CN116446448A - Wall structure for underground transformer substation - Google Patents

Wall structure for underground transformer substation Download PDF

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Publication number
CN116446448A
CN116446448A CN202310419086.0A CN202310419086A CN116446448A CN 116446448 A CN116446448 A CN 116446448A CN 202310419086 A CN202310419086 A CN 202310419086A CN 116446448 A CN116446448 A CN 116446448A
Authority
CN
China
Prior art keywords
wall
cavity
underground
wall body
ventilated
Prior art date
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Pending
Application number
CN202310419086.0A
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Chinese (zh)
Inventor
董淑卿
佘阳阳
李秀璋
韩子俊
张光弢
王胜利
黄瑜
张海刚
史继宁
吴桐
阚昆
任泓瑾
解知彦
许娟
杨朋博
乔文娇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ceec Shaanxi Electric Power Design Institute
Original Assignee
Ceec Shaanxi Electric Power Design Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ceec Shaanxi Electric Power Design Institute filed Critical Ceec Shaanxi Electric Power Design Institute
Priority to CN202310419086.0A priority Critical patent/CN116446448A/en
Publication of CN116446448A publication Critical patent/CN116446448A/en
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F17/00—Vertical ducts; Channels, e.g. for drainage
    • E04F17/04—Air-ducts or air channels
    • 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

Abstract

The application relates to a wall structure for underground substation, wall structure includes: the wall comprises a ventilated cavity outer longitudinal wall, a ventilated cavity outer transverse wall, a top plate and a raft; the plurality of ventilation type cavity outer longitudinal walls and the plurality of ventilation type cavity outer transverse walls enclose a main body space of the transformer substation, and the top plate and the raft are respectively arranged at the top and the bottom of the main body space; the ventilation type cavity outer longitudinal wall comprises an inner cavity wall body, an outer cavity wall body and a cavity, wherein the inner cavity wall body and the outer cavity wall body are arranged in parallel to form the ventilation type cavity outer longitudinal wall, and a cavity is arranged between the inner cavity wall body and the outer cavity wall body; be provided with a plurality of horizontal connecting pieces in the cavity to horizontal connecting piece's both ends respectively with inner chamber wall body and outer chamber wall body connectivity, this application solves underground substation's underground outer wall cross-section size too big, outer wall body arrangement of reinforcement and outer wall edge component arrangement of reinforcement are great and the close proximity outer wall equipment room ventilation heat dissipation capacity is great, lead to the room to have the problem of leaking the risk.

