CN220789834U - Composite foundation structure of plate-type soil box of power transmission tower - Google Patents
Composite foundation structure of plate-type soil box of power transmission tower Download PDFInfo
- Publication number
- CN220789834U CN220789834U CN202322493934.0U CN202322493934U CN220789834U CN 220789834 U CN220789834 U CN 220789834U CN 202322493934 U CN202322493934 U CN 202322493934U CN 220789834 U CN220789834 U CN 220789834U
- Authority
- CN
- China
- Prior art keywords
- bottom plate
- foundation
- layer bottom
- precast concrete
- plate
- Prior art date
- 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.)
- Active
Links
- 239000002689 soil Substances 0.000 title claims abstract description 35
- 230000005540 biological transmission Effects 0.000 title claims abstract description 19
- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 239000011178 precast concrete Substances 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 30
- 239000004567 concrete Substances 0.000 abstract description 20
- 238000009412 basement excavation Methods 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000009933 burial Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Foundations (AREA)
Abstract
The utility model discloses a composite foundation structure of a plate-type soil box of a power transmission tower, which comprises the following components: the bottom of the foundation upright post is provided with an upper-layer bottom plate, and the bottom of the upper-layer bottom plate is provided with a lower-layer bottom plate; the side wall and the bottom of the precast concrete box are embedded with precast concrete box steel bars, and the lower-layer bottom plate is arranged at the top of the precast concrete box through a cushion layer; compared with the traditional excavation backfill foundation, the novel foundation fully utilizes the residual soil excavated by the tower position, avoids random stacking of construction waste soil, is beneficial to environmental protection, and reduces the consumption of foundation concrete and steel bars; the foundation has shallow burial depth, and is convenient for on-site construction and excavation.
Description
Technical Field
The utility model relates to a composite foundation structure of a plate-type soil box of a power transmission tower, and belongs to the technical field of power transmission towers and communication towers.
Background
With the increasing development of the electric power industry in China, the contradiction between the engineering construction of the transmission line and the environmental protection becomes more and more prominent. The national network company puts forward the requirements for developing the construction of the power transmission line of resource saving type, environment friendly type, new technology, new process and new material (two types and three types). How to protect the environment and save resources has become an important subject for research and exploration of power construction personnel. In the engineering construction of the power transmission line, the foundation construction of the tower is a heavy game, the foundation construction period accounts for 50% -60% of the whole construction period, and the cost accounts for more than one third of the construction cost of the body. The foundation occupies an important position in the design and construction of the power transmission line engineering, and has great influence on the investment, safety and normal use of the whole line. Because the line engineering distance is long, construction sites are scattered, and traffic conditions are poor, the design, construction and detection levels of the line foundation are different from those of other industries in a certain degree.
The following four aspects are considered as important points for the selection of the basic scheme of the power transmission line: (1) incorporating engineered terrain. The geological characteristics and the transportation conditions are comprehensively analyzed and compared, and a proper basic pattern is selected; (2) On the premise of safety and reliability, the method is economical and environment-friendly as far as possible, and reduces the damage of construction to the environment; the characteristics of each foundation type are fully developed, and different foundation types are selected according to different terrains and geology; (4) Special foundation types and treatment measures are provided for bad foundations. According to the current design application and construction situation of the existing tower foundation engineering in China, reasonable structural types are selected by combining the engineering characteristics of the tower foundation, horizontal force and toys borne by the foundation are reduced, and the stress state of the foundation is improved. Attention is paid to environmental protection and sustainable development strategies, and the influence of foundation construction on the surrounding environment is small. Attention is paid to workability of construction and controllability of quality.
The excavation backfill type foundation commonly used at present is a flexible plate type foundation and a rigid step foundation. The rigid step foundation is one of the main foundation types commonly used in the past transmission line iron towers, and is mainly characterized in that the foundation is kept stable in pulling up by self weight and disturbed backfill soil. The main advantage of the rigid foundation of the straight column is that the main column of the foundation is vertical to the ground, the bottom plate is not provided with steel bars, the construction difficulty is small, and the construction process is mature. However, in order to ensure the requirement of stable pulling-up and meet the requirement of the punching strength of the section, the size of the bottom plate must be increased, the height of the steps is increased, the dosage of concrete is increased, and the construction cost is increased.
