CN212612024U - Bracket system for construction of thin-wall pier long cantilever bent cap - Google Patents
Bracket system for construction of thin-wall pier long cantilever bent cap Download PDFInfo
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- CN212612024U CN212612024U CN202021234307.5U CN202021234307U CN212612024U CN 212612024 U CN212612024 U CN 212612024U CN 202021234307 U CN202021234307 U CN 202021234307U CN 212612024 U CN212612024 U CN 212612024U
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Abstract
The utility model relates to a long cantilever bent cap construction bracket system of thin wall mound belongs to bridge construction field. The bracket system comprises two supporting structures positioned on the left side and the right side of the pier stud, the upper parts of the two supporting structures are correspondingly connected through an upper horizontal pull rod, the lower parts of the two supporting structures are correspondingly connected through a lower horizontal pull rod, and the supporting structures are fixedly connected with the pier stud through a supporting shaft and an anchoring part. The bracket system can support all loads through a small amount of embedded parts and supporting parts, and the performance of materials is fully exerted. Simple structure, the atress is clear and definite, and installation, demolish the convenience, can improve installation rate and quality greatly, overcome prior art's defect.
Description
Technical Field
The utility model belongs to bridge construction field, concretely relates to long cantilever bent cap construction bracket system of thin wall mound.
Background
The long cantilever bent cap is constructed in a cast-in-place mode, and the construction quality and the construction process are influenced by a bracket system. The embedded part of the conventional bracket system applied at present is complex in structure, and the construction weight of the truss is large, so that the conventional bracket system is not suitable for thin-wall piers. In addition, the structure is complex, so that not only is the construction operation inconvenient, but also the problems of high construction cost and high labor intensity of workers are caused.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a long cantilever bent cap construction bracket system of thin wall mound is become through simplifying the structure to reduce engineering cost and workman's intensity of labour.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a bracket system for constructing a thin-wall pier long cantilever capping beam comprises a supporting structure, wherein the supporting structure mainly comprises an upper chord member, a lower chord member, a diagonal draw member I, an inclined strut and a horizontal connecting rod; the upper chord, the lower chord and the diagonal draw I are respectively provided with two groups and correspondingly form two triangular supports, the diagonal supports are arranged in the triangular supports, two ends of each diagonal support are correspondingly connected to the upper chord and the diagonal draw I, the two groups of triangular supports are arranged in parallel, and the two upper chords are connected into a whole through a plurality of horizontal connecting rods arranged at intervals; the support structures are divided into two groups, which are respectively arranged on the left side and the right side of the pier column.
The left side and the right side of the pier stud are respectively and correspondingly provided with a supporting shaft used for connecting a supporting structure, the two supporting shafts penetrate through the pier stud, two ends of each supporting shaft correspondingly extend out of the front end face and the rear end face of the pier stud, and the pivot ends of the two upper chords in each supporting structure are correspondingly arranged on the two ends of the supporting shaft.
An upright rod is correspondingly hinged above the pivot end of each upper chord in each supporting structure, and an inclined pull rod II is arranged between the upright rod and the upper chord to form a triangular structure.
And each lower chord in each supporting structure is positioned at the end head side of the fulcrum of the upper chord, and the lower end of each lower chord is fixed on the pier stud through an anchoring part.
The upright rods positioned on the left side of the pier column and the upright rods positioned on the right side of the pier column are connected in a one-to-one correspondence mode through the upper horizontal pull rods, and the lower chord rods positioned in the supporting structure on the left side of the pier column and the lower chord rods positioned in the supporting structure on the right side of the pier column are connected in a one-to-one correspondence mode through the lower horizontal pull rods.
Furthermore, an anti-bending box is arranged between each upper chord and the pier stud, the anti-bending box mainly comprises a steel plate and a seamless steel pipe, the steel plate is welded on the end face of the seamless steel pipe, and a reinforcing rubber pad is arranged on one side of the steel plate, which is in contact with the pier stud.
