Unlock instant, AI-driven research and patent intelligence for your innovation.

Hybrid FRP (fiber reinforced plastic) pipe high-strength reinforcing steel bar active powder concrete column and preparation method thereof

A technology of active powder and high-strength steel bars, applied in the direction of columns, piers, pillars, etc., can solve the problems of sudden failure and brittle failure, and achieve the effect of increasing the utilization rate

Active Publication Date: 2014-03-26
常熟市顺丰混凝土有限公司
View PDF6 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This invention relates to an improved type of material that can be used for construction purposes or other applications where strength needs are important. These types include reinforced plastic (FRP) tubes with embedded cementitious compositions made from calcium silicate hydration products mixed together by water glass). By combining these different components into one structure, this new material becomes stronger than traditional methods like metal piping while also being more efficient at handling heavy loads compared to conventional metallic structures.

Problems solved by technology

Technologies described in this patents involve creating a mixture of epoxy plungsteel (ECP) tubular pyramidal bundle called CFTRP, where both ends of each rod contain embedded glass strands, while one end faces another rod containing embedded carbon fibers. These materials help resist damage from external forces like impact loads during installation. By combining these different types of polymer substances together, the resulting composite cylindrical tension center beam becomes stronger due to compression load rather than bending failures caused by static pressure alone. Additionally, when mixed with other fill ingricns, they enhance their mechanical property and stability under harsh environmental factors including salt concentration and temperature. Overall, this technology allows for efficient use of advanced composites and provides technical solutions for building applications involving lightweight constructions.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hybrid FRP (fiber reinforced plastic) pipe high-strength reinforcing steel bar active powder concrete column and preparation method thereof
  • Hybrid FRP (fiber reinforced plastic) pipe high-strength reinforcing steel bar active powder concrete column and preparation method thereof
  • Hybrid FRP (fiber reinforced plastic) pipe high-strength reinforcing steel bar active powder concrete column and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The present invention is further explained: first, the hybrid FRP pipe is prepared in the factory according to the design requirements; the longitudinal steel bars and stirrups are tied, the tied steel cage is put into the FRP pipe, and the active powder concrete is poured in the FRP pipe.

[0035] The cylinder in this embodiment is a cylinder with a diameter of 350 mm, and the length of the cylinder is 2.1 m.

[0036] 8 HRB500 longitudinal bars, 20mm in diameter, are evenly arranged along the circumference. The spacing of the spiral stirrups is 200mm and the diameter is 8mm.

[0037] The compressive strength of reactive powder concrete is 150MPa.

[0038] Three layers of hybrid FRP materials form a hybrid FRP tube. The hybrid method is interlayer mixing, which wraps 1 layer of carbon fiber cloth, 1 layer of glass fiber cloth and 1 layer of aramid fiber cloth from the inside to the outside. See the cross-sectional diagram image 3 , See section diagram Figure 4 . The thicknes...

Embodiment 2

[0043] Except that the hybrid FRP tube is different from Example 1, the rest is the same. see Figure 5 with 6 .

[0044] The 4 kinds of hybrid fibers form a hybrid FRP tube. The hybrid method is interlayer hybridization. From the inside to the outside, one layer of carbon fiber cloth, one layer of basalt fiber, one layer of glass fiber cloth and one layer of aramid fiber cloth are wrapped. Among them, the thickness of carbon fiber is 0.2mm, the tensile strength is 4420MPa, and the modulus of elasticity is 2.0×10 5 MPa, elongation rate 1.7%; aramid fiber cloth 0.22mm, tensile strength 3420MPa, elastic modulus 1.8×10 5 MPa, 2.9% elongation; basalt fiber thickness 0.22mm, tensile strength 2420MPa, elastic modulus 1.0×10 5 MPa, elongation rate 2.4%; glass fiber cloth thickness 0.18mm, tensile strength 3000MPa, elastic modulus 0.51×10 5 MPa, 3.2% elongation.

[0045] The winding angle of the fiber cloth is +55°.

[0046] The thickness of the FRP pipe wall is 40mm.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Lengthaaaaaaaaaa
Compressive strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a hybrid FRP (fiber reinforced plastic) pipe high-strength reinforcing steel bar active powder concrete column and a preparation method thereof and belongs to the field of buildings. The hybrid FRP pipe high-strength reinforcing steel bar active powder concrete column comprises a hybrid FRP pipe and active powder concrete in the hybrid FRP pipe, wherein stirrups and longitudinal high-strength reinforcing steel bars are arranged in the active powder concrete in the hybrid FRP pipe; the stirrups are wound on the longitudinal high-strength reinforcing steel bars to form a reinforcing steel bar cage; a gap is reserved between the reinforcing steel bar cage and the hybrid FRP pipe; compared with the conventional steel pipe high-strength concrete combined column and the single fiber FRP pipe high-strength concrete, the component provided by the invention has the advantage that the bearing capacity, the deformation capacity, the anti-seismic capacity and the durability can be improved. The hybrid FRP pipe high-strength reinforcing steel bar active powder concrete column and the preparation method thereof are applicable to the technical field of concrete combined column structures, can be used for new building structures and can also be used for a reinforcing and hoisting project of the active powder concrete combined column.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Owner 常熟市顺丰混凝土有限公司