CN219080085U - Bridge bent cap pin method support - Google Patents
Bridge bent cap pin method support Download PDFInfo
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- CN219080085U CN219080085U CN202222791314.0U CN202222791314U CN219080085U CN 219080085 U CN219080085 U CN 219080085U CN 202222791314 U CN202222791314 U CN 202222791314U CN 219080085 U CN219080085 U CN 219080085U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
The utility model relates to a bridge capping beam pin method bracket which comprises a pair of pins and brackets, wherein the pins are longitudinally penetrated in reserved holes of bridge piers, and the brackets are symmetrically arranged at the front end and the rear end of the pins; the bracket is provided with a drop block, section steel girders are respectively erected on the drop blocks at the front side and the rear side of the left and right adjacent two piers under each bent cap, a plurality of distribution beams are longitudinally and horizontally arranged on the top surface of the section steel girders, and bottom dies are arranged on the distribution beams; the unloading block comprises an upper wedge block, a lower wedge block, a left wedge block and a right wedge block, the left wedge block and the right wedge block are clamped between the upper wedge block and the lower wedge block, and the left wedge block and the right wedge block are respectively in sliding fit with the upper wedge block and the lower wedge block; the middle parts of the left wedge block and the right wedge block are correspondingly provided with second through holes, finish rolling deformed steel bars penetrate through the left wedge block and the right wedge block, and nuts are screwed at two ends of the finish rolling deformed steel bars respectively. The utility model has high structural strength, simple and convenient operation, effectively avoids the defects of supporting and unloading functions, realizes the reliable supporting and unloading of the bottom die of the bent cap and has good safety.
Description
Technical Field
The utility model relates to the technical field of bridge construction, in particular to a bridge capping beam pin method bracket.
Background
The pin method bracket is one of the bracket types which are more selected in the construction of bridge bent caps, namely pin rods are inserted into pre-buried holes on bridge piers, and a bracket system is erected on the pin method bracket. The utility model discloses a bridge bent cap floor-stand-free support device, which comprises a horizontal embedded pipe fitting, a horizontal support rod piece, a connecting piece and a vertical support piece, wherein the horizontal embedded pipe fitting is used for being embedded in a bridge upright post horizontally, the horizontal support rod piece penetrates through the horizontal embedded pipe fitting, two ends of the horizontal support rod piece are exposed outside, two ends of the horizontal support rod piece are connected with two vertical support pieces through two connecting pieces respectively, and the vertical support piece is used for being arranged below a bridge transverse girder and connected with the bridge transverse girder so as to support the bridge transverse girder. However, the single pin has small stress point, the pin is elastically and inelastically deformed when bearing vertical load, the pressure center is difficult to be completely overlapped with the center of the pin, and accidents are easy to occur due to overturning. In addition, as the unloading device is a sand box, the sand box is easy to harden and the sand discharge port is blocked, so that the unloading is difficult. In the prior art, a mechanical jack is adopted as a landing device, but potential safety hazards exist because the top stress point of the mechanical jack is small, and in the prior art, the main beam and the distribution beam are complicated in patterns, and have multiple patterns such as Bailey beams, section steel and the like, so that modularization and standardization are not realized.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a bridge capping pin method bracket that addresses the above-described issues. The technical scheme of the utility model is as follows:
the bridge bent cap pin method support comprises a pair of pins and brackets, wherein the pins longitudinally penetrate through reserved holes of bridge piers, and the brackets are symmetrically arranged at the front end and the rear end of the pins; the bracket is provided with a drop block, section steel girders are respectively erected on the drop blocks at the front side and the rear side of the left and right adjacent two piers under each capping beam, a plurality of distribution beams are longitudinally and horizontally arranged on the top surface of the section steel girders, and bottom molds are arranged on the distribution beams; the unloading block comprises an upper wedge block, a lower wedge block, a left wedge block and a right wedge block, wherein the left wedge block and the right wedge block are clamped between the upper wedge block and the lower wedge block, and the left wedge block and the right wedge block are respectively in sliding fit with the upper wedge block and the lower wedge block; the middle parts of the left wedge block and the right wedge block are correspondingly provided with second through holes, a finish rolling deformed steel bar penetrates through the left wedge block and the right wedge block, and nuts are screwed at two ends of the finish rolling deformed steel bar respectively.
Further, backing plates are respectively arranged between the left wedge block, the right wedge block and the nuts.
