CN110541428B - Basic structure of transformer substation distribution device building - Google Patents
Basic structure of transformer substation distribution device building Download PDFInfo
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- CN110541428B CN110541428B CN201910768924.9A CN201910768924A CN110541428B CN 110541428 B CN110541428 B CN 110541428B CN 201910768924 A CN201910768924 A CN 201910768924A CN 110541428 B CN110541428 B CN 110541428B
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- 238000009826 distribution Methods 0.000 title claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 133
- 239000010959 steel Substances 0.000 claims abstract description 133
- 239000004567 concrete Substances 0.000 claims abstract description 25
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 14
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 9
- 238000013461 design Methods 0.000 description 6
- 238000012946 outsourcing Methods 0.000 description 6
- 239000011150 reinforced concrete Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007792 addition Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000003108 foot joint Anatomy 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/01—Flat foundations
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The application discloses foundation structure of transformer substation's distribution unit building, foundation structure include with the raft of a plurality of first reinforcing bars and concrete placement to and arrange the pier on the raft, the pier includes: the cross steel frame is laid in the raft in a flat manner and is welded and fixed with the adjacent first steel bars in the raft; the cross fixing seat is welded and fixed in the central area of the top surface of the cross steel frame; the box-shaped column is vertically fixed in the central area of the top surface of the cross steel frame, the bottom edge of the box-shaped column is provided with a clamping groove matched with the cross fixing seat, a concrete filling area is arranged inside the box-shaped column, and a plurality of pegs are welded on the peripheral surface of the box-shaped column; the column foot reinforcing pier comprises a plurality of second steel bars and concrete pouring and wrapping the bottom of the box column, wherein the second steel bars comprise a plurality of longitudinal bars arranged on the periphery of the box column and a plurality of stirrups connected with the longitudinal bars.
Description
Technical Field
The invention relates to the field of buildings, in particular to a foundation structure of a substation distribution device building.
Background
In recent years, with the formation of intensive urban development strategy in China, various industrial and civil buildings have been greatly developed. In order to make full use of the performance of the materials, a steel pipe concrete combined structure system is introduced based on the original reinforced concrete structure system, and the steel pipe concrete utilizes the mutual restriction of the steel pipe and the concrete in the stress process, namely the restriction of the steel pipe on the concrete, so that the concrete is in a three-way stress state, thereby improving the strength of the concrete, reducing the brittleness and greatly improving the plasticity and toughness performance; meanwhile, due to the deformation of the concrete, the steel pipe is in a complex stress state, and the stability of the steel pipe wall is enhanced.
At present, the research of beam column joints of a steel tube concrete upper structure is relatively more, but a column foot form of a steel structure is still used for a foundation column foot joint, and the design of a column foot foundation is not carried out according to the structural characteristics of the steel tube concrete.
More importantly, the national regulation of transformer substation site selection accords with the national related land use policy, and the original barren land, sloping field and inferior land are utilized as much as possible. "this places higher demands on the infrastructure of the substation due to poor geological conditions.
The inventor finds that the raft foundation has good field applicability, can fully utilize the bearing capacity of field soil, and is very suitable for foundations with poor geological conditions. The foundation form of the column pier and the raft is flexible and applicable to various structural forms due to arrangement. The substation distribution device building generally adopts a frame structure, and due to installation equipment, the load of certain column bases is relatively large, and column base nodes and foundation structures with higher bearing capacity are needed.
Disclosure of Invention
The application discloses foundation structure of transformer substation's distribution unit building, foundation structure includes the raft with a plurality of first reinforcing bars and concrete placement, and arranges the pier on the raft, the pier includes:
the cross steel frame is laid in the raft in a flat manner and is welded and fixed with the adjacent first steel bars in the raft;
the cross fixing seat is welded and fixed in the central area of the top surface of the cross steel frame;
the box-shaped column is vertically fixed in the central area of the top surface of the cross steel frame, the bottom edge of the box-shaped column is provided with a clamping groove matched with the cross fixing seat, a concrete filling area is arranged in the box-shaped column, and a plurality of pegs are welded on the peripheral surface of the box-shaped column;
the column foot reinforcing pier comprises a plurality of second steel bars and concrete pouring and wrapping the bottom of the box column, wherein the second steel bars comprise a plurality of longitudinal bars arranged on the periphery of the box column and a plurality of stirrups connected with the longitudinal bars.