Description

Wall structure for underground transformer substation
Technical Field
The application relates to the technical field of electric power buildings, in particular to a wall structure for an underground transformer substation.
Background
The underground transformer station is a compact transformer station in a full underground arrangement mode which is gradually popularized along with the development of economy and the popularization of intelligent electricity in recent years, various factors such as building, structure, electric equipment arrangement, cable laying, equipment transportation, fire protection, ventilation and the like are comprehensively considered in a limited space, the requirement of power distribution is realized by utilizing the urban underground space, the land utilization rate can be effectively improved, land resources are saved, the problems of land shortage, difficult site selection, expensive land, high removal cost, regional planning coordination and the like of a urban core area can be solved to a certain extent, and the environment of friendly and harmonious city can be created. With the increasing electric load of urban central areas, it has become a trend to build underground substations in urban central areas.
Because the electrical equipment in the building of the underground transformer substation has large volume, various arrangement forms, high process precision, dense electrical pipelines and complex paths, the underground structure with unique construction and structure is required to be arranged according to the requirements of electrical equipment, auxiliary functional rooms, transportation and the like. In general, the building plane of the underground transformer substation is arranged in three rows, the middle is a transportation channel, and for the convenience of installation, operation and maintenance of the incoming and outgoing cables, the main transformer chamber, the GIS chamber, the reactor chamber, the capacitor chamber and the distribution device chamber are arranged on two sides of the transportation channel close to the outer wall, the special building arrangement leads to a large temporary surface of part of the underground outer wall, the temporary height reaches 14m even and is horizontally unsupported, the outer wall is calculated according to a single bent rod piece, and the section size and the reinforcement of the underground outer wall are large.
In a high-intensity fortification area, aiming at the conditions of large span, heavy load, irregular vertical and horizontal, high space and complex stress of an underground transformer substation, the external wall of the conventional underground transformer substation adopts a reinforced concrete structure, the cross section size of the external wall of the underground structure is about 800-1500 mm, the external wall is oversized, a series of problems of large excavation range of a foundation pit, reduction of the effective space in a building, high manufacturing cost and the like are further caused, from the stress analysis perspective, the stress concentration phenomenon at the joint of a beam and the external wall is obvious, the reinforcement of an edge member of the reinforced concrete external wall is large, the design and construction difficulty is increased, meanwhile, electric main equipment is arranged close to the external wall, so that the ventilation and heat dissipation requirements of the room close to the external wall are large, an air inlet and exhaust shaft or ventilation facilities are required to be arranged near the room of the electric equipment, so that the mutual interference of components between ventilation path length and ventilation pipelines is reduced, and under the condition of high underground water level, necessary waterproof measures are also required to be taken based on the consideration of the safety of the electric equipment.
Therefore, research is needed for an external wall structure of an underground transformer substation, which can solve the problems that the cross section size of the external wall of the underground transformer substation is overlarge, the reinforcing bars of the external wall body and the reinforcing bars of the external wall edge components are larger, the ventilation and heat dissipation capacity of equipment rooms close to the external wall is larger, the areas of ventilation pipelines of the equipment rooms led to a corridor and centrally arranged ventilation shafts are larger, and the risk of water leakage of the equipment rooms is difficult.
Disclosure of Invention
In order to solve the problem that the cross section size of the underground outer wall of the underground transformer substation is oversized, the reinforcement of the outer wall body and the reinforcement of the outer wall edge component are large, the ventilation heat dissipation capacity of equipment rooms close to the outer wall is large, the area of the ventilation pipelines leading the equipment rooms to the corridor and the areas of the ventilation shafts which are arranged in a centralized mode are large, and the equipment rooms have the risk of water leakage, the application provides a wall body structure for the underground transformer substation:
according to one aspect of embodiments of the present application, there is provided a wall structure for an underground substation, the wall structure comprising: the wall comprises a ventilated cavity outer longitudinal wall, a ventilated cavity outer transverse wall, a top plate and a raft;
the plurality of ventilation type cavity outer longitudinal walls and the plurality of ventilation type cavity outer transverse walls enclose a main body space of the transformer substation, and the top plate and the raft are respectively arranged at the top and the bottom of the main body space;
