Combined steel column forced sinking construction limiting support device

Abstract

The utility model discloses a combined steel column forced sinking construction limiting support device belongs to building foundation reinforcement engineering technical field, and this device includes the structural column for supporting the building roof, cuts structural column and makes it divide into the two sections of upper and lower interval, and the upper section of connection with the building roof constitutes the steel column, and the horizontal limiting mechanism restricts the steel column horizontal displacement in 5mm, and the synchronous jacking assembly contains double jack and ball hinge support, realizes the jacking height difference and does not exceed 1mm, and the bearing anchoring structure can reliably transfer load, and the utility model solves the uneven stress, horizontal deviation and poor synchronism of steel column forced sinking construction in the prior art, has the advantages of stable structure, accurate limiting, good jacking synchronism and high safety, and is applicable to the forced sinking reinforcement engineering of the uneven settlement of the existing steel column because of the foundation.

Description

Technical Field

[0001] This utility model relates to the field of building foundation reinforcement engineering technology, specifically to a combined limiting support device for forced settlement construction of existing steel columns, which is suitable for building engineering scenarios where steel columns need to be forced to settle and adjusted to restore structural stability due to uneven foundation settlement. Background Technology

[0002] In existing building foundation reinforcement projects, when uneven settlement occurs in the steel column foundation, forced settlement construction is required to adjust the height of the steel columns to restore structural stability. However, existing technologies have many problems in forced settlement construction of steel columns:

[0003] Uneven stress on steel columns: The structural columns (also steel columns) on the original foundation are a single structure and cannot provide uniform support force. Excessive local stress on the steel columns can easily lead to deformation and damage. The lack of uniform stress control measures at the bottom or sides of the steel columns can easily cause local structural damage.

[0004] Horizontal displacement problem: The lack of an effective horizontal limiting device makes the steel columns prone to lateral displacement during construction, leading to structural instability; traditional support devices are insufficient in controlling horizontal displacement, with the displacement reaching more than 10mm, which seriously affects structural safety and construction accuracy.

[0005] Poor synchronization: Traditional forced settlement construction often uses a single jack for lifting, which makes it difficult to achieve simultaneous force application at multiple points. The difference in height between the two sides of the jacking is large, resulting in insufficient forced settlement accuracy. Poor synchronization may also cause the steel column to tilt or twist, affecting the construction quality and structural stability.

[0006] Installation is complex: On-site installation of existing devices requires a large amount of welding work, which results in long construction cycles, low efficiency, and substandard welding quality that can affect the overall structural safety.

[0007] Insufficient load-bearing capacity: Due to the lack of effective stiffening design, some components have poor structural stability under heavy loads, making it difficult to meet the load-bearing requirements of large steel columns forced to sink. Utility Model Content

[0008] This invention aims to overcome the problems of uneven stress, horizontal deviation, and poor synchronization in the forced settlement construction of steel columns in the prior art, and provides a combined limiting support device that integrates stable support, horizontal limiting, and synchronous forced settlement functions. By optimizing the structural design and functional integration, it ensures stable, precise, and efficient adjustment of the steel column during the forced settlement construction process, while improving the safety and efficiency of the construction.

[0009] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0010] This utility model discloses a combined steel column forced settlement construction limiting support device, including a structural column for supporting the building roof. The structural column is cut into two segments, upper and lower, with the upper segment connected to the building roof forming a steel column. Steel brackets are symmetrically connected to both sides of the steel column, and each steel bracket is connected to a synchronous lifting component that can be raised and lowered. The steel column is lifted off the ground by supporting the steel brackets through the synchronous lifting component.

[0011] Preferably, each of the synchronous lifting components includes a load-bearing steel plate for fixing to the mounting surface, a jack is connected to the load-bearing steel plate, the top of the jack telescopic rod is provided with a ball head, a ball joint support is installed on the lower end face of the steel bracket, and the ball head of the jack telescopic rod is installed in the ball joint support to realize the connection between the jack and the steel bracket.

[0012] Preferably, the steel bracket is connected to the steel column by anchor plates and bolts; the steel column has stiffening plates connected in the groove to increase shear resistance.

[0013] Preferably, a steel plate ring is fitted onto the steel column located above the steel corbel, and at least four steel supports are connected around the outer circumference of the thick steel plate ring. The bottom of the steel supports is fixed to the mounting surface to prevent the steel column from moving horizontally.

[0014] Preferably, the steel plate ring is welded to the steel column, and a gap is left between the steel plate ring and the steel column, with a buffer pad provided in the gap.

[0015] Preferably, the outer end face of the steel plate ring is connected with a plurality of mechanical anchors, which are capable of holding the outer end face of the steel column in place.

[0016] Preferably, it also includes multiple embedded steel plates pre-embedded in the mounting surface, and the bottom of the steel support is respectively fixed to one of the embedded steel plates.

