CN210439163U

CN210439163U - Diagonal joist supporting structure applicable to assembly and disassembly of continuous beam

Info

Publication number: CN210439163U
Application number: CN201921152983.5U
Authority: CN
Inventors: 杨伟; 齐宁宁; 许保生; 侯中峰; 张凯光; 韩亚光; 秦亚丽
Original assignee: China Construction Seventh Engineering Division Corp Ltd
Current assignee: China Construction Seventh Engineering Division Corp Ltd
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-05-01
Anticipated expiration: 2029-07-22

Abstract

The utility model relates to a detachable diagonal joist supporting structure suitable for a continuous beam, which effectively solves the problems of inconvenient installation, more embedded parts, less turnover times and high safety risk of the current 0# block construction bracket; the technical scheme includes that the device comprises an upper group of PVC pipes and a lower group of PVC pipes which are pre-embedded at the tops of pier columns, wherein each PVC pipe is internally provided with a finish-rolled deformed steel bar in a penetrating mode, two ends of a group of PVC pipes above the PVC pipes are respectively provided with an I-shaped steel corbel, each I-shaped steel corbel is fixed at the end parts of four finish-rolled deformed steels through nuts, two ends of a group of PVC pipes below the PVC pipes are respectively provided with a supporting beam which is parallel to the PVC pipes, the inner ends of the supporting beams are fixed at the end parts of the four finish-rolled deformed steels through nuts, an inclined pull rod is connected between the outer end of each supporting beam and the I-shaped steel corbel above the supporting; the utility model discloses simple structure, the dead weight is little, and the installation is demolishd the convenience, and built-in fitting is small in quantity, and the construction risk is low.

Description

Diagonal joist supporting structure applicable to assembly and disassembly of continuous beam

Technical Field

The utility model relates to a 0# piece construction field of continuous beam specifically is a joist bearing structure is drawn to one side to be applicable to continuous beam dismantled and assembled.

Background

With the increasing of the investment of the country to the infrastructure, the design of bridge develops towards the large-span, 0# piece is as the first stage of continuous beam cantilever casting, to highly exceeding 50m, and the requirement to the bearing capacity, stability and the deflection of its 0# piece temporary bracket is higher, often adopts the method of pre-burying I-steel crossbeam in the pier stud and adding the bracing, but to high pier 0# piece, the installation of bracket is wasted time and energy, the use of a large amount of built-in fittings causes the repair of pier stud outward appearance also difficult, the material turnover number is less, the high altitude of later stage bracket is demolishd, has increased the safety risk.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned condition, for overcoming prior art's defect, the utility model provides a be applicable to continuous beam dismantled and assembled draw joist bearing structure to one side, the effectual installation of 0# piece construction bracket of having solved is inconvenient, and the built-in fitting is many, and the turnover number of times is few, the problem that the safety risk is high.

The technical scheme of its solution is, a be applicable to detachable and detachable oblique pull joist bearing structure of continuous beam, including upper and lower two sets of pre-buried PVC pipe at the pier stud top, the PVC pipe is horizontal to be arranged and is run through the pier stud, every group PVC pipe is including four that are parallel to each other and become the rectangle distribution, every PVC intraductal finish rolling screw-thread steel that has all worn, an I-steel bracket is all installed at the both ends of a set of PVC pipe in top, every I-steel bracket is fixed at the tip of four finish rolling screw-thread steels through the nut, the joist parallel rather than is all installed at the both ends of a set of PVC pipe in below, the inner of joist is fixed at the tip of four finish rolling screw-thread steels through the nut, all be connected with the oblique pull rod between the I-steel bracket of every joist and its top, the both ends of oblique pull rod are all connected with I-steel bracket or joist.

The utility model discloses simple structure, the dead weight is little, and the installation is demolishd the convenience, and built-in fitting is small in quantity, and the construction risk is low.

Drawings

FIG. 1 is a front view of the present invention; in the figure, 9 represents pillars and 10 represents 0# block.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a left side view of the diagonal draw bar position.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

By figure 1 to 3 provide, the utility model discloses a two sets of pre-buried PVC pipe 1 at pier stud top from top to bottom, PVC pipe 1 horizontal level is arranged and is run through the pier stud, every group PVC pipe 1 is including four that are parallel to each other and become the rectangle distribution, a finish rolling screw-thread steel 2 has all been worn in every PVC pipe 1, an I-steel bracket 3 is all installed at a set of PVC pipe 1's of top both ends, the tip at four finish rolling screw-thread steels 2 is fixed through the nut to every I-steel bracket 3, a joist 4 rather than parallel is all installed at a set of PVC pipe 1's of below both ends, the tip at four finish rolling screw-thread steels 2 is fixed through the nut to the inner of joist 4, all be connected with oblique pull rod 5 between the I-steel bracket 3 of every joist 4's outer end rather than the top, the both ends of oblique pull rod 5 are all connected with I-steel bracket 3 or joist 4 through bailey 6.

