System and method for pre-embedding and reinforcing large-diameter pipeline in concrete structure

Abstract

The invention discloses a system and a method for pre-embedding and reinforcing a large-diameter pipeline in a concrete structure. The system comprises a clamping and fixing frame, a pull rod reinforcing steel bar, a pulley traction mechanism and a connecting and positioning assembly. The multiple sets of clamping frames are arranged, the adjacent clamping frames are spaced by the corresponding distance and arranged on the pipeline in a sleeving mode, each clamping frame comprises multiple sections of angle steel, the lap joint length of the adjacent angle steel is finely adjusted, the adjacent angle steel is locked so that the clamping frames can clamp the outer wall of the pipeline, and circumferential reinforcement is completed. A plurality of groups of pull rod reinforcing steel bars are arranged in parallel in the axial direction of the pipeline to connect and fix the plurality of groups of clamping and fixing frames into a whole to finish axial reinforcement; the pulley traction mechanism comprises a first pulley assembly, a second pulley assembly and a traction rope which are matched with the clamping frame to be pulled to a design position; the connecting and positioning assembly comprises connecting pieces and positioning split heads, the positioning split heads are used for supporting and positioning the pipeline, and the clamping and fixing frames, the pull rod steel bars and the peripheral steel bar framework are bound, connected and fixed through the connecting pieces. According to the reinforcement system, scattered reinforcement operation is converted into modular assembly, and in-line complex reinforcement operation is reduced.

Description

Technical Field

[0001] This invention belongs to the field of pipeline pre-embedded reinforcement technology, and more specifically, relates to a system and method for pre-embedded reinforcement of large-diameter pipelines in concrete structures. Background Technology

[0002] Large-diameter pipes within concrete structures typically require reinforcement with steel bars. These reinforcement bars are numerous, including circumferential bars, stirrups, and longitudinal bars. Furthermore, the pipes must be positioned and adjusted within the steel reinforcement cage of the concrete structure before subsequent binding and reinforcement can proceed. Construction workers must reinforce the installed large-diameter pipes circumferentially and axially within the concrete structure using steel bars, which is time-consuming, material-intensive, and increases the labor intensity of the workers.

[0003] Chinese patent CN214008323U discloses a pre-embedded pipe fixing structure, which uses U-shaped blocks of various specifications to clamp the pipes, but it can only reinforce pipes of fixed specifications, which is very limited. Chinese patent CN118128991A discloses a civil defense pre-embedded pipe and method, which uses clamps and connecting rings to fix the pipes in the structure. Construction workers need to work in the foundation structure for a long time, which is both unsafe and affects the progress. Chinese patent CN209556364U discloses a wall-mounted structure for subsequent welding of pre-embedded pipes, which uses a method of leaving holes in the concrete structure and then installing the pipes after the concrete is poured. However, this method will result in large-diameter pipes not being tightly connected to the concrete structure, causing structural strength risks.

[0004] The aforementioned patents all suffer from problems such as slow construction progress and low work efficiency. Therefore, there is an urgent need for a more economical, efficient, and flexible method for pre-embedding, reinforcing, and fixing large-diameter pipes to solve these problems. Summary of the Invention

[0005] To address the problems of slow construction progress and low work efficiency in existing large-diameter pipe reinforcement technologies, this invention provides a system and method for pre-embedding and reinforcing large-diameter pipes within concrete structures.

[0006] To achieve the above objectives, the present invention provides a pre-embedded reinforcement system for large-diameter pipes within a concrete structure, comprising a pipe on which segmental assembly and welding are performed on wooden supports placed outside the pipe; multiple sets of clamping brackets, each consisting of multiple sections of angle steel, are spaced at appropriate intervals and fitted onto the pipe, with adjacent angle steel sections having slightly adjusted overlap lengths and locked together to clamp the clamping brackets against the outer wall of the pipe, completing the circumferential reinforcement; multiple sets of tie rods are arranged parallel to the pipe's axial direction, connecting the clamping brackets into a single unit to complete the axial reinforcement of the pipe; and a system fixed to the pipe... The pulley traction mechanism includes a first pulley assembly, a second pulley assembly, and a traction rope. The three work together to pull the loosened clamping frame to the designed position, ensuring the planar consistency of multiple clamping frames for the next clamping operation. After the traction operation is completed, the pulley traction mechanism is removed. The mechanism also includes a connecting and positioning component, which includes a connector and a positioning trestle. The positioning trestle supports and positions the reinforced pipe within the reinforced concrete structure. The connector binds and secures the clamping frame, tie rod reinforcement, and surrounding reinforced concrete structure.

[0007] Furthermore, the angle steel is provided with adjustment elongated holes at both ends, and the locking bolts are connected to the nuts through the adjustment elongated holes to realize the connection of adjacent angle steels.

[0008] Furthermore, the angle steel has connecting holes, and multiple tie rods are inserted into the corresponding connecting holes, which, together with the pulley traction mechanism, ensure the planar consistency of the multiple clamping frames.