Furthermore, each upper chord and each lower chord are channel steel, wherein the upper chord is 28a channel steel, and the lower chord and the diagonal brace are 16a channel steel.
Further, the horizontal connecting rod comprises a sleeve, screw rods and a connecting seat, the sleeve is of a tubular structure, two sections of threads with opposite rotating directions are correspondingly arranged at two ends of the inner wall of the sleeve, the two screw rods are correspondingly and rotatably arranged at two ends of the sleeve, and tail ends of the two screw rods are correspondingly arranged on the two upper chords which are arranged in parallel through the connecting seat.
Furthermore, the support shaft is a steel bar with nuts at two ends.
Furthermore, the diagonal draw bars II are finish-rolled deformed steel bar draw bars, and two ends of each diagonal draw bar II are correspondingly and rotatably connected with the vertical rod and the upper chord through steering heads.
Furthermore, a plurality of distribution beams are arranged on the upper end faces of the two upper chords in each supporting structure in parallel, and the distribution beams are I-shaped steel.
Furthermore, the upper horizontal pull rod and the lower horizontal pull rod are both finish-rolled deformed steel bars.
The beneficial effects of the utility model reside in that:
(1) the bracket system has the advantages of simple structure, clear stress and convenient installation and removal.
(2) The bracket system has the advantages that the components are easy, convenient and quick to process, and the industrial processing production can be realized.
(3) The bracket system overcomes the defects of the prior art, meets various mechanical properties of the bent cap support, can support all loads through a small amount of embedded parts and supporting pieces, and fully exerts the performance of materials.
(4) The risk of high-altitude operation of workers is reduced, the operation of the workers is easy, and the mounting speed and the mounting quality can be greatly improved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a structural elevation view of the present invention;
FIG. 2 is a plan view of the structure of the present invention;
fig. 3 is a schematic structural view of the bending-resistant box.
Reference numerals:
the device comprises a supporting structure 1, a pier stud 2, a supporting shaft 3, a vertical rod 4, a diagonal draw bar II 5, an anchoring part 6, an upper horizontal draw bar 7, a lower horizontal draw bar 8, a bending-resistant box 9 and a fulcrum end A;
in the support structure: the upper chord 101, the lower chord 102, the diagonal draw bar I103, the diagonal brace 104, the horizontal connecting rod 105 and the distribution beam 106;
in the bending-resistant box: a steel plate 901, a seamless steel pipe 902 and a reinforced rubber pad 903;
in the horizontal connecting rod: sleeve 1051, screw 1052, connecting seat 1053.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to fig. 1 to 3, a bracket system for constructing a thin-wall pier long cantilever capping beam comprises a support structure 1, which mainly comprises an upper chord 101, a lower chord 102, a diagonal draw bar i 103, an inclined strut 104 and a horizontal connecting rod 105; the upper chord 101, the lower chord 102 and the diagonal draw bars I103 are respectively provided with two groups, one upper chord 101, one lower chord 102 and one diagonal draw bar I103 are in one group and correspondingly form a triangular support, and the supporting structure 1 is provided with two triangular supports in total; in order to ensure the structural stability of the triangular supports, inclined struts 104 are arranged in the two triangular supports, two ends of each inclined strut 104 are correspondingly connected to the upper chords 101 and the diagonal draw bar I103, the two groups of triangular supports are arranged in parallel, and the two upper chords 101 are connected into a whole through a plurality of (at least two) horizontal connecting rods 105 which are arranged at intervals; in the bracket system, two groups of supporting structures 1 are arranged on the left side and the right side of a pier column 2 in a symmetrical mode.
The left side and the right side of the pier stud 1 are respectively provided with a supporting shaft 3 used for being connected with the supporting structure 1, the two supporting shafts 3 are arranged in a mode of penetrating through the pier stud, the penetrating direction is perpendicular to the left and right directions of the pier stud, namely, the two ends of the supporting shaft 3 correspondingly extend out of the front end face and the rear end face of the pier stud 2, the pivot ends A of the two upper chords in the supporting structure 1 on the left side of the pier stud are correspondingly arranged on the two ends of the supporting shaft on the left side, correspondingly, the pivot ends A of the two upper chords in the supporting structure 1 on the right side of the pier stud are correspondingly arranged on the two ends of the supporting shaft on the right side, and the other ends of the upper chords in the two supporting structures 1 are suspended in a.