A bracket steel bar 7 is pre-embedded in the pier column below each I-shaped steel bracket 3, so that the bearing capacity of the concrete at the position can be improved.

The bracket steel bars 7 are composed of two steel bars welded together at an acute angle.

The pier stud of the outer end of each group of PVC pipes 1 is provided with a reserved notch 8, and the inner ends of the I-shaped steel corbels 3 and the joists 4 are arranged in the reserved notches 8.

The utility model discloses when the construction, all penetrate finish rolling deformed steel bar 2 in every PVC pipe 1, then with joist 4, diagonal draw bar 5 and I-steel bracket 3 hoist to the mound top position, with I-steel bracket 3 and through the both ends of four finish rolling deformed steel bars 2 of thread tightening above, fix the finish rolling deformed steel bar 2's of below both ends in joist 4 the inner through the nut, then with bailey 6 with the both ends of diagonal draw bar 5 be connected with I-

steel bracket

3 and 4 outer ends of joist respectively. And a plurality of groups of joists 4 are arranged on the top of the pier according to the condition, and then the joists 4 can be used as supporting pieces to build and construct a supporting platform.

After the construction of the No. 0 block is completed, the finish rolling deformed steel bar 2 formed by the consolidation of the joist 4 and the pier stud is removed, the I-shaped steel corbel 3 and the diagonal draw bar 5 are removed, then the No. 0 construction platform is lifted to the ground to be disassembled by utilizing a hoist engine matched with a tower crane or a crane through the preformed hole of the No. 0 bottom plate, and finally the pre-buried PVC pipe 1 and the preformed notch 8 are plugged.

The utility model has the advantages of showing:

1. this scheme abandons traditional triangular bracket and adopts novel joist 4 structure, and every group supports and only uses a joist 4 and a diagonal draw bar 5, reduces the structure dead weight, and the installation and demolish hoist and mount convenience.

2. Joist 4 all adopts articulatedly with diagonal draw bar 5, diagonal draw bar 5 and I-steel bracket 3, and joist 4 adopts pre-buried PVC pipe 1 with the pier stud anchor, wears finish rolling screw-thread steel 2, and the anchor is in the pier shaft, with the help of the installation of creeping formwork platform, and the safe risk is little, and the later stage is repaired simply conveniently.

3. 0# piece construction built-in fitting quantity significantly reduces, and each component all adopts bolted connection or 6 connections of bailey round pin, and the solderless, the dismouting is convenient, and all components all can have enough to meet the need the use, and later stage repair only needs shutoff pre-buried PVC pipe 1 and preformed groove.

4. The safety of installation and removal of 0# block bracket of a high-pier large-span bridge is improved, and the risk of overhead operation construction is greatly reduced.

5. The inclined pulling type is safer and not easy to deform compared with an inclined pulling type.

Claims

1. A diagonal joist supporting structure suitable for a detachable continuous beam is characterized by comprising an upper group of PVC pipes (1) and a lower group of PVC pipes (1) which are pre-embedded at the top of a pier column, the PVC pipes (1) are horizontally arranged and penetrate through the pier column, each group of PVC pipes (1) comprises four PVC pipes which are parallel to each other and distributed in a rectangular shape, each PVC pipe (1) is internally provided with a finish-rolled deformed steel bar (2), two ends of the upper group of PVC pipes (1) are respectively provided with an I-shaped steel corbel (3), each I-shaped steel corbel (3) is fixed at the end parts of the four finish-rolled deformed steel bars (2) through nuts, two ends of the lower group of PVC pipes (1) are respectively provided with a joist (4) which is parallel to the joist, the inner ends of the joists (4) are fixed at the end parts of the four finish-rolled deformed steel bars (2) through nuts, a diagonal draw bar (5) is connected between the outer end of each, two ends of the diagonal draw bar (5) are connected with the I-shaped steel corbel (3) or the joist (4) through the bailey pin (6).

2. The detachable diagonal joist supporting structure suitable for continuous beams according to claim 1, wherein a corbel steel bar (7) is embedded in a pier column below each I-steel corbel (3).

3. A detachable diagonal joist support structure suitable for continuous beams according to claim 2, characterised in that the corbel steel bars (7) consist of two steel bars welded together at an acute angle.

4. The diagonal joist supporting structure applicable to the detachable continuous beams is characterized in that reserved notches (8) are formed in pier columns at the outer ends of each group of PVC pipes (1), and I-shaped steel corbels (3) and the inner ends of joists (4) are arranged in the reserved notches (8).