CN201096233Y

CN201096233Y - Longitudinal rib prestressing force steel cylinder concrete pipe

Info

Publication number: CN201096233Y
Application number: CNU2007200998668U
Authority: CN
Inventors: 赵斌; 张亮
Original assignee: Tianjin Waterline Pipeline Engineering Co Ltd
Current assignee: Tianjin Waterline Pipeline Engineering Co Ltd
Priority date: 2007-10-10
Filing date: 2007-10-10
Publication date: 2008-08-06
Anticipated expiration: 2017-10-10

Abstract

The utility model relates to a prestressed steel concrete cylinder with longitudinal bars, comprising a mouthing, a faucet, a concrete cylinder core, a steel cylinder, a prestressed steel wire and a protection layer. The mouthing and the faucet are coaxially fixed respectively at two ends of the concrete cylinder core; the steel cylinder is coaxially embedded in the concrete cylinder core, with the two ends respectively fixed on the mouthing and on the faucet; the protection layer is fixedly mounted at the outer wall of the concrete cylinder core and a layer of prestressed steel wire is wound around the outer wall of the concrete cylinder core at the inner side of the protection layer; longitudinal bars are coaxially embedded evenly in the concrete cylinder core; the ratio Mu of the thickness d of the wall of the concrete cylinder core to the internal diameter D of the cylinder core is equal to or more than 1/32 and less than or equal to 1/10; the thread pitch @mm of the prestressed steel wire is equal to or more than two times of the diameter Phi mm of the prestressed steel wire and is equal to or less than 50mm. The steel concrete cylinder is simple in structure, reasonable and scientific in design, light in weight with a thin wall, and low in both transportation cost and construction cost; therefore the steel concrete cylinder with longitudinal bars can withstand large external load and internal water pressure.

Description

Longitudinal rib prestressed cylinder concrete pipe

Technical field

The utility model relates to concrete pipe, especially a kind of longitudinal rib prestressed cylinder concrete pipe.

Background technique

Prestressed concrete cylinder pipe (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 made with cement mortar protective course, this tubing adopt steel bell and spigot and with tube core in the steel cylinder welding install, joint socket is a flexible interface, this tubing is the composite structure that steel plate, concrete, High Tensile Steel Wire and slush different materials are formed, have steel and concrete characteristic separately, its major advantage is: the 1.. joint tighness is good; 2. shock resistance is strong; 3. convenient and quick construction; 4. antiseptic property is good; 5. maintenance maintenance is convenient.But its body own wt is heavier, and tube wall is thicker, and general pipe thickness has brought great difficulty for transportation and construction greater than 1/10 of caliber, has improved the cost of transportation and construction, and tubing to bear external and internal pressure lower.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, provides that a kind of tube wall is thin, in light weight, transportation and construction cost be lower, and can bear the bigger external pressure load and the longitudinal rib prestressed cylinder concrete pipe of internal water pressure.

The utility model solves its technical problem and is achieved through the following technical solutions:

This longitudinal rib prestressed cylinder concrete pipe; constitute by bellmouth, socket, concrete tube core, steel cylinder, reinforcement wire and protective layer; bellmouth and the coaxial respectively two ends that are packed in the concrete tube core of socket; the coaxial concrete pipe in-core that is inlaid in of steel cylinder; and its two ends are packed on bellmouth and the socket; the concrete pipe outer core is fixed with protective layer, is wound with reinforcement wire on the concrete pipe outer core in protective layer, it is characterized in that:

(1). at the vertical muscle of the coaxial uniform setting-in of concrete pipe in-core;

(2). the ratio of concrete tube core wall thickness d and this tube core inside diameter D is μ, 1/32≤μ≤1/10;

(3). the pitch of reinforcement wire is that this prestress steel filament diameter is φ mm, 2 φ≤≤ 50.

And, the coaxial uniform inboard or the outside that is inlaid in concrete pipe in-core steel cylinder of described vertical muscle, and two ends that should vertical muscle are packed in respectively on bellmouth and the socket, and vertical muscle quantity is the N root, 1≤N≤50.

And, the coaxial respectively uniform inboard and the outside that is inlaid in concrete pipe in-core steel cylinder of described vertical muscle, and two ends that should vertical muscle are packed in respectively on bellmouth and the socket, and the vertical muscle quantity in the inboard of steel cylinder and the outside is the N root, 1≤N≤50.