Further, the cross section of the upper wedge block is an inverted trapezoid which is symmetrical left and right, the cross section of the lower wedge block is a trapezoid which is symmetrical left and right, and the cross sections of the left wedge block and the right wedge block are trapezoids which are symmetrical up and down.
Further, the upper inclined walls of the left wedge block and the right wedge block are respectively clung to and in sliding fit with the left inclined wall and the right inclined wall of the upper wedge block, and the lower inclined walls of the left wedge block and the right wedge block are respectively clung to and in sliding fit with the left inclined wall and the right inclined wall of the lower wedge block.
Further, the upper wedge block and the lower wedge block are hollow wedge blocks, and a transverse stiffening block and four longitudinal stiffening blocks are arranged in the inner cavity of the upper wedge block and the lower wedge block respectively; the left wedge block and the right wedge block are hollow wedge blocks, and three transverse and one vertical upright stiffening blocks are arranged in the inner cavity of the hollow wedge block.
Further, the slopes of the left inclined wall and the right inclined wall of the upper wedge block are respectively-1:3 and-1:3, and the slopes of the left inclined wall and the right inclined wall of the lower wedge block are respectively-1:3 and-1:3.
Further, the section steel girder is divided into a front section steel girder and a rear section steel girder, the front section steel girder and the rear section steel girder are connected through two pairs of longitudinal horizontal placing opposite-pulling screws and second nuts, and each pair of opposite-pulling screws is respectively positioned at the left side and the right side of each pier.
Further, the front section steel girder and the rear section steel girder are I-shaped steel, the lengths of the front section steel girder and the rear section steel girder are respectively 100cm beyond the bent cap, and a backing plate is arranged among the front section steel girder, the rear section steel girder and the second nut.
Further, the diameter of the split screw is 20mm.
Further, the distribution beams are 20A I-steel, the distribution beams are equidistantly arranged outside the top surface of the pier, and the center-to-center spacing is 500mm.
The utility model has the advantages and beneficial effects that:
the utility model relates to a pin method bracket for a bridge bent cap, which is characterized in that a pair of pins are inserted into a single bridge pier, and brackets are correspondingly arranged, so that a stress surface is increased, and the overall stability is high. The utility model has the advantages that the structure is high, the operation is simple and convenient, the defects of supporting and unloading functions are effectively avoided, the reliable supporting and unloading of the cover beam bottom die are realized, and the safety is good; structural schemes of the profile steel main beam, the distribution beam and the bottom die are scientifically selected and designed, and efficient and rapid construction of the bent cap is realized.
Drawings
FIG. 1 is a schematic diagram of the front structure of a bridge capping beam pin method bracket of the present utility model;
FIG. 2 is a schematic side view of a bridge capping beam pin method bracket according to the present utility model;
FIG. 3 is a schematic view of the front structure of the pin and bracket of the present utility model;
FIG. 4 is a schematic side view of a pin and bracket according to the present utility model;
FIG. 5 is a schematic diagram of the sliding fit of the left and right wedges with the upper and lower wedges;
FIG. 6 is a schematic perspective view of an upper wedge;
FIG. 7 is a schematic view of a left wedge block perspective;
fig. 8 is a schematic side view of a front section steel girder and a rear section steel girder.
In the figure: 1-pin, 1 a-thread, 1 b-round nut, 1 c-first backing plate, 2-bracket, 2 a-top plate, 2 b-vertical plate, 2 c-side plate, 2 d-reinforcing plate, 2 e-first through hole, 3-drop block, 3 a-upper wedge, 3 b-lower wedge, 3 c-left wedge, 3 d-right wedge, 3 e-finish rolled screw steel, 3 f-left nut, 3f '-right nut, 3 g-second through hole, 3 h-left backing plate, 3h' -right backing plate, 4-shaped steel girder, 4 a-front shaped steel girder, 4 b-rear shaped steel girder, 4 c-counter-pulling screw, 4 d-second nut, 4 e-second backing plate, 5-distributing beam, 6-bottom die.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is evident that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Fig. 1 is a schematic front structural view of a bridge capping beam pin method support provided in an embodiment of the present application, fig. 2 is a schematic side structural view of a bridge capping beam pin method support provided in an embodiment of the present application, and referring to fig. 1 and 2, the bridge capping beam pin method support includes: the two ends of each pin rod are balanced, the diameter of each pin rod 1 is 80mm, the length of each pin rod is greater than the diameter of the pier by 550mm, the two ends of each pin rod 1 are provided with threads 1a, and the single-end length of each thread 1a is 190mm. Round nuts 1b are screwed at two ends of each pin 1, and the round nuts 1b are tightly attached to the reinforcing plate 2d through the first backing plate 1 c. Two brackets 2 are respectively arranged at the front end and the rear end of the pin rod 1, the two brackets 2 are symmetrically and oppositely arranged, and each bracket 2 is provided with a drop-off block 3. Front section steel girders 4a are commonly erected on the unloading blocks 3 on the front sides of the left and right adjacent two piers under each bent cap, and rear section steel girders 4b are commonly erected on the unloading blocks 3 on the rear sides of the left and right adjacent two piers under each bent cap. The top surfaces of the front section steel main beam 4a and the rear section steel main beam 4b are longitudinally and horizontally provided with a plurality of distribution beams 5, the distribution beams 5 are 20A I-steel, the distribution beams 5 are equidistantly arranged outside the top surface of the pier, and the center-to-center distance is 500mm. A bottom die 6 is placed on the distribution beam 5, and the bottom die 6 is a shaping steel template.
