Inclined leg type steel pipe support for continuous box girder 0 # block construction

Abstract

The utility model relates to the technical field of box girder construction, and particularly discloses an inclined leg type steel pipe support for continuous box girder 0 # block construction. The support comprises a support body, the support body comprises a plurality of support assemblies evenly arranged in the transverse bridge direction, a plurality of reinforcing transverse rods used for connecting the support assemblies into the support body are arranged between the support assemblies in the transverse bridge direction, and each support assembly comprises two vertical stand columns with the lower ends connected to the upper portion of a bearing platform and perpendicular to the upper surface of the bearing platform. The support assembly further comprises two inclined stand columns, the lower ends of the inclined stand columns are connected to the upper portion of the bearing platform, the inclined stand columns incline in the direction away from the bearing platform in the longitudinal bridge direction, a plurality of horizontal stand columns used for connecting the vertical stand columns and the inclined stand columns are horizontally arranged between the vertical stand columns and the inclined stand columns, and the support assembly is trapezoid. When the size of a bearing platform cannot meet the requirement for vertical design of the support, the support body composed of the inverted trapezoidal support assemblies is used for completing construction of the continuous box girder 0 # block, extra concrete does not need to be poured to meet the construction condition, and the construction cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to box girder construction technical field, concretely relates to a slant leg formula steel pipe support for continuous box girder 0 block construction. BACKGROUND

[0002] In the construction process of the variable cross-section prestressed concrete continuous box girder, the 0# block construction technology is particularly important, and a steel pipe support form or a bracket form is usually adopted, the bracket form is suitable for the 0# block construction of the pier column with high height, and a steel plate needs to be pre-buried on the pier column in the pier column construction process, thereby affecting the finished appearance quality of the pier body, and the repair difficulty is large, in the highway engineering construction in the plain area, the bridge pier column height is low, and the concrete appearance quality requirement is high, and generally the steel pipe support form is selected, in the support design, the main pier pile cap is often used as the support foundation bearing structure, and when the size of the main pier pile cap cannot satisfy the vertical design of the support, the concrete foundation needs to be additionally poured, and the method greatly increases the construction cost. CONTENT OF THE UTILITY MODEL

[0003] The utility model provides a slant leg formula steel pipe support for continuous box girder 0 block construction, which can overcome certain or some defects of the prior art.

[0004] According to the slant leg formula steel pipe support for continuous box girder 0 block construction, the support body is composed of inverted trapezoidal support assemblies, the support body is not required to be poured with additional concrete to satisfy the construction condition, the construction cost is reduced, the design of the support assembly comprises the vertical column and the inclined column, a trapezoidal structure is formed, a plurality of support assemblies are uniformly arranged along the transverse bridge direction, and the reinforcing cross bars are arranged between the support assemblies, load can be effectively dispersed to the whole support structure, the burden of a single support assembly is reduced, the bearing capacity and stability of the whole structure are improved, the support body is prevented from overturning due to external force in the construction process, the lower ends of the vertical column and the inclined column are connected to the upper side of the pile cap, the bearing capacity is transmitted to the pile cap, the pile cap serves as a stable foundation and can provide stable support for the support body, and the stability of the whole structure is further improved.

[0005] Through the utility model, when the size of the pile cap cannot satisfy the vertical design of the support, the support body composed of inverted trapezoidal support assemblies is used to complete the continuous box girder 0 block construction, additional concrete is not required to be poured to satisfy the construction condition, the construction cost is reduced, the design of the support assembly comprises the vertical column and the inclined column, a trapezoidal structure is formed, a plurality of support assemblies are uniformly arranged along the transverse bridge direction, and the reinforcing cross bars are arranged between the support assemblies, load can be effectively dispersed to the whole support structure, the burden of a single support assembly is reduced, the bearing capacity and stability of the whole structure are improved, the support body is prevented from overturning due to external force in the construction process, the lower ends of the vertical column and the inclined column are connected to the upper side of the pile cap, the bearing capacity is transmitted to the pile cap, the pile cap serves as a stable foundation and can provide stable support for the support body, and the stability of the whole structure is further improved.

[0006] As a preferred, the support assembly further comprises a plurality of reinforcing diagonal braces arranged between the vertical columns, the inclined columns and the horizontal columns for reinforcing the support assembly.

