CN205369057U - A from lock bracket that is used for two high mounds of wall formula - Google Patents

Abstract

The utility model discloses a self-locking bracket for a double-wall high pier, which comprises: upper and lower embedded parts and corbel units pre-buried on the top of the double-wall high pier. The upper embedded box of the upper embedded part is welded together with the upper embedded longitudinal beam through the first steel pipe; the lower embedded box of the lower embedded part is welded together with the lower embedded brace through the second steel pipe; The unit's double-stretched and finished-rolled threaded steel bar passes through the first steel pipe and connects the corbel flat beams on both sides of the double-walled high pier, and the foot-protecting finished-rolled threaded steel bar passes through the second steel pipe. Compared with the prior art, the self-locking bracket for double-wall high piers disclosed by the utility model has simple construction and strong safety. Each embedded part can be processed in a factory and installed on site. It can be directly used in the suspension casting construction of the hanging basket, and can be used in the cast-in-place construction of the side span after the construction of the corbel, which realizes the turnover and versatility of the bracket material, saves costs, fast construction speed, can greatly improve work efficiency, and can also ensure construction safety .

Description

A self-locking bracket for double-wall high piers

technical field

The utility model relates to the field of bridge construction, in particular to a self-locking bracket used for double-wall high piers.

Background technique

With the development of my country's infrastructure construction, super high buildings are springing up like bamboo shoots after rain, and the construction of expressway bridges has been transferred to mountainous areas, where the terrain is complex, the bridge piers are high and the spans are large. The upper structure of the bridge is generally cast by cantilever. The construction of the first section (block 0#) of the high pier cantilevered is the key and difficult point of the construction. It cannot be constructed by the traditional support method, and the corbel bracket method can only be used for construction. There are also many bracket schemes in construction, and it is difficult to achieve safety, speed, and universal and turnover utilization of materials. Unnecessary materials and resources are wasted during construction, a lot of manpower, material resources and construction time are consumed, and construction safety risks are also relatively large, especially the corbel brackets of double-walled high piers, which increase the first suspension The construction difficulty and construction safety risks of pouring sections.

Utility model content

1. Technical problems to be solved

The purpose of the utility model is to provide a self-locking bracket for double-wall high piers, which can speed up the construction progress, reduce construction safety risks, save costs and realize the versatility and turnover of bracket materials.

2. Technical solution

A self-locking bracket for a double-wall high pier, which includes: an upper embedded part, a lower embedded part and a corbel unit, the upper embedded part is pre-embedded on the top of a double-walled high pier, and the upper embedded The parts include the upper pre-embedded longitudinal beam, the upper pre-embedded box and the first steel pipe; wherein, the upper pre-embedded longitudinal girder is a single I-beam with end plates welded at both ends, and the two sides of the web of each upper pre-embedded longitudinal girder pass through The longitudinal beam is equipped with fine-rolled threaded steel bars; the upper embedded box is welded together with the upper embedded longitudinal beam through the first steel pipe; The embedded parts include the lower embedded brace, the lower embedded box and the second steel pipe; wherein, the lower embedded brace is a single I-beam, and the lower embedded box is welded to the lower embedded brace through the second steel pipe and the lower embedded brace. together; between the upper pre-embedded longitudinal beam and the lower pre-embedded strut, there is a "herringbone" shaped oblique bar for supporting the upper pre-embedded longitudinal girder; the corbel unit is installed at the upper pre-embedded box, and the corbel unit includes Finish-rolled threaded steel bars, foot guards finished-rolled threaded steel bars, corbel flat beams, diagonal braces, parallel trusses and slanted trusses; among them, the pair-drawn finish-rolled threaded bars pass through the first steel pipe to connect the double-wall type For the corbel flat beams on both sides of the high pier, the foot-protecting fine-rolled threaded steel bars pass through the second steel pipe, the end of the corbel flat beam is inserted into the upper embedded box for supporting the end, and the middle part of the corbel flat beam passes through The pins are connected with the diagonal braces, and the lower ends of the diagonal braces are inserted into the lower embedded box, and the two corbel units are connected into a whole through the parallel girders and the oblique girders.

