Elastic supporting track beam reinforcing structure and construction method

Abstract

The invention discloses an elastic supporting track beam reinforcing structure and a construction method, and relates to the technical field of track beam reinforcing. The reinforcing structure comprises a track beam, a steel pipe pile, a supporting assembly and an elastic connecting assembly. The steel pipe pile is located below the side of the track beam. The double-spliced profile steel in the supporting assembly is located between the steel pipe pile and the track beam. The steel pipe piles are fixedly connected with the double-section steel, and the load of the track beam is transmitted to the steel pipe piles and the double-section steel through the elastic connecting assemblies. The elastic connecting assembly is located between the double-spliced profile steel and the track beam. The construction method comprises the steps that a panel is chiseled away to reserve a pile sinking space; steel pipe piles are immersed, and connecting components are welded; supporting beams are installed and welded to form an integral supporting frame; angle steel is welded to form a grouting die cavity, underwater grouting materials are poured, and joints are sealed through elastic caulking materials after solidification; and the upper panel is recovered through cast-in-place. Loads can be effectively distributed, the durability of the structure is improved, and meanwhile the advantages of being short in construction time and small in influence on operation are achieved.

Description

Technical Field

[0001] This invention relates to the field of track beam reinforcement technology, and in particular to a reinforced structure and construction method for elastically supported track beams. Background Technology

[0002] Track beams are key load-bearing components that support track lines and bear and transmit the loads of moving machinery to the underlying foundation. When it is necessary to upgrade loading and unloading machinery or increase the load-bearing capacity of track beams, the track beams need to be reinforced and modified. Most existing reinforcement technologies are traditional civil engineering reinforcement methods, the core idea of ​​which is to enhance or replace the original structure to bear part of the load.

[0003] The common approach is to remove the track beam, install single piles, and then restore the track beam. This method has a simple stress pattern and requires fewer piles. However, this method involves a large amount of concrete removal work, a long construction period, and has a significant impact on the wharf structure and operation. Furthermore, the pile tops are rigid supports, which places high demands on the strength of the track beam and requires a large amount of reinforcement.

[0004] For example, Chinese invention patent CN114991071A (publication date: September 2, 2022) discloses a simple, spreader-type lifting platform for wharf reinforcement, comprising: multiple steel pad beams, any one of which is placed on the crossbeam along the length of the wharf's crossbeam and fixedly connected to the crossbeam; multiple spreader-type steel beams, with both ends of any one of which is placed on the steel pad beams on two adjacent crossbeams and fixedly connected to the steel pad beams respectively; multiple spreader-type steel beams spaced apart along the length of the crossbeam; multiple upper-level transverse connecting pipes spaced apart on the multiple spreader-type steel beams to form an upper-level working platform; multiple vertical connecting pipes connected to the multiple upper-level transverse connecting pipes via fasteners; and multiple lower-level transverse connecting pipes located below the crossbeam and connected to the multiple vertical connecting pipes via fasteners to form a lower-level working platform. This invention can simultaneously meet the reinforcement construction requirements of both crossbeams and longitudinal beams, has a simple structure, and is convenient to operate.

[0005] Chinese invention patent CN117005331A (publication date: November 7, 2023) discloses a rapid process and device for beam reinforcement and support replacement. The preload limiting spring support includes a sleeve and a rubber composite spring. A support block is provided on the inner wall of the sleeve, and the support block is connected to the lower pressure plate of the spring. One end of the nut anti-loosening spring is installed on the lower pressure plate of the spring, and the other end of the nut anti-loosening spring is installed on the nut. The nut is threaded to one end of the spring preload bolt, and the other end of the spring preload bolt extends out of the opening of the lower pressure plate of the spring and is connected to one end face of the upper pressure plate of the spring. The rubber composite spring is installed between the upper pressure plate of the spring and the lower pressure plate of the spring. The upper pressure plate of the spring is equipped with a guide ring and a corresponding connecting ear plate. The other end of the sleeve is equipped with a cover plate, and a corresponding connecting ear plate is installed on the cover plate. The two connecting ear plates of the preload limiting spring support are respectively installed on the lower end face of the beam and the side wall of the middle pier through connectors.

