CN115149487A - Assembled RPC cable pit - Google Patents
Assembled RPC cable pit Download PDFInfo
- Publication number
- CN115149487A CN115149487A CN202211002516.0A CN202211002516A CN115149487A CN 115149487 A CN115149487 A CN 115149487A CN 202211002516 A CN202211002516 A CN 202211002516A CN 115149487 A CN115149487 A CN 115149487A
- Authority
- CN
- China
- Prior art keywords
- cable
- wall
- cable trench
- bottom plate
- cable pit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004567 concrete Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 13
- 238000005452 bending Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
In order to solve the problems of heavy weight, low strength, low construction efficiency and the like of a cable trench, the invention provides an assembly type RPC cable trench, which comprises a cable trench wall and a cable trench bottom plate, wherein the cable trench wall is in a herringbone structure, a plurality of groups of wall columns are arranged on the outer side surface of the cable trench wall along the length direction, the wall columns extend to the bottom end of the cable trench wall from top to bottom along the height direction of the cable trench wall, a cable support is arranged on the inner side surface of the cable trench wall, drainage grooves distributed along the length direction are arranged on the upper end surface of the cable trench bottom plate, in addition, threaded holes distributed correspondingly in position are arranged on the cable trench wall and the cable trench bottom plate, the cable trench bottom plate is detachably connected between the two groups of cable trench walls through connecting bolts, the integral device adopts an assembly type structure, the wall columns are arranged on the outer side of the cable trench wall, the stress mode of the cable trench component is changed, the maximum bending moment of the cable trench component is greatly reduced, the thickness of the trench wall and the bottom plate is reduced, the material consumption and the weight are reduced, and the construction efficiency is improved.
Description
Technical Field
The invention relates to the technical field of cable trench construction, in particular to an assembly type RPC cable trench.
Background
The cable trench is a basic facility in the construction of power engineering of power plants, transformer substations and the like, the currently commonly used cable trench is divided into a cast-in-place construction and a prefabricated assembly type cable trench, the cast-in-place cable trench has the problems of long construction period on site, poor construction quality on site, difficulty in mounting equipment supports and the like, meanwhile, the cast-in-place construction has great influence on the surrounding environment, great influence on construction seasons and the like, the national grid company requires the development of power construction towards resource saving, environment friendliness and industrialization, the prefabricated assembly type cable trench replaces the cast-in-place cable trench to become the trend of industrial development, the assembly type cable trench can better realize industrial production and standardized construction, the material of the existing assembly type cable trench is mainly common concrete or high-performance concrete materials, and the concrete materials have low strength, so that the section size of a component is large, the corresponding prefabricated cable trench has large weight and is not convenient to mount and construct.
Disclosure of Invention
In order to solve the problems, the invention provides an assembly type RPC cable trench, which adopts the following technical scheme:
the utility model provides an assembled RPC cable pit, a serial communication port, includes cable pit wall, cable pit bottom plate, cable pit wall is the style of calligraphy structure of adding the letter in the seam, and cable pit wall lateral surface is provided with the multiunit wall post along length direction, the wall post extends to cable pit wall bottom along cable pit wall direction of height top-down, is provided with the cable support on the cable pit wall medial surface, be provided with the water drainage tank that distributes along length direction on the cable pit bottom plate up end, in addition, be provided with the screw hole that the position corresponds the distribution on cable pit wall and the cable pit bottom plate, pass through connecting bolt fixed connection between cable pit bottom plate and the cable pit wall.
The cable trench component adopts the split type installation of the form that the trench wall and the bottom plate can be dismantled and connected, effectively improves the efficiency of construction, sets up the wall post at cable trench wall lateral surface in addition, changes the atress mode of cable trench wall, disperses the power of perpendicular to trench wall direction through the wall post to the direction that is on a parallel with the trench wall, has effectively reduced the biggest moment of flexure of cable trench component to can reduce cable trench wall and cable trench bottom plate thickness.
Preferably, the cable trench wall and the cable trench bottom plate are both prefabricated by RPC concrete.
The high-strength RPC concrete can effectively improve the strength of the cable trench component, reduce the weight of the cable trench component and facilitate transportation and installation.
Preferably, the upper end of the side wall of the cable trench is provided with a cover plate bayonet.
The cover plate can be conveniently installed on the upper end of the wall of the cable trench through the cover plate bayonet.
