CN201925619U - 1*19H helical rib steel stranded wire prestress cylinder concrete pipe - Google Patents

Abstract

The utility model provides a 1*19H helical rib steel stranded wire prestress cylinder concrete pipe, which comprises a steel pipe, a protective layer and 1*19H helical rib steel stranded wires. The protective layer is fixed between the inner wall and the outer wall of the steel pipe, and the 1*19H helical rib steel stranded wires are wound on the outer wall of the steel pipe in the protective layer. The 1*19H helical rib steel stranded wire prestress cylinder concrete pipe solves the problems of shifting and retracting of cored wires and poor bond stress and mechanical property of the prestress cylinder concrete pipe is improved.

Description

A kind of 1 * 19H helix rib steel twisted wire Prestressed concrete cylinder pipe

Technical field

The utility model belongs to the prestressed concrete member field, especially relates to a kind of 1 * 19H helix rib steel twisted wire Prestressed concrete cylinder pipe.

Background technique

Prestressed concrete cylinder pipe is called for short PCCP, is a kind of novel rigidity tubing.It is that the strong concrete tube core that has steel cylinder twines reinforcement wire; spray is with cement mortar protective course; adopt steel bell and spigot; welded together with steel cylinder; fluted and the cushion rubber of joint socket has formed the flexible joint of sliding type cushion rubber; be the composite structure that steel plate, concrete, High Tensile Steel Wire and slush different materials are formed, have steel and concrete characteristic separately.According to the difference of steel cylinder position in tube core, can be divided into two kinds: lined Prestressed concrete cylinder pipe, embed-type Prestressed concrete cylinder pipe.

Prestressed concrete cylinder pipe have justice composite structure, bear in higher, the characteristic such as joint tighness good, shock resistance is strong, convenient and quick construction, antiseptic property are good, easy to maintenance of external pressure, paid close attention to by engineering circle, being widely used in long water delivery main line, pressure inverted-siphon, town water supply engineering, industry at interval has the waterline of pressure, electric power plant circulating water engineering drainage pipeline, pressure blowdown main etc.Compare with tubing in the past, have applied widelyly, the economic life is long, anti-seismic performance good, easy for installation, advantage such as the operation expenditure is low, and is water-tight substantially.

The prestressing force steel drum of prior art all is to twine the 1-3 layer by the reinforcement wire of light face to use, exist following deficiency, because the round wire surface is smooth, only depend on the back pressure stress of the frictional force generation of the non-effective contact between the round wire to concrete member, very easily produce core silk limit portion slippage retraction, cause the minimizing of core silk stress or lose stress fully, restricted the quality and the life-span of prestressed concrete member, and reduced steel wire and concrete bond stress.

Summary of the invention

The purpose of this utility model provides a kind of solution core silk slippage retraction problems and the not enough problem of bond stress, improves 1 * 19H helix rib steel twisted wire Prestressed concrete cylinder pipe of the mechanical property of Prestressed concrete cylinder pipe.

The technical solution of the utility model is: a kind of 1 * 19H helix rib steel twisted wire Prestressed concrete cylinder pipe; comprise steel pipe, protective layer; the steel pipe inner and outer wall is fixed with protective layer respectively; also comprise 1 * 19H screw rib prestress wire, described 1 * 19H screw rib prestress wire is wrapped on the interior outer wall of steel pipe of protective layer.

Described protective layer is a slush.

Advantage and the good effect that the utlity model has are: solve core silk slippage retraction problems, increased steel strand and concrete bond stress, improve the mechanical property of Prestressed concrete cylinder pipe.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of steel strand in the utility model.

Among the figure:

1, steel pipe 2, protective layer 3,1 * 19H screw rib prestress wire

Embodiment

As shown in Figure 1 and Figure 2; the utility model comprises steel pipe 1, protective layer 2; steel pipe 1 inner and outer wall is fixed with slush respectively as protective layer 2; also comprise 1 * 19H screw rib prestress wire 3, described 1 * 19H screw rib prestress wire 3 is wrapped on steel pipe 1 outer wall in the protective layer 2.

More than an embodiment of the present utility model is had been described in detail, but described content only is preferred embodiment of the present utility model, can not be considered to be used to limit practical range of the present utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the present utility model.

Claims (2)

1. 1 * 19H helix rib steel twisted wire Prestressed concrete cylinder pipe; comprise steel pipe, protective layer; the steel pipe inner and outer wall is fixed with protective layer respectively; it is characterized in that: also comprise 1 * 19H screw rib prestress wire, described 1 * 19H screw rib prestress wire is wrapped on the interior outer wall of steel pipe of protective layer.

2. a kind of 1 * 19H helix rib steel twisted wire Prestressed concrete cylinder pipe according to claim 1, it is characterized in that: described protective layer is a slush.

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