CN107769141A - Overhead type comprehensive wiring piping lane - Google Patents

Abstract

The invention relates to a pipe gallery for laying cables in common trenches, in particular to a pipe gallery for overhead integrated wiring. The key points of its structure are that it includes supporting columns and a comprehensive pipe gallery. Section, each group of pipe gallery section includes side wall, top cover and bottom plate. It is a herringbone structure; multiple cantilever brackets capable of erecting various pipelines are installed on the side wall, and the cantilever brackets are all extended and suspended to the cabin space, and one end of the support column is supported and installed on the ground foundation or support surface. The upper end surface of the other end is connected to the bottom plate of the pipe gallery section. The pipe gallery section and supporting columns are prefabricated steel components. The opening surfaces are connected to form an overall comprehensive pipe gallery. The advantages are that the construction is convenient, the operation is simple, the construction period is short, the cost is low, and the maintenance and repair are convenient.

Description

Pipe gallery for overhead integrated wiring

technical field

The invention relates to a pipe gallery for laying cables in common trenches, in particular to a pipe gallery for overhead integrated wiring, which is mainly used in newly-built areas in industrial (industrial) parks.

Background technique

With the development of society, urban land is becoming more and more tense. Most of the lines, including power cables and communication cables, cannot be laid on the ground. , in order to solve this problem, the city develops underground space and establishes an underground comprehensive pipe gallery, and all pipelines are laid in the underground pipe gallery of the municipal main road. According to the provisions of GB 50838, the definition of comprehensive pipe corridor is: "the structures and auxiliary facilities built underground in the city to accommodate two or more types of urban engineering pipelines". In urban construction, the transfer from overhead to underground is also regarded as an important construction project.

The construction of the traditional underground comprehensive pipe gallery needs to first excavate the foundation trench along the pipe gallery axis, then pour or use prefabricated assembly technology to construct the reinforced concrete pipe gallery structure, after the pipe gallery structure is poured, carry out waterproofing work, and finally backfill the foundation trench , and carry out the construction of the ground structure layer or green restoration, and carry out the construction of auxiliary facilities such as ventilation, drainage, lighting, etc., so that the conditions for laying various pipelines are met.

However, in the emerging industrial (industrial) parks of cities, in addition to residential areas with relatively dense buildings and roads, in industrial parks, a large number of energy supply pipelines need to be equipped for industrial plants, and these pipelines need to be laid along with the roads. However, the step-by-step installation of factories in the industrial park may take a long time. If the pipelines are laid in the ground, not only will they face cumbersome maintenance, but also there may be a lot of excavation, which will affect the traffic in the park; if the pipelines are laid in a comprehensive pipeline corridor Underground pipelines not only have a long construction period and have a great impact on the surrounding environment, but also have a huge investment, which is not conducive to maintenance.

Contents of the invention

The object of the present invention is to provide a pipe gallery for overhead integrated wiring with convenient construction, simple operation, short construction period, low cost, and easy repair and maintenance based on the shortcomings of the prior art.

The stated purpose of the present invention is achieved by the following approach:

The structural points of the pipe gallery for overhead integrated wiring are that it includes supporting columns and a comprehensive pipe gallery. The comprehensive pipe gallery includes multiple sets of pipe gallery sections. The wall includes left and right side walls, which stand on the two sides of the bottom plate respectively, and are located between the top cover and the bottom plate. Cantilever brackets, the cantilever brackets are all extended and suspended towards the cabin space, one end of the support column is supported and installed on the ground foundation or the support surface, and the upper end surface of the other end is connected to the bottom plate of the pipe gallery section, the pipe gallery section and the support The columns are all prefabricated steel components. After the ground foundation is poured on site, the prefabricated steel components of the pipe gallery section are installed and spliced on site, and the opening surfaces of the front and rear pipe gallery sections are connected to form an overall comprehensive pipe gallery.