the ventilation type cavity outer longitudinal wall comprises an inner cavity wall body, an outer cavity wall body and a cavity, wherein the inner cavity wall body and the outer cavity wall body are arranged in parallel to form the ventilation type cavity outer longitudinal wall, and the cavity is arranged between the inner cavity wall body and the outer cavity wall body;
a plurality of horizontal connecting pieces are arranged in the cavity, and two ends of each horizontal connecting piece are respectively connected with the inner cavity wall body and the outer cavity wall body.
In some embodiments, a plurality of rows of the horizontal connectors are uniformly arranged in the cavity along the height direction, and each row of the horizontal connectors is uniformly distributed along the length direction of the outer longitudinal wall of the ventilated cavity.
In some embodiments, the wall structure further comprises an in-station longitudinal wall and an in-station transverse wall;
the internal longitudinal wall is parallel to the external longitudinal wall of the ventilation type cavity, the internal transverse wall is parallel to the external transverse wall of the ventilation type cavity, and the main body space is divided into a plurality of subspaces by the internal transverse wall and the internal longitudinal wall.
In some embodiments, an H-shaped hidden column is arranged at the connection position of the station inner transverse wall and the ventilation type cavity outer longitudinal wall, and the H-shaped hidden column is matched with the inner cavity walls and the cavity of the station inner transverse wall and the ventilation type cavity outer longitudinal wall.
In some embodiments, the wall structure further comprises a plurality of floors parallel to the roof, and the plurality of floors divide the body space into a plurality of floors.
In some embodiments, the wall structure further comprises an air inlet shaft, the air inlet shaft is arranged between the longitudinal walls in the station, the top of the air inlet shaft extends out of the top plate, one end of the air inlet shaft extending out of the top plate is provided with an air inlet, and two sides of the air inlet shaft, which are in contact with the longitudinal walls in the station, are also provided with air inlets.
In some embodiments, the top of the ventilation type cavity outer longitudinal wall extends out of the top plate, an air outlet is formed in one end of the ventilation type cavity outer longitudinal wall extending out of the top plate, and a plurality of ventilation openings are formed in the inner cavity wall.
In some embodiments, in the cavity, a drain is provided at the bottom of the outer longitudinal wall of the ventilated cavity.
The beneficial effects of the application are that;
1. through setting the outer wall of underground substation into the cavity wall body, reduced unilateral individual layer outer wall thickness, reduced outer wall edge component and wall body arrangement of reinforcement, improved the inside effective utilization space of building, practiced thrift the engineering volume, reduced the construction degree of difficulty for construction progress has shortened construction period, has obvious economic benefits.
2. By using the wall cavity as the vertical ventilation shaft, the building area is reduced, the building layer height and the whole building volume are reduced, the occupied area and the excavation range of the foundation pit are reduced, the engineering removal and compensation cost and the engineering cost are reduced, and the environment protection and the water and soil conservation are facilitated. The equipment room is not in direct contact with the wall body adjacent to the soil layer, so that the waterproof continuous effective function of the equipment room is effectively ensured, the potential safety hazard of water leakage of the equipment room is eliminated, and obvious social benefits are achieved.
3. The problems that the cross section size of the outer wall, the edge members and the reinforcing bars of the wall body of the existing underground transformer substation are large, the ventilation and heat dissipation capacity of equipment rooms close to the outer wall is large, the areas of ventilation pipelines leading the equipment rooms to hallways and intensively arranged ventilation shafts are large, and the equipment rooms have water leakage risks are solved, a new approach is opened up for the design and construction of the underground outer wall of the transformer substation, and the method has great popularization and application prospects.
Drawings
Fig. 1 shows a schematic plan layout view of an underground substation wall structure according to an embodiment of the present application;
FIG. 2 shows a schematic cross-sectional layout of an underground substation wall structure in another embodiment of the present application;
fig. 3 is a schematic flow chart of a construction method of an underground substation wall structure according to another embodiment of the present application;
fig. 4 shows a schematic flow chart of raft construction according to another embodiment of the present application;
fig. 5 shows a schematic flow chart of layered construction according to another embodiment of the present application.
Description of the drawings: 1. a ventilated cavity outer longitudinal wall; 2. a ventilated cavity outer transverse wall; 3. a longitudinal wall in the station; 4. a transverse wall in the station; 5. a top plate; 6. a layer of floor slab; 7. two floors; 8. a raft; 9. an air inlet vertical shaft; 10. an exhaust vertical shaft; 11. and a drainage ditch.
Detailed Description
