Construction method for preventing leakage of soft soil foundation socket reinforced concrete pipeline

Abstract

The application discloses a construction method for preventing leakage of a soft soil foundation socket reinforced concrete pipeline, which is suitable for carrying out pressure grouting sealing treatment on the socket by arranging an exhaust port and a grouting hole at the pipeline socket, and the inner ring and the outer ring of the pipeline are both provided with sealing rings, so that the sealing rings are kept in a compressed state during the pressure grouting process, and a concrete occlusion structure is formed between the socket and the plug after the pressure grouting (micro-expansion mortar) is completed, the sealing rings are kept in a compressed state, and the leakage of water is prevented. During the pressure grouting process, the sealing rings are compressed by pulling corresponding positioning rings horizontally through steel wires, the steel wires pass through the guide holes of the positioning rings fixed in the pipelines to be installed and the installed pipelines, the pipelines to be installed and the installed pipelines are horizontally butted through pulling the pipelines to be installed in the installed pipelines, and the sealing rings are kept in a compressed state during the pressure grouting process through a one-way switch.

Description

TECHNICAL FIELD

[0001] The present application relates to pipeline laying technology, in particular to a construction method for preventing leakage of a reinforced concrete pipeline with a socket on a soft soil foundation. BACKGROUND

[0002] With the development of urbanization construction, the number of municipal engineering is growing rapidly, among which the sewage pipeline engineering is an important part. At present, the socket pipe with no socket joint is common in pipeline construction. The socket joint relies on rubber ring and outer triangular strip for leakage prevention. On the one hand, the outer edge of the triangular strip is obliquely intersected with the socket, which is easy to cause gaps between the triangular strip and the pipe body. On the other hand, the pipeline has no longitudinal fixation constraint and is easy to loosen. Furthermore, the socket is often not airtight, and the groundwater infiltration can easily cause sewage leakage, which will seriously affect the basic structure of the pipeline after long-term effect. SUMMARY

[0003] The technical problem to be solved by the present application is that the existing sewage pipeline socket is not airtight, and groundwater infiltration can easily cause sewage leakage, which will seriously affect the basic structure of the pipeline after long-term effect.

[0004] In order to solve the above technical problems, the inventors have summarized and obtained the technical scheme of the present application through practice. The present application adopts the following technical scheme:

[0005] A construction method for preventing leakage of a reinforced concrete pipeline with a socket on a soft soil foundation, comprising a reinforced concrete pipeline, and the construction method is as follows:

[0006] Step one: production of the pipeline

[0007] The reinforced concrete pipeline is prefabricated in the factory according to the design drawing requirements. One end of the reinforced concrete pipeline is provided with a socket one and a plug one, and the other end is provided with a plug two matched with the socket one and a socket two matched with the plug one. A sealing ring is arranged on the reinforced concrete pipeline outside the plug one and inside the plug two. An exhaust port at the top and a grouting hole at the bottom are arranged on the reinforced concrete pipeline inside and outside. Pre-buried threaded sleeves are arranged on the outside and the inside of the reinforced concrete pipeline. The pre-buried threaded sleeve on the outside is suitable for installing a lifting ring, and the pre-buried threaded sleeve on the inside is suitable for installing an auxiliary installation tool.

[0008] Step two: production of the auxiliary installation tool

[0009] The auxiliary installation tool comprises a positioning ring with a size smaller than the inner diameter of the reinforced concrete. A plurality of mounting seats are slidably installed on the positioning ring. The mounting seats are suitable for being connected and fixed by bolts and pre-buried threaded sleeves. A guide hole is arranged on the positioning ring, and a steel wire rope is suitable for being installed in the guide hole.