The supporting column is a column used to support the comprehensive pipe gallery, and several supporting columns are distributed along the direction of the pipe gallery; the comprehensive pipe gallery is a closed corridor structure, which is spliced by several pipe gallery sections. On the open side, the top cover is designed in the same herringbone structure as the traditional roof, which is not only aesthetically pleasing but also conducive to drainage from the top. The comprehensive pipe gallery of the present invention is installed on the ground in an overhead manner, and the pipe gallery originally buried underground is changed to be installed on the ground overhead, and different medium-voltage power cables, communication cables, and water supply pipes can be laid in the pipe gallery. Energy supply pipeline. The pipe gallery is prefabricated and assembled with all-steel structure. Except for the foundation that needs to be poured on site, the rest of the components, including the supporting components and the pipe gallery section, are prefabricated in the factory. Reduce the workload on the site, improve construction efficiency, shorten the construction period, and reduce construction costs; at the same time, through the planning of the industrial park, the supporting pillars are generally laid on the road or in the green belt of the factory area, without affecting the land use of the park, and can be used according to the planning of the park Carry out adaptive design, follow up gradually with the construction of the park, without affecting the adjustment of the building construction of the park, and have little impact on the surrounding environment. The overhead pipe gallery design facilitates inspection and maintenance work, and the construction of ventilation, drainage, lighting and other auxiliary facilities can be relatively reduced, which reduces the construction amount and construction cost and gives more space for cable layout.

The pipe gallery section of the present invention can be a single-cabin structure, that is, the pipe gallery is a single cabin, specifically:

The pipe gallery section is arranged in a single cabin and one side. The cantilever bracket is installed on one of the left and right side walls, and the opposite side space is the maintenance walkway.

Alternatively, the pipe gallery section is arranged in a single-cabin double-sided arrangement, and the cantilever brackets are installed on the left and right side walls respectively, and the middle of the cantilever brackets on both sides is the maintenance walkway.

In the single-chamber structure, medium-voltage, low-voltage and communication cables are all installed in the same cabin, and are arranged on the left and right according to the specifications, and water pipes can be distributed under the cantilever bracket.

The pipe gallery section can also be a double-cabin structure, that is, the pipe gallery is divided into two cabins on the left and right, specifically:

The pipe corridor section is a double-cabin double-sided structure. A middle partition is set between the left side wall and the right side wall. The middle partition divides the space into two left and right cabins. On the side walls, the space near the middle partition in each cabin is set as an inspection walkway.

Alternatively, the pipe gallery section is a double-cabin four-sided structure, and a middle partition is set between the left side wall and the right side wall. The middle partition divides the space into two left and right cabins, and the left side wall, right side wall and middle partition Cantilever brackets are distributed on both sides of each cabin, so that both sides in each cabin body have cantilever brackets, and the space in the middle of the cantilever brackets on both sides is the maintenance walkway.

The double-chamber structure can distinguish high and low pressure pipelines and lay them separately, which can be selected according to the actual construction needs of the park.

It also includes a support platform, which is located between the support column and the bottom plate of the pipe gallery section, the bottom surface is connected to the support column, and the top surface is used for placing and connecting the bottom plate of the pipe gallery section.

Considering the relatively large volume of the pipe gallery section, in order to further stabilize the overall structure, a supporting platform can be added as needed, such as in the case of a double cabin structure. The support platform can be integrally constructed with the support column, or welded and fixed on site.

The supporting column is either a double-pier column or a single-pier column. When it is a double-pier column, the two columns are cross-supported and connected.

Single pier columns can be used when single-cabin or double-cabin double-side layout is adopted, while double-pier upright columns are best used for double-cabin four-side layout. When a single pier is used, the foundation is an independent foundation, and when a double pier is used, a combined foundation is used. The double-pier columns are connected by cross braces, which can meet the requirements of lateral stability between the two columns.

The foundation of the supporting column is either an independent plate type pillar foundation, or a pile foundation supporting foundation.

According to the soil properties of the park, the foundations of the supporting columns are different: when the local foundation soil is cohesive soil or other strata that can be used as the foundation bearing layer, the foundation adopts an independent plate-type pillar foundation; when the local foundation soil is soft soil, then Pile foundations may be used as the foundation for supporting piers. This is the case where the support column is supported on the ground. When it needs to be supported on other infrastructure, it can be designed according to the support conditions to ensure the safety and stability of the support.

