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2024 Vol. 54, No. 6
Display Method:
2024, 54(6): 1-12.
doi: 10.3724/j.gyjzG24043001
Abstract:
The serviceability of FRP prestressed concrete (FRP-PC) beams under sustained loading would be affected by the excessive long-term additional deflection, which is caused by the coupled effect of creep and relaxation of FRP tendons, and shrinkage and ...
The serviceability of FRP prestressed concrete (FRP-PC) beams under sustained loading would be affected by the excessive long-term additional deflection, which is caused by the coupled effect of creep and relaxation of FRP tendons, and shrinkage and ...
2024, 54(6): 13-21.
doi: 10.3724/j.gyjzG24032004
Abstract:
In order to determine the relaxation loss of prestressed carbon fiber reinforced polymer (CFRP) rods in the ground anchor abutment of Danjiangkou Reservoir Bridge of Shixi Expressway in Hubei Province, the stress relaxation of CFRP rods under differe...
In order to determine the relaxation loss of prestressed carbon fiber reinforced polymer (CFRP) rods in the ground anchor abutment of Danjiangkou Reservoir Bridge of Shixi Expressway in Hubei Province, the stress relaxation of CFRP rods under differe...
2024, 54(6): 22-30.
doi: 10.3724/j.gyjzG24041601
Abstract:
Through the pull-out test of Glass Fiber Reinforced Polymer(GFRP) bent bars reinforced Ultra High Performance Concrete(UHPC), the mechanical performance and damage mechanism of GFRP bars in bending zone were studied. The cooperative performance of GF...
Through the pull-out test of Glass Fiber Reinforced Polymer(GFRP) bent bars reinforced Ultra High Performance Concrete(UHPC), the mechanical performance and damage mechanism of GFRP bars in bending zone were studied. The cooperative performance of GF...
2024, 54(6): 31-45.
doi: 10.3724/j.gyjzG24040301
Abstract:
To study the seismic performances of a novel of GFRP-confined FRP bar-reinforced concrete piers, also called FCFRC piers which were constructed of GFRP rebars, CFRP stirrups, GFRP sheets, and concrete, a numerical simulation model for FCFRC piers und...
To study the seismic performances of a novel of GFRP-confined FRP bar-reinforced concrete piers, also called FCFRC piers which were constructed of GFRP rebars, CFRP stirrups, GFRP sheets, and concrete, a numerical simulation model for FCFRC piers und...
2024, 54(6): 46-53.
doi: 10.3724/j.gyjzG23051401
Abstract:
In the context of the "dual-carbon goals" strategy, the use of green and low-carbon geopolymer concrete instead of high-carbon emission Portland cement concrete is currently a hot research topic. This paper focused on fly ash-based geopolymer concret...
In the context of the "dual-carbon goals" strategy, the use of green and low-carbon geopolymer concrete instead of high-carbon emission Portland cement concrete is currently a hot research topic. This paper focused on fly ash-based geopolymer concret...
2024, 54(6): 54-60.
doi: 10.3724/j.gyjzG24032001
Abstract:
Large diameter shield tunnel is the main construction form of long and large tunnels that cross sea and river, which has the advantages of safety, economy, efficiency, and intelligence. Fiber Reinforced Polymer (FRP) possess the advantages of light w...
Large diameter shield tunnel is the main construction form of long and large tunnels that cross sea and river, which has the advantages of safety, economy, efficiency, and intelligence. Fiber Reinforced Polymer (FRP) possess the advantages of light w...
2024, 54(6): 61-71.
doi: 10.3724/j.gyjzG23071211
Abstract:
The prestressed concrete cylinder pipe (PCCP) may fail at each structural layer under internal pressure. Carbon fiber reinforced polymer (CFRP) lining is one of the most commonly used methods for repairing PCCPs. However, the failure mechanism of CFR...
The prestressed concrete cylinder pipe (PCCP) may fail at each structural layer under internal pressure. Carbon fiber reinforced polymer (CFRP) lining is one of the most commonly used methods for repairing PCCPs. However, the failure mechanism of CFR...
2024, 54(6): 72-80.
doi: 10.3724/j.gyjzG23111328
Abstract:
Carbon fiber-reinforced polymer (CFRP) has been widely used in structural strengthening due to its light weight, high strength and anti-corrosion. Specifically, in strengthening RC beams, various strengthening techniques, such as external bonding, ne...
Carbon fiber-reinforced polymer (CFRP) has been widely used in structural strengthening due to its light weight, high strength and anti-corrosion. Specifically, in strengthening RC beams, various strengthening techniques, such as external bonding, ne...
2024, 54(6): 81-90.
doi: 10.3724/j.gyjzG24042801
Abstract:
Fatigue cracking is one of the most common issue that damages the serviceability of steel bridges. Prestressed carbon fiber-reinforced polymer (CFRP) materials can effectively inhibit crack propagation, thereby extending the service life of structure...
Fatigue cracking is one of the most common issue that damages the serviceability of steel bridges. Prestressed carbon fiber-reinforced polymer (CFRP) materials can effectively inhibit crack propagation, thereby extending the service life of structure...
2024, 54(6): 91-99.
doi: 10.3724/j.gyjzG24013001
Abstract:
To explore the fatigue performance of surface-cracked bent steel plates with different reinforcing materials, fatigue loading tests were conducted on Q345 steel plates with surface cracks using Carbon Fiber Reinforced Polymer (CFRP) plates and steel ...
To explore the fatigue performance of surface-cracked bent steel plates with different reinforcing materials, fatigue loading tests were conducted on Q345 steel plates with surface cracks using Carbon Fiber Reinforced Polymer (CFRP) plates and steel ...