At present, the method is rarely applied to general foundation soil, and is only used for towers under special geological conditions, such as towers with higher groundwater level or towers which mainly depend on the self weight of the foundation to resist pulling-up force. The flexible foundation is suitable for the conditions that the load of the upper structure is large, the foundation is soft, and the requirement cannot be met by using the rigid foundation. The flexible foundation may be classified into a straight-column plate type foundation and an inclined-column plate type foundation according to exterior characteristics. The flexible foundation slab is large, soil on the slab can be fully utilized to resist pulling up, the self weight of the foundation is light, the additional stress on foundation soil is small, the concrete consumption is greatly reduced compared with a rigid foundation, the construction difficulty is low, and the economical efficiency is obvious. For the two excavation backfill foundations, the foundation is easy to be buried deep or the size of the bottom plate is bigger due to the upward pulling load action of the foundation and the upper backfill soil weight, so that the foundation construction cost is increased, a large amount of construction residual soil is generated, and the environment protection is not facilitated.
Disclosure of Invention
The utility model aims to overcome the defects that the existing excavation backfill foundation mainly depends on the self weight of the foundation and the weight of backfill soil at the upper part of the foundation to resist the upward pulling load of the foundation, so that the foundation burial depth or the size of a bottom plate is large easily, and the environment protection is not facilitated.
A composite foundation structure for a power pylon panel soil box, comprising:
the bottom of the foundation upright post is provided with an upper-layer bottom plate, and the bottom of the upper-layer bottom plate is provided with a lower-layer bottom plate;
the prefabricated concrete box, prefabricated concrete box reinforcing steel bars are embedded into the side wall and the bottom of the prefabricated concrete box, and the lower-layer bottom plate is arranged at the top of the prefabricated concrete box through a cushion layer.
Further, the precast concrete box steel bars penetrate through the cushion layer and penetrate into the lower-layer bottom plate.
Further, the precast concrete box is internally used for placing internal filling.
Further, upright post main ribs are uniformly embedded in the foundation upright posts.
Further, the upright post main ribs sequentially penetrate through the upper layer bottom plate to the lower layer plate.
Further, upper layer bottom plate reinforcing steel bars are embedded in the upper layer bottom plate.
Further, the lower-layer bottom plate is embedded with lower-layer bottom plate steel bars.
Further, the lower-layer bottom plate steel bars are bound with the precast concrete box steel bars.
Compared with the prior art, the utility model has the beneficial effects that: the utility model provides a power transmission tower plate-soil box composite foundation and a use method thereof, wherein the composite foundation is formed by combining a flexible plate-type foundation and a plurality of precast concrete boxes; compared with the traditional excavation backfill foundation, the novel foundation fully utilizes the residual soil excavated by the tower, avoids random stacking of construction waste soil, is beneficial to environmental protection, and reduces the consumption of foundation concrete and steel bars; the foundation has shallow burial depth, and is convenient for on-site construction and excavation.
Drawings
FIG. 1 is a schematic diagram of a structural connection of the present utility model;
FIG. 2 is a top view of the structure of the present utility model;
in the figure: 1. a base upright; 2. an upper floor; 3. a lower floor; 4. a cushion layer; 5. prefabricating a concrete box; 6. filling the inside with soil; 7. a column main rib; 8. upper layer bottom plate steel bars; 9. lower floor steel bars; 10. and prefabricating concrete box steel bars.
Description of the embodiments
The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
As shown in fig. 1-2, a composite foundation structure of a plate-type soil box of a power transmission tower is disclosed, which comprises:
the foundation column 1, wherein an upper-layer bottom plate 2 is arranged at the bottom of the foundation column 1, and a lower-layer bottom plate 3 is arranged at the bottom of the upper-layer bottom plate 2;
the precast concrete box 5 is used for placing the inside filling 6 in the precast concrete box 5, precast concrete box reinforcing steel bars 10 are embedded in the side wall and the bottom of the precast concrete box 5, and the lower-layer bottom plate 3 is arranged at the top of the precast concrete box 5 through the cushion layer 4.
