CN113668612A - Modular combined prefabricated electric power working well and construction method thereof - Google Patents

Abstract

The invention provides a modular combined prefabricated electric power working well and a construction method thereof, wherein the working well comprises a plurality of L-shaped side walls, a plurality of cover plates and at least two end part sealing plates; the cover plate is arranged on the two corresponding L-shaped side walls to form an annular well ditch in a splicing mode, the annular well ditches are sequentially arranged to form annular length well ditches, and the end sealing plates are arranged on openings of the annular length well ditches. This application can satisfy assembling of many through wells such as sharp well, corner well, three-way well, four-way well, and the form is nimble various, is applicable to the requirement of various designs and operating mode.

Description

Modular combined prefabricated electric power working well and construction method thereof

Technical Field

The invention relates to the field of power cable laying construction, in particular to a modular combined prefabricated assembly type power working well and a construction method thereof.

Background

The electric power working well is an indispensable facility in the power cable laying process, adopts the cast-in-place mode construction usually, and its construction flow includes: the method comprises the following steps of steel sheet pile supporting, foundation pit excavation, foundation treatment, formwork erecting, steel bar binding, concrete pouring, concrete curing, formwork dismantling, backfilling and soil sealing and the like, a large amount of labor is needed in field operation, the construction period is long, hidden engineering acceptance is complex, environmental pollution is large, urban road plugging is caused by the construction operation in cities, inconvenience and influence are brought to life and production of citizens, and the existing operation mode is behind the concept of modern city development and construction gradually.

Thus, the electric working well of the prior art, also has a place to lift.

Disclosure of Invention

Aiming at the defects, the invention aims to provide a modular combined prefabricated electric power working well and a construction method thereof, which adopt factory production and field modular assembly, have the advantages of simple structure, flexible and various forms, high construction efficiency, short construction period, low labor intensity, economy, environmental protection and the like, and solve the problems in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

a modular combined prefabricated electric working well comprises a plurality of L-shaped side walls, a plurality of cover plates and at least two end sealing plates; the cover plate is arranged on the two corresponding L-shaped side walls to form an annular well ditch in a splicing mode, the annular well ditches are sequentially arranged to form annular length well ditches, and the end sealing plates are arranged on openings of the annular length well ditches.

According to the modular combined prefabricated electric power working well, the L-shaped side wall comprises a straight wall, a plane wall and a butt-joint platform, one side of the plane wall is connected with the straight wall to form an L shape, the butt-joint platform is arranged on the other side of the plane wall, and the height of the butt-joint platform is lower than that of the plane wall; the cover plate comprises a cover flat plate and two cover plate overlap edge staggered tables, and the two cover plate overlap edge staggered tables are arranged on two sides of the cover flat plate; during connection, the butt-jointed staggered platforms of the two L-shaped side walls are abutted to be connected, the butt-jointed staggered platforms are locked and sealed by the bottom connecting piece, and the two cover plates are lapped and staggered platforms cover and connect the end surfaces of the straight walls of the two L-shaped side walls.

The prefabricated electric power working well of modularization combination, the working well still includes an at least first side wall that turns to, an at least second side wall that turns to, an at least corner apron and an at least corner backing plate, L shape side wall, apron, first side wall that turns to, second turn to side wall, corner apron and an at least corner backing plate and piece into one-way corner annular shaft ditch.

According to the modular combined prefabricated electric power working well, the first steering side wall comprises a first L-shaped side wall, a first pair of staggered platforms and a first well width adjusting side wall; the second steering side wall comprises a second L-shaped side wall, a second splicing platform and a second well width adjusting side wall, the first well width adjusting side wall of the first steering side wall and the second well width adjusting side wall of the second steering side wall are correspondingly arranged, and an opening door shape is formed after the first steering side wall and the second steering side wall are assembled; the corner cover plate comprises a corner cover flat plate, two corner cover overlap joint dislocation tables and a cover plate cantilever table; the corner base plate comprises a plane base plate and a corner pad splicing staggered platform; when the L-shaped side walls are connected, the butt-jointed staggered platform of each L-shaped side wall abuts against the corner pad butt-jointed staggered platform connected with the corner base plate, the butt-jointed staggered platform and the corner pad butt-jointed staggered platform are locked and sealed by a bottom connecting piece, one side of each first turning side wall and one side of each second turning side wall abut against and are connected with the corner base plate, and the corner cover plate covers and connects the upper ends of the first turning side wall and the second turning side wall; one of the cover plates is connected with the end surface of the straight wall of the L-shaped side wall in a covering mode, and the other cover plate is connected with the cover plate cantilever platform of the corner cover plate in a covering mode.

The prefabricated electric power working well of modularization combination, the working well still includes two at least steering L shape side walls and a steering cover board, two the butt-joint staggered platform that turns to L shape side wall supports to lean on the connection, with the bottom connecting piece will two the butt-joint staggered platform lock seal, the steering cover board covers and connects two the upper end that turns to L shape side wall is pieced together one and is turned to annular well pit.

