Full Thread Glass Fiber Reinforced Plastic (frp) Applications Of Hollow Bolt And Mechanical Properties Of Experimental Study

Fiber-reinforced plastic(FRP),due to a high tensile strength,corrosion resistance,anti-fatigue properties,and the quality of light,anti-electromagnetic of the advantages of being seen as steel and aluminum instead of a new civil engineering and rock Soil anchor material.This paper first introduced the bolt in the rock,the Civil Engineering of the Application Status,anchoring mechanism and theory,and bolt the development of materials,and expounded the fiber-reinforced plastic material advantages and application prospects.Then on this paper,glass fiber reinforced plastic(GFRP) carried out a detailed description.All the thread of GFRP Hollow bolt is far from Guiyang Gaoxin Shengyuan Jidian Company for the use of raw materials for processing GFRP design of a very broad prospects for Engineering materials.In this paper,the anchor for a large number of mechanics experiment(including Latin America,pressure,cutting,twisting,Impact,etc.) and then focus on the bar itself was predictable and flexible composite materials mechanical analysis, drawn the following conclusions and results:1,the mechanical properties of glass by synthetic resin(base) performance and fiber content and interface with the bond performance and the performance of glass fiber,content and distribution of the decision.2,matrix,composite materials toughness and resistance to environmental performance(heat,moisture,etc.) depends primarily on the resin matrix of some mechanical properties.Such as cross-cutting performance,and the compression of the matrix,are closely related to technology performance depends primarily on the substrate.All the glass thread hollow steel bolt the resin matrix for the elastic support,when glass fiber content and distribution of certain,improve the matrix of elastic modulus of the matrix and the tensile (pressure) intensity,can enhance the tensile bolt(pressure) of the load Capacity.3,fiber,composite materials tensile depends largely on the mechanical properties of glass fiber and fiber content of the distribution of forms.All the glass thread steel bolt tensile strength usually depends on the macro-strength glass fiber,glass fiber depends on the content and distribution,but the matrix of fiber and there will also affect the strength of composite materials,fiber and transmission of the main axial load to bear And in some way undermine fragile. 4,fiber and matrix interface,composite materials,fiber,and fiber and the matrix between the fiber and matrix interface there is no continuity between, there are complex interactions.Hollow glass steel bolt in the axial tensile conditions,in the matrix of non-uniform materials,micro-cracks may be the initiation,expansion,and Central to the direction of fiber and fiber experience a tight squeeze,Arrest role.Fibers and matrix interface,enhanced material and the base of the connection,transfer and stress,and other information.Fiber and matrix interface of the mechanical properties,particularly the interface bond strength and interface fracture toughness of composite materials is an important mechanical parameters.5,when the fiber and matrix content from time to time,may require changes in accordance with the characteristics of both the content and fiber content can improve the ability to enhance the tensile material,and the high content of the substrate materials can increase the compression,shear and other capabilities.6,the paper done several groups of experimental data on average,the tensile strength of 291.78 MPa,compressive strength 198.48 MPa,Reverse shear stress intensity 38.4 MPa,is bending stress intensity 376.9 MPa,Central 389 MPa to the compressive strength of both countries to meet Works actual needs.7.Modified the hollow bolt diameter D=20mm,diameter d=9mm,.Tensile its capacity slightly larger than the diameter of 16 mm screw steel bolt,screw steel to replace some or all of steel rods and tensile capacity Has become possible.