In the bracket system, four upright rods are correspondingly arranged on four upper chords 101 in two supporting structures 1, the four upright rods are respectively arranged at the left side and the right side of the front end surface and the rear end surface of a pier column, and a diagonal draw bar II 5 is correspondingly arranged between each upright rod and each upper chord to form a triangular structure.
In this bracket system, four lower chords 102 in two support structures are located at the fulcrum end sides of four upper chords 101 (i.e., close to the left and right sides of the pier), the lower ends of two lower chords 102 located at the left side of the pier are fixed to the left side of the pier through an anchoring member, and the lower ends of two lower chords 102 located at the right side of the pier are fixed to the right side of the pier 2 through an anchoring member 6.
Two uprights 4 located on the left side of the pier stud 2 are connected with two uprights located on the right side of the pier stud in a one-to-one correspondence manner through upper horizontal pull rods 7, and two lower chords 102 located in the supporting structure on the left side of the pier stud are connected with two lower chords located in the supporting structure 1 on the right side of the pier stud in a one-to-one correspondence manner through lower horizontal pull rods 8.
In the bracket system, a support shaft 3 is inserted into a shaft hole prefabricated on a pier stud, the upper end of a support structure 1 is connected with the support shaft 3 through an upper chord, and the connecting end is used as an upper fulcrum; correspondingly, the anchor points between the lower chords and the pier studs serve as lower pivot points, and at the moment, the two support structures are fixed on the pier studs. And the upright 4, the diagonal draw bar II 5 and the upper horizontal pull rod 7 which are arranged above the upper chord are used as an upper force decomposition and transmission system so as to reduce the problem of overlarge deformation caused by overlarge cantilever bracket.
This bracket system is through oblique pull rod II 5, last horizontal pull rod 7 and pole setting 4, with 1 distal end portion load conduction of bearing structure to back shaft 3 on, the last horizontal pull rod 7 that 4 tops of pole setting set up can be as an organic whole with the upper portion force decomposition system connection of pier stud left and right sides, has promoted structural space's stability. Except that the shaft hole for inserting the support shaft 3 is prefabricated, other structures are installed on the bent cap steel bar and then are finished before concrete is poured. The material consumption of part of the structure is light, the installation is convenient, and the mechanical property of the material is fully exerted.
In order to ensure that the upper chords 101 are closely attached to the concrete pier bodies of the pier studs 2, the scheme is further improved, bending-resistant boxes 9 are arranged between the upper chords 101 and the pier studs 2, each bending-resistant box 9 mainly comprises a steel plate 901 and a seamless steel pipe 902, the steel plates 901 are welded on one end faces of the seamless steel pipes 902, and reinforcing rubber pads 903 are arranged on the steel plates 901 on the sides, which are in contact with the pier studs 2, of the steel plates 901. The bending-resistant box 9 is sleeved at the end of the support shaft 3 and is clamped between the upper chord 101 and the concrete pier body of the pier stud 2, when the upper chord 101 is locked on the support shaft through a fastener (nut), the upper chord 101, the bending-resistant box 9 and the pier stud 2 of the support structure 1 can be tightly attached, so that the bending moment of the support shaft 3 caused by the long cantilever is eliminated, and the support shaft 3 only bears the shearing force. A reinforced rubber pad 903 is arranged on the inner surface (the surface contacting with the concrete pier body) of the steel plate 901, and the frictional resistance between the steel plate and the surface of the pier body can be increased after a fastener (a nut) is fastened.
In this embodiment, each upper chord 101 and each lower chord 102 are channel steel, wherein the upper chord is 28a channel steel, and the lower chord and the brace are 16a channel steel.