The invention has the beneficial effects that:
compared with the traditional cable trench cantilever stress mode, the device forms a simply supported stress structure by adding wall columns on the cable trench wall, part of force perpendicular to the direction of the cable trench wall is dispersed to the direction parallel to the direction of the cable trench wall, and the maximum bending moment on the cable trench can be reduced to about one third of the cantilever component.
Drawings
FIG. 1 is a front view of the structure of the present invention
FIG. 2 is a perspective view of the structure of the present invention
FIG. 3 is a schematic view of the stress of the conventional cable trench
FIG. 4 is a schematic view of the structure of the present invention
Wherein: 1-cable trench wall, 2-cable trench bottom plate, 3-wall column, 4-cable support, 5-cover plate bayonet, 6-drainage groove, 7-threaded hole and 8-connecting bolt.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of describing the invention, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, are not to be construed as limiting the invention.
Assembled RPC cable pit as shown in fig. 1-2, including two sets of cable pit walls 1, overlap joint cable pit bottom plate 2 between two sets of cable pit walls 1, the transversal style of calligraphy structure of personally submitting the line of cable pit wall 1, comprises longitudinal plate and the diaphragm of fixed connection in longitudinal plate below, fixedly connected with cable support 4 on the longitudinal plate medial surface of cable pit wall 1, fixedly connected with multiunit wall post 3 on the lateral surface, wall post 3 distributes along cable pit wall 1 longitudinal plate lateral surface and diaphragm up end, and the up end middle part of cable pit bottom plate 2 is provided with water drainage tank 6, and water drainage tank 6 distributes along the length direction of cable pit bottom plate 2, is provided with the corresponding distribution of position on the left and right sides of cable pit bottom plate 2 and the diaphragm of cable pit wall 1 and runs through screw hole 7 back-fixing of distribution from top to bottom, passes screw hole 7 after-fixing through connecting bolt 8 between cable pit bottom plate 2 and the cable pit wall 1, still is provided with bayonet socket 5 in the upper end of cable pit wall 1, and easy to assemble apron.
The sizes of the cable trench wall 1 and the cable trench bottom plate 2 are determined according to the designed cross-sectional size of the cable trench component, the cable trench wall 1 and the cable trench bottom plate 2 are both prefabricated by RPC concrete, when the cable trench is installed on site, adjacent cable trench components are sequentially spliced, and a water stop strip is arranged at the joint for water prevention.
Fig. 3 is a conventional cable trench cantilever, the bottom end of the trench wall is a fixed end, the upper end is a free end, fig. 4 is a stress diagram of the device, the wall column 3 is used as the support of the cable trench wall 1, and due to the assembly structure, the constraint contribution of the bottom end of the cable trench wall 1 on the cable trench bottom plate 2 is not considered, so that the stress mode of the cable trench wall 1 of the device is a plate member supported by two opposite sides.
For the convenience of comparison, the depth h =1.3m of the cable trench and the length L =2.0m of the segmented prefabricated segment are set according to the actual engineering requirements, and the loads borne by the cable support are not considered in the two cases.
The calculation of the two cable trench structures is schematically illustrated in fig. 3 and 4 below, and the maximum values q of the distributed loads applied to the bottom ends of the trench walls are the same, and the calculation is performed according to the structural mechanics and building structure static force calculation manual (second edition, architecture industry press, 1998).
The maximum bending moment M of the bottom of the cable trench wall can be obtained from the figure 3 1max = qh 2 /6 ；
For FIG. 4, the elastic theory is calculated from the structural static force calculation handbook (P.231, tables 4-34) as follows: h/L =1.3/2.0=0.65, look-up table 4-34, and obtain coefficient α =0.0533, so M 2max =0.0533qh 2 ；
Comparison M 1max And M 2max It can be known that M 1max Is M 2max 3.12 times of the maximum bending moment of the cable trench of the device, namely, the maximum bending moment of the cable trench of the device is about one third of the maximum bending moment of the traditional cantilever member, so that the influence of the load of a cable trench bottom plate and a cable bracket is comprehensively considered, and about half of materials are saved compared with the existing cast-in-place structure under the condition that the structural requirement is not reduced.
This device changes cable pit overall structure's atress mode through increasing wall post 3 for the maximum moment of flexure of cable pit component is showing and is reducing, thereby reduces ditch wall and bottom plate wall thickness, with reduce the concrete volume, alleviates overall member weight, improves the efficiency of construction of cable pit component.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications can be made without departing from the principles of the invention and these modifications are to be considered within the scope of the invention.