[0006] Existing reinforcement methods involve large engineering workloads, long construction periods, and significant impacts on wharf structures and operations. To address the challenges of controlling the construction period and providing support in the reinforcement and renovation of wharf structure track beams, it is necessary to develop a flat-pole type track beam reinforcement structure that can adapt to short construction periods and elastic support. Summary of the Invention

[0007] In view of the shortcomings of the prior art, the present invention provides an elastic support track beam reinforcement structure, including: track beam, steel pipe pile, support component and elastic connection component; The track beam includes a front track beam and a rear track beam; The steel pipe piles are located below the side of the track beam; The support assembly is located between the steel pipe piles and the track beam; The steel pipe piles are fixedly connected to the double-section steel, and the load of the track beam is transferred to the steel pipe piles and the double-section steel through the elastic connection components. The elastic connection assembly is located between the double-section steel and the track beam.

[0008] Furthermore, the elastic connection assembly includes angle steel, underwater grouting material, and elastic caulking material; Furthermore, the horizontal side of the angle steel is fixedly connected to the side of the track beam, and the bottom side of the horizontal side of the angle steel is fixedly connected to the top of the double-section steel, together with the side of the track beam, forming a template for injecting underwater grout. Furthermore, the underwater grouting material is a DSP-modified cement-based grouting material; after the underwater grouting material solidifies, the vertical joint between the angle steel and the track beam is filled with polypropylene elastic sealant to prevent the grouting material from leaking out and to isolate the water body, thereby extending the durability of the grouting material.

[0009] Furthermore, the angle steel is set around the track beam, with the ends of the horizontal right-angled sides welded and fixed to the side of the track beam, and the bottom welded and fixed to the upper part of the double-section steel, serving as a template for pouring underwater grout.

[0010] Furthermore, the steel pipe piles are used as newly added fixed pile foundations and are driven into place by removing part of the panel to form pile holes; the steel pipe piles are located on both sides of the mid-span of the track beam, with two piles at each location, and the top of the piles is provided with grooves for embedding and positioning the double-section steel.

[0011] Furthermore, the support assembly includes double-section steel, stiffening plates, corbel ribs, and connecting plates.

[0012] Furthermore, the double-section steel is fixedly connected to the steel pipe pile through the groove at the top of the steel pipe pile; the stiffening plate is symmetrically welded to the inner side of the double-section steel; the corbel rib is located on both sides of the steel pipe pile; and the connecting plate is welded to the side of the steel pipe pile.

[0013] Furthermore, the double-section steel is located between the pile top and the track beam, embedded in the groove at the pile top, and acts as a supporting beam; the double-section steel is welded and fixed to the steel pipe pile through connecting plates and stiffening plates, and each double-section steel is connected to two steel pipe piles at the bottom to form a stable portal frame support.

[0014] Furthermore, the corbel rib plate is a sample steel structure, symmetrically welded to both sides of the steel pipe pile, and the top of the corbel rib plate is fixedly connected to the bottom of the double-section steel, providing additional vertical support for the double-section steel.

[0015] Furthermore, the stiffening plates consist of several pieces, which are vertically welded to the inner side of the double-section steel and arranged at intervals along the length of the double-section steel. The spacing between them is determined according to the shear force distribution of the supporting beam.

[0016] Furthermore, there are four connecting plates, evenly distributed on the side of the steel pipe pile; the connecting plates are arc-shaped, matching the outer wall of the steel pipe pile, and welded to the upper side of the steel pipe pile, with the upper part of the connecting plates reliably welded to the double-section steel.

[0017] This invention also provides a construction method for a flexible support track beam reinforcement structure, comprising the following steps: S1: Remove part of the panel to leave space for pile driving; S2: Components for driving steel pipe piles, welding steel bracket ribs and connecting plates, and processing steel support components; S3: Install double-section steel sections, accurately embed them into the groove at the top of the steel pipe pile, and weld the connecting plate and stiffening plate to connect the support components and the steel pipe pile into a whole. S4: Weld angle steel to form a closed grouting cavity, then pour underwater grout, and after solidification, fill the gap between the angle steel and the track beam with elastic caulking material; S5: Cast-in-place upper panel, restore the dock surface layer.

[0018] Compared with existing technologies, the advantages and effects of this application are as follows: 1. When upgrading loading and unloading machinery or increasing the load-bearing capacity of track beams, it is necessary to reinforce and modify the track beams. Most existing technologies choose to reinforce the track beams or remove the track beams and then add single piles and restore the track beams. This application solves the problem that traditional reinforcement methods cannot effectively adapt to dynamic loads by establishing a collaborative force-bearing path of track beam-grouting material force transmission layer-elastic caulking material-double-section steel-steel pipe pile.

[0019] 2. The corbel plates in this application provide support for the supporting beams and prevent them from slipping accidentally; the stiffening plates ensure the rigidity and strength of the joint area; the sealing system composed of angle steel and elastic caulking material effectively isolates moisture, protects the underwater grout and steel structure, and ensures the long-term durability of the reinforcement system in harsh environments.