Preferably, the upper embedded longitudinal beam of the upper embedded part is a single I40a I-beam.

Preferably, the lower embedded strut of the lower embedded part is a single I40a I-beam.

Preferably, the middle part of the corbel flat beam is connected to the diagonal brace through a φ50 pin.

Preferably, four longitudinal beam finish-rolled threaded steel bars are pierced on both sides of the web plate of each upper pre-embedded longitudinal beam.

Preferably, the finish-rolled rebar for the longitudinal beam is a φ32 finish-rolled rebar.

Preferably, a prestress of 200kN is stretched for each longitudinal girder finish-rolled rebar.

3. Beneficial effect

The beneficial effect of the utility model is that, compared with the prior art, the self-locking bracket for the construction of double-walled high piers made by the technical scheme of the utility model is based on the characteristics of the force, and fully considers the use of the hanging basket bracket Materials, strive for the versatility and turnover of materials, use the hanging basket components directly on the brackets, and at the same time use them commonly on the cast-in-place brackets of the side spans. The embedded parts and the corbel unit of the bracket are composed of multiple components. Each component is factory-processed at the factory and assembled directly on site to improve construction efficiency, speed up construction progress, reduce construction costs, and reduce safety risks. It solves the problems that the 0# block material and the hanging basket construction of the high pier cantilever construction cannot be used universally, and the safety risk of the 0# block construction bracket of the high pier is relatively large, and the construction is difficult.

Description of drawings

Fig. 1 is a schematic view along the bridge of a self-locking bracket for a double-walled high pier constituted according to a preferred embodiment of the present invention;

Fig. 2 is a schematic diagram of the transverse bridge direction of a self-locking bracket for a double-walled high pier constituted according to a preferred embodiment of the present invention;

Fig. 3 is a schematic diagram of an upper embedded box for a self-locking bracket of a double-walled high pier according to a preferred embodiment of the present invention;

Fig. 4 is a structural diagram of a lower embedded box for a self-locking bracket for a double-walled high pier according to a preferred embodiment of the present invention.

In the figure: 1-double-wall high pier; 2-upper embedded longitudinal beam; 3-upper embedded box; 4-first steel pipe; -Lower pre-embedded box; 8-Second steel pipe; 9-Fine-rolled threaded steel bar for foot protection; 10-"Herringbone" shaped oblique rod; 11-Corb flat beam; Flat trusses; 15-oblique trusses.

detailed description

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. According to these detailed descriptions, those skilled in the art can clearly understand the present invention and implement the present invention. Without departing from the principle of the utility model, the features in different embodiments can be combined to obtain new implementations, or some features in certain embodiments can be replaced to obtain other preferred implementations.

Referring to Figures 1 and 2, Figures 1 and 2 are a self-locking bracket for a double-walled high pier constructed according to a preferred embodiment of the present invention, which includes: an upper embedded part, a lower embedded part and a The crossbeams supported on it form the corbel unit of the supporting platform.

The upper embedded part is pre-embedded on the top of the double-wall high pier 1, and the upper embedded part includes the upper embedded longitudinal beam 2, the upper embedded box 3 and the first steel pipe 4; wherein, the upper embedded longitudinal beam 2 is two ends A single I-beam welded with an end plate, the two sides of the web of each upper pre-embedded longitudinal beam 2 are pierced with longitudinal beam finish-rolled threaded steel bars; the upper pre-embedded box 3 passes through the first steel pipe 4 and the upper pre-embedded longitudinal beam 2 welded together.

The lower embedded part is pre-embedded on the top of the double-wall high pier 1, below the upper embedded part, and the lower embedded part includes the lower embedded strut 6, the lower embedded box 7 and the second steel pipe 8; wherein, the lower The embedded strut 6 is a single I-beam, which is used to balance the horizontal force of the corbel unit on the double-walled high pier. The lower embedded box 7 is welded together with the lower embedded strut 6 through the second steel pipe 8 .