[0009] Furthermore, the first pulley assembly and the second pulley assembly are respectively disposed at both ends of the top of the horizontal section of the pipe; wherein the first pulley assembly includes a first pulley bracket, a first handle and a first pulley; the second pulley assembly has the same structure as the first pulley assembly, and is fixedly disposed at the other end of the top of the horizontal section of the pipe, including a second pulley bracket, a second handle and a second pulley.

[0010] Furthermore, one end of the traction rope is wound and connected to the first pulley assembly, and the other end passes through the threading holes provided on multiple sets of clamping frames in sequence, and is then wound and fixed in the groove of the second pulley.

[0011] Furthermore, the traction rope is provided with multiple rope clamp baffles, which are arranged according to the design spacing of the clamping frame; each rope clamp baffle is located between adjacent clamping frames.

[0012] Furthermore, the positioning trestles are fixedly installed inside the reinforced concrete structure to support and position the pipe, ensuring that the pipe is in the designed position within the reinforced concrete structure; the connecting components include binding wires, which bind and secure the clamping frame, tie rod reinforcement, and surrounding reinforced concrete structure.

[0013] According to another aspect of the present invention, a method for pre-embedding and reinforcing large-diameter pipes within a concrete structure is also provided, comprising the following steps:

[0014] S100: The segmented assembly and welding of the pipeline are completed on the wooden blocks placed outside the line;

[0015] S200: Based on BIM technology, lay out the angle steel and confirm its length and quantity;

[0016] S300: Complete the assembly of the clamping bracket and fit it onto the horizontal section of the pipe;

[0017] S400: Install a pulley traction mechanism, and use traction ropes to pass through the wire holes on multiple sets of clamping frames to pull the multiple sets of clamping frames to the design position respectively;

[0018] S500: Pass multiple sets of tie rods through the corresponding angle steel to make the plane of multiple clamping frames consistent;

[0019] S600: Disassemble the pulley traction mechanism, adjust the overlap length between adjacent angle steels and lock them, so that the clamping frame is stuck on the outer wall of the pipe to complete the circumferential reinforcement;

[0020] S700: The junction of the tie rod reinforcement and the angle steel is fully welded and fixed by arc welding, thereby completing the axial reinforcement of the pipeline;

[0021] S800: The reinforced pipe is hoisted into the concrete structure steel reinforcement cage, and the positioning is completed by positioning trestles. The clamping frame, tie rod steel bars and surrounding steel reinforcement cage are tied and fixed by tying wire.

[0022] S900: The concrete structure is poured simultaneously to complete the construction.

[0023] Furthermore, in step S400, the step of pulling the multiple sets of clamping brackets to the designed positions includes the following steps:

[0024] S401: Install the first pulley assembly and the second pulley assembly at both ends of the top of the horizontal section of the pipe;

[0025] S402: Mark the installation positions of the rope clamp baffles on the traction rope according to the interval of the clamping frame;

[0026] S403: One end of the traction rope is wound and connected to the first pulley assembly, and the other end is passed through the threading holes provided on multiple sets of clamping frames in sequence, and then wound and fixed in the groove of the second pulley.

[0027] S404: Install and fix the rope clamp baffles sequentially at the marked positions on the traction rope, so that each rope clamp baffle is located between adjacent clamping frames, forming a sequential arrangement structure of "clamping frame - rope clamp baffle - clamping frame";

[0028] S405: By turning the second handle, the traction rope is tightened, and the corresponding rope clamp baffle pushes the locking frame to the designed position.

[0029] Furthermore, in S600, adjusting the overlap length between adjacent angle steels and locking it includes the following steps:

[0030] S601: For each group of angle steel, check the fit between each angle steel and the outer wall of the pipe, fine-tune the locking bolts along the adjustment hole and tighten them initially to ensure that the inner side of each angle steel fits tightly against the pipe.

[0031] S602: Local gaps exist. By shortening the overlap length of adjacent angle steel, it is ensured that the clamping bracket forms a uniform circumferential clamping force on the pipe.

[0032] S603: After the fit adjustment is completed, tighten all locking bolts thoroughly so that the multi-section angle steel forms a circumferential rigid frame, firmly clamping the outer wall of the pipe.

[0033] In summary, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects:

[0034] 1. The large-diameter pipe pre-embedded reinforcement system of the present invention achieves high efficiency, precision and lightweight reinforcement of large-diameter pipes through modular design, off-line pre-installation and mechanical traction, taking into account construction safety and cost control, and is significantly superior to traditional steel reinforcement methods.

[0035] 2. The large-diameter pipe pre-embedded reinforcement system of the present invention transfers the core processes such as pipe assembly and welding, clamping frame installation, and tie rod reinforcement connection to an open space outside the concrete structure. It can be carried out simultaneously with the concrete structure construction (such as pipe reinforcement being completed simultaneously during the structural reinforcement binding), avoiding the traditional serial construction mode of "structure first, pipe later", greatly reducing the time of cross-operation, and is especially suitable for projects with tight schedules such as large-scale metallurgical construction.

[0036] 3. The large-diameter pipe pre-embedded reinforcement system of the present invention uses prefabricated clamping frames to replace the traditional on-site binding of ring bars and stirrups, and uses tie rod steel bars in series with clamping frames to replace longitudinal reinforcement, transforming the scattered steel reinforcement work into modular assembly and reducing the complex reinforcement operation within the line.