The prefabricated electric power working well of modularization combination, the working well still includes an at least manhole walling crib, the apron corresponds a manhole well head is seted up to the position of manhole walling crib the interior edge of manhole well head is seted up a manhole walling crib location tongue-and-groove, the manhole walling crib sets up on the manhole walling crib location tongue-and-groove.

The utility model provides a prefabricated electric power working well of modularization combination, the working well includes an end closing plate and an annular length well ditch, connect an end closing plate on the one end opening of annular length well ditch, an one-way corner annular well ditch is connected to the other one end of annular length well ditch, the end closing plate sets up on L shape side wall and apron, and another one end closing plate sets up and turns to side wall one side at first side wall and the second that turns to.

A construction method of a modular combined prefabricated electric working well is characterized by comprising the following steps: and 5: assembling a working well ditch body: before assembly, sealing rubber strips are pasted in sealing rubber strip groove strips on the end faces of the L-shaped side wall and the steering side wall, the L-shaped side wall, the steering side wall and the end sealing plate are hoisted by using a hoisting frame, prestressed steel stranded wires penetrate into prestressed tensioning holes between the longitudinal side walls of the working well and between the side walls and the end sealing plate to perform post-tensioning connection, and the side walls are transversely connected by bolts; step 6: filling details in the working well; and 8: and (3) mounting a cover plate: before installation, a sealing adhesive tape is stuck in a sealing adhesive tape groove strip at the upper part of the L-shaped side wall or cement mortar is uniformly paved on the side wall, the sealing adhesive tape is stuck in the sealing adhesive tape groove strip at the side surface of the cover plate, and then the cover plate is hoisted by using a hoisting frame; and step 9: and installing a manhole and a well ring.

In the construction method according to the preferred embodiment of the present application, before the step 5, the method further includes: step 1: excavating a foundation trench; step 2: carrying out base layer treatment and paying off positioning; and step 3: laying a cushion layer; and 4, step 4: leveling the cushion layer.

The construction method according to the preferred embodiment of the present application further includes, between step 6 and step 8: and 7: installing equipment inside the working well, and in addition, after the step 9, further comprising: step 10: filling the details of the cover plate; step 11: the end sealing plate is connected with the calandria; step 12: backfilling and compacting earthwork, and repairing the pavement.

The modular combined prefabricated electric power working well convenient to construct is designed, factory production is adopted, field modular assembly is adopted, the modular combined prefabricated electric power working well has the advantages of being simple in structure, flexible and diverse in form, high in construction efficiency, short in construction period, low in labor intensity, economical, environment-friendly and the like, construction and installation are simpler and quicker, and installation efficiency is improved.

Due to the adoption of the technical characteristics, compared with the prior art, the invention has the following advantages and positive effects:

firstly, the prefabricated assembly type electric power working well connection mode is completely factory prefabricated, field assembly is achieved, safety and reliability are achieved, controllability is good, acceptance is convenient, and hidden engineering acceptance hidden danger of cast-in-place operation is avoided;

secondly, the prefabricated assembly type electric working well is a single component, has light dead weight and simple assembly form, meets the requirements of small-sized mechanical construction, and is slightly influenced by engineering environment;

thirdly, the assembly of multi-way wells such as a straight line well, a corner well, a three-way well, a four-way well and the like can be met, the form is flexible and various, and the requirements of various designs and working conditions are met;

fourthly, the assembled working well can be transformed at any time by partially replacing prefabricated parts, and random transformation and transformation among multi-way wells such as a straight well, a corner well, a three-way well, a four-way well and the like are completed;

the method can meet the requirements of different well widths by changing the size of the bottom plate, is low in die transformation cost, is suitable for multifunctional dies, and saves die cost;

sixth, the construction speed of assembling is fast, and the method is not limited by weather and time, and especially in urban areas, the effects of grooving in the evening, assembling at night, sealing soil in the morning and traffic in the daytime can be achieved;

seventh, all prefabricated parts are connected in a sealing and reinforcing mode, the overall structure is strong, rigidity is high, and the prefabricated part is suitable for various working conditions;

eighth, the steering is changed through the steering side wall, so that a large corner space is provided, the steering layout of various pipelines is met, and the engineering construction is facilitated;

ninth, the opening of the end sealing plate is flexibly provided with holes according to the size of the external calandria, and a rib outlet structure for reinforcing connection is arranged, so that the connection strength of the calandria and the working well is further enhanced;

tenth, all prefabricated component's of this application installation all satisfies self-supporting stable requirement, and the scene need not to set up interim support, and the construction is convenient high-efficient.

Of course, it is not necessary for any particular embodiment of the inventive concept to be implemented to achieve all of the above technical effects at the same time.