In this embodiment, the horizontal connecting rod 105 includes a sleeve 1051, screws 1052 and a connecting seat 1053, the sleeve 1051 is a tubular structure, and the inner wall of the sleeve 1051 is provided with two threads with opposite turning directions, the two threads respectively occupy one end of the sleeve, the two screws 1052 are correspondingly screwed at two ends of the sleeve 1051, the tail ends of the two screws 1052 are correspondingly mounted on the two upper chords 101 arranged in parallel through the connecting seat 1053, and the screws and the connecting seat 1053 are connected by pins. The horizontal connecting rod 105 is of an adjusting screw type, can realize factory processing, and can realize adjustment of the extension/retraction length of the screw through rotating the sleeve so as to adapt to size deviation caused by installation errors of different pier widths and fine structures.
In this embodiment, the support shaft 3 is a steel rod with nuts at both ends. The diagonal draw bars II 5 are finish-rolled deformed steel bar draw bars, and two ends of each diagonal draw bar II 5 are correspondingly and rotatably connected with the vertical rod 4 and the upper chord 101 through steering heads so as to adapt to adjustment of the upper horizontal draw bar 7. The upper horizontal pull rod 7 and the lower horizontal pull rod 8 are both finish-rolled deformed steel bars. The lower horizontal tie rod 8 in this embodiment is designed to be integral with the anchoring point at the lower end of the lower chord 102, and the finish-rolled deformed steel bar at the lower fulcrum can be connected after the support structure 1 is installed in place.
The upper end surfaces of the two upper chords 101 in the two support structures 1 are provided with a plurality of distribution beams 106 in parallel, the distribution beams are I-shaped steel, and the specific number of distribution amount can be calculated and set according to load.
The mounting process of the bracket system comprises the following steps:
(1) the shaft hole that is used for cartridge back shaft 3 is reserved when pier stud 2 pours, and the accessible penetrates the sleeve pipe and ensures that the shaft hole that reserves meets the demands, and two sleeve pipes are fixed during the construction, ensure that relative position relation and position are accurate.
(2) The buckling-resistant box 9 and the triangular supports in each support structure 1 are mounted, nuts at both ends of the support shaft 3 are fastened, and after the triangular supports are mounted in place, the horizontal connecting rods 105 are mounted so as to be in a tight connection state.
(3) And installing the lower horizontal pull rod 8, adjusting the horizontal connecting rod 105 for the second time to enable each rod structure to be in a stressed state, and adjusting the lower horizontal pull rod 8 to enable the stress to be not more than 100 KN.
(4) And installing a distribution beam and a bottom die system, installing an upper force decomposition and conduction system, and entering a support for prepressing after the inspection is qualified.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a long cantilever bent cap construction bracket system of thin wall mound which characterized in that: the support structure mainly comprises an upper chord, a lower chord, a diagonal draw bar I, an inclined strut and a horizontal connecting rod; the upper chord, the lower chord and the diagonal draw I are respectively provided with two groups and correspondingly form two triangular supports, the diagonal supports are arranged in the triangular supports, two ends of each diagonal support are correspondingly connected to the upper chord and the diagonal draw I, the two groups of triangular supports are arranged in parallel, and the two upper chords are connected into a whole through a plurality of horizontal connecting rods arranged at intervals; the two groups of supporting structures are respectively arranged on the left side and the right side of the pier column;
the left side and the right side of the pier stud are respectively and correspondingly provided with a supporting shaft used for connecting a supporting structure, the two supporting shafts penetrate through the pier stud, two ends of each supporting shaft correspondingly extend out of the front end face and the rear end face of the pier stud, and the fulcrum ends of the two upper chords in each supporting structure are correspondingly arranged on the two ends of the supporting shafts;
upright rods are correspondingly hinged above the pivot ends of the upper chords in the supporting structures, and diagonal draw bars II are arranged between the upright rods and the upper chords to form a triangular structure;
each lower chord in each supporting structure is positioned at the end side of the fulcrum of the upper chord, and the lower end of each lower chord is fixed on the pier stud through an anchoring part;
the upright rods positioned on the left side of the pier column and the upright rods positioned on the right side of the pier column are connected in a one-to-one correspondence mode through the upper horizontal pull rods, and the lower chord rods positioned in the supporting structure on the left side of the pier column and the lower chord rods positioned in the supporting structure on the right side of the pier column are connected in a one-to-one correspondence mode through the lower horizontal pull rods.
