CN220847108U - Cast-in-situ bracket platform - Google Patents

Abstract

The utility model belongs to the technical field of high pier cast-in-situ construction and provides a cast-in-situ bracket platform which comprises a triangular bracket set symmetrically arranged on two sides of a pier column, wherein the top surface of the triangular bracket set is provided with a pair of bearing cross beams, a plurality of bailey pieces are arranged between the same pair of bearing cross beams, the tops of the bailey pieces are provided with distribution beams, the distribution beams on two sides are connected with flange support beams outside the pier column, the triangular bracket set comprises a plurality of triangular brackets, each triangular bracket comprises an upper shear key and a lower shear key which are arranged on the upper and lower positions of the pier column, a bracket cross rod is rotatably arranged on the upper shear key, a bracket diagonal rod is rotatably arranged on the lower shear key, and the tail end of the bracket diagonal rod is rotatably connected with the middle part of the bracket cross rod. The problem that current bracket platform security is lower is solved.

Description

Cast-in-situ bracket platform

Technical Field

The utility model belongs to the technical field of high pier cast-in-situ construction, and particularly relates to a cast-in-situ bracket platform.

Background

The common prestressed concrete bridge side span straight line section is constructed by a mode of erecting a steel pipe bracket; however, along with the large-scale popularization of bridge construction, the construction of a high pier side span cast-in-situ section of more than 30m is also met, and the construction is often carried out by adopting a bracket method of pre-embedding triangular brackets on pier bodies aiming at the terrains.

The traditional bracket is generally provided with holes on the pier body, and steel bars are penetrated to serve as bearing fulcra, but the concrete around the holes is easy to be poured incompletely, and the pier body structure is influenced to a certain extent; or the steel plate is welded to the foundation bolt and is embedded in the pier body, the bracket is welded on the steel plate, and the triangular bracket is arranged on the bracket, but the high-altitude welding quality is difficult to control, the bearing capacity of the bracket cannot be guaranteed, and the whole weight is large due to the cantilever length of the bent cap, in addition, the operation is carried out in the super high altitude, so that the influence of wind power is large, and the potential safety hazard is large.

Disclosure of utility model

In view of the above problems, the present utility model aims to provide a cast-in-situ bracket platform, which aims to solve the problem of lower safety of the existing bracket platform.

The utility model adopts the following technical scheme: the bracket platform is including being used for the symmetry to set up the triangle bracket group in pier stud both sides, triangle bracket group top surface is equipped with a pair of bearing beam, is equipped with a plurality of bailey piece with being equipped with between the bearing beam to the bearing beam, and the distributing beam of bailey piece top is equipped with the distributing beam altogether, and the distributing beam of both sides just is located the pier stud outside and is connected with a flange supporting beam, triangle bracket group includes a plurality of triangle brackets, triangle bracket is including installing upper shear key, the lower shear key in pier stud upper and lower position, upward rotate on the shear key and be equipped with the bracket horizontal pole, rotate on the lower shear key and be equipped with the bracket diagonal bar, bracket diagonal bar end and bracket horizontal pole middle part rotate and are connected.

Furthermore, embedded boxes are arranged on two sides of the pier column corresponding to the upper shear key and the lower shear key.

Further, the bracket diagonal rods on the same side are provided with diagonal rod connecting frames.

Further, a pair of unloading blocks are arranged on the bracket cross rod, and the bearing cross beam is longitudinally arranged on the unloading blocks.

Further, steel pipe guardrails are arranged on the edges of the distribution beams.

Further, the distribution beam is arranged in two layers and is arranged horizontally and vertically.

Furthermore, the bailey pieces are provided with double splicing grooves, and connecting rods are connected between the double splicing grooves.

The beneficial effects of the utility model are as follows: when the construction of the high pier edge span cast-in-situ section is met, a bracket method of pre-buried triangular brackets can be adopted for the construction. The device adopts a triangle bracket group structure formed by combining a plurality of triangle brackets, the triangle bracket group is provided with the Bailey pieces, the Bailey pieces are respectively provided with the I-shaped steel distribution beams, the two sides of each distribution beam are connected with the flange support beams, so that the whole frame structure of the device is formed, and the whole safety is higher.

Drawings

FIG. 1 is a cross-sectional view of a cast-in-place bracket platform provided by the utility model.

