CN2688769Y - Reinforced thermosetting resin sanding inclusing jacking pipe with fibre winding - Google Patents

Abstract

A fiber-wound reinforced thermosetting resin sand-infused grouting type pipe jacking. Connecting ends are arranged at one end, and a grouting hole is arranged at one of the connecting ends. The stiffness layer is composed of resin matrix, fiber and quartz sand filler; the connection end is composed of resin matrix, fiber and unidirectional fiber fabric, or is composed of resin matrix, fiber and unidirectional fiber fabric and quartz mortar Composite composition. A sealing groove is provided on the peripheral surface of each connecting end; the connecting ends of the two pipes are sealed and connected by a steel collar and a sealing ring. The connection method is a socket connection, which has high mechanical strength, simple operation, convenient and quick construction, and no special equipment is required. The inner lining of the utility model plays the role of anti-corrosion and anti-seepage, the inner winding layer, the rigidity layer and the outer winding layer effectively ensure the strength and stiffness of the pipeline, and the outer protective layer makes anti-aging, corrosion resistance, and reduces the frictional resistance between the pipeline and the soil effect is greatly enhanced.

Description

Filament winding reinforced thermosetting resin grouting pipe jacking

technical field

The utility model relates to a pipe, in particular to a fiber-wound reinforced thermosetting resin grouting type jacking pipe, which is mainly used for unconditional ground excavation and various complex geological conditions in the field of water supply and drainage.

Background technique

Existing pipe jacking of this type generally adopts steel pipes or concrete pipes. Its disadvantages are that it is bulky, not easy to hoist and lower the pipe; it is easy to age and has poor corrosion resistance; the friction resistance between the inner and outer surfaces of the pipe and the soil is large, and it is prone to pipe holding and dead pipe; the sealing of the connection end is poor, and it is prone to leakage.

Contents of the invention

The purpose of this utility model is to provide a fiber-wound reinforced thermosetting resin sand-infused grouting type pipe jacking to solve the problems in the prior art that the pipe body is bulky, the hoisting and lowering of the pipe is difficult, it is easy to age, and its corrosion resistance is poor, and it is easy to appear The phenomenon of tube holding and dead tube, the poor sealing of the connection end and the problem of leakage are easy to occur.

The technical scheme of the utility model is: comprising a pipe body, the pipe body wall includes an inner lining layer, an inner winding layer, a rigidity layer, an outer winding layer and an outer protective layer compounded sequentially from the inside to the outside, and at both ends of the pipe body Connecting ends are provided, and a grouting hole is arranged at one of the connecting ends.

The stiffness layer of the pipe body is composed of resin matrix, fiber and quartz sand filler; the connecting ends of the two ends of the pipe body are composed of resin matrix, fiber and unidirectional fiber fabric.

The stiffness layer of the pipe body is composed of resin matrix, fiber and quartz sand filler; the connecting ends of the two ends of the pipe body are composed of resin matrix, fiber, unidirectional fiber fabric and quartz mortar layer.

A sealing groove is provided on the peripheral surface of each connecting end, and a grouting hole is provided at one of the connecting ends; the connecting ends of the two pipes are sealed and connected by a steel collar and a sealing ring, and a socket type There are sealing rings in the sealing grooves at the two connecting ends.

One of the sealing rings is a water-swellable rubber sealing ring with an oval cross-section, and the other is a rubber sealing ring with a wedge-shaped cross-section.

The inner lining of the utility model plays the role of anti-corrosion and anti-seepage, the inner winding layer, the rigidity layer and the outer winding layer effectively ensure the strength and stiffness of the pipeline, and the outer protective layer makes anti-aging, corrosion resistance, and reduces the frictional resistance between the pipeline and the soil effect is greatly enhanced. The utility model distributes the high-strength fiber winding layer on the inner layer and the outer layer subjected to the greatest bending stress, which is a very economical and reasonable structure. Specifically, it has the following advantages:

1. Light weight: 1/10 of concrete pipes and 1/4 of steel pipes. Due to the light weight, the occurrence of uneven settlement of the entire pipeline is avoided, and because of the small jacking force requirement, it is easier to correct the deviation of the pipeline;

2. It has low requirements on foundation conditions and hoisting and pipe lowering equipment, and the construction is convenient and fast;

3. The inner wall is smooth and the flow rate is large. When the flow rate is determined, a pipe with a diameter grade 1 to 2 smaller than other pipes can be selected, and the cost can be greatly reduced;

