CN111441258A - Connection-free self-stability large cantilever bent cap support system - Google Patents
Connection-free self-stability large cantilever bent cap support system Download PDFInfo
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- CN111441258A CN111441258A CN202010435588.9A CN202010435588A CN111441258A CN 111441258 A CN111441258 A CN 111441258A CN 202010435588 A CN202010435588 A CN 202010435588A CN 111441258 A CN111441258 A CN 111441258A
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- bent cap
- connection
- cantilever
- base
- bearing beam
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/10—Cantilevered erection
- E01D21/105—Balanced cantilevered erection
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a connection-free large-cantilever bent cap support system with self-stability, which comprises a bearing beam, inclined rods, upright rods, a supporting beam, a fine adjustment mechanism and a discharging mechanism, wherein the bearing beam is arranged on two sides of a pier body along the length direction of the bent cap, the bottom of a cantilever of the bearing beam is provided with an inclined rod node plate and an upright rod node plate, the inclined rods are connected with the bearing beam through the inclined rod node plate, the upright rods are connected with the bearing beam through the upright rod node plate, the supporting beam is arranged between the two upright rods on the same side of the pier body along the width direction of the bent cap, the fine adjustment mechanism comprises adjusting screws and contact base plates, a plurality of mounting holes are uniformly formed in the supporting beam, one ends of the adjusting screws are fixedly connected with the contact base plates, the other ends of the adjusting screws penetrate through the mounting holes, and the discharging mechanism is. The invention has simple and firm structure, realizes the close contact with the pier body through a triangular stress system and a fine adjustment mechanism, limits the vertical deformation of the upright stanchion, provides support and reduces the deformation and stress of the cantilever end of the bearing beam.
Description
Technical Field
The invention belongs to the technical field of highway bridge construction and particularly relates to a connection-free self-stability large cantilever bent cap support system.
Background
With the continuous development of urban viaduct construction, the large cantilever prestressed concrete bent cap has the advantages of small floor area, light structure, attractive appearance, good passing sight line, full utilization of urban road space and the like, and is widely applied. In order to relieve increasingly tense traffic pressure, the urban roads and viaducts are wider and wider, the total length of the bent cap is larger than 35m, and the length of the cantilever on one side is gradually more than 10 m. In order to reduce the influence on the road traffic under the bridge as much as possible, higher requirements are put forward on the construction of the large cantilever bent cap.
At present, a large cantilever capping beam support used in the construction of highway bridges generally adopts a floor type support or a truss type spandrel girder, for example, a document with the application number of 201910281143.7 discloses a large-span cantilever truss type capping beam support system which sequentially comprises a supporting device, an elevation adjusting device, a truss system and an operation platform from bottom to top; the truss system comprises two truss main bodies, each truss main body comprises two truss components, each truss component comprises an upper chord and a lower chord, a plurality of upper nodes are arranged on the upper chord, a plurality of lower nodes are arranged on the lower chord, and a straight web member is arranged between each upper node and the corresponding lower node; the middle point of every two adjacent upper nodes is provided with a central node, and an oblique web member which is distributed in a splayed shape is arranged between each central node and two adjacent lower nodes.
Disclosure of Invention
The invention provides a connection-free large-self-stability cantilever bent cap support system, which overcomes the defects of the prior art, has a simple structure and light weight, reduces the cost and the expense, and is convenient to install and dismantle.
The technical scheme of the invention is as follows: the utility model provides a big cantilever bent cap mounting system of connection-free self-stability, includes spandrel girder, down tube, pole setting, supporting beam, a plurality of fine-tuning, a plurality of mechanism that unloads, the spandrel girder sets up along the length direction of bent cap in pier shaft both sides, the cantilever bottom of spandrel girder is from outer to interior down tube gusset plate, pole setting gusset plate that is equipped with in proper order, the down tube passes through the down tube gusset plate and is connected with the spandrel girder, the pole setting passes through the pole setting gusset plate and is connected with the spandrel girder, the supporting beam sets up between two poles of pier shaft with one side along bent cap width direction, fine-tuning includes adjusting screw, contact backing plate, evenly be equipped with a plurality of mounting holes on the supporting beam, adjusting screw one end and contact backing plate fixed connection, the other end pass the mounting hole and keep away from the pier shaft, the mechanism that unloads is evenly arranged on the pier shaft.
The scheme is further that one end of the diagonal rod is rotatably connected with the diagonal rod gusset plate through a pin shaft, and the other end of the diagonal rod is connected with the bottom end of the vertical rod.