Drawings

FIG. 1 is a schematic view of a modular combination prefabricated electric power working well according to the present application;

FIG. 2 is a schematic view of an L-shaped sidewall of the present application;

FIG. 3 is a schematic view of a cover plate of the present application;

FIG. 4 is a schematic view of an annular well of the present application;

FIG. 5 is a schematic view of another embodiment of the present disclosure without a working well cover;

FIG. 6 is a schematic view of a first turning sidewall of the present application;

FIG. 7 is a second turning sidewall schematic view of the present application;

FIG. 8 is a schematic view of the connection of the corner cover plate and the cover plate of the present application;

FIG. 9 is a schematic view of the corner pad of the present application;

FIG. 10 is a schematic illustration of a dual steering well according to the present application;

FIG. 11 is a schematic illustration of a four turn work well of the present application;

FIG. 12 is a schematic view of an end single-turn working well according to the present application;

FIG. 13 is a schematic view of a manhole wellhead of the present application;

FIG. 14 is a schematic view of a manhole well collar of the present application;

FIG. 15 is a schematic view of an end closure plate according to the present application;

FIG. 16 is a schematic view of another end closure plate of the present application;

FIG. 17 is a schematic view of the end closure plate and gauntlet of the present application;

FIG. 18 is a schematic view of a tab reserve opening of the present application;

FIG. 19 is a cut-away schematic view of the tab and tab reserve opening connection location of the present application;

FIG. 20 is a schematic view of a water collection reserve port of the present application;

FIG. 21 is a cut-away view of the connection between the water collection well and the water collection preformed opening of the present application;

FIG. 22 is a cut-away view of the connection position of the pull ring and the collector well of the present application;

FIG. 23 is a schematic view of a work well and foundation of the present application;

FIG. 24 is a schematic illustration of the present application in the assembly of a work well;

FIG. 25 is another schematic illustration of a work well assembly of the present application;

FIG. 26 is a further schematic illustration of a work well assembly of the present application;

FIG. 27 is a schematic view of the cover plate and L-shaped side wall bolt lock seal of the present application;

FIG. 28 is a schematic view of the present application cover plate and steering cover plate bolt lock;

FIG. 29 is a block diagram illustrating the construction method of the present application.

Detailed Description

Several preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention is not limited to only these embodiments. The invention is intended to cover alternatives, modifications, equivalents, and alternatives that may be included within the spirit and scope of the invention. In the following description of the preferred embodiments of the present invention, specific details are set forth in order to provide a thorough understanding of the present invention, and it will be apparent to those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures, components, and so forth have not been described in detail so as not to unnecessarily obscure aspects of the present invention.

Referring to fig. 1 and 4, a modular assembly prefabricated electric working well according to the present invention includes a plurality of L-shaped sidewalls 10, a plurality of cover plates 20, and at least two end sealing plates 30; the cover plate 20 is arranged on the two corresponding L-shaped side walls 10 to form an annular well ditch 1, the annular well ditches 1 are sequentially arranged to form an annular length well ditch, and the end sealing plate 30 is arranged on an opening of the annular length well ditch. In the embodiment shown in fig. 1, the number of the annular well ditches 1 is 7, but it should not be limited to this application, and more or less annular well ditches may be provided according to design requirements, which should be the protection scope of this application. The number of end closure plates 30 is shown as two because in this embodiment the annular length well openings are two, but this is not intended to limit the application and some openings may be designed according to design considerations.

Please refer to fig. 2 this application L shape side wall schematic diagram, L shape side wall 10 includes straight wall 11, plane wall 12 and to piecing together wrong platform 13, one side of plane wall 12 and straight wall 11 are connected and are formed the L shape, to piecing together wrong platform 13 and setting up one side in addition of plane wall 12, highly being less than to piecing together wrong platform 13 plane wall 12's height, connection structure's installation and hiding can be carried out in the design of this kind of difference in height, for example pour concrete and make level, in order to guarantee joint strength and waterproof sealing nature straight wall 11 and plane wall 12's side is seted up sealed adhesive tape groove, and when the construction, the inside is poured into sealed glue, guarantees with the joint strength and the waterproof sealing nature of butt joint spare.

In addition, referring to fig. 3, the cover plate 20 includes a cover plate 21 and two cover plate overlap edge slab staggering 22, the two cover plate overlap edge slab staggering 22 are disposed on two sides of the cover plate 21, in order to ensure the connection strength and the waterproof sealing performance, a sealant strip groove is formed on the side edge butt joint surface of the cover plate 20, and during construction, sealant is poured into the groove to ensure the connection strength and the waterproof sealing performance with the butt joint member; during connection, please refer to fig. 4, which is a schematic view of the annular well, the butt-jointed staggered platforms 13 of the two L-shaped side walls 10 are abutted to connect, the two butt-jointed staggered platforms 13 are locked by the bottom connecting member 2, and the two cover plate overlap side staggered platforms 22 of the cover plate 20 cover and connect the end surfaces of the straight walls 11 of the two L-shaped side walls 10 to form the annular well 1.