4. The surface is smooth, and the cohesive force of the soil has little effect on the pipe, so it is not easy to cause the phenomenon of pipe holding and dead pipe. The single jacking length is long, and the requirements for jacking equipment are low;

5. The connection end has good sealing performance and high connection strength.

Description of drawings

Fig. 1 is the general structure schematic diagram of pipe body of the present utility model;

Fig. 2 is the enlarged view of place A in Fig. 1;

Fig. 3 is the enlarged view of place B in Fig. 1;

Fig. 4 is a partial cross-sectional view of the connection ends of the utility model;

Fig. 5 is a partial sectional view of the pipe body of the present invention.

Detailed ways

Referring to Figures 1 to 5, the utility model includes a pipe body 1, which is composed of an inner lining layer 11, an inner winding layer 12, a stiffness layer 13, an outer winding layer and 14, and an outer protective layer sequentially compounded from the inside to the outside. 15 composite structure, connecting ends are provided at both ends of the pipe body 1, and a grouting hole 8 is provided at one of the connecting ends (the left end, that is, the end that advances when jacking in). The connected slurry pipe extrudes the slurry from the inside of the pipe to lubricate the outside of the pipe body, which can greatly reduce the friction resistance between the outer wall of the pipe and the soil, realize a long jacking distance at one time, a small number of working wells, and lower construction costs than other pipes specialty. The arrows in Figure 1 indicate the jacking direction of the pipeline during use.

The stiffness layer of the pipe body 1 is composed of resin matrix, fiber and quartz sand filler; the connecting ends of the pipe body 1 are made of resin matrix, fiber and unidirectional fiber fabric, or are made of resin matrix, fiber It is composed of unidirectional fiber fabric and quartz mortar layer. Sealing grooves 2 and 3 are provided on the peripheral surface of each connecting end.

Referring to Fig. 4, when the pipe bodies 1 of the present utility model are connected to each other, the connecting ends of the two pipes are sealed and connected by the steel collar 6 and the sealing rings 4 and 5, and the steel collar 6 is set on the outside of the two connecting ends and adopts The sealing ring is connected in a socket type, and a water-swellable rubber sealing ring 4 with an oval cross-section is provided in the sealing groove 3 on the left; a rubber sealing ring 5 with a wedge-shaped cross-section is provided in the sealing groove 2 on the right. This connection is a socket-type sealed connection. The sealing performance of the connection end is more reliable than other connection methods, and it has high mechanical strength, simple operation, convenient and quick construction, and can be constructed without special equipment. A grouting drag-reducing annular space 7 is formed between the inner side of the steel collar 6 and the peripheral surface of the outer end of the grouting hole 8 at the right connecting end.

Claims (5)

1, a kind of fiber twines and strengthens thermosetting resin sand inclusion slip casting formula push pipe; comprise body; it is characterized in that: described tube body wall comprises compound successively from inside to outside inner liner, inner winding layer, stiffness layer, outside winding layer and outer protection layer; be provided with link at the body two ends, a link is provided with injected hole therein.

2, fiber according to claim 1 twines and strengthens thermosetting resin sand inclusion slip casting formula push pipe, it is characterized in that: the stiffness layer of described body is made of resin matrix, fiber and quartz sand filler mixing; The link at described body two ends is made of resin matrix, fiber and unidirectional fabric coiling.

3, fiber according to claim 1 twines and strengthens thermosetting resin sand inclusion slip casting formula push pipe, it is characterized in that: the stiffness layer of described body is made of resin matrix, fiber and quartz sand filler mixing; The link at described body two ends is by resin matrix, fiber and unidirectional fabric and the quartz mortar layer is compound constitutes.

4, twine enhancing thermosetting resin sand inclusion slip casting formula push pipe according to claim 1,2 or 3 described fibers, it is characterized in that: the side face at described each link is equipped with seal groove, and a link is provided with injected hole therein; Be tightly connected by steel collar and sealing ring between the link of two pipelines, and adopt bayonet joint, in the seal groove of two links, respectively be provided with sealing ring.

5, fiber according to claim 4 twines and strengthens thermosetting resin sand inclusion slip casting formula push pipe, and it is characterized in that: one of described sealing ring is the hydro-expansive rubber sealing ring of elliptic cross-section, and another root is a wedge type cross section rubber seal.

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