Prefabricated T-beam pedestal

Abstract

The utility model discloses a prefabricated T-beam pedestal which comprises a foundation pedestal body, expanded foundations arranged at the bottoms of the two ends of the foundation pedestal body, a plurality of grooves formed in the two ends and the middle of the foundation pedestal body, gradient adjusting structures fixed in the grooves and a supporting and hoisting structure. The supporting and hoisting structure comprises a plurality of supporting screw rods fixedly supported at the bottom of the groove, supporting tables which are assembled at the upper ends of the supporting screw rods and have I-shaped sections, and hoisting plates which are supported and placed through the supporting tables and are provided with hoisting lugs. According to the prefabricated T-beam pedestal, the inclination angle can be conveniently adjusted to meet the prefabricated gradient of a T-beam, the applicability is wide, and the installation precision of the prefabricated T-beam is guaranteed; the foundation is expanded to ensure that the foundation pedestal has enough bearing capacity and stability, and the situation that after the prestress T beam is tensioned, the two ends of the foundation pedestal are unstable due to concentrated loads is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a precast T-beam pedestal. Background Technique

[0002] In the process of bridge engineering construction, T-beams are widely used due to their large flexural strength, strong spanning ability, light weight, etc. The precast of T-beams is generally completed in a precast yard. Multiple precast pedestals are set up in the precast yard according to construction needs. Steel bar binding, formwork installation, and concrete pouring are carried out on the pedestals to complete the precast of T-beams.

[0003] As the foundation for the formation of T-beams, the accuracy and stability of the precast pedestal of T-beams directly affect the quality and construction efficiency of T-beams. When the elevation is controlled by a vertical curve, the longitudinal slope of each span of the precast T-beams of the approach bridge is inconsistent, and it is difficult to control the longitudinal slope of the embedded steel plate at the bottom of the beam (equivalent to a wedge block), which directly determines the close-fitting degree between the embedded steel plate at the bottom of the beam and the bearing, affecting the installation accuracy of the precast T-beams. If the conventional construction process is followed, the beam-making pedestal needs to be adjusted after each precast span of T-beams, which will result in low utilization rate of the pedestal, affecting the project construction progress and cost; moreover, the process of hoisting and transferring precast T-beams is very complicated, which is not conducive to construction. Content of the Utility Model

[0004] In view of this, the utility model provides a precast T-beam pedestal, which can conveniently adjust the slope and has good structural stability.

[0005] The utility model solves the above problems through the following technical means:

[0006] The precast T-beam pedestal of the utility model includes a foundation pedestal, enlarged foundations arranged at both ends of the bottom of the foundation pedestal, a plurality of grooves arranged at both ends and the middle of the foundation pedestal, a slope adjustment structure and a support and hoisting structure fixed in the plurality of grooves;

[0007] The support and hoisting structure includes a plurality of support screws fixedly supported at the bottom of the groove, a support table with an "I"-shaped cross-section assembled at the upper end of the support screw, and a hoisting plate provided with lifting lugs supported and placed by the plurality of support tables.

[0008] Preferably, the support and hoisting structures at both ends are located inside the slope adjustment structure.

[0009] Preferably, the bottom of the groove is provided with pedestal embedded steel plates for fixing the slope adjustment structure and the support and hoisting structure.

[0010] Preferably, the slope adjustment structure includes a fixed table plate fixed at the upper end of the pedestal embedded steel plate, and a movable table plate assembled at the upper end of the fixed table plate through a plurality of sets of threaded rods and nuts.

[0011] Preferably, the fixed platen is fixedly connected to the embedded steel plate of the pedestal by intermittent welding.

[0012] Preferably, the connection height between the lifting plate and the movable platen is the same and is smoothly connected to the upper surface of the foundation pedestal, and the embedded steel plate at the bottom of the T-beam is arranged at the upper ends of the lifting plate and the movable platen.

[0013] As a further improvement of the above technical solution, a spraying structure for watering and curing the T-beam after pouring is provided at the lower part of the foundation pedestal.