[0017] Preferably, the thick steel plate ring and the steel support are connected by a channel steel plate.

[0018] Preferably, the upper and lower sections formed by cutting the structural column can be welded together.

[0019] Beneficial effects:

[0020] Significantly improved structural stability: Through the combination of symmetrical steel bracket components and stiffening plates, the steel column is subjected to uniform stress, and the maximum bearing capacity can reach 200T, meeting the requirements of forced settlement of large steel columns; effectively avoiding local deformation or damage caused by uneven stress during forced settlement.

[0021] Precise horizontal positioning: The combination of channel steel and steel plate ring structure with rubber buffer pads and mechanical anchors controls the horizontal displacement within 5mm, avoiding lateral displacement of the steel column and significantly improving construction accuracy and structural safety.

[0022] Good jacking synchronization: The double jacks are symmetrically arranged and adaptively adjusted with the ball joint support. The difference in jacking height on both sides does not exceed 1mm, which greatly improves the synchronicity and overall accuracy of the forced settlement construction.

[0023] High safety and reliability: All welding joints undergo non-destructive testing to ensure construction safety; the device has a stable structure and strong load-bearing capacity, effectively meeting the settlement requirements of steel columns of different sizes; the installation process reduces on-site welding operations, resulting in a short construction cycle and high efficiency. Attached Figure Description

[0024] Figure 1 This is a top view of the overall structure of this utility model.

[0025] Figure 2 This is a schematic diagram of the synchronous lifting component structure of this utility model.

[0026] Figure 3 This is a partial structural schematic diagram of this utility model.

[0027] Figure 4 This is a side view of the overall structure of this utility model. Detailed Implementation

[0028] The following will refer to the appendix in the embodiments of this utility model. Figure 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] In the description of the utility model, it should be noted that the terms "upper", "lower", "both sides", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Technical solution / principle:

[0032] The combined steel column forced settlement construction limiting support device provided by this utility model includes the following key components:

[0033] Two steel brackets 11 are symmetrically arranged on both sides of the steel column 1 and rigidly connected to the steel column 1 by anchor plates 12 and M24 bolts 13. HW400×400×13×21 steel brackets 11 are preferred to provide sufficient bearing area; combined with 12mm thick stiffening plates (14) to enhance shear resistance, a triangular stable structure is formed to ensure uniform stress on the steel column 1.

[0034] The horizontal limiting mechanism preferably uses a 20mm thick steel plate ring 22. The steel plate ring 22 is sleeved on the outside of the steel column 1 and welded. The steel column 1 is further tightened by mechanical anchor bolts 23. A 5-10mm gap is reserved between the steel plate ring 22 and the steel column 1. The gap is filled with rubber buffer pads 24 to effectively limit horizontal displacement. The mechanical anchor bolts 23 can hold the outer end face of the steel column 1 to further enhance the horizontal limiting accuracy.

[0035] The synchronous lifting assembly includes two 100T screw jacks 31, symmetrically placed below the steel brackets 11. Each jack 31 has a load-bearing steel plate 32 at its bottom and a ball joint support 33 at its top. The ball head of the jack 31's telescopic rod engages with the ball joint support 33, allowing for minute angle adjustments to ensure uniform force distribution and achieve high-precision synchronous lifting on both sides (lifting height difference not exceeding 1mm).

[0036] The load-bearing anchoring structure includes a pre-embedded steel plate 41 embedded in the foundation, and the bottom of the steel support 42 is welded and fixed to the pre-embedded steel plate 41 to effectively transfer the load and avoid excessive local stress. The steel plate ring 22 is connected to the steel support 42 by a channel steel plate 21 to further enhance the structural stability.

[0037] Main procedures for implementing the plan:

[0038] Construction preparation and layout: Determine the construction scope, prepare for site clearing and equipment and material delivery, and lay out and position according to design requirements.

[0039] Temporary channel steel for construction on the side of structural columns: Temporary channel steel is installed on the side of structural columns to initially restrict the horizontal displacement of the structural columns and provide a basic guarantee for subsequent construction.

[0040] Steel bracket construction: HW400×400×13×21 type steel bracket 11 is symmetrically connected to both sides of steel column 1 through anchor plate 12 and M24 bolt 13, and 12mm thick stiffening plate 14 is installed; a comprehensive inspection of the superstructure is carried out, the pile top elevation is re-measured, and the forced settlement amount and the control value of forced settlement each time can be calculated.

[0041] Install supporting steel columns, jacks, and other forced-sinking structures: Install load-bearing steel plate 32, 100T spiral jack 31, and ball joint support 33 to ensure reliable connection between jack 31 and steel bracket 11; preload jack 31 to test the stress stability of the device.