In this embodiment, for the purpose of stabilizing the composite foundation structure, the precast concrete box reinforcement 10 penetrates through the cushion layer 4 and goes deep into the lower-layer bottom plate 3, the lower-layer bottom plate reinforcement 9 is embedded into the lower-layer bottom plate 3, and the lower-layer bottom plate reinforcement 9 and the precast concrete box reinforcement 10 are bound. The foundation upright 1 is internally and evenly embedded with upright main ribs 7, the upright main ribs 7 sequentially penetrate through the upper-layer bottom plate 2 until the lower layer plate 3 is arranged, and the upper-layer bottom plate 2 is internally embedded with upper-layer bottom plate reinforcing steel bars 8.
The prefabricated concrete box 5 is processed in factories, the size and the number of the prefabricated concrete box 5 are determined according to the design result, modularized batch production can be realized, soil around the box body cannot be overdrawed or laid down in the installation process of the prefabricated concrete box 5, the influence on the downward bearing capacity of the soil below the box body is avoided, a foundation cushion layer is poured after the prefabricated concrete box 5 is installed in place, and then binding of the upright post reinforcing steel bars 7, the upper-layer bottom plate reinforcing steel bars 8 and the lower-layer bottom plate reinforcing steel bars 9 is started.
And after binding of the upright post reinforcing steel bars 7, the upper-layer bottom plate reinforcing steel bars 8 and the lower-layer bottom plate reinforcing steel bars 9 is completed, the foundation upright post 1, the upper-layer bottom plate 2 and the lower-layer bottom plate 3 are manufactured on site.
After the installation of the templates of the foundation upright 1, the upper-layer bottom plate 2 and the lower-layer bottom plate 3 is completed, the concrete of the foundation upright 1, the upper-layer bottom plate 2 and the lower-layer bottom plate 3 is cast in situ.
The composite foundation and the practical method thereof have the following operation steps:
determining the size, the number and the internal reinforcement of the precast concrete boxes according to the design result, and drawing construction drawings of the precast concrete boxes and the upper flexible plate type foundation;
the method comprises the steps that a factory completes binding of reinforcing steel bars and concrete pouring according to a construction drawing of a precast concrete box, and after pouring is completed, a mould is removed and maintenance is carried out;
after the precast concrete box is maintained, transporting the precast concrete box to a construction site, and placing the precast concrete box near a corresponding tower position by adopting an automobile crane;
positioning the mounting position of the concrete box and starting to mount, wherein mechanical hole digging is adopted, and soil around the box cannot be overdraked or inclined in the construction process, so that the bearing capacity of the soil below the box is prevented from being influenced;
filling the residual soil excavated from the tower position in the soil box after the prefabricated concrete box is installed on site, backfilling and tamping the residual soil in layers of 300mm, and removing sundries in the backfilled soil;
finishing pouring of the foundation cushion layer on site;
binding upright post steel bars of a foundation, upper-layer bottom plate steel bars and lower-layer bottom plate steel bars on site, binding main steel bars of a precast concrete box with the lower-layer bottom plate steel bars, and improving the integrity of the composite foundation;
finishing the installation of foundation bolts at the top of the upright post on site;
finishing the manufacture and installation of the foundation upright, the upper bottom plate and the lower bottom plate module on site;
completing concrete pouring of the foundation upright post, the upper bottom plate and the lower bottom plate on site;
and finishing the foundation construction quality detection and concrete maintenance work on site, and starting the assembly of the upper power transmission tower.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.
Claims (8)
1. The utility model provides a board-like soil box composite foundation structure of transmission tower which characterized in that includes:
the device comprises a foundation column (1), wherein an upper-layer bottom plate (2) is arranged at the bottom of the foundation column (1), and a lower-layer bottom plate (3) is arranged at the bottom of the upper-layer bottom plate (2);
precast concrete case (5), precast concrete case reinforcing bar (10) have all been embedded to the lateral wall and the bottom of precast concrete case (5), lower floor's bottom plate (3) are located the top of precast concrete case (5) through bed course (4).