FIG. 2 is a side view of a cast-in-place cradle platform according to the present utility model.

FIG. 3 is a top view of a cast-in-place bracket platform provided by the utility model.

Fig. 4 is an enlarged view at a in fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In order to illustrate the technical scheme of the utility model, the following description is made by specific examples.

Only those parts relevant to the embodiments of the present utility model are shown for convenience of description.

Referring to fig. 1-4, the bracket platform comprises a triangular bracket set symmetrically arranged on two sides of a pier column, a pair of bearing beams 1 are arranged on the top surface of the triangular bracket set, a plurality of bailey pieces 2 are arranged between the bearing beams 1, distribution beams 3 are arranged at the tops of the bailey pieces 2, the distribution beams 3 on two sides are connected with flange supporting beams 5 outside the pier column 4, the triangular bracket set comprises a plurality of triangular brackets, the triangular brackets comprise an upper shear key 6 and a lower shear key 7 which are arranged on the upper and lower positions of the pier column, a bracket cross bar 8 is arranged on the upper shear key 6 in a rotating manner, a bracket diagonal bar 9 is arranged on the lower shear key 7 in a rotating manner, the tail ends of the bracket diagonal bars 9 are in rotary connection with the middle of the bracket cross bar 8, and embedded boxes 10 are arranged on two sides of the pier column 4 corresponding to the upper shear key 6 and the lower shear key 7.

When the construction of the high pier edge span cast-in-situ section is met, a bracket method of pre-buried triangular brackets can be adopted for the construction. The device adopts a triangle bracket group structure formed by combining a plurality of triangle brackets, the triangle bracket group is provided with Bailey pieces, the Bailey pieces are respectively provided with an I-shaped steel distribution beam, two sides of the distribution beam are connected with flange support beams, thus forming an integral frame structure of the device,

The bearing structure of the whole bracket is mainly a triangular bracket on the pier body, the triangular bracket consists of a bracket cross rod and a bracket diagonal rod, and loads are transferred to the pier body embedded box through connection with an upper shear key and a lower shear key, so that a triangular stable stress structure is formed with the cylindrical surface of the pier column.

When the triangular brackets are installed, the embedded boxes can be integrally hoisted to the embedded box positions by adopting a tower crane after ground splicing acceptance for convenient installation, and the embedded boxes are connected with the corresponding upper shear keys and lower shear keys by adopting pin shafts, in the embodiment, 4 triangular brackets are arranged on a single side span cast-in-situ straight line segment. I.e. the triangular bracket set consists of 4 triangular brackets.

The construction of the side span cast-in-situ straight line section bracket adopts a triangular bracket form, a bracket embedded box is required to be buried synchronously during pier body construction, when the embedded box is installed, site measurement personnel determine the specific installation position of the embedded box according to a drawing and instruct workers to hoist the embedded box to a designated position for installation, and when the embedded box is installed, the embedded box is only required to be welded and fixed on pier column stirrups, so that the position deviation during pouring is prevented.

In the embodiment, the large-opening end part of the embedded box faces to the template when the box is embedded; the circular arc position embedded box cannot be installed along with the circular arc trend of the template and must be in a parallel state with the straight die position embedded box; and similarly, other embedded boxes are installed and fixed appropriately according to the drawing; the vertical distance between the upper embedded box and the lower embedded box is not smaller than the design distance, and can be larger than or equal to the design distance and not more than 2cm.

After the embedded box is installed, an upper shear key and a lower shear key are installed, when the upper shear key and the lower shear key are installed, finish rolling deformed steel bars are penetrated into the embedded box at first, then the upper shear key and the lower shear key are respectively hung and inserted into the corresponding embedded box, finish rolling nuts are screwed and fixed, the positions, the horizontal and the vertical degrees of the upper shear key and the lower shear key are ensured, and fine adjustment is needed if deviation exists.

After the installation of the upper shear key and the lower shear key is completed, the bracket cross rod and the bracket diagonal rod are assembled and accepted on site, and are integrally hoisted to the position of the embedded assembly by adopting a tower crane, and are connected with the upper shear key and the lower shear key by adopting pin shafts. The triangular bracket is installed at this time.

In order to integrate the four triangular brackets, the bracket diagonal rods 9 on the same side are provided with diagonal rod connecting frames 14. The four triangular brackets are connected into a triangular bracket group. The whole structure is more firm and stable.