Fig. 3 is a schematic diagram of the front structure of the pin and the bracket, and fig. 4 is a schematic diagram of the side structure of the pin and the bracket. Referring to fig. 3 and 4, the bracket 2 comprises a top plate 2a, a vertical plate 2b, a side plate 2c and a reinforcing plate 2d, wherein the top plate 2a, the vertical plate 2b, the side plate 2c and the reinforcing plate 2d are all made of 30mm thick Q235 steel plates, and the joints of the adjacent steel plates are fixed by welding; the top plate 2a is rectangular, and its dimensions are length×width=730 mm×500mm. The vertical plate 2b is rectangular, has a length×width=730 mm×460mm, and the side plate 2c is rectangular trapezoid with dimensions of upper bottom×lower bottom×height=455 mm×230mm×460mm. The reinforcing plate 2d is rectangular and closely attached to the riser 2b, and has dimensions of length×width=532 mm×270mm. A pair of first through holes 2e are correspondingly formed in the vertical plate 2b and the reinforcing plate 2d, and the pair of first through holes 2e correspond to the pier reserved holes and jointly penetrate through the pair of pin rods 1.
Fig. 5 is a schematic diagram showing sliding fit between the left wedge block and the right wedge block with the upper wedge block and the lower wedge block, fig. 6 is a schematic diagram showing a three-dimensional structure of the upper wedge block, and fig. 7 is a schematic diagram showing a three-dimensional structure of the left wedge block. Referring to fig. 5 to 7, the unloading block 3 includes an upper wedge 3a, a lower wedge 3b, a left wedge 3c, and a right wedge 3d, the cross section of the upper wedge 3a is an inverted trapezoid with bilateral symmetry, the cross section of the lower wedge 3b is a trapezoid with bilateral symmetry, the left wedge 3c and the right wedge 3d are sandwiched between the upper wedge 3a and the lower wedge 3b, and the cross sections are all trapezoids with vertical symmetry; the upper inclined walls of the left wedge block 3c and the right wedge block 3d are respectively clung to and in sliding fit with the left inclined wall and the right inclined wall of the upper wedge block 3a, and the lower inclined walls of the left wedge block 3c and the right wedge block 3d are respectively clung to and in sliding fit with the left inclined wall and the right inclined wall of the lower wedge block 3 b; the middle parts of the left wedge block 3c and the right wedge block 3d are correspondingly provided with a second through hole 3g, a finish rolling deformed steel bar 3e is penetrated in the second through hole 3g, the finish rolling deformed steel bar 3e penetrates through the left wedge block 3c and the right wedge block 3d, and the two ends of the finish rolling deformed steel bar are respectively screwed with a left nut 3f and a right nut 3f'; a backing plate 3h is arranged between the left nut 3f and the left wedge block 3c, and a backing plate 3h 'is arranged between the right nut 3f' and the right wedge block 3 d; the upper wedge block 3a and the lower wedge block 3b are hollow wedge blocks, and a transverse upright stiffening block and a longitudinal upright stiffening block are arranged in the inner cavity of each hollow wedge block; the left wedge block 3c and the right wedge block 3d are hollow wedge blocks, and three transverse and one vertical upright stiffening blocks are arranged in the inner cavity of the hollow wedge block; the slopes of the left inclined wall and the right inclined wall of the upper wedge block 3a are respectively-1:3 and-1:3, and the slopes of the left inclined wall and the right inclined wall of the lower wedge block 3b are respectively 1:3 and-1:3; the inverted trapezoid cross section of the upper wedge 3a is 400mm long at the upper bottom, 80mm long at the lower bottom and 68mm high, and the trapezoid cross section of the lower wedge 3b is 80mm long at the upper bottom, 400mm long at the lower bottom and 68mm high; the trapezoid cross section of the left wedge block 3c is 146mm long at the left bottom, 230mm long at the right bottom and 126mm high, and the trapezoid cross section of the right wedge block 3d is 230mm long at the left bottom, 146mm long at the right bottom and 126mm high; the nominal diameter of the finish rolled deformed steel bar 3e is 32mm, and the length is 700mm; the upper wedge 3a, the lower wedge 3b, the left wedge 3c and the right wedge 3d are all made of 20mm thick Q235 steel plates.