[0037] 4. The large-diameter pipe pre-embedded reinforcement system of the present invention, with the help of the pulley traction mechanism and the rope clamp baffle, realizes the one-time traction and synchronous positioning of multiple sets of clamping frames; there is no need for manual handling and calibration of the clamping frame position one by one, but only by turning the pulley handle can multiple sets of clamping frames be moved along the pipe axis, and the rope clamp baffle can accurately control the spacing, saving the repetitive process of manual measurement and adjustment, and improving the installation efficiency of clamping frames by more than 60%.

[0038] 5. The large-diameter pipe pre-embedded reinforcement system of the present invention consists of a clamping frame composed of multiple sections of angle steel with adjustable elongated holes connected by locking bolts. The inner diameter of the clamping frame can be changed by adjusting the overlap length of the angle steel. There is no need to customize special reinforcement parts for pipes of different diameters, which solves the limitation of the traditional U-shaped block of "one pipe, one specification" and is suitable for large-diameter pipes of various diameters.

[0039] 6. The large-diameter pipe pre-embedded reinforcement system of the present invention is suitable for various complex pipe sections. For different pipe sections such as horizontal sections, vertical sections, and bending sections, only the vertical angle between the plane of the clamping frame and the pipe body needs to be adjusted (for example, the plane of the clamping frame needs to be horizontal in vertical sections) to complete the circumferential reinforcement. The tie rod steel bars can be flexibly arranged according to the pipe direction without changing the core structure, which is suitable for complex scenarios with multiple pipe directions in metallurgical construction.

[0040] 7. The large-diameter pipe pre-embedded reinforcement system of the present invention uses BIM technology to simulate the pipe diameter and stress requirements in advance, and accurately designs the number, length and spacing of angle steel and clamping brackets to ensure the compatibility of the reinforcement system with the pipe and concrete structure, avoid on-site rework and adjustment, and is especially suitable for industrial pipe pre-embedded projects with high precision requirements.

[0041] 8. The large-diameter pipe pre-embedded reinforcement system of the present invention avoids the hidden dangers of on-line operation; in the traditional process, construction personnel need to carry out reinforcement work in the concrete structure (such as the bottom of the foundation, the area with dense reinforcement), which poses the risk of collision and fall due to the narrow space, and welding sparks can easily ignite debris in the structure; the core process of this system is completed in an open field outside the line, with an open working environment and no risk of space restriction.

[0042] 9. The large-diameter pipe pre-embedded reinforcement system of the present invention has a fixing frame that is tightly attached to the outer wall of the pipe by angle steel to form a circumferential rigid frame to resist radial displacement of the pipe; the tie rod steel bars are connected in series with multiple sets of fixing frames and connected to the concrete structure steel bars to form a closed force system of "pipe-fixing frame-tie rod steel bars-concrete structure", which evenly transfers the force of the pipe to the concrete structure and avoids the structural strength risk caused by the disconnection between the pipe and the structure in the traditional pre-reserved hole process. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of a large-diameter pipe pre-embedded reinforcement system in a concrete structure according to an embodiment of the present invention;

[0044] Figure 2 This is a schematic diagram of the clamping frame in an embodiment of the present invention;

[0045] Figure 3 This is a schematic diagram of the operation of the pulley traction mechanism for traction clamping frame in an embodiment of the present invention;

[0046] Figure 4This is a schematic diagram of the operation of the pulley traction mechanism for deploying the locking frame in an embodiment of the present invention;

[0047] Figure 5 This is a cross-sectional schematic diagram of the first pulley assembly in an embodiment of the present invention;

[0048] Figure 6 This is a schematic diagram of the structure of the rope clamp baffle driving the clamping frame to move in an embodiment of the present invention;

[0049] Figure 7 This is a top view of the pipe that has completed the clamping operation in a concrete structure in an embodiment of the present invention;

[0050] Figure 8 This is a front view of the pipe that has completed the clamping operation in a concrete structure in an embodiment of the present invention;

[0051] Figure 9 This is a flowchart illustrating the steps of a method for pre-embedding and reinforcing large-diameter pipes within a concrete structure, as described in an embodiment of the present invention.