For purposes of clarity, embodiments and advantages of the present application, the following description will make clear and complete the exemplary embodiments of the present application, with reference to the accompanying drawings in the exemplary embodiments of the present application, it being apparent that the exemplary embodiments described are only some, but not all, of the examples of the present application.
It should be noted that the brief description of the terms in the present application is only for convenience in understanding the embodiments described below, and is not intended to limit the embodiments of the present application. Unless otherwise indicated, these terms should be construed in their ordinary and customary meaning.
The terms "first," second, "" third and the like in the description and in the claims and in the above-described figures are used for distinguishing between similar or similar objects or entities and not necessarily for limiting a particular order or sequence, unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances.
The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or apparatus that comprises a list of elements is not necessarily limited to all elements explicitly listed, but may include other elements not expressly listed or inherent to such product or apparatus.
The underground transformer station is a compact transformer station in a full underground arrangement mode which is gradually popularized along with the development of economy and the popularization of intelligent electricity in recent years, various factors such as building, structure, electric equipment arrangement, cable laying, equipment transportation, fire protection, ventilation and the like are comprehensively considered in a limited space, the requirement of power distribution is realized by utilizing the urban underground space, the land utilization rate can be effectively improved, land resources are saved, the problems of land shortage, difficult site selection, expensive land, high removal cost, regional planning coordination and the like of a urban core area can be solved to a certain extent, and the environment of friendly and harmonious city can be created. With the increasing electric load of urban central areas, it has become a trend to build underground substations in urban central areas.
Because the electrical equipment in the building of the underground transformer substation has large volume, various arrangement forms, high process precision, dense electrical pipelines and complex paths, the underground structure with unique construction and structure is required to be arranged according to the requirements of electrical equipment, auxiliary functional rooms, transportation and the like. In general, the building plane of the underground transformer substation is arranged in three rows, the middle is a transportation channel, and for the convenience of installation, operation and maintenance of the incoming and outgoing cables, the main transformer chamber, the GIS chamber, the reactor chamber, the capacitor chamber and the distribution device chamber are arranged on two sides of the transportation channel close to the outer wall, the special building arrangement leads to a large temporary surface of part of the underground outer wall, the temporary height reaches 14m even and is horizontally unsupported, the outer wall is calculated according to a single bent rod piece, and the section size and the reinforcement of the underground outer wall are large.
In a high-intensity fortification area, aiming at the conditions of large span, heavy load, irregular vertical and horizontal, high space and complex stress of an underground transformer substation, the external wall of the conventional underground transformer substation adopts a reinforced concrete structure, the cross section size of the external wall of the underground structure is about 800-1500 mm, the external wall is oversized, a series of problems of large excavation range of a foundation pit, reduction of the effective space in a building, high manufacturing cost and the like are further caused, from the stress analysis perspective, the stress concentration phenomenon at the joint of a beam and the external wall is obvious, the reinforcement of an edge member of the reinforced concrete external wall is large, the design and construction difficulty is increased, meanwhile, electric main equipment is arranged close to the external wall, so that the ventilation and heat dissipation requirements of the room close to the external wall are large, an air inlet and exhaust shaft or ventilation facilities are required to be arranged near the room of the electric equipment, so that the mutual interference of components between ventilation path length and ventilation pipelines is reduced, and under the condition of high underground water level, necessary waterproof measures are also required to be taken based on the consideration of the safety of the electric equipment.
Therefore, the research on the external wall structure of the underground transformer substation and the structure thereof is very necessary to solve the problems that the cross section size of the external wall of the underground transformer substation is overlarge, the reinforcing bars of the wall body of the external wall and the reinforcing bars of the edge components of the external wall are larger, the ventilation and heat dissipation capacity of equipment rooms close to the external wall is larger, the areas of ventilation pipelines leading the equipment rooms to the corridor and the ventilation shafts which are arranged in a concentrated manner are larger, and the risk of water leakage of the equipment rooms is difficult.
Accordingly, in view of the above problems, the present application proposes a wall structure for an underground substation.