The following provides several alternatives, but not as additional limitations to the above-described overall scheme, and only further additions or preferences, each of which may be individually combined for the above-described overall scheme, or may be combined among multiple alternatives, without technical or logical contradictions.
Preferably, the plurality of longitudinal ribs extend downward and have the following connection modes:
mode one: buried to the bottom of the raft;
mode two: and welding with a cross steel frame.
Preferably, the plurality of longitudinal ribs extend downward to the lower side of the cross steel frame.
Preferably, the plurality of longitudinal ribs extend downwards, and the plurality of longitudinal ribs are welded with the top surface of the cross steel frame after being bent at the meeting position of the plurality of longitudinal ribs and the cross steel frame.
Preferably, the cross fixing seat comprises two fixed steel plates which are vertically arranged, and the first reinforcing steel bars are welded with the vertical surfaces of the fixed steel plates after being bent at the meeting position of the first reinforcing steel bars and the fixed steel plates.
Preferably, the longitudinal direction and the transverse direction of the cross fixing seat extend to the outer side of the box column.
Preferably, the first steel bars are woven into steel bar meshes, the steel bar meshes at least comprise an upper steel bar mesh close to the top surface of the raft and a lower steel bar mesh close to the bottom surface of the raft, and the cross steel frame is accommodated between the upper steel bar meshes and the lower steel bar meshes.
Preferably, the two longitudinal steels of the cross steel frame are symmetrically welded on two sides of one transverse steel, and the longitudinal and transverse lengths of the cross steel frame are equal.
Preferably, leveling devices are arranged on both longitudinal and transverse sides of the cross steel frame, and the leveling devices comprise:
the leveling plate is connected with the cross steel frame;
the leveling screw penetrates through the leveling plate;
the support plate is arranged at the bottom of the leveling screw rod;
the upper leveling nut is in threaded fit with the leveling screw rod, and the lower surface of the upper leveling nut abuts against the leveling plate;
the lower leveling nut is in threaded fit on the leveling screw rod, and the upper surface of the lower leveling nut abuts against the leveling plate.
Preferably, the leveling screw rod passes through the lower net piece, and the supporting plate and the leveling plate are respectively positioned at two sides of the lower net piece.
The technical scheme disclosed by the application at least comprises the following beneficial technical effects:
1, selecting a raft foundation form, wherein the integrity is strong, and the uneven settlement is small;
2, the raft foundation scheme has strong adaptability to the field, and is applicable to both a composite foundation and a pile foundation, regardless of the natural foundation;
3, the raft reinforcement adopts a mode of combining hidden beams and uniformly distributed reinforcement, so that bending moment of the bottom plate can be more effectively resisted;
4, the foundation surface can be leveled by adopting a structural form of a cross steel frame with the cross steel beams buried under the columns, so that the installation of other ground equipment is facilitated;
5, because the upper steel column is directly connected with the cross steel frame embedded in the raft, the force transfer of the column pier is more direct and effective (compared with the original outsourcing column foot, the steel column transfers force to outsourcing reinforced concrete, and then the outsourcing reinforced concrete column transfers force to a foundation, and the force transfer is not direct); the structural form of embedding a cross steel frame under the column is adopted to improve the shearing resistance bearing capacity of the column pier by 15%; the bending and shearing resistant bearing capacity is improved; because the steel beam is made of elastic plastic materials, the structural ductility of the column pier can be improved by being buried in the raft of reinforced concrete, and the risk of brittle failure is reduced;
and 6, the scheme of the column foot structure (i.e. column pier) in the foundation structure is simple in structure and convenient to construct. The cross steel frame and the column bottom part can be directly processed in factories, and can be positioned and leveled by adopting a leveling device on site, and meanwhile, the cross steel frame and the column bottom part can be used as a support for reinforcing steel bars at the upper part of the raft, so that the construction is convenient.
