CN110700650A - Construction method of pouring type buried transformer substation - Google Patents
Construction method of pouring type buried transformer substation Download PDFInfo
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- CN110700650A CN110700650A CN201910845294.0A CN201910845294A CN110700650A CN 110700650 A CN110700650 A CN 110700650A CN 201910845294 A CN201910845294 A CN 201910845294A CN 110700650 A CN110700650 A CN 110700650A
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- box
- transformer substation
- box body
- supporting
- construction method
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
- E04H5/04—Transformer houses; Substations or switchgear houses
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Housings And Mounting Of Transformers (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a construction method of a poured buried transformer substation, which mainly comprises the following construction steps of digging a foundation pit according to the volume of a supporting box body, filling dense fine materials into the supporting box body, drawing out an outer vertical plate after the supporting box body is filled, pressing cement concrete into the dense fine materials after a pressurizing machine is hermetically connected with a filling port, and tamping the cement concrete by adopting a tamping machine along the periphery outside the box transformer body after the cement concrete is fully fused with the dense fine materials and soil around the box transformer body. Has the advantages that: the construction method is suitable for construction environments with soft and easily-collapsed geological conditions such as soft soil, wet soil and the like, and the cement concrete is pressurized and poured, so that the supporting force of the soil body around the box body is greatly improved, and the safe operation of the transformer substation is ensured.
Description
Technical Field
The invention relates to the field of buried substations, in particular to a construction method of a perfusion type buried substation.
Background
At present, box structures of buried substations are constructed by adopting an integral structure, a foundation pit needs to be dug during construction, and the box can be lifted into the foundation pit only after the side wall of the foundation pit and ground are subjected to spray anchor support.
Disclosure of Invention
The invention aims to solve the problems and provide a construction method of a perfusion type buried transformer substation so as to solve the technical problems that the buried transformer substation in the prior art is low in construction efficiency and not suitable for poor geological conditions.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a construction method of a pouring type buried transformer substation, which is characterized by comprising the following steps: the buried transformer substation is of a box-type transformer substation structure and comprises a box-type transformer substation body with an inverted trapezoid cross section and supporting boxes symmetrically arranged on two sides of the box-type transformer substation body, wherein the box-type transformer substation body and the supporting boxes jointly form a cuboid box structure, the box-type transformer substation body and a top plate and a bottom plate of each supporting box are arranged in a shared integrated mode, an outer side vertical plate of each supporting box is connected with the top plate and the top plate to form a detachable structure, the upper end of the outer side vertical plate is higher than the top plate, a plurality of hoisting holes are formed in the outer side vertical plate higher than the top plate, and a plurality of; the construction steps are as follows:
1) excavating a foundation pit according to the size of the rectangular box body;
2) hoisting the rectangular box body by using hoisting equipment, and burying the rectangular box body in the foundation pit;
3) guiding the dense fine materials into the supporting box body through the filling opening and filling the supporting box body with the dense fine materials;
4) opening the detachable structure of the outer vertical plate and the top plate, and hoisting and extracting the outer vertical plate through hoisting equipment;
5) the pressurizing machine is connected with the filling opening in a sealing way, and cement concrete is pressed into the dense fine materials;
6) after the cement concrete is poured, maintaining the pressure for 20 minutes to ensure that the cement concrete is fully fused;
7) and (4) propelling and compacting around the box transformer body from near to far by using a compactor.
Further, after the step 6) is finished, sealing the filling opening by using a cover plate.
Furthermore, the outer side vertical plate of the supporting box body is in lap joint with the top plate through a folded edge, and the lap joint part is detachably connected with the through hole through the matching of a bolt and the through hole.
Furthermore, the bottom plate of the supporting box body is provided with water seepage holes, and the dense fine materials in the step 3) are gravels with the particle size of less than 6 mm.
Furthermore, two side plates of the box transformer substation body, namely the side edges of the inverted trapezoid, are made of aluminum-zinc-coated steel plates.