Some embodiments of the present application relate generally to a wall structure for an underground substation, and the first proposal is that: setting the outer wall of the underground transformer substation as a ventilated cavity outer wall; the cavity wall is internally provided with horizontal connecting rods vertically or transversely at regular intervals; the connection part of the beam and the outer wall is combined with the inner cavity, the outer cavity and the wall body, and a hidden column similar to an H-shaped section is arranged in size; the wall cavity is used as a vertical ventilation shaft, so that the plane layout and the airflow organization are optimized; the equipment room is not in direct contact with the wall body adjacent to the soil layer, the risk of water leakage of the equipment room is reduced, and the problems that the cross section size of the underground outer wall of the underground transformer substation is overlarge, the reinforcement of the outer wall body and the reinforcement of the outer wall edge member are large, the ventilation and heat dissipation capacity of the equipment room adjacent to the outer wall is large, and the risk of water leakage exists in the equipment room are effectively solved.
The wall structure for an underground substation provided by the present application is described below with reference to fig. 1 to 2.
FIG. 1 shows a schematic plan layout of an underground substation wall structure; fig. 2 shows a schematic cross-sectional layout of an underground substation wall structure in another embodiment of the present application.
As shown in fig. 1, the wall structure includes: the wall comprises a ventilated cavity outer longitudinal wall, a ventilated cavity outer transverse wall, a top plate and a raft;
the plurality of ventilation type cavity outer longitudinal walls and the plurality of ventilation type cavity outer transverse walls enclose a main body space of the transformer substation, and the top plate and the raft are respectively arranged at the top and the bottom of the main body space;
the ventilation type cavity outer longitudinal wall comprises an inner cavity wall body, an outer cavity wall body and a cavity, wherein the inner cavity wall body and the outer cavity wall body are arranged in parallel to form the ventilation type cavity outer longitudinal wall, and the cavity is arranged between the inner cavity wall body and the outer cavity wall body;
a plurality of horizontal connecting pieces are arranged in the cavity, and two ends of each horizontal connecting piece are respectively connected with the inner cavity wall body and the outer cavity wall body.
The outer longitudinal wall of the ventilation type cavity and the outer transverse wall of the ventilation type cavity are mutually perpendicular and are connected through the two, a main body space of a transformer substation is formed, the number and the size of the outer longitudinal wall of the ventilation type cavity and the outer transverse wall of the ventilation type cavity are selected according to site conditions and needs, an inner cavity wall body and an outer cavity wall body jointly form the outer longitudinal wall of the ventilation type cavity, the inner cavity wall body is located at one side close to the inside of the main body space, the outer cavity wall body is located at one side far away from the inside of the main body space, a certain gap is reserved between the inner cavity wall body and the outer cavity wall body, and the outer wall of the underground transformer substation is set into the cavity wall body, so that the thickness of a single-side single-layer outer wall is reduced, and microcracks caused by concrete pouring hydration heat are reduced.
In some embodiments, as shown in fig. 1 and 2, a plurality of rows of the horizontal connectors are uniformly arranged in the cavity along the height direction, and each row of the horizontal connectors is uniformly distributed along the length direction of the outer longitudinal wall of the ventilated cavity.
The horizontal connecting rods are vertically or transversely arranged at regular intervals in the cavity type wall, so that the length of a computing unit of the outer wall is reduced, and the section thickness and the reinforcement of the outer wall are optimized.
In some embodiments, as shown in fig. 1, the wall structure further includes an in-station longitudinal wall and an in-station transverse wall;
the internal longitudinal wall is parallel to the external longitudinal wall of the ventilation type cavity, the internal transverse wall is parallel to the external transverse wall of the ventilation type cavity, and the main body space is divided into a plurality of subspaces by the internal transverse wall and the internal longitudinal wall.
The ventilation type cavity outer longitudinal wall and the ventilation type cavity outer transverse wall enclose a main body space of the transformer substation, and the main body space is divided into a plurality of subspaces by a plurality of station inner transverse walls and station inner longitudinal walls arranged in the main body space for the transformer substation to use.
In some embodiments, as shown in fig. 1, an H-shaped hidden column is arranged at a connection position of the in-station transverse wall and the ventilated cavity outer longitudinal wall, and the H-shaped hidden column is matched with the in-station transverse wall, the inner cavity wall of the ventilated cavity outer longitudinal wall and the cavity.
The hidden columns similar to the H-shaped cross section are arranged in the joint of the beam and the outer wall in the combination mode, the outer cavity wall body and the cavity in the size arrangement mode, so that the stress performance of the original constraint component is effectively improved, the stress performance of the original constraint component can be greatly improved, the reinforcement of the reinforced concrete outer wall edge component is reduced, and the bearing capacity, the stability and the rigidity of the outer wall are improved.