2. The steel pylon and soil box composite foundation structure of claim 1, wherein the precast concrete box rebars (10) penetrate through the bedding layers (4) and into the underlying base plate (3).
3. The pylon panel-type soil box composite foundation structure of claim 1 wherein the precast concrete box (5) is internally filled with internal fill (6).
4. The composite foundation structure of the power transmission tower plate soil box according to claim 1, wherein upright main ribs (7) are uniformly embedded in the foundation upright (1).
5. The composite foundation structure of the power transmission tower plate soil box according to claim 4, wherein the main upright ribs (7) sequentially penetrate through the upper-layer bottom plate (2) to the lower-layer bottom plate (3).
6. The composite foundation structure of the power transmission tower plate soil box according to claim 1, wherein upper layer bottom plate steel bars (8) are embedded in the upper layer bottom plate (2).
7. The composite foundation structure of the power transmission tower plate soil box according to claim 1, wherein the lower-layer bottom plate (3) is internally embedded with lower-layer bottom plate steel bars (9).
8. The steel pylon and soil box composite foundation structure of claim 7, wherein the lower floor base plate rebar (9) is tied to precast concrete box rebar (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322493934.0U CN220789834U (en) | 2023-09-13 | 2023-09-13 | Composite foundation structure of plate-type soil box of power transmission tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322493934.0U CN220789834U (en) | 2023-09-13 | 2023-09-13 | Composite foundation structure of plate-type soil box of power transmission tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220789834U true CN220789834U (en) | 2024-04-16 |
Family
ID=90652258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322493934.0U Active CN220789834U (en) | 2023-09-13 | 2023-09-13 | Composite foundation structure of plate-type soil box of power transmission tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220789834U (en) |
-
2023
- 2023-09-13 CN CN202322493934.0U patent/CN220789834U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102966119B (en) | Geogrid reinforced wall and construction method thereof | |
| CN101509261B (en) | Method for pile plate base for ultra-high voltage electric power line steel tower on soft foundation | |
| CN109024662A (en) | Method of the anchor pile underpinning without basement building underground space increasing layer | |
| CN111236260A (en) | Variable-rigidity combined type prefabricated double-row pile supporting structure and construction method thereof | |
| CN111441343A (en) | Mountain photovoltaic support micropore cast-in-place pile foundation system, construction method and application | |
| CN216041201U (en) | Earlier prop and dig double-deck diagonal bracing foundation ditch enclosure system afterwards | |
| CN110306589B (en) | Method for forming assembled reinforced earth retaining wall | |
| CN210106749U (en) | Counter-force structure of soft soil foundation super large section push pipe jacking operation | |
| CN220789834U (en) | Composite foundation structure of plate-type soil box of power transmission tower | |
| CN104005414A (en) | Method for constructing large-diameter reinforced concrete cast-in-place pile supporting stand column | |
| CN206987028U (en) | A kind of combination assembled underground aqua storage tank | |
| CN212477794U (en) | Large-scale exhibition hall pile slab structure terrace in weak soil area | |
| CN111894036B (en) | Construction method for additionally arranging basement on strip-shaped foundation building | |
| CN209260748U (en) | A kind of stepped tower crane | |
| CN209339172U (en) | A kind of novel peg board composite foundation | |
| CN210507517U (en) | Combined member suitable for retaining wall heightening | |
| CN210134292U (en) | Z-shaped retaining wall supporting structure for overhanging road shoulder of high-speed railway foundation | |
| CN113431075A (en) | Herringbone pile anchor assembly type foundation suitable for low-voltage power transmission line | |
| CN201495554U (en) | Anchor bolt combination excavating compound base | |
| CN110777844A (en) | Wall supporting structure based on waste guardrail stand columns and construction method thereof | |
| CN111021391A (en) | Large-scale exhibition hall pile slab structure terrace in weak soil area | |
| CN218521839U (en) | Assembled floor column retaining wall | |
| CN212956547U (en) | Foundation ditch support tower crane basis integral type structure | |
| CN104912200B (en) | Building method of underground shallow layer fully automatic parking garage | |
| CN219825267U (en) | Prefabricated template system of basement elevator sump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |