CN111074999A - In-situ protection structure crossing foundation pit sewage pipe and construction method thereof - Google Patents
In-situ protection structure crossing foundation pit sewage pipe and construction method thereof Download PDFInfo
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- CN111074999A CN111074999A CN201911407593.2A CN201911407593A CN111074999A CN 111074999 A CN111074999 A CN 111074999A CN 201911407593 A CN201911407593 A CN 201911407593A CN 111074999 A CN111074999 A CN 111074999A
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- sewage pipe
- foundation pit
- protection structure
- pipe
- concrete reinforcing
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- 239000010865 sewage Substances 0.000 title claims abstract description 131
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 22
- 238000010276 construction Methods 0.000 title claims abstract description 18
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 32
- 239000010959 steel Substances 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 5
- 239000004588 polyurethane sealant Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 238000009412 basement excavation Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
-
- 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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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Sewage (AREA)
Abstract
The invention provides an in-situ protection structure for a sewage pipe crossing a foundation pit and a construction method thereof, wherein the in-situ protection structure comprises crown beams arranged at two sides of the foundation pit and a sewage pipe crossing the foundation pit and suspended below the crown beams, a plurality of first enclosure piles for supporting the crown beams are arranged at the bottom of the crown beams along the axis direction of the crown beams, an inverted well wall retaining wall is arranged right above the sewage pipe, the top of the inverted well wall retaining wall extends to the bottom of the crown beams, the bottom of the inverted well wall retaining wall extends to the bottom elevation of the sewage pipe, concrete reinforcing beams are poured around the sewage pipe, and second enclosure piles for supporting the concrete reinforcing beams are arranged at two sides of the bottom of the sewage pipe. According to the invention, the concrete reinforcing beam is applied in the range of the sewage pipe for wrapping, when earthwork at the bottom of the sewage pipe is excavated, the transverse channel steel is arranged at equal intervals at the bottom, and the end part of the transverse channel steel is connected with the concrete reinforcing beam, so that the stress of the sewage pipe is enhanced, the construction is simple and convenient, the structure safety is ensured, the construction period is reduced, and the sewage pipe has certain social and economic benefits and better application prospects.
Description
Technical Field
The invention belongs to the technical field of foundation pit construction, and particularly relates to an in-situ protection structure for a sewage pipe crossing a foundation pit and a construction method thereof, which are suitable for the engineering fields of rail transit engineering, municipal underground space engineering, reconstruction and extension and the like.
Background
Along with the development of urban construction, the quantity of urban underground space development is also sharply increased, for a central urban area, the underground pipeline moving and changing or in-situ protection requirements are inevitably met during the excavation of an underground space foundation pit, particularly for a municipal main pipe or a large-diameter sewage pipe, the temporary cutoff condition does not exist, the moving and changing difficulty is high, and only in-situ protection can be adopted. And because the sewage pipe adopts the type of concrete pipe joint more among them, its normal position protection has the condition that the degree of difficulty is big, the risk is high. And dislocation of pipe joints, improper in-situ protection measures, improper treatment of water stopping measures at pipe joint interfaces and the like during foundation pit excavation easily cause great influence on the foundation pit, even an event that sewage flows back into the foundation pit also happens occasionally, serious potential safety hazards are caused to the foundation pit, and great social influence is generated.
Disclosure of Invention
The invention aims to solve the problems that the foundation pit is greatly influenced by dislocation of pipe joints, improper in-situ protection measures, improper treatment of water stopping measures at pipe joint interfaces and the like during the excavation of the conventional foundation pit.
The invention provides a sewage pipe in-situ protection structure crossing a foundation pit, which comprises crown beams arranged at two sides of the foundation pit and a sewage pipe crossing the foundation pit and suspended below the crown beams, wherein a plurality of first guard piles for supporting the crown beams are arranged at the bottom of the crown beams along the axis direction of the crown beams, an inverted well wall retaining wall is arranged right above the sewage pipe, the top of the inverted well wall retaining wall extends to the bottom of the crown beams, the bottom of the inverted well wall retaining wall extends to the bottom elevation of the sewage pipe, concrete reinforcing beams are poured around the sewage pipe, and second guard piles for supporting the concrete reinforcing beams are arranged at two sides of the bottom of the sewage pipe.
