Limited space structure reinforcing mechanism and construction method thereof

Abstract

The invention relates to the technical field of limited space structure reinforcing, in particular to a limited space structure reinforcing mechanism and a construction method thereof.The limited space structure reinforcing mechanism comprises a plurality of brick columns, prefabricated concrete plates are arranged on the upper surfaces of the brick columns, structural plates are arranged on the upper surfaces of the prefabricated concrete plates, the limited space structure reinforcing mechanism further comprises a mounting cylinder, and a rotating groove and a limiting groove are formed in the inner wall of the mounting cylinder; the inner wall of the rotating groove is rotatably connected with a rotating cylinder, the inner wall of the rotating cylinder is provided with an arc-shaped guide groove, and the inner wall of the mounting cylinder is fixedly connected with two arc-shaped limiting blocks; a pressing rod is slidably connected to the inner wall of the cylinder, two limiting rods are fixedly connected to the surface of the pressing rod, the ends, away from the pressing rod, of the two limiting rods are slidably connected with the inner wall of the arc-shaped guide groove in a matched mode, and a rotating limiting block is fixedly connected to the lower surface of the cylinder; the brick columns and the prefabricated concrete plates serve as permanent supporting structures, traditional steel pipe scaffolds, square timber and formwork systems are replaced, and the waste problem caused by the fact that a large number of turnover materials cannot be dismantled is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of reinforcing structure in restricted space, in particular to a reinforcing mechanism for structure in restricted space and a construction method thereof. BACKGROUND

[0002] In order to meet the demand, projects with multiple functions such as bonded warehouse, bonded logistics, international logistics transfer and distribution, simple processing and value-added services, import and export trade, re-export trade, commodity display and logistics information processing are rising in various places. The cold chain warehouse of the project is an important part of the construction.

[0003] At present, the traditional "steel pipe scaffold + square wood + formwork" support system is generally used in the industry for the construction of such overhead structures. However, when facing extremely limited space with extremely low headroom, this traditional method exposes many shortcomings:

[0004] 1. The supporting rod is difficult to erect, and the operation space is insufficient, resulting in extremely low construction efficiency;

[0005] 2. After the structure is formed, the formwork and support system cannot be normally removed, and a large amount of steel pipe, square wood and formwork is permanently buried underground, causing serious material waste and economic loss;

[0006] 3. The remaining wooden materials are extremely prone to termite breeding and decay in a humid and closed environment, not only polluting the environment, but also eroding the concrete structure for a long time, affecting its durability and safety, and leaving serious quality hidden dangers.

[0007] Based on this, a reinforcing mechanism for structure in restricted space and a construction method thereof are proposed. SUMMARY

[0008] In order to solve the above technical problems, the present application proposes a reinforcing mechanism for structure in restricted space and a construction method thereof.

[0009] The technical solution for achieving the purpose of the present application is as follows: a reinforcing mechanism for structure in restricted space, comprising a plurality of brick columns, the upper surfaces of the plurality of brick columns are provided with prefabricated concrete slabs, the upper surfaces of the prefabricated concrete slabs are provided with structure plates, characterized in that it further comprises:

[0010] A mounting cylinder is provided, rotation grooves and limiting grooves are formed in the inner walls of the mounting cylinder, a rotating cylinder is rotatably connected to the inner wall of the rotation groove, an arc-shaped guide groove is formed in the inner wall of the rotating cylinder, and two arc-shaped limiting blocks are fixedly connected to the inner wall of the mounting cylinder;

[0011] A cylinder is provided, a pressing rod is slidably connected to the inner wall of the cylinder, two limiting rods are fixedly connected to the surface of the pressing rod, the distal ends of the two limiting rods are slidably connected to the inner wall of the arc-shaped guide groove, and a rotating limiting block is fixedly connected to the lower surface of the cylinder.