And the two ends of described vertical muscle are packed on bellmouth and the socket by link respectively.

And described socket outer wall directly upwards is shaped on 1-3 groove.

And described protective layer is a slush.

Advantage of the present utility model and beneficial effect are:

1. be fixed with steel cylinder in the tube core of this longitudinal rib prestressed cylinder concrete pipe, the inboard of this steel cylinder and the outside are fixed with vertical muscle respectively, and tube core one-time cast-forming, improve whole tubing and resisted the performance of external pressure load and internal water pressure, the two ends of this steel cylinder are packed on bellmouth and the socket, have strengthened the impermeability of body.

This longitudinal rib prestressed cylinder concrete pipe scientific design the thickness of tube core, the concrete tube core adopts the strong concrete one-time cast-forming, and the design of the pitch of the reinforcement wire of tube core outer wall is closeer, not only make whole concrete tube core wall thickness reduce to below 1/10 of homogeneous tube internal diameter, and tubing weight also only is with 1/2 to 2/3 of the existing tubing of bore, reduce the cost of transportation and the installation cost of tubing widely, solved the difficult problem of existing heavy caliber pipe lifting transportation.

3. be wound with reinforcement wire on the steel cylinder outer wall of this longitudinal rib prestressed cylinder concrete pipe, strengthen whole tubing and resisted the ability of external pressure load and internal water pressure, under equal external pressure earthing and internal water pressure situation, make the wall thickness attenuation of overall die, alleviate the weight of whole tubing, reduce glass fibre reinforced plastic concrete pipe integral construction cost and difficulty of construction.

4. this longitudinal rib prestressed cylinder concrete pipe adopts the flexible faucet structure of steel, have good joint Watertightness, and constructing operation is easy; Because this tube material and tube wall is thinner, the body own wt is lighter, has also improved the ability of opposing uneven settlement to a certain extent.

5. the socket outer wall of this longitudinal rib prestressed cylinder concrete pipe directly upwards is shaped on 1-3 groove, by corrosion-resistant O-ring seal is installed the interface between two glass fibre reinforced plastic concrete pipes is sealed in each groove, this cushion rubber is easy for installation, even and when the whole generation of glass fibre reinforced plastic concrete pipe sedimentation, also can guarantee the sealing of whole piece pipeline.

6. the utility model overall structure is simple, design science is reasonable, and tube wall is thin, in light weight, and transportation and construction cost are lower, is a kind of longitudinal rib prestressed cylinder concrete pipe that can bear big external pressure load and internal water pressure.

Description of drawings

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

Fig. 2 is that the A-A of Fig. 1 is to the cross section enlarged view;

Fig. 3 is that the B-B of Fig. 1 is to the cross section enlarged view;

Fig. 4 is that the C-C of Fig. 1 is to the cross section enlarged view.

Embodiment

The utility model is described in further detail below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection domain of the present utility model with this.

This longitudinal rib prestressed cylinder concrete pipe; by bellmouth 10; socket 1; concrete tube core 5; steel cylinder 6; reinforcement wire 8 and protective layer 9 constitute; bellmouth and the coaxial respectively two ends that are packed in the concrete tube core of socket; the coaxial concrete pipe in-core that is inlaid in of steel cylinder; and its two ends are welded on bellmouth and the socket; this socket outer wall directly upwards can be shaped on 1-3 groove 2 (the present embodiment accompanying drawing is depicted as two grooves); the concrete pipe outer core is fixed with cement mortar protective course; be wound with reinforcement wire on the concrete pipe outer core in cement mortar protective course, wherein the innovative point of this longitudinal rib prestressed cylinder concrete pipe is:

Shown in the present embodiment accompanying drawing, at the

vertical muscle

4,7 of the coaxial uniform setting-in of concrete pipe in-core, should indulge the coaxial respectively uniform steel cylinder inboard and the outside that is inlaid in the concrete pipe in-core of muscle, and the two ends that should indulge muscle are welded on by steel link 3 respectively, and (present embodiment steel link shown in the drawings is the folk prescription piece on bellmouth and the socket, its quantity can be according to the quantity setting of vertical muscle, also can be steel loop), steel cylinder is inboard to be 30 (quantity of vertical muscle can be provided with as required) with the vertical muscle quantity in the outside; Vertical muscle of the present utility model also can the coaxial uniform steel cylinder inboard or the outside that is inlaid in the concrete pipe in-core, and two ends that should vertical muscle are packed in respectively on bellmouth and the socket, and vertical muscle quantity is the N root, 1≤N≤50; The ratio of this concrete tube core wall thickness d and this tube core inside diameter D is μ, 1/32≤μ≤1/10; And the pitch of reinforcement wire is that this prestress steel filament diameter is φ mm, 2 φ≤≤ 50.

