CN101373034B

CN101373034B - Steel sleeve reinforced concrete pipe

Info

Publication number: CN101373034B
Application number: CN2007100592199A
Authority: CN
Inventors: 赵斌; 张亮
Original assignee: Tianjin Waterline Pipeline Engineering Co Ltd
Current assignee: Tianjin Wanlian Pipeline Technology Development Co. Ltd.
Priority date: 2007-08-22
Filing date: 2007-08-22
Publication date: 2011-08-17
Anticipated expiration: 2027-08-22
Also published as: CN101373034A

Abstract

The invention relates to a steel sleeve RC pipe, which comprises a mouthpiece, a socket, a concrete pipe core, a reinforcement framework, a prestressed steel wire and a protection layer. The mouthpiece and the socket are fixedly and coaxially arranged at the two ends of the concrete pipe core respectively; the reinforcement framework, with two ends being fixedly arranged at the mouthpiece and the socket, is coaxially embedded in the concrete pipe core; a steel barrel is fixedly arranged on the outer wall of the concrete pipe core; and the protection layer is fixedly arranged on the outer wall of the steel barrel and the prestressed steel wire is wound under the outer wall protection layer. The ratio of the wall thickness d to the inner diameter D is Mu, and Mu is more than or equal to one thirty-second, and is less than or equal to one sixteenth; the screw pitch of the prestressed steel wire is at mm, the diameter of the prestressed steel wire is Phi mm and at is more than or equal to double Phi and is less than or equal to fiftieth. The invention has the advantages of simple integrated structure, scientific and reasonable design, thin pipe wall, light weight, good impermeability, low cost for transportation and construction, and high creativity.

Description

Steel sleeve reinforced concrete pipe

Technical field

The present invention relates to concrete pipe, especially a kind of steel sleeve reinforced concrete pipe.

Background technique

Various waterlines often will be used concrete reinforced pipe, and its main cause is that it has stronger external pressure load and the internal water pressure ability resisted.Though on compressive strength, can satisfy the requirement of use, still have following shortcoming: 1. impervious relatively poor; 2. tube wall is thicker, and body is heavier; 3. transportation and construction cost are higher.The tube core wall thickness of present concrete reinforced pipe is according to the NBS design, and its thickness should be greater than 1/16 of tube core internal diameter.The main cause that die design is thicker be concrete pipe need bear construction due to the earthing high external pressure load and the high inner pressuring load due to the fed sheet of a media.

Find a kind of reinforced concrete tubing by retrieval, it is at the coaxial steel cylinder of inlaying of concrete reinforced pipe in-core portion, though can reach good impermeability, this steel cylinder has been divided into two parts with concrete integral body, thereby has reduced the whole compressive strength of reinforced concrete body.

Summary of the invention

The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of tube wall thin, in light weight, impervious good, transportation and the lower steel sleeve reinforced concrete pipe of construction cost.

The present invention solves its technical problem and is achieved through the following technical solutions:

A kind of steel sleeve reinforced concrete pipe; constitute by bellmouth, socket, concrete tube core, Framework Of Steel Reinforcement, 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 Framework Of Steel Reinforcement; the two ends of this Framework Of Steel Reinforcement are packed on bellmouth and the socket, it is characterized in that:

(1). the concrete pipe outer core installs a steel cylinder, and the outer wall of this steel cylinder installs protective layer and twine reinforcement wire on the steel cylinder outer wall between steel cylinder and the protective layer;

(2). the ratio of concrete tube core wall thickness d and this tube core inside diameter D is μ, 1/32≤μ≤1/16;

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

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

And described Framework Of Steel Reinforcement is 1-2 layers of the coaxial setting-ins from inside to outside of concrete pipe in-core.

And described Framework Of Steel Reinforcement is made up of N root longitudinal steel bar, and this longitudinal steel bar is coaxial uniformly to be inlaid in the concrete pipe in-core, and the two ends of this longitudinal steel bar are packed on bellmouth and the socket 1≤N≤50 respectively.

And described Framework Of Steel Reinforcement is the cylindrical reinforcement frame of being made up of circumferential reinforcement and longitudinal steel bar.

And described protective layer is a slush.