[0020] 3. The solution provided in this application only requires the removal of a portion of the panel, resulting in a small workload and a short construction period. The main steel structure components, such as double-section steel and connecting plates, can be prefabricated in the factory and installed on-site, reducing on-site welding time. Compared with traditional methods that require extensive removal of concrete and long-term maintenance, the construction process of this application is clear, and it can make full use of the dock operation intervals for construction, greatly shortening the construction period and minimizing interference with transportation and dock operations.

[0021] 4. This application reduces the strength requirements of the track beam to be reinforced, eliminating the need for excessive reinforcement and saving overall project costs.

[0022] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the preferred embodiments of this application are described in detail below with reference to the accompanying drawings.

[0023] The above and other objects, advantages and features of this application will become more apparent to those skilled in the art from the following detailed description of specific embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In all drawings, similar elements or parts are generally identified by similar reference numerals. The elements or parts in the drawings are not necessarily drawn to scale.

[0025] in: Figure 1 This is a schematic diagram of the overall structure of the wharf; Figure 2 This is an overall schematic diagram of the reinforced structure; Figure 3 This is a side view of the reinforced structure; Figure 4 This is a top view of the reinforced structure.

[0026] Wherein: 1-track beam; 11-front track beam; 12-rear track beam; 2-steel pipe pile; 3-support component; 31-double-section steel; 32-stiffening plate; 33-bracket rib plate; 34-connecting plate; 4-elastic connection component; 41-angle steel; 42-underwater grouting material; 43-elastic caulking material; 5-pile driving hole. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. In the following description, specific details such as specific configurations and components are provided merely to help fully understand the embodiments of this application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. In addition, for clarity and brevity, descriptions of known functions and structures are omitted in the embodiments.

[0028] It should be understood that the phrase "an embodiment" or "this embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "an embodiment" or "this embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0029] Furthermore, reference numerals and / or letters may be repeated in different examples within this application. Such repetition is for the purpose of simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or settings discussed.

[0030] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" describes another type of relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it have an "or" relationship.

[0031] In this article, the term "at least one" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, "at least one of A and B" can mean: A exists alone, A and B exist simultaneously, or B exists alone.

[0032] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion.

[0033] Example 1 This embodiment uses a 17m wide wharf and a 0.6m wide track beam as an example to introduce the elastic support track beam reinforcement structure. Please refer to the appendix. Figure 1 , 2 And 4, attached Figure 1 This is a schematic diagram of the overall structure of the wharf; attached. Figure 2 This is an overall schematic diagram of the reinforced structure; attached. Figure 4 This is a top view of the reinforced structure.

[0034] The structure includes: track beam 1, steel pipe pile 2, support assembly 3, and elastic connection assembly 4; The track beam 1 includes a front track beam 11 and a rear track beam 12; The original wharf is connected to the prestressed square piles through the lower pile foundation. Each frame of the lower pile foundation is equipped with 4 prestressed square piles. The front track beam 11 and the rear track beam 12 in the upper beam and slab structure are reinforced and modified. The steel pipe pile 2 is located below the side of the track beam 1; The support component 3 is located between the steel pipe pile 2 and the track beam 1; The steel pipe pile 2 is fixedly connected to the double-section steel 31, and the load of the track beam 1 is transferred to the steel pipe pile 2 and the double-section steel 31 through the elastic connection component 4. The elastic connection component 4 is located between the double-section steel 31 and the track beam 1.

[0035] Preferably, the steel pipe pile 2 is used as a newly added fixed pile foundation and is driven into place by removing part of the panel to form the pile hole 5; the steel pipe pile 2 is located on both sides of the mid-span of the track beam 1, with 2 piles at each location, and the top of the pile is provided with a groove for embedding and positioning the double-section steel 31.

[0036] Preferably, the support component 3 includes double-section steel 31, stiffening plate 32, corbel rib plate 33, and connecting plate 34.

[0037] Preferably, the double-section steel 31 is fixedly connected to the steel pipe pile 2 through the groove at the top of the pile; the stiffening plate 32 is symmetrically welded to the inner side of the double-section steel 31; the corbel rib plate 33 is located on both sides of the steel pipe pile 2; and the connecting plate 34 is welded to the side of the steel pipe pile 2.

