CN210684767U - Combined assembly foundation for ultra-high voltage direct current transmission line iron tower in alpine region - Google Patents
Combined assembly foundation for ultra-high voltage direct current transmission line iron tower in alpine region Download PDFInfo
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- CN210684767U CN210684767U CN201921367313.5U CN201921367313U CN210684767U CN 210684767 U CN210684767 U CN 210684767U CN 201921367313 U CN201921367313 U CN 201921367313U CN 210684767 U CN210684767 U CN 210684767U
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- precast concrete
- foundation
- iron tower
- direct current
- high voltage
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 22
- 230000005540 biological transmission Effects 0.000 title claims abstract description 20
- 239000011178 precast concrete Substances 0.000 claims abstract description 52
- 238000006243 chemical reaction Methods 0.000 claims abstract description 41
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 15
- 230000002411 adverse Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 239000004567 concrete Substances 0.000 description 5
- 230000007704 transition Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
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Abstract
The utility model relates to a combined assembly foundation for an extra-high voltage direct current transmission line iron tower in alpine regions, which comprises a conversion bracket, a conversion support which is detachably arranged at the upper end of the conversion bracket and is used for connecting a foot plate of the iron tower, and a plurality of foundation components which are detachably arranged at the lower end of the conversion bracket; the foundation assembly comprises a circular truncated cone-shaped upright post and a precast concrete supporting structure which is detachably mounted at the bottom of the upright post. According to the technical scheme provided by the utility model, the utility model discloses effectively avoided the frost heaving force to the adverse effect on basis, solved the problem that high and cold area extra-high voltage direct current transmission line iron tower assembled basis component size is big, single component is heavy, reduced the construction degree of difficulty, improved the efficiency of construction, shortened the time limit for a project, the cost is reduced.
Description
Technical Field
The utility model relates to a prefabricated assembly basis technical field, concretely relates to combination formula assembly basis for extra-high voltage direct current transmission line iron tower in severe cold district.
Background
Under the background of one-by-one-way and global energy interconnection construction, a long-distance, trans-regional and large-capacity ultrahigh-voltage direct-current transmission line is difficult to avoid special regions such as alpine regions. Due to the topography and climatic characteristics of the alpine region, the frozen soil of the alpine region is not changed all the year round, so that corresponding unique geological characteristics are formed in the alpine region.
The construction window period in the alpine region is short, when a conventional cast-in-place concrete foundation is adopted, the problems of formwork erecting, pouring and maintenance of concrete in winter are difficult to avoid, the construction difficulty is high, the construction period is long, the surface quality of the concrete foundation is difficult to guarantee, and large frost heaving force is easy to generate in a frozen soil environment to generate adverse effects on the foundation. The extra-high voltage direct current transmission tower foundation has large acting force and large size and burial depth, so that the length and the section of an assembly member are large when the assembly type foundation is adopted, the weight of a single member is large, the requirement on mechanical type selection is high, and the on-site installation and in-place are not facilitated, so that the type selection of the extra-high voltage direct current transmission tower assembly type foundation in alpine regions is restricted.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a combination formula assembly basis for high and cold area extra-high voltage direct current transmission line iron tower, this combination formula assembly basis can solve cast-in-place basis among the prior art and the defect that conventional assembled basis construction is inconvenient, the severe cold area of inadaptation.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the combined type assembly foundation for the ultra-high voltage direct current transmission line iron tower in the alpine region comprises a conversion support, a conversion support and a plurality of foundation components, wherein the conversion support is detachably arranged at the upper end of the conversion support and is used for connecting iron tower foot plates, and the plurality of foundation components are detachably arranged at the lower end of the conversion support; the foundation assembly comprises a circular truncated cone-shaped upright post and a precast concrete supporting structure which is detachably mounted at the bottom of the upright post.
Furthermore, the top of the upright post is provided with an upper flange, and the bottom of the upright post is provided with a lower flange.
Furthermore, the precast concrete supporting structure comprises a plurality of precast concrete cross beams arranged in parallel and a plurality of precast concrete laths which are detachably connected below the precast concrete cross beams and arranged in parallel; the precast concrete cross beam is vertically connected with the precast concrete lath; the precast concrete laths comprise a first precast concrete lath and a second precast concrete lath; the lower flange, the precast concrete beam and the first precast concrete lath are connected together through a second flange bolt; the precast concrete cross beam and the second precast concrete lath are connected together through a connecting bolt.