Furthermore, a plurality of transverse channel steel are arranged at the bottom of the sewage pipe at equal intervals along the axial direction of the sewage pipe, and the end parts of the transverse channel steel are welded with the steel bars at the inner lower part of the concrete reinforcing beam.
Furthermore, the sewage pipe is formed by welding a plurality of sewage pipe joints, and a sealing water-stopping piece and a metal hoop are arranged at the joint of each sewage pipe joint.
Further, the sealing water-stopping piece is made of polyurethane sealant and a water-stopping strip.
Furthermore, the bottom of each sewage pipe joint is provided with a transverse channel steel.
Further, a steel casing is sleeved on the outer side of the second fender pile.
Furthermore, two ends of the concrete reinforcing beam extend towards the outer side of the crown beam, and the extending distance is not less than 500 mm.
In addition, the invention also provides a construction method of the in-situ protection structure for the sewage pipe crossing the foundation pit, which comprises the following steps:
1) constructing a first fender post and a second fender post at two ends of a sewage pipe crossing the foundation pit along the direction vertical to the axis of the sewage pipe, wherein the first fender posts are arranged at two sides far away from the sewage pipe, a crown beam is constructed at the top of each first fender post, the second fender posts are arranged at two sides close to the sewage pipe, and the top of each second fender post is flush with the elevation of the bottom of the sewage pipe;
2) applying an inverted well wall retaining wall right above the sewage pipe, and excavating earthwork to the top of a second fender post at the level of the bottom of the sewage pipe;
3) binding reinforcing steel bars of a concrete reinforcing beam around the sewage pipe, pouring concrete, and finishing the construction of the concrete reinforcing beam, wherein the bottom of the concrete reinforcing beam is level with the elevation of the bottom of the sewage pipe;
4) and a plurality of transverse channel steel are arranged at the bottom of the sewage pipe at equal intervals along the axis direction of the sewage pipe, and the end part of the transverse channel steel is welded with the lower reinforcing steel bar of the concrete reinforcing beam.
Furthermore, when the sewage pipe is composed of a plurality of sewage pipe joints, a sealing water stop piece and a metal hoop are sequentially applied to each sewage pipe joint interface, and a transverse channel steel is arranged at the bottom of each sewage pipe joint interface.
Compared with the prior art, the invention has the beneficial effects that:
the in-situ protection structure for the sewage pipe crossing the foundation pit adopts a reasonable pipeline protection structural form, the concrete reinforcing beam is constructed in the range of the sewage pipe to wrap the sewage pipe, when earthwork at the bottom of the sewage pipe is excavated, the transverse channel steel is arranged at equal intervals at the bottom, the end part of the transverse channel steel is connected with the concrete reinforcing beam, the stress of the sewage pipe is reinforced, the stress is clear, and reinforcing and water stopping measures are adopted in the range of the sewage pipe section to prevent sewage from flowing back into the foundation pit.
The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of the in-situ protection structure for a sewage pipe crossing a foundation pit according to the present invention;
FIG. 2 is a schematic sectional view taken along line a-a in FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along line b-b in FIG. 1;
FIG. 4 is a schematic view of a sealing structure at the joint of a sewage pipe joint according to the present invention;
fig. 5 is a schematic cross-sectional view of c-c in fig. 4.
Description of reference numerals: 1. a crown beam; 2. a first fender post; 3. hanging the well wall retaining wall upside down; 4. a second fender post; 5. a concrete reinforcing beam; 6. a sewage pipe; 7. transverse channel steel; 8. a steel casing; 9. a sewage pipe joint interface; 10. a ferrule; 11. and sealing the water stopping piece.