[0014] Preferably, the spraying structure includes a water supply main line longitudinally passing through the center line of the foundation pedestal, a plurality of telescopic pipe branch lines communicating with the water supply main line and extending out of the foundation pedestal to both sides, and sector nozzles assembled at the ends of the telescopic pipe branch lines.

[0015] It can be seen from the above technical solutions that the present utility model has the following beneficial effects:

[0016] For the precast T-beam pedestal of the present utility model, the inclination of this part can be adjusted through the slope adjustment structure, so that the inclination angle can be conveniently adjusted to meet the precast slope of the T-beam, with wide applicability and ensuring the installation accuracy of the precast T-beam; the enlarged foundations provided at the bottoms of both ends of the foundation pedestal ensure that the foundation pedestal has sufficient bearing capacity and stability, preventing the two ends of the foundation pedestal from becoming unstable due to concentrated loads after the prestressed T-beam is tensioned; the support and lifting structure can not only be used as a support structure to smoothly connect the slope adjustment structure and the upper surface of the foundation pedestal, but also its lifting plate can directly be used as the bottom sling for lifting the T-beam, making the lifting operation safe, simple and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the precast T-beam pedestal of the present utility model;

[0018] Figure 2 is a schematic structural diagram of the spraying structure of the precast T-beam pedestal of the present utility model.

[0019] Such as Figure 1 、 Figure 2 , foundation pedestal - 1, enlarged foundation - 2, groove - 3, slope adjustment structure - 4, fixed platen - 41, threaded rod - 42, nut - 43, movable platen - 44, support and lifting structure - 5, support screw - 51, support platform - 52, lifting lug - 53, lifting plate - 54, embedded steel plate of pedestal - 6, embedded steel plate at the bottom of beam - 7, spraying structure - 8, water supply main line - 81, telescopic pipe branch line - 82, sector nozzle - 83. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0021] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0022] The following will describe the present utility model in detail with reference to the drawings, as Figure 1 shown: The precast T-beam pedestal described in this embodiment includes a basic pedestal 1, enlarged footings 2 made of reinforced concrete provided at the bottoms of both ends of the basic pedestal 1, a plurality of grooves 3 provided at both ends and the middle part of the basic pedestal 1, a slope adjustment structure 4 fixed in the plurality of grooves 3, and a support and hoisting structure 5; the support and hoisting structure 5 includes a plurality of support screws 51 fixedly supported at the bottom of the groove 3, a support platform 52 with an "I"-shaped cross-section assembled at the upper end of the support screw 51, and a hoisting plate 54 provided with a lifting lug 53 supported and placed by the plurality of support platforms 52.

[0023] For the precast T-beam pedestal described in this embodiment, the inclination of this part can be adjusted through the slope adjustment structure 4, so that the inclination angle can be conveniently adjusted to meet the precast slope of the T-beam, with wide applicability and ensuring the installation accuracy of the precast T-beam; the reinforced concrete enlarged footings 2 provided at the bottoms of both ends of the basic pedestal 1 ensure that the basic pedestal 1 has sufficient bearing capacity and stability, preventing the two ends of the basic pedestal 1 from becoming unstable due to concentrated loads after the prestressed T-beam is tensioned; the support and hoisting structure 5 can not only serve as a support structure to smoothly connect the slope adjustment structure 4 and the upper surface of the basic pedestal 1, but also its hoisting plate 54 can directly serve as the bottom sling for hoisting to hoist the T-beam, making the hoisting operation safe, simple and fast.

[0024] As a preferred implementation of the above technical solution, the support and hoisting structures 5 at both ends are located inside the slope adjustment structure 4, facilitating the slope adjustment of the T-beam ends.

[0025] As a preferred embodiment of the above technical solution, a pedestal embedded steel plate 6 for fixing the slope adjusting structure 4 and the support and hoisting structure 5 is provided at the bottom of the groove 3. The structural fixation through the pedestal embedded steel plate 6 is more stable and firm.

[0026] As a preferred embodiment of the above technical solution, the slope adjusting structure 4 includes a fixed base plate 41 fixed to the upper end of the pedestal embedded steel plate 6, and a movable base plate 44 assembled on the upper end of the fixed base plate 41 through a plurality of groups of threaded rods 42 and nuts 43. The support height is changed by adjusting the position of the nut 43 on the threaded rod 42, so as to conveniently change the inclination of the movable base plate 44.