In this structure, as shown in fig. 4, a pair of unloading blocks 11 are provided on the bracket cross bar 8, and the load-bearing cross bar is longitudinally 1-wise mounted on the unloading blocks 11. In order to facilitate the installation of the bearing cross beam, in the embodiment, 8 unloading blocks are divided into 4 groups for installation, each group of unloading blocks are closely arranged, and the unloading blocks are positioned on the cross beam of the bracket through the position shown in the drawing, so that the unloading blocks can be fixedly connected with the cross beam of the bracket through bolts. And then longitudinally fixing the bearing cross beams on the unloading blocks to be connected with the triangular brackets, wherein the bearing cross beams are arranged in two rows, and the arrangement interval is consistent with the interval of the unloading blocks.

As a preferential structure, the distribution beam 3 is arranged in two layers and horizontally and vertically; the edge of the distribution beam 3 is provided with a steel pipe guardrail 12.

An I-shaped steel distribution beam is erected on the top of the Bailey beam and is divided into an upper layer and a lower layer. The lower layer I-shaped steel distribution beam is divided into a plurality of rows in the transverse bridge direction and is uniformly arranged, and the upper end and the lower end are connected through welding. The upper layer I-shaped steel distribution beam has a direct bearing function, the lower layer I-shaped steel distribution beam edge to flange supporting beams and the upper layer bottom die support I-shaped steel distribution beam edge to the bottom of the edge of the side span cast-in-situ straight line section are paved with thick wood boards to form a worker working platform, the edge of the working platform is provided with a steel pipe guardrail, the steel pipe guardrail is sealed by a dense mesh net from top to bottom, the steel pipe guardrail plays a protective role, and the safety of the device is improved.

Further as a preferential structure, the bailey pieces 2 are provided with double splicing grooves 13, and connecting rods are connected between the double splicing grooves. The bailey pieces are assembled on the ground, the crane is sequentially and transversely hoisted from the middle to the two ends, and the bailey pieces are connected with the bearing cross beam through welding. During construction, the bailey pieces are assembled on the ground according to the required form of the bailey pieces, the bailey pieces are positioned according to the positions shown in the drawing through the crane after being inspected, and the bailey pieces are connected with the bearing cross beam through welding after the positions of the bailey pieces are positioned. The bailey pieces on the same side are fixed through the connecting rod, reinforcement treatment is carried out, the stability of the bailey pieces is enhanced, and the safety of the device is further improved.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims (7)

1. A cast-in-place bracket platform which is characterized in that: the bracket platform is including being used for the symmetry to set up the triangle bracket group in pier stud both sides, triangle bracket group top surface is equipped with a pair of bearing beam, is equipped with a plurality of bailey piece with being equipped with between the bearing beam to the bearing beam, and the distributing beam of bailey piece top is equipped with the distributing beam altogether, and the distributing beam of both sides just is located the pier stud outside and is connected with a flange supporting beam, triangle bracket group includes a plurality of triangle brackets, triangle bracket is including installing upper shear key, the lower shear key in pier stud upper and lower position, upward rotate on the shear key and be equipped with the bracket horizontal pole, rotate on the lower shear key and be equipped with the bracket diagonal bar, bracket diagonal bar end and bracket horizontal pole middle part rotate and are connected.

2. A cast in place cradle platform as set forth in claim 1, wherein: and embedded boxes are arranged on two sides of the pier column corresponding to the upper shear key and the lower shear key.

3. A cast in place cradle platform as set forth in claim 2, wherein: and the bracket diagonal rods on the same side are provided with diagonal rod connecting frames.

4. A cast in place cradle platform as set forth in claim 3, wherein: the bracket cross bar is provided with a pair of unloading blocks, and the bearing cross beam is longitudinally arranged on the unloading blocks.

5. A cast in place cradle platform as set forth in claim 4, wherein: and steel pipe guardrails are arranged at the edges of the distribution beams.

6. A cast in place cradle platform as set forth in claim 5, wherein: the distribution beam is arranged in two layers and is arranged horizontally and vertically.

7. A cast in place cradle platform as set forth in claim 6, wherein: the bailey piece is provided with double-spelling grooves, and connecting rods are connected between the double-spelling grooves.