Underpinning support

Abstract

The utility model discloses an underpinning support, which relates to the technical field of jacking supports and comprises a net rack component, a jack and a jacking component. The net rack assembly comprises a hinge ball, a stiffening plate, a chord member and a support bottom plate, and the support bottom plate is connected with a steel plate at the top of the structural column; the jacking assembly comprises jacking plates and jacking pieces, the jacking plates are located on the two sides of the stiffening plate, and the jacking pieces are fixedly connected with the jacking plates; the jacking plates are symmetrically or asymmetrically located on the periphery of the hinge ball. The jack abuts against the jacking piece and the structural column. Jacking plates (back to back) are welded to stiffening ribs of an original bolt ball to serve as supporting points for underpinning of a jack support, construction is convenient and fast, meanwhile, the manufacturing cost is reduced, and the problems that a jack supporting point cannot be found on the original bolt ball conventionally, and meanwhile chord members and web members on the periphery of the bolt ball cannot serve as jacking supporting points are solved. Jacking and underpinning do not influence original structural members, do not have any influence on the performance of the original structural members and the support, and do not generate secondary internal force on the original structure.

Description

Technical Field

[0001] The utility model relates to the technical field of jacking supports, in particular to a support support. Background Art

[0002] Among the grid supports that have been installed, various factors have caused the hinged supports to deform to varying degrees due to defects in the quality of the supports themselves, deviations in construction quality, the impact of temperature stress on over-long structures, and damage to the structures after earthquakes. Temperature stresses must be released to reduce the impact of internal forces on the upper structures, so the original supports must be replaced.

[0003] Since the conventional grid support and the original structure are basically welded with the original bolt ball node bottom plate steel plate through anchor bolts and transition steel plates, the connection is firm. The difficulty of underpinning is that the bolt ball or welded ball has no underpinning support point. If the support point is selected on the chord or web, the chord and web are thin and cannot withstand the support force of the jack; since the chord and web cannot withstand the support force of the jack, the bolt ball (welded ball) has no support point, so underpinning is very difficult. Utility Model Content

[0004] The main purpose of the utility model is to provide a replacement support, which is used to solve the problem that it is difficult to support the grid for replacement when replacing the original support in the existing grid support structure.

[0005] To achieve the above object, the utility model provides a support bearing, including a grid assembly, wherein the grid assembly includes a hinge ball, a stiffening plate arranged below the hinge ball, a chord rod is arranged on the hinge ball, a support bottom plate is arranged below the stiffening plate, and the support bottom plate is connected to a steel plate at the top of the structural column; and further includes:

[0006] The jacking assembly comprises a jacking plate fixedly connected to the stiffening plate and a jacking piece arranged on the jacking plate; the jacking plate is located on both sides of the stiffening plate, and the jacking piece is fixedly connected to one end of the jacking plate away from the stiffening plate; the jacking plate is symmetrically or asymmetrically located on the periphery of the hinged ball; the jack is respectively abutted against the jacking piece and the structural column.

[0007] As a further improvement of the utility model, the lifting plates are arranged in groups of two and fixedly connected to the stiffening plates, and a spacing is left between the two groups of lifting plates to form an installation space.

[0008] As a further improvement of the utility model, the jacking plates adopt "U"-shaped steel beams, and two groups of jacking plates are fixedly connected to the respective stiffening plates back to back.

[0009] As a further improvement of the utility model, the jacking member includes a jacking block; the jacking block is fixedly arranged at the end of the two groups of jacking plates away from the stiffening plate.

[0010] As a further improvement of the utility model, the lifting plate is arranged in an "I" shape, a "X" shape or a "T" shape.

[0011] The beneficial effects of the utility model are embodied in:

[0012] By welding a lifting plate (back to back) on the stiffening rib of the original bolt ball as a fulcrum for the replacement of the jack support, the construction is convenient and quick, while reducing the cost, and solving the problem that it is conventionally impossible to find a jack support point on the original bolt ball and that the chord and web bars around the bolt ball cannot be used as lifting support points.

[0013] Jacking and replacement will not affect the original structural components, will not have any impact on the performance of the original structural components and supports, and will not generate secondary internal forces on the original structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a support support of the utility model;

[0015] Figure 2 It is a top view of a support support of the utility model;

[0016] Description of reference numerals:

[0017] 1. Articulated ball; 2. Stiffening plate; 3. Chord; 4. Support base plate; 5. Structural column; 6. Steel plate; 7. Lifting plate; 8. Lifting piece; 9. Jack; 10. Installation space. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] For example, see Figure 1 , 2 The utility model discloses a support support, comprising a grid assembly, a jack 9 and a lifting assembly.

[0020] Among them, the grid assembly includes an articulated ball 1, a stiffening plate 2 arranged below the articulated ball 1, a chord 3 is arranged on the articulated ball 1, a support base plate 4 is arranged below the stiffening plate 2, and the support base plate 4 is connected to the steel plate 6 on the top of the structural column 5; the jacking assembly includes a jacking plate 7 fixedly connected to the stiffening plate 2, and a jacking member 8 arranged on the jacking plate 7, the jacking plate 7 is located on both sides of the stiffening plate 2, and the jacking member 8 is fixedly connected to one end of the jacking plate 7 away from the stiffening plate 2; the jacking plate 7 is symmetrically or asymmetrically located on the periphery of the articulated ball 1; the jack 9 is respectively abutted against the jacking member 8 and the structural column 5.

[0021] For further information, see Figure 2 The lifting plates 7 are arranged in groups of two and fixedly connected to the stiffening plates 2 , and a spacing is left between the two groups of lifting plates 7 to form an installation space 10 .