Referring to Figures 3 and 4, the upper and lower pre-embedded boxes are all made of steel plates and processed directly in the factory, which is convenient for factory operations and has high processing accuracy, while not taking up construction time on the bridge. Moreover, the upper and lower pre-embedded boxes are welded into a whole through steel pipes, which can be welded in factories or under bridges, which is convenient for construction, and can greatly improve the accuracy of pre-embedded boxes during pre-embedding.

Between the upper pre-embedded longitudinal beam 2 and the lower pre-embedded strut 6, a "herringbone" shaped diagonal bar 10 for supporting the upper pre-embedded longitudinal girder 2 is arranged, so that the upper pre-embedded longitudinal beam 2 and the lower pre-embedded strut 6 form a whole Forced to balance the force of the corbel unit.

The corbel unit is installed at the upper pre-embedded box 3, and the corbel unit includes the opposite-drawing finish-rolled threaded steel bar 5, the foot guard finish-rolled threaded steel bar 9, the corbel flat beam 11, the diagonal brace 12, the parallel truss piece 14 and Obliquely connected trusses 15; wherein, the pair of drawn and finished rolled threaded steel bars 5 pass through the first steel pipe 4 and paired to connect the corbel flat beams 11 on both sides of the double-walled high pier 1, and a single paired drawn and finished rolled threaded steel bar 5 is applied with 200kN to balance the horizontal force of the corbel flat beam 11, so that the two corbel flat beams 11 are self-locking, and the end of the corbel flat beam 11 is inserted into the upper embedded box 3 for supporting the end. The pre-stretched foot-protecting finish-rolled rebar 9 passes through the second steel pipe 8 to ensure that the end of the corbel flat beam 11 does not exit the lower embedded box 7, and the middle part of the corbel flat beam 11 passes through the pin 13 and the diagonal brace The rods 12 are connected, and the lower ends of the diagonal braces 12 are inserted into the lower embedded box 7, and the two corbel units are connected into a whole through the parallel girders 14 and the oblique girders 15. The connection of the corbel flat beam 11 and the diagonal brace 12 is provided with a bolt hole, which is connected by a bolt to reduce welding and facilitate construction. The corbel unit is composed of multiple individual parts, which can be directly installed on site after processing in the factory to improve construction efficiency. Simultaneously, the corbel flat beam 11 can also be used as a hanging basket member, and the corbel can be cast-in-place for side spans, thereby improving the utilization rate of material turnover and reducing costs. Since the upper pre-embedded longitudinal beam 2 and the lower pre-embedded strut 6 are pre-embedded between the double walls, the force of the corbel is balanced, and the force of the double walls of the high pier is balanced without causing bias.

In a further preferred embodiment, the upper embedded longitudinal beam 2 of the upper embedded part is a single I40a I-beam.

In a further preferred embodiment, the lower embedded strut 6 of the lower embedded part is a single I40a I-beam.

In a further preferred embodiment, the middle part of the corbel flat beam 11 is connected to the diagonal brace 12 through a φ50 pin 13 .

In a further preferred embodiment, four longitudinal beam finish-rolled rebars are pierced on both sides of the web of each upper pre-embedded longitudinal beam 2 .

In a further preferred embodiment, the finish-rolled rebar for the longitudinal beam is a φ32 finish-rolled rebar.

In a further preferred embodiment, a prestress of 200 kN is stretched to each longitudinal girder finish-rolled rebar.

