A new 3-D element formulation on displacement of steel-concrete composite box beam

Zhou, Lang; Yu, Zhenkun; He, Guoqiu

doi:10.1007/s11771-013-1622-8

Cited by 5 publications

(4 citation statements)

References 20 publications

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“…Tables 1 to 4 show comparisons of the natural frequency calculation results using the FBEM and ANSYS models. R T refers to the calculation result obtained from the analytical solution proposed by Zhou et al (2013). R AN refers to the calculation result obtained from ANSYS; R FB refers to the calculation result obtained from FBEM considering both the shear lag, shear deformation, and slip; R SL refers to the calculation result without considering the shear lag; R SD refers to the calculation result without considering the shear deformation; R E refers to the calculation result without considering both the shear-lag and shear deformation effects.…”

Section: Analysis Of Calculation Examplesmentioning

confidence: 99%

Natural vibration analysis of steel–concrete composite box beam using improved finite beam element method

Jiang

Lai

Zhou

et al. 2017

Advances in Structural Engineering

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Based on Hamilton's principle and a cubic Hermite polynomial shape function, first the improved steel-concrete composite box beam element stiffness and mass matrixes with a few numbers of degree were derived by considering many influencing factors such as interface slip, shear lag, shear deformation, and rotational inertia, and then the finite beam element method program was established. The natural vibration frequencies of many steel-concrete composite box beam calculation samples with different spans, degrees of shear connection, and boundary conditions were calculated. The analysis results show that the finite beam element method calculation results are consistent with ANSYS' calculation, thus demonstrating the rationality and validity of the improved steel-concrete composite box beam element stiffness and mass matrixes proposed in this study. Moreover, some meaningful conclusions to engineering design were drawn as follows: The effect of shear lag increases with the order of steel-concrete composite box beam's natural vibration frequency and degree of shear connection. Shear deformation also increases with the order of steel-concrete composite box beam's natural vibration frequency; thus, the shear deformation corresponding to the steel-concrete composite box beam's highorder natural vibration frequency cannot be ignored. The interface slip of steel-concrete composite box beam's high-order natural vibration frequency is negligible; however, the interface slip of steel-concrete composite box beam's low-order natural vibration frequency cannot be ignored.

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Section: Analysis Of Calculation Examplesmentioning

confidence: 99%

Natural vibration analysis of steel–concrete composite box beam using improved finite beam element method

Jiang

Lai

Zhou

et al. 2017

Advances in Structural Engineering

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show abstract

“…where v denotes the structure's natural vibration frequency and f denotes the initial phase. Substituting equation (38) into equation ( 37) leads to…”

Section: Calculation Of the Natural Vibration Frequency Of A Twbgmentioning

confidence: 99%

Improved finite beam element method for analyzing the flexural natural vibration of thin-walled box girders

Jiang

Lai

Zhou

2017

Advances in Mechanical Engineering

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This study establishes the improved element stiffness and mass matrices of the thin-walled box girder, using a cubic Hermite polynomial shape function and based on an improved displacement function for shear-lag warping meeting the axial equilibrium condition of shear-lag warping stress and the consistency requirements of the displacement function. The improved thin-walled box girder element comprehensively considers multiple influencing factors, such as the thinwalled box girder shear-lag effect, shear deformation, and rotational inertia. The element shape function has first-order continuity at the element interface and satisfies the calculation precision with relatively few degrees of freedom. A finite beam element method program that can be used to calculate the natural vibration frequencies of thin-walled box girders was compiled based on the improved thin-walled box girder element. This program was used to calculate the natural vibration frequencies of many thin-walled box girder samples with different span-width ratios, span-height ratios, and boundary conditions. After comprehensively considering the influencing factors, the calculation results obtained from finite beam element method are in good agreement with those obtained from an ANSYS finite element calculation, thus demonstrating the rationality and validity of the improved thin-walled box girder element stiffness matrix and mass matrix proposed in this study. Finally, factors influencing the thin-walled box girder shear-lag effect and shear deformation were analyzed, providing relevant reference for project designers.

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“…Steel-concrete composite girder cable-stayed bridge structure is complex, especially the use of steel-concrete composite beam structure, make the stress more complex of this type of cable-stayed bridge [1]. Due to reduce the dead weight of beams, the distribution of internal force of the whole bridge is complicated, need to set the weight of small side span beam, prevent side span girder in the cable under the action of the arch is too large, resulting in concrete bridge decks subjected to tension stress [2]. With the increase of span, the flexibility of the whole bridge becomes larger, and the steel concrete composite girder cable-stayed bridge becomes sensitive to dynamic response.…”

Section: Introductionmentioning

confidence: 99%

Study on Static and Dynamic Characteristics Analysis of Long Span Steel Concrete Composite Beam Cable-stayed Bridge

Tian¹,

Liang²,

Jin³

2017

Proceedings of the 2017 6th International Conference on Energy, Environment and Sustainable Development (ICEESD 2017)

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Abstract. The Gangjiang No.2 Bridge is studied as the research object. The three-dimensional finite element bridge model is established with ANSYS 15.0 about static and dynamic characteristics of the bridge. The main girder and the main tower stress have enough safety storage, which can meet the specification requirements. The results show that the first order of the bridge vibration period is 4.2158s,which is small to the general cable-stayed bridge. But the girder vertical bending, distortion occurs earlier than the steel -concrete cable-stayed bridge with high integral rigidity. It is sensitive to wind load, seismic force.

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A new 3-D element formulation on displacement of steel-concrete composite box beam

Cited by 5 publications

References 20 publications

Natural vibration analysis of steel–concrete composite box beam using improved finite beam element method

Natural vibration analysis of steel–concrete composite box beam using improved finite beam element method

Improved finite beam element method for analyzing the flexural natural vibration of thin-walled box girders

Study on Static and Dynamic Characteristics Analysis of Long Span Steel Concrete Composite Beam Cable-stayed Bridge

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