Bailey beam support of large-span large-volume cast-in-place bent cap

Abstract

A bailey beam support of a large-span large-size cast-in-place cover beam comprises a plurality of steel pipe stand columns installed on a bridge bearing platform, column top connecting pieces are arranged on the tops of the steel pipe stand columns, bailey beams are arranged on the upper portions of the column top connecting pieces in the transverse bridge direction, and the bailey beams are fixedly connected with bridge pier columns through pier column hoops. The bailey beam support of the large-span large-size cast-in-place bent cap can overcome the defects that the requirement for a foundation is high, material consumption is large, the period is long and safety risks are large, foundation treatment is not needed, assembly and disassembly are easy, the support can be repeatedly used, cost is low, the construction speed is high, the structure is stable and reliable, and the safety risks are small.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bridge engineering construction field especially a bailey beam support of large span large volume cast-in-place bent cap. BACKGROUND

[0002] In bridge engineering construction, the lower structure of the bridge usually adopts double limb with bent cap vase pier, because the bent cap is large volume large span cast-in-place structure, considering appearance requirement, generally does not adopt preburied method to carry out construction, so usually adopts floor type support method construction. Floor type support needs to be supported on the ground, needs to handle the foundation, and the bearing capacity of the foundation is required to be higher, if the foundation has settlement, the safety of the support will be affected, and the floor support material consumption is large, the construction cycle is long, the safety risk is big, and the management cost is high. SUMMARY

[0003] The utility model provides a bailey beam support of large span large volume cast-in-place bent cap, can solve the shortcoming of high requirement to foundation, large material consumption, long period, big safety risk, does not need foundation treatment, and the support can be repeatedly used, and the cost is low, the construction speed is fast, the structure is stable and reliable, and the safety risk is small.

[0004] A bailey beam support of large span large volume cast-in-place bent cap, comprising a plurality of steel pipe columns installed on the bridge pile cap, a column top connector is arranged at the top of the steel pipe column, a bailey beam is arranged on the upper part of the column top connector along the transverse bridge direction, and the bailey beam is fixedly connected with the bridge pier column through a pier column hoop.

[0005] Preferably, the plurality of steel pipe columns are arranged around the pier column and connected through longitudinal and transverse bridge direction channel steel diagonal braces and horizontal channel steel braces.

[0006] Preferably, a load-bearing steel plate is welded at the top of each steel pipe column and fixedly connected through a stiffened steel plate.

[0007] Preferably, the column top connector is composed of a leveling steel plate and a limiting device, and the limiting device is fixedly connected with the load-bearing steel plate at the top of the steel pipe column.

[0008] The bailey beam is composed of no less than 4 bailey pieces arranged along the transverse bridge direction, arranged on the upper part of the leveling steel plate of the column top connector and fixedly connected through the limiting device.

[0009] Preferably, the pier column hoop is composed of an I-beam and a horse bolt, and two groups of bailey beams are connected through no less than 4 I-beams along the longitudinal bridge direction, the I-beams are connected with the bailey beams through the horse bolts, and the I-beams and the bailey beams are arranged close to the pier column.

[0010] The bailey beam support of large span large volume cast-in-place bent cap has the following beneficial effects:

[0011] 1. Bailey beam support is adopted, with steel pipe columns fixed on the pier to provide stress support points. Compared with conventional ground-mounted steel pipe support, this support utilizes the existing pier foundation, reducing the need for foundation treatment.

[0012] 2. Each component is simple, convenient, and quick to process, enabling factory-scale production.

[0013] 3. The structure is stable and reliable due to the overall assembly and disassembly, with low safety risk and no need to consider foundation settlement.

[0014] 4. It can be reused, avoiding the use of a large amount of turnover materials and reducing construction costs.

[0015] 5. Installation and dismantling are simple and quick, with a short construction period, saving time. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the transverse bridge structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the longitudinal bridge structure of this utility model;

[0019] Figure 3 This is a top view of the present invention;

[0020] Figure 4 This utility model Figure 2 Enlarged view of point A.

[0021] In the diagram: 1. Bridge abutment; 2. Steel pipe column; 2-1. Load-bearing steel plate; 2-2. Stiffening steel plate; 3. Column top connector; 3-1. Leveling steel plate; 3-2. Limiting device; 4. Bailey beam; 5. Column clamp; 5. I-beam; 5-2. U-bolt; 6. Bridge pier; 7. Channel steel brace; 8. Horizontal channel steel brace. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-4As shown, a kind of bailey beam support of large-span large-volume cast-in-place cover beam includes multiple steel pipe columns 2 installed on bridge pile cap 1, column top connecting piece 3 is arranged at the top of steel pipe column 2, bailey beam 4 is arranged on the upper portion of column top connecting piece 3 along the transverse bridge direction, and bailey beam 4 is fixedly connected with bridge pier 6 by pier hoop 5.

