CN112302881B - Precast concrete pipe sheet connection structure for steel-concrete tower - Google Patents
Precast concrete pipe sheet connection structure for steel-concrete tower Download PDFInfo
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- CN112302881B CN112302881B CN202010967093.0A CN202010967093A CN112302881B CN 112302881 B CN112302881 B CN 112302881B CN 202010967093 A CN202010967093 A CN 202010967093A CN 112302881 B CN112302881 B CN 112302881B
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- 239000004567 concrete Substances 0.000 title claims abstract description 45
- 239000011178 precast concrete Substances 0.000 title claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 71
- 239000010959 steel Substances 0.000 claims abstract description 71
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 9
- 238000010248 power generation Methods 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 5
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 5
- 241001330002 Bambuseae Species 0.000 claims description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 5
- 239000011425 bamboo Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 description 7
- 239000011440 grout Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000029087 digestion Effects 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process 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
- 238000000034 method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Abstract
The invention discloses a precast concrete pipe sheet connection structure for a steel-concrete tower, which relates to the technical field of wind power generation and is characterized in that: the system comprises precast concrete segments, pre-buried steel structure connectors, stiffening ribs, reinforcing steel bars, bolts, horizontal steel bars, vertical steel bars, short steel bars, hooked lacing wires, zigzag notches, concrete and steel plates with studs. The middle part of the height of the vertical seam of the precast concrete pipe sheet is connected through a pre-buried steel structure connecting piece through bolts, and temporary fixing and alignment are carried out. The zigzag notch is reserved at the upper end and the lower end of the vertical joint, the horizontal steel bars of the two precast concrete segments are connected through the short steel bars, and concrete is poured into the zigzag notch for accurate alignment after the steel plates with the bolts are placed. And a zigzag notch is reserved in the middle position of the transverse seam between the upper precast concrete segment and the lower precast concrete segment, and after the vertical steel bars are connected by adopting the short steel bars, a steel plate with a bolt is placed at the corresponding position of the zigzag notch for concrete pouring.
Description
Technical Field
The invention relates to the technical field of wind power generation.
Background
According to the data of the national weather department, the land wind resources of China are rich, the wind resources available for development and utilization are as high as 253GW, and the land wind resource rich area of China is mainly located in the area of' three northeast (northeast, north China and northwest). These areas are underdeveloped economically, the wind power in-situ digestion capability is limited, meanwhile, the areas are far away from the areas with main electric load peaks (eastern and southern coastal areas), a large number of extra-high voltage transmission lines are required to be constructed for long-distance transmission, and the transmission channels are insufficient, so that the wind power digestion capability is insufficient in the 'three north' areas, and the wind abandoning phenomenon is serious. In order to improve the power generation efficiency, the wind power development focus of China is changed from the three north areas to the middle and east areas and the south areas. However, the middle east and the south belong to the low wind speed region, and wind resources are not abundant compared with the three north regions, so that in order to fully utilize the poor wind resources in the low wind speed region and meet the requirements of economy, rationality and feasibility of the tower structure, superior high towers and super high tower structural forms are required to be researched and popularized so as to meet the wind power development requirements of the low wind speed region.
The steel-concrete tower has the advantages of good stability, high bearing capacity, good fatigue resistance and the like, but the volume and the mass of the concrete tower are large, and the hoisting is difficult, so that the precast concrete segments are adopted, the hoisting weight is reduced, and the cost is saved. The key technology for the prefabricated concrete segment is that the transverse seam and the vertical seam are connected, the traditional connecting mode adopts the common poured concrete, the formwork is required to be erected, the field wet operation workload is large, therefore, the novel connecting construction method is provided, the installation and fixation are convenient, meanwhile, the wet operation is less, the formwork is not required to be erected, the installation efficiency is improved, and the popularization and application advantages are obvious.
Disclosure of Invention
The invention provides a prefabricated concrete pipe sheet connecting structure for a steel-concrete tower, which consists of prefabricated concrete pipe sheets, pre-buried steel structure connecting pieces, stiffening ribs, reinforcing steel bars, bolts, horizontal steel bars, vertical steel bars, short steel bars, hooked lacing bars, zigzag notches, concrete and steel plates with bolts.
The transverse seam and the vertical seam of the precast concrete segment are connected. For the vertical seam, the middle part of the vertical seam is connected by bolts through a pre-buried steel structure connecting piece, the two ends of the vertical seam are provided with zigzag notches, horizontal steel bars in the precast concrete segment are connected through short steel bars, then steel plates with bolts are placed at the zigzag notches, and finally concrete is poured into the zigzag notches. For transverse joint, set up zigzag notch at the middle part of precast concrete pipe piece width, link to each other the vertical reinforcing bar in the precast concrete pipe piece through the short reinforcing bar, place the steel sheet of taking the peg in zigzag notch's position, pour concrete in zigzag notch at last.