[0042] Structural column cutting construction: Cut the structural column according to the design requirements to divide it into two separate sections, the upper section being the steel column 1 to be adjusted.

[0043] Forced settlement construction: The height of the steel column 1 is adjusted by synchronously lifting the symmetrically arranged double jacks 31 to eliminate the differential settlement; during the construction process, the horizontal displacement of the steel column 1 is controlled within 5mm, and the ball joint support 33 ensures the synchronicity of the jacks 31, with the difference in lifting height not exceeding 1mm.

[0044] Restoring the severed structural column: After the height of steel column 1 is adjusted to the correct position, the severed steel column 1 can be restored to ensure reliable structural connection. This involves welding the upper and lower sections together.

[0045] Jack staged unloading: Gradually unload the load of the jacks 31 to gradually transition the stress on the structure to a normal state and complete the forced settlement construction.

[0046] Example 1:

[0047] Due to uneven settlement of the soft soil foundation, the settlement difference between adjacent steel piles in a warehouse reached 150mm.

[0048] Repair was carried out using the combined steel column forced settlement construction limiting support device of this utility model:

[0049] First, install the steel bracket assembly (including steel bracket 11, anchor plate 12, bolt 13, stiffening plate 14), horizontal limiting mechanism (steel plate ring 22, mechanical anchor bolt 23, buffer pad 24, steel support 42), and synchronous jacking assembly (including jack 31, load-bearing steel plate 32, ball joint support 33) to cut off the structural column with uneven settlement; adjust the height of steel column 1 by synchronously jacking with double 100T spiral jacks 31, controlling the horizontal displacement within 5mm during the process, and the height difference between the two sides does not exceed 1mm; after the adjustment is completed, restore the cut steel column 1, that is, weld it back to the original structural column, and unload the jacks 31 in stages.

[0050] After repair, the differential settlement of the warehouse steel column 1 was completely eliminated, and the structural stability was well restored, verifying the practicality and effectiveness of this utility model.

[0051] Finally, it should be noted that this utility model is not limited to the above embodiments, and many variations are possible. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of this utility model should be considered within the protection scope of this utility model.

Claims

1. A combined steel column forced settlement construction limiting support device, comprising a structural column for supporting the building roof, characterized in that: The structural column is cut into two sections, upper and lower, with the upper section connected to the building roof to form a steel column (1). The steel column (1) is symmetrically connected to two steel brackets (11) on both sides. Each steel bracket (11) is connected to a synchronous lifting assembly that can be raised and lowered. The steel column (1) is supported by the synchronous lifting assembly to achieve the setting off above the ground.

2. The combined steel column forced settlement construction limiting support device according to claim 1, characterized in that: Each of the synchronous lifting components includes a load-bearing steel plate (32) for fixing to the mounting surface, a jack (31) is connected to the load-bearing steel plate (32), the top of the telescopic rod of the jack (31) is provided with a ball head, a ball joint support (33) is installed on the lower end face of the steel bracket (11), and the ball head of the telescopic rod of the jack (31) is installed in the ball joint support (33) to realize the connection between the jack (31) and the steel bracket (11).

3. A combined steel column forced settlement construction limiting support device according to claim 1 or 2, characterized in that: The steel bracket (11) is connected to the steel column (1) by anchor plate (12) and bolt (13); the steel column (1) is connected to a stiffening plate (14) in the groove to increase shear resistance.

4. The combined steel column forced settlement construction limiting support device according to claim 3, characterized in that: A steel plate ring (22) is fitted on the steel column (1) located above the steel bracket (11). At least four steel supports (42) are connected around the outer circumference of the thick steel plate ring (22). The bottom of the steel supports (42) is fixed on the mounting surface to prevent the steel column (1) from moving horizontally.

5. The combined steel column forced settlement construction limiting support device according to claim 4, characterized in that: The steel plate ring (22) is welded to the steel column (1), and there is a gap between the steel plate ring (22) and the steel column (1), and a buffer pad (24) is provided in the gap.

6. A combined steel column forced settlement construction limiting support device according to claim 4 or 5, characterized in that: The outer end face of the steel plate ring (22) is connected to a plurality of mechanical anchors (23), which can hold the outer end face of the steel column (1).

7. The combined steel column forced settlement construction limiting support device according to claim 4, characterized in that: It also includes multiple embedded steel plates (41) embedded in the installation surface, and the bottom of the steel support (42) is fixed on a pre-embedded steel plate (41).

8. A combined steel column forced settlement construction limiting support device according to claim 4, characterized in that: The thick steel plate ring (22) and the steel support (42) are connected by a channel steel plate (21).

9. A combined steel column forced settlement construction limiting support device according to claim 1, characterized in that: The upper and lower sections formed by cutting the structural column can be welded together.

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