In some embodiments, as shown in fig. 2, the wall structure further includes a plurality of floors, which are parallel to the top plate, and the plurality of floors divide the body space into a plurality of floors.
In this embodiment, two floors, i.e., a first floor and a second floor, are provided to divide the main space into a first space, a second space and a third space.
In some embodiments, as shown in fig. 2, the wall structure further includes an air intake shaft, the air intake shaft is disposed between the in-station longitudinal walls, the top of the air intake shaft extends out of the top plate, an air inlet is disposed at one end of the air intake shaft extending out of the top plate, and air inlets are also disposed at two sides of the air intake shaft, which are in contact with the in-station longitudinal walls.
In some embodiments, as shown in fig. 2, the top of the outer longitudinal wall of the ventilated cavity extends out of the top plate, and an air outlet is formed at one end of the outer longitudinal wall of the ventilated cavity extending out of the top plate, and a plurality of ventilation openings are formed in the inner cavity wall.
The wall cavity is used as an exhaust vertical shaft, so that the plane layout is optimized, the building area is reduced, the airflow organization is optimized, and the ventilation energy consumption is reduced; meanwhile, the problems of complex corridor pipeline system, insufficient space and the like are solved, and the building floor height and the whole building volume can be effectively reduced after optimization.
In some embodiments, as shown in fig. 2, in the cavity, a drain is provided at the bottom of the outer longitudinal wall of the ventilated cavity.
By utilizing the structural structure of the cavity type wall body, the equipment room is not in direct contact with the wall body adjacent to the soil layer, and even if water leakage occurs due to failure of water prevention on the outer side of the cavity wall body, the water leakage can be directly discharged through the drainage ditch at the bottom of the cavity, so that the risk of water leakage of the equipment room is further reduced.
The beneficial effects of some embodiments of the present application are:
1. through setting the outer wall of underground substation into the cavity wall body, reduced unilateral individual layer outer wall thickness, reduced outer wall edge component and wall body arrangement of reinforcement, improved the inside effective utilization space of building, practiced thrift the engineering volume, reduced the construction degree of difficulty for construction progress has shortened construction period, has obvious economic benefits.
2. By using the wall cavity as the vertical ventilation shaft, the building area is reduced, the building layer height and the whole building volume are reduced, the occupied area and the excavation range of the foundation pit are reduced, the engineering removal and compensation cost and the engineering cost are reduced, and the environment protection and the water and soil conservation are facilitated. The equipment room is not in direct contact with the wall body adjacent to the soil layer, so that the waterproof continuous effective function of the equipment room is effectively ensured, the potential safety hazard of water leakage of the equipment room is eliminated, and obvious social benefits are achieved.
3. The problems that the cross section size of the outer wall, the edge members and the reinforcing bars of the wall body of the existing underground transformer substation are large, the ventilation and heat dissipation capacity of equipment rooms close to the outer wall is large, the areas of ventilation pipelines leading the equipment rooms to hallways and intensively arranged ventilation shafts are large, and the equipment rooms have water leakage risks are solved, a new approach is opened up for the design and construction of the underground outer wall of the transformer substation, and the method has great popularization and application prospects.
Fig. 3 shows a schematic flow chart of a construction method of an underground substation wall structure according to another embodiment of the present application, fig. 4 shows a schematic flow chart of raft construction according to another embodiment of the present application, and fig. 5 shows a schematic flow chart of layered construction according to another embodiment of the present application.
The following describes, with reference to fig. 3 to 5, a construction method applicable to the wall structure for an underground substation provided in the present application:
as shown in fig. 3, the construction method includes:
step 100: constructing a fender post;
step 200: precipitation;
step 300: foundation pit excavation and construction supporting measures are carried out simultaneously;
step 400: pouring a cushion layer;
step 500: constructing raft plates;
step 600: performing layered construction;
step 700: constructing a top plate;
step 800: waterproof construction of the outer wall and the top plate;
step 900: and backfilling earthwork.
In some embodiments, as shown in fig. 4, the raft construction further comprises the steps of:
step 410: waterproof construction of the raft;
step 420: and pouring raft boards.
In some embodiments, as shown in fig. 5, the layered construction includes layered exterior wall integral casting, which includes the steps of:
step 610: constructing an inner cavity wall;
step 620: installing a horizontal connecting piece;
step 630: and constructing the outer cavity wall.
The foregoing description, for purposes of explanation, has been presented in conjunction with specific embodiments. However, the above discussion in some examples is not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.

