Experimental studies on seismic behavior of precast hybrid steel–concrete beam

Zhang, Xizhi; Zhang, Shaohua; Niu, Sixin

doi:10.1177/1369433218796411

Cited by 9 publications

(4 citation statements)

References 17 publications

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“…The above results were consistent with the failure modes observed during the test, the use of smaller spacing of stirrups reduced damage to the plastic hinge region, thus enhancing the inelastic deformability. In general, for CFPHCCT1–7, the μ values gained in the test were ranged from 3.77 to 5.97, which achieved the demand of μ ≥ 3.0 for concrete members (Zhang et al, 2018b). Furthermore, based on the classification of ductility levels (Morrison et al, 2012), CFPHCCT columns have moderate (3.0 ≤ μ < 4.0) to high ( μ ≥ 4.0) levels of ductility.…”

Section: Test Results and Discussionmentioning

confidence: 94%

Seismic behavior of normal-strength concrete-filled precast high-strength concrete centrifugal tube columns

Zhang

et al. 2019

Advances in Structural Engineering

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This study reports the cyclic loading test results of normal-strength concrete-filled precast high-strength concrete centrifugal tube columns. Seven half-scale column specimens were tested under cyclic loads and axial compression loads to investigate their seismic behavior. The major parameters considered in the test included axial compression ratio, filled concrete strength, and volumetric stirrup ratio. The structural behavior of each specimen was investigated in terms of failure modes, hysteresis behavior, bearing capacity, dissipated energy, ductility, stiffness degradation, drift capacity, and strain profiles. Test results revealed that the concrete-filled precast high-strength concrete centrifugal tube column exhibited good integral behavior, and the failure modes of all columns were ductile flexural failures. Lower axial compression ratio and higher volumetric stirrup ratio resulted in more satisfactory ductile performance. In contrast, the filled concrete strength has a limited influence on the structural behavior of concrete-filled precast high-strength concrete centrifugal tube columns. Based on the limit analysis method, the calculation formula for the bending capacity of the concrete-filled precast high-strength concrete centrifugal tube column was developed, and the results predicted from the formulas were in good agreement with the experiment results.

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Section: Test Results and Discussionmentioning

confidence: 94%

Seismic behavior of normal-strength concrete-filled precast high-strength concrete centrifugal tube columns

Zhang

et al. 2019

Advances in Structural Engineering

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“…Qin carried out research on the optimal position of the steel-concrete joint section of the hybrid girder bridge through a parametric sensitivity analysis [19]. Zhang proposed a new type of connection form to facilitate the constructability of the steel-to-concrete connection and confirmed its good seismic behavior in precast hybrid steel-concrete girders [20]. He deduced a relationship between the optimal length of the steel-concrete connection and the length ratio of side span to main span [21], which was proved to be an efficient method for the preliminary design of hybrid girder bridges.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Testing of a Composite Steel–Concrete Joint for Hybrid Girder Bridges

Shangguan

Casas

et al. 2023

Materials

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A hybrid girder bridge adopts a steel segment at the mid-span of the main span of a continuous concrete girder bridge. The critical point of the hybrid solution is the transition zone, connecting the steel and concrete segments of the beam. Although many girder tests revealing the structural behavior of hybrid girders have been conducted by previous studies, few specimens took the full section of a steel–concrete joint due to the large size of prototype hybrid bridges. In this study, a static load test on a composite segment to bridge the joint between the concrete and steel parts of a hybrid bridge with full section was conducted. A finite element model replicating the tested specimen results was established through Abaqus, while parametric studies were also conducted. The test and numerical results revealed that the concrete filling in the composite solution prevented the steel flange from extensive buckling, which significantly improved the load-carrying capacity of the steel–concrete joint. Meanwhile, strengthening the interaction between the steel and concrete helps to prevent the interlayer slip and simultaneously contributes to a higher flexural stiffness. These results are an important basis for establishing a rational design scheme for the steel–concrete joint of hybrid girder bridges.

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“…Through on-site tests and numerical analysis, Li et al [23] evaluated the dynamic performance of a steel-concrete hybrid beam bridge with spread steel box beam under vehicle loads, and the results showed that the maximum impact coefficient of the bridge met the Chinese and American bridge design codes. Zhang et al [24] conducted an experimental study on hybrid beams from the perspective of seismic resistance and found that the failure mode of precast hybrid beams was different from that of precast concrete beams. Lu et al [25] carried out a finite element analysis on the fatigue performance of an important component of the joint, shear connectors.…”

Section: Introductionmentioning

confidence: 99%

A Study of the Mechanical Behavior of a Steel–Concrete Hybrid Beam Bridge during Construction

Pei

Jia

et al. 2023

Buildings

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To study the mechanical properties of steel–concrete joints during construction, the Mao Port Bridge in Shanghai is used as a case study. The mechanical properties of the bridge and the joint under the construction conditions were studied based on the site construction monitoring results, the finite element calculation of the entire bridge and the refined model of the joint. The results show that the finite element analysis of the bridge and the stress analysis of the joint during the construction phase agreed with the measured values, the end of block 0# of the main span remained in compression during construction and the compressive stresses varied in a zigzag pattern with the progress of construction. The lifting of the mid-span steel beam is a critical construction condition where the side spans of the girders are stretched upwards by 20.9 mm and the main spans are stretched downwards by 32.3 mm. When the steel beam was lifted, the joint was compressed as a whole. At the joint, the longitudinal stresses in the steel structure gradually decreased from the front bearing plate to the joint face, while the longitudinal stresses in the concrete structure gradually increased.

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Experimental studies on seismic behavior of precast hybrid steel–concrete beam

Cited by 9 publications

References 17 publications

Seismic behavior of normal-strength concrete-filled precast high-strength concrete centrifugal tube columns

Seismic behavior of normal-strength concrete-filled precast high-strength concrete centrifugal tube columns

Modeling and Testing of a Composite Steel–Concrete Joint for Hybrid Girder Bridges

A Study of the Mechanical Behavior of a Steel–Concrete Hybrid Beam Bridge during Construction

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