Three-way fixed type high lifting pad structure used in bridge incremental launching engineering

Abstract

The utility model relates to a three-way fixed type high pad structure used in bridge pushing engineering. The three-way fixed type high pad structure comprises an upper pad plate (2), a lower pad plate (10) and a transverse positioning baffle plate (5), vertical reserved holes (3) are formed in four corners of the upper cushion plate (2), and a cushion core (4) is arranged on the lower surface of the upper cushion plate (2); the lower base plate (10) is arranged on the upper surface of the profile steel (11), the reinforcing steel bar sleeves (9) are arranged at four corners of the lower base plate (10), the upper base plates (2) and the cushion cores (4) are alternately stacked, and the vertical twisted steel bars (1) penetrate through the vertical reserved holes (3) and are screwed and fixed with the reinforcing steel bar sleeves (9); a transverse reserved hole (8) is formed in the transverse positioning baffle (5), and the longitudinal capped twisted steel (7) penetrates through the transverse reserved hole (8) to be screwed and fixed to the nut (6). The three-way fixed type high pad structure is easy to operate, the construction efficiency is improved, and the problem that when a pad is too high, the structure is prone to overturning and instability is solved.

Description

Technical Field

[0001] The utility model belongs to the field of civil engineering and belongs to a three-way fixed high-lift pad structure used in bridge jacking engineering. Background Art

[0002] With the rapid development of Chinese society and the rapid progress of science and technology, the country has made great efforts to invest in infrastructure. Single-layer traffic can no longer meet the needs of modern traffic, so more and more cities choose to build three-dimensional traffic, and even build higher-level highway bridges on the basis of three-dimensional traffic to meet the current growth of traffic volume. In order to avoid closing the original route when building the bridge and ensure smooth traffic, traditional construction methods can no longer meet this requirement. The use of factory-prefabricated steel box girders and transporting them to the site for top-pushing construction can effectively solve this problem. The research on bridge top-pushing construction has shown a booming momentum in my country.

[0003] When setting up a temporary steel pipe support as a jacking platform, the actual elevation of the support often deviates from the original design elevation. In this case, it is necessary to raise the jacking equipment through a pad structure to meet the design elevation requirement. On the other hand, during the jacking construction, it is necessary to use an auxiliary structure, the guide beam, to assist the steel box beam in crossing the existing line below. The guide beam has less stiffness than the steel box beam, and its deflection changes greatly during crossing. In order to meet the driving clearance requirements of the existing road below, it is often necessary to raise the guide beam through a pad structure to reduce the impact of the deflection change during the guide beam crossing process. However, when the pad is too high, the pad structure is prone to instability and overturning. Utility Model Content

[0004] The utility model aims at the deficiencies of the above-mentioned existing problems and provides a three-way fixed high pad structure for use in bridge jacking engineering, which solves the problem that the pad structure is prone to instability and overturning when the pad height is too high. At the same time, the designed pad structure components are simple and easy to operate manually, thereby improving the jacking construction efficiency.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme, a three-way fixed high-lift pad structure used in bridge jacking engineering, characterized in that it includes an upper pad, a lower pad and a transverse positioning baffle; the upper pad is provided with vertical reserved holes at the four corners, and a pad core is provided on the lower surface; the lower pad is placed on the upper surface of the steel section, and steel sleeves are provided at the four corners of the lower pad. Several upper pads and pad cores are stacked alternately, and the vertical threaded steel bars pass through the vertical reserved holes and are tightened and fixed with the steel sleeves; the transverse positioning baffle is provided with transverse reserved holes, and the longitudinal capped threaded steel bars pass through the transverse reserved holes and are tightened and fixed with nuts.

[0006] The upper pad is a square steel plate with a side length of 40 cm and a thickness of 2 cm, and is provided with vertical reserved holes at the four corners, and the hole diameter is 2 cm.

[0007] The cushion core is formed by splicing four square steel plates with a side length of 15 cm and a thickness of 6 cm.

[0008] The bottom plate is a square steel plate with a side length of 40 cm and a thickness of 2 cm, which is placed on the upper surface of the steel section and has steel sleeves at the four corners.

[0009] The steel bar sleeve has a height of 6 cm and an inner diameter of 2 cm, which matches the diameter of the vertical threaded steel bar.

[0010] The length of the vertical threaded steel bar is the sum of the thickness of several upper pads and pad cores, and the diameter is 2 cm.