Has the advantages that:
1) the supporting box body plays a role in supporting and protecting the box transformer substation body in the initial construction stage;
2) the top plate and the bottom plate of the supporting box body are integrally arranged with the box transformer substation body, and after the filling is finished, the top plate and the bottom plate strengthen the support of the box transformer substation body and an underground soil body;
3) the section of the box transformer substation body is in an inverted trapezoid shape, and the two side edges of the inverted trapezoid shape improve the side edge supporting force of the box transformer substation body;
4) the outer side vertical plate of the supporting box body is detachably connected to better realize the filling and embedding of the periphery of the box transformer substation body, and the protruding structure at the upper part of the supporting box body is provided with a hoisting hole to meet the double requirements of integral hoisting of the box body and extraction of the outer side vertical plate;
5) the cement concrete is pressurized and poured, so that the supporting force of a soil body around the box body is greatly improved, and the safe operation of the transformer substation is ensured;
6) by adopting the box body structure and the construction method, the construction efficiency of the buried transformer substation is greatly improved, and a constructor can directly lift and bury the box body after digging the foundation pit without supporting the foundation pit.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of construction steps;
fig. 2 is a front view of a buried substation;
FIG. 3 is an enlarged view of the connection of the outer riser to the top plate;
the reference numerals are explained below:
1. a box transformer substation body; 2. supporting the box body; 3. an outer vertical plate; 4. a filling opening; 5. a top plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
A pouring type buried transformer substation construction method is characterized in that the buried transformer substation is of a box-type transformer substation structure and comprises a box-type transformer substation body 1 with an inverted trapezoidal cross section and supporting box bodies 2 symmetrically arranged on two sides of the box-type transformer substation body 1, the box-type transformer substation body 1 and the supporting box bodies 2 jointly form a cuboid box body structure, the box-type transformer substation body 1 and a top plate and a bottom plate of the supporting box bodies 2 are arranged in a shared and integrated mode, an outer side vertical plate 3 of the supporting box bodies 2 is connected with the top plate and the top plate 5 to form a detachable structure, the upper end of the outer side vertical plate 3 is higher than the top plate 5, a plurality of hoisting holes are formed in the outer side vertical plate higher than the top plate 5; the construction steps are as follows:
1) excavating a foundation pit according to the size of the rectangular box body;
2) hoisting the rectangular box body by using hoisting equipment, and burying the rectangular box body in the foundation pit;
3) guiding the dense fine materials into the supporting box body through the filling opening and filling the supporting box body with the dense fine materials;
4) opening the detachable structure of the outer vertical plate and the top plate, and hoisting and extracting the outer vertical plate through hoisting equipment;
5) the pressurizing machine is connected with the filling opening in a sealing way, and cement concrete is pressed into the dense fine materials;
6) after the cement concrete is poured, maintaining the pressure for 20 minutes to ensure that the cement concrete is fully fused;
7) and (4) propelling and compacting around the box transformer body from near to far by using a compactor.
After the construction is accomplished, the cement concrete compaction that becomes the body 1 as the filler is in the both sides of case and is located between roof and the bottom plate, such compaction structure, roof and bottom plate have strengthened the support to the case becomes the body, and the cross-section is trapezoidal box structure, and narrow structure can prevent effectively that the box from subsiding about the width, has increased the contact surface of case become body side and soil body, further increases support stability.
And 5) after the step 5) is finished, sealing the filling opening by using a cover plate, and preventing surface water from permeating through the filling opening to cause unstable sedimentation of the filler.
The outer side vertical plate 2 of the supporting box body 1 is in folded joint with the top plate 5, and the folded joint is detachably connected with the through hole through the matching of a bolt and the through hole.
The bottom plate of the supporting box body is provided with water seepage holes, the dense fine materials in the step 3) are gravels with the particle size smaller than 6mm, the fusion of cement concrete, the gravels and surrounding soil bodies can be better realized, the supporting force of the surrounding soil bodies of the box body is enhanced, and the discharge of a small amount of segregation moisture generated during cement pouring is ensured through the arrangement of the water seepage holes, so that the strength of the cement concrete is ensured.
