Practical Evaluation Method for the Pouring Scheme of a Long‐Span Concrete‐Filled Steel Tube Arch Bridge

Yao, Xinyu; Hao, Tianzhi; Deng, Nianchun

doi:10.1155/2022/9019612

Cited by 1 publication

(1 citation statement)

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“…Yang et al [21] based on the analysis of the elastic buckling analysis method and elastic-plastic buckling analysis method of arch rib stability, proposed the optimization method of arch rib concrete pouring sequence, which takes the elastic stability safety factor during construction as the evaluation standard and the elastic-plastic stability analysis method for verification and verification. Yao et al [22] adopted the improved TOPSIS method, put forward a comprehensive objective function rationalization index by controlling five indicators of the concrete pouring sequence in the tube, and established a practical evaluation and determination method for the concrete pouring scheme in the tube of long-span concrete filled steel tube arch bridge. Pan et al [23] based on intelligent active load regulation technology, analyzed different pouring sequences with the maximum upper deflection of the arch crown, steel tube, and concrete stress as the control objectives.…”

Section: Introductionmentioning

confidence: 99%

Study on Reasonable Pouring Sequence of Concrete in Tube of Long Span CFST Arch Bridge

Zhou¹,

Wang²,

Ma³

et al. 2023

Preprint

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Concrete pouring in the tube is one of the key procedures in the construction of concrete-filled steel tube arch bridges. Different pouring schemes greatly impact the internal force, displacement, and stability of the arch rib, and even affect the safety of the bridge structure during operation. To explore a reasonable pouring sequence of concrete in the tube, based on the principle of structural potential energy, this paper proposes a method to use the potential energy of the arch rib under the condition of the main arch bridge as a quantitative index to evaluate the quality of the pouring sequence of concrete in the tube. Based on four concrete-filled steel tube arch bridges with spans of 340 ~ 575 m, the finite element program MIDAS/civil 2019 is used to establish the simulation analysis model of the bridge, and the potential energy of the arch rib under 24 perfusion schemes is analyzed. The results show that the arch rib structure is different, and the optimal pouring sequence is also different For the half-through concrete-filled steel tube arch bridge, the optimal pouring sequence is the outer side of the top chord — the inner side of the top chord — the outer side of the bottom chord — the inner side of the bottom chord; For the deck concrete-filled steel tube arch bridge, the optimal pouring sequence is the inside of the top chord — the outside of the bottom chord — the inside of the bottom chord — the outside of the top chord. The analysis results in this study can be used for reference for the construction of the same type of bridge.

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Section: Introductionmentioning

confidence: 99%