Column foot sliding connection support of steel silo

Abstract

The utility model relates to the technical field of steel silos, and discloses a column foot sliding connection support of a steel silos, which comprises a lower foundation and a bottom plate, the inner wall of the lower foundation is fixedly connected with a plurality of anchor bolts, the outsides of the anchor bolts are all in threaded connection with bolts, the other ends of the bolts are in threaded connection with a base plate, and the base plate is in threaded connection with the bottom plate. A long round hole is formed in the bottom plate, the outer portion of the anchor bolt is movably connected to the inner portion of the long round hole, an embedded steel plate is fixedly installed on the inner wall of the lower foundation, and the outer portion of the anchor bolt is movably connected to the inner wall of the embedded steel plate. According to the utility model, the slotted holes are formed in the bottom to be matched with the anchor bolts, so that the radial displacement of the bottom is released, the displacement change of the silo wall along the vertical direction is more uniform, the stress concentration and buckling failure of the bottom are prevented, and the safety reserve of the structure is increased.

Description

Technical Field

[0001] This utility model relates to the field of steel silo technology, and in particular to a column base sliding connection support for steel silos. Background Technology

[0002] Currently, steel silos are generally connected to their column bases in two ways: rigid and hinged. The bottom embedded parts are typically connected to the foundation using anchor bolts or pre-embedded anchor bars. A steel silo is a unique load-bearing structure, primarily subjected to the load of the stored material. This load not only transmits a significant vertical load to the foundation but also exerts horizontal pressure on the silo walls. This horizontal pressure creates circumferential tensile stress within the walls. Furthermore, friction between the stored material and the contact surface generates vertical frictional forces on the walls. These vertical forces create substantial reaction forces at the lower support locations. Simultaneously, due to the horizontal pressure, the stress at the column bases of the steel silo is complex, making the design of the column base supports crucial and directly impacting the silo's structural safety.

[0003] Some silos use rigid or hinged connections at the bottom. This connection method restricts the radial displacement of the silo bottom, which causes the resultant force on the silo wall at the bottom to no longer be vertical, but at an angle to the vertical.

[0004] In the prior art, as the storage load continues to increase, and considering earthquakes, the radial displacement of the silo wall will become increasingly larger. With the increase of radial displacement, severe local bending will occur at the bottom of the silo. Due to excessive local bending, the steel silo enters an elastoplastic buckling state, which leads to the failure of the silo's column base. To address this problem, a sliding connection support for the column base of the steel silo is proposed. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a sliding connection support for the column base of a steel silo, which aims to improve the problem in the prior art where, with the increase of storage load and the impact of earthquakes, the radial displacement of the steel silo wall increases, the bottom of the silo is severely locally bent, causing it to enter an elastoplastic buckling state, and ultimately leading to the failure of the column base.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A sliding connection support for the column base of a steel silo includes a lower foundation and a base plate. Multiple anchor bolts are fixedly connected to the inner wall of the lower foundation. Bolts are threaded onto the outer surfaces of each anchor bolt, and a washer is threaded onto the other end of each bolt. An elongated hole is provided inside the base plate, and the anchor bolts are movably connected to the interior of this hole. An embedded steel plate is fixedly installed on the inner wall of the lower foundation, and the anchor bolts are movably connected to the inner wall of this embedded steel plate. A welded assembly, fastened together, is fixedly connected to the top of the base plate.

[0008] As a further description of the above technical solution:

[0009] The welding assembly includes vertical stiffening ribs, with folded plates welded inside the vertical stiffening ribs. The bottom of the vertical stiffening ribs contacts the top of the base plate, and a bin wall is welded to the outside of the vertical stiffening ribs. Rib plates are welded to the outside of the bin wall.

[0010] As a further description of the above technical solution:

[0011] The multiple elongated holes are evenly distributed around the perimeter of the bin wall according to the bolt spacing. The length of the elongated holes should be calculated to meet the deformation requirements under different working conditions.

[0012] As a further description of the above technical solution:

[0013] The anchor bolt is equipped with a pad, which is disposed between the base plate and the nut.

[0014] As a further description of the above technical solution:

[0015] The height of the folding plate should be higher than the end height of the anchor bolt, and all components except the lower foundation should be made of steel.

[0016] This utility model has the following beneficial effects:

[0017] 1. In this utility model, by setting an elongated hole at the bottom to cooperate with the anchor bolt, the radial displacement at the bottom is released, making the vertical displacement of the silo wall more uniform, preventing stress concentration at the bottom and buckling failure, and increasing the safety reserve of the structure.

[0018] 2. In this utility model, by setting a folding plate, it is ensured that the stored material can avoid entering the gap and affecting it during the process of releasing the constraint of the silo, thus ensuring the timeliness of the displacement release of the silo.

[0019] 3. In this utility model, the design of the sliding support can reduce the thickness of the bottom wall plate compared with the previous silo design, thereby saving engineering investment and improving the economic benefits of the project. Attached Figure Description

[0020] Figure 1 This is a front view of a column base sliding connection support for a steel silo proposed in this utility model;

[0021] Figure 2 This is a top view of a sliding connection support for the column base of a steel silo proposed in this utility model.