[0007] By the utility model, the reinforcing diagonal brace can increase the overall rigidity of the support assembly, prevent relative displacement between the columns, and enhance the stability of the entire support assembly; the reinforcing diagonal brace can also share part of the load borne by the vertical columns and the horizontal columns, reduce the pressure on these columns, and prolong the service life thereof; when the support assembly is subjected to external force, the reinforcing diagonal brace can effectively reduce the deformation of the structure, maintain the geometric shape and structural integrity of the support, thereby reducing the safety risk in the construction process, protecting the safety of the construction personnel, and improving the safety of the construction site; further, the support assembly is arranged to pass through the interior of the pier column, the horizontal column of the support assembly passes through the interior of the pier column, and the support assembly at the position passing through the pier column is not provided with a reinforcing diagonal brace, and the interior of the pier column is provided with a PVC embedded pipe for the horizontal column to pass through.

[0008] As a preferred, the top end of the inclined column is provided with a sand box, the top and bottom of the sand box are provided with support steel plates, the top end of the vertical column is provided with a support steel plate, and the support steel plate at the top of the sand box and the support steel plate at the top end of the vertical column are provided with an I-beam.

[0009] By the utility model, the sand box can be filled or emptied with sand, thereby adjusting the height thereof, adapting to different construction height requirements, improving the flexibility of construction, and being more convenient and fast to remove the support body after the 0# block of the continuous box girder is constructed; the I-beam is used to uniformly transmit the load from above the I-beam to the support body, ensure uniform distribution of force, and avoid dangerous accidents caused by concentrated load.

[0010] As a preferred, the bottom end of the vertical column and the inclined column is welded with a pre-embedded steel plate, a plurality of mounting holes are arranged around the pre-embedded steel plate, and expansion bolts for fixing the pre-embedded steel plate and the pile cap are arranged at the positions of the mounting holes.

[0011] By the utility model, the pre-embedded steel plate and the pile cap are fixed through the expansion bolts, a relatively firm connection can be provided, the connection strength of the support body and the pile cap is enhanced, displacement caused by vibration or other factors during construction is avoided; the mounting holes arranged on the pre-embedded steel plate make the installation of the support body more convenient and fast, and the expansion bolts can also quickly and accurately fix the support body; the design of the mounting holes allows the position of the support body to be finely adjusted during installation, and ensures accurate installation of the support body.

[0012] As a preferred, a plurality of triangular reinforcing ribs are welded between the pre-embedded steel plate and the vertical column and the inclined column.

[0013] The welding of the reinforcing rib in a triangular shape can increase the connecting strength between the stand and the embedded steel plate, provide additional structural support, and prevent damage to the connecting part caused by load action; the addition of the reinforcing rib also helps to improve the stability of the entire support structure, especially when subjected to dynamic load, the reinforcing rib can effectively disperse and transmit these forces.

[0014] Preferably, the support body is made of Q690D steel.

[0015] The support body made of Q690D steel has high strength, so that the support body can bear greater load and is suitable for engineering requiring high bearing capacity; at the same time, it has good welding performance, facilitating on-site welding operation, and can ensure firm connection between support components; the support body 100 made of Q690D steel also has high fatigue resistance and corrosion resistance, can withstand repeated load in the construction process without metal fatigue, and can resist chemical corrosion on the construction site to some extent, facilitating recycling of the support body. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Figure 1 is a schematic view of a diagonal leg type steel pipe support for the 0# block construction of the continuous box girder in Example 1;

[0017] Figure 2 Figure 2 is a schematic view of the embedded steel plate and reinforcing rib in Example 1;

[0018] Figure 3 Figure 3 is a schematic view of the sand box in Example 1;

[0019] Figure 4 Figure 4 is a schematic view of the support body in Example 1;

[0020] Figure 5 Figure 5 is a schematic view of the support assembly in Example 1;

[0021] Figure 6 Figure 6 is a schematic view of the embedded steel plate in Example 1. DETAILED DESCRIPTION

[0022] In order to further understand the content of the present application, the present application will be described in detail in conjunction with the examples. It should be understood that the examples are only used to explain the present application and are not limited.

