CN202469300U - Connection structure between two grout pipes - Google Patents

Abstract

The utility model discloses a connection structure between two grout pipes. The connection structure comprises two grout pipes (1) to be connected, wherein a connection flange (2) is arranged on the connection ends of the two grout pipes (1) respectively; and the two connection flanges (2) are connected through a bolt (3). The connection structure disclosed by the utility model has the advantages that the grout pipes and the connection flanges are cast and formed at one time, so that the structure is simple; the two grout pipes are anchored through a flange bolt, thus the interface property is good and the construction interference is low; the two grout pipes are in anchoring rigid connection, thus the influence of the grouting pressure is little, and the repeated utilization rate and the grouting guarantee rate are high; a conventional common rubber gasket is adopted for stopping grout (water), and the requirements on material are low; and the field splicing technology is simple and reliable.

Description

A connection structure between two grouting pipes

technical field

The utility model relates to a connection structure between two grouting pipes, which belongs to the technical field of joint connection of repeated grouting pipe joints in the repeated grouting system of roller compacted concrete arch dams or induced joints.

Background technique

RCC arch dams usually use repeated grouting pipes. At present, two grouting pipes are connected together through rubber sleeves, and the shrinkage pressure of the rubber sleeves wraps the ends of the two grouting pipes to form a series connection. The disadvantages of using rubber sleeve connection are as follows: ①The rubber sleeve needs to be preheated and expanded before it can be connected to the grouted steel pipe, which is not convenient for on-site assembly; The connection is prone to misalignment and other phenomena, and the assembly quality is difficult to guarantee; ③The quality requirements of the rubber casing are high, and due to long-term contact with concrete and leaking water, the rubber casing is easy to corrode and age; ④The grouting pressure once or twice in the early stage After the action, the rubber sleeve is prone to fatigue and difficult to reset, resulting in dislocation of the grouting pipe joints and affecting the grouting effect in the later stage.

Contents of the invention

The purpose of the utility model is to provide a connection structure between two grouting pipes. Convenient and reliable assembly, good stress conditions, high pressure bearing performance, good durability, can be widely used in medium and high roller compacted concrete arch dam transverse joints or induced joints repeated grouting joint grouting pipe connection to overcome the shortcomings of the existing technology .

The technical scheme of the utility model:

The connecting structure between two grouting pipes includes two grouting pipes to be connected; the connecting ends of the two grouting pipes are respectively provided with connecting flanges, and the two connecting flanges are connected by bolts.

In the aforementioned connection structure between the two grouting pipes, a gasket is provided between the two connecting flanges.

In the aforementioned connection structure between the two grouting pipes, a group of connection holes uniformly distributed along the connection flanges are provided on the two connection flanges.

In the connection structure between the aforementioned two grouting pipes, the connecting flange and the grouting pipe are integrally formed cast pipes.

In the aforementioned connection structure between the two grouting pipes, the sealing gasket is an annular rubber piece corresponding to the shape of the connecting flange, and the annular surface of the sealing gasket is provided with a through hole corresponding to the connecting hole.

In the connection structure between the aforementioned two grouting pipes, bolts are provided in the connection holes of the two connection flanges and the through holes of the gasket, and the bolts penetrate through the connection holes of the two connection flanges and the through holes of the gasket. Nut threaded connection.

Compared with the prior art, the utility model has the following advantages:

1. The grouting pipe and the connecting flange are casted at one time, and the structure is simple.

2. The two grouting pipes are anchored by flange bolts, with good interface and little interference from construction.

3. The two grouting pipes are anchored and rigidly connected, which is less affected by the grouting pressure, has a high reuse rate and a high grouting guarantee rate.

4. Use conventional ordinary rubber gaskets to stop slurry (water stop), and the material requirements are not high.

5. The on-site assembly process is simple and reliable.

Description of drawings

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

Fig. 2 is the schematic diagram that the utility model is connected together;

Fig. 3 is a schematic diagram of the current connection structure.

The marks in the accompanying drawings are: 1-grouting pipe, 2-connecting flange, 3-bolt, 4-seal, 5-connecting hole, 6-through hole, 7-nut, 8-rubber sleeve.