[0052] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-clamping frame, 101-angle steel, 102-adjusting elongated hole, 103-locking bolt, 104-threading hole, 2-tie rod reinforcement, 3-pipe, 4-concrete structure, 5-pulley traction mechanism, 51-first pulley assembly, 511-first pulley bracket, 512-first handle, 513-first pulley, 52-second pulley assembly, 53-traction rope, 54-rope clamp baffle, 6-wooden pad. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0054] like Figure 1-8As shown, this invention provides a large-diameter pipe pre-embedded reinforcement system in a concrete structure, including a clamping frame 1, tie rod reinforcement 2, pulley traction mechanism 5, wooden blocks 6, a crane, and connecting and positioning components. Multiple sets of clamping frames 1 are provided, with adjacent clamping frames 1 spaced at corresponding distances and fitted onto the pipe 3. Each clamping frame includes multiple sections of angle steel 101, with adjusting elongated holes 102 at both ends. Locking bolts 103 engage with the holes 102, connecting the multiple sections of angle steel 101 end-to-end to form a polygon, clamping the pipe 3 and achieving circumferential reinforcement with stirrups, thus completing the circumferential reinforcement operation. Multiple sets of tie rod reinforcement 2 are arranged parallel to the axial direction of the pipe 3, connecting the multiple sets of clamping frames 1 that have completed the clamping operation into a single unit, completing the axial reinforcement of the pipe 3. The pulley traction mechanism 5 is fixedly mounted on the pipe 3, including a first pulley assembly 51, a second pulley assembly 52, and a traction device. The guide rope 53, along with the other three components, pulls the loosened clamping frame 1 to the designed position, ensuring the planar consistency of multiple clamping frames 1 for the next clamping operation. After the traction operation is completed, the pulley traction mechanism 5 is removed. The wooden blocks 6 support and level the pipe 3, facilitating the initial welding of the pipe 3 and the installation of the clamping frames 1. The crane lifts the pipe 3, which has undergone circumferential and axial reinforcement, to the installation position within the reinforced concrete structure. The connection and positioning assembly includes connectors and positioning supports. The positioning supports provide support and positioning for the lifted pipe 3, and the connectors bind and secure the clamping frames 1, tie rods 2, and surrounding reinforced concrete structure. This reinforcement system of the present invention, by installing clamping frames 1 and tie rods 2 on the pipe outside the line in advance, replaces the need for in-line reinforcement, reducing the workload of the operator, allowing construction in open areas, improving work efficiency, and reducing the consumption of steel reinforcement materials.

[0055] In this embodiment of the invention, the pipe 3 is assembled and welded in sections on wooden blocks 6 placed outside the pipeline. The reinforcement work is also carried out outside the concrete structure construction line, eliminating the need for workers to perform construction within the confined space inside the pipeline, thus improving work efficiency and reducing labor intensity. By providing support with wooden blocks 6 at the bottom of the pipe 3, deformation due to uneven local stress is prevented. Simultaneously, the wooden blocks 6 provide operating space at the bottom of the pipe 3, facilitating welding, flaw detection, and reinforcement operations, thereby improving operational safety and construction efficiency.

[0056] like Figure 1-2As shown in the embodiment of the invention, the clamping frame 1 is used to circumferentially clamp the pipe 3, replacing the traditional method of using circumferential reinforcement and stirrups to reinforce the pipe 3 circumferentially. This eliminates the complex reinforcement work within the line, transforming the dispersed reinforcement into modular fixing, greatly simplifying the construction process. The clamping frame 1 includes multiple angle steel sections 101. The number and length of the angle steel sections 101 can be determined according to the diameter of the pipe 3, and the design layout can be completed in advance through BIM technology simulation to ensure precise matching with the curvature and stress requirements of the pipe 3. For example, for a pipe with a diameter of Φ1400, after BIM design simulation, it is determined that 6 angle steel sections, each with a length of 1.5m, are used to form a hexagonal structure (a polygon that fits against the outer wall of the pipe). This achieves circumferential reinforcement. The number of angle steel 101 segments must be sufficient to ensure that the polygon formed after assembly fits tightly against the outer wall of the pipe 3, avoiding excessive local gaps that could lead to unstable reinforcement. The larger the diameter of the pipe 3, the more angle steel 101 segments are required. The length of the angle steel 101 segments is calculated based on the pipe diameter and then the length of each segment is allocated according to the number of angle steel segments to ensure that the diameter of the inscribed circle of the polygon after assembly is consistent with the outer diameter of the pipe. For example, the circumference of a Φ1400 pipe is approximately 4398mm. Six angle steel segments, each 1500mm long, are connected end to end to ensure that the polygon fits snugly against the pipe. The design of the number and length of the angle steel 101 segments ensures the stress distribution of each segment, avoiding local stress concentration due to insufficient number or length of segments.

[0057] In this embodiment of the invention, the angle steel 101 is provided with adjusting elongated holes 102 at both ends. A locking bolt 103 passes through the adjusting elongated holes 102 and connects to a nut, thereby connecting adjacent angle steels 101 and forming a polygon by sequentially connecting multiple angle steels 101 end to end. Furthermore, by connecting the locking bolt 103 through the adjusting elongated holes 102 and the nut, when the nut is not tightened, adjacent angle steels 101 can slide along the adjusting elongated holes 102, thereby adjusting the inner diameter of the clamping frame 1, so that the clamping frame 1 is in a loose state, allowing it to easily fit onto the pipe 3. During traction operations, the angle steel 101 and the pipe 3 only have a slight contact, avoiding hard contact with the pipe during movement and reducing the risk of local friction or jamming. After traction is completed, gravity keeps the multiple clamping frames 1 in the loose state horizontal, ensuring the planar consistency of multiple sets of clamping frames 1. After traction positioning is completed, the locking bolt 103 is tightened to clamp the angle steel 101 onto the pipe 3, completing the final fixation.

[0058] Furthermore, for the circumferential reinforcement of other sections of pipe 3, clamping can be performed after the plane of the clamping bracket 1 is perpendicular to the pipe section, thus completing the circumferential reinforcement of that pipe section.

