阅读说明：本技术 一种地埋式变电站施工方法 (Construction method of buried transformer substation ) 是由 郑凌逶 于 2019-09-08 设计创作，主要内容包括：本发明公开了一种地埋式变电站施工方法,主要施工步骤为,根据支撑箱体体积大小挖基坑,放置稳定后向支撑箱体内填土,待支撑箱体填满后抽出外侧立板,用振捣棒将支撑箱体内土体振动密实,沿箱变本体外部周围采用夯实机夯实。有益效果在于：该施工方法适用于软土、湿土等地质条件松软易塌陷的施工环境,外侧立板的抽出使得倒置梯形为支撑面,增强了箱变本体的支撑力,保证设备运行安全。(The invention discloses a construction method of an underground transformer substation, which mainly comprises the following construction steps of digging a foundation pit according to the volume of a supporting box body, filling soil into the supporting box body after the supporting box body is placed stably, drawing out an outer vertical plate after the supporting box body is filled, vibrating and compacting a soil body in the supporting box body by using a vibrating rod, and tamping the soil body by using a tamping machine along the periphery of the outer part of a box transformer substation body. Has the advantages that: the construction method is suitable for soft and easily-collapsed construction environments under geological conditions such as soft soil, wet soil and the like, the inverted trapezoid is used as a supporting surface due to the fact that the vertical plate on the outer side is pulled out, supporting force of the box transformer substation body is enhanced, and running safety of equipment is guaranteed.)

1. A construction method of a buried transformer substation 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 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 soil for digging the foundation pit into the supporting box body through the filling opening and filling the soil;

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) inserting a vibrating rod into the filling opening, and vibrating and compacting the soil in the supporting box body;

6) and (4) propelling and compacting around the box transformer body from near to far by using a compactor.

2. A buried substation construction method according to claim 1, characterized in that: and 5) after the step 5) is finished, sealing the filling opening by adopting a cover plate.

3. A 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. A 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 graded broken stones can be introduced into the supporting box body through the filling port and filled in the step 3).

5. A 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.

Technical Field

The invention relates to the field of buried substations, in particular to a construction method of a 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 buried transformer substation 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 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 soil for digging the foundation pit into the supporting box body through the filling opening and filling the soil;

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) inserting a vibrating rod into the filling opening, and vibrating and compacting the soil in the supporting box body;

6) and (4) propelling and compacting around the box transformer body from near to far by using a compactor.

Further, after the step 5) 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 graded broken stones can be introduced into the supporting box body through the filling port and filled in the steps.

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) 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 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, a top plate and a bottom plate of the box-type transformer substation body 1 and the supporting box bodies 2 are arranged in a shared and integrated mode, an outer side vertical plate 3 of the supporting box body 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 soil for digging the foundation pit into the supporting box body through the filling opening and filling the soil;

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) inserting a vibrating rod into the filling opening, and vibrating and compacting the soil in the supporting box body;

6) and (4) propelling and compacting around the box transformer body from near to far by using a compactor.

After construction is finished, soil serving as filler is compacted at two sides of the box transformer substation body 1 and is positioned between the top plate and the bottom plate, the top plate and the bottom plate strengthen the support for the box transformer substation body, the box body structure with the trapezoidal cross section is formed, the structure with the wide upper part and the narrow lower part can effectively prevent the box body from settling, the contact surface between the side surface of the box transformer substation body and the soil is increased, and the support stability is further increased,

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, graded broken stones can be adopted in the step 3) to pass through the filling ports, the filling ports are guided into the supporting box body and filled with the crushed stones, the water permeability of the foundation can be enhanced through the graded broken stones, and the stability of the filler support is further ensured through the arrangement of the water seepage holes.

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.