[0024] Multiple steel pipe columns 2 are respectively arranged around pier 6, and are connected by longitudinal and transverse bridge direction channel steel inclined bracing 7 and horizontal channel steel bracing 8.

[0025] The top of each steel pipe column 2 is welded with a stress steel plate 2-1, and is reinforced and welded by stiffening steel plate 2-2.

[0026] Column top connecting piece 3 is composed of leveling steel plate 3-1 and limiting device 3-2, and limiting device 3-2 is welded with stress steel plate 2-1 at the top of steel pipe column 2;

[0027] Bailey beam 4 is composed of no less than 4 bailey pieces arranged along the transverse bridge direction, is arranged on the upper portion of leveling steel plate 3-1 of column top connecting piece 3, and is fixedly welded by limiting device 3-2.

[0028] Pier hoop 5 is composed of I-beam 5-1 and riding bolt 5-2, two groups of bailey beams 4 are connected by no less than 4 I-beams 5-1 along the longitudinal bridge direction, I-beam 5-1 is connected with bailey beam 4 by riding bolt 5-2, and I-beam 5-1 is arranged close to pier 6 with bailey beam 4.

[0029] The process for construction of the utility model is as follows:

[0030] When used for construction, steel pipe column 2, column top connecting piece 3, bailey beam 4 (bailey piece), pier hoop 5, channel steel inclined bracing 7 and horizontal channel steel bracing 8 are pre-processed on site, bailey beam 4 is assembled into shape by flower stand, steel pipe column 2 is installed and fixed by crane, bailey beam 4 is integrally hoisted by crane after being fixedly welded by limiting device 3-1, I-beam 5-1 is hoisted by crane, bailey beam 4 is connected with I-beam 5-1 by riding bolt 5-2, longitudinal and transverse bridge direction channel steel inclined bracing 7 and horizontal channel steel bracing 8 are connected with steel pipe column 2 by bolts, and the installation speed is fast.

[0031] When removed, the sequence is opposite to that of installation, first, riding bolt 5-2 is taken out, I-beam 5-1 is removed, then limiting device 3-2 is taken out, bailey beam 4 is removed, after longitudinal and transverse bridge direction channel steel inclined bracing 7 and horizontal channel steel bracing 8 are removed, finally, steel pipe column 2 is removed.

[0032] The crane is used to command the removal construction, which is safe and fast.

[0033] The disadvantages of high requirement for foundation, large material consumption, long period, large safety risk, no foundation treatment, simple assembling and disassembling, reusable support, low cost, fast construction speed, stable and reliable structure and small safety risk can be solved.

[0034] The above-mentioned embodiments are only preferred technical solutions of the present application, and should not be regarded as limitations of the present application. The embodiments in the application and the features in the embodiments can be combined with each other as long as they do not conflict. The protection scope of the present application should be based on the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features recorded in the claims. That is, the equivalent replacement improvement within the scope is also within the protection scope of the present application.

Claims

1. A Bailey beam support for a large-span and large-volume cast-in-place capping beam, comprising a plurality of steel pipe columns (2) installed on a bridge pile cap (1), characterized in that: Steel pipe column (2) top is arranged with column top connecting piece (3), column top connecting piece (3) upper portion is arranged with bailey beam (4) along the transverse bridge direction, bailey beam (4) is fixedly connected with bridge pier (6) through pier hoop (5).

2. The Bailey beam support for large-span mass concrete cast-in-situ capping beam according to claim 1, characterized in that: Multiple steel pipe columns (2) are respectively arranged around pier (6), and are connected through longitudinal and transverse bridge direction channel steel inclined braces (7) and horizontal channel steel braces (8).

3. The Bailey beam support for large-span mass concrete cast-in-place capping beam according to claim 1 or 2, characterized in that: The top of each steel pipe column (2) is welded to receive force steel plate (2-1), and is fixedly connected through stiffening steel plate (2-2).

4. The Bailey beam support for large-span mass concrete cast-in-place capping beam according to claim 1 or 2, characterized in that: Column top connecting piece (3) is composed of leveling steel plate (3-1) and limiting device (3-2), limiting device (3-2) is fixedly connected with force steel plate (2-1) at the top of steel pipe column (2); Bailey beam (4) is composed of not less than 4 bailey pieces arranged along the transverse bridge direction, and is arranged on the upper portion of leveling steel plate (3-1) of column top connecting piece (3) and is fixedly connected through limiting device (3-2).

5. The Bailey beam support for long-span mass concrete cast-in-situ capping beam according to claim 1, wherein: Pier hoop (5) is composed of I-beam (5-1) and riding bolt (5-2), two groups of bailey beams (4) are connected through not less than 4 I-beams (5-1) along the longitudinal bridge direction, I-beam (5-1) is connected with bailey beam (4) through riding bolt (5-2), and I-beam (5-1) and bailey beam (4) are arranged close to pier (6).

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