[0011] The outer contour of the steel section has a length of 2m, a width of 60cm, and a height of 60cm to 100cm, and is used to support the upper structure.

[0012] The length of the transverse positioning baffle is 80 cm, the height is 10 cm, and the thickness is 1 cm to 2 cm. The inner side spacing between the front and rear transverse positioning baffles is 40 cm, which is the side length of the lower pad, and the lower pad is clamped.

[0013] The hole diameter of the transverse reserved holes is 20 mm to 25 mm, and the hole spacing is 4 cm to 6 cm.

[0014] The longitudinal capped threaded steel bar has a length of 45 cm to 50 cm and a diameter of 2 cm. It passes through the transverse reserved holes and is fixed with a nut with an inner diameter of 2 cm.

[0015] Beneficial effects of the utility model:

[0016] The utility model is a three-way fixed high-lift pad structure used in bridge jacking projects. The structure itself is made of steel, which has superior performance, far exceeding ordinary concrete materials in terms of firmness and reliability. During construction, vertical threaded steel bars pass through the vertical reserved holes set at the four corners of the upper pad from top to bottom, and are tightened with the steel sleeves on the upper surface of the lower pad to fix the structure vertically; two horizontal positioning baffles clamp the lower pad, and at the same time, the longitudinal capped threaded steel bars pass through the horizontal reserved holes and are tightened with nuts to fix the structure vertically and horizontally, forming a three-way fixed high-lift pad structure, which effectively solves the overturning and instability problems caused by the excessive height of the pad during jacking construction, and ensures the safe and smooth progress of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a three-way fixed high-lift pad structure used in bridge jacking engineering of the utility model;

[0018] Figure 2This is a schematic diagram of the overall structure combination of a three-way fixed high-lift pad structure used in a bridge jacking project;

[0019] Figure 3 This is a structural front view of a three-way fixed high-lift pad structure used in bridge jacking engineering of the utility model;

[0020] Figure 4 This is a schematic diagram of a block structure combination of a three-way fixed high-lift pad structure used in a bridge jacking project of the utility model;

[0021] Figure 5 This is a schematic diagram of the bottom assembly component structure of a three-way fixed high-lift pad structure used in bridge jacking engineering of the utility model;

[0022] In the attached drawings, 1 is a vertical threaded steel bar; 2 is an upper pad; 3 is a vertical reserved hole; 4 is a pad core; 5 is a horizontal positioning baffle; 6 is a nut; 7 is a longitudinal capped threaded steel bar; 8 is a horizontal reserved hole; 9 is a steel bar sleeve; 10 is a lower pad; and 11 is a steel section. DETAILED DESCRIPTION

[0023] In order to have a deeper understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are described with reference to the following drawings.

[0024] Please refer to the attached Figure 1 ~Attached Figure 4 In an example of the utility model, a three-way fixed high-lift pad structure for bridge jacking engineering is provided, including an upper pad, a lower pad and a transverse positioning baffle; the upper pad is provided with vertical reserved holes at the four corners, and a pad core is provided on the lower surface; the lower pad is placed on the upper surface of the steel section, and steel sleeves are provided at the four corners of the lower pad. Several upper pads and pad cores are stacked alternately, and the vertical threaded steel bars pass through the vertical reserved holes and are tightened and fixed with the steel sleeves; the transverse positioning baffle is provided with transverse reserved holes, and the longitudinal capped threaded steel bars pass through the transverse reserved holes and are tightened and fixed with nuts.

[0025] The upper pad 2 is a square steel plate with a side length of 40 cm and a thickness of 2 cm, and is provided with vertical reserved holes 3 at the four corners, and the hole diameter is 2 cm.

[0026] The cushion core 4 is formed by splicing four square steel plates with a side length of 15 cm and a thickness of 6 cm.

[0027] The bottom plate 10 is a square steel plate with a side length of 40 cm and a thickness of 2 cm, which is placed on the upper surface of the steel section 11 and has steel sleeves 9 at the four corners.

[0028] The steel bar sleeve 9 has a height of 6 cm and an inner diameter of 2 cm, which matches the diameter of the vertical threaded steel bar 1 .

[0029] The length of the vertical threaded steel bar 1 is the sum of the thickness of the upper pads 2 and the pad core 4, and the diameter is 2 cm.