2024, 54(6): 100-107.
doi: 10.3724/j.gyjzG23112405
Abstract:
Through conducting axial compression tests on 13 RC stub columns with corroded stirrups strengthened by grouted GFRP Jackets reinforced with CFRP grids, the effects of the number of CFRP grid layers and stirrup corrosion rate on the load-axial displa...
Through conducting axial compression tests on 13 RC stub columns with corroded stirrups strengthened by grouted GFRP Jackets reinforced with CFRP grids, the effects of the number of CFRP grid layers and stirrup corrosion rate on the load-axial displa...
2024, 54(6): 108-117.
doi: 10.3724/j.gyjzG23022014
Abstract:
The mechanical properties of CFRP-concrete interface are important factors affecting the seismic performance of CFRP reinforced structures. A bilinear cohesive force unit based on nonlinear softening mechanical behavior was established to simulate th...
The mechanical properties of CFRP-concrete interface are important factors affecting the seismic performance of CFRP reinforced structures. A bilinear cohesive force unit based on nonlinear softening mechanical behavior was established to simulate th...
2024, 54(6): 118-129.
doi: 10.3724/j.gyjzG23042605
Abstract:
In order to study the seismic performance of CFRP reinforced recycled aggregate concrete composite torsional columns, two specimens reinforced by CFRP and one specimen not reinforced by CFRP were designed and carried out pseudo-static tests under com...
In order to study the seismic performance of CFRP reinforced recycled aggregate concrete composite torsional columns, two specimens reinforced by CFRP and one specimen not reinforced by CFRP were designed and carried out pseudo-static tests under com...
2024, 54(6): 130-140.
doi: 10.3724/j.gyjzG23092008
Abstract:
Axial compressive tests of 14 short circular concrete columns strengthened with woven carbon fiber mesh and polypropylene fiber-reinforced cement-based composite materials were conducted. The ultimate bearing capacity and damage pattern of each speci...
Axial compressive tests of 14 short circular concrete columns strengthened with woven carbon fiber mesh and polypropylene fiber-reinforced cement-based composite materials were conducted. The ultimate bearing capacity and damage pattern of each speci...
2024, 54(6): 141-148.
doi: 10.3724/j.gyjzG24040701
Abstract:
In order to investigate the seismic performance of concrete-filled square steel tubular columns with CFRP(C-CFST), three columns with CFRP were tested under quasi-static load with steel ratio as the parameter. The changing parameter of the composite ...
In order to investigate the seismic performance of concrete-filled square steel tubular columns with CFRP(C-CFST), three columns with CFRP were tested under quasi-static load with steel ratio as the parameter. The changing parameter of the composite ...
2024, 54(6): 149-159.
doi: 10.3724/j.gyjzG24032002
Abstract:
Biochar can be served as a lightweight aggregate material and its partial incorporation into concrete can realize internal curing and filling effects, thereby enhancing the mechanical properties of cementitious materials. It represents a potential ca...
Biochar can be served as a lightweight aggregate material and its partial incorporation into concrete can realize internal curing and filling effects, thereby enhancing the mechanical properties of cementitious materials. It represents a potential ca...
2024, 54(6): 160-168.
doi: 10.3724/j.gyjzG23011501
Abstract:
To investigate the restoring force characteristics of T-joints between PVC-CFRP confined concrete columns and RC ring beams, eleven exterior joint specimens under quasi-static loading were tested. The experimental results showed that the enlarged rin...
To investigate the restoring force characteristics of T-joints between PVC-CFRP confined concrete columns and RC ring beams, eleven exterior joint specimens under quasi-static loading were tested. The experimental results showed that the enlarged rin...
2024, 54(6): 169-176.
doi: 10.3724/j.gyjzG23061204
Abstract:
Six precast geopolymer concrete sandwich panels enabled by glass fiber reinforced polymer (GFRP) hexagonal tubular connectors were fabricated and tested under axial compression. The effects of three key parameters, including the connector spacing, pa...
Six precast geopolymer concrete sandwich panels enabled by glass fiber reinforced polymer (GFRP) hexagonal tubular connectors were fabricated and tested under axial compression. The effects of three key parameters, including the connector spacing, pa...
2024, 54(6): 177-189.
doi: 10.3724/j.gyjzG24041713
Abstract:
9 concrete-filled steel tubular columns with an inner FRP tube (CFT-GT), 1 concrete-filled steel tubular column (CFT) and 9 FRP tube confined concrete columns were tested subjected to axial compression. The results showed that the ultimate bearing ca...
9 concrete-filled steel tubular columns with an inner FRP tube (CFT-GT), 1 concrete-filled steel tubular column (CFT) and 9 FRP tube confined concrete columns were tested subjected to axial compression. The results showed that the ultimate bearing ca...
2024, 54(6): 190-196.
doi: 10.3724/j.gyjzG24040601
Abstract:
With the advancement of material science and industrial technology, composite materials have gained rapid development and been widely used in multiple fields. Currently, the railway has been booming in China, with the increase in railway mileage each...
With the advancement of material science and industrial technology, composite materials have gained rapid development and been widely used in multiple fields. Currently, the railway has been booming in China, with the increase in railway mileage each...
2024, 54(6): 197-205.
doi: 10.3724/j.gyjzG24041501
Abstract:
To study the mechanical properties of chopped basalt fiber-reinforced cement-based composites, 84 compressive specimens, 72 flexural specimens and 140 tensile specimens were designed and tested. The effects of water-cement ratio, fiber content, fiber...
To study the mechanical properties of chopped basalt fiber-reinforced cement-based composites, 84 compressive specimens, 72 flexural specimens and 140 tensile specimens were designed and tested. The effects of water-cement ratio, fiber content, fiber...
