Shear lag effect of composite cable-stayed bridges under dead and live loads

Article Engineering, Civil

Shear lag effect of composite girders in cable-stayed bridges under dead loads

Chun-Sheng Wang et al.

Summary: The shear lag effect of the concrete slab is a critical issue in composite girders of large-span cable-stayed bridges. This study conducted in-situ stress monitoring and numerical modeling analysis on a cable-stayed bridge to investigate the impact of the shear lag effect on stress distribution. Factors affecting the shear lag effect were also examined. The results highlight the critical sections for analyzing the shear lag effect and identify cable spacing and slab width as the main influencing factors.

ENGINEERING STRUCTURES (2023)

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Article Engineering, Civil

Numerical simulation and simplified calculation of the effective slab width for composite cable-stayed bridges

Gain Felice Giaccu et al.

Summary: With the increase in complexity of structures, the simultaneous presence of axial forces and bending on bridge decks is becoming more common and concerning. Design codes currently do not adequately address this aspect, which can lead to design complications. This study proposes a simple methodology for the design and verification of a girder composite deck subjected to combined compression and bending, based on parametric study performed using finite element models.

STRUCTURES (2022)

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Article Engineering, Civil

Shear lag effect of twin I-shaped composite girders in cable-stayed bridges

Chun-Sheng Wang et al.

Summary: This study investigates the shear lag effects in composite girders of a cable-stayed bridge under different loading conditions. Differential equations are used to establish the governing equations for the composite girder. A finite segment model, considering the slip effect, is developed based on the solutions of the differential equations. The applicability of the model is calibrated with experimental results. The key factors controlling the effective slab width in composite cable-stayed bridges are analyzed through a full-scale parametric study.

THIN-WALLED STRUCTURES (2022)

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Article Construction & Building Technology