[0010] Step three: hoisting of the pipeline

[0011] The auxiliary installation tool is installed inside the installed and to-be-installed reinforced concrete pipeline, a wire rope is installed in the guide hole on the positioning ring on the to-be-installed auxiliary installation tool, the wire rope at the to-be-inserted end is freely dropped, the other end is provided with a ring buckle, the wire rope is two sections, and the two connecting sections are detachably installed through the inner threaded sleeve and the outer threaded sleeve, a lifting ring is installed in the outer pre-buried threaded sleeve, and the reinforced concrete pipeline is hoisted through hoisting equipment;

[0012] The freely dropped end of the wire rope falls into the guide hole of the auxiliary installation tool capable of being inserted into the installed reinforced concrete pipeline, the horizontal transverse insertion is completed by manually pulling the wire rope in the reinforced concrete pipeline in cooperation with the hoisting equipment during the falling process of the to-be-installed reinforced concrete pipeline, the spigot one and the socket two are matched, the socket one and the spigot two are matched, and the sealing ring is forced to be in a compressed state, so that the to-be-installed reinforced concrete pipeline meets the slope requirement of the design drawing;

[0013] Step four: grouting

[0014] Grouting is performed through the grouting hole to the gap between the spigot one and the socket two matching area and the gap between the socket one and the spigot two matching area, the grouting is stopped when the mortar overflows from the exhaust port, the grouting hole is blocked with a blocking iron sheet, the blocking iron sheet is removed after the final setting period of the mortar ends, the mortar is micro-expanding mortar, and the wire rope is ensured not to be loosened during the grouting process and before the final setting period ends.

[0015] Step five: removing the auxiliary installation tool

[0016] The two connecting sections of the wire rope are separated by the inner threaded sleeve and the outer threaded sleeve, the connecting section without the ring buckle is pulled out, the bolts of the mounting seat on the positioning ring are removed, and the auxiliary installation tool is removed.

[0017] Preferably, the outer top and the inner bottom of the spigot one are both provided with a bevel.

[0018] Preferably, the inner circumferential surface of the spigot one is provided with a limiting groove one, and the outer circumferential surface is provided with a limiting groove two, the depth of the limiting groove one gradually decreases from bottom to top, and the depth of the limiting groove two gradually increases from top to bottom.

[0019] Preferably, the root of the spigot two is provided with an inwardly recessed connection ring groove.

[0020] Preferably, a one-way switch is arranged on the positioning ring adapted to pass through the connecting section of the wire rope without the ring buckle, and the one-way switch is adapted to pass through the wire rope and the threaded sleeve connecting the two threaded sections in one direction.

[0021] Preferably, the one-way switch comprises a mounting plate provided with a through hole suitable for being fixed by bolts, the mounting plate is installed on the side of the positioning ring opposite to the area of the reinforced concrete pipe socket, a mounting sleeve is installed on the side of the mounting plate opposite to the positioning ring, a rotating pawl is installed in the mounting sleeve in a circumferential direction, and a spring is arranged between the pawl and the mounting sleeve.

[0022] Compared with the prior art, the present application has the following beneficial effects:

[0023] The present application is suitable for grouting sealing treatment of the socket by setting the exhaust port and the grouting hole at the pipe socket, and the sealing ring is in a compressed state during the grouting process because the inner ring and the outer ring of the pipe are both provided with the sealing ring. After the grouting (micro-expanding mortar), a concrete engagement structure is formed between the spigot and the socket, and the sealing ring is in a compressed state to prevent water leakage. During the grouting process, the sealing ring is compressed by pulling the corresponding positioning ring horizontally by a steel wire rope, the steel wire rope penetrates the guide hole of the positioning ring fixed in the installed pipe and the pipe to be installed, and the horizontal butt joint socket can be realized by pulling the pipe to be installed in the installed pipe, and the sealing ring is always in a compressed state during the grouting process by the one-way switch.