The supporting columns are made of steel pipes with equal wall thickness, on which there is a hot-dip galvanized anti-corrosion layer, and a stiffener plate is arranged at the connection between the upper end and the bottom plate of the pipe gallery section, and the rib plate is perpendicular to the lower end surface of the bottom plate of the pipe gallery section and along the ring Weekly distribution.

The two inner sides of the pipe gallery section are provided with transparent shutters, and the floor is paved with grid plates.

Permeable shutters can be completely closed, and at the same time can be connected to the outside world at a certain angle. In this way, it can not only meet the requirements of sun protection and rain protection, but also meet the requirements of ventilation and lighting inside the corridor. The use of grid panels not only meets the needs of personnel, but also meets the requirements of drainage and ventilation of the channel.

The pipe gallery section of the comprehensive pipe gallery is prefabricated and assembled with an all-steel structure, and the longitudinal side wall adopts a truss structure.

Therefore, the truss structure is adopted in the longitudinal direction, and the steel frame system is adopted in the transverse direction to ensure the stability of the structure.

Among the multiple support columns supporting the integrated pipe gallery, the distance between every two adjacent support columns along the direction of the pipe gallery is 8-12m.

Taking the direction of the comprehensive pipe corridor as the longitudinal direction, a support column is distributed every 8-12m, which is generally laid in the green belt of the road or factory area, which does not affect the land use of the park and does not occupy the construction space of the park. If it is a column with double piers, the distance between the horizontal double columns is 4.0m.

In summary, the present invention provides a pipe gallery for overhead integrated wiring, which changes the power comprehensive pipe gallery buried underground into an overhead installation, and medium-voltage power cables, communication cables and water supply pipes can be laid in the pipe gallery and other different energy supply pipelines to meet the relevant needs of the factory in the industrial park. The present invention has following technical effect:

1. The pipe gallery is prefabricated and assembled with all-steel structure. Except for the foundation that needs to be poured on site, the rest of the components are prefabricated in the factory, with high processing precision and low cost, and can greatly reduce the workload on site, greatly improve construction efficiency and shorten the construction period. .

2. The overhead pipe gallery does not require complicated civil construction, and its ventilation, drainage, lighting and other facilities can directly use natural conditions. Compared with the underground pipe gallery, it can greatly reduce the relevant equipment, simplify the construction procedure, and reduce the amount of construction work. The construction cost is reduced, and at the same time, the construction risk is also reduced because the overhead pipe gallery is not restricted by the soil conditions of the stratum and there is no hidden project.

3. It can solve the problem that it is difficult to distinguish high and low voltage cables in the underground pipe gallery, and the wiring is carried out in a double-cabin structure. If the existing underground pipe gallery is made into a double-cabin structure, the earth construction cost is high, the construction period is long, and the impact on the environment is large, so it is difficult to realize.

4. It has the conditions for personnel inspection and passage, and personnel inspection and maintenance are simpler and more convenient, and the safety and reliability are higher.

Description of drawings

Fig. 1 is a cross-sectional schematic diagram of a pipe gallery for overhead integrated wiring arranged on one side of a single cabin according to the present invention.

Fig. 2 is a cross-sectional structural schematic diagram of a pipe gallery for overhead integrated wiring arranged on both sides of a single cabin according to the present invention.

Fig. 3 is a cross-sectional structural schematic diagram of the overhead integrated wiring pipe gallery arranged on four sides of the double cabin according to the present invention.

Fig. 4 is a schematic diagram of the vertical section structure of the overhead integrated wiring pipe gallery according to the present invention.

The present invention will be further described below in conjunction with the examples.

Detailed ways

Example 1:

This embodiment takes a single-pier-supported single-cabin double-side arrangement structure as an example, and the single-side arrangement components can be understood with reference to the structure described in this embodiment in conjunction with Fig. 1 .