In addition, referring to fig. 5, the working well further includes at least one first turning sidewall 41, at least one second turning sidewall 42, at least one turning cover plate 43, and at least one turning backing plate 44, and the L-shaped sidewall 10, the cover plate 20, the first turning sidewall 41, the second turning sidewall 42, the turning cover plate 43, and the at least one turning backing plate 44 form a unidirectional turning annular well. As shown in fig. 5, the cover plate 20 and the corner cover plate 43 are shown separately for convenience of illustration, but they should not be used to limit the present application; in this embodiment, the plane portion left by the two L-shaped side walls 10 on one side is replaced by two corner backing plates 44, a support structure below is completed by one first turning side wall 41 and one second turning side wall 42, the cover plate 20 and the corner cover plate 43 are laid on the support structure, and the end sealing plate 30 is disposed at the opening, so as to initially complete a one-way corner annular well. In this embodiment, through size design, two L-shaped side walls 10 are taken out, but the application cannot be limited, and through design, only one L-shaped side wall 10 may be taken out, or three L-shaped side walls 10 may be taken out.

Next, referring to fig. 6, fig. 7, fig. 8 and fig. 9, the first turning sidewall 41 includes a first L-shaped sidewall 411, a first pair of mismatching platforms 412 and a first width-adjusting sidewall 413; the second steering side wall 42 includes a second L-shaped side wall 421, a second staggered table 422 and a second well width adjusting side wall 423, the first well width adjusting side wall 413 of the first steering side wall 41 and the second well width adjusting side wall 423 of the second steering side wall 42 are correspondingly disposed, the well width adjusting side wall is used for adjusting the width, as shown in fig. 5, the two well width adjusting side walls form an open door shape after being assembled, and the closer the distance between the two well width adjusting side walls is, the smaller the opening degree of the door is; in fig. 8, the corner cover 43 includes a corner cover plate 431, two corner cover overlapping offset tables 432 and a cover platform 433, and the cover 20 is disposed on the cover platform 433 of the corner cover 43; in fig. 9, the corner pad 44 includes a planar pad 441 and a corner pad pair-staggering station 442.

As shown in fig. 5, during connection, the butt-jointed platform 13 of the L-shaped side wall 10 abuts against the corner pad butt-jointed platform 442 connected to the corner pad 44, the butt-jointed platform 13 and the corner pad butt-jointed platform 442 are locked and sealed by the bottom connecting member 2, one side of the first turning side wall 41 and one side of the second turning side wall 42 abut against the corner pad 44, and the corner cover plate 43 covers and connects the upper ends of the first turning side wall 41 and the second turning side wall 42; one of the cover plate 20 and the cover plate overlap offset 22 cover the end surface of the straight wall 11 connected with the L-shaped side wall 10, and the other cover plate overlap offset 22 of the cover plate 20 and the cover plate cantilever 433 connected with the corner cover plate 43.

As shown in fig. 5, after turning, a distance may be further increased, please refer to fig. 10, the working well further includes at least two turning L-shaped side walls 45 and a turning cover plate 46, the opposite staggered platforms of the two turning L-shaped side walls 45 are connected in an abutting manner, the two staggered platforms are locked and sealed by a bottom connecting member 2, and the turning cover plate 46 covers and connects the upper ends of the two turning L-shaped side walls 45 to form a turning annular shaft groove. In the embodiment of fig. 10, the number of designed turns is two, and the designed turns are in two directions at the same position, so that on the basis of fig. 5, the corresponding two L-shaped side walls 10 are removed, two corner pads 44 are added instead, and then one first turning side wall 41 and one second turning side wall 42 are added to complete the support structure below, and the cover plate 20 laid on the upper side is original, and then the corner cover plate 43 is covered to form the double turns at the same position.

In addition, please refer to fig. 11, which is a schematic diagram of a four-turn working well, please refer to fig. 12, which is a schematic diagram of an end single-turn working well, the working well of the present application may be designed in various turns, and the opening after turning and the end closing plate 30 are an interface of a cable, or may be continued to move forward after turning, so as to form a longer turning working well, which is a versatile structure in view of design requirements. In summary, in the position where a working well needs to be steered or multiple-pass through, any two adjacent L-shaped side walls 10 on one side or both sides are removed, a corner well trench is additionally arranged at the same position and is formed by splicing two steering side walls and a corner cover plate, a corner base plate is laid at the corresponding position of the bottom of the working well, the steering or multiple-pass connection mode of the working well is realized, all prefabricated components are connected by adopting prestress tensioning or bolts, and waterproof rubber strips are adhered among the prefabricated components for waterproof treatment.

Referring to fig. 12, the present application is a schematic diagram of an end single-turn working well in a modular combination prefabricated electric working well, which differs from other working wells described above in that the working well is single-turn and end-on, and the end seal plate is disposed in the turned working well, so that the structure of the other working well is the same as that of the other working wells described above, and is incorporated herein by reference. As shown in fig. 12, the working well includes an end sealing plate 47 and the annular length well, the end sealing plate 30 is connected to an opening at one end of the annular length well, the other end of the annular length well is connected to the one-way corner annular well, the end sealing plate 47 is disposed on the L-shaped side wall 10 and the cover plate 20, the other end sealing plate 30 is disposed on one side of the first turning side wall 41 and the second turning side wall 42, as shown in the figure, two turning L-shaped side walls 45 and a turning cover plate 46 are further added on one side of the first turning side wall 41 and the second turning side wall 42, and then the end sealing plate 30 is disposed, or may be directly mounted on the first turning side wall 41 and the second turning side wall 42.