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.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1, fig. 2 and fig. 3, this embodiment provides a span foundation ditch sewage pipe normal position protection architecture, including setting up the guan liang 1 in the foundation ditch both sides to and span the foundation ditch and suspend in midair in guanliang 1 below sewage pipe 6, 1 bottom of guanliang is equipped with a plurality of first fender posts 2 that are used for supporting guanliang 1 along its axis direction, be equipped with the wall of a well barricade 3 of hanging upside down directly over sewage pipe 6, and the top of the wall of a well barricade 3 of hanging upside down extends to 1 bottom of guanliang, and its bottom extends to the height of the bottom of sewage pipe 6, concrete stiffening beam 5 has been pour around sewage pipe 6, and 6 bottom both sides of sewage pipe are equipped with second fender post 4 that are used for supporting concrete stiffening beam 5. In this embodiment, adopt reasonable pipeline protection structural style, through executing at sewage pipe 6 within range and making concrete stiffening beam 5 and wrap up, not only better cut apart sewage pipe 6 and foundation ditch, reduced influence each other between the two, increased sewage pipe 6's atress moreover, improved the protection to sewage pipe 6, through the setting of hanging wall of a well barricade 3 upside down, first fender pile 2 and second fender pile 4 simultaneously, further strengthened this sewage pipe protection structure's atress, guaranteed structural safety.
In a detailed embodiment, the bottom of the sewage pipe 6 is provided with a plurality of transverse channel steels 7 at equal intervals along the axial direction, and the end parts of the transverse channel steels 7 are welded with the reinforcing steel bars at the inner lower part of the concrete reinforcing beam 5, so that the protection of the sewage pipe 6 during the earthwork excavation at the bottom of the sewage pipe 6 is enhanced, and the stress on the protection of the sewage pipe 6 is further increased. Further, a steel casing 8 is sleeved outside the second fender post 4, so that the construction of the second fender post 4 is facilitated, and meanwhile, the supporting strength of the second fender post 4 on the sewage pipe 6 can be enhanced. And two ends of the concrete reinforcing beam 5 extend to the outer side of the crown beam 1, and the extending distance is not less than 500mm, so that the sewage pipe 6 and the foundation pit are completely divided, and the influence of the sewage pipe 6 on the foundation pit is reduced.
In the embodiment, as shown in fig. 4 and 5, a sealing water-stopping piece 11 and a metal hoop 10 are arranged at each sewage pipe joint 9, and the sewage pipe joint 9 is sealed by the sealing water-stopping piece 11 and the metal hoop 10, so that the sewage pipe 6 is prevented from leaking water; specifically, the sealing water stop member 11 is a polyurethane sealant and a water stop strip. In order to enhance the strength of the sewage pipe joint 9, the bottom of the sewage pipe joint 9 is provided with a transverse channel steel 7, so that the problem of weak stress strength of the sewage pipe joint 9 is effectively solved.
The construction method of the in-situ protection structure crossing the foundation pit and the sewage pipe comprises the following specific steps:
(1) constructing a first fender post 2 and a second fender post 4 at two ends of a sewage pipe 6 crossing a foundation pit along the direction vertical to the axis of the sewage pipe 6, wherein the first fender post 2 is arranged at two sides far away from the sewage pipe 6, a crown beam 1 is constructed at the top of the first fender post 2, the second fender post 4 is arranged at two sides near the sewage pipe 6, and the top of the second fender post 4 is level with the elevation of the bottom of the sewage pipe 6; and the steel casing 8 can be adopted for auxiliary construction when the second fender post 4 is constructed.
(2) And applying the inverted well wall retaining wall 3 right above the sewage pipe 6, excavating the earthwork to the top of a second fender post 4 at the elevation position at the bottom of the sewage pipe 6, and partially supporting the inverted well wall retaining wall 3 by the second fender post 4.
In this case, when the sewage pipe 6 is composed of a plurality of sewage pipe joints, the sewage pipe joint 9 is sequentially provided with the sealing water-stopping member 11 and the ferrule 10, and the sewage pipe joint 9 is provided with a water-stopping protection measure, and the foundation under the sewage pipe 6 is prevented from being damaged as much as possible during construction.