Referring to attached drawing 2, the pipe gallery for single-cabin overhead integrated wiring supported by a single pier includes a support column 1 with a single pier and a comprehensive pipe gallery. Along the direction of the integrated pipe gallery, a support column is arranged at an interval of 8-10m 1. The support column 1 is made of steel pipe with equal wall thickness, the specification can be Φ325/12, it is hot-dip galvanized and anti-corrosion, and the overhead height is ranging from 4.0m to 6.0m; When the local foundation soil is cohesive soil or other strata that can be used as the foundation bearing layer, the foundation adopts an independent plate-type pillar foundation; when the local foundation soil is weak soil, pile foundations can be used as the foundation of the supporting pier. The support column 1 is a prefabricated component. After the ground foundation is poured, the support column 1 can be directly connected and installed on site.

The comprehensive pipe gallery includes a plurality of pipe gallery sections, each pipe gallery section includes a side wall 2, a top cover 3 and a bottom plate 4, and the side wall 2 includes left and right side walls, standing vertically on both sides of the bottom plate 4 On the top, between the top cover 3 and the bottom plate 4, the top cover 3 has a herringbone structure in cross section, which is convenient for rainproof and drainage, and the bottom plate 4 is fixedly connected with the upper end surface of the support column 1, and reinforcement ribs can be added to assist in fixing. A plurality of cantilever supports 6 capable of erecting various pipelines are installed on the side wall 2, and the plurality of cantilever supports 6 are arranged on both sides in a multi-layered manner, that is, cantilever supports 6 are distributed on both side walls, and both sides The space in the middle of the cantilever support is the maintenance walkway 7; the internal net space size of the pipe gallery is: 3.0m wide × 2.4m high, and the net dimension of the maintenance channel is: 1.0m wide × 1.9m high.

The pipe gallery section is a prefabricated steel component. After the on-site foundation is poured, the on-site installation and splicing are carried out, and the opening faces of the front and rear pipe gallery sections are connected to form an overall integrated pipe gallery. frame system (refer to Figure 4). Three loops of 35kV/10kV medium-voltage cables A can be arranged inside the comprehensive utility gallery, and several loops of communication cables C and two water supply pipes F can be arranged at the same time; the support length of the cantilever support 6 is 1.0m, and the layer spacing meets the requirements of relevant regulations. In general, the net spacing of power cables is 460mm, and the net spacing of communication cable support layers is 360mm; one water supply pipe or raw water pipe of DN200～DN600 is arranged under the power cable and communication cable respectively.

Best practice:

This embodiment takes the double-cabin four-side arrangement structure as an example. The double-cabin double-side arrangement components can be understood as a reference, that is, only the cantilever bracket arranged on the middle partition needs to be removed, and the transverse dimension can be shortened. The double pier can also be changed to a single pier. pier.

Referring to the accompanying drawing 3, the double-cabin four-side overhead integrated wiring pipe gallery includes supporting columns 1 and the integrated pipe gallery. Along the direction of the integrated pipe gallery, a supporting column is arranged at intervals of 8-10m. The support column 1 is a double-pier column, using steel pipes with equal wall thickness, the specification can be Φ325/12~Φ609/14, and it is anti-corrosion by hot-dip galvanizing. The overhead height is 2.0m-8.0m. The distance is 4.0m, and the cross bracing is used to meet the requirements of lateral stability. One end of the support column 1 is supported and installed on the ground foundation 9 or the support surface, and the other end surface is a support platform 8 connected with the pipe gallery section. When the local foundation soil is cohesive soil or other strata that can be used as the bearing layer of the foundation, the foundation adopts an independent plate type pillar foundation; The support of double piers and columns is adopted, so the joint foundation is adopted to improve the integrity of the pipe gallery structure. The support column 1 is a prefabricated component. After the ground foundation is poured, the support column 1 can be directly connected and installed on site. Rigid joints are used to connect between the column and the foundation, and between the support platform on the upper end of the column and the pipe gallery on the top.