[0038] Preferably, the double-section steel 31 is located between the pile top and the track beam 1, and is embedded in the groove at the pile top, serving as a supporting beam; the double-section steel 31 is welded and fixed to the steel pipe pile 2 through the connecting plate 34 and the stiffening plate 32, and each double-section steel 31 is connected to two steel pipe piles 2 at the bottom to form a stable portal frame support.

[0039] Preferably, the corbel rib plate 33 is a sample steel structure, symmetrically welded to both sides of the steel pipe pile 2, and the top of the corbel rib plate 33 is fixedly connected to the bottom of the double-section steel 31, providing additional vertical support for the double-section steel 31.

[0040] Preferably, the stiffening plate 32 consists of several pieces, which are vertically welded to the inner side of the double-section steel 31 and arranged at intervals along the length of the double-section steel 31. The spacing between them is determined according to the shear force distribution of the support beam.

[0041] Preferably, there are four connecting plates 34, which are evenly distributed on the side of the steel pipe pile 2; the connecting plates 34 are arc-shaped and match the outer wall of the steel pipe pile 2, and are welded to the upper side of the steel pipe pile 2, and the upper part of the connecting plates 34 is reliably welded to the double-section steel 31.

[0042] The technical effect achieved in this embodiment is that the stable portal frame support system composed of double-section steel, connecting plates, stiffening plates and corbel ribs tightly connects the new pile foundation with the original structure, so that they work together and greatly improve the overall stiffness and stability of the structure, which can effectively resist various complex loads.

[0043] Example 2 Based on Example 1, this example further introduces the elastic support track beam reinforcement structure. Please refer to the appendix. Figure 3 , attached Figure 3 This is a side view of the reinforced structure.

[0044] Preferably, the elastic connection component 4 includes angle steel 41, underwater grouting material 42, and elastic caulking material 43; the elastic connection component 4 is located between the double-section steel 31 and the track beam 1.

[0045] Preferably, the horizontal side of the angle steel 41 is fixedly connected to the side of the track beam 1, and the bottom side of the horizontal side of the angle steel 41 is fixedly connected to the top of the double-section steel 31, together with the side of the track beam 1 to form a template for injecting underwater grout 42. Preferably, the underwater grout 42 is made of DSP modified cement-based grouting material; after the underwater grout 42 solidifies, the vertical joint between the angle steel 41 and the track beam 1 is filled with polypropylene elastic sealant 43 to prevent the grout from leaking out and to isolate the water body, thereby extending the durability of the grout.

[0046] Preferably, the angle steel 41 is arranged around the track beam 1, with the ends of the horizontal right-angled sides welded and fixed to the side of the track beam 1, and the bottom welded and fixed to the upper part of the double-section steel 31, serving as a template for pouring underwater grout 42.

[0047] The technical effects achieved in this embodiment are as follows: standardized welding is used for key connection parts, and the grouting process is mature and controllable, which helps to ensure the final construction quality. The DSP modified cement-based grouting material has the characteristics of self-leveling, micro-expansion, and high strength, which ensures the density and load-bearing efficiency of the force transmission layer. The polypropylene elastic caulking material ensures the sealing performance under long-term deformation.

[0048] Example 3 Based on Examples 1 and 2, this example introduces a construction method for a reinforced track beam structure with elastic support, including the following steps: S1: Remove part of the panel to leave space for pile driving; S2: Drive steel pipe pile 2, weld steel bracket rib plate 33 and connecting plate 34, and process steel support component 3; S3: Install the double-section steel 31 and accurately embed it into the groove at the top of the steel pipe pile 2. Weld the connecting plate 34 and the stiffening plate 32 to connect the support component 3 and the steel pipe pile 2 into a whole. S4: Weld angle steel 41 to form a closed grouting cavity, then pour underwater grout 42, and after solidification, fill the gap between angle steel 41 and track beam 1 with elastic caulking material 43; S3: Cast-in-place upper panel, restore the dock surface layer.

[0049] The technical effect achieved by this embodiment is as follows: This construction method constructs a track beam reinforcement system with elastic buffer function by combining modular prefabrication and on-site assembly. By installing double-section steel support frames and injecting underwater grout, an elastic force transmission layer is formed between the track beam and the support components. Combined with the elastic caulking material at the joints, they together form an elastic support system, ensuring the long-term durability and safety reliability of the structure.

[0050] The above description is merely a preferred embodiment of the present invention and does not limit the scope of protection of the present invention. Various modifications and variations are possible with respect to the present invention. Any changes, modifications, substitutions, integrations, and parameter alterations to these embodiments within the spirit and principles of the present invention fall within the scope of protection defined by the claims of the present invention.