Claims (8)

1. A wall structure for an underground substation, the wall structure comprising: the wall comprises a ventilated cavity outer longitudinal wall, a ventilated cavity outer transverse wall, a top plate and a raft;
the plurality of ventilation type cavity outer longitudinal walls and the plurality of ventilation type cavity outer transverse walls enclose a main body space of the transformer substation, and the top plate and the raft are respectively arranged at the top and the bottom of the main body space;
the ventilation type cavity outer longitudinal wall comprises an inner cavity wall body, an outer cavity wall body and a cavity, wherein the inner cavity wall body and the outer cavity wall body are arranged in parallel to form the ventilation type cavity outer longitudinal wall, and the cavity is arranged between the inner cavity wall body and the outer cavity wall body;
a plurality of horizontal connecting pieces are arranged in the cavity, and two ends of each horizontal connecting piece are respectively connected with the inner cavity wall body and the outer cavity wall body.
2. The wall structure for an underground transformer substation according to claim 1, wherein a plurality of rows of the horizontal connectors are uniformly arranged in the cavity in the height direction, and each row of the horizontal connectors is uniformly distributed along the length direction of the outer longitudinal wall of the ventilated cavity.
3. The wall structure for an underground substation of claim 2, further comprising an in-station longitudinal wall and an in-station transverse wall;
the internal longitudinal wall is parallel to the external longitudinal wall of the ventilation type cavity, the internal transverse wall is parallel to the external transverse wall of the ventilation type cavity, and the main body space is divided into a plurality of subspaces by the internal transverse wall and the internal longitudinal wall.
4. A wall structure for an underground substation as defined in claim 3, wherein an H-shaped hidden column is arranged at a connection position of the transverse wall and the outer longitudinal wall of the ventilated cavity, and the H-shaped hidden column is arranged in fit with an inner cavity wall of the outer longitudinal wall of the ventilated cavity, an outer cavity wall of the outer longitudinal wall of the ventilated cavity and the cavity.
5. A wall structure for an underground substation as recited in claim 1, further comprising a plurality of floors, said floors being parallel to said roof, and a plurality of said floors dividing said main body space into a plurality of layers of space.
6. The wall structure for an underground substation as set forth in claim 4, further comprising an air intake shaft disposed between the in-station longitudinal walls, wherein the top of the air intake shaft extends out of the top plate, and an air inlet is provided at an end of the air intake shaft extending out of the top plate, and air inlets are also provided at both sides of the air intake shaft contacting with the in-station longitudinal walls.
7. The wall structure for an underground transformer substation according to claim 6, wherein the top of the outer longitudinal wall of the ventilated cavity extends out of the top plate, an air outlet is formed in one end of the outer longitudinal wall of the ventilated cavity extending out of the top plate, and a plurality of ventilation openings are formed in the inner cavity wall.
8. A wall structure for an underground substation as defined in claim 1, wherein in said cavity, a drain is provided at the bottom of the outer longitudinal wall of said ventilated cavity.
CN202310419086.0A 2023-04-18 2023-04-18 Wall structure for underground transformer substation Pending CN116446448A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310419086.0A CN116446448A (en) 2023-04-18 2023-04-18 Wall structure for underground transformer substation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310419086.0A CN116446448A (en) 2023-04-18 2023-04-18 Wall structure for underground transformer substation

Publications (1)

Publication Number Publication Date
CN116446448A true CN116446448A (en) 2023-07-18

Family

ID=87128441

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310419086.0A Pending CN116446448A (en) 2023-04-18 2023-04-18 Wall structure for underground transformer substation

Country Status (1)

Country Link
CN (1) CN116446448A (en)

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