Seismic study of a widened and reconstructed long-span continuous steel truss bridge

Xu, Yan; Zeng, Zeng; Wang, Zhen; Yan, Hai

doi:10.1080/15732479.2020.1733621

Cited by 10 publications

(6 citation statements)

References 16 publications

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“…In modern times, continuous rigid-frame bridge combines the characteristics of T-shaped structure and continuous beam bridge, which meets the development of modern bridge construction [3]. Additionally, high piers are used in the process of bridge construction to adapt to the deformation caused by factors such as prestress of bridge superstructure and shrinkage and creep of concrete [4]. When there are influences of hydrogeological and other natural environments on the construction process of continuous rigid-frame bridge, it is necessary to design a short-pier bridge for the large-span continuous rigid-frame bridge structure and to study and analyze the actual stress of the continuous rigid-frame bridge structure [5].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Buckling Mode and Buckling Stability Coefficient of Rigid-Frame Bridge during Construction in Cold Region

Zhang²,

Wang

2022

Geofluids

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The study aims to further standardize the construction process, improve the construction quality, and ensure the stability of infrastructure construction. The continuous rigid-frame bridge is taken as the research object, the finite element model of the bridge body is established by using the beam element, and the overall stability of the rigid-frame bridge is analyzed in the construction and completion stages. Moreover, the stability coefficient and buckling mode are established under different working conditions in each stage, the linear stability variation law is summarized, and the geometric nonlinear stability analysis method is established through the specific data. The nonlinear stability safety factor and buckling mode are obtained, and the influence of wind load and initial defects on the stability of continuous rigid-frame bridge is further explored. The results show that with the increase of the bridge height, the overall stability factor of the bridge is decreasing, and the safety factor of the single-limb thin-walled hollow pier is relatively larger than that of the double-limb thin-walled hollow pier. During the construction, the asymmetric self-weight load caused by the asynchronous load and cantilever pouring has the greatest impact on the stability of the bridge. The stability safety factor of the geometric nonlinear stability analysis method constructed is 0.3% and 1.27% lower than the ideal state, respectively. The stability safety factor of the wind load and the initial defect is 12.65% lower than the ideal state, and the stability safety factor is greatly reduced. The results have important reference significance to ensure the construction safety and overall stability of the bridge.

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Section: Introductionmentioning

confidence: 99%

The Influence of Buckling Mode and Buckling Stability Coefficient of Rigid-Frame Bridge during Construction in Cold Region

Zhang²,

Wang

2022

Geofluids

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“…Pile foundations are commonly adopted to support structures in civil, coastal and offshore engineering, etc. Longitudinal vibration of piled structures due to vertical ground motion of earthquake, traffic and vibrating machinery is of great practical engineering significance for dynamic foundation design, earthquake-resistance design and pile dynamic testing [1][2][3]. Hence, the studies of *Manuscript Click here to view linked References longitudinal vibration of pile have attracted extensive attention in recent decades [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

A new approach for longitudinal vibration of a large-diameter floating pipe pile in visco-elastic soil considering the three-dimensional wave effects

Meng

Cui

Liang

et al. 2020

Computers and Geotechnics

153

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A novel approach is presented to describe the dynamic interaction system of a large-diameter floating pipe pile and surrounding soils, taking the three-dimensional wave effects into account. The corresponding analytical solutions for longitudinal complex impedance are obtained and subsequently validated via comparisons with existing solutions. Comparative analyses are also performed to illustrate the difference between the present and previous solutions, concerning the wave propagation effect in the radial direction on the longitudinal dynamic vibration of pile shaft. Furthermore, the effects of Poisson's ratio and visco-elastic support beneath the pile toe, on the longitudinal dynamic vibration of pile shaft, are investigated. It is indicated that the presented approach and corresponding solutions provide a more wideranging application for longitudinal vibration analysis of a largediameter floating pipe pile, which can also be reduced to analyze the longitudinal vibration problems of large-diameter floating solid pile and fixed-end pipe pile.

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“…Structures such as bridges, tall buildings, and offshore platform often have piles as foundations that experience dynamic loads from traffic, earthquakes, and mechanical oscillations. The dynamic response of pile-soil interactions has always been a hot topic in research fields of geotechnical engineering and soil dynamics; it has great reference value and guidance for pile dynamic detection, earthquake-resistance design, and dynamic foundation design [1][2][3]. Many approaches for the dynamic interaction systems of pile-soil vibration have been proposed by many scholars in which the soil is commonly considered to be radially homogeneous [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

New Analytical Solutions for Longitudinal Vibration of a Floating Pile in Layered Soils with Radial Heterogeneity

et al. 2020

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Based on the theory of wave propagation in three-dimensional (3D) continuum, a new analytical approach for the longitudinal vibration characteristics of a floating pile in layered soils with radial heterogeneity is developed by employing a viscous-type damping model. Firstly, an analytical solution for the longitudinal complex impedance at the pile head is deduced by employing the Laplace transform and complex stiffness technique with the compatibility conditions of the pile and radially inhomogeneous surrounding soil. Secondly, a semi-analytical solution in the time domain is further acquired by using the inverse Fourier transform method. Furthermore, the corresponding analytical solutions are validated through contrasts with previous solutions. Finally, parametric analyses are underway to investigate the effect of radial heterogeneity of surrounding soils on longitudinal vibration characteristics of floating piles. It is indicated that the proposed approach and corresponding solutions can provide a more wide-ranging application than the simple harmonic vibration for longitudinal vibration analysis of a floating pile in soils.

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Seismic study of a widened and reconstructed long-span continuous steel truss bridge

Cited by 10 publications

References 16 publications

The Influence of Buckling Mode and Buckling Stability Coefficient of Rigid-Frame Bridge during Construction in Cold Region

The Influence of Buckling Mode and Buckling Stability Coefficient of Rigid-Frame Bridge during Construction in Cold Region

A new approach for longitudinal vibration of a large-diameter floating pipe pile in visco-elastic soil considering the three-dimensional wave effects

New Analytical Solutions for Longitudinal Vibration of a Floating Pile in Layered Soils with Radial Heterogeneity

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