The comprehensive pipe gallery includes multiple pipe gallery sections, each pipe gallery section includes a side wall 2, a top cover 3, a bottom plate 4 and a middle partition 5, and the side wall 2 includes left and right side walls, standing vertically on the bottom plate 4 It is located between the top cover 3 and the bottom plate 4 on both sides of the top cover 3 and the bottom plate 4. The top cover 3 is made of profiled steel plate roof, and the longitudinal direction is supported by H200X200 I-beam and purlin respectively. The color steel plate is required to have heat insulation function; in the cross section The top is a herringbone structure, which is convenient for rainproof and drainage. The bottom plate 4 is fixedly connected with the support platform 8 on the upper end surface of the support column 1, and reinforcement ribs can be added to assist in fixing. The middle partition 5 is located in the middle of the space between the left and right side walls. , are distributed parallel to the left and right side walls in space, and the space formed by the side wall 2, the top cover 3 and the bottom plate 4 is divided into two left and right cabins. A plurality of cantilever supports 6 capable of erecting various pipelines are installed on the left and right side walls and both sides of the middle partition. The plurality of cantilever supports 6 are arranged in layers from top to bottom, and each cabin body The space in the middle of the cantilever support is the maintenance walkway 7; the cantilever support is made of metal, without diagonal braces, so as to ensure the layer spacing of the cable support to the greatest extent. The internal net space size of each cabin of the pipe gallery is: 3.0m wide x 2.8m high, and a maintenance channel is set in the middle of the cabin, and the net size of the channel is: 1.0m wide x 1.9m high.

The pipe gallery section is a prefabricated steel component. After the on-site foundation is poured, the on-site installation and splicing are carried out, and the opening faces of the front and rear pipe gallery sections are connected to form an overall integrated pipe gallery. Frame system (refer to attached drawing 2). One of the double compartments of the comprehensive utility gallery can arrange 6 circuits of 35kV/10kV medium voltage cables A and two water supply pipes F, and the other compartment can arrange 3 circuits of 10kV and below cables B, several circuits of communication cables C and medium voltage cables. Water pipe D; the support length of cantilever support 6 is 1.0m, and the layer spacing meets the requirements of relevant regulations. Generally, the net spacing of power cables is 460mm, and the net spacing of communication cable support layers is 360mm; Arrange a DN200～DN600 water supply pipe or raw water pipe.

According to the existing construction experience data, taking the scale of the pipe gallery proposed by the present invention as an analogy, and using traditional construction techniques, the comprehensive cost of the single-cabin pipe gallery is between 25,000/m and 30,000/m, and the comprehensive cost of the double-cabin pipe gallery The cost is between 35,000/m and 40,000/m. Moreover, the construction period of the underground comprehensive pipe gallery is relatively long. The construction period of a conventional project exceeding 1.0km is more than 9 months, and the civil engineering process is complicated, with many hidden projects and difficult construction.

The double-pier supported comprehensive pipe gallery proposed by this technical scheme adopts factory prefabrication except that the foundation is cast-in-place. Between 80,000/m and 12,000/m, the cost of the theme linear meter of the double cabin pipe gallery is between 15,000/m and 20,000/m, which is less than 50% of the traditional pipe gallery, and the economic benefits are very obvious. At the same time, since the main components are all prefabricated in factories, the on-site construction period is short. From the foundation excavation to the completion of the pipe gallery structure, regardless of weather factors, the overall construction period of the pipe gallery project exceeding 1.0km does not exceed 2 months. The construction period is shortened significantly, and the social benefits are also very obvious.

In the present invention, according to the requirements of laying pipelines, the cross-sectional form of the corridor in the air can adopt a single-cabin, double-cabin or even extend to a multi-cabin cross-sectional structural form, and each cabin is provided with a 1.0m wide × 1.9m high maintenance walkway. All kinds of pipelines are arranged on one side or both sides of the corridor; the internal pipelines of the pipe gallery are classified and arranged, and the upper part of each side can be respectively arranged with power cables and communication cables, and the inner space of the water supply pipes can be arranged reasonably at the lower part of both sides. All kinds of cables and communication cables in the pipe gallery adopt cantilever brackets without diagonal braces to ensure the layer spacing of cable brackets to the maximum extent. The horizontal structure of the pipe gallery is supported by single piers (columns) and double piers (columns). connect node.