[0059] like Figure 3-6As shown, the pulley traction mechanism 5 is used to pull multiple sets of clamping frames 1 to a designated position, including a first pulley assembly 51, a second pulley assembly 52, and a traction rope 53; the first pulley assembly 51 and the second pulley assembly 52 are respectively located at both ends of the top of the horizontal section of the pipe 3; wherein the first pulley assembly 51 includes a first pulley bracket 511, a first handle 512, and a first pulley 513, the first pulley bracket 511 is fixed to one end of the top of the horizontal section of the pipe 3 by welding, and the first pulley is rotatably mounted on it; the first handle 512 is fixedly connected to one end of the central shaft of the first pulley 513, and the first pulley is rotatably mounted on it by rotation. The first handle 512 is turned to rotate the first pulley 513, thereby performing the winding and unwinding of the traction rope 53. The second pulley assembly 52 has the same structure as the first pulley assembly 51 and is fixedly installed at the other end of the top of the horizontal section of the pipe 3. It includes a second pulley bracket, a second handle, and a second pulley. One end of the traction rope 53 is wound and connected to the first pulley assembly 51, and the other end passes through the threading holes 104 provided on the multiple sets of clamping frames 1 in sequence and is wound and fixed in the groove of the second pulley. By rotating the second handle, the traction rope 53 is tightened, causing the multiple sets of clamping frames 1 on the traction rope 53 to move synchronously toward the fixed pulley 2.

[0060] Furthermore, in order to enable multiple sets of clamping brackets 1 to be positioned simultaneously on the horizontal section of the pipe 3, the traction rope 53 is equipped with multiple rope clamp baffles 54. The multiple rope clamp baffles 54 are arranged according to the design spacing of the clamping brackets 1. Driven by the traction rope 53, the rope clamp baffles 54 push the corresponding clamping brackets 1 to the design position, thus achieving the purpose of positioning multiple sets of clamping brackets 1 with one traction. When installing the rope clamp baffles 54, lay the traction rope 53 flat on a level construction site outside the line, ensuring that the traction rope 53 is free from twisting or knotting to avoid affecting the accuracy of the spacing measurement. Taking the end that passes through the second pulley as the origin, mark the installation positions of the rope clamp baffles 54 one by one on the traction rope 53 according to the intervals of the clamping frames 1. Connect both ends of the traction rope 53 to the first pulley assembly 51 and the second pulley assembly 52 respectively, and pass them through the wire holes 104 of multiple clamping frames 1. Install and fix the rope clamp baffles 54 sequentially on the marked positions on the traction rope 53, so that each rope clamp baffle 54 is located between adjacent clamping frames 1, forming a sequential arrangement structure of "clamping frame - rope clamp baffle - clamping frame". By rotating the second handle, the traction rope 53 is tightened, and the corresponding rope clamp baffle 54 pushes the clamping frame 1 to the designed position. By installing rope clamp baffles 54 on the guide rope 53, multiple sets of clamping frames 1 can reach the design position at once, eliminating the need for manual positioning, measurement, and calibration of each frame, significantly shortening the installation time of the clamping frames 1, and reducing the labor intensity of the workers. At the same time, the rope clamp baffles 54 provide synchronous and uniform resistance to each set of clamping frames 1, preventing any set of clamping frames 1 from arriving at the position prematurely or lately due to uneven force, ensuring that all clamping frames 1 are in the same axial plane when they stop moving, eliminating the need for subsequent manual adjustment of the plane position and reducing construction errors.

[0061] In this embodiment of the invention, a pulley traction mechanism 5 is provided to solve the operational limitations of installing clamping brackets 1 on large-diameter pipes: large-diameter pipes are large in size and heavy in weight, and when the clamping bracket 1 is installed directly at a predetermined position, it is difficult for construction personnel to flexibly adjust the position on the outside of the pipe. However, the pulley traction mechanism 5 can easily move the reinforcement device along the axial direction of the pipe by changing the direction of force and cooperating with the traction rope 53, without the need for manual handling or prying, which is especially suitable for scenarios with long pipe lengths and a large number of clamping brackets 1. By passing the traction rope 53 through multiple sets of clamping brackets 1 and using the rope clamp baffle 54 to control the spacing (such as setting one every 500mm), it can be ensured that all clamping brackets 1 are on the same plane, avoiding directional deviation caused by manual installation errors. During the traction process, the position of the rope clamp baffle 54 can be adjusted to flexibly change the spacing of the clamping brackets 1 to adapt to different construction design requirements.

[0062] In this embodiment of the invention, after completing the traction and positioning operation of the clamping frame 1, the rope clamp baffle 54 is removed, the traction rope 53 is pulled out, and the pulley bracket is cut off, thus completing the dismantling of the pulley traction mechanism 5. When performing the next circumferential reinforcement operation, for each group of angle steel 101, the fit between each angle steel and the outer wall of the pipe 3 is checked one by one. The locking bolts 103 are finely adjusted along the adjusting elongated hole 102 and initially tightened to ensure that the inner side of each section of angle steel 101 is tightly fitted to the pipe 3. If there are gaps in certain areas, the overlap length of adjacent angle steel 101 can be shortened to ensure that the clamping frame 1 forms a uniform circumferential clamping force on the pipe 1. After the fit adjustment is completed, all locking bolts 103 are thoroughly tightened, so that the multiple sections of angle steel 101 form a circumferential rigid frame, firmly clamping the outer wall of the pipe 3, replacing the traditional "ring reinforcement + stirrups," and preventing radial displacement or shaking of the pipe 3 during concrete pouring.

