CN110629683A - Composite prefabricated bridge cantilever construction bracket - Google Patents

Abstract

The invention provides a composite assembled bridge cantilever construction bracket. In order to achieve the above object, the present invention is achieved through the following technical solutions: a composite assembled bridge cantilever construction bracket, including the bracket main beam, vertical rods and oblique rods, wherein the bracket main beam is anchored to the pier column, and There are intermediate joints and end joints; one end of the vertical rod is connected to the end joint of the main beam of the bracket, and the other end is connected to the diagonal rod; one end of the vertical rod is connected to the middle joint of the main beam of the bracket, and the other end is connected to the vertical rod; A closed triangular structure is formed between the main beam of the bracket, the vertical rod and the diagonal rod.

Description

Composite prefabricated bridge cantilever construction bracket

technical field

The invention relates to a bridge cantilever construction bracket, in particular to a composite assembled bridge cantilever construction bracket, which belongs to the technical field of traffic engineering.

Background technique

At present, the cantilever bracket structure of continuous girder bridge cantilever construction pier top 0# section, especially the construction of high pier 0# section, has become a necessary construction equipment. The transportation is inconvenient, and it is usually necessary to pre-embed steel plates and other components on the pier column for anchorage during installation, which has a great impact on the appearance quality of the pier column. The drop frame device on the bracket generally adopts a sand bucket, and this structure cannot adjust the elevation under load.

Contents of the invention

In view of the above-mentioned construction status and according to the characteristics of bridge cantilever construction, the present invention provides a composite assembled bridge cantilever construction bracket.

In order to achieve the above object, the present invention is achieved through the following technical solutions:

A composite fabricated bridge cantilever construction bracket, including bracket main girders, vertical rods and inclined rods, wherein

The main beam of the bracket is anchored to the pier column, and is provided with intermediate joints and end joints;

Upright rod, one end is connected with the end joint of the main beam of the bracket, and the other end is connected with the diagonal rod;

Slanting rod, one end is connected with the middle joint of the main beam of the bracket, and the other end is connected with the vertical rod;

A closed triangular structure is formed between the main beam of the bracket, the vertical rod and the diagonal rod.

On the bracket foundation of the above-mentioned composite fabricated bridge cantilever construction, a conversion joint is provided at the connecting end of the bracket main beam and the pier column. Both the connection part and the main beam connection part are rectangular frame structures.

On the cantilever construction bracket foundation of the composite prefabricated bridge mentioned above, a notch is reserved on the pier column, one end of the conversion joint extends into the reserved notch of the pier column, and the other end of the conversion joint is connected to the main beam of the bracket, which is located on the same side of the pier column. The two bracket main beams) are tensioned by two sets of intersecting tension screws, and the ends are provided with adjustable screws.

On the basis of the above-mentioned composite assembled bridge cantilever construction bracket, it also includes a plurality of load-adjusting drop frames, and the load-adjusting drop frame is located at the top of the bracket main beam and corresponds to the beam of the bridge formwork.

On the basis of the above-mentioned composite assembled bridge cantilever construction bracket, the load adjustment drop frame includes an inner cylinder, an outer cylinder and a hydraulic jack, the inner cylinder and the outer cylinder are connected by self-locking nuts, and the hydraulic jack is arranged in the outer cylinder and connected with the inner cylinder.

On the bracket foundation of the cantilever construction of the above-mentioned composite fabricated bridge, reserved holes or pre-embedded sleeves are set on the pier columns, and the main beam of the bracket is anchored to the pier columns by using anchor bolts or precision-rolled rebar.

On the base of the cantilever construction bracket of the composite assembled bridge, a working platform is arranged on the main girder of the bracket.

The advantages of the present invention are:

1. The entire bracket is a composite assembled structure with a simple structure, and all components are connected by pins.

2. The closed triangular structure system has reasonable stress and good stability.

3. The conversion joint set on the main beam of the bracket can meet the needs of various anchoring conditions.

4. The top of the bracket is equipped with a load-adjustable drop frame, which realizes the adjustment of the elevation under the load, and has good applicability.

5. The bracket structure is easy to install and remove, and the assembly is flexible.

6. The size of the rod is reasonable, the processing and manufacturing are convenient, and the storage and transportation are convenient.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention.