Referring to fig. 1, 13 and 14, in order to facilitate the entry and exit of workers, the working well of the present application further includes at least one manhole well ring 25, and in the embodiment of fig. 1, the number of the manhole well rings 25 is two, but it should not be used to limit the present application, and one or more manhole well rings are less, and the protection scope of the present application should be limited as long as the workers can enter the manhole; as shown in fig. 13, a manhole mouth 23 is formed at a position of the cover plate 20 corresponding to the manhole shaft collar 25, a manhole shaft collar positioning groove 24 is formed at an inner edge of the manhole shaft mouth 23, and the manhole shaft collar 25 is disposed on the manhole shaft collar positioning groove 24.

Referring to fig. 1, 15, 16 and 17, the working well of the present application further includes a drain pipe 3, and fig. 15 and 16 are schematic views of two end closure plates, wherein the drain pipe 3 is disposed on the end closure plate 30, and the connection manner includes a wet connection and a dry connection. In fig. 15 and 17, the wet connection mode, i.e. the cast-in-place concrete connection mode, is used to enclose the designed calandria 3 with concrete attachment plates, and the bent reserved ribs are added with the cast-in concrete to finally form the calandria 3; the dry connection is realized by adopting bolt connection, the prefabricated calandria 3 is in lap joint with the hole of the end sealing plate 30, and measures such as cushion blocks are adopted to ensure that the prefabricated calandria 3 is positioned in the center of the hole.

Referring to fig. 18 and 19, fig. 18 is a schematic view illustrating that a tab reservation opening 14 is formed in the L-shaped sidewall 10, and fig. 19 is a schematic view illustrating a connection position of a tab and the tab reservation opening; the method comprises the steps that counterforce is provided when network cables are arranged inside the connecting position of the two L-shaped side walls 10, a counterforce device is fixed, the pull ring reserved opening 14 is formed in the lower portion of each L-shaped side wall 10, a pull ring prefabricated block 4 is laid below the pull ring reserved opening 14, and the pull ring 5 is arranged on each pull ring prefabricated block 4.

Referring to fig. 20 and 21, fig. 20 is a schematic sectional view illustrating a water collection reserved opening 15 formed in the L-shaped sidewall 10, and fig. 21 is a schematic sectional view illustrating a connection position of a water collection well and the water collection reserved opening; two the place that L shape side wall 10 connects, when needs will be concentrated unnecessary ponding, we set up on the L shape side wall 10 water collection reservation mouth 15 below lays a sump pit 6, and set up pull ring 5 on the sump pit 6 and provide the counter force when arranging the net twine in inside, play the effect of fixed reaction device, please refer to fig. 22 this application pull ring 5 and the schematic diagram is cut open to the hookup location of sump pit 6.

Please refer to fig. 29, the construction method of the present application includes the following steps:

step 101: excavating a foundation trench: adopt man-machine to mix and excavate, make the protection of side slope according to the geological conditions, adopt artifical excavation to design elevation when excavator digging groove to tank bottom elevation 200mm to 400mm, prevent to surpass to dig.

Step 102: base layer processing, paying off and positioning: and (3) after the earthwork is excavated, carrying out reinforcement treatment such as tamping, filling and replacing, piling and the like on the substrate, releasing the boundary line of the working well on the base layer after reinforcement, marking the positions of the bottom water collecting well 6 and the pull ring pit, and excavating a pit slot for arranging the water collecting well 6 and the pull ring precast block 4.

Step 103: laying a cushion layer: before laying the bed course 7, should set up the elevation control wedge on the basic unit earlier, control 7 elevations of bed course, then hoist prefabricated sump pit 6, pull ring prefabricated section 4, make the sump pit 6 and pull ring prefabricated section 4 go up along the elevation unanimous with the control wedge elevation, lay the bed course 7 at last, the bed course 7 is cast in situ concrete, hoist prefabricated concrete cushion board, the bed course 7 surface should be leveled smooth, the elevation is unanimous, please refer to fig. 23 the below of L shape side wall 10 still includes the bed course 7.

Step 104: leveling cushion layers: after the cushion concrete is hardened, placing elevation positioning blocks at the four corners of a cushion layer 7 of a prefabricated component of the working well to be installed, connecting the four corners by using elevation control strips to form a closed frame, uniformly spreading dry and hard cement mortar in the frame and strickling the cement mortar, and hanging out the positioning lines of the working well at the bottom side line and the middle waist line of the working well respectively. As shown in fig. 23, a leveling layer 8 is further included below the L-shaped side wall 10, the leveling layer 8 is a hard cement mortar layer, the leveling layer 8 is below the L-shaped side wall 10, and the cushion layer 7 is below the leveling layer 8 according to the connection sequence.

