CN114825241A - Simple installation device and construction method for side wall embedded part of fair-faced concrete cable trench - Google Patents
Simple installation device and construction method for side wall embedded part of fair-faced concrete cable trench Download PDFInfo
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- CN114825241A CN114825241A CN202210615289.2A CN202210615289A CN114825241A CN 114825241 A CN114825241 A CN 114825241A CN 202210615289 A CN202210615289 A CN 202210615289A CN 114825241 A CN114825241 A CN 114825241A
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- side wall
- end plate
- cable trench
- embedded part
- embedded
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- 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
- H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
Abstract
The invention discloses a simple installation device and a construction method for side wall embedded parts of a fair-faced concrete cable trench. Firstly, finishing binding reinforcing steel bars of a bottom plate and a side wall of a cable trench, then embedding an integrated embedded part on the reinforcing steel bars of the side wall, and laying templates on the bottom plate and the side wall of the cable trench after the embedded part is embedded. According to the invention, the integral embedded part is tensioned and fixed by adopting a tensioning fastener by utilizing a prestress principle, so that the integral embedded part does not deviate in the pouring process; thereby make integral type built-in fitting installation level and smooth, the location accurate, demolish the one shot forming's behind the template characteristics, further realize cable pit clear water and pour the technology, and can make full use of site operation utensil, not only aesthetic measure is higher, and the operation installation is simpler and easier moreover, improves efficiency of construction, material saving and cost of labor by a wide margin.
Description
Technical Field
The invention relates to the technical field of cable laying of transformer substations, in particular to a simple installation device and a construction method for side wall embedded parts of a bare concrete cable trench.
Background
In the existing power transmission and transformation engineering, a cable trench structure in a transformer substation is a structure which is widely and essentially used, and is mainly used for laying cables. The fair-faced concrete structure is a cast-in-place concrete structure, the wall surface is smooth and flat after the template is dismantled, and the fair-faced concrete structure can be used without plastering the surface. The embedded part is composed of a steel plate and an anchoring steel bar, the embedded part is connected with a cast-in-place concrete structure through the anchoring steel bar, and the embedded part is connected with other steel parts such as a cable support through an embedded part steel plate. In the construction of the cable trench, an expansion joint is usually arranged at intervals of 15-20 m in the cable trench, the width of the expansion joint is about 10-20 mm, and a section of cable trench with a length of 15-20 m is referred to as a cable trench section hereinafter.
At present, most of cable trenches in transformer substations are still mainly of cast-in-place concrete structures, and embedded parts on the side walls of cast-in-place concrete cable trenches are fixed on reinforcing steel bars on the side walls of the cable trenches after side wall templates are installed and before concrete is poured. After concrete is poured, because the surface of the embedded part and the template surface of the side wall cannot be tightly attached, after the template is usually removed, the embedded part deviates along with reinforcing steel bars with weak rigidity in the concrete pouring vibrating process due to the dynamic action of the poured concrete, the fluidity of the concrete and the like, so that the surface of the embedded part of the side wall is immersed in the concrete, and the embedded part exposed out of the surface of the side wall is uneven and rotates around the center of the embedded part. When a cable support is welded and installed by constructors, the positions of embedded parts immersed in the side walls of the cable trench need to be found, and the concrete side walls are exposed by knocking the concrete side walls with a small hammer, so that the side walls are not smooth and have uneven surfaces, even pits and the like, the appearance is not attractive, the workload of workers is increased, and the construction progress is influenced.
The person skilled in the art is dedicated to solving the above technical drawbacks.
Disclosure of Invention
In view of the defects in the prior art, the technical purpose of the invention is to solve the problems that the surface of an embedded part cannot be attached to a side wall template due to the fact that most of cable ducts in the existing transformer substation are still mainly of a cast-in-place concrete structure, and further the embedded part exposed out of the surface of the side wall is uneven, the surface of the embedded part rotates around the center of the embedded part, and the construction progress is influenced.
In order to achieve the technical purpose, the invention provides a simple installation device for side wall embedded parts of a fresh water concrete cable trench, which comprises a counterforce support, wherein a plurality of pairs of adjustable end plates are correspondingly arranged at two ends of the counterforce support, tensioning fasteners are respectively arranged at two ends of each adjustable end plate, and each tensioning fastener is connected with one end of an integrated embedded part embedded in the side wall of the cable trench.
Preferably, the counter-force support is a support with a cuboid structure formed by connecting and combining a plurality of cross rods and upright rods.
Preferably, the adjustable end plate is connected with an end upright of the counter force bracket through an end plate fastener, and the adjustable end plate has a longitudinal adjusting function.
Preferably, an end plate fastening hole is reserved in the adjustable end plate, the end plate fastening piece is of a U-shaped structure, and the end plate fastening piece wraps the two ends of the end vertical rod of the counter-force support and penetrates out of the end plate fastening hole to be fixed through nuts.