Furthermore, the conversion support adopts an angle steel truss and comprises four obliquely arranged pillars and a reinforcing support connected between the adjacent pillars; the upper end of each strut is detachably connected to the conversion support, and the lower end of each strut is provided with a tower foot plate used for connecting the foundation assembly.
Further, the cylinder slope of stand is 9.
According to the technical scheme provided by the utility model, the utility model discloses effectively avoided the frost heaving force to the adverse effect on basis, solved the problem that high and cold area extra-high voltage direct current transmission line iron tower assembled basis component size is big, single component is heavy, reduced the construction degree of difficulty, improved the efficiency of construction, shortened the time limit for a project, the cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a front view of the base assembly;
FIG. 3 is a top view of the base assembly;
FIG. 4 is a front view of a transition support and transition support
FIG. 5 is a side view of the transition support and transition support;
FIG. 6 is a top view of the transition support;
fig. 7 is a top view of a tower foot.
Wherein:
1. conversion support, 2, flange bolt one, 3, stand, 4, precast concrete crossbeam, 5, flange bolt two, 6, conversion support, 7, connecting bolt, 8, first precast concrete lath, 9, second precast concrete lath, 10, tower sole, 61, conversion support main part, 62, gusset plate one, 11, tower sole board main part, 12, gusset plate two.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1, the combined assembly foundation for the ultra-high voltage direct current transmission line iron tower in the alpine region comprises a conversion support 1, a conversion support 6 which is detachably mounted at the upper end of the conversion support 1 and used for connecting iron tower foot plates, and a plurality of foundation components which are detachably mounted at the lower end of the conversion support 1. The conversion bracket 1 is provided with four support legs, and the bottom of each support leg is detachably provided with a basic assembly.
As shown in fig. 2 and 3, the foundation assembly includes a pillar 3 having a truncated cone shape and a precast concrete support structure detachably installed at the bottom of the pillar 3. The upright post 3 is made of a steel pipe. The top of the upright post 3 is provided with an upper flange, and the bottom is provided with a lower flange. The precast concrete supporting structure comprises a plurality of precast concrete cross beams 4 arranged in parallel and a plurality of precast concrete battens which are detachably connected below the precast concrete cross beams 4 and arranged in parallel. The precast concrete cross beam 4 is vertically connected with the precast concrete lath; the precast concrete plank comprises a first precast concrete plank 8 and a second precast concrete plank 9. The cylinder slope of stand 3 is 9 to offset tangential frozen swelling power.
As shown in fig. 4 and 5, the conversion bracket 1 is an angle iron truss, and includes four obliquely arranged pillars and a reinforcing brace connected between adjacent pillars. And all the angle steel components of the conversion bracket are connected through bolts. The upper end of each strut is connected to the conversion support 6 by a screw, and the lower end is provided with a tower foot plate 10 for connecting the foundation component. As shown in fig. 6, the conversion support 6 includes a conversion support body 61 and a plurality of gusset plates 62 disposed on the conversion support body 61. The conversion support main body is used for being connected with the iron tower foot plate. And the first node plate is used for being connected with the conversion bracket. The upper end of the conversion bracket 1 is connected with a tower foot plate of the iron tower through a conversion support 6. As shown in fig. 7, the footing plate 10 includes a circular footing plate body 11 and a plurality of second node plates 12 disposed on the footing plate body 11. The tower foot plate main body 11 is used for connecting an upper flange. And the second gusset plate is used for connecting the lower end of the conversion bracket. The tower foot plate 10 is connected with an upper flange in the foundation assembly through a flange bolt I2.
The utility model discloses an equipment work progress does:
firstly placing a plurality of precast concrete laths which are parallel to each other, placing the precast concrete lath I in the middle, placing the precast concrete lath II on two sides of the precast concrete lath, placing the upper cross beam above the precast concrete lath, making the upper cross beam and the precast concrete lath vertical to each other, and adopting a connecting bolt 7 to sequentially penetrate through the precast concrete cross beam 4 and the second precast concrete lath 9 to connect the two together. Then, the upright post assembled with the upper flange and the lower flange is placed above the middle position of the upper cross beam, and the lower flange, the precast concrete cross beam 4 and the first precast concrete lath 8 are sequentially penetrated through by adopting a flange bolt II 5 to be connected together, so that a single foundation assembly is formed. The middle-lower section of the foundation assembly is arranged below the ground, and the upper end of the foundation assembly is arranged above the ground. After the four basic assemblies are installed, the conversion support is hoisted, so that the four support legs of the conversion support are respectively placed above the four basic assemblies, the tower foot plate and the upper flange are connected together through the flange bolts I2, and the conversion support and the basic assemblies are assembled. And finally, the tower foot plate is connected with the iron tower through a conversion support 6.