Two side plates, namely the inverted trapezoidal side edges of the box transformer substation body 1 are made of aluminum-zinc-coated steel plates in a humid environment.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (5)
1. A construction method of a perfusion-type transformer substation is characterized by comprising the following steps: the buried transformer substation is of a box-type transformer substation structure and comprises a box-type transformer substation body (1) with an inverted trapezoidal cross section and supporting boxes (2) symmetrically arranged on two sides of the box-type transformer substation body (1), wherein the box-type transformer substation body (1) and the supporting boxes (2) jointly form a cuboid box structure, the box-type transformer substation body (1) and a top plate and a bottom plate of the supporting boxes (2) are jointly and integrally arranged, an outer side vertical plate (3) of the supporting boxes (2) is connected with the top plate (5) to form a detachable structure, the upper end of the outer side vertical plate (3) is higher than the top plate (5), a plurality of hoisting holes are formed in the outer side vertical plate higher than the top plate (5), and a plurality of filling openings (4) are formed in the top plate (5; the construction steps are as follows:
1) excavating a foundation pit according to the size of the rectangular box body;
2) hoisting the rectangular box body by using hoisting equipment, and burying the rectangular box body in the foundation pit;
3) guiding the dense fine materials into the supporting box body through the filling opening and filling the supporting box body with the dense fine materials;
4) opening the detachable structure of the outer vertical plate and the top plate, and hoisting and extracting the outer vertical plate through hoisting equipment;
5) the pressurizing machine is connected with the filling opening in a sealing way, and cement concrete is pressed into the dense fine materials;
6) after the cement concrete is poured, maintaining the pressure for 20 minutes to ensure that the cement concrete is fully fused;
7) and (4) propelling and compacting around the box transformer body from near to far by using a compactor.
2. The pouring type buried substation construction method according to claim 1, characterized in that: and 6), sealing the filling opening by adopting a cover plate after the step 6) is finished.
3. The pouring type buried substation construction method according to claim 1, characterized in that: the outer side vertical plate (3) of the supporting box body (2) is in folded joint with the top plate, and the folded joint is detachably connected with the through hole in a matched mode through a bolt.
4. The pouring type buried substation construction method according to claim 1, characterized in that: the bottom plate of the supporting box body is provided with water seepage holes, and the dense fine materials in the step 3) are broken stones with the particle size of less than 6 mm.
5. The pouring type buried substation construction method according to claim 1, characterized in that: two side plates, namely the inverted trapezoidal side edges of the box transformer substation body (1) adopt aluminum-zinc-coated steel plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910845294.0A CN110700650B (en) | 2019-09-08 | 2019-09-08 | Construction method of pouring type buried transformer substation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910845294.0A CN110700650B (en) | 2019-09-08 | 2019-09-08 | Construction method of pouring type buried transformer substation |
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| Publication Number | Publication Date |
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| CN110700650A true CN110700650A (en) | 2020-01-17 |
| CN110700650B CN110700650B (en) | 2021-07-13 |
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| CN201910845294.0A Active CN110700650B (en) | 2019-09-08 | 2019-09-08 | Construction method of pouring type buried transformer substation |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5560150A (en) * | 1995-02-15 | 1996-10-01 | Professional Systems, Inc. | Structure for telecommunications equipment enclosure |
| CN2503649Y (en) * | 2001-09-20 | 2002-07-31 | 北京广联惠供用电工程设计有限公司 | Prefabricated underground box type converting station |
| CN1730909A (en) * | 2005-08-04 | 2006-02-08 | 上海隧道工程股份有限公司 | Steel formwork support system for extruded concrete lining method for shielding rectangular tunnel |
| CN103924602A (en) * | 2014-04-30 | 2014-07-16 | 冯诚 | Deep soft soil foundation pit construction method |
-
2019
- 2019-09-08 CN CN201910845294.0A patent/CN110700650B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5560150A (en) * | 1995-02-15 | 1996-10-01 | Professional Systems, Inc. | Structure for telecommunications equipment enclosure |
| CN2503649Y (en) * | 2001-09-20 | 2002-07-31 | 北京广联惠供用电工程设计有限公司 | Prefabricated underground box type converting station |
| CN1730909A (en) * | 2005-08-04 | 2006-02-08 | 上海隧道工程股份有限公司 | Steel formwork support system for extruded concrete lining method for shielding rectangular tunnel |
| CN103924602A (en) * | 2014-04-30 | 2014-07-16 | 冯诚 | Deep soft soil foundation pit construction method |
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| CN110700650B (en) | 2021-07-13 |
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