Step 105: assembling a working well ditch body: referring to fig. 24, fig. 25 and fig. 26, different assembly steps are schematically illustrated, before assembly, sealing rubber strips are adhered to the sealing rubber strip grooves on the end faces of the L-shaped side wall 10 and the steering side wall, the L-shaped side wall 10 and the steering side wall are hoisted by using a hoisting frame, so that the L-shaped side wall 10 and the steering side wall are stably and slowly placed on the leveling layer 8, the outer side faces of the L-shaped side wall 10 and the steering side wall are consistent with a hanging line, after the side wall of the working well is installed, the end sealing plates 30 are hoisted in the same manner, prestressed steel strands penetrate into prestressed tensioning holes between the longitudinal side walls of the working well and between the side walls and the end sealing plates 30 for post-tensioning connection, and the side walls are transversely connected by bolts.

The post-tensioning connection of the prestressed steel strand comprises segment tensioning and integral tensioning, wherein the segment tensioning is realized by fastening one section of assembled working well by using the steel strand, the prestressed anchorage device is fixedly arranged in the end part sealing plate 30, the prestressed tensioning locking hole of the steering side wall and the prestressed tensioning mounting groove of the L-shaped side wall 10, the integral tensioning is realized by adopting the common steel strand to serially connect the working well side wall and the end part sealing plate 30, and the prestressed anchorage device is fixedly arranged in the prestressed tensioning locking holes of the end part sealing plates at the two ends of the working well.

The side wall bolted connection for L shape side wall 10, turn to the side direction two pairs and piece into U type work shaft ditch body after, to two liang of correspondences of pre-buried threaded sleeve on the split joint platform 13, adopt and connect steel backing plate and bolt and carry out the connection reinforcement processing, connect the side wall into a whole.

Step 106: filling details in the working well: after the side wall and the end sealing plate 30 of the working well are installed, the chamfer joint formed by the inner edge chamfer inside the working well is filled and leveled by adopting the dual-sulfur sealant and the mortar. The method comprises the steps of brushing exposed prestressed anchors, connecting bolts and other connecting pieces inside a working well by adopting isolating protective agents such as glass cement, asphalt cement and the like, then covering prestressed tensioning lock holes and prestressed tensioning mounting grooves with cement mortar and prefabricated plugs, filling fine stone concrete and cement mortar in a splicing groove formed by splicing staggered platforms at the bottom, forming a bottom longitudinal drainage ditch with the height 10mm higher than the upper surface of the connecting bolt and 20mm lower than the upper surface of a working well bottom plate, and paving a protective cover on the drainage ditch.

The paving protection cover is a precast concrete drainage ditch grate cover plate and a steel mesh grate cover plate.

Step 107: installing equipment inside the working well: after the working well ditch body is installed, a cable support connecting piece is welded on the embedded installation piece on the side wall of the working well, then a cable support is installed, or the cable support is directly welded, and facilities such as the grounding flat steel are installed in the same way. And metal pull ring fittings are fixedly installed in the pull ring installation grooves on the end sealing plate 30 and the water collecting well 6 by bolts.

This step can also be performed after the entire working well has been installed.

Step 108: and (3) mounting a cover plate:

before installation, a sealing rubber strip is pasted in a sealing rubber strip groove strip on the upper portion of the L-shaped side wall 10 or cement mortar is uniformly spread on the side wall, the thickness of the cement mortar is not larger than 10mm, the sealing rubber strip is pasted in a sealing rubber strip groove strip on the side face of the cover plate 20, then the cover plate 20 is stably and slowly hoisted and placed on the L-shaped side wall 10 by using a hoisting frame, the position of the cover plate 20 is finely adjusted, and bolt mounting holes in the cover plate 20 correspond to pre-buried threaded sleeves on the side wall one to one. Referring to fig. 27, the cover plate 20 and the L-shaped sidewall 10 are shown in a bolt-locking manner.

And hoisting the steering side walls in the same way, wherein one side of the cover plate 20 at the steering position is lapped on the L-shaped side wall 10, the other side of the cover plate is lapped on the cover plate cantilever 433 of the corner cover plate 43, and meanwhile, the cover plate 20 is finely adjusted, so that the bolt mounting holes in the cover plate 20 correspond to the preformed holes in the cover plate cantilever 433 one by one. Referring to fig. 28, the cover plate 20 and the corner cover plate 43 of the present application are shown in a bolt-lock configuration.

After the cover plate 20 is lifted and adjusted, the cover plate 20 is connected with the side wall of the working well, the cover plate 20 and the corner cover plate 43 together by bolts and gaskets in the bolt mounting holes on the cover plate 20.

Step 109: installing a manhole and a well ring: before installation, the cover plate with the manhole well mouth is cleaned up, the positioning socket of the manhole well ring 25 is placed in the manhole well mouth 23 of the cover plate stably and slowly by using a lifting frame with the positioning socket facing downwards, the manhole well ring 25 is adjusted to be in socket fit with the manhole well mouth 23 of the cover plate, the connecting bolt holes are aligned, the next section of manhole well ring 25 is hoisted in the same mode, and finally, the connecting bolt holes are connected with connecting bolts which penetrate into the connecting bolt holes and are screwed for anchoring.

