Steel sheet pile working well opening water stop structure

Abstract

The utility model discloses a steel sheet pile working well opening water stop structure which comprises a concrete water stop wall and a combined water stop device, the combined water stop device comprises a pre-buried steel ring plate, a rubber water stop ring, a steel pressing ring plate, a pre-buried bolt and a nut, the concrete water stop wall is poured on the inner side of a steel sheet pile support, and the rubber water stop ring is arranged on the inner side of the steel sheet pile support. The embedded bolt and the embedded steel ring plate are both embedded in the concrete water-stop wall, the rubber water-stop ring is fixedly pressed on the concrete water-stop wall through the steel pressing ring plate and a nut matched with the embedded bolt, and the inner diameter of the rubber water-stop ring is smaller than the outer diameter of the jacking round pipe. According to the water stop structure for the steel sheet pile working well opening, the steel sheet pile does not need to be drilled or welded, the combined water stop device is fixed through the additionally-arranged concrete water stop wall, the stability of the combined water stop device is improved, the probability of water seepage and water leakage caused by deformation of the water stop device in the jacking process is reduced, and the good water stop effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to top pipe engineering construction technical field especially provides a kind of steel sheet pile working well hole water stop structure. BACKGROUND

[0002] With the acceleration of urbanization and the improvement of residents' living standards, the demand for municipal pipe network engineering is also increasing. When the pipeline passes through important buildings, highways, railways and other nodes, the pipe jacking method is the most common construction method. Before pipe jacking construction, a working well needs to be excavated, and steel sheet pile support is widely used because of its convenient construction. The steel sheet pile working well needs to reserve a jacking hole and install a water stop device. However, if the water stop device is installed on the steel sheet pile by drilling or welding, it will be under great stress during construction, and there is a risk of seepage and leakage during jacking due to deformation of the water stop device.

[0003] Therefore, how to improve the water stop device installed on the reserved hole of the steel sheet pile working well to prevent groundwater, mud and thixotropic mud from flowing into the working well and ensure construction safety has become a problem to be solved. SUMMARY

[0004] Therefore, the utility model aims to provide a kind of steel sheet pile working well hole water stop structure, which is more stable, safe and ensures construction quality.

[0005] The utility model provides a technical scheme: a kind of steel sheet pile working well hole water stop structure, fixedly set in the inside of steel sheet pile working well, wherein, the steel sheet pile working well includes steel sheet pile support, jacking round pipe, distribution beam and concrete slide plate, the first reserved hole corresponding with the jacking round pipe is arranged on the steel sheet pile support, the diameter of the first reserved hole is greater than the outer diameter of the jacking round pipe, the steel sheet pile working well hole water stop structure includes: concrete water stop wall and combined water stop device, the combined water stop device includes embedded steel ring plate, rubber water stop ring, steel pressing ring plate, embedded bolt and nut, the concrete water stop wall is poured in the inside of the steel sheet pile support, the second reserved hole corresponding with the first reserved hole is arranged on the concrete water stop wall, the embedded bolt and embedded steel ring plate are both embedded in the concrete water stop wall, the embedded bolt protrudes out of the concrete water stop wall after penetrating the embedded steel ring plate, the rubber water stop ring is installed on the embedded bolt and fixed and pressed on the concrete water stop wall by the steel pressing ring plate and nut, the inner diameter of the rubber water stop ring is less than the outer diameter of the jacking round pipe, for interference fit with the jacking round pipe.

[0006] Preferably, the size of the second reserved hole is the same as that of the first reserved hole.

[0007] Further preferably, the thickness of the concrete water stop wall is 300 mm.

[0008] Further preferably, the pre-embedded steel ring plate has the same structure as the steel pressing ring plate and has an inner diameter greater than the jacking pipe.

[0009] Further preferably, the pre-embedded steel ring plate, the rubber water stop ring and the steel pressing ring plate are all provided with pre-embedded bolt holes corresponding to the pre-embedded bolts in the circumferential direction.

[0010] Further preferably, the rubber water stop ring is in the shape of a circular ring.

[0011] Further preferably, the pre-embedded bolt is an M20 bolt.

[0012] The steel sheet pile working well opening water stop structure provided by the utility model can be applied to jacking pipe construction, does not need to drill or weld the steel sheet pile, and through the fixed combination water stop device of the added concrete water stop wall, the stability of the combination water stop device is improved, the probability of seepage and leakage due to deformation of the water stop device in the jacking process is reduced, and good water stopping effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model will be explained further in detail in combination with the drawings and the embodiments:

[0014] Figure 1 The elevation structure schematic view of the steel sheet pile working well opening water stop structure provided by the utility model is shown in the figure;

[0015] Figure 2 The Figure 1 The enlarged view of the middle A.

[0016] In the figure, 1 is a steel sheet pile support, 2 is a jacking pipe, 3 is a distribution beam, 4 is a concrete sliding plate, 5 is a concrete water stop wall, 7 is a pre-embedded steel ring plate, 8 is a rubber water stop ring, 9 is a steel pressing ring plate, 10 is a pre-embedded bolt, and 11 is a nut. DETAILED DESCRIPTION

[0017] The utility model will be explained further in detail in combination with the drawings and the embodiments:

[0018] For example, Figure 1 , Figure 2The utility model provides a steel sheet pile working well hole water stop structure, fixedly set in the inside of steel sheet pile working well, wherein, the steel sheet pile working well includes steel sheet pile support 1, jacking round pipe 2, distribution beam 3 and concrete slide 4, is provided with the first reserved hole mouth that corresponds with jacking round pipe 2 on steel sheet pile support 1, the diameter of first reserved hole mouth is greater than the outer diameter of jacking round pipe 2, and the steel sheet pile working well hole water stop structure includes: concrete water stop wall 5 and combined water stop device, the combined water stop device includes embedded steel ring plate 7, rubber water stop ring 8, steel pressure ring plate 9, embedded bolt 10 and nut 11, the inside of concrete water stop wall 5 is poured in the inside of steel sheet pile support 1, is provided with the second reserved hole mouth that corresponds with first reserved hole mouth on concrete water stop wall 5, embedded bolt 10 and embedded steel ring plate 7 are all embedded in concrete water stop wall 5, embedded bolt 10 is stretched out after penetrating embedded steel ring plate 7 concrete water stop wall 5, rubber water stop ring 8 is installed on embedded bolt 10 and is fixedly pressed on concrete water stop wall 5 through steel pressure ring plate 9 and nut 11, the inner diameter of rubber water stop ring 8 is less than the outer diameter of jacking round pipe 2, is used for with jacking round pipe 2 interference fit, and rubber water stop ring is tightly attached to jacking round pipe in the jacking process, and the water stop effect can be guaranteed.

[0019] The steel sheet pile working well hole water stop structure avoids the direct connection of the water stop device with the steel sheet pile, and does not need to drill holes or perform welding operations on the steel sheet pile, so that the underground water, mud and the like can be prevented from entering the working well by the added water stop wall and the combined water stop device, the working well meets the engineering requirements, the water stop effect is good, and the steel sheet pile working well hole water stop structure has good popularization and application value.

[0020] As an improvement of the technical scheme, the size of the second reserved hole is the same as that of the first reserved hole, preferably, the diameter of the reserved hole is D+200mm of the outer diameter of the jacking round pipe.

[0021] As an improvement of the technical scheme, the thickness of the concrete water stop wall is not less than 300mm, preferably 300mm, the thickness of the concrete water stop wall should not be too thick, otherwise the available area in the working well will be reduced, which is not conducive to personnel construction, and unnecessary investment is increased, meanwhile, the thickness of the concrete water stop wall should not be too thin, otherwise the strength is too low and damage is prone to occur, the height of the concrete water stop wall 5 can be adjusted according to the outer diameter D of the jacking round pipe 2, but should not be less than 2m.

[0022] As an improvement to the technical solution, the pre-embedded steel ring plate 7 and the steel pressure ring plate 9 have the same structure and the inner diameter is larger than that of the jacking circular pipe 2. Preferably, both the pre-embedded steel ring plate 7 and the steel pressure ring plate 9 are circular in shape. The inner diameter of the circular ring is the outer diameter D+200mm of the jacking circular pipe 2, the outer diameter of the circular ring is the outer diameter D+500mm of the jacking circular pipe 2, and the thickness is 20mm, which has sufficient strength and improves practicality.

[0023] As an improvement to the technical solution, the pre-embedded steel ring plate 7, the rubber waterstop ring 8 and the steel pressure ring plate 9 are all provided with reserved bolt holes corresponding to the pre-embedded bolts 10 along the circumference. The reserved bolt holes of the three are in corresponding positions, and the number is preferably 24, which are arranged in a uniform ring.

[0024] As an improvement to the technical solution, the rubber waterstop ring 8 is in the shape of a ring. Preferably, the inner diameter of the ring is the outer diameter D of the jacking pipe 2, which is 200mm, and the outer diameter of the ring is the outer diameter D of the jacking pipe 2, which is 500mm. The thickness is 20mm. Preferably, the rubber waterstop ring is made from a single piece of rubber sheet.

[0025] As an improvement to the technical solution, the pre-embedded bolt 10 is an M20 bolt. Preferably, the length of the pre-embedded bolt extending into the concrete waterstop wall is not less than 25cm.

[0026] The construction steps for the entire steel sheet pile working well and the water-stop structure at the opening are as follows:

[0027] Step 1: First, excavate the working well, drive steel sheet piles for support 1, and pour concrete sliding plate 4, as follows. Figure 1 As shown, the working shaft includes sheet pile support 1, jacking pipe 2, distribution beam 3, and concrete sliding plate 4. To ensure smooth entry and exit of the jacking pipe 2, an opening is reserved on the sheet pile support 1 opposite the distribution beam 3, with the opening diameter being the outer diameter D of the jacking pipe 2 + 200mm.

[0028] Step 2: Concrete waterstop wall 5: In order to ensure the installation of the combined waterstop device firmly, when pouring the concrete waterstop wall 5, the pre-embedded steel ring plate 7 and pre-embedded bolts 10 are installed inside it in advance. After the installation is completed, the concrete is poured. The size of the reserved opening on the concrete waterstop wall 5 is the same as the size of the reserved opening of the steel sheet pile support 1. The thickness of the concrete waterstop wall 5 is not less than 300mm and the height is not less than 2m. Preferably, the reserved opening of the concrete waterstop wall 5 is reinforced with reinforcing ring bars.

[0029] Step 3: Install the combined water-stopping device: such as Figure 2As shown, after the concrete waterproof wall 2 is poured and reaches a certain strength, the prepared rubber waterproof ring 8 is installed on the embedded bolt 10, and then the steel pressing ring plate 9 is installed, and when installing, the rubber waterproof ring 8 is ensured to be closely combined with the concrete waterproof wall 5, finally, the exposed end of the embedded bolt 10 is screwed with the nut 11 to be firmly fixed, the combined waterproof device is installed, and the waterproof effect can be played to prevent the working well hole from leaking water and sand.

[0030] The detailed implementation manners of the present application are written in a progressive manner, and the differences of various implementation manners are emphasized, and the similar parts can be mutually referred.

[0031] The implementation manners of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above-mentioned implementation manners, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the purpose of the present application.

Claims

1. A steel sheet pile caisson opening water stop structure fixedly provided inside a steel sheet pile caisson, wherein, The steel sheet pile working well comprises a steel sheet pile support (1), a jacking round pipe (2), a distribution beam (3) and a concrete sliding plate (4), the steel sheet pile support (1) is provided with a first reserved opening corresponding to the jacking round pipe (2), the diameter of the first reserved opening is greater than the outer diameter of the jacking round pipe (2), characterized in that the steel sheet pile working well opening water stop structure comprises a concrete water stop wall (5) and a combined water stop device, the combined water stop device comprises a pre-buried steel ring plate (7), a rubber water stop ring (8), a steel pressing ring plate (9), a pre-buried bolt (10) and a nut (11), the concrete water stop wall (5) is poured on the inner side of the steel sheet pile support (1), the concrete water stop wall (5) is provided with a second reserved opening corresponding to the first reserved opening, the pre-buried bolt (10) and the pre-buried steel ring plate (7) are both pre-buried in the concrete water stop wall (5), the pre-buried bolt (10) penetrates through the pre-buried steel ring plate (7) and extends out of the concrete water stop wall (5), the rubber water stop ring (8) is installed on the pre-buried bolt (10) and is fixed and pressed on the concrete water stop wall (5) through the steel pressing ring plate (9) and the nut (11), the inner diameter of the rubber water stop ring (8) is smaller than the outer diameter of the jacking round pipe (2) and is used for interference fit with the jacking round pipe (2).

2. The water-tight structure for a steel sheet pile caisson working well opening according to claim 1, characterized by: The second reserved opening has the same size as the first reserved opening.

3. The water-tight structure for a steel sheet pile caisson working well opening according to claim 1, characterized by: The thickness of the concrete water stop wall (5) is 300 mm.

4. The water-tight structure for a caisson of a steel sheet pile cofferdam according to Claim 1, characterized in that: The pre-buried steel ring plate (7) has the same structure as the steel pressing ring plate (9) and has an inner diameter greater than the jacking round pipe (2).

5. A steel sheet pile coffer opening waterstop structure according to claim 1, characterized in that: The pre-buried steel ring plate (7), the rubber water stop ring (8) and the steel pressing ring plate (9) are all provided with a reserved bolt hole corresponding to the pre-buried bolt (10) in the circumferential direction.

6. A steel sheet pile coffer opening waterstop structure according to claim 1, characterized by: The rubber water stop ring (8) is in the shape of a circular ring.

7. A water-tight structure for a caisson of a steel sheet pile cofferdam according to claim 1, characterized in that: The pre-buried bolt (10) is an M20 bolt.

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