The construction solves the complexity of pouring concrete along the seam in the prior art, reduces the workload of on-site wet operation, can realize fully assembled construction of factory prefabrication and on-site assembly, has simple node connection, saves cost, improves the installation efficiency, has high comprehensive benefit and has wide engineering application prospect.
The technical scheme of the invention is as follows:
a prefabricated concrete pipe sheet connecting structure for a steel-concrete tower cylinder comprises prefabricated concrete pipe sheets, pre-buried steel structure connecting pieces, stiffening ribs, reinforcing steel bars, bolts, horizontal steel bars, vertical steel bars, short steel bars, hooked lacing wires, saw-tooth notch, concrete and steel plates with bolts.
The construction is mainly used for connecting precast concrete segments in the steel-concrete tower. When installing the concrete tower section of thick bamboo, the concrete tower section of thick bamboo comprises multi-disc precast concrete pipe piece, at the in-process of assembling precast concrete pipe piece, connects the vertical joint of concrete tower section of thick bamboo at first, adopts pre-buried steel construction connecting piece to carry out bolted connection along vertical joint high middle part, accomplishes temporary installation fixedly, and vertical joint both ends set up the zigzag notch, link to each other the horizontal reinforcement in the precast concrete section of thick bamboo through the short reinforcing bar, place the steel sheet of taking the peg in the position of zigzag notch again, and at last pour concrete in the zigzag notch. And after the prefabricated concrete segments of one layer are installed, connecting transverse seams of the upper layer and the lower layer. For transverse joint, set up zigzag notch at the middle part of precast concrete pipe piece width, link to each other the vertical reinforcing bar in the precast concrete pipe piece through the short reinforcing bar, place the steel sheet of taking the peg in zigzag notch's position, pour concrete in zigzag notch at last.
Compared with the prior art, the invention has the following beneficial effects:
(1) When the vertical joint is connected, the pre-buried steel structure connecting piece is adopted for temporary fixed connection, so that the side rigidity during installation is increased while the installation and the positioning are facilitated.
(2) The zigzag slot is adopted at vertical seam both ends and horizontal seam middle part to carry out the grout and is connected, only needs to be connected horizontal reinforcing bar and vertical reinforcing bar to two precast concrete section of jurisdictions before the grout, and grout can adopt high-strength grouting material, and intensity is high and the maintenance reaches the design intensity and only needs three days, and installation effectiveness is high, avoids following the setting up of seam through length grout and template, reduces the work load of wet operation.
(3) The steel plate with the pegs is used for connecting the zigzag notch, the pegs can resist the mutual up-and-down dislocation between two precast concrete segments and prevent separation under the action of wind load and earthquake load, the pegs in the concrete have higher shear bearing capacity, and the pouring of the concrete can be completed without setting up a template at the same time when the steel plate with the pegs has good mechanical properties to the connecting nodes.
(3) The construction mode of factory prefabrication and field assembly is adopted in the construction, and the on-site installation only needs to conduct bolt connection and grouting leveling of the zigzag notch on the embedded steel structure connecting piece, so that the installation efficiency of the precast concrete segment is improved.
Drawings
FIG. 1 is an overall schematic of the present invention;
FIG. 2 is a schematic view of a pre-buried steel structure connector of the present invention;
FIG. 3 is a schematic view of the connection of the zigzag slot of the present invention;
FIG. 4 is a schematic view of a steel plate with studs according to the present invention;
In the figure: 1-precast concrete segment, 2-pre-buried steel structure connecting piece, 3-stiffening rib, 4-reinforcing steel bar, 5-bolt, 6-horizontal steel bar, 7-vertical steel bar, 8-short steel bar, 9-hooked lacing wire, 10-zigzag notch, 11-concrete, 12-steel plate, 13-vertical joint, 14-transverse joint and 15-stud.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, a precast concrete segment connection structure for a steel-concrete segment (1) is provided for connecting a vertical slit (13) and a horizontal slit (14) of the precast concrete segment, a pre-buried steel structure connection member (2) is located in the middle along the height of the vertical slit, and zigzag notches (10) are located at both ends of the vertical slit (13) and in the middle along the length of the horizontal slit (14).