[0022] Legend:

[0023] 1. Silo wall; 2. Ribs; 3. Vertical stiffening ribs; 4. Folded plate; 5. Pad plate; 6. Base plate; 7. Embedded steel plate; 8. Anchor bolts; 9. Substructure. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figures 1 to 2 This utility model provides an embodiment comprising a lower foundation 9 and a base plate 6. Multiple anchor bolts 8 are fixedly connected to the inner wall of the lower foundation 9, and bolts are threaded onto the exterior of each anchor bolt 8. A pre-embedded steel plate 7 is fixedly installed on the inner wall of the lower foundation 9, and the anchor bolts 8 are movably connected to the inner wall of the pre-embedded steel plate 7. The anchor bolts 8 are pre-embedded within the lower foundation 9, and an installation position is provided on the upper part of the bolts for installing a washer 5 and a nut. A welded assembly, including vertical stiffening ribs 3, is fixedly connected to the top of the base plate 6. The welded assembly includes vertical stiffening ribs 3, and a folded plate 4 is welded inside the vertical stiffening ribs 3. The height of the folded plate 4 should be higher than the end height of the anchor bolts 8. The folded plate 4 is provided on the inner side of the silo wall 1 to ensure the vertical continuity of the silo body and prevent the storage material from affecting it during silo deformation. The bottom of the vertical stiffening rib 3 is in contact with the top of the bottom plate 6. The outer side of the vertical stiffening rib 3 is welded with a bin wall 1, and the outer side of the bin wall 1 is welded with a rib plate 2. The bin wall 1 and the rib plate 2 are connected by welding.

[0026] Multiple bolts have threaded connections to washers 5 at their other ends. An elongated holes are provided inside the base plate 6. Anchor bolts 8 are externally and movably connected to the inside of these elongated holes. Elongated holes are evenly distributed around the circumference of the base plate 6, forming a sliding support for the column base. Multiple elongated holes are evenly distributed around the circumference of the silo wall 1 according to the bolt spacing. The length of the elongated holes should be calculated to meet deformation requirements under different working conditions. The major axis of the elongated holes is radially aligned with the silo. Anchor bolts 8 are equipped with washers 5, which are positioned between the base plate 6 and the nut. Washers 5 and base plate 6 should not be welded. During installation, the nut should not be overtightened to prevent it from obstructing the radial release of constraints from the column base silo wall 1. The horizontal and vertical sections of the partition are welded to the silo wall 1, ribs 2, and vertical stiffening ribs 3 to ensure a closed space, preventing stored material from entering the elongated holes and affecting the radial release of constraints from the support. All components, except the lower foundation 9, are made of steel.

[0027] Working principle: By setting elongated holes at the bottom of the steel silo and at the bottom plate 6, a sliding support for the column base is formed. By designing the column base as a sliding support, horizontal displacement can be released, ensuring that the resultant force on the bottom of the silo wall 1 is always in the vertical direction. This better utilizes the material's strength, prevents premature buckling and failure, and achieves the goals of saving investment and increasing structural safety reserves. A folded plate 4 is installed on the inner side of the silo wall 1 to ensure the vertical continuity of the silo and prevent the stored material from affecting it during silo deformation.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A column base sliding connection support for a steel silo, comprising a lower foundation (9) and a bottom plate (6), characterized in that: The inner wall of the lower foundation (9) is fixedly connected with multiple anchor bolts (8), and the outer side of each anchor bolt (8) is threaded with a bolt. The other end of each bolt is threaded with a washer (5). The bottom plate (6) is provided with an elongated hole. The outer side of the anchor bolt (8) is movably connected to the inside of the elongated hole. The inner wall of the lower foundation (9) is fixedly installed with a pre-embedded steel plate (7). The outer side of the anchor bolt (8) is movably connected to the inner wall of the pre-embedded steel plate (7). The top of the bottom plate (6) is fixedly connected with a welded assembly that is fastened together.

2. The column base sliding connection support for a steel silo according to claim 1, characterized in that: The welding assembly includes a vertical stiffening rib (3), a folded plate (4) is welded inside the vertical stiffening rib (3), the bottom of the vertical stiffening rib (3) is in contact with the top of the bottom plate (6), a bin wall (1) is welded to the outside of the vertical stiffening rib (3), and a rib plate (2) is welded to the outside of the bin wall (1).

3. The column base sliding connection support for a steel silo according to claim 2, characterized in that: Multiple elongated holes are evenly distributed around the perimeter of the bin wall (1) according to the bolt spacing. The length of the elongated holes should be calculated to meet the deformation requirements under different working conditions.

4. The column base sliding connection support for a steel silo according to claim 1, characterized in that: The anchor bolt (8) is equipped with a pad (5), which is disposed between the base plate (6) and the nut.

5. The column base sliding connection support for a steel silo according to claim 2, characterized in that: The height of the folding plate (4) should be higher than the end height of the anchor bolt (8), and all components except the lower foundation (9) should be made of steel.

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