[0024] The innovation of the present application is:

[0025] 1) The new socket structure provided with the exhaust port and the grouting hole, the sealing ring, the limiting groove one, the limiting groove two and the linking ring groove can complete the sealing installation and the concrete engagement structure after grouting to ensure the sealing installation of the socket;

[0026] 2) The auxiliary installation tool provided with the positioning seat, the positioning ring and the steel wire rope can complete the assembly of the socket by pulling the positioning ring in the pipe to be installed horizontally, and ensure that the sealing ring is always in a sealed state during the grouting process and the structural strength after the mortar is finally cured. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the overall structure schematic diagram before grouting of the present application;

[0028] Figure 2 It is the partial sectional view of the auxiliary installation tool of the present application;

[0029] Figure 3 It is Figure 2 The structure schematic diagram of the one-way switch in the present application;

[0030] Figure 4 It is the connection relationship diagram of the positioning ring and the mounting seat in the pipe to be installed;

[0031] Figure 5 The connection relationship diagram of the positioning ring and the mounting seat located inside the installed pipeline;

[0032] Figure 6 The overall structure diagram after grouting of the present application.

[0033] In the figure:

[0034] 1, reinforced concrete pipeline; 2, socket one; 3, plug one; 4, plug two; 5, socket two; 6, sealing ring; 7, exhaust port; 8, grouting hole; 9, pre-buried threaded sleeve; 10, lifting ring; 11, positioning ring; 12, mounting seat; 13, steel wire rope; 14, guide hole; 15, mounting sleeve; 16, pawl; 17, spring; 18, mounting plate; 19, limiting groove one; 20, limiting groove two; 21, connection ring groove; DETAILED DESCRIPTION

[0035] 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 some of the embodiments of the present application, not all the embodiments.

[0036] 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 based on 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 therefore cannot be understood as indicating or implying 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 limiting the present application.

[0037] Embodiment 1, as shown in the figure, a construction method for improving the connection quality of a socket reinforced concrete pipeline, comprising a reinforced concrete pipeline 1, the construction method is as follows: Figures 1 to 6

[0038] Step one: pipeline production

[0039] The reinforced concrete pipeline 1 is prefabricated in the factory according to the design drawing requirements, one end of the reinforced concrete pipeline 1 is provided with a socket one 2 and a plug one 3, the other end is provided with a plug two 4 matched with the socket one 2 and a socket two 5 matched with the plug one 3, the reinforced concrete pipeline 1 located outside the plug one 3 and inside the plug two 4 is provided with a sealing ring 6, the reinforced concrete pipeline 1 located inside the socket two 5 is provided with an exhaust port 7 located at the top and a grouting hole 8 located at the bottom, pre-buried threaded sleeves 9 are provided on the outside and inside of the reinforced concrete pipeline 1, the pre-buried threaded sleeves 9 on the outside are suitable for installing a lifting ring 10, and the pre-buried threaded sleeves 9 on the inside are suitable for installing auxiliary installation tools;

[0040] Step two: auxiliary installation tool production​

[0041] The auxiliary installation tool includes a positioning ring 11 with a size smaller than the inner diameter of the reinforced concrete. Multiple mounting seats 12 are slidably installed on the positioning ring 11. The mounting seats 12 are suitable for connection and fixation by bolts and pre-embedded threaded sleeves 9. The positioning ring 11 is provided with a guide hole 14, which is suitable for installing a steel wire rope 13.

[0042] Step 3: Pipeline hoisting

[0043] An auxiliary installation tool is installed inside the reinforced concrete pipe 1 that has been installed and is to be installed. A steel wire rope 13 is installed in the guide hole 14 on the positioning ring 11 of the auxiliary installation tool to be installed. The steel wire rope 13 located at the end to be inserted hangs freely, and a ring is provided at the other end. The steel wire rope 13 is in two sections and the two sections are connected by an internal threaded sleeve and an external threaded sleeve for detachable installation. A lifting ring 10 is installed in the pre-embedded threaded sleeve on the outside. The reinforced concrete pipe 1 is lifted by a lifting device.

[0044] The end of the freely hanging steel wire rope 13 is inserted into the guide hole 14 of the auxiliary installation tool that can be inserted into the installed reinforced concrete pipe 1. The steel wire rope 13 is pulled manually inside the reinforced concrete pipe 1 in conjunction with the lifting equipment to lower the reinforced concrete pipe 1 to complete the horizontal transverse insertion, and complete the adaptation of socket 1 2 and plug 2 4, plug 1 3 and socket 2 5. At the same time, the sealing ring 6 is forced into a compressed state to ensure that the reinforced concrete pipe 1 to be installed meets the slope required by the design drawings.

