Peng Feng

Experimental Study of GFRP-Concrete Hybrid Beams

A new design concept that led to a hybrid beam is proposed. It comprises a U-shaped GFRP pultruded profile in which concrete was casted. Results are presented from 6 beams tested to ultimate failure, four of which having a fiber-reinforced plastic(FRP)-reinforced concrete construction of combined tensile reinforcement and permanent shuttering, while the others are conventional reinforced concrete beams as a comparison. It is shown that in comparison with an equivalent reinforced concrete beam, hybrid beam gives a great increase in bearing capacity but decrease in ductility.

Using CFRP to Repair the Steel Pipe with Fatigue Cracks

This paper provides a new method to repair the steel pipe with fatigue cracks by using carbon fiber reinforced polymer (CFRP). Cracks may arise in Pressure pipeline in service because of low cycle fatigue. Crack defect is the biggest problem, because crack will gradually propagate and seriously threaten the safe operation of pipeline. This paper provides a repair and calculation method for pressure pipeline with fatigue cracks, and some specific engineering cases are given based on this method.

Study on Improvement for Seismic Behavior of Reinforced Concrete Shear Walls

Shear walls are commonly used as structural elements to resist earthquake. The seismic performance of shear wall can be guaranteed under small earthquakes, but problems exist when it is subjected to large earthquakes. To improve the ductility and energy dissipation capacity of shear walls in large earthquakes, shear failure must be avoided and the performance of plastic hinge region must be improved. The adaptive-slit shear walls (ASSW) is proposed in this paper The mechanical characteristics of ASSW satisfy the requirements of structures under different seismic level. Therefore the damage process of ASSW can be controlled and the ductile shear failure can be realized, which obviously improve the seismic performance of shear wall structures.

Experimental Research on Flexural Behavior of FRP-Reinforced Concrete Beams

In order to improve the durability of reinforced concrete member, fiber reinforced polymer (FRP)-reinforced concrete member is introduces. Monotonic loading was applied to a reinforced concrete beam and FRP-reinforced concrete beam, in order to investigate the failure progress and characteristics of FRP-reinforced concrete beam.. The presenting study provide a basis for improving the design method for FRP-reinforced concrete member.

Experimental Investigation on Shear Behavior Of GFRP-Concrete Hybrid Beams

The present study describes an experimental investigation on shear behavior of GFRP-concrete hybrid beams, consisting of reinforced concrete beams combined with U-shaped glass fiber reinforced polymer pultruded profile constructed as combined tensile reinforcement, permanent formwork and corrosion resistance. A total of six beams were tested, three served as control beams and the remaining were implemented with U-shaped GFRP composites. Test results show that hybrid beam provides significant increase in shear capacity when compared to control RC beam.

Finite Element Analysis of Mechanical Behavior of Light-Weight Mobile FRP Bridge

As composite materials have advantages of high strength-to-weight ratio and superior corrosion resistance properties, it is used in emergencies in the construction of mobile bridges as the preferred material. However, In contrast to traditional steel or aluminum to the movement of the bridge as the main material, the original bridge forms need to be improved in order to reach the full of FRP material properties. In this paper, to study the domestic light-weight mobile FRP Bridge, the finite element method is used to analysis the mechanical properties of bridge.