CN112376670A - Flexible connection structure between reinforced concrete pipes and construction method - Google Patents
Flexible connection structure between reinforced concrete pipes and construction method Download PDFInfo
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- CN112376670A CN112376670A CN202011136224.7A CN202011136224A CN112376670A CN 112376670 A CN112376670 A CN 112376670A CN 202011136224 A CN202011136224 A CN 202011136224A CN 112376670 A CN112376670 A CN 112376670A
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- reinforced concrete
- post
- pipeline
- steel plate
- joint
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/10—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations
- F16L27/113—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a rigid sleeve
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sewage (AREA)
Abstract
The invention discloses a flexible connection structure between reinforced concrete pipes and a construction method, wherein the flexible connection structure comprises reinforced concrete pipes at two ends, the reinforced concrete pipes at the two ends are butted, and a connecting seam is arranged at the joint of the reinforced concrete pipes at the two ends; the reinforced concrete pipeline is also fixedly provided with an annular post-pouring belt, the annular post-pouring belt is distributed on two sides of the connecting joint, the inner side of the reinforced concrete pipe is provided with a W-shaped galvanized steel plate, and the W-shaped galvanized steel plate is arranged at the connecting joint and fixed on the inner wall of the reinforced concrete pipe by adopting expansion bolts. According to the invention, the flexible filler polyurethane sealant 4 is poured between the W-shaped galvanized steel plate and the post-cast strip, so that the received displacement deformation can be buffered when uneven settlement occurs, the connection between reinforced concrete pipes is ensured, and the leakage caused by the damage between the concrete pipes is prevented.
Description
Technical Field
The invention relates to the technical field of municipal water supply and drainage pipeline construction, in particular to a flexible connection structure between reinforced concrete pipes and a construction method.
Background
In the work progress of municipal administration water supply and drainage pipe network, because geological conditions are comparatively complicated changeable, receive the influence of multifactor easily and appear subsiding the problem in the aspect of etc. At present municipal administration water supply and drainage pipe net material adopts reinforced concrete pipe mostly, adopts socket joint formula to lay reinforced concrete pipe in pipeline construction process, and its connected mode is rigid connection. The connection mode can not resist deformation caused by uneven settlement of the foundation, and the situations of breakage and disjointing of the pipeline connection part, pipeline slope falling, suspended channel, cracking, shearing and the like occur under the action of self weight or external load.
After the water supply and drainage pipeline is broken, a seepage field can be formed around the pipeline, and the seepage field can cause the change of the mechanical property of the soil body under the coupling action with the surrounding soil body to form an underground water sac for mixing soil and water. Once influenced by ground or underground construction, the ground collapse accident is easy to happen, which not only influences the life of surrounding residents, but also can lead to casualties in severe cases.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a flexible connecting structure formed by combining a reinforced concrete post-cast strip, a rubber water stop strip and a W-shaped galvanized steel plate, which can effectively reduce deformation damage caused by uneven settlement of a foundation and prevent leakage of a reinforced concrete pipeline.
In order to achieve the purpose, the invention provides the following technical scheme that the flexible connection structure between the reinforced concrete pipes comprises reinforced concrete pipes at two ends, wherein the reinforced concrete pipes at the two ends are butted, and a connecting seam is arranged at the joint of the reinforced concrete pipes at the two ends; the reinforced concrete pipeline is also fixedly provided with an annular post-pouring belt, the annular post-pouring belt is distributed on two sides of the connecting joint, the inner side of the reinforced concrete pipe is provided with a W-shaped galvanized steel plate, and the W-shaped galvanized steel plate is arranged at the connecting joint and fixed on the inner wall of the reinforced concrete pipe by adopting expansion bolts.
Further, flexible filler polyurethane sealant is poured between the W-shaped galvanized steel plate and the post-cast strip.
Furthermore, a rubber water stop is arranged at the joint and is arranged in the middle of the annular post-pouring strip, and two ends of the rubber water stop are embedded into the annular post-pouring strip respectively.