The beneficial effect of the utility model is that, compared with the prior art, the self-locking bracket for the construction of double-walled high piers made by the technical scheme of the utility model is based on the characteristics of the force, and fully considers the use of the hanging basket bracket Materials, strive for the versatility and turnover of materials, use the hanging basket components directly on the brackets, and at the same time use them commonly on the cast-in-place brackets of the side spans. The embedded parts and the corbel unit of the bracket are composed of multiple components. Each component is factory-processed at the factory and assembled directly on site to improve construction efficiency, speed up construction progress, reduce construction costs, and reduce safety risks. It solves the problems that the 0# block material and the hanging basket construction of the high pier cantilever construction cannot be used universally, and the safety risk of the 0# block construction bracket of the high pier is relatively large, and the construction is difficult.

Although the utility model has been described above with reference to specific embodiments, those skilled in the art should understand that many modifications can be made to the configuration and details disclosed in the utility model within the principle and scope of the utility model. The protection scope of the present utility model is determined by the appended claims, and the claims are intended to cover all modifications included in the equivalent literal meaning or scope of the technical features in the claims.

Claims (7)

1. for a self-locking type bracket for double; two wall height piers, comprising: upper strata built-in fitting, lower floor's built-in fitting and bracket unit,

It is characterized in that,

Upper strata built-in fitting is embedded in double; two wall height pier (1) top, and this upper strata built-in fitting includes pre-buried longeron (2), upper embedded box (3) and the first steel pipe (4)；Wherein, upper pre-buried longeron (2) is welded with the single I-steel of end plate for two ends, and on per pass, the web both sides of pre-buried longeron (2) are equipped with longeron finish rolling deformed bar；Upper embedded box (3) is welded together by the first steel pipe (4) and upper pre-buried longeron (2)；

Lower floor's built-in fitting is embedded in double; two wall height pier (1) top, the lower section of upper strata built-in fitting, this lower floor's built-in fitting include under pre-buried strut (6), lower embedded box (7) and the second steel pipe (8)；Wherein, under this, pre-buried strut (6) is single I-steel, lower embedded box (7) by the second steel pipe (8) with under pre-buried strut (6) weld together；

Upper pre-buried longeron (2) and under be provided with " people " the font brace (10) for supporting upper pre-buried longeron (2) between pre-buried strut (6)；

Bracket unit is arranged on embedded box (3) place, this bracket unit includes drawing finish rolling deformed bar (5), spats finish rolling deformed bar (9), bracket flat-topped ridge (11), hound (12), lateral purlin sheet (14) and oblique copula sheet (15)；Wherein, to drawing finish rolling deformed bar (5) through the first steel pipe (4) to drawing the bracket flat-topped ridge (11) connecting double, two wall height pier (1) both sides, spats finish rolling deformed bar (9) traverse the second steel pipe (8), the end of bracket flat-topped ridge (11) is inserted in the upper embedded box (3) for supporting this end, the middle part of bracket flat-topped ridge (11) is connected with hound (12) by pin (13), the lower end of hound (12) is inserted in lower embedded box (7), two bracket unit connect into entirety by lateral purlin sheet (14) and oblique copula sheet (15).

2. a kind of self-locking type bracket for double; two wall height piers according to claim 1, it is characterised in that the upper pre-buried longeron (2) of described upper strata built-in fitting is single I 40a I-steel.

3. a kind of self-locking type bracket for double; two wall height piers according to claim 1, it is characterised in that under described lower floor built-in fitting, pre-buried strut (6) is single I 40a I-steel.

4. according to claim 1-3 when according to any one of a kind of self-locking type bracket for double; two wall height piers, it is characterised in that the middle part of bracket flat-topped ridge (11) is connected with hound (12) by the pin (13) of φ 50.

5. a kind of self-locking type bracket for double; two wall height piers according to claim 1, it is characterised in that on per pass, the web both sides of pre-buried longeron (2) are equipped with four longeron finish rolling deformed bars.

6. a kind of self-locking type bracket for double; two wall height piers according to claim 5, it is characterised in that longeron finish rolling deformed bar is φ 32 finish rolling deformed bar.

7. according to claim 5 or 6 when according to any one of a kind of self-locking type bracket for double; two wall height piers, it is characterised in that the prestressing force of every longeron finish rolling deformed bar stretch-draw 200kN.