Preferably, a tensioning fastening hole is reserved in the adjustable end plate, a hanging hole is reserved in the end portion of the integrated embedded part, one end of the tensioning fastening piece is of a hook structure and is hung in the hanging hole, and the other end of the tensioning fastening piece is of a screw structure, penetrates out of the tensioning fastening hole and is fixed through a nut.
Preferably, one integral type embedded part is a full-length embedded part which is full-length with the side wall of the cable trench.
Preferably, one integrated embedded part is composed of a plurality of block type embedded parts and one fixing rib, and the plurality of block type embedded parts are arranged along the length direction of the side wall of the cable groove and are connected into a whole through one fixing rib.
The invention also provides a construction method of the simple installation device for the side wall embedded part of the fair-faced concrete cable trench, which comprises the following steps:
firstly, binding reinforcing steel bars of a bottom plate and a side wall of a cable trench, then embedding an integrated embedded part on the reinforcing steel bars of the side wall, and laying templates on the bottom plate and the side wall of the cable trench after the embedded part is embedded;
secondly, mounting a counter-force support, wherein the upright posts at the two end parts of the counter-force support are correspondingly provided with adjustable end plates and fixed through end plate fixing pieces;
thirdly, adjusting the height of the adjustable end plate to be consistent with the height of the corresponding pair of integrated embedded parts, keeping the stress directions of the tensioning fasteners, the hanging holes of the integrated embedded parts and the tensioning fastening holes of the adjustable end plate to be consistent, installing the tensioning fasteners one by one and screwing nuts on the tensioning fasteners;
and fourthly, pouring concrete in the formwork, and gradually removing the tensioning fastening piece, the adjustable end plate, the counter-force support and the formwork after the concrete is poured and reaches the design strength.
Preferably, in the third step, the integrated embedded part is tightened and tightly attached to the side surface of the template, and the nut on the tensioning fastener is tightened.
Preferably, in the fourth step, the concrete is fair-faced concrete.
Preferably, after the fourth step is completed, erecting a cable support on the integrated embedded part, and then completing the laying of the cable on the cable support.
The invention has the beneficial effects that:
due to the design, the integral embedded part is tensioned and fixed by the tensioning fastener by utilizing the prestress principle, so that the integral embedded part is not deviated in the pouring process, and the surface of the integral embedded part is ensured to be tightly attached to the template surface of the side wall; thereby make integral type built-in fitting installation level and smooth, the location accurate, demolish the one shot forming's behind the template characteristics, further realize cable pit clear water and pour the technology, and can make full use of site operation utensil, not only aesthetic measure is higher, and the operation installation is simpler and easier moreover, improves efficiency of construction, material saving and cost of labor by a wide margin.
In conclusion, compared with the prior art, the construction method is easy to install and operate, fully utilizes tools and tools on a construction site, saves the construction period and reduces the labor cost and the material cost.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic plan view of an end portion of a reaction force bracket according to the present invention;
FIG. 3 is a perspective view of a reaction force bracket portion according to the present invention;
FIG. 4 is a schematic structural view of an adjustable end plate, tension fasteners and end plate fasteners of the present invention;
FIG. 5 is a schematic view of the construction of the adjustable end plate, tension fasteners and end plate fasteners of the present invention;
FIG. 6 is a schematic structural view of a block-type embedded part adopted by the embedded part of the invention;
FIG. 7 is a schematic view of a block-type embedded part connected by a fixing rib according to the present invention;
FIG. 8 is a schematic structural view of the embedded part of the present invention using a through-length embedded part;
FIG. 9 is a schematic structural view of cast-in-place concrete, through-length embedded parts and a pouring template according to the invention.
In the figure: the concrete formwork comprises 1 concrete, 2 block type embedded parts, 3 full-length embedded parts, 3a formworks, 4 counter-force supports, 5 adjustable end plates, 6 tensioning fasteners, 7 end plate fasteners and 8 fixing ribs.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Example (b):
as shown in fig. 1-9, a simple installation device for side wall embedded parts of a fresh water concrete cable trench comprises a counterforce support 4, wherein a plurality of pairs of adjustable end plates 5 are correspondingly arranged at two ends of the counterforce support 4, tensioning fasteners 6 are respectively arranged at two ends of each adjustable end plate 5, and each tensioning fastener 6 is connected with one end of an integrated embedded part embedded in a side wall of the cable trench.
