Upper longitudinal beam high-strength prestress pull rod connecting joint of assembly type modular steel structure trestle and mounting method of upper longitudinal beam high-strength prestress pull rod connecting joint
By using high-strength prestressed rib tie rods to connect to the sleeve in the prefabricated modular steel structure trench, the longitudinal beam connection nodes are simplified, the connection complexity and stability problems in the prior art are solved, and efficient and stable modular connections are achieved.
Patent Information
- Application Number
- CN202510771734.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-10
- Publication Date
- 2025-08-08
AI Technical Summary
The longitudinal beam connection nodes of existing prefabricated modular trests are designed in complex ways, making it difficult to ensure the firmness and convenience of modular connections, especially under wind and seismic loads, the overall stability is difficult to ensure.
High-strength prestressed rib tie rods are used to replace high-strength bolts, and equal strength connection is achieved through sleeve connections. Combined with the design of reinforcement plates and connectors, the modular connection nodes are simplified.
The isostrength connection of continuous steel trests is realized, the stability and construction efficiency of modular trests are improved, material costs are reduced, and the flexibility and scalability of trests are enhanced.
Smart Images
Figure CN120443542A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of building steel structures in civil engineering, and particularly relates to a high-strength prestressed tie rod connection node for an upper longitudinal beam of an assembled modular steel structure trestle and an installation method thereof. Background Art
[0002] The prefabricated modular trestles are a relatively new type of prefabricated structural system that not only meets the requirements of rapid construction but also enables projects to meet regulatory requirements. Its characteristics are that the main structures required for the trestles are uniformly manufactured by the factory, and the manufactured modules are uniformly transported to the construction site, allowing them to be quickly erected, effectively improving the speed and quality of construction. The amount of steel used is far less than that of traditional steel-structured trestles. Prefabricated modular trestles have a light weight and a large load-bearing capacity. Therefore, they are often used when constructing trestles for long spans and in complex terrain. The longitudinal beam connection nodes of prefabricated modular trestles are key structural components and play an important role in transferring loads and maintaining structural stability.
[0003] Existing longitudinal beam connection node designs are complex, with support frames often located mid-span between modules, limiting the structural layout. The node design for modular steel trestles is also complex, requiring robust connections between modules while also facilitating assembly and disassembly. Node force analysis, stress distribution, and connector selection all pose design challenges. Furthermore, the modular design can affect the overall stability of the steel trestles, making it difficult to guarantee their overall stability under wind and seismic loads. Summary of the Invention
[0004] In order to solve the above problems, the present invention provides a high-strength prestressed tie rod connection node and installation method for the upper longitudinal beam of an assembled modular steel structure trestle, adopting the following technical solutions: A high-strength prestressed tie rod connection node for an upper longitudinal beam of an assembled modular steel structure trestle, comprising: A reinforcing plate, the reinforcing plate being arranged correspondingly on the connecting holes of the standard unit template and being fixedly connected to the standard unit template; A connecting piece is provided in the connecting holes of the two standard unit templates and cooperates with the connecting holes to connect the two standard unit templates.
[0005] Furthermore, the standard unit formwork includes an upper longitudinal beam, a corrugated steel plate and a blade stiffener; the upper longitudinal beam extends along the width direction of the corrugated steel plate and is fixedly connected to the first end face of the corrugated steel plate; one end of the blade stiffener extending along the length direction is fixedly connected to the upper longitudinal beam, and the other end extends along the length direction of the corrugated steel plate and is fixedly connected to the second end face of the corrugated steel plate; the first end face and the second end face are adjacent to each other; a plurality of connection holes are provided on the blade stiffener at one end close to the corrugated steel plate; the plurality of connection holes are arranged in sequence along the length direction of the corrugated steel plate.
[0006] Furthermore, the connecting hole close to the first end face of the corrugated steel plate is set as the first connecting hole, and the remaining connecting holes are set as the second connecting holes; the first connecting hole cooperates with the connecting piece, and the second connecting hole has an internal thread and cooperates with a bolt to connect the two blade stiffening ribs.
[0007] Furthermore, the connecting part includes a high-strength prestressed tendon rod and two sleeves; the high-strength prestressed tendon rod passes through the first connecting holes on the reinforcing plate and the two blade stiffening ribs in sequence to connect the two blade stiffening ribs; the two sleeves are respectively fixedly mounted on the two ends of the high-strength prestressed tendon rod to fix the high-strength prestressed tendon rod on the first connecting hole.
[0008] Furthermore, the width direction of the blade stiffening rib extends along an end of the corrugated steel plate away from the crest.