[0012] Preferably, a connecting plate is fixedly connected to the lower surface of the precast concrete slab, the lower surface of the connecting plate is fixedly connected to the top end of the pressure rod, a compression spring is fixedly connected to the lower surface of the pressure rod, and the bottom end of the compression spring is rotatably connected to the inner bottom wall of the cylinder.

[0013] Preferably, a rotating block is rotatably connected to the inner bottom wall of the cylinder, the upper surface of the rotating block is fixedly connected to the bottom end of the compression spring, and two rectangular blocks are fixedly connected to the surface of the cylinder.

[0014] Preferably, the lower surface of the rotating drum has two drive grooves, and the inner walls of the two drive grooves are respectively adapted to slide and connect with the surfaces of the corresponding two rectangular blocks.

[0015] Preferably, the surfaces of both limiting rods are fixedly connected to limiting pins, and the opposite sides of the two limiting pins are respectively attached to the inner wall of the rotating drum.

[0016] Preferably, a fixing hole is provided on the upper surface of the brick column, and the inner wall of the fixing hole is fixedly connected to the surface of the mounting cylinder.

[0017] Preferably, the upper surface of the brick column is provided with multiple positioning holes, and the inner walls of the multiple positioning holes are adapted to be slidably connected with positioning rods, and the top ends of the multiple positioning rods are respectively fixedly connected to the lower surface of the precast concrete slab.

[0018] A method for reinforcing confined space structures, comprising the following steps:

[0019] S1: After the foundation cap construction is completed, backfill and compact the soil to ensure the stability of the foundation. Construct short columns and ground beams below the first floor slab. The top elevation of the ground beams should be consistent with the bottom elevation of the structural slab. At the same time, fabricate precast concrete slabs as the supporting foundation for the structural slab. Construct brick columns on the backfill soil according to the design positions. Reserve fixing holes and multiple positioning holes at the top of the brick columns.

[0020] S2: Hoist the precast concrete slab above the brick column and use the positioning rod and positioning hole to achieve initial positioning, ensuring that the precast concrete slab is placed stably and avoiding tilting or displacement;

[0021] S3: After the precast concrete slab is placed in place, its weight is transferred to the pressure rod through the connecting plate. The pressure rod moves downward, compressing the compression spring. The limiting rod on the pressure rod slides along the arc-shaped guide groove inside the rotating cylinder, driving the rotating cylinder to rotate 180 degrees. The rotation of the rotating cylinder, through the cooperation of the rectangular block and the drive groove, drives the rotating limiting block to rotate synchronously 180 degrees. When the rotating limiting block rotates to the position corresponding to the arc-shaped limiting block inside the installation cylinder, mechanical locking is achieved.

[0022] S4: After a firm connection is formed between the precast concrete slab and the brick column, the structural slab reinforcement is tied and the concrete is poured. After the concrete curing is completed, the construction of the first-floor overhead structure beams and slabs is finished.

[0023] The significant advantages of this invention compared to existing technologies are:

[0024] Firstly, this invention uses brick columns and precast concrete slabs as permanent support structures, replacing traditional steel pipe scaffolding, timber, and formwork systems. This avoids the waste caused by the inability to dismantle large amounts of reusable materials. The self-weight of the precast concrete slab is transferred to the pressure bar through the connecting plate. The pressure bar moves downward, causing the limiting rod to slide along the arc-shaped guide groove inside the rotating cylinder. This series of actions converts the vertically downward gravity into a horizontal rotational torque of the rotating cylinder, ultimately driving the rotating limiting block to rotate, accurately aligning it with and locking it with the arc-shaped limiting block fixed inside the installation cylinder. The entire process requires no external power or complex operation, achieving rapid and automatic locking of the support system, greatly improving construction efficiency and reliability in extremely confined spaces.