[0023] Example 1

[0024] As Figures 1-6As shown, the embodiment provides a continuous box girder 0# block construction with an inclined leg type steel pipe support, which comprises a support body 100, the support body 100 comprises a plurality of support assemblies 110 arranged uniformly along the transverse direction of the bridge, a plurality of reinforcing cross bars 120 are arranged between the support assemblies 110 along the transverse direction of the bridge for connecting the support assemblies 110 into the support body 100, the support assembly 110 comprises two vertical columns 210 connected to the upper side of the bearing platform 130 and perpendicular to the upper surface of the bearing platform 130, the support assembly 110 further comprises two inclined columns 220 connected to the upper side of the bearing platform 130 and inclined away from the bearing platform 130 along the longitudinal direction of the bridge, a plurality of horizontal columns 230 are arranged horizontally between the vertical columns 210 and the inclined columns 220 for connecting the vertical columns 210 and the inclined columns 220, and the support assembly 110 is trapezoidal.

[0025] Through the embodiment, when the size of the bearing platform 130 cannot meet the vertical design of the support, the support body 100 composed of inverted trapezoidal support assemblies 110 is used to complete the construction of the continuous box girder 0# block 140, without pouring additional concrete to meet the construction conditions, thereby reducing the construction cost; the design of the support assembly 110 includes the vertical column 210 and the inclined column 220, forming a trapezoidal structure, and by arranging a plurality of support assemblies 110 uniformly along the transverse direction of the bridge and arranging reinforcing cross bars 120 between the support assemblies 110, the load can be effectively dispersed to the entire support structure, reducing the burden of a single support assembly 110, improving the carrying capacity and stability of the overall structure, and preventing the support body 100 from overturning due to external forces during construction; the lower ends of the vertical column 210 and the inclined column 220 are connected to the upper side of the bearing platform 130, which facilitates the transmission of the bearing capacity to the bearing platform 130, and the bearing platform 130 serves as a stable foundation, which can provide stable support for the support body 100, further improving the stability of the overall structure.

[0026] In the embodiment, the support assembly 110 further comprises a plurality of reinforcing inclined braces 240 arranged between the vertical column 210, the inclined column 220 and the horizontal column 230 for reinforcing the support assembly 110.

[0027] Through this embodiment, the reinforcing diagonal brace 240 can increase the overall stiffness of the support assembly 110, prevent relative displacement between the vertical columns, and enhance the stability of the entire support assembly 110; the reinforcing diagonal brace 240 can also share part of the load borne by the vertical columns 210 and the horizontal columns 230, reduce the pressure on these columns, and prolong their service life; when the support assembly 110 is subjected to external forces, the reinforcing diagonal brace 240 can effectively reduce the deformation of the structure, maintain the geometric shape and structural integrity of the support assembly 110, thereby reducing the safety risks during construction, protecting the safety of construction personnel, and improving the safety of the construction site; further, the support assembly 110 is arranged to pass through the interior of the pier column 150, the horizontal column 230 of the support assembly 110 passes through the interior of the pier column 150, and the support assembly 110 at the position passing through the pier column 150 is not provided with a reinforcing diagonal brace 240, and a PVC embedded pipe is arranged in the interior of the pier column 150 for the horizontal column 230 to pass through.

[0028] In this embodiment, the top end of the inclined column 220 is provided with a sand box 310, the sand box 310 is provided with a support steel plate 320 at the top and the bottom, the vertical column 210 is provided with a support steel plate 320 at the top end, and the support steel plate 320 at the top of the sand box 310 and the support steel plate 320 at the top end of the vertical column 210 are provided with an I-beam 330 above.

[0029] Through this embodiment, the sand box 310 can be filled or emptied with sand, thereby adjusting its height, adapting to different construction height requirements, improving the flexibility of construction, and after the continuous box girder 0# block 140 is constructed, the sand in the sand box 310 is discharged, and then the support body 100 is removed, which is relatively convenient and fast; the I-beam 330 is used to uniformly transmit the load from above the I-beam 330 to the support body 100, ensuring uniform distribution of force and avoiding dangerous accidents caused by concentrated load.

[0030] In this embodiment, the vertical column 210 and the inclined column 220 are both welded with a pre-embedded steel plate 410, a plurality of mounting holes 411 are arranged around the pre-embedded steel plate 410, and expansion bolts 420 for fixing the pre-embedded steel plate 410 and the pile cap 130 are arranged at the positions of the mounting holes 411.