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments, but not as any limitation to the utility model.

A connection structure between two grouting pipes, as shown in Figure 1 and Figure 2. It includes two grouting pipes 1 to be connected; the connecting ends of the two grouting pipes 1 are respectively provided with connecting flanges 2 , and the two connecting flanges 2 are connected by bolts 3 . A gasket 4 is provided between the two connecting flanges 2 . A group of connecting holes 5 uniformly distributed along the connecting flanges 2 are provided on the two connecting flanges 2 . A cast pipe with an integral structure connecting the flange 2 and the grouting pipe 1. The sealing gasket 4 is an annular rubber piece corresponding to the shape of the connecting flange 2 , and the annular surface of the sealing gasket 4 is provided with a through hole 6 corresponding to the connecting hole 5 . The connecting holes 5 of the two connecting flanges 2 and the through holes 6 of the sealing gasket 4 are provided with bolts 3, and the bolts 3 pass through the connecting holes 5 of the two connecting flanges 2 and the through holes 6 of the sealing gasket 4 and are screwed to the nuts 7 .

The specific implementation process of the utility model

Example. When the utility model is actually implemented, as shown in Figure 1 and Figure 2, the grouting pipe 1 adopts a casting process, and the light pipe part in the middle of the grouting pipe 1 and the connecting flange 2 at the end are cast once, so that the middle of the grouting pipe 1 The light pipe part and the connecting flange 2 at the end are integrated into one. The connecting flange 2 is provided with three connecting holes 5 uniformly distributed along the connecting flange 2 . When two grouting pipes 1 are connected, an annular rubber part is placed between the connecting flanges 2 of the two grouting pipes 1 as a gasket 4, and the gasket 4 is provided with a through hole 6 corresponding to the connecting flange 2, Then use three bolts 3 to pass through the connecting holes 5 of the two connecting flanges 2 and the through holes 6 of the gasket 4, and screw the nuts 7 on the threaded ends of the bolts 3 to tightly connect the two grouting pipes 1 together.

Fig. 3 is the current connection structure of two grouting pipes. The two grouting pipes are connected together through the rubber sleeve 8, and the shrinkage pressure of the rubber sleeve 8 wraps the ends of the two grouting pipes to form a series connection. The disadvantages of using rubber sleeve connection are as follows: ①The rubber sleeve needs to be preheated and expanded before it can be connected to the grouted steel pipe, which is not convenient for on-site assembly; The connection is prone to misalignment and other phenomena, and the assembly quality is difficult to guarantee; ③The quality requirements of the rubber casing are high, and due to long-term contact with concrete and leaking water, the rubber casing is easy to corrode and age; ④The grouting pressure once or twice in the early stage After the action, the rubber sleeve is prone to fatigue and difficult to reset, resulting in dislocation of the grouting pipe joints and affecting the grouting effect in the later stage.

Claims (6)

1. The connection structure between two grouting pipes, including the two grouting pipes (1) to be connected; the characteristic is that: the connecting ends of the two grouting pipes (1) are respectively provided with connecting flanges (2), and the two The connecting flanges (2) are connected by bolts (3). 2. The connection structure between two grouting pipes according to claim 1, characterized in that: a gasket (4) is provided between the two connection flanges (2). 3. The connection structure between two grouting pipes according to claim 2, characterized in that: the two connecting flanges (2) are provided with a group of connecting holes ( 5). 4. The connection structure between two grouting pipes according to claim 3, characterized in that: the connecting flange (2) and the grouting pipe (1) are cast pipes with an integrated structure. 5. The connection structure between two grouting pipes according to claim 4, characterized in that: the gasket (4) is an annular rubber piece corresponding to the shape of the connecting flange (2), and the gasket (4) A through hole (6) corresponding to the connection hole (5) is provided on the annular surface of the shaft. 6. The connection structure between two grouting pipes according to claim 5, characterized in that: the connection holes (5) of the two connection flanges (2) and the through holes (6) of the gasket (4) Bolts (3) are arranged in the middle, and the bolts (3) run through the connecting holes (5) of the two connecting flanges (2) and the through holes (6) of the gasket (4) and are threadedly connected with the nuts (7).

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