[0025] Secondly, the sliding fit between the limiting rod and the arc-shaped guide groove in this invention ensures the accuracy of power transmission; the meshing fit between the rotating limiting block and the arc-shaped limiting block forms a rigid interlock, effectively preventing horizontal displacement and torsion; at the same time, the sliding fit between the positioning rod and the positioning hole provides accurate vertical positioning in the early stage of installation, and can reliably bear the load transmitted by the structural plate.

[0026] Thirdly, this invention, through the setting of compression spring and rotating block, ensures that the compression spring stores energy under pressure, and that the pressure rod has sufficient stroke to drive the rotating cylinder to complete the entire rotation and locking process. When the precast slab is in place, the entire mechanism completes the locking at once under the action of gravity. After locking, the system becomes part of the permanent foundation and can be removed without needing to be removed. This solves the problem that traditional formwork support systems cannot be removed in ultra-low headroom environments, while also eliminating material waste and subsequent hidden dangers. Attached Figure Description

[0027] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0028] Figure 1 This is a three-dimensional structural schematic diagram provided by the present invention;

[0029] Figure 2 This is a schematic diagram of the structural plate installation structure provided by the present invention;

[0030] Figure 3 This is a schematic diagram of the brick column installation structure provided by the present invention;

[0031] Figure 4 This is an exploded structural diagram of the installation mechanism provided by the present invention;

[0032] Figure 5This is a schematic diagram of the cross-sectional structure of the mounting cylinder provided by the present invention;

[0033] Figure 6 This is a schematic diagram of the internal structure of the mounting cylinder provided by the present invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Brick column; 2. Precast concrete slab; 3. Structural slab; 4. Positioning rod; 5. Positioning hole; 6. Fixing hole; 7. Mounting cylinder; 8. Rotating groove; 9. Limiting groove; 10. Rotating cylinder; 11. Arc-shaped limiting block; 12. Arc-shaped guide groove; 13. Pressure rod; 14. Connecting plate; 15. Rotating limiting block; 16. Cylinder; 17. Rotating block; 18. Compression spring; 19. Rectangular block; 20. Limiting rod; 21. Limiting pin; 22. Drive groove. Detailed Implementation

[0036] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] This invention provides an improved confined space structure reinforcement mechanism and its construction method. The technical solution of this invention is as follows:

[0038] like Figures 1-6 As shown, a confined space structure reinforcement mechanism includes multiple brick columns 1, which are constructed using sintered common bricks or solid concrete bricks to ensure sufficient compressive strength and durability, enabling them to bear the loads transferred from the superstructure for extended periods. A precast concrete slab 2 is provided on the upper surface of the multiple brick columns 1. The precast concrete slab 2 is made of precast concrete and reinforced with steel bars, exhibiting good bending and shear resistance, high surface flatness, and facilitating the construction of the structural slab 3. The structural slab 3 is provided on the upper surface of the precast concrete slab 2. The mechanism also includes:

[0039] Mounting cylinder 7 serves as the fixed base for the entire locking mechanism. Its internal rotating groove 8 and limiting groove 9 are used to accommodate rotating cylinder 10 and arc-shaped limiting block 11, respectively, serving as a guide and limiting function. The inner wall of mounting cylinder 7 is provided with rotating groove 8 and limiting groove 9. Rotating cylinder 10 is rotatably connected to the inner wall of rotating groove 8. Rotating cylinder 10 cooperates with limiting rod 20 through arc-shaped guide groove 12 on its inner wall, converting the linear motion of pressure rod 13 into rotational motion. It is the core transmission component for realizing automatic locking. The inner wall of rotating cylinder 10 is provided with arc-shaped guide groove 12. Two arc-shaped limiting blocks 11 are fixedly connected to the inner wall of mounting cylinder 7.