[0027] As a preferred embodiment of the above technical solution, the fixed base plate 41 and the pedestal embedded steel plate 6 are connected and fixed by intermittent welding, ensuring the stability and accuracy of the slope adjusting structure 4 during the prefabrication of the T-beam.

[0028] As a preferred embodiment of the above technical solution, the connection height between the lifting lug 53 plate and the movable base plate 44 is the same and is smoothly connected to the upper surface of the foundation pedestal 1. The bottom embedded steel plate 7 of the T-beam is arranged at the upper ends of the lifting plate 54 and the movable base plate 44. The setting of the bottom embedded steel plate 7 of the T-beam can protect the two end parts of the beam body during the prefabrication of the T-beam, disperse the concentrated load at the end parts. During the hoisting process, the bottom embedded steel plate 7 of the T-beam is exactly above the lifting plate 54, so as to further protect the beam body. During the installation process, it can be better connected and fixed with the bearing, and the construction is simple.

[0029] As a further improvement of the above technical solution, a spraying structure 8 for sprinkling and curing the T-beam after pouring is provided at the lower part of the foundation pedestal 1, which can automatically sprinkle and cure the T-beam as required. Specifically, as Figure 2 shown, the spraying structure 8 includes a water supply main line 81 longitudinally passing through the center line of the foundation pedestal 1, a plurality of telescopic pipe branch lines 82 communicating with the water supply main line 81 and extending out of the foundation pedestal 1 on both sides, and a sector-shaped nozzle 83 assembled at the end of the telescopic pipe branch line 82. After spraying, the telescopic pipe can push the sector-shaped nozzle 83 into the foundation pedestal 1 to avoid scratching and damaging people or objects by the protrusions exposed on both sides of the foundation pedestal 1. It is convenient to use and has high safety.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A prefabricated T-beam pedestal, characterized in that: It includes a basic pedestal, an enlarged foundation arranged at the bottom of both ends of the basic pedestal, a plurality of grooves arranged at the two ends and the middle of the basic pedestal, a slope adjustment structure fixed in the plurality of grooves, and a supporting hoisting structure; The support and lifting structure includes a plurality of support screws fixedly supported at the bottom of the groove, a support platform with an I-shaped cross section mounted on the upper end of the support screws, and a lifting plate with lifting ears supported and placed by the plurality of support platforms.

2. The prefabricated T-beam pedestal according to claim 1, characterized in that: The supporting and hanging structures at both ends are located inside the slope adjustment structure.

3. The prefabricated T-beam pedestal according to claim 1, characterized in that: The bottom of the groove is provided with a pedestal embedded steel plate for fixing the slope adjustment structure and the supporting hoisting structure.

4. The prefabricated T-beam pedestal according to claim 3, characterized in that: The slope adjustment structure comprises a fixed platform fixed to the upper end of the pre-embedded steel plate of the pedestal, and a movable platform assembled to the upper end of the fixed platform through a combination of multiple sets of threaded rods and nuts.

5. The prefabricated T-beam pedestal according to claim 4, characterized in that: The fixed platform plate and the pre-buried steel plate of the pedestal are connected and fixed by continuous welding.

6. The prefabricated T-beam pedestal according to claim 4, characterized in that: The connection between the hoisting plate and the movable platform is at the same height and is smoothly connected to the upper surface of the basic pedestal, and the embedded steel plate at the bottom of the T-beam is arranged at the upper ends of the hoisting plate and the movable platform.

7. The prefabricated T-beam pedestal according to claim 1, characterized in that: The lower part of the basic pedestal is provided with a spraying structure for watering and curing the T-beam after casting.

8. The prefabricated T-beam pedestal according to claim 7, characterized in that: The spraying structure includes a water supply bus that passes vertically through the center line of the base, a plurality of telescopic pipe branches that are connected to the water supply bus and extend to both sides of the base, and a fan-shaped nozzle installed at the end of the telescopic pipe branch.

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