Cracking Analysis of Pre-stressed Steel–concrete Composite Girder at Negative Moment Zone

Hu, Zhijian; Shah, Yasir Ibrahim; Yu, Shanli

doi:10.1007/s13369-021-05539-1

Cited by 9 publications

(2 citation statements)

References 17 publications

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“…Tensile test of steel bar was carried out according to the relevant provision (GB1499.2-2018). Hot-rolled Ribbed Bar (HRB400Φ16 and Φ12) steel bars with the yield strength of 570 MPa, 525 MPa, and ultimate strength of 705 MPa, 645 MPa, respectively were used in this study tensile test of steel bar is provided in the author's previous work (Hu et al, 2021a(Hu et al, , 2021b. The high-strength mortar used in this study had a compressive strength of 80.5 MPa, and the elastic modulus was 40 GPa.…”

Section: Parameters Of the Test Specimenmentioning

confidence: 99%

Interface bond strength performance of overlap joints within the corrugated pipes used in prefabricated bridges

Shah

Yao

2022

Advances in Structural Engineering

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This paper presents an experimental study of a novel composite structure used in prefabricated bridges. Corrugated pipes were used to improve the interface bond performance of the structure because of their excellent stiffening effect on the grouting material. Interface bond performance of overlap joints within corrugated pipes was explored by the load-displacement curve and load-strain curves. Ultra-High Performance Concrete (UHPC) and high-strength mortar were used as grouting materials. The diameter of steel bars, UHPC, high-strength mortar, strength grades of surrounded concrete, anchorage length, the diameter of the corrugated pipe, and lap length was taken as influential factors. Twenty specimens were designed for the pull-out test by using a larger cover thickness. The failure modes and the influence of different influential factors on the interface bond strength of each specimen were analyzed. The results show that the bond performance between UHPC and reinforcement was better than that of high-strength mortar and normal concrete, which can effectively improve the bond strength and reduce the basic anchorage length of reinforcement besides the design size of prefabricated members. In addition, the differences in anchorage length and lap length between the corrugated pipe grouting reinforcement were compared to the different specifications and prefabricated concrete members. Combined with the test phenomenon and analysis results, it is suggested that the anchorage length and lap length of connecting reinforcement should be reconsidered. Furthermore, the grouting effect under different diameters of corrugated pipe and reinforcement were compared. It is recommended that the corrugated pipe diameter should be four times that of the overlapping grouting reinforcement.

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Section: Parameters Of the Test Specimenmentioning

confidence: 99%

Interface bond strength performance of overlap joints within the corrugated pipes used in prefabricated bridges

Shah

Yao

2022

Advances in Structural Engineering

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“…The deflection calculation method was improved based on the original equivalent cross-section to calculate the stiffness, which has a high accuracy for the deflection calculation of cast-in-place stud composite beams. In the literature [19][20][21][22][23][24][25][26], a new technique of uplift-restricted and slip-permitted is proposed. It was shown that improvements to shear connectors can greatly improve the cracking of concrete without changing the stiffness and ultimate bearing capacity of the specimen.…”

Section: Introductionmentioning

confidence: 99%

Study on the Mechanical Performance of H-Shaped Steel-Concrete Laminated Plate Composite Beams under Negative Bending Moment

Liu

Ding

2022

Sustainability

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To make the construction of assembled steel-reinforced truss concrete laminated plate composite structure faster, safer, and more efficient, this paper proposes an H-shaped steel-reinforced truss concrete laminated plate composite structure with new angle connectors embedded in the precast bottom panel. Through experimental studies on the H-shaped steel-concrete laminated plate composite beams with precast bottom panels protruding from the bent-up bars, precast bottom panels with embedded new angle connectors and laminated whole cast slab, the similarities and differences of load-deflection, deflection distribution, interface slip, crack distribution and cross-section strain distribution of three groups of composite beams under negative bending moment were analyzed and compared. Using ABAQUS finite element software, we established a finite element model and found the numerical simulation results were in good agreement with the experimental results. Based on this, six groups of finite element models were established for parametric analysis to investigate the effect of concrete strength on the flexural load capacity and flexural stiffness of the steel-laminated plate composite beams with embedded angle connectors. The results of the study show that the combined performance of the H-shaped steel-concrete laminated plate composite beams with the new angle connection embedded in the precast bottom panel was better and the flexural stiffness was greater. The slippage of the H-shaped steel-concrete laminated plate composite beams with embedded new angle connectors in the precast bottom panel was less than the slippage of the precast bottom slab bent-up bars protruding and the laminated cast plate, with the maximum slippage being only 1/2 of the precast bottom panel bent-up bars protruding. In the composite structure of H-shaped steel-concrete composite slabs under negative bending moment, shear angle connectors can replace the bent-up bars protruding from the laminated bottom panel to achieve without extending the reinforcement of the laminated bottom panel.

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Simplified Method for Lateral Distribution Factor of the Live Load of Prefabricated Concrete Box-Girder Bridges with Transverse Post-tensioning

Shah

2022

KSCE J Civ Eng

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Cracking Analysis of Pre-stressed Steel–concrete Composite Girder at Negative Moment Zone

Cited by 9 publications

References 17 publications

Interface bond strength performance of overlap joints within the corrugated pipes used in prefabricated bridges

Interface bond strength performance of overlap joints within the corrugated pipes used in prefabricated bridges

Study on the Mechanical Performance of H-Shaped Steel-Concrete Laminated Plate Composite Beams under Negative Bending Moment

Simplified Method for Lateral Distribution Factor of the Live Load of Prefabricated Concrete Box-Girder Bridges with Transverse Post-tensioning

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