[0040] The cylinder 16 serves as a guide sleeve for the pressure rod 13, ensuring its vertical movement. The rotation limit block 15 eventually engages with the arc-shaped limit block 11 inside the mounting cylinder 7, forming a mechanical interlock to prevent horizontal displacement and torsion. The mounting cylinder 7 and the cylinder 16 are machined from steel with smooth inner walls to ensure smooth movement of the rotating cylinder 10 and the pressure rod 13. The surface can be galvanized or epoxy coated to improve corrosion resistance. The pressure rod 13 is slidably connected to the inner wall of the cylinder 16. The pressure rod 13 moves downward under the weight of the precast concrete slab 2 and pushes the rotating cylinder 10 to rotate through the sliding of the limit rod 20 in the arc-shaped guide groove 12, realizing power transmission and motion conversion. Two limit rods 20 are fixedly connected to the surface of the pressure rod 13. The ends of the two limit rods 20 away from the pressure rod 13 are respectively adapted to slide and connected to the inner wall of the arc-shaped guide groove 12. The rotation limit block 15 is fixedly connected to the lower surface of the cylinder 16.

[0041] like Figure 5 and Figure 6 As shown, a connecting plate 14 is fixedly connected to the lower surface of the precast concrete slab 2. The lower surface of the connecting plate 14 is fixedly connected to the top end of the pressure rod 13. A compression spring 18 is fixedly connected to the lower surface of the pressure rod 13. The compression spring 18 provides the necessary rebound force and stroke guarantee to ensure that the pressure rod 13 can complete the entire driving process. The rotating block 17 allows the bottom end of the compression spring 18 to rotate, avoiding the spring from being twisted and damaged. The bottom end of the compression spring 18 is rotatably connected to the inner bottom wall of the cylinder 16.

[0042] A rotating block 17 is rotatably connected to the inner bottom wall of the cylinder 16. The upper surface of the rotating block 17 is fixedly connected to the bottom end of the compression spring 18. Two rectangular blocks 19 are fixedly connected to the surface of the cylinder 16.

[0043] Two drive grooves 22 are formed on the lower surface of the rotating cylinder 10, and the inner walls of the two drive grooves 22 are respectively adapted to slide and connect with the surfaces of the corresponding two rectangular blocks 19.

[0044] Both limit rods 20 are fixedly connected to limit pins 21, and the opposite sides of the two limit pins 21 are respectively attached to the inner wall of the rotating drum 10.

[0045] like Figure 3 and Figure 4 As shown, a fixing hole 6 is provided on the upper surface of the brick column 1, and the inner wall of the fixing hole 6 is fixedly connected to the surface of the mounting cylinder 7.

[0046] Multiple positioning holes 5 are provided on the upper surface of the brick column 1. Positioning rods 4 are slidably connected to the inner walls of the multiple positioning holes 5. The tops of the multiple positioning rods 4 are fixedly connected to the lower surface of the precast concrete slab 2. The positioning rods 4 are made of stainless steel or galvanized round steel. The positioning holes 5 are reserved with high precision to ensure accurate installation and avoid misalignment.

[0047] A method for reinforcing confined space structures, comprising the following steps:

[0048] S1: After the foundation cap construction is completed, backfill and compact the soil to ensure the stability of the foundation. Construct short columns and ground beams below the first floor slab. The top elevation of the ground beams is consistent with the bottom elevation of structural slab 3. At the same time, fabricate precast concrete slab 2 as the supporting foundation for structural slab 3. Construct brick columns 1 on the backfill soil according to the design position. The top of the brick columns 1 is reserved with fixing holes 6 and multiple positioning holes 5.

[0049] S2: Hoist the precast concrete slab 2 above the brick column 1, and achieve initial positioning by cooperating with the positioning rod 4 and the positioning hole 5 to ensure that the precast concrete slab 2 is placed stably and avoids tilting or displacement;

[0050] S3: After the precast concrete slab 2 is placed in place, its own weight is transmitted to the pressure rod 13 through the connecting plate 14. The pressure rod 13 moves downward, compressing the compression spring 18. The limiting rod 20 on the pressure rod 13 slides along the arc-shaped guide groove 12 inside the rotating cylinder 10, driving the rotating cylinder 10 to rotate 180 degrees. The rotation of the rotating cylinder 10, through the cooperation of the rectangular block 19 and the drive groove 22, drives the rotation limiting block 15 to rotate synchronously 180 degrees. When the rotation limiting block 15 rotates to the position corresponding to the arc-shaped limiting block 11 inside the mounting cylinder 7, mechanical locking is achieved.

