Open caisson jacking pipe perforating structure

Abstract

The open caisson pipe-jacking perforation structure comprises an open caisson and a pipe-jacking pipeline, and an open caisson reserved hole is formed between the open caisson and the pipe-jacking pipeline; a pre-buried grouting pipe and a pre-buried steel flange are arranged in the open caisson, the outer side of the open caisson with the pre-buried steel flange is fixedly connected with a pre-buried steel flange anchor bar, the inner side of the open caisson with the pre-buried steel flange is fixedly connected with a welding flange, the welding flange is connected with a rubber flange, an anchor bolt is connected with the rubber flange through a steel pressing plate, and the rubber flange extends into a reserved hole of the open caisson. The open caisson reserved hole is filled with a grouting material filling seam, at least one steel water stop ring is arranged in the grouting material filling seam, a steel water stop sleeve is arranged below the steel water stop ring, and three flexible materials including sealant, asphalt hemp threads and oil hemp are filled between the steel water stop sleeve and the pipe jacking pipeline. According to the utility model, the pipeline displacement requirement when the settlement difference exists between the pipeline and the open caisson is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of building, specifically relates to a top pipe time caisson reserved hole structure method. BACKGROUND

[0002] At present, in the municipal road construction process, the current road cannot be excavated or the pipe is buried deep and cannot be open cut construction, under this condition, the pipe jacking construction is needed, how to solve the waterproof structure of the caisson reserved hole after the pipe jacking and ensure the settlement difference of the caisson and the pipe is worth studying. UTILITY MODEL CONTENTS

[0003] The utility model solves the technical problem that how to solve the waterproof structure of the caisson reserved hole after the pipe jacking and ensure the settlement difference of the caisson and the pipe, and provides a caisson pipe jacking perforation structure.

[0004] The technical scheme of the utility model is specifically as follows:

[0005] A caisson pipe jacking perforation structure, including a caisson and a pipe, a caisson reserved hole between the caisson and the pipe; a pre-buried grouting pipe and a pre-buried steel flange are arranged in the caisson, the caisson outside of the pre-buried steel flange is fixedly connected with a pre-buried steel flange anchor bar, the caisson inside of the pre-buried steel flange is fixedly connected with a welded flange, the welded flange is connected with a rubber flange, an anchor bolt is connected with the rubber flange through a steel pressing plate, and the rubber flange extends into the caisson reserved hole;

[0006] The caisson reserved hole is filled with a grouting material gap filler, at least one steel water stop ring is arranged in the grouting material gap filler, a steel water stop sleeve pipe is arranged below the steel water stop ring, and three flexible materials, namely sealing glue, pitch hemp and oil hemp, are filled between the steel water stop sleeve pipe and the pipe.

[0007] The steel water stop ring and the steel water stop sleeve pipe are welded, and a water-swelling water stop strip is installed outside the steel water stop ring.

[0008] The pre-buried steel flange anchor bar has a diameter of 100 mm.

[0009] The pre-buried grouting pipe has four branches, and each pre-buried grouting pipe comprises a 90° bending part.

[0010] A slot hole is formed in the steel pressing plate, and the anchor bolt is located in the slot hole.

[0011] The rubber flange, the pressing plate and the anchor bolt in the utility model ensure that the pipe and the rubber flange are closely attached during the pipe jacking, and the thixotropic mud does not flow out; the pre-buried grouting pipe, the water stop sleeve pipe, the grouting material and the flexible water stop material are used to fill the gap between the caisson reserved hole and the pipe outer wall after the pipe jacking is completed, and the pipe displacement requirement when there is a settlement difference between the pipe and the caisson is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a top pipe construction hole wall penetration water stop structure.

[0013] Figure 2 is a top pipe construction hole wall penetration water stop structure. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0015] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0016] As shown in Figure 1 A caisson top pipe penetration structure, comprising a caisson and a top pipe 6, a caisson reserved hole 22 between the caisson and the top pipe 6; a pre-buried grouting pipe 8 and a pre-buried steel flange 1 are arranged in the caisson, the caisson outer side 12 of the pre-buried steel flange 1 is fixedly connected with a pre-buried steel flange anchor bar 7, the caisson inner side 13 of the pre-buried steel flange 1 is fixedly connected with a welded flange 2, the welded flange 2 is connected with a rubber flange 3, an anchor bolt 5 is connected with the rubber flange 3 through a steel pressure plate 4, and the rubber flange 3 extends into the caisson reserved hole 22;

[0017] A grouting material joint filler 15 is filled in the caisson reserved hole 22, and at least one steel water stop ring 16 is arranged in the grouting material joint filler 15, a steel water stop sleeve 17 is arranged below the steel water stop ring 16, and three flexible materials, namely sealing glue 18, pitch hemp 19 and oil hemp 20, are filled between the steel water stop sleeve 17 and the top pipe 6.

