Title:
TEXTILE-REINFORCED CONCRETE-STEEL PIPE-FRP COMPOSITE PIPE AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/003861
Kind Code:
A1
Abstract:
A textile-reinforced concrete-steel pipe-FRP composite pipe, comprising an FRP round pipe (4), a thin-wall steel pipe (2), and textile-reinforced concrete arranged coaxially from the inside to the outside, wherein fine-grained concrete (3) is poured between the FRP round pipe (4) and the thin-wall steel pipe (2), a steel sleeve ring (5) is provided on an outer surface of a connection portion by means of pegs (6), and a seal rubber gasket is provided below the steel sleeve ring (5). The inner layer of the pipe uses a resin fiber-reinforced material, and has the advantages of corrosion resistance, fatigue resistance, and light weight; the formed pipe features a smooth inner wall, no growth of microorganisms, a large water flow amount, and a long service life, such that subsequent maintenance costs are reduced; due to the use of a steel pipe as an interlayer, the composite pipe has a strong pressure bearing capability and high rigidity; the textile-reinforced concrete of the outer layer has a further constraint effect on the internal steel pipe and FRP, thereby further improving the pressure bearing capability and pressure resistance capability of the pipe; in addition, the textile-reinforced concrete has good corrosion resistance and permeability resistance, thereby implementing a long service life of the pipe.
Inventors:
YIN SHIPING (CN)
LI YAO (CN)
WANG FEI (CN)
CONG XI (CN)
LIU YUNCHAO (CN)
LI YAO (CN)
WANG FEI (CN)
CONG XI (CN)
LIU YUNCHAO (CN)
Application Number:
PCT/CN2019/109876
Publication Date:
January 14, 2021
Filing Date:
October 08, 2019
Export Citation:
Assignee:
UNIV CHINA MINING (CN)
International Classes:
F16L9/14; C04B28/00; F16L21/08
Foreign References:
| CN102588684A | 2012-07-18 | |||
| CN208041355U | 2018-11-02 | |||
| CN205716069U | 2016-11-23 | |||
| CN105221859A | 2016-01-06 | |||
| CN103707523A | 2014-04-09 | |||
| US6736168B2 | 2004-05-18 |
Attorney, Agent or Firm:
NANJING ZHENGLIAN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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