Hysteretic Behavior Analysis Of Hollow FRP Pipe-Reinforced Concrete Column

Hollow FRP pipe-reinforced concrete column is that the concrete is poured in the middleof prefabricated FRP pipe and PVC pipe, and become so-called the confined Hollow FRPpipe-reinforced concrete columns.The new composite structures, FRP pipe can be used as a permanent template tofacilitate the construction process, construction progress relatively quickly. This structurefilled with concrete in the FRP pipe, can effectively constrained core concrete, the strengthand ductility of the overall structure have greatly improved. This structure combines theadvantages of FRP pipe concrete structure and reinforced concrete structure which can bereduced cross-sectional dimension members, increase building space. The structure takesadvantage of the concept of constraint improves concrete strength and deformation capacityof concrete core components, thus improves the seismic performance of the structure. FRPpipe can resist the effects of harsh environment (moisture, corrosion, freezing, etc.), thisstructure can effectively prevent the corrosion of steel and concrete carbonation, therebysignificantly improve the durability of concrete.This paper models the hollow FRP pipe-reinforced concrete member by using the finitesoftware, and analyzes member’s mechanical property under low cyclic load. The specificcontent includes:1. Analyzing member’s seismic performance by reading literatures, and finding out whatfactors affect member’s seismic performance.2. Emulating and analyzing the member through parameter entities by using the finiteelement software.3. Changing axial compression ratio, slenderness ratio, radius-thickNess ratio to analyzestructure’s seismic performance, getting the structure’s curves of seismic performance.4. Based on the skeleton curve, analyzing the ductility of the member.Research results show that:1.when the slenderness ratio, radius-thickNess ratio is unchanged, along with the axialcompression ratio increases the strength of the component seismic curve is obviously reduced;2.when the slenderness ratio, axial compression ratio is unchanged, along withradius-thickNess ratio increases the strength of the component seismic curve is obviouslyreduced;3.when the radius-thickNess ratio, axial compression ratio is unchanged, along withslenderness ratio increases and keeping the section unchanged the member’s level restoringfore is reduced.