As shown in fig. 2, the upper and lower ends of the embedded steel structure connecting piece (2) are respectively triangular stiffening ribs (3), and one side parallel to the precast concrete segment (1) is embedded in the precast concrete segment (1) and is in reinforced connection through reinforcing steel bars (4), so that the embedded steel structure connecting piece (2) is prevented from being pulled out. The other side is connected with the embedded steel structure connecting piece (2) in the other precast concrete segment (1) through bolts, and generally 5-10 bolts are needed.
As shown in fig. 3, the zigzag slot (10) is provided with exposed horizontal steel bars (6) or vertical steel bars (7), after the two precast concrete segments (1) are adjusted to be aligned, the horizontal steel bars (6) or the vertical steel bars (7) at the corresponding positions are connected through the short steel bars (8), then the steel plate (12) with the bolts (15) is buckled at the position of the zigzag slot (10), and finally, concrete (11) is poured in the zigzag slot (10).
As shown in fig. 4, the steel plates (12) are uniformly provided with the pegs (15) which are finally embedded in the concrete (11) to prevent the mutual dislocation and separation of the precast concrete segments (1).
Claims (1)
1. A precast concrete pipe piece connection structure for a steel-concrete tower section of thick bamboo relates to wind power generation technical field, characterized by: the concrete pile comprises prefabricated concrete segments (1), pre-buried steel structure connecting pieces (2), stiffening ribs (3), reinforcing steel bars (4), bolts (5), horizontal steel bars (6), vertical steel bars (7), short steel bars (8), zigzag notches (10), concrete (11) and steel plates (12) with bolts (15);
When the concrete tower barrel is installed, the concrete tower barrel is composed of a plurality of precast concrete pipe pieces, vertical joints (13) and transverse joints (14) of the precast concrete pipe pieces (1) of the steel-concrete tower barrel are all required to be connected, bolts (5) are connected at the middle of the height of the vertical joints (13) by adopting pre-buried steel structure connecting pieces (2), saw-tooth notches (10) are arranged at two ends of the vertical joints (13), horizontal steel bars (6) in the precast concrete pipe pieces (1) are connected through short steel bars (8), steel plates (12) with bolts (15) are placed at the positions of the saw-tooth notches (10), finally concrete (11) is poured into the saw-tooth notches (10), and the thickness of the post-poured concrete (11) is half of that of the precast concrete pipe pieces (1); after the installation of a layer of precast concrete segment is completed, connecting transverse seams of an upper layer and a lower layer, arranging a zigzag slot (10) in the middle of the width of the precast concrete segment (1) for the transverse seams (14), connecting vertical steel bars (7) in the precast concrete segment (1) through short steel bars (8), placing a steel plate (12) with a bolt (15) at the position of the zigzag slot (10), and finally pouring concrete (11) in the zigzag slot (10), wherein the thickness of the post-poured concrete (11) is half of that of the precast concrete segment (1);
the embedded steel structure connecting piece (2) is embedded into the middle part of the thickness of the precast concrete segment (1) and is connected in a reinforcing way by reinforcing steel bars (4); the stiffening ribs (3) are respectively positioned on the upper side and the lower side of the embedded steel structure connecting piece (2), and the stiffening ribs (3) are triangular stiffening ribs;
The side length of the embedded steel structure connecting piece (2) is 800-1000 mm, and the thickness of the steel plate is 8-12 mm; the diameter of the reinforcing steel bar (4) is 18-25 mm; the bolts (5) are connected by friction type high-strength bolts, and only 5-10 bolts are needed for a single embedded steel structure connecting piece (2); the embedded steel structure connecting piece (2), the stiffening rib (3), the reinforcing steel bar (4), the zigzag notch (10) and the steel plate (12) with the bolt (15) are prefabricated in a factory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010967093.0A CN112302881B (en) | 2020-09-15 | Precast concrete pipe sheet connection structure for steel-concrete tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010967093.0A CN112302881B (en) | 2020-09-15 | Precast concrete pipe sheet connection structure for steel-concrete tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112302881A CN112302881A (en) | 2021-02-02 |
| CN112302881B true CN112302881B (en) | 2024-06-25 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195668A (en) * | 2013-04-02 | 2013-07-10 | 中国水电顾问集团西北勘测设计研究院 | Novel wind power generation precast concrete tower component seaming structure and method |
| CN214741845U (en) * | 2020-09-15 | 2021-11-16 | 重庆大学 | Precast concrete pipe sheet connecting structure for steel-concrete tower cylinder |
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195668A (en) * | 2013-04-02 | 2013-07-10 | 中国水电顾问集团西北勘测设计研究院 | Novel wind power generation precast concrete tower component seaming structure and method |
| CN214741845U (en) * | 2020-09-15 | 2021-11-16 | 重庆大学 | Precast concrete pipe sheet connecting structure for steel-concrete tower cylinder |
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