[0018] Further, the steel water stop ring 16 and the steel water stop sleeve 17 are weldedly connected, and a water-swelling water stop strip 21 is installed outside the steel water stop ring 16.

[0019] Further, the reserved hole wall 14 of the caisson reserved hole 22 is chiseled.

[0020] Further, the diameter of the embedded steel flange anchor 7 is 100 mm.

[0021] Further, there are four embedded grouting pipes 8, and each embedded grouting pipe 8 includes a 90° bending part.

[0022] Further, a slot hole is formed in the steel pressing plate 4, and the anchor bolt 5 is located in the slot hole, so that the steel pressing plate 4 can move up and down conveniently.

[0023] A construction method of a top pipe sinking well reserved hole structure can be implemented according to the following steps:

[0024] The first working condition: the top pipe pipeline 6 construction working condition

[0025] Step one: weld the embedded steel flange anchor 7 to the embedded steel flange 1, and install it in place at the sinking well reserved hole position;

[0026] Step two: install the embedded grouting pipe 8 at the sinking well reserved hole position;

[0027] Step three: pour the sinking well concrete;

[0028] Step four: weld the anchor bolt 5 to the welded flange 2, and then weld the welded flange 2 to the embedded steel flange 1 through fillet welding;

[0029] Step five: install the rubber flange 3 in place, install the steel pressing plate 4, and tighten the anchor bolt 5, wherein the rubber flange 3 is provided with an opening, and the state of the rubber flange 3 after installation is the top pipe front rubber flange overhanging state 9;

[0030] Step six: start the top pipe construction, 11 is the pipe jacking direction, and at this time, the state of the rubber flange 3 is that the rubber flange 3 is tightly attached to the top pipe pipeline 6 state 10.

[0031] The second working condition: the hole plugging working condition after the top pipe pipeline 6 construction is completed

[0032] Step seven: loosen the anchor bolt 5 one by one and adjust the position of the steel pressing plate 4, ensure that the position of the steel pressing plate 4 is aligned with the centripetal side of the hole of the welded flange 2, and then tighten the anchor bolt 5;

[0033] Step eight: firmly weld the steel water stop ring 16 and the steel water stop sleeve pipe 17, install the water-swelling water stop strip 21 outside the two water stop rings, and then insert the water stop sleeve pipe into the sinking well reserved hole 22 as a whole, at this time, the rubber flange 3 is tightly attached to the steel water stop sleeve pipe 17;

[0034] Step nine: fill the remaining sinking well reserved hole 22 position with grouting material through the embedded grouting pipe 8;

[0035] Step ten: fill the sealant 18, the asphalt hemp 19 and the oil hemp 20 between the steel water stop sleeve 17 and the pipe conduit 6.

[0036] The preferred embodiments of the present application have been described above with the preferred embodiments, it should be noted that for those skilled in the art, without departing from the overall concept of the present application, some changes and improvements can be made, which should be considered as the protection scope of the present application.

Claims

1. A perforated structure for caisson jacking pipes, characterized in that: Includes a caisson and a jacking pipe (6), with a reserved hole (22) between the caisson and the jacking pipe (6); a pre-embedded grouting pipe (8) and a pre-embedded steel flange (1) are installed in the caisson, and a pre-embedded steel flange anchor bar (7) is fixedly connected to the outer side (12) of the pre-embedded steel flange (1) in the caisson, and a welded flange (2) is fixedly connected to the inner side (13) of the pre-embedded steel flange (1), and the welded flange (2) is connected to a rubber flange (3), and the anchor bolt (5) is connected to the rubber flange (3) through a steel pressure plate (4), and the rubber flange (3) extends into the reserved hole (22) of the caisson; The reserved hole (22) of the caisson is filled with grout (15), and at least one steel water-stop ring (16) is set in the grout (15). A steel water-stop sleeve (17) is set below the steel water-stop ring (16). Three flexible materials, namely sealant (18), asphalt hemp fiber (19) and oil hemp (20), are filled between the steel water-stop sleeve (17) and the jacking pipe (6).

2. The perforated structure for caisson jacking pipe according to claim 1, characterized in that: The steel water-stop ring (16) is welded to the steel water-stop sleeve (17), and a water-swellable water-stop strip (21) is installed on the outside of the steel water-stop ring (16).

3. The perforated structure for caisson jacking pipe according to claim 1, characterized in that: The diameter of the pre-embedded steel flange anchor bar (7) is 100mm.

4. The perforated structure for caisson jacking pipe according to claim 1, characterized in that: There are four pre-embedded grouting pipes (8), and each pre-embedded grouting pipe (8) includes a 90° bend.

5. The perforated structure for caisson jacking pipe according to claim 1, characterized in that: A slotted hole is made in the steel pressure plate (4), and the anchor bolt (5) is located in the slotted hole.

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