[0063] After completing the circumferential reinforcement of pipeline 3, multiple clamping frames 1 are connected together axially using tie rods 2 for axial reinforcement. A connection hole is pre-drilled on the angle steel 101 (this connection hole can be used as a wire hole 101 during traction and positioning operations). After the traction operation is completed, multiple tie rods 2 are inserted into the corresponding connection holes, which, in conjunction with the pulley traction mechanism 5, ensures the planar consistency of the multiple clamping frames 1. After completing the circumferential reinforcement of pipeline 3, the junction of the tie rods 2 and the angle steel 101 is fully welded and fixed using arc welding, thereby completing the axial reinforcement of pipeline 3.

[0064] In this embodiment of the invention, the connection and positioning assembly positions and connects the reinforced pipe 3 within the reinforced concrete structure skeleton. It includes a connector and a positioning saddle. The positioning saddle is fixedly installed within the reinforced concrete structure skeleton to support and position the pipe 3, ensuring that the pipe 3 is in the designed position within the reinforced concrete structure skeleton. The connector includes binding wire, which binds and secures the clamping frame 1, the tie rod 2, and the surrounding reinforced concrete skeleton.

[0065] The large-diameter pipeline pre-embedded reinforcement system of the present invention achieves high efficiency, precision and lightweight reinforcement of large-diameter pipelines through modular design, off-line pre-installation and mechanical traction, taking into account construction safety and cost control, and is significantly superior to traditional steel reinforcement methods.

[0066] The large-diameter pipe pre-embedded reinforcement system of the present invention transfers the core processes such as pipe assembly and welding, clamping frame installation, and tie rod reinforcement connection to an open space outside the concrete structure. It can be carried out simultaneously with the concrete structure construction (such as pipe reinforcement being completed simultaneously during the structural reinforcement binding), avoiding the traditional serial construction mode of "structure first, pipe later", greatly reducing the time of cross-operation, and is especially suitable for projects with tight schedules such as large-scale metallurgical construction.

[0067] The large-diameter pipe pre-embedded reinforcement system of the present invention replaces the traditional on-site binding of ring bars and stirrups with prefabricated clamping frames, and replaces longitudinal reinforcement with tie rod steel bars connected in series with clamping frames, transforming the scattered steel reinforcement work into modular assembly and reducing the complex reinforcement operation within the line.

[0068] The large-diameter pipe pre-embedded reinforcement system of the present invention, with the help of the pulley traction mechanism and the rope clamp baffle, realizes the one-time traction and synchronous positioning of multiple sets of clamping frames; there is no need for manual handling and calibration of the clamping frame position one by one, but only by turning the pulley handle can multiple sets of clamping frames be moved along the pipe axis, and the rope clamp baffle can accurately control the spacing, saving the repetitive process of manual measurement and adjustment, and improving the installation efficiency of clamping frames by more than 60%.

[0069] The large-diameter pipe pre-embedded reinforcement system of the present invention consists of a clamping frame composed of multiple sections of angle steel with adjustable elongated holes connected by locking bolts. The inner diameter of the clamping frame can be changed by adjusting the overlap length of the angle steel, eliminating the need to customize special reinforcement parts for pipes of different diameters. This solves the limitation of the traditional U-shaped block that is "one pipe, one specification" and is suitable for large-diameter pipes of various diameters.

[0070] The large-diameter pipe pre-embedded reinforcement system of the present invention is suitable for various complex pipe sections. For different pipe sections such as horizontal sections, vertical sections, and bending sections, only the vertical angle between the plane of the clamping frame and the pipe body needs to be adjusted (for example, the plane of the clamping frame needs to be horizontal in vertical sections) to complete the circumferential reinforcement. The tie rod steel bars can be flexibly arranged according to the pipe direction without changing the core structure, which is suitable for complex scenarios with multiple pipe directions in metallurgical construction.

[0071] The large-diameter pipe pre-embedded reinforcement system of the present invention uses BIM technology to simulate the pipe diameter and stress requirements in advance, and accurately designs the number, length and spacing of angle steel and clamping brackets to ensure the compatibility of the reinforcement system with the pipe and concrete structure, avoid on-site rework and adjustment, and is especially suitable for industrial pipe pre-embedded projects with high precision requirements.

[0072] The large-diameter pipe pre-embedded reinforcement system of the present invention avoids the hidden dangers of on-line operation. In traditional processes, construction workers need to carry out reinforcement work in concrete structures (such as the bottom of the foundation or areas with dense reinforcement), which poses risks of collision and fall due to confined space, and welding sparks can easily ignite debris inside the structure. The core processes of this system are all completed in open spaces outside the line, with a wide working environment and no risk of space restriction.