Claims (3)
1. The utility model provides an assembled RPC cable pit, a serial communication port, includes cable pit wall, cable pit bottom plate, cable pit wall is the style of calligraphy structure of adding the letter in the seam, and cable pit wall lateral surface is provided with the multiunit wall post along length direction, the wall post extends to cable pit wall bottom along cable pit wall direction of height top-down, is provided with the cable support on the cable pit wall medial surface, be provided with the water drainage tank that distributes along length direction on the cable pit bottom plate up end, in addition, be provided with the screw hole that the position corresponds the distribution on cable pit wall and the cable pit bottom plate, pass through connecting bolt fixed connection between cable pit bottom plate and the cable pit wall.
2. The fabricated RPC cable trench of claim 1, wherein the trench walls and the trench floor are prefabricated from RPC concrete.
3. The assembled RPC cable trench of claim 1, wherein the upper end of the sidewall of the cable trench is provided with a cover plate bayonet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211002516.0A CN115149487A (en) | 2022-08-22 | 2022-08-22 | Assembled RPC cable pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211002516.0A CN115149487A (en) | 2022-08-22 | 2022-08-22 | Assembled RPC cable pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115149487A true CN115149487A (en) | 2022-10-04 |
Family
ID=83416086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211002516.0A Pending CN115149487A (en) | 2022-08-22 | 2022-08-22 | Assembled RPC cable pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115149487A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203617638U (en) * | 2013-12-13 | 2014-05-28 | 镇江市泰昌电器设备有限公司 | Combined flame retardant plastic alloy cable bridge |
| CN206611154U (en) * | 2017-03-30 | 2017-11-03 | 广州电力设计院 | Assembly type cable slot |
| CN108963906A (en) * | 2018-10-06 | 2018-12-07 | 东台市飞凌电气设备有限公司 | A kind of large span aluminum cable tray |
| CN110011241A (en) * | 2019-04-22 | 2019-07-12 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of cable trough for railway bed |
| CN111463738A (en) * | 2020-06-01 | 2020-07-28 | 合肥智瑞工程科技有限公司 | Cable trench structure based on assembled |
| CN111769508A (en) * | 2020-07-08 | 2020-10-13 | 国网江苏省电力有限公司连云港供电分公司 | Assembled cable trench and construction method thereof |
| CN213185443U (en) * | 2020-08-18 | 2021-05-11 | 四川华西安装工程有限公司 | Mute cable trench |
| CN215772396U (en) * | 2021-07-28 | 2022-02-08 | 扬中市宏光防爆电器有限公司 | Anti-winding explosion-proof threading box |
| CN216981488U (en) * | 2022-04-02 | 2022-07-15 | 国网四川电力送变电建设有限公司 | Prefabricated assembled cable pit of shaping |
-
2022
- 2022-08-22 CN CN202211002516.0A patent/CN115149487A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203617638U (en) * | 2013-12-13 | 2014-05-28 | 镇江市泰昌电器设备有限公司 | Combined flame retardant plastic alloy cable bridge |
| CN206611154U (en) * | 2017-03-30 | 2017-11-03 | 广州电力设计院 | Assembly type cable slot |
| CN108963906A (en) * | 2018-10-06 | 2018-12-07 | 东台市飞凌电气设备有限公司 | A kind of large span aluminum cable tray |
| CN110011241A (en) * | 2019-04-22 | 2019-07-12 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of cable trough for railway bed |
| CN111463738A (en) * | 2020-06-01 | 2020-07-28 | 合肥智瑞工程科技有限公司 | Cable trench structure based on assembled |
| CN111769508A (en) * | 2020-07-08 | 2020-10-13 | 国网江苏省电力有限公司连云港供电分公司 | Assembled cable trench and construction method thereof |
| CN213185443U (en) * | 2020-08-18 | 2021-05-11 | 四川华西安装工程有限公司 | Mute cable trench |
| CN215772396U (en) * | 2021-07-28 | 2022-02-08 | 扬中市宏光防爆电器有限公司 | Anti-winding explosion-proof threading box |
| CN216981488U (en) * | 2022-04-02 | 2022-07-15 | 国网四川电力送变电建设有限公司 | Prefabricated assembled cable pit of shaping |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20221004 |
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| WD01 | Invention patent application deemed withdrawn after publication |