The advantages of the present invention are:

1. Small project investment: the investment of the underground pipe gallery with the same laying scale is about 25-40 million/km, while the investment of the pipe gallery constructed by the present invention is about 8-20 million/km.

2. Short construction period: Calculated from the enclosure of the underground pipe gallery, the period for two construction sections to be completed at the same time may take more than 9 months, while the construction period of the site using the present invention is only 1 to 2 months.

3. Small construction risk: The construction of underground pipe gallery is a complex underground project. The construction of the project is obviously affected by the geological conditions of the stratum and the surrounding environmental conditions, and construction accidents are common; It works on the ground, without hidden projects, small hoisting machinery, easy structure splicing construction, and low construction risk.

The parts not described in the present invention are the same as the prior art.

Claims (10)

1. overhead type comprehensive wiring piping lane, it is characterised in that include support post and pipe gallery, pipe gallery includes Multigroup piping lane section, every group of piping lane Duan Jun include side wall, top cover and bottom plate, and side wall includes arranged on left and right sides wall, and the two stands on respectively On two sides of bottom plate, between top cover and bottom plate, top cover is in chevron shaped construction；Multiple can set up respectively is installed in side wall The cantilever support of kind pipeline, the cantilever support spatially extended suspension into cabin, the support of support post one end are arranged on In ground base or supporting surface, the bottom plate of the upper surface connection piping lane section of the other end, the piping lane section and support post are Prefabricated steel member, after ground base pours at the scene, the prefabricated steel member of piping lane section carries out in-site installation splicing, by front and rear piping lane section Opening surface be attached, it is final to form whole synthesis piping lane.

2. overhead type comprehensive wiring piping lane according to claim 1, it is characterised in that piping lane Duan Weidan shipping bills side formula cloth Put, cantilever support is arranged in one of left side wall and right side wall side wall, and relative opposite side space is catwalk.

3. overhead type comprehensive wiring piping lane according to claim 1, it is characterised in that piping lane Duan Weidan cabins bilateral formula cloth Put, cantilever support is separately mounted on left side wall and right side wall, is catwalk among the cantilever support of both sides.

4. overhead type comprehensive wiring piping lane according to claim 1, it is characterised in that piping lane Duan Weishuan cabins bilateral formula structure Make, separate between left side wall and right side wall among setting, space is divided into two nacelles in left and right, multiple cantilevereds by centre cut-off Support is separately mounted on left side wall and right side wall, and catwalk is arranged to close to the space of middle cut-off in each nacelle.

5. overhead type comprehensive wiring piping lane according to claim 1, it is characterised in that the side formula structure of piping lane Duan Weishuan cabins four Make, separate between left side wall and right side wall among setting, space is divided into two nacelles in left and right, left side wall, the right side by centre cut-off It is distributed with cantilever support on two sides of side wall and middle cut-off, there is cantilevered the both sides in so each nacelle Support, the space among the cantilever support of both sides is catwalk.

6. overhead type comprehensive wiring piping lane according to claim 1, it is characterised in that it is flat also to include a kind of support Platform, it is located between support post and piping lane section bottom plate, and bottom surface connection support post, top surface is used to put and connect piping lane section bottom Plate.

7. overhead type comprehensive wiring piping lane according to claim 1, it is characterised in that the support post is double Pier column, or be single pier column, when being double pier columns, right-angled intersection support connection between two columns.

8. overhead type comprehensive wiring piping lane according to claim 1, it is characterised in that the support post basis or Person is independent board-like footing of a pillar, or is pile foundation brace foundation.

9. overhead type comprehensive wiring piping lane according to claim 1, it is characterised in that the wall such as described support post use Thick steel pipe, is galvanizing anticorrosive coat on steel pipe, and upper end and piping lane section back plate connections set stiffener plate, and stiffener plate is vertical It is distributed in the lower surface of piping lane section bottom plate and along the ring week of steel pipe.

10. overhead type comprehensive wiring piping lane according to claim 1, it is characterised in that two inner sides of piping lane section are set There is the shutter of pass-through type, bottom plate is paved into using Turbogrid plates；Piping lane section full steel structure precast assembly, side wall on longitudinal direction is using spreading out Frame structure.