Claims

1. A flexible support structure for reinforcing track beams, including: Track beam (1), steel pipe pile (2), support assembly (3) and elastic connection assembly (4); The track beam (1) includes a front track beam (31) and a rear track beam (32); The steel pipe pile (2) is located below the side of the track beam (1); The support assembly (3) is located between the steel pipe pile (2) and the track beam (1); The steel pipe pile (2) is fixedly connected to the double-section steel (31), and the load of the track beam (1) is transferred to the steel pipe pile (2) and the double-section steel (31) through the elastic connection component (4). The elastic connection component (4) is located between the double-section steel (31) and the track beam (1).

2. The elastic support track beam reinforcement structure according to claim 1, characterized in that, The elastic connection component (4) includes angle steel (41), underwater grout (42), and elastic caulking material (43). The horizontal side of the angle steel (41) is fixedly connected to the side of the track beam (1), and the bottom side of the horizontal side of the angle steel (41) is fixedly connected to the top of the double-section steel (31), together with the side of the track beam (1) to form a template for injecting underwater grout (42); After the grout solidifies, the vertical joint between the angle steel (41) and the track beam (1) is filled with polypropylene elastic caulking material (43).

3. The elastic support track beam reinforcement structure according to claim 2, characterized in that, The angle steel (41) is set around the track beam (1), with the ends of the horizontal right angle side welded and fixed to the side of the track beam (1), and the bottom welded and fixed to the upper part of the double-section steel (31) as a template for pouring underwater grout (42).

4. The elastic support track beam reinforcement structure according to any one of claims 1-3, characterized in that, The steel pipe pile (2) is used as a newly added fixed pile foundation and is driven into place by removing part of the panel to form a pile driving hole (5); The steel pipe piles (2) are located on both sides of the mid-span of the track beam (1), with two piles at each location. The top of the piles is provided with a groove for embedding and positioning the double-section steel (31).

5. The elastic support track beam reinforcement structure according to claim 1, characterized in that, The support component (3) includes double-section steel (31), stiffening plate (32), corbel rib plate (33) and connecting plate (34); The double-section steel (31) is fixedly connected to the steel pipe pile (2) through the groove at the top of the steel pipe pile (2); the stiffening plate (32) is symmetrically welded to the inner side of the double-section steel (31); the corbel rib plate (33) is located on both sides of the steel pipe pile (2); the connecting plate (34) is welded to the side of the steel pipe pile (2).

6. The elastic support track beam reinforcement structure according to claim 5, characterized in that, The double-section steel (31) is located between the pile top and the track beam (1), and is embedded in the groove at the pile top, serving as a supporting beam; The double-section steel (31) is welded and fixed to the steel pipe pile (2) through the connecting plate (34) and the stiffening plate (32). Each double-section steel (31) is connected to two steel pipe piles (2) at the bottom to form a stable portal frame support.

7. The elastic support track beam reinforcement structure according to claim 5 or 6, characterized in that, The corbel ribs (33) are symmetrically welded to both sides of the steel pipe pile (2). The top of the corbel ribs (33) is fixedly connected to the bottom of the double-section steel (31) to provide additional vertical support for the double-section steel (31).

8. The elastic support track beam reinforcement structure according to claim 5 or 6, characterized in that, The stiffening plate (32) consists of several pieces, which are vertically welded to the inner side of the double-section steel (31) and arranged at intervals along the length of the double-section steel (31). The spacing is determined according to the shear force distribution of the support beam.

9. The elastic support track beam reinforcement structure according to claim 5 or 6, characterized in that, There are four connecting plates (34), which are evenly distributed on the side of the steel pipe pile (2); The connecting plate (34) is arc-shaped and matches the outer wall of the steel pipe pile (2). It is welded to the upper side of the steel pipe pile (2), and the upper part of the connecting plate (34) is reliably welded to the double-section steel (31).

10. The construction method of the elastic support track beam reinforcement structure according to any one of claims 1-9, characterized in that, Includes the following steps: S1: Remove part of the panel to leave space for pile driving; S2: Drive steel pipe piles (2), weld steel corbel ribs (33) and connecting plates (34), and process steel support components (3); S3: Install double-section steel (31), accurately embed it into the groove on the top of the steel pipe pile (2), weld the connecting plate (34) and stiffening plate (32) to make the support component (3) and the steel pipe pile (2) into a whole; S4: Weld angle steel (41) to form a closed grouting cavity, then inject underwater grout (42), and after solidification, fill the gap between angle steel (41) and track beam (1) with elastic caulking material (43); S5: Cast-in-place upper panel, restore the dock surface layer.

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