The scheme is further that the top end of the vertical rod is rotatably connected with the vertical rod gusset plate through a pin shaft.
And furthermore, nuts are arranged on the adjusting screw rods on two sides of the supporting beam, and a nut base plate is arranged between each nut and the supporting beam.
The scheme is further that the nut, the nut base plate and the supporting cross beam are fixedly connected in a welding mode.
The scheme is further, it includes upper support piece, connects otic placode, lower support piece, base, fixed rod iron, adjusting nut to unload the mechanism that falls, fixed rod iron is worn to establish on the pre-buried hole of pier shaft, base, lower support piece, upper support piece erect in proper order on fixed rod iron from supreme down, the top of upper support piece bottom and lower support piece is the inclined plane structure, and upper support piece can slide on lower support piece, one side of lower support piece is equipped with the rectangle and connects the otic placode, be equipped with two through-holes on connecting the otic placode, adjusting nut passes the through-hole and is connected with upper support piece, the bottom of base is equipped with two logical grooves, it is unanimous with fixed rod iron diameter to lead to the groove size, the base passes through logical groove joint on fixed rod iron.
The scheme is further that a plurality of cross bars are evenly arranged above the bearing beam to form an operation platform.
The scheme is further, the base is the cube structure, the bottom of base is equipped with two and leads to the groove, it is unanimous with fixed rod iron diameter to lead to the groove size, the base passes through logical groove joint on fixed rod iron.
Further, the base comprises a top plate and a plurality of rib plates, and the rib plates are vertically arranged at the bottom of the top plate.
The scheme is further that the number of the rib plates is three, a cavity is formed between every two adjacent rib plates, and the size of the cavity is consistent with that of the fixed steel bar.
The invention has the advantages that:
the structure of the invention is firm, a triangular stress system is formed by the diagonal rods, the vertical rods and the bearing beam and is used as a supporting structure of the bearing beam, enough support can be provided, the vertical deformation of the bearing beam is limited, and the cover beam bottom die system can not sink in the cover beam construction process;
according to the invention, the adjusting screw on the supporting beam is closely attached to the pier body, so that the displacement of the triangular system is limited, and the vertical deflection of the cantilever part of the bearing beam is greatly reduced due to the limitation of the axial extension and contraction of the rod piece, an embedded part is not required to be arranged on the side surface of the pier body, and the lower part of the triangular stress system is not required to be welded and connected with the embedded part and the like, so that the structure has strong self-stability, and the construction engineering amount and difficulty on site are greatly reduced;
the invention avoids using a truss system, optimizes the structure, reduces the use of materials, has simple structure and light weight, reduces the cost and lowers the expense;
each part of the invention can be assembled on site in blocks, the installation is convenient, the recovery rate is 100 percent, and the cost is saved;
according to the invention, through the unloading mechanism synchronously used with the bracket, the upper supporting block moves along the inclined plane of the lower supporting block through the adjusting nut, so that the position of the bearing beam is raised or lowered, and the unloading and the installation of the bearing beam are assisted.
Drawings
FIG. 1 is a schematic plan view of a connection-free self-stabilizing large cantilever bent cap support system of the present invention;
FIG. 2 is a schematic perspective view of a connection-free self-stabilizing large cantilever bent cap support system according to the present invention;
FIG. 3 is an enlarged view of a portion of the connection-free, self-stabilizing large cantilever capping beam bracket system of the present invention at location A;
FIG. 4 is an enlarged view of a portion of the connection-free, self-stabilizing large cantilever capping beam bracket system of the present invention at point B;
wherein: 1. spandrel girder, 2, diagonal pole gusset plate, 3, diagonal pole, 4, pole setting gusset plate, 5, pole setting, 6, fine-tuning, 61, nut backing plate, 62, adjusting screw, 63, contact backing plate, 7, unload the mechanism, 71, go up the supporting block, 72, engaging lug board, 73, lower supporting block, 74, base, 75, fixed rod iron, 76, adjusting nut, 8, supporting beam.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which a person skilled in the art can, without any creative effort, fully implement the present invention.