The invention also provides a construction method of the flexible connection structure between the reinforced concrete pipes, which is characterized by comprising the following steps:
s1, reserving a post-cast strip placement point at the bottom of a foundation pit before laying the reinforced concrete pipeline, avoiding the pipeline from being suspended or extruding the bottom post-cast strip, facilitating the installation of horizontally laying the pipeline and the post-cast strip and preventing the pipeline from falling down.
S2, after the reinforced concrete pipelines are installed in a butt joint mode, erecting a formwork at the joint, binding reinforcing steel bars, fixing a rubber waterstop, pouring concrete, and reserving a connecting seam in the middle of the rubber waterstop to form a reinforced concrete post-pouring belt;
s3, after the post-cast strip is poured, demolding and maintaining are conducted when the strength requirement is met, polyurethane sealant is poured into the connecting joint, and the post-cast strip on two sides is convenient to displace and deform;
s4, installing expansion bolts at the inner sides of two ends of the reinforced concrete pipe connector, wherein the length of the selected expansion bolts is smaller than the wall thickness of the reinforced concrete pipe, and fixing the W-shaped galvanized steel plate on the inner side of the pipeline; the W-shaped galvanized steel plate is arranged on the inner side of the reinforced concrete pipeline, so that received displacement deformation can be buffered through deformation when uneven settlement occurs; a connecting seam is reserved in the middle of the post-cast strip, and a rubber water stop strip is connected into the connecting seam, so that the inserted rubber water stop strip can play a good water stopping role;
and S5, brushing antirust paint on the galvanized steel plate arranged on the inner side of the pipeline to prevent the steel plate from rusting and corroding, and simultaneously pouring polyurethane sealant into the contact part of the inner wall of the pipeline and the steel plate to fill the gap between the inner wall of the pipeline and the steel plate with flexible filler to prevent the inner side of the pipeline from leaking.
Compared with the prior art, the invention at least comprises the following beneficial effects:
1. according to the invention, the flexible filler polyurethane sealant is poured between the W-shaped galvanized steel plate and the post-cast strip, so that the received displacement deformation can be buffered when uneven settlement occurs, the connection between reinforced concrete pipes is ensured, and the leakage caused by the damage between the concrete pipes is prevented.
2. The rubber water stop belt is connected into the connecting seam reserved in the middle of the post-cast strip, so that the concrete pipes are connected more tightly, the problem that the pipeline joint is easy to leak is solved, and a good water stop effect is achieved.
3. The W-shaped galvanized steel plate arranged on the inner side of the pipeline is coated with the antirust paint, so that the corrosion resistance of the joint is enhanced on the basis of corrosion resistance of the galvanized steel plate, and the service life of the pipeline is effectively prolonged.
4. By adopting the construction method, the concrete pipes can be fully connected to prevent water leakage, the breakage and disjunction of the pipeline joint caused by uneven settlement can be prevented, and the probability and investment of later-stage leakage repair of the pipeline are reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
in the figure, a 1-W type galvanized steel sheet; 2-expansion bolts; 3-reinforced concrete pipe; 4-polyurethane sealant; 5-rubber waterstops; 6-post-cast strip.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The embodiment of the application provides a flexible connection structure between reinforced concrete pipes, which comprises reinforced concrete pipes 3 at two ends, wherein the reinforced concrete pipes 3 at the two ends are butted, and a connecting seam is arranged at the joint of the reinforced concrete pipes 3 at the two ends; an annular post-pouring belt 6 is fixedly arranged outside the reinforced concrete pipe 3, the annular post-pouring belt 6 is distributed on two sides of the connecting joint, a W-shaped galvanized steel plate 1 is arranged on the inner side of the reinforced concrete pipe 3, and the W-shaped galvanized steel plate 1 is arranged on the connecting joint and fixed on the inner wall of the reinforced concrete pipe 3 through expansion bolts 2.