Step 1010: filling details of the cover plate: after the cover plate 20 and the manhole ring 25 are installed, the cover plate 20 is coated with the connecting pieces such as the exposed bolts and the like by using the isolation protective agent such as glass cement, asphalt cement and the like, and then the bolt installation holes are covered by using cement mortar and prefabricated plugs to be level with the surface of the cover plate 20.

Step 1011: the end sealing plate is connected with the calandria: the connection of the drain pipe 3 to the working well comprises a wet connection and a dry connection.

Wet connection be cast in situ concrete connection, prefabricated calandria 3 and the 30 entrance to a cave overlap joint of tip shrouding, reserve the muscle in the entrance to calandria 3 one side to with 3 tip of calandria preformed muscle overlap joints and tie up well, 3 terminal surfaces of calandria with the template shutoff in the working well inboard, the bottom and the both sides formwork of outside calandria 3 and the 30 node of tip shrouding, then pour concrete and 3 upper surface parallel and level of prefabricated calandria, at last pour and build a precast concrete attachment strap on the concrete again, the trilateral of attachment strap is taken respectively on the filling of prefabricated calandria 3 and formwork both sides.

The dry connection adopts bolted connection, prefabricated calandria 3 and the 30 entrance to a cave overlap joint of tip shrouding, adopt measures such as cushion, guarantee that prefabricated calandria 3 is located entrance to a cave central authorities, leave 10mm to 30 mm's space all around, adopt the sealed glue of dual sulphur, fill the space with mortar etc. and seal, then beat expansion bolts respectively in calandria 3 and tip shrouding 30 corresponding position outside the working well with calandria 3 junction, adopt L shape steel connecting piece connection anchor, at last brush the connecting piece with isolation protective agent such as glass cement, pitch glue and cover cement mortar or concrete and protect.

Step 1012: backfilling and compacting earthwork, and repairing the pavement.

In summary, due to the adoption of the technical characteristics, compared with the prior art, the invention has the following advantages and positive effects:

firstly, the prefabricated assembly type electric power working well connection mode is completely factory prefabricated, field assembly is achieved, safety and reliability are achieved, controllability is good, acceptance is convenient, and hidden engineering acceptance hidden danger of cast-in-place operation is avoided;

secondly, the prefabricated assembly type electric working well is a single component, has light dead weight and simple assembly form, meets the requirements of small-sized mechanical construction, and is slightly influenced by engineering environment;

thirdly, the assembly of multi-way wells such as a straight line well, a corner well, a three-way well, a four-way well and the like can be met, the form is flexible and various, and the requirements of various designs and working conditions are met;

fourthly, the assembled working well can be transformed at any time by partially replacing prefabricated parts, and random transformation and transformation among multi-way wells such as a straight well, a corner well, a three-way well, a four-way well and the like are completed;

the method can meet the requirements of different well widths by changing the size of the bottom plate, is low in die transformation cost, is suitable for multifunctional dies, and saves die cost;

sixth, the construction speed of assembling is fast, and the method is not limited by weather and time, and especially in urban areas, the effects of grooving in the evening, assembling at night, sealing soil in the morning and traffic in the daytime can be achieved;

seventh, all prefabricated parts are connected in a sealing and reinforcing mode, the overall structure is strong, rigidity is high, and the prefabricated part is suitable for various working conditions;

eighth, the steering is changed through the steering side wall, so that a large corner space is provided, the steering layout of various pipelines is met, and the engineering construction is facilitated;

ninth, the opening of the end sealing plate 30 is flexibly holed according to the size of the external calandria 3, and a rib outlet structure for reinforcing connection is arranged, so that the connection strength of the calandria 3 and the working well is further enhanced;

tenth, all prefabricated component's of this application installation all satisfies self-supporting stable requirement, and the scene need not to set up interim support, and the construction is convenient high-efficient.

The preferred embodiments of the invention are provided solely to aid in the illustration of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, 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 of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents. The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and it is intended that all equivalent variations and modifications of the present invention as those skilled in the art can be made without departing from the spirit and scope of the present invention.

Claims (10)

1. A modular combined prefabricated electric working well is characterized in that the working well comprises a plurality of L-shaped side walls, a plurality of cover plates and at least two end part seal plates; the cover plate is arranged on the two corresponding L-shaped side walls to form an annular well ditch in a splicing mode, the annular well ditches are sequentially arranged to form annular length well ditches, and the end sealing plates are arranged on openings of the annular length well ditches.