7, the general foundation is adopted by the 220kV power distribution unit building and the 110kV power distribution unit building, the raft plates are the same in size and the reinforcement bars are the same, and only the column positions are different, so that the design workload can be reduced, and the construction and the material preparation are convenient.
The advantageous technical effects of the specific structure will be specifically explained in the detailed description.
Drawings
FIG. 1 is a schematic diagram of an infrastructure applied in a 220KV substation in one embodiment;
FIG. 2 is a schematic view of the pillar of FIG. 1;
FIG. 3 is a schematic view of the cross steel frame structure in FIG. 2;
fig. 4 is a schematic structural view of the leveling device in fig. 3.
Reference numerals in the drawings are described as follows:
11. a first reinforcing bar; 12. a second reinforcing bar; 121. longitudinal ribs; 122. stirrups; 2. a raft; 3. a column pier; 31. cross steel frame; 311. transverse steel; 312. longitudinal steel; 32. a cross fixing seat; 33. a box column; 331. a peg; 34. column foot reinforcing piers; 35. leveling means; 351. leveling plates; 352. leveling the screw; 353. a support plate; 354. an upper leveling nut; 355. and a lower leveling nut.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 4, the application discloses a foundation structure of a substation power distribution unit building, the foundation structure includes a raft board 2 poured with a plurality of first reinforcing bars 11 and concrete, and a pier 3 arranged on the raft board 2, and the pier 3 includes:
the cross steel frames 31 are laid in the raft plates 2 in a flat mode, and the cross steel frames 31 are welded and fixed with the adjacent first steel bars 11 in the raft plates 2;
the cross fixing seat 32, the cross fixing seat 32 is welded and fixed in the central area of the top surface of the cross steel frame 31;
the box-shaped column 33, the box-shaped column 33 is vertically fixed in the central area of the top surface of the cross steel frame 31, the bottom edge of the box-shaped column 33 is provided with a clamping groove (not shown) welded with the cross fixing seat 32, the interior of the box-shaped column 33 is a concrete filling area, and a plurality of studs 331 are welded on the peripheral surface of the box-shaped column 33;
the column foot reinforcing piers 34, the column foot reinforcing piers 34 are poured by a plurality of second reinforcing bars 12 and concrete and wrapped at the bottom of the box column 33, and the second reinforcing bars 12 comprise a plurality of longitudinal bars 121 arranged at the periphery of the box column 33 and a plurality of stirrups 122 connected with the plurality of longitudinal bars 121.
In fig. 1, only one column pier 3 is marked, and the rest positions are omitted. According to the technical scheme disclosed by the application, the second steel bars 12 in the cross steel frame 31, the cross fixing seat 32, the box column 33 and the column foot reinforcing piers 34 are directly connected with each other, so that the force transmission of the column piers 3 is more direct and effective (compared with the original outsourcing column feet, the force transmission of the steel column is carried out on outsourcing reinforced concrete, and then the force transmission is carried out on a foundation by the outsourcing reinforced concrete column); the structural form of embedding the cross steel frame 31 under the column is adopted to improve the shearing resistance bearing capacity of the column pier 3 by 15 percent.
Meanwhile, the scheme of the column foot structure (i.e. column pier 3) has simple structure and convenient construction. The cross steel frame 31 and the column bottom part can be directly processed in factories, the leveling device 35 is adopted for positioning and leveling on site, and meanwhile, the cross steel frame can be used as a support for reinforcing steel bars at the upper part of the raft 2, so that construction is convenient.
The technical scheme disclosed by the application optimizes the stress performance of the single column pier 3, optimizes the installation and construction process of the column pier 3 and greatly improves the construction efficiency.
In one embodiment, the plurality of longitudinal ribs 121 extend downward and have the following connection:
mode one: buried to the bottom of the raft 2;
mode two: welded to the cross steel frame 31.