[0051] S4: After a firm connection is formed between the precast concrete slab 2 and the brick column 1, the reinforcement of the structural slab 3 is tied and the concrete is poured. After the concrete curing is completed, the construction of the first-floor overhead structure beams and slabs is finished.

[0052] The specific working method is as follows: After the foundation cap construction is completed, backfill and compact the earthwork or harden the ground to ensure the foundation is stable. Construct short columns and ground beams below the first floor slab, with the top surface elevation of the ground beams consistent with the bottom elevation of structural slab 3. At the same time, fabricate precast concrete slab 2 as the supporting foundation for structural slab 3. Construct brick columns 1 on the backfill soil according to the design position, with fixing holes 6 and multiple positioning holes 5 reserved at the top of the brick columns 1.

[0053] The precast concrete slab 2 is hoisted above the brick column 1 and initially positioned using the positioning rod 4 and positioning hole 5 to ensure stable placement. An installation cylinder 7 is installed in the fixing hole 6 at the top of the brick column 1. The installation cylinder 7 contains a rotating cylinder 10, an arc-shaped guide groove 12, and an arc-shaped limiting block 11. The precast concrete slab 2 is connected to the pressure rod 13 via a connecting plate 14. The lower end of the pressure rod 13 is equipped with a compression spring 18 and a rotating block 17. The cylinder 16 engages with the installation cylinder 7 via a rotating limiting block 15. Once the precast concrete slab 2 is in place, its weight is transferred to the pressure rod 13 via the connecting plate 14, causing the pressure rod 13 to move downwards and compress the compression spring 18. The limiting rod 20 on the pressure rod 13 slides along the arc-shaped guide groove 12 inside the rotating cylinder 10, driving the rotating cylinder 10 to rotate 180 degrees. The rotation of the rotating cylinder 10, through the cooperation of the rectangular block 19 and the drive groove 22, can drive the rotating limiting block 15 to rotate 180 degrees synchronously. When the rotating limiting block 15 rotates 180 degrees, it can be mechanically locked when it is in the same position as the arc-shaped limiting block 11 inside the installation cylinder 7. A firm connection is formed between the precast concrete slab 2 and the brick column 1. Then the reinforcement of the structural slab 3 is tied and the concrete is poured.

[0054] After the concrete curing is completed, the construction of the first-floor elevated structure beams and slabs is finished. Brick column 1 and precast concrete slab 2 are retained as permanent support systems and do not need to be removed, thus avoiding material waste and subsequent corrosion problems.

[0055] The technical means disclosed in this invention are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this invention are common knowledge to those skilled in the art.

Claims

1. A confined space structure reinforcement mechanism, comprising a plurality of brick columns (1), wherein a precast concrete slab (2) is disposed on the upper surface of the plurality of brick columns (1), and a structural slab (3) is disposed on the upper surface of the precast concrete slab (2), characterized in that, Also includes: The mounting cylinder (7) has a rotating groove (8) and a limiting groove (9) respectively on its inner wall. The rotating groove (8) is rotatably connected to a rotating cylinder (10). The rotating cylinder (10) has an arc-shaped guide groove (12) on its inner wall. The mounting cylinder (7) has two arc-shaped limiting blocks (11) fixedly connected to its inner wall. A cylinder (16) has a pressure rod (13) slidably connected to its inner wall. Two limiting rods (20) are fixedly connected to the surface of the pressure rod (13). The ends of the two limiting rods (20) away from the pressure rod (13) are respectively adapted to slide and connected to the inner wall of the arc-shaped guide groove (12). A rotating limiting block (15) is fixedly connected to the lower surface of the cylinder (16).