The specific implementation mode of the invention is as follows: as shown in fig. 1-4, a connection-free self-stabilized large cantilever bent cap support system comprises a bearing beam 1, an oblique rod 3, an upright rod 5, a supporting beam 8, a plurality of fine adjustment mechanisms 6 and a plurality of unloading mechanisms 7, wherein the bearing beam 1 is arranged on two sides of a pier body along the length direction of the bent cap and is arranged below the bent cap, an oblique rod gusset plate 2 and an upright rod gusset plate 4 are sequentially arranged at the bottom of a cantilever of the bearing beam 1 from outside to inside, the oblique rod 3 is connected with the bearing beam 1 through the oblique rod gusset plate 2, the upright rod 5 is connected with the bearing beam 1 through the upright rod gusset plate 4, the supporting beam 8 is arranged between the two upright rods 5 on the same side of the pier body along the width direction of the bent cap, the fine adjustment mechanisms 6 comprise adjusting screws 62 and contact base plates 63, a plurality of mounting holes are uniformly arranged on the supporting beam 8, one end of each adjusting screw 62 is fixedly connected with the contact base plates 63, the other end of the unloading mechanism penetrates through the mounting hole to be far away from the pier body, and the unloading mechanisms 7 are uniformly arranged on the pier body at the bottom of the bearing beam 1 and used for supporting the bearing beam 1.
In this embodiment, 3 one ends of down tube are connected through the round pin axle rotation with down tube gusset plate 2, and the other end is connected with 5 bottoms of pole setting.
In this embodiment, the top end of the vertical rod 5 is rotatably connected with the vertical rod gusset plate 4 through a pin shaft.
In this embodiment, nuts are arranged on the adjusting screws 62 on both sides of the supporting beam 8, a nut base plate 61 is arranged between the nuts and the supporting beam 8, and the adjusting screws 62 are screwed, so that the positions of the adjusting screws 62 can be moved to adjust the distance between the contact base plate 63 and the pier body.
In this embodiment, the nut and nut backing plate 61 and the support beam 8 are fixedly connected by welding, so as to further enhance the support performance.
In this embodiment, as shown in fig. 4, the unloading mechanism 7 includes an upper supporting block 71, a connecting lug plate 72, a lower supporting block 73, a base 74, a fixing steel bar 75, and an adjusting nut 76, the fixing steel bar 75 is inserted into a pre-buried hole of the pier body, the base 74, the lower supporting block 73, and the upper supporting block 71 are sequentially erected on the fixing steel bar 75 from bottom to top, the bottom of the upper supporting block 71 and the top of the lower supporting block 73 are both of an inclined plane structure, the upper supporting block 71 can slide on the lower supporting block 73, one side of the lower supporting block 73 is provided with a rectangular connecting lug plate 72, the connecting lug plate 72 is provided with two through holes, the adjusting nut 76 passes through the through holes to be connected with the upper supporting block 71, the bottom of the base 74 is provided with two through grooves, the through grooves have the same size as the diameter of the fixing steel bar 75, the base 74 is clamped on the fixing steel bar 75 through the through grooves, the unloading mechanism 7 can raise or lower the position of, when the position of the bearing beam 1 is moved, the adjusting screw rod 62 can be finely adjusted firstly, so that the contact base plate 63 is far away from the pier body to be conveniently moved, and then the adjusting nut 76 is adjusted, so that the upper supporting block 71 moves along the inclined plane of the lower supporting block 73, thereby realizing the lifting or lowering of the position of the bearing beam 1 and assisting the unloading and installation of the bearing beam.
In this embodiment, the base 74 is a cubic structure, two through grooves are formed in the bottom of the base 74, the size of each through groove is consistent with the diameter of the fixed steel bar 75, and the base 74 is clamped on the fixed steel bar 75 through the through grooves.
In this embodiment, the base 74 includes a top plate and a plurality of ribs, the number of the ribs is three, a cavity is formed between adjacent ribs, and the size of the cavity is the same as that of the fixing steel bar 75.
In this embodiment, a plurality of cross bars are uniformly arranged above the bearing beam 1 to form an operating platform.
The structure of the invention is simple and firm, a triangular stress system is formed by the diagonal rod, the vertical rod and the bearing beam, the contact base plate of the fine adjustment mechanism can be in close contact with the pier body by adjusting the adjusting screw rod, the vertical deformation of the vertical rod is limited, enough support can be provided in the construction process of the bent cap, the deformation and the stress of the cantilever end of the bearing beam are reduced, the bent cap bottom die system can not sink in the construction process of the bent cap, all components of the invention can be assembled on site in blocks, the installation is convenient and the recovery rate is 100%.
