Comparative Study on the Axial Compression and Bearing Capacity of Reactive Powder Concrete‐Filled Circular Steel Tube

Chen, Mingyang; Hou, Xuyan

doi:10.1155/2018/8038649

Cited by 4 publications

(1 citation statement)

References 4 publications

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“…Ji et al (2018) examined the shear behavior of T-section RPC girders and derived a simplified formula for predicting their ultimate shear capacities. Chen and Hou (2018) proposed that the failure modes of the RPC-filled circular steel tube column under axial compression can be divided into wall buckling, diagonal shear, and drum-shaped type, and established a formula for determining the ultimate bearing capacity based on the limit equilibrium theory. Zhang Y et al(2020) proposed a new FRP-carbon steel composite tube column filled with seawater and sea sand concrete (SSC).…”

Section: Introductionmentioning

confidence: 99%

Axial compression capacity analysis of prefabricated steel reactive powder concrete columns in prefabricated modular buildings

Zhang

et al. 2022

Advances in Structural Engineering

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This article proposes a prefabricated steel reactive powder concrete (PSRPC) component. Axial compression tests are conducted with five 3m full-scale column specimens to investigate the specimen damage and failure process and to measure the axial displacement, strain and ultimate bearing capacity in order to study the influences of the RPC strength and the section steel flange thickness on the mechanical properties of the PSRPC. The tests show the following. The ultimate failure mode of the PSRPC is column end splitting. During the loading process, the RPC and the section steel work compatibly, and their strengths are given full play. The lateral effect of the RPC on the section steel and the composite confinement effect of the stirrups and section steel on the RPC core significantly increase the ultimate bearing capacity of the PSRPC, and these effects increase with an increase in the RPC strength. The confinement effect on the RPC core in the enclosed region increases with an increase in the section steel flange thickness, that is, the thicker the section steel flange, the larger the portion of the load taken by the RPC core and the higher the ultimate bearing capacity of the PSRPC. The finite element analysis of PSRPC specimen is carried out by ANSYS software, and the simulation results are in good agreement with the test results. A method for calculating the axial bearing capacity of a full-scale column is proposed, taking the confinement effect of the stirrups and section steel on the RPC core into account.

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Section: Introductionmentioning

confidence: 99%

Axial compression capacity analysis of prefabricated steel reactive powder concrete columns in prefabricated modular buildings

Zhang

et al. 2022

Advances in Structural Engineering

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A novel analysis-oriented theoretical model for steel tube confined ultra-high performance concrete

Chi

et al. 2021

Composite Structures

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Experimental Study on Bearing Capacity of Compression Members of Space Grid Structures Reinforced by RPC

et al. 2022

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Insufficient bearing capacity of compression bars in space grid structures can significantly reduce the collapse resistance of structures and cause immeasurable losses. Reactive powder concrete (RPC) with high strength, micro-expansion, and good ductility is used to reinforce the compression members of grid structures by infilling steel tubes. Axial compression tests on five types of high-frequency welded pipes with different section sizes and initial stresses were carried out. The results showed that compared to steel tubes alone, the bearing capacity of steel tubes reinforced by RPC could be increased by 75.77 to 218.34%. With a decrease of either the initial stress or confinement coefficient, the contribution of the material reinforcement increased. The failure mode of the specimen after RPC grouting was the same as that of the non-reinforced steel pipe, which was dominated by elastic-plastic buckling. The grouting hole after reinforcement did not fail prior to the instability of the member, which suggests that necessary measures to repair the hole should be taken. Based on the design method of axial compression bearing capacity of concrete-filled steel tubular members in six codes in China and abroad, the test results of this paper and 242 RPC-filled steel tubes were compared and analyzed. Finally, an equation of nominal bearing capacity, which estimates the ultimate bearing capacity of compressive members strengthened by filled RPC in grid structures, was proposed.

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Comparative Study on the Axial Compression and Bearing Capacity of Reactive Powder Concrete‐Filled Circular Steel Tube

Cited by 4 publications

References 4 publications

Axial compression capacity analysis of prefabricated steel reactive powder concrete columns in prefabricated modular buildings

Axial compression capacity analysis of prefabricated steel reactive powder concrete columns in prefabricated modular buildings

A novel analysis-oriented theoretical model for steel tube confined ultra-high performance concrete

Experimental Study on Bearing Capacity of Compression Members of Space Grid Structures Reinforced by RPC

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