[0073] The large-diameter pipe pre-embedded reinforcement system of the present invention,

[0074] like Figure 9 As shown, the present invention also provides a method for pre-embedding and reinforcing large-diameter pipes within a concrete structure, comprising the following steps:

[0075] S100: Complete the segmented assembly and welding of pipe 3 on the wooden blocks 6 placed outside the line;

[0076] S200: Based on BIM technology, lay out the angle steel 101 and confirm its length and quantity;

[0077] S300: Complete the assembly of clamping bracket 1 and fit it onto the horizontal section of pipe 3;

[0078] S400: Install pulley traction mechanism 5, and use traction rope 53 to pass through the wire hole 104 on multiple sets of clamping frames 1 to pull multiple sets of clamping frames 1 to the design position respectively.

[0079] S500: Pass multiple sets of tie rods 2 through the corresponding angle steel 101 to make the plane of multiple clamping frames 1 consistent;

[0080] S600: Disassemble the pulley traction mechanism 5, adjust the overlap length between adjacent angle steels 101 and lock them, so that the clamping frame 1 clamps the outer wall of the pipe 3 to complete the circumferential reinforcement;

[0081] S700: The junction of the tie rod steel bar 2 and the angle steel 101 is fully welded and fixed by electric arc welding, thereby completing the axial reinforcement of the pipe 3;

[0082] S800: The reinforced pipe 3 is hoisted into the concrete structure steel reinforcement cage, and the positioning is completed by positioning trestles. The clamping frame 1, tie rod steel bar 2 and the surrounding steel reinforcement cage are tied together with tie wire.

[0083] S900: The concrete structure is poured simultaneously to complete the construction.

[0084] In this embodiment of the invention, step S400, which involves pulling the multiple sets of clamping brackets 1 to their designed positions, includes the following steps:

[0085] S401: Install the first pulley assembly 51 and the second pulley assembly 52 at the top ends of the horizontal section of pipe 3, respectively;

[0086] S402: Mark the installation positions of the rope clamp baffles 54 one by one on the traction rope 53 according to the interval of the clamping frame 1;

[0087] S403: One end of the traction rope 53 is wound and connected to the first pulley assembly 51, and the other end is passed through the threading holes 104 provided on the multiple sets of clamping frames 1 in sequence, and then wound and fixed in the groove of the second pulley.

[0088] S404: Install and fix the rope clamp baffles 54 sequentially on the marked positions on the traction rope 53, so that each rope clamp baffle 54 is located between adjacent clamping frames 1, forming a sequential arrangement structure of "clamping frame-rope clamp baffle-clamping frame";

[0089] S405: By rotating the second handle, the traction rope 53 is tightened, and the corresponding rope clamp baffle 54 pushes the locking frame 1 to the designed position.

[0090] In this embodiment of the invention, step S600, adjusting the overlap length between adjacent angle steels 101 and locking them, includes the following steps:

[0091] S601: For each group of angle steel 101, check the fit between each one and the outer wall of the pipe 3. Fine-tune the locking bolt 103 along the adjusting long hole 102 and tighten it initially so that the inner side of each section of angle steel 101 fits tightly against the pipe 3.

[0092] S602: There are gaps in some areas. By shortening the 101 overlap length of adjacent angle steel, it is ensured that the clamping bracket 1 forms a uniform circumferential clamping force on the pipe 1.

[0093] S603: After the fit adjustment is completed, tighten all locking bolts 103 thoroughly so that the multi-section angle steel 101 forms a circumferential rigid frame and firmly clamps the outer wall of the pipe 3.

[0094] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A reinforcement system for pre-embedded large-diameter pipes within a concrete structure, characterized in that, It comprises: Pipeline (3), which completes the segment assembly and welding operation on the cushion (6) placed outside the line; A plurality of sets of clamping frames (1) are spaced apart by a corresponding distance and are sleeved on the pipeline (3), which comprises a plurality of angle steels (101), the adjacent angle steels (101) are slightly adjusted to overlap and are locked to make the clamping frame (1) clamp the outer wall of the pipeline to complete the circumferential reinforcement work; A plurality of sets of pull rod steels (2) are arranged axially in parallel along the pipeline (3), which connects a plurality of sets of clamping frames (1) that have completed the clamping work to form a whole to complete the axial reinforcement of the pipeline (3); The pulley traction mechanism (5) fixedly arranged on the pipeline (3) comprises a first pulley assembly (51), a second pulley assembly (52) and a traction rope (53), which cooperate to pull the clamping frame (1) in a loosened state to the designed position to ensure the planar consistency of the plurality of clamping frames (1) for the next clamping work, and the pulley traction mechanism (5) is removed after the traction work is completed; And a connecting and positioning assembly, which comprises a connecting piece and a positioning horse stool, the positioning horse stool supports and positions the pipeline (3) that has completed the reinforcement work in the concrete structure reinforcement framework, and the connecting piece binds and connects the clamping frame (1), the pull rod steel (2) and the surrounding concrete structure reinforcement framework.

2. A system for embedding and reinforcing large diameter pipes in concrete structures according to claim 1, characterized in that, The angle steel (101) is provided with an adjusting long hole (102) at both ends, a locking bolt (103) passes through the adjusting long hole (102) and is connected with a nut, so that the connection of the adjacent angle steels (101) is realized.