2. The thin wall pier long cantilever capping beam construction bracket system of claim 1, wherein: and a bending-resistant box is arranged between each upper chord and the pier stud, the bending-resistant box mainly comprises a steel plate and a seamless steel pipe, the steel plate is welded on the end face of the seamless steel pipe, and a reinforcing rubber pad is arranged on one side of the steel plate, which is in contact with the pier stud.
3. The thin wall pier long cantilever capping beam construction bracket system of claim 1, wherein: each upper chord and each lower chord are channel steel, wherein the upper chord is 28a channel steel, and the lower chord and the inclined strut are 16a channel steel.
4. The thin wall pier long cantilever capping beam construction bracket system of claim 1, wherein: the horizontal connecting rod comprises a sleeve, screws and a connecting seat, the sleeve is of a tubular structure, two sections of threads with opposite rotating directions are correspondingly arranged at two ends of the inner wall of the sleeve, the two screws are correspondingly and rotatably arranged at two ends of the sleeve, and tail ends of the two screws are correspondingly arranged on two upper chords which are arranged in parallel through the connecting seat.
5. The thin wall pier long cantilever capping beam construction bracket system of claim 1, wherein: the support shaft is a steel bar with nuts at two ends.
6. The thin wall pier long cantilever capping beam construction bracket system of claim 1, wherein: and the two ends of each inclined pull rod II are correspondingly and rotatably connected with the vertical rod and the upper chord through steering heads.
7. The thin wall pier long cantilever capping beam construction bracket system of claim 1, wherein: and a plurality of distribution beams are arranged on the upper end surfaces of the two upper chords in each supporting structure in parallel, and the distribution beams are I-shaped steel.
8. The thin wall pier long cantilever capping beam construction bracket system of claim 1, wherein: the upper horizontal pull rod and the lower horizontal pull rod are both finish-rolled deformed steel bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021234307.5U CN212612024U (en) | 2020-06-29 | 2020-06-29 | Bracket system for construction of thin-wall pier long cantilever bent cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021234307.5U CN212612024U (en) | 2020-06-29 | 2020-06-29 | Bracket system for construction of thin-wall pier long cantilever bent cap |
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| CN212612024U true CN212612024U (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021234307.5U Active CN212612024U (en) | 2020-06-29 | 2020-06-29 | Bracket system for construction of thin-wall pier long cantilever bent cap |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114657882A (en) * | 2022-03-25 | 2022-06-24 | 南通大学 | Super-huge type 0# block cast-in-place box girder bracket structure and mounting method thereof |
| CN114808667A (en) * | 2022-05-30 | 2022-07-29 | 中建七局交通建设有限公司 | Supporting structure suitable for No. 0 block of rigid frame bridge and construction method of supporting structure |
| CN115012309A (en) * | 2022-05-20 | 2022-09-06 | 中建八局第二建设有限公司 | Overhead supporting device for large cantilever bent cap and construction method |
-
2020
- 2020-06-29 CN CN202021234307.5U patent/CN212612024U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114657882A (en) * | 2022-03-25 | 2022-06-24 | 南通大学 | Super-huge type 0# block cast-in-place box girder bracket structure and mounting method thereof |
| CN115012309A (en) * | 2022-05-20 | 2022-09-06 | 中建八局第二建设有限公司 | Overhead supporting device for large cantilever bent cap and construction method |
| CN114808667A (en) * | 2022-05-30 | 2022-07-29 | 中建七局交通建设有限公司 | Supporting structure suitable for No. 0 block of rigid frame bridge and construction method of supporting structure |
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