[0045] Step 4: Grouting

[0046] Grouting is performed through grouting hole 8 into the gap between the socket 1 2 and plug 2 4 and the gap between plug 1 3 and socket 2 5 located between the two sealing rings 6. Grouting is stopped when mortar overflows from vent 7. The grouting hole 8 is sealed with a sealing iron plate. The sealing iron plate is removed after the mortar has finished setting. The mortar is micro-expansion mortar. During the grouting process and before the end of the final setting period, the steel wire rope 13 is ensured not to loosen.

[0047] Step 5: Remove auxiliary installation tools

[0048] The two connecting sections of the wire rope 13 are separated by an internal threaded sleeve and an external threaded sleeve. The connecting section without a ring is pulled out, the bolts of the mounting seat 12 on the positioning ring 11 are removed, and the auxiliary installation tools are removed.

[0049] Example 2, based on the above examples, makes the following improvements, such as... Figure 1 As shown, the plug 3 has bevels on both the top outer side and the bottom inner side. The addition of the bevels facilitates the assembly of the socket.

[0050] Example 3, based on the above examples, makes the following improvements, such as... Figure 1 As shown, the inner circumferential surface of the plug 3 is provided with a limiting groove 19, and the outer circumferential surface is provided with limiting grooves 20. The depth of the limiting groove 19 gradually decreases from bottom to top, while the depth of the limiting groove 20 gradually increases from top to bottom. The root of the socket 5 is provided with an inwardly recessed connecting ring groove 21. The addition of the limiting groove 19, the limiting groove 20, and the connecting ring groove 21, after the grouting (micro-expansion mortar) has finally set, forms an interlocking structure, which is suitable for improving the structural strength of the socket and ensuring that the sealing ring 6 is always in a compressed state after the auxiliary installation tools are removed.

[0051] Example 4, based on the above examples, makes the following improvements, such as... Figures 2 to 5 As shown, a one-way switch is provided on the positioning ring 11 located on the connecting section of the wire rope 13 without a loop, which is suitable for one-way passage of the wire rope 13 and the threaded sleeve connecting the two connecting sections.

[0052] The one-way switch includes a mounting plate 14 with through holes for bolt mounting. The mounting plate 14 is installed on the side of the positioning ring 11 facing away from the socket area of ​​the reinforced concrete pipe 1. An mounting sleeve 15 is installed on the side of the mounting plate 14 facing away from the positioning ring 11. A rotating pawl 16 is circumferentially mounted inside the mounting sleeve 15, and a spring 17 is positioned between the pawl 16 and the mounting sleeve 15. The spring 17 between the pawl 16 and the mounting sleeve 15 ensures that the wire rope 13 can only move in one direction. That is, the switch is located on the positioning ring 11 inside the installed pipe. Manually pulling the wire rope 13 in one direction within the pipe allows the pipe to move horizontally to complete the socketing process, while simultaneously ensuring the sealing of the sealing ring 6 during grouting.

[0053] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made to the technical solutions and inventive concepts of the present invention should all be covered within the scope of protection of the present invention.

