Bracket support device of concrete box girder flange plate

Abstract

The utility model provides a concrete box girder flange plate corbel support device, including corbel support, box girder steel mould, U-shaped channel steel, Bailey beam, a plurality of corbel support are fixedly installed on both sides template of box girder steel mould at preset interval, the U-shaped channel steel is fixedly installed on the corbel support, the Bailey beam is fixedly installed on the U-shaped channel steel, the Bailey beam is fixedly installed on the U-shaped channel steel, the U-shaped channel steel is fixedly installed on the corbel support, and the Bailey beam is fixedly installed on the box girder steel mould. The box girder steel die is installed on a bridge foundation through hoisting, and the box girder flange plate is borne and installed on the upper portion of the box girder steel die. The flange plate is suitable for a large box girder bridge, a large number of scaffolds do not need to be erected on the ground, bracket supports, U-shaped channel steel and bailey beams do not need to be installed on the box girder steel mold in advance, the box girder steel mold can be directly assembled on the ground for use and integrally hoisted in place, and the construction efficiency is remarkably improved; the device is simple in structure, economical, practical and high in safety, and has wide application prospects in large box girder bridge support construction.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering construction technology, and in particular to a bracket support device for the flange plate of a concrete box girder. Background Technology

[0002] The full-span scaffolding method is a construction method in which scaffolding is erected at certain intervals under the main beam of a bridge. The scaffolding is interconnected to form a whole, which can provide sufficient support for the formwork before the main beam concrete is poured.

[0003] During the construction of concrete box girder formwork using the full-span scaffolding method, a large number of supports or scaffolding are often required to support the formwork of the box girder flanges. As the height of the main bridge girder increases, the workload required by the full-span scaffolding method increases significantly, not only consuming a lot of time but also requiring a huge investment of manpower, resulting in low construction efficiency.

[0004] Based on this, it is necessary to study an improved bracket support device for the flange plate of concrete box girders, in addition to the existing full-span scaffolding construction method. Utility Model Content

[0005] To address the aforementioned problems, this utility model aims to propose a bracket support device for the flange plate of a concrete box girder, which can optimize the support erection process, improve the support erection efficiency, and thus accelerate the construction progress, and has significant practical engineering implications.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A bracket support device for the flange of a concrete box girder includes bracket supports, a box girder steel formwork, a U-shaped channel steel, and a Bailey beam. Several bracket supports are fixedly installed at preset intervals on both sides of the box girder steel formwork. A U-shaped channel steel is fixedly installed on the bracket supports, and a Bailey beam is fixedly installed on the U-shaped channel steel. The box girder steel formwork is hoisted and installed on the bridge foundation, and the upper part of the box girder steel formwork supports the installation of the box girder flange.

[0008] Furthermore, it also includes several tie bolts. Several reserved holes are provided on the two side templates of the box girder steel formwork for the tie bolts to pass through. Each tie bolt passes through the reserved hole on the two side templates of the box girder steel formwork and is fixed at both ends with nuts.

[0009] Furthermore, it also includes an adjustable support, which is fixed to the top of the Bailey beam by bolts.

[0010] Furthermore, both the upper and lower parts of the bracket are fixed to the box girder steel formwork by steel rods.

[0011] Furthermore, the lower and upper parts of the bracket are provided with reserved holes, and the corresponding installation positions of the box girder steel formwork are also provided with reserved holes. The reserved holes of the bracket and the box girder steel formwork are used for steel bars to pass through, and the two ends of the steel bars are fixed with nuts to prevent the steel bars from sliding.

[0012] Furthermore, the Bailey beam is bolted to the U-shaped channel steel.

[0013] Furthermore, the U-shaped channel steel is provided with reserved holes, and the bracket is also provided with corresponding reserved holes. The bracket and the reserved holes of the U-shaped channel steel are fixedly connected by bolts.

[0014] Beneficial effects: This utility model is applicable to the flange plates of large box girder bridges. It eliminates the need to erect a large amount of scaffolding from the ground. The corbel supports, U-shaped channel steel and Bailey beams are pre-installed on the box girder steel formwork. The box girder steel formwork can be directly assembled on the ground and hoisted into place as a whole, which significantly improves construction efficiency. This device has a simple structure, is economical and practical, and has strong safety. It has a wide application prospect in the construction of large box girder bridge supports. Attached Figure Description

[0015] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0016] Figure 1 This is a schematic diagram of the bracket support device for the flange plate of the concrete box girder according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the corbel support device for the flange of the concrete box girder as described in this embodiment of the present invention, in its usage state.

[0018] Figure 3 This is a schematic diagram of the corbel support and tie bolts of the corbel support device for the flange plate of the concrete box girder described in this embodiment of the present invention installed on the steel formwork of the box girder;

[0019] Figure 4 This is a schematic diagram of the installation of the U-shaped channel steel of the corbel support device for the flange plate of the concrete box girder according to an embodiment of this utility model. Detailed Implementation

[0020] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] Example 1

[0022] See Figure 1-4 A bracket support device for the flange plate of a concrete box girder includes a bracket support 1, a box girder steel mold 2, a U-shaped channel steel 3, and a Bailey beam 5. Several bracket supports 1 are fixedly installed at preset intervals on both sides of the box girder steel mold 2. The U-shaped channel steel 3 is fixedly installed on the bracket support 1, and the Bailey beam 5 is fixedly installed on the U-shaped channel steel 3. The box girder steel mold 2 is hoisted and installed on the bridge foundation, and the upper part of the box girder steel mold 2 supports the installation of the box girder flange plate.