Specifically, the integral embedded part is a full-length embedded part 3, the counterforce support 4 is an independent stable support body, the adjustable end plates 5 are arranged at two end parts of the counterforce support, and the adjustable end plates 5 can move up and down through the end plate fasteners 7 so as to adapt to the installation of the integral embedded parts at different positions on the side wall of the cable trench; two ends of the adjustable end plate 5 are provided with tensioning fastening holes for penetrating the tensioning fastening pieces 6; the tensioning fastener 6 is connected with the reserved hanging hole at the end of the integrated embedded part and penetrates through the tensioning fastening hole of the adjustable end plate 5; through waiting to build the fastening of 6 tip nuts of cable trench section (15 ~ 20m) both ends stretch-draw fastener to provide the counter-force through the counter-force support 4 and the adjustable end plate 5 of stabilizing the support body, make integral type built-in fitting by the tensioning and with template 3a surface laminating.
Specifically, to the integral type built-in fitting by a plurality of block formula built-in fittings 2 and a fixed muscle 8 constitute, counter-force support 4, adjustable end plate 5, stretch-draw fastener 6, end plate fastener 7 effect are the same with logical long built-in fitting 3 installation process, fixed muscle 8 sets up two usually for each block formula built-in fitting 2 integration together of evenly distributed on the cable trench section, form similar logical long built-in fitting 3, the whole stretch-draw of being convenient for all block formula built-in fittings 2 and template 3a face laminating.
Specifically, the adjustable end plate 5 is a steel plate with a certain thickness, and because two ends of the adjustable end plate are overhanging members relative to the counter-force support 4, in order to prevent the adjustable end plate 5 from deforming in the tensioning process, the adjustable end plate 5 needs to have a certain thickness so as to provide a larger tensioning force, so that the integrated embedded part is tensioned and attached to the surface of the template 3 a; an end plate fastening hole is reserved in the adjustable end plate 5, the end plate fastening piece 7 is of a U-shaped structure, and two ends of the end vertical rod of the end plate fastening piece 7 wrapping the counter-force support 4 penetrate out of the end plate fastening hole and are fixed through nuts.
Specifically, a tensioning fastening hole is reserved in the adjustable end plate 5, a hanging hole is reserved in the end portion of the integrated embedded part, one end of a tensioning fastening piece 6 is of a hook structure and is hung in the hanging hole, the other end of the tensioning fastening piece 6 is of a screw rod structure, penetrates through the tensioning fastening hole and is fixed through a nut, the tensioning fastening piece 6 is a connecting piece with certain rigidity, one end of the connecting piece is an openable ring and is connected with the hanging hole reserved in the integrated embedded part, a screw rod is arranged at one end of the connecting piece, and the screw rod can penetrate through the tensioning fastening holes in the two ends of the adjustable end plate 5 and is screwed through a nut; the tensioning fastener 6, the integrated embedded part and the end hole of the adjustable end plate 5 need to be in the same stress direction, so that the integrated embedded part is prevented from overturning when the integrated embedded part is tensioned.
Specifically, the fixed rib 8 is formed by adopting a threaded steel bar with a diameter of 8-10 and the like and a smaller diameter, is connected with each block type embedded part 2 in a spot welding manner, the end part of the fixed rib 8 is provided with a thread, two tensioning fixing holes are reserved in the end part of the adjustable end plate 5, and a sleeve for mechanically connecting the steel bars and the thread of the steel bars penetrating the adjustable end plate 5 are connected and fastened.
The invention discloses a construction method of a simple installation device for side wall embedded parts of a clear water concrete cable trench, which comprises the following steps:
firstly, binding reinforcing steel bars of a bottom plate and a side wall of a cable trench, then embedding an integrated embedded part on the reinforcing steel bars of the side wall, and laying a template 3a on the bottom plate and the side wall of the cable trench after the embedded part is embedded;
secondly, mounting a counter-force support 4, and connecting the steel pipe and a fastener for a scaffold on a construction site; a cushion block is arranged at the contact position of the vertical steel pipe of the counter-force bracket 4 and the bottom plate of the cable trench; according to the horizontal row number and position of the side wall of the cable trench, adjustable end plates 5 with end plate fastening holes and tensioning fastening holes are correspondingly installed on upright rods at two end parts of the counterforce support 4, and the adjustable end plates 5 are fixed through end plate fixing pieces 7;
thirdly, loosening the nuts on the end plate fixing parts 7, adjusting the height of the adjustable end plates 5 up and down, screwing the nuts when the heights of the adjustable end plates 5 are consistent with those of the corresponding integrated embedded parts, namely adjusting the heights of the adjustable end plates 5 to be consistent with those of the corresponding integrated embedded parts, and then installing the tensioning fasteners 6 one by one and screwing the nuts on the tensioning fasteners 6;
and step four, finally, pouring concrete 1 in the template 3a, and gradually removing the tensioning fastening piece 6, the adjustable end plate 5, the counter-force support 4 and the template 3a after the concrete 1 is poured and reaches the designed strength.
Specifically, in the third step, the integrated embedded part is tightened and tightly attached to the side surface of the template 3a, and the nut on the tensioning fastener 6 is tightened.
Specifically, in the fourth step, the concrete 1 is fair-faced concrete.