In an actual setting, multiple modes may exist simultaneously. For example, in the embodiment shown in the drawings, a plurality of longitudinal ribs 121 extend downward, the longitudinal ribs 121 meeting the cross steel frame 31 are welded to the top surface of the cross steel frame 31 after being bent at the meeting position, the longitudinal ribs 121 meeting the first reinforcing steel bars 11 are welded to the first reinforcing steel bars 11 after being bent at the meeting position, and the rest are buried in the bottom of the raft 2.
Of course, only one or two connection modes may exist.
In one embodiment, the plurality of longitudinal ribs 121 extend downwardly below the cross steel frame 31. In this embodiment, the vertical bars 121 interfering with other members bypass the interference device and then extend below the cross steel frame 31.
In one embodiment, the plurality of longitudinal ribs 121 extend downward, and the plurality of longitudinal ribs 121 are welded to the top surface of the cross steel frame 31 after being bent at the position where they meet the cross steel frame 31. In this embodiment, the longitudinal ribs 121 that do not originally meet the cross steel frame 31 may be welded to the cross steel frame 31 after being bent.
Each connection mode can be implemented as required, and in principle, the strength of the column pier 3 and the convenience of installation need to be ensured.
Stabilization of the box post 33 is provided by the cross anchor mount 32 in addition to the column foot reinforcement piers 34. In one embodiment, the cross fixing base 32 includes two fixed steel plates vertically arranged, and the first reinforcing steel bar 11 is welded to the vertical surface of the fixed steel plates after being bent at the position where the first reinforcing steel bar meets the fixed steel plates.
The first reinforcing steel bar 11 can provide the support for the fixed steel plate to prevent the box column 33 from toppling over after being welded with the vertical surface of the fixed steel plate, thereby improving the stability of the cross fixing seat 32.
In principle of mechanics, the larger the size of the cross-shaped fixing seat 32, the better the stability of the box-shaped column 33. However, from a practical point of view, the dimensions of the box post 33 are generally limited, so that in one embodiment, both the longitudinal and transverse directions of the cross anchor 32 extend outside the box post 33. The mechanical properties of the cross fixing seat 32 are improved by enlarging the connection projection area of the cross fixing seat 32 and the cross steel frame 31.
The stress of the pier 3 is finally transferred to the raft 2 after being conducted, in an embodiment, the first steel bars 11 are woven into steel bar meshes, and the steel bar meshes at least comprise an upper mesh close to the top surface of the raft 2 and a lower mesh close to the bottom surface of the raft 2, and the cross steel frame 31 is accommodated between the upper mesh and the lower mesh.
The upper net sheet and the lower net sheet form a clamping space constraint cross steel frame 31, so that the column piers 3 and the raft plates 2 are connected into rigid nodes, and the overall performance of the foundation structure is improved.
The connection design form of the cross steel frame 31 also affects the mechanical performance of the pier 3, and in one embodiment, two longitudinal steels 312 of the cross steel frame 31 are symmetrically welded on two sides of one transverse steel 311, and the longitudinal and transverse lengths of the cross steel frame 31 are equal.
The welding of the longitudinal steel 312 and the transverse steel 311 to form the cross steel frame 31 is for convenience of construction, and the lengths of the longitudinal and transverse directions of the cross steel frame 31 are equal to each other so as to provide the column pier 3 with mechanical performance consistent in all directions, and in a specific implementation, slight errors may occur in the lengths of the longitudinal and transverse directions of the cross steel frame 31 due to construction errors and the like, and are not necessarily strictly equal.
In the construction of the foundation structure, the accumulated errors are released everywhere, and in one embodiment, the leveling devices 35 are disposed on both longitudinal and transverse sides of the cross steel frame 31, and the leveling devices 35 include:
a leveling plate 351 connected to the cross steel frame 31;
leveling screws 352 penetrating the leveling plates 351;
the supporting plate 353 is arranged at the bottom of the leveling screw 352;
an upper leveling nut 354 screw-fitted on the leveling screw 352 and having a lower surface abutting against the leveling plate 351;
a lower leveling nut 355 is threadedly fitted on the leveling screw 352 and has an upper surface abutting against the leveling plate 351.