(3) Binding reinforcing steel bars of the concrete reinforcing beam 5 around the sewage pipe, pouring concrete, completing construction of the concrete reinforcing beam 5, enabling the bottom of the concrete reinforcing beam 5 to be level with the elevation of the bottom of the sewage pipe 6, and enabling the second fender post 4 to partially support the bottom of the concrete reinforcing beam 5; the construction range of the concrete reinforcing beam 5 is not less than 500mm and extends to the outer side of the crown beam 1.
(4) And a plurality of transverse channel steel 7 are arranged at the bottom of the sewage pipe 6 at equal intervals along the axis direction of the sewage pipe 6, and the end part of the transverse channel steel 7 is welded with the lower reinforcing steel bar of the concrete reinforcing beam 5.
When the sewage pipe 6 is composed of a plurality of sewage pipe joints, the bottom of each sewage pipe joint interface 9 is required to be provided with a transverse channel steel 7 so as to ensure the stress strength of the sewage pipe joint interface 9.
In conclusion, the in-situ protection structure for the sewage pipe crossing the foundation pit adopts a reasonable pipeline protection structural form, the concrete reinforcing beam is constructed in the range of the sewage pipe to wrap the sewage pipe, when earthwork at the bottom of the sewage pipe is excavated, the transverse channel steel is arranged at equal intervals at the bottom, and the end part of the transverse channel steel is connected with the concrete reinforcing beam, so that the stress of the sewage pipe is enhanced, the stress is clear, and reinforcing and water stopping measures are adopted in the range of the sewage pipe section to prevent sewage from flowing back into the foundation pit.
The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the invention, which is intended to be covered by the claims and any design similar or equivalent to the scope of the invention.
Claims (9)
1. The utility model provides a span foundation ditch sewage pipe normal position protection architecture which characterized in that: including setting up the guan liang in the foundation ditch both sides to and span the foundation ditch and suspend in midair the sewage pipe in guanliang below, guanliang bottom is equipped with a plurality of first fender piles that are used for supporting guanliang along its axis direction, be equipped with the wall of a well barricade of hanging upside down directly over the sewage pipe, and the top of the wall of a well barricade of hanging upside down extends to guanliang bottom, and its bottom extends to the base elevation height of sewage pipe, concrete stiffening beam has been pour around the sewage pipe, and sewage pipe bottom both sides are equipped with the second fender pile that is used for supporting the concrete stiffening beam.
2. The in-situ protection structure for the sewer pipe crossing the foundation pit as claimed in claim 1, wherein: and a plurality of transverse channel steel is arranged at the bottom of the sewage pipe at equal intervals along the axial direction of the sewage pipe, and the end part of the transverse channel steel is welded with the steel bar at the lower part in the concrete reinforcing beam.
3. The in-situ protection structure for the sewer pipe crossing the foundation pit as claimed in claim 1, wherein: the sewage pipe is formed by welding a plurality of sewage pipe joints, and a sealing water-stopping piece and a metal hoop are arranged at the joint of each sewage pipe joint.
4. The in-situ protection structure for the sewer pipe crossing the foundation pit as claimed in claim 3, wherein: the sealing water-stopping piece is made of polyurethane sealant and a water-stopping strip.
5. The in-situ protection structure for the sewer pipe crossing the foundation pit as claimed in claim 3, wherein: and the bottom of each sewage pipe joint connector is provided with a transverse channel steel.
6. The in-situ protection structure for the sewer pipe crossing the foundation pit as claimed in claim 1, wherein: and a steel casing is sleeved outside the second fender pile.
7. The in-situ protection structure for the sewer pipe crossing the foundation pit as claimed in claim 1, wherein: and two ends of the concrete reinforcing beam extend to the outer side of the crown beam, and the extending distance is not less than 500 mm.