[0031] Through this embodiment, the pre-embedded steel plate 410 is fixed with the pile cap 130 through the expansion bolts 420, which can provide a relatively firm connection, enhance the connection strength of the support body 100 and the pile cap 130, and avoid displacement caused by vibration or other factors during construction; the mounting holes 411 arranged on the pre-embedded steel plate 410 make the installation of the support body 100 more convenient and fast, and the expansion bolts 420 can also quickly and accurately fix the support body 100; the design of the mounting holes 411 allows the position of the support body 100 to be fine-tuned during installation, ensuring accurate installation of the support body 100.

[0032] In this embodiment, the embedded steel plate 410 is welded with multiple triangular reinforcing ribs 430 between the vertical column 210 and the inclined column 220.

[0033] Through this embodiment, the welding of the triangular reinforcing ribs 430 can increase the connection strength between the column and the embedded steel plate 410, provide additional structural support, and prevent damage to the connection due to the action of load; the addition of the reinforcing ribs 430 also helps to improve the stability of the entire support structure, especially when subjected to dynamic load, the reinforcing ribs 430 can effectively disperse and transmit these forces.

[0034] In this embodiment, the support body 100 is made of Q690D steel.

[0035] Through this embodiment, the support body 100 made of Q690D steel has high strength, so it can withstand greater load and is suitable for projects that require high bearing capacity; at the same time, it has good welding performance, which is convenient for on-site welding operations, and can ensure the firm connection between the support components 110; the support body 100 made of Q690D steel also has high fatigue resistance and corrosion resistance, can withstand repeated loads during construction without metal fatigue, and can resist chemical corrosion to some extent on the construction site, facilitating the recycling of the support body 100.

[0036] It is easy to understand that, based on one or more embodiments provided in the present application, other embodiments can be obtained by combining, splitting, recombining, etc. of the embodiments of the present application, and these embodiments do not exceed the protection scope of the present application.

[0037] The above describes the present application and its embodiments in a schematic manner, and the description is not restrictive, and the embodiments shown are only part of the embodiments of the present application, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this, without departing from the creative purpose of the present application, without creative design, similar structural modes and embodiments of the technical solutions can be obtained, which should all belong to the protection scope of the present application.

Claims

1. A diagonal leg type steel pipe support for continuous box girder block construction, characterized by: The support body (100) comprises a plurality of support assemblies (110) arranged uniformly along the transverse direction of the bridge, and a plurality of reinforcing cross bars (120) are arranged between the support assemblies (110) along the transverse direction of the bridge to connect the support assemblies (110) into the support body (100), the support assembly (110) comprises two vertical columns (210) connected to the upper side of the deck (130) and perpendicular to the upper surface of the deck (130), and the support assembly (110) further comprises two inclined columns (220) connected to the upper side of the deck (130) and inclined away from the deck (130) along the longitudinal direction of the bridge, a plurality of horizontal columns (230) are arranged horizontally between the vertical columns (210) and the inclined columns (220) to connect the vertical columns (210) and the inclined columns (220), and the support assembly is trapezoidal.

2. The diagonal leg type steel pipe support for the construction of a continuous box girder 0# block according to claim 1, characterized in that: The support assembly (110) further comprises a plurality of reinforcing diagonal braces (240) arranged between the vertical columns (210), the inclined columns (220) and the horizontal columns (230) to reinforce the support assembly (110).

3. The diagonal leg type steel pipe support for the construction of a continuous box girder 0# block according to claim 1, characterized in that: The top end of the inclined column (220) is provided with a sandbox (310), the top and bottom of the sandbox (310) are provided with support steel plates (320), the top end of the vertical column (210) is also provided with a support steel plate (320), and the support steel plate (320) at the top of the sandbox (310) and the support steel plate (320) at the top end of the vertical column (210) are provided with I-beam cross beams (330) above.

4. The diagonal leg type steel pipe support for the construction of a continuous box beam 0# block according to claim 1, characterized in that: The bottom end of the vertical column (210) and the inclined column (220) is welded with a pre-embedded steel plate (410), a plurality of mounting holes (411) are arranged around the pre-embedded steel plate (410), and expansion bolts (420) for fixing the pre-embedded steel plate (410) to the deck (130) are arranged at the positions of the mounting holes (411).

5. The diagonal leg type steel pipe support for the construction of a continuous box beam 0# block according to claim 1, characterized in that: A plurality of triangular reinforcing ribs (430) are welded between the pre-embedded steel plate (410) and the vertical column (210) and the inclined column (220).

6. The diagonal leg type steel pipe support for the construction of a continuous box beam 0# block according to claim 1, characterized in that: The support body (100) is made of Q690D steel.

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