The leveling device 35 can adjust the levelness of the cross steel frame 31 relative to the raft 2 by adjusting the relative positions of the upper leveling nuts 354 and the lower leveling nuts 355, thereby eliminating errors and providing stable performance. The design of the leveling device 35 enables the steel structure production and the construction site construction of the column pier 3 to be independent, and the steel structure of the column pier 3 can be transported to the construction site for construction after batch production in a factory, so that the construction efficiency is greatly improved.
The leveling device 35 can perform additional functions in addition to leveling, and in one embodiment, leveling screws 352 are disposed through the lower mesh, and support plates 353 and leveling plates 351 are disposed on either side of the lower mesh.
In this embodiment, the supporting plate 353 is placed on the top surface of the foundation, and after the concrete is filled, the leveling screw 352 functions as a hooking bar, so that a stable connection effect can be further provided for the cross steel frame 31.
On the concrete parameter selection, the raft plate 2 of the foundation structure is flat plate type, the thickness is not less than 500mm, the top and bottom densely arranged steel bars of the raft plate 2 at the axis are used as hidden beams, the width of the hidden beams is not less than 1200mm, and the bottom and the top of other parts are provided with uniformly distributed steel bars. The foundation structure can be used for two kinds of distribution equipment buildings in common because the 220kv distribution equipment building column position and the 110kv distribution equipment building column position are provided with hidden beams with encrypted steel bars.
According to the technical scheme disclosed by the application, through calculation and field exploration, the mechanical property of the column pier can be effectively enhanced, and the calculation process is as follows:
taking a center column as an example:
column section 1000mmx1000mm
Concrete grade C35
The plate thickness is 500mm. The protective layer had a thickness of 50mm.
Calculate height h0=435 mm
1. The bearing capacity of the bottom plate without the cross steel frame is calculated according to the concrete structural design specification GB 50011-2010:
die-cut bearing capacity of bottom plate:
F el ＝0.7β h ηu m h 0
β h ＝1.0
β s ＝2
α s ＝40
η＝Min{η 1 ,η 2 }＝1.0
u m ＝4×(1000+h 0 )＝5740mm
F el ＝0.7β h f t ηu m h 0 ＝0.7×1.0×1.57×1.0×5740×435＝2744kN
2. the bearing capacity after the cross steel frame is added is calculated according to JGJ92-2016 of the design rule of unbonded prestressed concrete structure:
the cross section of the cross steel frame after the shearing-resistant cross steel frame is added is H350x250x9x14
The length of the cross steel frame extends out of the section of the column by 1200mm.
Die-cut bearing capacity of bottom plate:
F e ′ l ＝0.6f t ηu m h 0 ＝0.6×1.57×1.0×7918×435＝3244kN
increased bearing capacity by 18 percent
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description. When technical features of different embodiments are embodied in the same drawing, the drawing can be regarded as a combination of the embodiments concerned also being disclosed at the same time.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (8)
1. A foundation structure of a substation distribution unit building, characterized in that the foundation structure comprises a raft cast with a plurality of first steel bars and concrete, and a pier arranged on the raft, the pier comprising:
the cross steel frame is laid in the raft in a flat manner and is welded and fixed with the adjacent first steel bars in the raft;
the cross fixing seat is welded and fixed in the central area of the top surface of the cross steel frame;
the box-shaped column is vertically fixed in the central area of the top surface of the cross steel frame, the bottom edge of the box-shaped column is provided with a clamping groove welded with the cross fixing seat, a concrete filling area is arranged in the box-shaped column, and a plurality of pegs are welded on the peripheral surface of the box-shaped column;
the column foot reinforcing piers are formed by pouring a plurality of second steel bars and concrete and wrapping the bottom of the box column, and the second steel bars comprise a plurality of longitudinal bars arranged on the periphery of the box column and a plurality of stirrups connected with the longitudinal bars;
the plurality of longitudinal ribs extend downwards and are connected in the following way:
mode one: buried to the bottom of the raft;
mode two: welding with a cross steel frame;
the longitudinal direction and the transverse direction of the cross fixing seat extend to the outer side of the box column.