While the preferred embodiments of the invention have been described, it is to be understood that the invention is not limited to the precise embodiments described, and that equipment and structures not described in detail are understood to be practiced as commonly known in the art; any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention by those skilled in the art can be made without departing from the technical scope of the present invention, and still fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. A connection-free self-stable large cantilever bent cap support system is characterized by comprising a bearing beam, an inclined rod, a vertical rod, a supporting cross beam, a plurality of fine adjustment mechanisms and a plurality of unloading mechanisms, the bearing beam is arranged at the two sides of the pier body along the length direction of the bent cap, the cantilever bottom of the bearing beam is sequentially provided with an inclined rod gusset plate and a vertical rod gusset plate from outside to inside, the diagonal rods are connected with the bearing beam through diagonal rod gusset plates, the upright rods are connected with the bearing beam through upright rod gusset plates, the supporting beam is arranged between the two upright posts at the same side of the pier body along the width direction of the bent cap, the fine adjustment mechanism comprises an adjusting screw and a contact base plate, evenly be equipped with a plurality of mounting holes on the supporting beam, adjusting screw one end and contact backing plate fixed connection, the other end passes the mounting hole and keeps away from the pier shaft, unload the mechanism of falling and evenly arrange on the pier shaft of spandrel girder bottom.
2. The connection-free large self-stability cantilever bent cap support system according to claim 1, wherein one end of the diagonal rod is rotatably connected with the diagonal rod gusset plate through a pin shaft, and the other end of the diagonal rod is connected with the bottom end of the vertical rod.
3. The connection-free self-stabilizing large cantilever bent cap support system according to claim 2, wherein the top end of the vertical rod and the vertical rod gusset plate are rotatably connected through a pin shaft.
4. The connection-free large self-stability cantilever cover beam support system according to claim 3, wherein nuts are arranged on the adjusting screws on two sides of the supporting cross beam, and nut backing plates are arranged between the nuts and the supporting cross beam.
5. The connection-free large self-stability cantilever cover beam support system according to claim 4, wherein the nut and nut backing plate are fixedly connected with the support cross beam by welding.
6. The connection-free large self-stability cantilever bent cap support system according to claim 5, wherein the unloading mechanism comprises an upper support block, a connecting lug plate, a lower support block, a base, a fixed steel bar and an adjusting nut, the fixed steel bar is arranged on a pre-buried hole of the pier body in a penetrating manner, the base, the lower support block and the upper support block are sequentially erected on the fixed steel bar from bottom to top, the bottom of the upper support block and the top of the lower support block are both of an inclined plane structure, the upper support block can slide on the lower support block, one side of the lower support block is provided with a rectangular connecting lug plate, the connecting lug plate is provided with two through holes, the adjusting nut is connected with the upper support block through the through holes, the bottom of the base is provided with two through grooves, the size of each through groove is consistent with the diameter of the fixed steel bar, and the base is clamped on the fixed steel bar through the through grooves.
7. The connection-free large self-stability cantilever bent cap support system according to claim 6, wherein a plurality of cross bars are uniformly arranged above the bearing beam to form an operation platform.
8. The connection-free large self-stabilizing cantilever bent cap support system according to claim 7, wherein the base is a cubic structure, two through grooves are formed in the bottom of the base, the size of each through groove is consistent with the diameter of the fixed steel bar, and the base is clamped on the fixed steel bar through the through grooves.
9. The connection-free, self-stabilizing, large cantilever capping beam bracket system of claim 7, wherein the base comprises a top plate and a plurality of ribs mounted vertically at the bottom of the top plate.
10. The connection-free self-stabilizing large cantilever cover beam bracket system according to claim 9, wherein the number of the rib plates is three, a cavity is formed between adjacent rib plates, and the size of the cavity is consistent with that of the fixing steel bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010435588.9A CN111441258A (en) | 2020-05-21 | 2020-05-21 | Connection-free self-stability large cantilever bent cap support system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010435588.9A CN111441258A (en) | 2020-05-21 | 2020-05-21 | Connection-free self-stability large cantilever bent cap support system |
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| CN111441258A true CN111441258A (en) | 2020-07-24 |
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| CN202010435588.9A Pending CN111441258A (en) | 2020-05-21 | 2020-05-21 | Connection-free self-stability large cantilever bent cap support system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112813806A (en) * | 2021-01-07 | 2021-05-18 | 安徽仁成建设工程有限公司 | Bridge pier column capping beam formwork system and construction method |
| CN113585082A (en) * | 2021-07-31 | 2021-11-02 | 陈霖 | Pier foundation bridge construction platform |
-
2020
- 2020-05-21 CN CN202010435588.9A patent/CN111441258A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112813806A (en) * | 2021-01-07 | 2021-05-18 | 安徽仁成建设工程有限公司 | Bridge pier column capping beam formwork system and construction method |
| CN113585082A (en) * | 2021-07-31 | 2021-11-02 | 陈霖 | Pier foundation bridge construction platform |
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