2. The confined space structure reinforcement mechanism according to claim 1, characterized in that: A connecting plate (14) is fixedly connected to the lower surface of the precast concrete slab (2). The lower surface of the connecting plate (14) is fixedly connected to the top end of the pressure rod (13). A compression spring (18) is fixedly connected to the lower surface of the pressure rod (13). The bottom end of the compression spring (18) is rotatably connected to the inner bottom wall of the cylinder (16).

3. The confined space structure reinforcement mechanism according to claim 2, characterized in that: The inner bottom wall of the cylinder (16) is rotatably connected to a rotating block (17), the upper surface of the rotating block (17) is fixedly connected to the bottom end of the compression spring (18), and two rectangular blocks (19) are fixedly connected to the surface of the cylinder (16).

4. The confined space structure reinforcement mechanism according to claim 3, characterized in that: The lower surface of the rotating drum (10) has two drive grooves (22), and the inner walls of the two drive grooves (22) are respectively adapted to slide and connect with the surfaces of the two corresponding rectangular blocks (19).

5. The confined space structure reinforcement mechanism according to claim 4, characterized in that: Both of the limiting rods (20) are fixedly connected to limiting pins (21), and the opposite sides of the two limiting pins (21) are respectively attached to the inner wall of the rotating cylinder (10).

6. The confined space structure reinforcement mechanism according to claim 1, characterized in that: The upper surface of the brick column (1) is provided with a fixing hole (6), and the inner wall of the fixing hole (6) is fixedly connected to the surface of the mounting cylinder (7).

7. The confined space structure reinforcement mechanism according to claim 6, characterized in that: The upper surface of the brick column (1) is provided with multiple positioning holes (5), and the inner walls of the multiple positioning holes (5) are adapted to be slidably connected with positioning rods (4). The top ends of the multiple positioning rods (4) are respectively fixedly connected to the lower surface of the precast concrete slab (2).

8. A method for reinforcing confined space structures, wherein the method is applied to the confined space structure reinforcement mechanism as described in any one of claims 1-7, characterized in that: The method includes the following steps: S1: After the foundation cap construction is completed, backfill and compact the soil to ensure the foundation is stable. Construct short columns and ground beams below the first floor slab. The top surface elevation of the ground beam is consistent with the bottom elevation of the structural slab (3). At the same time, fabricate precast concrete slabs (2) as the supporting foundation of the structural slab (3). Construct brick columns (1) on the backfill soil according to the design position. The top of the brick columns (1) is reserved with fixing holes (6) and multiple positioning holes (5). S2: Hoist the precast concrete slab (2) above the brick column (1) and achieve initial positioning by cooperating with the positioning rod (4) and the positioning hole (5) to ensure that the precast concrete slab (2) is placed stably and avoids tilting or shifting. S3: When the precast concrete slab (2) is placed in place, its own weight is transmitted to the pressure rod (13) through the connecting plate (14). The pressure rod (13) moves downward, compressing the compression spring (18). The limiting rod (20) on the pressure rod (13) slides along the arc-shaped guide groove (12) inside the rotating cylinder (10), driving the rotating cylinder (10) to rotate 180 degrees. The rotation of the rotating cylinder (10) is driven by the cooperation of the rectangular block (19) and the drive groove (22), which drives the rotating limiting block (15) to rotate 180 degrees synchronously. When the rotating limiting block (15) rotates to the position corresponding to the arc-shaped limiting block (11) inside the mounting cylinder (7), mechanical locking is achieved. S4: After a firm connection is formed between the precast concrete slab (2) and the brick column (1), the reinforcement of the structural slab (3) is tied and the concrete is poured. After the concrete curing is completed, the construction of the first-floor overhead structure beam and slab is finished.

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