2. The substructure of claim 1, wherein the plurality of longitudinal ribs extend downward below the cross steel frame.
3. The foundation structure of claim 1, wherein the plurality of longitudinal ribs are welded to the top surface of the cross steel frame after bending at the locations where they meet the cross steel frame.
4. The foundation structure of claim 1, wherein the cross-shaped fixing base comprises two fixed steel plates which are vertically arranged, and the first steel bar is welded with the vertical surfaces of the fixed steel plates after being bent at the meeting position of the first steel bar and the fixed steel plates.
5. The foundation structure of claim 1, wherein the first rebar is woven into a rebar mesh comprising at least an upper mesh proximate the raft top surface and a lower mesh proximate the raft bottom surface, the cross steel frame being received between the upper mesh and the lower mesh.
6. The substructure of claim 5, wherein the two longitudinal steels of the cross steel frame are symmetrically welded on both sides of a transverse steel, the longitudinal and transverse lengths of the cross steel frame being equal.
7. The substructure of claim 6, wherein the cross steel frame is provided with leveling devices on both longitudinal and lateral sides, the leveling devices comprising:
the leveling plate is connected with the cross steel frame;
the leveling screw penetrates through the leveling plate;
the support plate is arranged at the bottom of the leveling screw rod;
the upper leveling nut is in threaded fit with the leveling screw rod, and the lower surface of the upper leveling nut abuts against the leveling plate;
the lower leveling nut is in threaded fit on the leveling screw rod, and the upper surface of the lower leveling nut abuts against the leveling plate.
8. The foundation structure of claim 7, wherein the leveling screws pass through the lower mesh, and the support plate and leveling plate are located on either side of the lower mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910768924.9A CN110541428B (en) | 2019-08-20 | 2019-08-20 | Basic structure of transformer substation distribution device building |
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| CN201910768924.9A CN110541428B (en) | 2019-08-20 | 2019-08-20 | Basic structure of transformer substation distribution device building |
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| FR2569739A1 (en) * | 1984-08-29 | 1986-03-07 | Labrue Jean Marie | Raft on posts for the foundation of lightweight buildings, method and device for its construction. |
| RU2300604C1 (en) * | 2005-10-07 | 2007-06-10 | Федеральное государственное образовательное учреждение высшего профессионального образования Кубанский государственный аграрный университет | Method for pile-and-slab foundation construction in seismic areas |
| CN103388341A (en) * | 2013-07-29 | 2013-11-13 | 江苏翔森建设工程有限公司 | Large-sized piled raft foundation structure and construction method |
| CN106437033A (en) * | 2016-11-08 | 2017-02-22 | 浙江大学建筑设计研究院有限公司 | Embedded column footing of steel tube concrete column |
| CN108316337A (en) * | 2018-04-10 | 2018-07-24 | 上海电力设计院有限公司 | Integral prefabricated assembled main transformer foundation and oil pit structure for indoor substation |
-
2019
- 2019-08-20 CN CN201910768924.9A patent/CN110541428B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2569739A1 (en) * | 1984-08-29 | 1986-03-07 | Labrue Jean Marie | Raft on posts for the foundation of lightweight buildings, method and device for its construction. |
| RU2300604C1 (en) * | 2005-10-07 | 2007-06-10 | Федеральное государственное образовательное учреждение высшего профессионального образования Кубанский государственный аграрный университет | Method for pile-and-slab foundation construction in seismic areas |
| CN103388341A (en) * | 2013-07-29 | 2013-11-13 | 江苏翔森建设工程有限公司 | Large-sized piled raft foundation structure and construction method |
| CN106437033A (en) * | 2016-11-08 | 2017-02-22 | 浙江大学建筑设计研究院有限公司 | Embedded column footing of steel tube concrete column |
| CN108316337A (en) * | 2018-04-10 | 2018-07-24 | 上海电力设计院有限公司 | Integral prefabricated assembled main transformer foundation and oil pit structure for indoor substation |
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| CN110541428A (en) | 2019-12-06 |
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