Fig. 1 is a front structural schematic view of the main beam of the bracket of the present invention without conversion joints.

Fig. 2 is a side view structural schematic diagram of the main beam of the bracket without the adapter of the present invention.

Fig. 3 is a front structural schematic diagram of the conversion joint of the present invention.

Fig. 4 is a top structural schematic diagram of the conversion joint of the present invention.

Fig. 5 is a side view structural schematic diagram of the conversion joint of the present invention.

Fig. 6 is a schematic front view of the main beam of the bracket of the present invention.

Fig. 7 is a schematic top view of the bracket main beam of the present invention.

Fig. 8 is a schematic side view of the main beam of the bracket of the present invention.

Fig. 9 is a front structural schematic diagram of the bracket main beam belt conversion joint of the present invention.

Fig. 10 is a side view structural schematic diagram of the bracket main beam belt conversion joint of the present invention.

Fig. 11 is a top view structural schematic diagram of the bracket main beam belt conversion joint of the present invention.

Fig. 12 is a schematic front view of the main beam of the bracket with conversion joints according to the present invention.

Fig. 13 is a schematic top view of the main beam of the bracket with conversion joints according to the present invention.

Fig. 14 is a schematic diagram of the load-adjustable landing frame of the present invention.

In the figure, 1. Beam, 2. Load-adjusting drop frame, 3. Bracket main beam, 4. Diagonal rod, 5. Upright rod, 6. Upright column, 7. Embedded sleeve, 8. Anchor bolt, 9. Main beam Adapter, 10, working platform, 11, horizontally adjustable screw rod, 12 inner cylinder, 13, nut, 14 outer cylinder, 15, hydraulic jack, 16, pull screw rod.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the directions indicated by the terms "vertical", "upper", "lower", "horizontal" etc.

The orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and it is only for the convenience of describing the utility and simplification of the description.

described, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed in a specific orientation and

operation, and therefore should not be construed as limiting the invention. In addition, "first", "second", "third", and "fourth" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

As described in the background technology, the existing composite thermal insulation formwork has the following problems: the thermal insulation board is easy to fall off and the formwork body is separated during handling and use; since the two sides of the formwork are planes, the walls of the existing thermal insulation formwork cannot be completely occluded after construction. At the same time, it is prone to cracking, hollowing, water seepage and falling off; the outer wall of the thermal insulation formwork is flat, and it is not easy to spray and touch the mortar, which is easy to fall off, hollowing, and cracks. In order to solve the above problems, the present invention adopts the following technical solutions:

Example 1

Referring to Figures 1 and 2, a composite assembled bridge cantilever construction bracket includes a bracket main beam 3, a vertical rod 4, a diagonal rod 5 and a column 6, referring to Figures 6, 7 and 8, wherein the column 6 It is arranged on the outer periphery of the lower part of the pier column to play a supporting role. The bracket main beam 3 is anchored to the pier column, and is provided with an intermediate joint 32 and an end joint 31; one end of the vertical rod 4 is connected to the end joint 31 of the bracket main beam 3, and the other One end is connected to the upper end of the column 6; one end of the diagonal rod 5 is connected to the middle joint 32 of the bracket main beam 3, and the other end is connected to the upper end of the column 6; a closed triangle is formed between the bracket main beam 3, the vertical bar 4 and the diagonal bar 5 structure.

Reserved holes or pre-embedded sleeves are set on the pier column, and the bracket main beam 3 is anchored to the pier column by using anchor bolts or precision-rolled rebar.

Example 2

Referring to Fig. 9, Fig. 10 and Fig. 11, a composite assembled bridge cantilever construction bracket includes a bracket main beam 3, a vertical rod 4 and a diagonal rod 5, and the connecting end between the bracket main beam 3 and the pier column is provided with a conversion Joint 9, the bracket main beam 3 is anchored to the pier column, and is provided with an intermediate joint 32 and an end joint 31; one end of the vertical rod 4 is connected to the end joint 31 of the bracket main beam 3, and the other end is connected to the oblique bar; One end of the rod 5 is connected to the intermediate joint 32 of the bracket main beam 3, and the other end is connected to the column; the bracket main beam 3, the vertical rod 4 and the diagonal rod 5 form a closed triangle structure.