8. A construction method of a cross foundation pit sewage pipe in-situ protection structure is characterized by comprising the following steps:
1) constructing a first fender post and a second fender post at two ends of a sewage pipe crossing the foundation pit along the direction vertical to the axis of the sewage pipe, wherein the first fender posts are arranged at two sides far away from the sewage pipe, a crown beam is constructed at the top of each first fender post, the second fender posts are arranged at two sides close to the sewage pipe, and the top of each second fender post is flush with the elevation of the bottom of the sewage pipe;
2) applying an inverted well wall retaining wall right above the sewage pipe, and excavating earthwork to the top of a second fender post at the level of the bottom of the sewage pipe;
3) binding reinforcing steel bars of a concrete reinforcing beam around the sewage pipe, pouring concrete, and finishing the construction of the concrete reinforcing beam, wherein the bottom of the concrete reinforcing beam is level with the elevation of the bottom of the sewage pipe;
4) and a plurality of transverse channel steel are arranged at the bottom of the sewage pipe at equal intervals along the axis direction of the sewage pipe, and the end part of the transverse channel steel is welded with the lower reinforcing steel bar of the concrete reinforcing beam.
9. The method of claim 8, wherein when the sewer pipe comprises a plurality of sewer pipe sections, the sealing water stop and the ferrule are sequentially applied to each sewer pipe section joint, and a transverse channel steel is disposed at the bottom of each sewer pipe section joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911407593.2A CN111074999A (en) | 2019-12-31 | 2019-12-31 | In-situ protection structure crossing foundation pit sewage pipe and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911407593.2A CN111074999A (en) | 2019-12-31 | 2019-12-31 | In-situ protection structure crossing foundation pit sewage pipe and construction method thereof |
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| CN111074999A true CN111074999A (en) | 2020-04-28 |
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| CN201911407593.2A Pending CN111074999A (en) | 2019-12-31 | 2019-12-31 | In-situ protection structure crossing foundation pit sewage pipe and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622230A (en) * | 2020-06-08 | 2020-09-04 | 中铁十四局集团大盾构工程有限公司 | Protection method for pipeline penetrating foundation pit |
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| CN109113092A (en) * | 2018-07-12 | 2019-01-01 | 上海市基础工程集团有限公司 | Construction method is protected in underground large-diameter pipeline original position water flowing |
| CN109296825A (en) * | 2018-09-29 | 2019-02-01 | 中铁第勘察设计院集团有限公司 | Major diameter bell and spigot water supply concrete pipe suspension protection system and its construction method |
| CN208949892U (en) * | 2018-09-04 | 2019-06-07 | 中铁一院集团山东建筑设计院有限公司 | A kind of building enclosure adapted to across foundation pit pipeline |
| CN109914480A (en) * | 2019-04-15 | 2019-06-21 | 贵州理工学院 | A kind of structural system for solving underground structure and conflicting with municipal pipeline |
| CN211735673U (en) * | 2019-12-31 | 2020-10-23 | 中铁第四勘察设计院集团有限公司 | Span foundation ditch sewage pipe normal position protection architecture |
-
2019
- 2019-12-31 CN CN201911407593.2A patent/CN111074999A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877539A (en) * | 2012-09-26 | 2013-01-16 | 中国建筑第二工程局有限公司 | Suspended section-steel sewage pipe diversion structure and construction method thereof |
| CN105672251A (en) * | 2016-02-01 | 2016-06-15 | 中铁十六局集团北京轨道交通工程建设有限公司 | Construction method of underground diaphragm wall trench section for bestriding conventional sewage pipe |
| CN109113092A (en) * | 2018-07-12 | 2019-01-01 | 上海市基础工程集团有限公司 | Construction method is protected in underground large-diameter pipeline original position water flowing |
| CN208949892U (en) * | 2018-09-04 | 2019-06-07 | 中铁一院集团山东建筑设计院有限公司 | A kind of building enclosure adapted to across foundation pit pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111622230A (en) * | 2020-06-08 | 2020-09-04 | 中铁十四局集团大盾构工程有限公司 | Protection method for pipeline penetrating foundation pit |
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