Claims

1. A construction method for preventing leakage of a soft soil foundation socketed reinforced concrete pipe, comprising a reinforced concrete pipe (1), the construction method comprising the following steps: Step one: pipe production A reinforced concrete pipe (1) is prefabricated in a factory according to design drawings, one end of the reinforced concrete pipe (1) is provided with a socket (2) and a spigot (3), the other end is provided with a spigot (4) matched with the socket (2) and a socket (5) matched with the spigot (3), a sealing ring (6) is arranged on the reinforced concrete pipe (1) outside the spigot (3) and inside the spigot (4), an exhaust port (7) is arranged at the top of the reinforced concrete pipe (1) and a grouting hole (8) is arranged at the bottom of the reinforced concrete pipe (1), a threaded sleeve (9) is arranged on the outside and inside of the reinforced concrete pipe (1), the threaded sleeve (9) on the outside is suitable for installing a lifting ring (10), and the threaded sleeve (9) on the inside is suitable for installing an auxiliary installation tool; Step two: auxiliary installation tool production The auxiliary installation tool comprises a positioning ring (11) with a size smaller than the inner diameter of the reinforced concrete pipe, a plurality of mounting seats (12) are slidably arranged on the positioning ring (11), the mounting seats (12) are suitable for being connected and fixed by bolts and threaded sleeves (9), a guide hole (14) is arranged on the positioning ring (11), and a steel wire rope (13) is arranged in the guide hole (14); Step three: pipe hoisting The auxiliary installation tool is installed in the reinforced concrete pipe (1) which has been installed or is to be installed, the steel wire rope (13) is installed in the guide hole (14) of the positioning ring (11) on the auxiliary installation tool to be installed, the steel wire rope (13) is freely hung at the socketed end and is provided with a ring buckle at the other end, the steel wire rope (13) is two sections and the two sections are detachably connected by an inner threaded sleeve and an outer threaded sleeve, the lifting ring (10) is installed in the outer threaded sleeve, and the reinforced concrete pipe (1) is hoisted by a hoisting device; The end of the freely hung steel wire rope (13) is inserted into the guide hole (14) of the auxiliary installation tool in the installed reinforced concrete pipe (1), the auxiliary installation tool is pulled in the reinforced concrete pipe (1) by manual operation, and the hoisting device is used to horizontally move the socketed pipe during the falling process of the to-be-installed reinforced concrete pipe (1), the socket (2) and the spigot (4) are matched, the spigot (3) and the socket (5) are matched, the sealing ring (6) is forced to be in a compressed state, and the to-be-installed reinforced concrete pipe (1) meets the slope requirement of the design drawings; Step four: grouting Grouting is performed through the grouting hole (8) to the gap between the socket (2) and the spigot (4) and the gap between the spigot (3) and the socket (5), and the grouting is stopped when the exhaust port (7) overflows with mortar, the grouting hole (8) is blocked by a blocking iron sheet, the blocking iron sheet is removed after the mortar reaches the final setting period, the mortar is micro-expanding mortar, and the steel wire rope (13) is not loosened during the grouting process and before the final setting period ends; Step five: removing the auxiliary installation tool Two connecting sections of the steel wire rope (13) are separated by the inner threaded sleeve and the outer threaded sleeve, the connecting section without the ring buckle is pulled out, the bolts of the mounting seat (12) on the positioning ring (11) are removed, and the auxiliary mounting tool is removed; The outer top and inner bottom of the plug one (3) are provided with bevel grooves; The inner circumferential surface of the plug one (3) is provided with a limiting groove one (19), and the outer circumferential surface is provided with a limiting groove two (20), the depth of the limiting groove one (19) gradually decreases from bottom to top, and the depth of the limiting groove two (20) gradually increases from top to bottom; The root of the socket two (5) is provided with an inwardly recessed connection ring groove (21).

2. The construction method for preventing leakage of a reinforced concrete pipe in a soft ground foundation according to claim 1, characterized in that, A one-way switch is arranged on the positioning ring (11) suitable for inserting the connecting section of the steel wire rope (13) without setting a ring buckle, and the one-way switch is suitable for passing through the steel wire rope (13) and the threaded sleeve connecting two connecting sections in one direction.

3. The construction method for anti-leakage of a cast-in-place reinforced concrete pipe in a soft soil foundation according to claim 2, characterized in that, The one-way switch comprises a mounting plate (18), the mounting plate (18) is provided with a through hole suitable for being fixed by bolts, the mounting plate (18) is installed on the side of the positioning ring (11) away from the socket area of the reinforced concrete pipeline (1), the side of the mounting plate (18) away from the positioning ring (11) is provided with a mounting sleeve (15), the inside of the mounting sleeve (15) is circumferentially provided with a rotating pawl (16), and the pawl (16) and the mounting sleeve (15) are provided with a spring (17) therebetween.

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