Referring to Fig. 3, Fig. 4 and Fig. 5, the conversion joint 9 is welded by profiles, and the conversion joint 9 includes a pier column connection part 91 and a main beam connection part 92, both of which are rectangular frames The structure has a pier-column connection hole a and a main beam connection hole b.

A notch is reserved on the pier column, one end of the connection part 91 of the conversion joint 9 extends into the reserved notch of the pier column and is fixed through the connection hole a of the pier column through the pin shaft, and one end of the connection part 92 of the conversion joint is connected to the main beam of the bracket 3 is connected and fixed through the connecting hole b of the main beam through the pin shaft, and the two bracket main beams 3 located on the same side of the pier column are tensioned by two sets of intersecting tension screws 16, and the ends are provided with adjustable screws 11 , to ensure overall stability.

In each of the above-mentioned embodiments, with reference to FIG. 14 , it also includes a plurality of load-adjusting drop frames 2. The load-adjusting drop frames 2 are located at the top of the bracket main beam 3 and correspond to the beam of the bridge formwork. The load-adjusting drop frames include an inner cylinder 12, an outer cylinder 14 and Hydraulic jack 15 , inner cylinder 12 and outer cylinder 14 are connected by self-locking nut 13 , hydraulic jack 15 is arranged in outer cylinder 14 and connected with inner cylinder 12 .

In each of the above-mentioned embodiments, the working platform 10 is set on the bracket main beam 3 .

In each of the above-mentioned embodiments, the components are connected by pin shafts, so as to realize convenient transportation and quick assembly.

Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still The technical solutions recorded in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (7)

1. The utility model provides a compound assembled bridge cantilever construction bracket which characterized in that: comprises a bracket main beam (3), a vertical rod (4) and an inclined rod (5), wherein

The bracket main beam (3) is connected with the pier stud in an anchoring way and is provided with a middle joint and an end joint;

one end of the upright rod (4) is connected with a joint at the end part of the bracket main beam (3), and the other end is connected with the diagonal rod;

one end of the diagonal rod (5) is connected with the middle joint of the bracket main beam (3), and the other end of the diagonal rod is connected with the vertical rod;

a closed triangular structure is formed among the bracket main beam (3), the upright rod (4) and the diagonal rod (5).

2. The composite type assembly type bridge cantilever construction bracket according to claim 1, wherein: bracket girder (3) is equipped with the crossover sub with the pier stud link, and the crossover sub forms for the section bar welding, and the crossover sub includes pier stud connecting portion and girder connecting portion, and pier stud connecting portion and girder connecting portion are the rectangular frame structure.

3. The composite type assembly type bridge cantilever construction bracket according to claim 2, wherein: the pier stud is provided with a reserved groove opening, one end of the adapter extends into the pier stud reserved groove opening, the other end of the adapter is connected with the bracket main beam (3), the two bracket main beams (3) which are positioned at the same side of the pier stud are tensioned through two groups of crossed opposite-pulling screw rods, and the end part of the adapter is provided with an adjustable screw rod (11).

4. The composite type assembly bridge cantilever construction bracket according to any one of claims 1 to 3, wherein: the device also comprises a plurality of load adjustment falling frames, wherein the load adjustment falling frames are positioned at the top ends of the bracket main beams and correspond to the bridge template cross beams.

5. The composite type assembly type bridge cantilever construction bracket according to claim 4, wherein: the load-bearing adjustment falling frame comprises an inner cylinder (12), an outer cylinder (14) and a hydraulic jack (15), wherein the inner cylinder (12) is connected with the outer cylinder (14) through a self-locking nut (13), and the hydraulic jack (15) is arranged in the outer cylinder (14) and is connected with the inner cylinder (12).

6. The composite type assembly type bridge cantilever construction bracket according to claim 1, wherein: the pier stud is provided with a preformed hole or a pre-buried sleeve, and the bracket main beam (3) is anchored with the pier stud by adopting an anchor bolt or finish-rolled deformed steel bar.

7. The composite type assembly bridge cantilever construction bracket according to any one of claims 1 to 3, wherein: a working platform (10) is arranged on the bracket main beam (3).