Fig. 8 is a schematic side view of a front section steel girder and a rear section steel girder, and referring to fig. 8, the front section steel girder 4a and the rear section steel girder 4b are arranged in parallel and transversely and have the same length and model specification; the front section steel girder 4a and the rear section steel girder 4b are jointly penetrated with two pairs of longitudinal horizontal opposite-pulling screws 4c, the nominal diameter of each opposite-pulling screw 4c is 20mm, the front end and the rear end are respectively provided with a second nut 4d, the second nuts 4d are tightly attached to the front section steel girder 4a and the rear section steel girder 4b through a backing plate 4e, and each pair of opposite-pulling screws 4c are respectively positioned on the left side and the right side of each pier. The front section steel main beam 4a and the rear section steel main beam 4b are I-shaped steel, the lengths of the front section steel main beam 4a and the rear section steel main beam are respectively 100cm beyond the bent cap, and the specific model is determined according to the stress checking calculation.
The bridge bent cap pin method support provided by the embodiment is simple in structure, the stress of the support is clear and definite, and through scientific design of pin, bracket, unloading block, main beam, distribution beam and bottom die scheme, the support is supported and unloaded simply, conveniently and safely, modularly and standardized, and the risk in bent cap construction is effectively reduced.
The mounting process of the capping beam bracket in the embodiment is as follows:
firstly, pre-burying reserved holes of pin rods 1 according to calculated positions, penetrating the pin rods 1 one by one, installing brackets 2, and locking round nuts 1b one by one to fix the round nuts; secondly, mounting a landing block 3 on the bracket 2, adjusting the landing block 3 to a design elevation, and synchronously screwing and screwing a left nut 3f and a right nut 3f' at two ends of the finish rolling screw thread steel 3e inwards; then, a section steel girder 4 is placed on the unloading block 3, a counter-pulling screw 4c between the front section steel girder 4a and the rear section steel girder 4b is installed, and second nuts 4d at two ends are symmetrically screwed and twisted, so that the section steel girder 4 is abutted against the front side and the rear side of the bridge pier; finally, a distribution beam 5 and a bottom die 6 are arranged on the profile steel main beam 4.
The procedure of unloading the capping beam bracket in the embodiment is as follows:
firstly, synchronously screwing and loosening second nuts 4d at two ends of a counter-pulling screw between a front-type steel girder 4a and a rear-type girder 4b, and releasing the limit of a pier on the front-type steel girder 4a and the rear-type girder 4 b; secondly, synchronously screwing a left nut 3f and a right nut 3f' at two ends of the finish rolling screw steel 3e outwards, and enabling a left wedge block 3c and a right wedge block 3d to move outwards to drive an upper wedge block 3a to move downwards along a notch, so that a front section steel main beam 4a, a rear section steel main beam 4b, a distribution beam 5, a bottom die 6 and the like are driven to move downwards, and a cover beam bottom die 6 is separated from cover beam concrete and a gap with a certain interval is formed; finally, the bottom die 6, the distribution beam 5, the front section steel main beam 4a, the rear section steel main beam 4b, the unloading block 3, the bracket 2, the pin rod 1 and the like are sequentially removed from top to bottom.
