Title:
STEEL-FIBER COMPOSITE MATERIAL CONCRETE COMBINED COLUMN, AND POST-EARTHQUAKE REPAIR METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2017/185942
Kind Code:
A1
Abstract:
Provided is a steel-fiber composite material concrete combined column, comprising an inner steel pipe (4) disposed in the center, said inner steel pipe (4) being internally provided with unbonded steel strand (2); the outer side of the inner steel pipe (4) is provided with an outer steel pipe (5); concrete (6) is poured between the inner steel pipe (4) and the outer steel pipe (5); a plurality of additional small steel pipes (9) are evenly arranged on the outer side of the outer steel pipe (5), and each of the additional small steel pipes (9) is internally provided with unbonded steel strand (11); also comprised is a composite reinforcing cage arranged on the outer side of the outer steel pipe (5) and on the same axis; the outer steel pipe (5) and the compound reinforcing cage are covered with high-ductility concrete (3); at the core area, the outer side of the high-ductility concrete (3) is wrapped with an anti-spalling layer (8). The concrete column has stable and controllable second stiffness after yield and small residual displacement after an earthquake; it is possible to repair it quickly after an earthquake and it has high durability similar to a fiber-composite material reinforced structure. The concrete column may be used for bridge piers and structural columns for buildings, and is suitable for highy corrosive environments such as the ocean. Also provided is a repair method, which may be used for quickly repairing a damaged concrete combined column.
Inventors:
SUN ZEYANG (CN)
WU GANG (CN)
WU GANG (CN)
Application Number:
PCT/CN2017/078696
Publication Date:
November 02, 2017
Filing Date:
March 30, 2017
Export Citation:
Assignee:
UNIV SOUTHEAST (CN)
International Classes:
E01D19/02; E01D22/00; E04C3/34; E04G23/02
Foreign References:
| CN106012809A | 2016-10-12 | |||
| CN105442755A | 2016-03-30 | |||
| CN103074847A | 2013-05-01 | |||
| CN104562922A | 2015-04-29 | |||
| CN202689338U | 2013-01-23 | |||
| CN204589789U | 2015-08-26 | |||
| CN202117165U | 2012-01-18 | |||
| CN102409606A | 2012-04-11 | |||
| KR20080000243A | 2008-01-02 | |||
| KR20100102907A | 2010-09-27 |
Attorney, Agent or Firm:
NANJING SUGAO PATENT AND TRADEMARK FIRM (ORDINARY PARTNERSHIP) (CN)
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