From the aspects of design and construction feasibility, convenience and anti-freezing pulling force effectiveness, the model selection of the assembly type foundation of the extra-high voltage direct current transmission iron tower in the alpine region follows the following main principles: (1) the size of the component is miniaturized, the weight is light, and the transportation and the installation are convenient; (2) the whole foundation and the appearance of the component are better to offset the frost heaving force; (3) the material of the member should have frost heaving resistance. Through analysis severe cold district frozen soil geology characteristic, combine special high voltage direct current transmission tower foundation effort characteristics, the utility model provides a combination formula assembly basis for severe cold district extra high voltage direct current transmission line iron tower. The modular assembly foundation includes 1 four-cornered conversion support and 4 independent foundation components. Compared with the prior art, the adverse effect of the tangential frozen-out force of the frozen soil on the foundation is effectively reduced, and when the gradient of the conical surface of the upright post reaches 9 degrees, the influence of the tangential frozen-out force on the foundation can be completely eliminated. The foundation assembly is prefabricated in an industrial mode, the difficult problem that concrete is difficult to pour and condense under cold conditions can be solved, quality is guaranteed compared with that of in-situ pouring, and engineering construction standards are improved. The utility model discloses in each component member size little, light in weight, adopt small-size machinery can satisfy the construction requirement, improved mechanized construction level, solved conventional assembled basis single major, the inconvenient shortcoming of transportation installation, the cost of transportation that has significantly reduced. And all the components are connected through bolts, so that the installation on site is convenient, the labor intensity of constructors is greatly reduced, the construction efficiency is high, the labor cost is saved, and the construction period is effectively shortened. The concrete ring joint is saved by on-site stirring, pouring and maintaining, the environment is protected, and the economic and social benefits are remarkable.
The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.
Claims (5)
1. A combination formula assembly basis for severe cold district extra-high voltage direct current transmission line iron tower, its characterized in that: the device comprises a conversion bracket, a conversion support which is detachably arranged at the upper end of the conversion bracket and is used for connecting a pylon foot plate and a plurality of foundation assemblies which are detachably arranged at the lower end of the conversion bracket; the foundation assembly comprises a circular truncated cone-shaped upright post and a precast concrete supporting structure which is detachably mounted at the bottom of the upright post.
2. The combined assembly foundation for the ultra-high voltage direct current transmission line iron tower in the alpine region according to claim 1, characterized in that: the top of the upright post is provided with an upper flange, and the bottom of the upright post is provided with a lower flange.
3. The combined assembly foundation for the ultra-high voltage direct current transmission line iron tower in the alpine region according to claim 2, characterized in that: the precast concrete supporting structure comprises a plurality of precast concrete cross beams arranged in parallel and a plurality of precast concrete laths which are detachably connected below the precast concrete cross beams and arranged in parallel; the precast concrete cross beam is vertically connected with the precast concrete lath; the precast concrete laths comprise a first precast concrete lath and a second precast concrete lath; the lower flange, the precast concrete beam and the first precast concrete lath are connected together through a second flange bolt; the precast concrete cross beam and the second precast concrete lath are connected together through a connecting bolt.
4. The combined assembly foundation for the ultra-high voltage direct current transmission line iron tower in the alpine region according to claim 1, characterized in that: the conversion bracket adopts an angle steel truss and comprises four obliquely arranged pillars and a reinforcing support connected between the adjacent pillars; the upper end of each strut is detachably connected to the conversion support, and the lower end of each strut is provided with a tower foot plate used for connecting the foundation assembly.
5. The combined assembly foundation for the ultra-high voltage direct current transmission line iron tower in the alpine region according to claim 1, characterized in that: the cylinder slope of stand is 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921367313.5U CN210684767U (en) | 2019-08-22 | 2019-08-22 | Combined assembly foundation for ultra-high voltage direct current transmission line iron tower in alpine region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921367313.5U CN210684767U (en) | 2019-08-22 | 2019-08-22 | Combined assembly foundation for ultra-high voltage direct current transmission line iron tower in alpine region |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210684767U true CN210684767U (en) | 2020-06-05 |
Family
ID=70894619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921367313.5U Active CN210684767U (en) | 2019-08-22 | 2019-08-22 | Combined assembly foundation for ultra-high voltage direct current transmission line iron tower in alpine region |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210684767U (en) |
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2019
- 2019-08-22 CN CN201921367313.5U patent/CN210684767U/en active Active
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