2. The modular combined prefabricated electric working well as claimed in claim 1, wherein said L-shaped side walls comprise a straight wall, a plane wall and a split platform, one side of said plane wall and said straight wall are connected to form an L-shape, said split platform is disposed on the other side of said plane wall, and the height of said split platform is lower than the height of said plane wall;

the cover plate comprises a cover flat plate and two cover plate overlap edge staggered tables, and the two cover plate overlap edge staggered tables are arranged on two sides of the cover flat plate;

during connection, the butt-jointed staggered platforms of the two L-shaped side walls are abutted to be connected, the butt-jointed staggered platforms are locked and sealed by the bottom connecting piece, and the two cover plates are lapped and staggered platforms cover and connect the end surfaces of the straight walls of the two L-shaped side walls.

3. The modular combination prefabricated electric working well of claim 2, further comprising at least one first turning sidewall, at least one second turning sidewall, at least one turning cover plate and at least one turning pad plate, wherein the L-shaped sidewall, the cover plate, the first turning sidewall, the second turning sidewall, the turning cover plate and the at least one turning pad plate are spliced to form a one-way turning annular well.

4. The modular combination prefabricated electric power working well of claim 3, wherein said first diverting sidewall comprises a first L-shaped sidewall, a first pair of staggered stages and a first well width adjusting sidewall; the second steering side wall comprises a second L-shaped side wall, a second splicing platform and a second well width adjusting side wall, the first well width adjusting side wall of the first steering side wall and the second well width adjusting side wall of the second steering side wall are correspondingly arranged, and an opening door shape is formed after the first steering side wall and the second steering side wall are assembled; the corner cover plate comprises a corner cover flat plate, two corner cover overlap joint dislocation tables and a cover plate cantilever table; the corner base plate comprises a plane base plate and a corner pad splicing staggered platform;

when the L-shaped side walls are connected, the butt-jointed staggered platform of each L-shaped side wall abuts against the corner pad butt-jointed staggered platform connected with the corner base plate, the butt-jointed staggered platform and the corner pad butt-jointed staggered platform are locked and sealed by a bottom connecting piece, one side of each first turning side wall and one side of each second turning side wall abut against and are connected with the corner base plate, and the corner cover plate covers and connects the upper ends of the first turning side wall and the second turning side wall; one of the cover plates is connected with the end surface of the straight wall of the L-shaped side wall in a covering mode, and the other cover plate is connected with the cover plate cantilever platform of the corner cover plate in a covering mode.

5. The modular combined prefabricated electric working well as claimed in claim 4, wherein said working well further comprises at least two L-shaped turning side walls and a turning cover plate, the butt-jointed platforms of the two L-shaped turning side walls are abutted and connected, the two butt-jointed platforms are locked and sealed by a bottom connecting member, and the turning cover plate covers and connects the upper ends of the two L-shaped turning side walls to form a turning annular well ditch.

6. The modular combined prefabricated electric working well as claimed in claim 1, wherein the working well further comprises at least one manhole well ring, a manhole well head is formed in a position, corresponding to the manhole well ring, of the cover plate, a manhole well ring positioning groove and tongue is formed in the inner edge of the manhole well head, and the manhole well ring is arranged on the manhole well ring positioning groove and tongue.

7. The utility model provides a prefabricated electric power working well of modularization combination which characterized in that, the working well includes an end closing plate and an annular length well ditch, connect an end closing plate on the one end opening of annular length well ditch, an one-way corner annular well ditch is connected to the other one end of annular length well ditch, the end closing plate sets up on L shape side wall and apron, and another one end closing plate sets up and turns to side wall one side at first side wall and the second that turns to.

8. A construction method of the modular combined prefabricated electric working well according to claims 1 to 7, characterized in that the construction method comprises the following steps:

and 5: assembling a working well ditch body: before assembly, sealing rubber strips are pasted in sealing rubber strip groove strips on the end faces of the L-shaped side wall and the steering side wall, the L-shaped side wall, the steering side wall and the end sealing plate are hoisted by using a hoisting frame, prestressed steel stranded wires penetrate into prestressed tensioning holes between the longitudinal side walls of the working well and between the side walls and the end sealing plate to perform post-tensioning connection, and the side walls are transversely connected by bolts;

step 6: filling details in the working well;

and 8: and (3) mounting a cover plate: before installation, a sealing adhesive tape is stuck in a sealing adhesive tape groove strip at the upper part of the L-shaped side wall or cement mortar is uniformly paved on the side wall, the sealing adhesive tape is stuck in the sealing adhesive tape groove strip at the side surface of the cover plate, and then the cover plate is hoisted by using a hoisting frame;

and step 9: and installing a manhole and a well ring.

9. The construction method according to claim 8, wherein the step 5 is preceded by:

step 1: excavating a foundation trench;

step 2: carrying out base layer treatment and paying off positioning;

and step 3: laying a cushion layer;

and 4, step 4: leveling the cushion layer.

10. The construction method according to claim 9, further comprising, between the step 6 and the step 8: and 7: installing equipment inside the working well, and in addition, after the step 9, further comprising:

step 10: filling the details of the cover plate;

step 11: the end sealing plate is connected with the calandria;

step 12: backfilling and compacting earthwork, and repairing the pavement.

Images