[0022] Preferably, the lifting plate 7 is fixedly connected to the stiffening plate 2 by welding. The length of the lifting plate 7 is divided into two parts. One part is the welding length with the stiffening plate 2, which should be determined by stress calculation, and the other part is the length from the lifting member 8 (support point) to the stiffening plate 2, which is adjusted according to the actual construction space on site and is very flexible.

[0023] For further information, see Figure 2 The jacking plate 7 adopts a "U"-shaped steel beam, and two groups of jacking plates 7 are fixedly connected to the stiffening plates 2 back to back.

[0024] Preferably, the two groups of lifting plates 7 are located on the same horizontal plane.

[0025] In the above arrangement, two groups of "U"-shaped steel beams are fixedly connected back to back with the stiffening plate 2 by welding. The "U"-shaped steel beam is an existing structure and is easy to obtain. The "U"-shaped steel beam is cut according to the required length before welding. The "U"-shaped lifting plate 7 has high overall strength and is more firmly welded to the stiffening plate 2 on both sides.

[0026] For further information, see Figure 2 The jacking member 8 includes a jacking block, which is fixedly arranged at the end of the two groups of jacking plates 7 away from the stiffening plate 2.

[0027] Preferably, the lifting block is located in the installation space 10 between the two groups of lifting plates 7, and the lifting block is fixedly connected to the two groups of lifting plates 7 by welding.

[0028] In the above arrangement, the jacking block and the jacking plates 7 on both sides of the jacking block are in contact with the jacks 9, and the jacks 9 provide support for the grid.

[0029] For further information, see Figure 1 , 2 The lifting plate 7 is arranged in a straight line, a cross or a T shape.

[0030] Preferably, the lifting plates 7 are welded to the two groups of stiffening plates 2 in the same direction to form a "I" shape.

[0031] Preferably, the lifting plate 7 is welded to the four groups of stiffening plates 2 along two mutually perpendicular lines to form a "cross" shape.

[0032] Preferably, the lifting plate 7 is welded to the three groups of stiffening plates 2 along two mutually perpendicular lines to form a "T" shape.

[0033] In the above arrangement, the number of jacking plates 7 is increased or decreased, thereby increasing or decreasing the number of jacking blocks (i.e., supporting points), thereby controlling the number of jacks 9. The position and number of jacking plates 7 are reasonably arranged according to the load capacity of the grid and the on-site construction space to ensure that the grid is supported while facilitating operation.

[0034] In this embodiment, a U-shaped steel beam (back to back) is welded on the stiffening plate 2 of the bolt ball as a supporting point for the jack 9 support. The U-shaped steel beam and the stiffening plate 2 are welded on three sides. The welding length of the U-shaped steel beam and the stiffening plate 2 should be determined by calculation. The length of the support point is adjusted according to the actual construction space on site, which is very flexible. Two-side support points, three-side support points, and four-side support points can be set according to the force requirements to form a stable vertical force support point.

[0035] The stiffening ribs and bolt balls are connected by welding. The first step of construction: first weld the stiffening plate 2 on the top support of the structural column 5 for temporary support, weld the U-shaped steel beam on both sides, and use two-side support or three-side support depending on the situation; the second step of construction: after the welding construction of the U-shaped steel beam is completed, use the jack 9 to support the U-shaped steel beam, and at the same time, each jack 9 applies a pre-reaction force, the size of which can be estimated from the upper structure load calculation; the third step of construction: cut the support bottom plate 4 under the bolt ball, cut off the welded steel plate 6 and anchor bolts on the top of the structural column 5, and plane the steel plate 6 on the top of the structural column 5 and the steel plate 6 at the bottom of the stiffening rib plate to make it flat and smooth; the fourth step of construction: install the replacement support, weld it around the upper and lower steel plates 6, and finally cut the temporary U-shaped steel beam, and retain the welding part between the U-shaped steel beam and the stiffening plate 2.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A support bearing, comprising a grid assembly and a jack (9), wherein the grid assembly comprises a hinge ball (1), a stiffening plate (2) arranged below the hinge ball (1), a chord (3) being arranged on the hinge ball (1), a support base plate (4) being arranged below the stiffening plate (2), and the support base plate (4) being connected to a steel plate (6) at the top of a structural column (5); characterized in that: Also includes: A jacking assembly comprises a jacking plate (7) fixedly connected to a stiffening plate (2) and a jacking member (8) arranged on the jacking plate (7); the jacking plate (7) is located on both sides of the stiffening plate (2), and the jacking member (8) is fixedly connected to one end of the jacking plate (7) away from the stiffening plate (2); the jacking plate (7) is symmetrically or asymmetrically located on the periphery of a hinge ball (1); and the jack (9) is respectively in contact with the jacking member (8) and the structural column (5).

2. A support according to claim 1, characterized in that: The lifting plates (7) are arranged in groups of two and fixedly connected to the stiffening plates (2), and a spacing is left between the two groups of lifting plates (7) to form an installation space (10).

3. A support according to claim 2, characterized in that: The lifting plates (7) are U-shaped steel beams, and two groups of lifting plates (7) are fixedly connected to the stiffening plates (2) back to back.

4. A support according to claim 3, characterized in that: The lifting member (8) comprises a lifting block; the lifting block is fixedly arranged at the end of the two groups of lifting plates (7) away from the stiffening plate (2).

5. A support according to claim 4, characterized in that: The lifting plate (7) is arranged in a straight line, a cross or a T shape.

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