3. A system for embedding and reinforcing large diameter pipes in concrete structures according to claim 2, wherein The angle steel (101) is provided with a connecting hole, a plurality of pull rod steels (2) are respectively inserted into the corresponding connecting holes, and the planar consistency of the plurality of clamping frames (1) is ensured by cooperating with the pulley traction mechanism (5).

4. A system for pre-embedding and reinforcing large diameter pipes in concrete structures according to any one of claims 1-3, characterized in that, The first pulley assembly (51) and the second pulley assembly (52) are respectively arranged at both ends of the top of the horizontal section of the pipeline (3); wherein the first pulley assembly (51) comprises a first pulley support (511), a first handle (512) and a first pulley (513); the second pulley assembly (52) has the same structure as the first pulley assembly (51), and is fixedly arranged at the other end of the top of the horizontal section of the pipeline (3) and comprises a second pulley support, a second handle and a second pulley.

5. A system for embedding and reinforcing large diameter pipes in concrete structures according to claim 4, wherein One end of the traction rope (53) is wound and connected with the first pulley assembly (51), and the other end is sequentially inserted into the threading holes (104) provided on the plurality of clamping frames (1) and then wound and fixed in the groove of the second pulley.

6. A system for embedding and reinforcing large diameter pipes in concrete structures according to claim 4, wherein A plurality of rope clip stop plates (54) are provided on the traction rope (53), and the plurality of rope clip stop plates (54) are arranged according to the designed spacing of the clamping frame (1); a single rope clip stop plate (54) is located between adjacent clamping frames (1).

7. A system for embedding and reinforcing large diameter pipes in a concrete structure according to any one of claims 1-3, wherein, The positioning horse stool is fixedly arranged in the concrete structure reinforcement framework to support and position the pipeline (3), so that the pipeline (3) is in the designed position in the concrete structure reinforcement framework; the connecting piece comprises a binding wire, which binds and connects the clamping frame (1), the pull rod steel (2) and the surrounding reinforcement framework.

8. A method of embedding and reinforcing a large diameter pipe in a concrete structure, characterized by, It comprises the following steps: S100: completing the segmented assembly and welding operation of the pipeline (3) on the cushion (6) placed outside the line; S200: according to the lofting of BIM technology, confirming the length and quantity of the angle steel (101); S300: complete the assembly of the clamping frame (1) and set it on the horizontal section of the pipeline (3); S400: install the pulley traction mechanism (5), pass the traction rope (53) through the threading hole (104) on the clamping frame (1), and pull the clamping frame (1) to the designed position; S500: pass the plurality of pull rod steels (2) through the corresponding angle steels (101) to make the plane of the plurality of clamping frames (1) consistent; S600: disassemble the pulley traction mechanism (5), adjust the overlap length between the adjacent angle steels (101) and lock them to make the clamping frame (1) clamp the outer wall of the pipeline (3) and complete the circumferential reinforcement; S700: full welding is performed on the intersection of the pull rod steel (2) and the angle steel (101) by arc welding to complete the axial reinforcement of the pipeline (3); S800: hoist the reinforced pipeline (3) into the concrete structure reinforcement framework, support and position it by the positioning horse stool, and bundle and fix the clamping frame (1), the pull rod steel (2) and the surrounding reinforcement framework by the wire; S900: pour the concrete at the same time as the concrete structure to complete the construction.

9. A method of embedding and reinforcing a large diameter pipe in a concrete structure according to claim 8, wherein In step S400, the plurality of clamping frames (1) are pulled to the designed position, which includes the following steps: S401: install the first pulley assembly (51) and the second pulley assembly (52) at the top of the horizontal section of the pipeline (3); S402: mark the installation position of the rope clamp baffle (54) on the traction rope (53) according to the interval distance between the clamping frames (1); S403: one end of the traction rope (53) is wound and connected with the first pulley assembly (51), and the other end is wound and fixed in the groove of the second pulley after passing through the threading hole (104) on the plurality of clamping frames (1); S404: install and fix the rope clamp baffle (54) on the marked position of the traction rope (53) to make a single rope clamp baffle (54) located between the adjacent clamping frames (1) and form the arrangement structure of "clamping frame-rope clamp baffle-clamping frame"; S405: rotate the second handle to tighten the traction rope (53) and push the clamping frame (1) to the designed position.

10. The method of claim 8, wherein, In S600, the overlap length between the adjacent angle steels (101) is adjusted and locked, which includes the following steps: S601: check the fit of each angle steel (101) with the outer wall of the pipeline (3) one by one, and adjust and preliminarily tighten the lock bolt (103) along the adjusting long hole (102) to make the inner side of each angle steel (101) tightly fit the pipeline (3); S602: shorten the overlap length of the adjacent angle steels (101) to ensure that the clamping frame (1) forms uniform circumferential clamping force on the pipeline (3); S603: after the fit adjustment is completed, tighten all the lock bolts (103) to make the plurality of angle steels (101) form a circumferential rigid frame and firmly clamp the outer wall of the pipeline (3).

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