Advantage of the present invention and beneficial effect are:

1. the tube core outer wall of this steel sleeve reinforced concrete pipe is fixed with a steel cylinder, the two ends of this steel cylinder are packed on bellmouth and the socket, have strengthened the impermeability of body, and steel cylinder is packed in the tube core outer wall, the tube core concrete is become one, strengthened the crushing resistance of whole body.

This steel sleeve reinforced 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 1/16 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 steel sleeve reinforced concrete pipe, and tube core inside is embedded with Framework Of Steel Reinforcement, strengthen whole tubing and resisted the ability of external pressure earthing 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 steel sleeve reinforced 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 steel sleeve reinforced concrete pipe directly upwards is shaped on 1-3 grooves, 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. overall structure of the present invention is simple, design science is reasonable, and tube wall is thin, in light weight, impervious good, and transportation and construction cost are lower, are the higher steel sleeve reinforced concrete pipes of a kind of novelty.

Description of drawings

Fig. 1 is a structural representation of the present invention;

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.

Embodiment

The invention will be further described below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.

This steel sleeve reinforced concrete pipe; by bellmouth 8; socket 1; concrete tube core 3; Framework Of Steel Reinforcement 4; reinforcement wire 6; protective layer 7 constitutes; wherein bellmouth and the coaxial respectively two ends that are packed in the concrete tube core of socket; at the coaxial Framework Of Steel Reinforcement that is equipped with of concrete pipe in-core; the cylindrical reinforcement frame that this Framework Of Steel Reinforcement is made up of longitudinal steel bar and circumferential reinforcement; it also can be the N root longitudinal steel bar form as shown in the present embodiment accompanying drawing; (the longitudinal steel bar quantity in the accompanying drawing is 30 in 1≤N≤50; its longitudinal steel bar quantity can be provided with as required), this longitudinal steel bar is coaxial to be distributed on the concrete pipe in-core and its two ends are installed in respectively on bellmouth and the socket.This socket outer wall directly upwards can be shaped on 1-3 grooves 2 (the present embodiment accompanying drawing is depicted as two grooves), the coaxial steel cylinder 5 that installs of this concrete pipe outer core wherein, the outer wall of this steel cylinder is fixed with cement mortar protective course and twines reinforcement wire on the outer wall of steel cylinder and the steel cylinder between the cement mortar protective course, and the ratio of the wall thickness d of this concrete tube core and the caliber D of this pipe is μ, 1/32≤μ≤1/16; The pitch pitch @mm of reinforcement wire, the diameter of this reinforcement wire is φ mm, 2 φ≤@≤50 wherein, the span of this reinforcement wire diameter phi is 3≤φ≤10.

Framework Of Steel Reinforcement of the present invention can be a prestressed reinforcement framework, also can be non-prestressed reinforcement framework.

Instantiation:

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

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

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

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

Joint socket of the present invention 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 present invention 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 invention 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 1/16 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 tubing gross weight of the present invention 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. steel sleeve reinforced concrete pipe; by bellmouth; socket; the concrete tube core; Framework Of Steel Reinforcement; reinforcement wire and protective layer 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 Framework Of Steel Reinforcement; the two ends of this Framework Of Steel Reinforcement are packed on bellmouth and the socket; the concrete pipe outer core installs a steel cylinder; the outer wall of this steel cylinder installs protective layer and twine reinforcement wire on the steel cylinder outer wall between steel cylinder and the protective layer; the pitch pitch @mm of reinforcement wire; this prestress steel filament diameter is φ mm; 2 φ≤@≤50; it is characterized in that: the ratio of concrete tube core wall thickness d and this tube core inside diameter D is μ, 1/32≤μ≤1/16.

2. steel sleeve reinforced concrete pipe according to claim 1 is characterized in that: described socket outer wall directly upwards is shaped on 1-3 groove.

3. steel sleeve reinforced concrete pipe according to claim 1, it is characterized in that: described Framework Of Steel Reinforcement is made up of N root longitudinal steel bar, this longitudinal steel bar is coaxial uniformly to be inlaid in the concrete pipe in-core, and the two ends of this longitudinal steel bar are packed on bellmouth and the socket 1≤N≤50 respectively.

4. steel sleeve reinforced concrete pipe according to claim 1 is characterized in that: the cylindrical reinforcement frame of described Framework Of Steel Reinforcement for being made up of circumferential reinforcement and longitudinal steel bar.

5. steel sleeve reinforced concrete pipe according to claim 1 is characterized in that: described protective layer is a slush.