[0030] The outer contour length of the steel section 11 is 2m, the width is 60cm, and the height is 60cm-100cm, and it is used to support the upper structure.

[0031] The length of the transverse positioning baffle 5 is 80 cm, the height is 10 cm, and the thickness is 1 cm to 2 cm. The inner side spacing between the two transverse positioning baffles 5 is 40 cm, which is the side length of the lower pad 10 , and the lower pad 10 is clamped.

[0032] The hole diameter of the transverse reserved holes 8 is 20 mm to 25 mm, and the hole spacing is 4 cm to 6 cm.

[0033] The longitudinal capped threaded steel bar 7 has a length of 45 cm to 50 cm and a diameter of 2 cm. It passes through the transverse reserved hole 8 and is fixed to the nut 6 with an inner diameter of 2 cm.

[0034] The present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modification and substitution of the present invention is also within the scope of the present invention. Therefore, any equivalent transformation and modification made without departing from the spirit and scope of the present invention should be included in the scope of the present invention.

Claims

1. A three-way fixed high-lift pad structure used in bridge jacking engineering, characterized in that: The invention comprises an upper pad (2), a lower pad (10) and a transverse positioning baffle (5); the upper pad (2) is provided with vertical reserved holes (3) at four corners, and a cushion core (4) is provided on the lower surface; the lower pad (10) is placed on the upper surface of the steel section (11), and steel sleeves (9) are provided at four corners of the lower pad (10); a plurality of upper pads (2) and cushion cores (4) are alternately stacked, and vertical threaded steel bars (1) pass through the vertical reserved holes (3) and are tightened and fixed with the steel sleeves (9); the transverse positioning baffle (5) is provided with transverse reserved holes (8), and longitudinal threaded steel bars with caps (7) pass through the transverse reserved holes (8) and are tightened and fixed with nuts (6).

2. A three-way fixed high-lift pad structure used in bridge jacking engineering according to claim 1, characterized in that: The upper pad (2) is a square steel plate with a side length of 40 cm and a thickness of 2 cm, and is provided with vertical reserved holes (3) at the four corners, and the diameter of the holes is 2 cm.

3. The three-way fixed high-lift pad structure used in bridge jacking engineering according to claim 1 is characterized in that: The cushion core (4) is formed by splicing four square steel plates with a side length of 15 cm and a thickness of 6 cm.

4. The three-way fixed high-lift pad structure used in bridge jacking engineering according to claim 1 is characterized in that: The bottom plate (10) is a square steel plate with a side length of 40 cm and a thickness of 2 cm, which is placed on the upper surface of the steel section (11) and has steel sleeves (9) at the four corners.

5. The three-way fixed high-lift pad structure used in bridge jacking engineering according to claim 1 is characterized in that: The steel bar sleeve (9) has a height of 6 cm and an inner diameter of 2 cm, which matches the diameter of the vertical threaded steel bar (1).

6. The three-way fixed high-lift pad structure used in bridge jacking engineering according to claim 1 is characterized in that: The length of the vertical threaded steel bar (1) is the sum of the thicknesses of the upper pads (2) and the pad core (4), and the diameter is 2 cm.

7. The three-way fixed high-lift pad structure used in bridge jacking engineering according to claim 1 is characterized in that: The profiled steel (11) has an outer contour length of 2m, a width of 60cm and a height of 60cm to 100cm and is used to support the upper structure.

8. The three-way fixed high-lift pad structure used in bridge jacking engineering according to claim 1 is characterized in that: The transverse positioning baffle (5) has a length of 80 cm, a height of 10 cm, and a thickness of 1 cm to 2 cm. The inner spacing between the front and rear transverse positioning baffles (5) is 40 cm, which is the side length of the lower pad (10), and the lower pad (10) is clamped.

9. The three-way fixed high-lift pad structure used in bridge jacking engineering according to claim 1 is characterized in that: The hole diameter of the transverse reserved holes (8) is 20 mm to 25 mm, and the hole spacing is 4 cm to 6 cm.

10. The three-way fixed high-lift pad structure used in bridge jacking engineering according to claim 1 is characterized in that: The longitudinal capped threaded steel bar (7) has a length of 45 cm to 50 cm and a diameter of 2 cm, and passes through a transverse reserved hole (8) and is fixed to a nut (6) with an inner diameter of 2 cm.

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