Specifically, after the fourth step is completed, a cable support is erected on the integrated embedded part, and then the cable is laid on the cable support.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The utility model provides a simple and easy installation device of clear water concrete cable trench side wall embedded part, includes reaction support (4), its characterized in that, the both ends correspondence of reaction support (4) is provided with a plurality ofly to adjustable end plate (5), every the both ends of adjustable end plate (5) are provided with stretch-draw fastener (6) respectively, every stretch-draw fastener (6) link to each other with the one end of an embedded integral type embedded part of pre-buried in cable trench side wall.
2. The simple mounting device for the side wall embedded part of the fresh water concrete cable channel according to claim 1, wherein the counterforce support (4) is a support of a cuboid structure formed by connecting and combining a plurality of cross rods and vertical rods.
3. The easy installation device for side wall embedded parts of a fresh water concrete cable trench according to claim 1, characterized in that the adjustable end plate (5) is connected with the end vertical rod of the counterforce bracket (4) through an end plate fastener (7), and the adjustable end plate (5) has a longitudinal adjustment function.
4. The simple mounting device for the side wall embedded part of the fair-faced concrete cable trench is characterized in that an end plate fastening hole is reserved in the adjustable end plate (5), the end plate fastening piece (7) is of a U-shaped structure, and the two ends of an end vertical rod wrapping the counterforce support (4) through the end plate fastening hole are wrapped by the end plate fastening piece (7) and fixed through nuts.
5. The easy installation device for the side wall embedded parts of the fair-faced concrete cable trench according to claim 1, wherein a tensioning fastening hole is reserved in the adjustable end plate (5), a hanging hole is reserved in the end part of the integrated embedded part, one end of the tensioning fastening part (6) is of a hook structure and is hung in the hanging hole, and the other end of the tensioning fastening part (6) is of a screw structure, penetrates through the tensioning fastening hole and is fixed through a nut.
6. The easy installation device for side wall embedded parts of a fresh water concrete cable trench according to claim 1, wherein one integrated embedded part is a through-length embedded part (3) which is through-long with the side wall of the cable trench.
7. The easy installation device for side wall embedded parts of the fair-faced concrete cable trench according to claim 1, wherein one integral embedded part is composed of a plurality of block type embedded parts (2) and a fixing rib (8), and the plurality of block type embedded parts (2) are arranged along the length direction of the side wall of the cable trench and are connected into a whole through the fixing rib (8).
8. A construction method of a simple installation device for side wall embedded parts of a fresh water concrete cable channel comprises the following steps:
firstly, binding reinforcing steel bars of a bottom plate and a side wall of a cable trench, then embedding an integrated embedded part on the reinforcing steel bars of the side wall, and laying a template (3a) on the bottom plate and the side wall of the cable trench after the embedded part is embedded;
secondly, installing a reaction support (4), and correspondingly installing adjustable end plates (5) on upright rods at two end parts of the reaction support (4) and fixing the adjustable end plates through end plate fixing pieces (7);
thirdly, adjusting the height of the adjustable end plate (5) to be consistent with the height of the corresponding pair of integrated embedded parts, keeping the stress directions of the tensioning fasteners (6), the hanging holes of the integrated embedded parts and the tensioning fastening holes of the adjustable end plate (5) consistent, installing the tensioning fasteners (6) one by one and screwing nuts on the tensioning fasteners (6);
and fourthly, pouring concrete (1) in the formwork (3a), and gradually removing the tensioning fastening piece (6), the adjustable end plate (5), the counter-force bracket (4) and the formwork (3a) after the concrete (1) is poured and reaches the designed strength.
9. The construction method of the simple installation device for the side wall embedded parts of the fair-faced concrete cable trench as claimed in claim 8, wherein in the third step, the integrated embedded parts are tightened and tightly attached to the side surface of the template (3a) to be in a nut tightening state on the tensioning fastener (6).
10. The construction method of the simple installation device for the side wall embedded parts of the fair-faced concrete cable trench as claimed in claim 8, wherein after the step four is completed, a cable support is erected on the integrated embedded parts, and then the cables are laid on the cable support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210615289.2A CN114825241A (en) | 2022-06-01 | 2022-06-01 | Simple installation device and construction method for side wall embedded part of fair-faced concrete cable trench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210615289.2A CN114825241A (en) | 2022-06-01 | 2022-06-01 | Simple installation device and construction method for side wall embedded part of fair-faced concrete cable trench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114825241A true CN114825241A (en) | 2022-07-29 |
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ID=82518796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210615289.2A Pending CN114825241A (en) | 2022-06-01 | 2022-06-01 | Simple installation device and construction method for side wall embedded part of fair-faced concrete cable trench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114825241A (en) |
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2022
- 2022-06-01 CN CN202210615289.2A patent/CN114825241A/en active Pending
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