations for all diaphragms, besides the assumptions of self-balance and compatibility conditions for the in-plane redundant force components (Ren et al, 2017a, 2017b).…”

Section: Ipm For Girder With Inner Solid Diaphragmsmentioning

confidence: 99%

“…P ( z – z i ) and P ( z – z j ) are the matrices obtained from P ( z ) by substituting from variable z to “ z – z i ” and “ z – z j .” P ( z ) is the transformed matrix of distortional parameters from the initial end to the given cross-section, derived from distortional differentiate equation (Ren et al, 2017a, 2017b), given by…”

Section: Ipm For Girder With Inner Solid Diaphragmsmentioning

confidence: 99%

“…While for girder with inner diaphragms, the key point is how to insert the diaphragms into IPM solutions in distortion. On the assumptions of in-plane self-balance for diaphragms and the compatibility condition between the girder and diaphragms, the effect of diaphragms on girder is equivalently transferred to a moment M pi , and IPM solutions for distortion are finally gotten (Ren et al, 2017a(Ren et al, , 2017b. However, in this process, the out-of-plane deformation for diaphragm is ignored and the compatibility in longitudinal direction between the girder and diaphragms is not considered in IPM solutions.…”

Section: Introductionmentioning

confidence: 99%

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New research for the distortion of steel box girders with inner solid diaphragms

Ren

Wang

et al. 2019

Advances in Structural Engineering

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Toward estimating accurately the distortional response of box girders, in this article, distortion of steel box girders strengthened with intermediate solid diaphragms under eccentric loads is analyzed by employing the so-called initial parameter method. A new model of high-order statically indeterminate structure was established with three orthogonal redundant forces acting at the junction between the girder and diaphragms. Emphasis is put onto the interaction between the girder and diaphragms, where a hypothetical bi-moment B pi indicating all longitudinal redundant force components for diaphragm was proposed besides the moment Mpi for in-plane shear component. Simplified initial parameter method solutions for distortional angle and distortional warping stresses and displacements were derived based on the in-plane and out-of-plane compatibilities between the girder and diaphragms. Taking box girders with three and five intermediate diaphragms as an example, the proposed initial parameter method solutions have good agreement with the finite element analysis ones. Finally, distortional behavior under moving eccentric loads is investigated, resulting in a bowl-shaped curve for moment Mpi and an approximate trigonometric function for bi-moment Bpi. Results show that diaphragms have a stronger resistance on in-plane distortional shear for the loads in midspan than on ends. Plus, the thick diaphragm holds a stronger restraint on distortional warping deformations and stresses than the thin one.

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Section: Ipm For Girder With Inner Solid Diaphragmsmentioning

confidence: 99%

Section: Ipm For Girder With Inner Solid Diaphragmsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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New research for the distortion of steel box girders with inner solid diaphragms

Ren

Wang

et al. 2019

Advances in Structural Engineering

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“…Many numerical researches were developed in the literature highlighting the structural behavior of different kinds of steel bridges subjected to different boundary conditions and loadings [1][2][3][4][5][6][7] .The numerical researches proposed finite element models for the analysis of steel girder which were developed to provide better analyses and understanding for the behavior and stability of different steel girders [8].…”

Section: Introductionmentioning

confidence: 99%

“…Ren et al [3] assessed the distortion of girders (simply supported withiinner diaphragms) by applying concentrated eccentric loads using the initial parameter method (IPM).…”

Section: Introductionmentioning

confidence: 99%

Optimum Design of Steel Trapezoidal Box-Girders Using Finite Element Method

Mohammed¹,

Abdul-Razzaq²

2018

IJET

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The target of basic plan is to choose part sizes with the ideal proportioning of the in general auxiliary geometry. Regular steel trapezoidal box-supports have been utilized generally in different designing fields. The target of this examination is to create three-dimensional limited component display for the size improvement of steel trapezoidal box-braces. The limited component programming bundle ANSYS was utilized to decide the ideal cross segment measurement for the steel trapezoidal-box support. Two target capacities were considered in this investigation which are: minimization of the strain vitality and minimization of the volume. The plan factors are the width of the best spine, the width of the base rib, the thickness of the best rib, the thickness of the base rib, the stature of the support and the thickness of the networks. The imperatives considered in this examination are the ordinary and shear worry in steel brace and the dislodging at mid-length of the support. Improvement consequences of steel brace show that the ideal territory of cross segment for the strain vitality minimization is more noteworthy than the ideal for volume minimization by 6 %. The base cross area is the financial structure, hence the volume minimization is more pertinence for steel brace advancement.

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Dynamic Analysis of Composite Curved Beams with Intermediate Diaphragms

Tsiptsis

Sapountzaki

2020

Lecture Notes in Mechanical Engineering

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Distortional analysis of simply supported box girders with inner diaphragms considering shear deformation of diaphragms using initial parameter method

Cited by 24 publications

References 14 publications

New research for the distortion of steel box girders with inner solid diaphragms

New research for the distortion of steel box girders with inner solid diaphragms

Optimum Design of Steel Trapezoidal Box-Girders Using Finite Element Method

Dynamic Analysis of Composite Curved Beams with Intermediate Diaphragms

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