Instantiation:

1. longitudinal rib prestressed cylinder concrete pipe, bore D:1200mm, tube core wall thickness d:40mm, reinforcement wire diameter phi: 5mm, reinforcement wire Luo Ju @:10mm.

2. longitudinal rib prestressed cylinder concrete pipe, bore D:2000mm, tube core wall thickness d:80mm, reinforcement wire diameter phi: 7mm, reinforcement wire Luo Ju @:14mm.

3. longitudinal rib prestressed cylinder concrete pipe, bore D:2400mm, tube core wall thickness d:96mm, reinforcement wire diameter phi: 6mm, reinforcement wire Luo Ju @:18mm.

4. longitudinal rib prestressed cylinder concrete pipe, bore D:2600mm, tube core wall thickness d:104mm, reinforcement wire diameter phi: 9mm, reinforcement wire Luo Ju @:38mm.

Vertical muscle of the present utility model can be the prestressing force longitudinal steel bar, also can be non-prestressing force longitudinal steel bar.

Joint socket of the present utility model is a flexible interface, has good Watertightness, even also can effectively ensure the seal of whole pipeline under the situation of foundation settlement, prevents that sewage from leaking.Because the utility model adopts reinforced concrete construction, so can resist sizable external pressure load, thickness of earth-fill cover is little in construction, reduced difficulty, the construction cost of construction, and maintenance maintenance is simply easy.

Concrete tube core of the present utility model adopts the strong concrete one-time cast-forming, and the pitch of the reinforcement wire that this steel cylinder outer wall twines is closeer, not only make whole concrete tube core wall thickness reduce to below 1/10 of homogeneous tube internal diameter, and have under the situation of same physical property, tubing weight also only is with 1/2 to 2/3 of the existing tubing of bore, for example, existing bore is 3m, length is that the PCCP pipeline gross weight of 5m is approximately 28 tons, and the utility model tubing gross weight of same bore length approximately has only 17 tons, no matter in transportation, loading and unloading, still in pipeline construction, the reduction of cost is conspicuous.

Claims

1. longitudinal rib prestressed cylinder concrete pipe; constitute by bellmouth, socket, concrete tube core, steel cylinder, reinforcement wire and protective layer; bellmouth and the coaxial respectively two ends that are packed in the concrete tube core of socket; steel cylinder is coaxial to be inlaid in the concrete pipe in-core and its two ends are packed on bellmouth and the socket; the concrete pipe outer core is fixed with protective layer; be wound with reinforcement wire on the concrete pipe outer core in protective layer, it is characterized in that:

2. longitudinal rib prestressed cylinder concrete pipe according to claim 1, it is characterized in that: the coaxial uniform inboard or the outside that is inlaid in concrete pipe in-core steel cylinder of described vertical muscle, and the two ends that should indulge muscle are packed in respectively on bellmouth and the socket, and vertical muscle quantity is the N root, 1≤N≤50.

3. longitudinal rib prestressed cylinder concrete pipe according to claim 1, it is characterized in that: the coaxial respectively uniform inboard and the outside that is inlaid in concrete pipe in-core steel cylinder of described vertical muscle, and the two ends that should indulge muscle are packed in respectively on bellmouth and the socket, the vertical muscle quantity in the inboard of steel cylinder and the outside is the N root, 1≤N≤50.

4. according to claim 2 or 3 described longitudinal rib prestressed cylinder concrete pipes, it is characterized in that: the two ends of described vertical muscle are packed on bellmouth and the socket by link respectively.

5. according to claim 1 or 2 or 3 described longitudinal rib prestressed cylinder concrete pipes, it is characterized in that: described socket outer wall directly upwards is shaped on 1-3 groove.

6. longitudinal rib prestressed cylinder concrete pipe according to claim 1 is characterized in that: described protective layer is a slush.