In the above embodiment, the steel bars are distributed in the post-cast strip 6, the rubber water stop strip 5 is arranged in the connecting joint reserved in the middle of the annular reinforced concrete post-cast strip 6, the polyurethane sealant 4 is poured into the connecting joint after the post-cast strip 6 is poured, and the W-shaped galvanized steel plate 1 is arranged on the inner side of the reinforced concrete pipe 3. The galvanized steel sheet is fixed on the inner wall of the pipeline by adopting an expansion bolt 2 and coated with antirust paint, and meanwhile, polyurethane sealant 4 is poured into the contact part of the galvanized steel sheet and the inner wall of the concrete pipe. This flexible connection structure can effectively reduce because the deformation that the uneven settlement of ground produced destroys, prevents 3 leakage of reinforced concrete pipe way. The rubber waterstop 5 is pre-embedded in the annular reinforced concrete post-cast strip 6 through formwork support, reinforcement and concrete pouring to form a flexible connection structure for resisting longitudinal and transverse displacement deformation. The annular post-cast strip 6 is arranged at the connector of the reinforced concrete pipe 3, and the post-cast strips 6 at the two sides are respectively connected with the reinforced concrete pipes 3 at the two ends of the connector in a pouring manner. And after the construction of the annular post-cast strip 6 is finished, polyurethane sealant 4 is poured into the joint, so that the post-cast strips 6 on the two sides can be displaced and deformed conveniently. Adopt expansion bolts 2 fixed W type galvanized steel sheet 1 in reinforced concrete pipe 3 inboard to adopt the anti-rust paint to brush galvanized steel sheet and expansion bolts 2 with a brush, prevent the rust corrosion, pour into polyurethane sealant 4 in steel sheet and concrete contact joint department simultaneously, prevent the inboard seepage of pipeline.
The specific construction method comprises the following steps:
the method comprises the following steps: the post-cast strip 6 placement point is reserved at the bottom of the foundation pit before laying the reinforced concrete pipe 3, the pipeline is prevented from being suspended or extruding the bottom post-cast strip 6, the pipeline and the post-cast strip 6 are conveniently and horizontally laid, and the pipeline is prevented from falling to the slope.
Step two: after the reinforced concrete pipe 3 is installed in a butt joint mode, a formwork is erected at an interface, reinforcing steel bars are bound, the rubber waterstop 5 is fixed, concrete is poured, a connecting seam is reserved in the middle of the rubber waterstop 5, and a reinforced concrete post-cast strip 6 is formed;
step three: after the post-cast strip 6 is poured, removing the mold and maintaining when the strength requirement is met, and pouring polyurethane sealant 4 into the connecting joint, so that the post-cast strips 6 on the two sides can be displaced and deformed conveniently;
step four: installing expansion bolts 2 at the inner sides of two ends of an interface of the reinforced concrete pipe 3, wherein the length of the selected expansion bolt 2 is smaller than the wall thickness of the reinforced concrete pipe 3, and fixing the W-shaped galvanized steel plate 1 at the inner side of the pipeline;
step five: the galvanized steel plate arranged on the inner side of the pipeline is coated with the antirust paint to prevent the steel plate from rusting and corroding, and meanwhile, the polyurethane sealant 4 is poured into the contact part of the inner wall of the pipeline and the steel plate to fill the gap between the inner wall of the pipeline and the steel plate with the flexible filler, so that the inner side of the pipeline is prevented from leaking.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and the technical contents of the present invention are all described in the claims.
Claims (4)
1. The utility model provides a flexible connection structure between reinforced concrete pipe which characterized in that: the reinforced concrete pipe joint comprises reinforced concrete pipes at two ends, wherein the reinforced concrete pipes at the two ends are butted, and a connecting seam is arranged at the joint of the reinforced concrete pipes at the two ends; the reinforced concrete pipeline is also fixedly provided with an annular post-pouring belt, the annular post-pouring belt is distributed on two sides of the connecting joint, the inner side of the reinforced concrete pipe is provided with a W-shaped galvanized steel plate, and the W-shaped galvanized steel plate is arranged at the connecting joint and fixed on the inner wall of the reinforced concrete pipe by adopting expansion bolts.
2. A flexible connection structure between reinforced concrete pipes according to claim 1, wherein: and pouring flexible filler polyurethane sealant between the W-shaped galvanized steel plate and the post-cast strip.
