Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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Numerical analysis and design methods of grout-filled GFRP tube repaired corroded CHS T-joints
https://orcid.org/0000-0002-0300-6104
Highlights FE model of compressive Grout-Filled GFRP Tube (GFGT) repaired corroded CHS T-joint was established and validated. Geometric, material, and chord end stress parameters were investigated for GFGT repaired joints. Typical failure modes of GFGT repaired corroded joints were identified and repairing suggestions were provided. The design methods for the compressive strength of GFGT repaired corroded CHS T-joint was proposed.
Abstract This study explores the compressive behavior of Grout-Filled GFRP Tube (GFGT) repaired corroded circular hollow section (CHS) T-joints. Finite element models of GFGT repaired corroded joints were developed, validated, and utilized to examine the influence of the joint geometric, material, and chord end stress parameters on the compressive strength and repairing efficiency of the joints. The findings reveal that the ultimate strength of the GFGT repaired joint increases with a thicker GFRP tube, a lower repaired chord section hollow ratio, a higher grout strength, and a longer repaired range. By optimizing the repairing parameters of the grout-filled GFRP tube, the compressive strength of GFGT repaired corroded joints with 16% and 32% corrosion rates can be up to increase to 164% and 147% of the uncorroded counterparts, respectively. The chord end stress exerts a similar but weaker effect on the repaired joints than on the unrepaired joints. A series of suggestions were proposed for repairing joints with different corrosion degrees to achieve a 20% ultimate strength enhancement compared to uncorroded joints. The compressive strength degradation rate of corroded joints was accurately predicted by the design method in the CIDECT and prEN guidelines. The feasibility of the guideline formulae to evaluate the strength reduction rate caused by the chord end preload was verified. A design method to predict the compressive strength of GFGT repaired corroded joints was proposed.
Numerical analysis and design methods of grout-filled GFRP tube repaired corroded CHS T-joints
https://orcid.org/0000-0002-0300-6104
Highlights FE model of compressive Grout-Filled GFRP Tube (GFGT) repaired corroded CHS T-joint was established and validated. Geometric, material, and chord end stress parameters were investigated for GFGT repaired joints. Typical failure modes of GFGT repaired corroded joints were identified and repairing suggestions were provided. The design methods for the compressive strength of GFGT repaired corroded CHS T-joint was proposed.
Abstract This study explores the compressive behavior of Grout-Filled GFRP Tube (GFGT) repaired corroded circular hollow section (CHS) T-joints. Finite element models of GFGT repaired corroded joints were developed, validated, and utilized to examine the influence of the joint geometric, material, and chord end stress parameters on the compressive strength and repairing efficiency of the joints. The findings reveal that the ultimate strength of the GFGT repaired joint increases with a thicker GFRP tube, a lower repaired chord section hollow ratio, a higher grout strength, and a longer repaired range. By optimizing the repairing parameters of the grout-filled GFRP tube, the compressive strength of GFGT repaired corroded joints with 16% and 32% corrosion rates can be up to increase to 164% and 147% of the uncorroded counterparts, respectively. The chord end stress exerts a similar but weaker effect on the repaired joints than on the unrepaired joints. A series of suggestions were proposed for repairing joints with different corrosion degrees to achieve a 20% ultimate strength enhancement compared to uncorroded joints. The compressive strength degradation rate of corroded joints was accurately predicted by the design method in the CIDECT and prEN guidelines. The feasibility of the guideline formulae to evaluate the strength reduction rate caused by the chord end preload was verified. A design method to predict the compressive strength of GFGT repaired corroded joints was proposed.
Numerical analysis and design methods of grout-filled GFRP tube repaired corroded CHS T-joints
https://orcid.org/0000-0002-0300-6104
Highlights FE model of compressive Grout-Filled GFRP Tube (GFGT) repaired corroded CHS T-joint was established and validated. Geometric, material, and chord end stress parameters were investigated for GFGT repaired joints. Typical failure modes of GFGT repaired corroded joints were identified and repairing suggestions were provided. The design methods for the compressive strength of GFGT repaired corroded CHS T-joint was proposed.
Abstract This study explores the compressive behavior of Grout-Filled GFRP Tube (GFGT) repaired corroded circular hollow section (CHS) T-joints. Finite element models of GFGT repaired corroded joints were developed, validated, and utilized to examine the influence of the joint geometric, material, and chord end stress parameters on the compressive strength and repairing efficiency of the joints. The findings reveal that the ultimate strength of the GFGT repaired joint increases with a thicker GFRP tube, a lower repaired chord section hollow ratio, a higher grout strength, and a longer repaired range. By optimizing the repairing parameters of the grout-filled GFRP tube, the compressive strength of GFGT repaired corroded joints with 16% and 32% corrosion rates can be up to increase to 164% and 147% of the uncorroded counterparts, respectively. The chord end stress exerts a similar but weaker effect on the repaired joints than on the unrepaired joints. A series of suggestions were proposed for repairing joints with different corrosion degrees to achieve a 20% ultimate strength enhancement compared to uncorroded joints. The compressive strength degradation rate of corroded joints was accurately predicted by the design method in the CIDECT and prEN guidelines. The feasibility of the guideline formulae to evaluate the strength reduction rate caused by the chord end preload was verified. A design method to predict the compressive strength of GFGT repaired corroded joints was proposed.
Numerical analysis and design methods of grout-filled GFRP tube repaired corroded CHS T-joints
Chang, Hongfei (Autor:in) / Yan, Xiaoyu (Autor:in) / Zuo, Wenkang (Autor:in) / Xia, Junwu (Autor:in) / Yu, Tao (Autor:in)
Thin-Walled Structures ; 198
15.02.2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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