The foregoing examples have shown only the preferred embodiments of the utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. The utility model provides a bridge bent cap pin method support, includes cotter (1) and bracket (2), its characterized in that: the pin rods (1) are a pair and longitudinally penetrate through reserved holes of the bridge piers, and the corbels (2) are symmetrically arranged at the front end and the rear end of the pin rods (1); the bracket (2) is provided with a drop block (3), section steel main beams (4) are respectively erected on the drop blocks (3) at the front side and the rear side of the left and right adjacent two piers below each cover beam, a plurality of distribution beams (5) are longitudinally and horizontally arranged on the top surface of the section steel main beams (4), and bottom dies (6) are arranged on the distribution beams (5); the unloading block (3) comprises an upper wedge block (3 a), a lower wedge block (3 b), a left wedge block (3 c) and a right wedge block (3 d), wherein the left wedge block and the right wedge block are clamped between the upper wedge block and the lower wedge block, and the left wedge block and the right wedge block are respectively in sliding fit with the upper wedge block and the lower wedge block; the middle parts of the left wedge block and the right wedge block are correspondingly provided with second through holes (3 g), a finish rolling deformed steel bar (3 e) is arranged in the second through holes (3 g) in a penetrating mode, and the finish rolling deformed steel bar (3 e) penetrates through the left wedge block and the right wedge block and nuts are screwed at two ends of the left wedge block and the right wedge block respectively.
2. The bridge capping pin method bracket according to claim 1, wherein: backing plates are respectively arranged between the left wedge block, the right wedge block and the nuts.
3. The bridge capping pin method bracket according to claim 1, wherein: the cross section of the upper wedge block (3 a) is an inverted trapezoid which is symmetrical left and right, the cross section of the lower wedge block (3 b) is a trapezoid which is symmetrical left and right, and the cross sections of the left wedge block (3 c) and the right wedge block (3 d) are trapezoids which are symmetrical up and down.
4. A bridge capping beam pin method bracket according to claim 3, wherein: the upper inclined walls of the left wedge block (3 c) and the right wedge block (3 d) are respectively in close fit and sliding fit with the left inclined wall and the right inclined wall of the upper wedge block (3 a), and the lower inclined walls of the left wedge block (3 c) and the right wedge block (3 d) are respectively in close fit and sliding fit with the left inclined wall and the right inclined wall of the lower wedge block (3 b).
5. A bridge capping pin method bracket according to any one of claims 1 to 4, wherein: the upper wedge block and the lower wedge block are hollow wedge blocks, and a transverse upright stiffening block and four longitudinal upright stiffening blocks are arranged in the inner cavity of the upper wedge block and the lower wedge block; the left wedge block and the right wedge block are hollow wedge blocks, and three transverse and one vertical upright stiffening blocks are arranged in the inner cavity of the hollow wedge block.
6. The bridge capping beam pin method bracket according to claim 5, wherein: the slopes of the left inclined wall and the right inclined wall of the upper wedge block (3 a) are respectively-1:3 and-1:3, and the slopes of the left inclined wall and the right inclined wall of the lower wedge block (3 b) are respectively-1:3 and-1:3.
7. The bridge capping pin method bracket according to claim 1, wherein: the section steel girder (4) is divided into a front section steel girder (4 a) and a rear section steel girder (4 b), the front section steel girder (4 a) is connected with the rear section steel girder (4 b) through two pairs of longitudinal horizontal opposite-pulling screw rods (4 c) and second nuts (4 d), and each pair of opposite-pulling screw rods (4 c) is respectively positioned on the left side and the right side of each pier.
8. The bridge capping beam pin method bracket of claim 7, wherein: the front section steel main beam (4 a) and the rear section steel main beam (4 b) are I-shaped steel, the lengths of the front section steel main beam (4 a) and the rear section steel main beam (4 b) are respectively 100cm beyond the bent cap, and a base plate (4 e) is arranged between the front section steel main beam (4 a) and the rear section steel main beam (4 b) and the second nut (4 d).
9. The bridge capping beam pin method bracket of claim 7, wherein: the diameter of the opposite-pulling screw rod (4 c) is 20mm.
10. The bridge capping beam pin method bracket according to claim 1, wherein the distribution beams (5) are 20A i-steel, the distribution beams (5) are equidistantly arranged outside the pier top surface, and the center-to-center spacing is 500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222791314.0U CN219080085U (en) | 2022-10-21 | 2022-10-21 | Bridge bent cap pin method support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222791314.0U CN219080085U (en) | 2022-10-21 | 2022-10-21 | Bridge bent cap pin method support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219080085U true CN219080085U (en) | 2023-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222791314.0U Active CN219080085U (en) | 2022-10-21 | 2022-10-21 | Bridge bent cap pin method support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219080085U (en) |
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2022
- 2022-10-21 CN CN202222791314.0U patent/CN219080085U/en active Active
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