[0023] This embodiment is applicable to the flange plates of large box girder bridges. It eliminates the need to erect a large amount of scaffolding from the ground. The corbel supports, U-shaped channel steel, and Bailey beams are pre-installed on the box girder steel formwork. The box girder steel formwork can be directly assembled on the ground and hoisted into place as a whole, significantly improving construction efficiency. This device is simple in structure, economical and practical, and highly safe, and has broad application prospects in the construction of large box girder bridge supports.

[0024] In a specific example, it also includes several tie bolts 4. Several reserved holes are provided on the two side templates of the box girder steel mold 2 for the tie bolts 4 to pass through. Each tie bolt 4 passes through the reserved hole on the two side templates of the box girder steel mold 2 and is fixed at both ends with nuts.

[0025] The tie bolts in this embodiment can prevent the templates on both sides of the box girder steel formwork from expanding outward during concrete pouring.

[0026] In a specific example, an adjustable support 6 is also included, which is fixed to the top of the Bailey beam 5 by bolts.

[0027] It should be noted that in this embodiment, the Bailey beam and adjustable support are assembled on the ground and then hoisted onto the U-shaped channel steel by a crane. The adjustable support in this embodiment can adjust the gap between the Bailey beam and the two side flanges of the box girder, thereby improving the support stability of the bridge.

[0028] In a specific example, the upper and lower parts of the bracket 1 are both fixed to the box girder steel formwork 2 by steel rods 7.

[0029] In a specific example, the lower and upper parts of the bracket 1 are provided with reserved holes, and the corresponding installation positions of the box girder steel mold 2 are also provided with reserved holes. The reserved holes of the bracket 1 and the box girder steel mold 2 are used for steel bars to pass through, and the two ends of the steel bars are fixed with nuts to prevent the steel bars from sliding.

[0030] In this embodiment, the upper and lower parts of the bracket are fixedly installed by pre-drilled holes, steel rods, and nuts, which improves the firmness and stability of the brackets on both sides of the box girder steel membrane.

[0031] In one specific example, the Bailey beam 5 is bolted to the U-shaped channel steel 3.

[0032] See a specific example. Figure 4 The U-shaped channel steel 3 is provided with reserved holes, and the bracket 1 is also provided with corresponding reserved holes. The bracket 1 and the reserved holes of the U-shaped channel steel 3 are fixedly connected by bolts.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bracket support device for the flange plate of a concrete box girder, characterized in that, The system includes a bracket support (1), a box girder steel mold (2), a U-shaped channel steel (3), and a Bailey beam (5). Several bracket supports (1) are fixedly installed at preset intervals on both sides of the box girder steel mold (2). A U-shaped channel steel (3) is fixedly installed on the bracket support (1). A Bailey beam (5) is fixedly installed on the U-shaped channel steel (3). The box girder steel mold (2) is hoisted and installed on the bridge foundation. The upper part of the box girder steel mold (2) supports the installation of the box girder flange plate.

2. The corbel support device for the flange plate of a concrete box girder according to claim 1, characterized in that, It also includes several tie bolts (4). Several reserved holes are provided on the two side templates of the box girder steel mold (2) for the tie bolts (4) to pass through. Each tie bolt (4) passes through the reserved hole on the two side templates of the box girder steel mold (2) and is fixed with nuts at both ends of the tie bolt (4).

3. The corbel support device for the flange plate of a concrete box girder according to claim 1, characterized in that, It also includes an adjustable support (6), which is fixed to the top of the Bailey beam (5) by bolts.

4. The corbel support device for the flange plate of a concrete box girder according to claim 1, characterized in that, The upper and lower parts of the bracket (1) are both embedded and fixed to the box girder steel formwork (2) by steel rods (7).

5. The corbel support device for the flange plate of a concrete box girder according to claim 4, characterized in that, The lower and upper parts of the bracket (1) are provided with reserved holes, and the corresponding installation positions of the box girder steel mold (2) are also provided with reserved holes. The reserved holes of the bracket (1) and the box girder steel mold (2) are used for steel bars to pass through. The two ends of the steel bars are fixed with nuts to prevent the steel bars from sliding.

6. The corbel support device for the flange plate of a concrete box girder according to claim 1, characterized in that, The Bailey beam (5) is bolted to the U-shaped channel steel (3).

7. The corbel support device for the flange plate of a concrete box girder according to claim 1, characterized in that, The U-shaped channel steel (3) is provided with reserved holes, and the bracket (1) is also provided with corresponding reserved holes. The bracket (1) and the reserved holes of the U-shaped channel steel (3) are fixedly connected by bolts.

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