3. A flexible connection structure between reinforced concrete pipes according to claim 1, wherein: the rubber waterstop is arranged at the joint and is arranged in the middle of the annular post-pouring strip, and two ends of the rubber waterstop are embedded into the annular post-pouring strip respectively.
4. A method of constructing a flexible joint structure between reinforced concrete pipes according to any one of claims 1 to 3, comprising the steps of:
s1, reserving a post-cast strip placement point at the bottom of a foundation pit before laying a reinforced concrete pipeline, avoiding the pipeline from being suspended or extruding the bottom post-cast strip, facilitating the installation of a horizontally laid pipeline and the post-cast strip and preventing the pipeline from falling down on a slope;
s2, after the reinforced concrete pipelines are installed in a butt joint mode, erecting a formwork at the joint, binding reinforcing steel bars, fixing a rubber waterstop, pouring concrete, and reserving a connecting seam in the middle of the rubber waterstop to form a reinforced concrete post-pouring belt;
s3, after the post-cast strip is poured, demolding and maintaining are conducted when the strength requirement is met, polyurethane sealant is poured into the connecting joint, and the post-cast strip on two sides is convenient to displace and deform;
s4, installing expansion bolts at the inner sides of two ends of the reinforced concrete pipe connector, wherein the length of the selected expansion bolts is smaller than the wall thickness of the reinforced concrete pipe, and fixing the W-shaped galvanized steel plate on the inner side of the pipeline; the W-shaped galvanized steel plate is arranged on the inner side of the reinforced concrete pipeline, so that received displacement deformation can be buffered through deformation when uneven settlement occurs; a connecting seam is reserved in the middle of the post-cast strip, and a rubber water stop strip is connected into the connecting seam, so that the inserted rubber water stop strip can play a good water stopping role;
and S5, brushing antirust paint on the galvanized steel plate arranged on the inner side of the pipeline to prevent the steel plate from rusting and corroding, and simultaneously pouring polyurethane sealant into the contact part of the inner wall of the pipeline and the steel plate to fill the gap between the inner wall of the pipeline and the steel plate with flexible filler to prevent the inner side of the pipeline from leaking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011136224.7A CN112376670A (en) | 2020-10-22 | 2020-10-22 | Flexible connection structure between reinforced concrete pipes and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011136224.7A CN112376670A (en) | 2020-10-22 | 2020-10-22 | Flexible connection structure between reinforced concrete pipes and construction method |
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| Publication Number | Publication Date |
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| CN112376670A true CN112376670A (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011136224.7A Pending CN112376670A (en) | 2020-10-22 | 2020-10-22 | Flexible connection structure between reinforced concrete pipes and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114059459A (en) * | 2021-11-26 | 2022-02-18 | 华蓝设计（集团）有限公司 | Connecting method for waterproof settlement joints at joints of new box culvert and old box culvert |
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| CN111236390A (en) * | 2020-01-19 | 2020-06-05 | 中建四局安装工程有限公司 | Push pipe trenchless construction method |
| CN111255044A (en) * | 2020-01-13 | 2020-06-09 | 中国一冶集团有限公司 | Flat-opening type rainwater pipe flexible connection structure and connection method |
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| JP2011184925A (en) * | 2010-03-08 | 2011-09-22 | Seibu Polymer Corp | Water-stop joint structure of placing-joint surface and connecting joint part |
| CN203907010U (en) * | 2014-06-05 | 2014-10-29 | 中铁上海工程局集团有限公司 | Flexible connection device for pipe jacking construction in soft soil layer |
| CN204401757U (en) * | 2015-01-04 | 2015-06-17 | 上海市城市建设设计研究总院 | Reinforced concrete pipiline and structure flexible connecting structure |
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Cited By (1)
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| CN114059459A (en) * | 2021-11-26 | 2022-02-18 | 华蓝设计（集团）有限公司 | Connecting method for waterproof settlement joints at joints of new box culvert and old box culvert |
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Application publication date: 20210219 |