[0009] Furthermore, a method for installing a high-strength prestressed tie rod connection node of an upper longitudinal beam of an assembled modular steel structure trestle is a method for installing a high-strength prestressed tie rod connection node of an upper longitudinal beam of an assembled modular steel structure trestle as described in any of the above items, and the method comprises the following steps: S1. Position and weld the upper longitudinal beam, blade stiffener and corrugated steel plate, and weld the reinforcement plate at the corresponding position on the surface of the blade stiffener; S2. Splice the standard unit modules of the two trestles on site, align the first connection holes and the second connection holes on the two blade stiffeners, align the first connection holes on the two blade stiffeners close to the first end surface of the corrugated steel plate, and engage the remaining second connection holes with high-strength bolts to connect the two blade stiffeners; S3. After inserting the high-strength prestressed tendon rod into the first connection hole on the blade stiffening rib close to the first end face of the corrugated steel plate, install sleeves at both ends of the high-strength prestressed tendon rod at the same time, screw the sleeves into the high-strength prestressed tendon rod to complete the installation. Beneficial effects
[0010] (1) The present invention provides a high-strength prestressed tie rod connection node for the upper longitudinal beam of an assembled modular steel structure trestle, which uses high-strength prestressed tie rods instead of high-strength bolts. The two ends of the high-strength prestressed tie rods are connected to sleeves, thereby achieving equal strength connection of the continuous steel trestle; (2) The modular design concept is adopted to divide the trestle into multiple standard unit modules. These modules are assembled through bolts and other connectors to form a complete trestle structure, so that the trestle can be quickly customized and assembled according to actual needs. After the modules are processed in the factory, they only need to be hoisted on site, avoiding the misalignment of the bolt holes in the high-strength prestressed tie rod connection nodes of the upper longitudinal beam during on-site installation. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a schematic diagram of the overall structure of the connection between the high-strength prestressed tie rod connection node of the upper longitudinal beam and the standard unit formwork of the assembled modular steel structure trestle in Example 1 of the present invention; Figure 2 This is a schematic diagram of the upper longitudinal beam structure of the standard unit template in Example 1 of the present invention; Figure 3 This is a schematic structural diagram of step S1 of embodiment 2 of the present invention; Figure 4 This is a schematic structural diagram of step S2 of embodiment 2 of the present invention; Figure 5 This is a schematic diagram of the structure of step S3 of Example 2 of the present invention; Figure 6 This is a schematic diagram of the overall structure of the connection between the high-strength prestressed tie rod connection node of the upper longitudinal beam and the standard unit formwork in Example 3 of the present invention; Figure 7 Schematic diagram of the upper longitudinal beam structure of the standard unit template in Example 3 of the present invention; Among them, 1. Upper longitudinal beam; 2. Corrugated steel plate; 3. Blade stiffener; 4. Reinforcement plate; 5. High-strength prestressed tendon tie rod; 6. Sleeve; 7. Bolt. DETAILED DESCRIPTION
[0012] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below.
[0013] Example 1
[0014] Reference Figures 1 to 2 , a high-strength prestressed tie rod connection node for an upper longitudinal beam of an assembled modular steel structure trestle, comprising: Reinforcement plate 4, which is correspondingly arranged on the connection holes of the standard unit template and fixedly connected to the standard unit template; The connecting piece is arranged in the connecting holes of the two standard unit templates and cooperates with the connecting holes to connect the two standard unit templates.
[0015] In this embodiment, the standard unit formwork includes an upper longitudinal beam 1, a corrugated steel plate 2 and a blade stiffener 3; the upper longitudinal beam 1 extends along the width direction of the corrugated steel plate 2 and is fixedly connected to the first end face of the corrugated steel plate 2; one end of the blade stiffener 3 extending along the length direction is fixedly connected to the upper longitudinal beam 1, and the other end extends along the length direction of the corrugated steel plate 2 and is fixedly connected to the second end face of the corrugated steel plate 2; the first end face and the second end face are adjacent to each other; a plurality of connection holes are provided on the end of the blade stiffener 3 close to the corrugated steel plate 2; the plurality of connection holes are arranged in sequence along the length direction of the corrugated steel plate 2.
[0016] The upper longitudinal beam 1 is a steel section such as a rectangular steel tube, an H-shaped steel, or an angle steel. Preferably, the upper longitudinal beam 1 is an angle steel.
[0017] In this embodiment, the connection hole close to the first end surface of the corrugated steel plate 2 is set as the first connection hole, and the remaining connection holes are set as the second connection holes; the first connection hole cooperates with the connecting piece, and the second connection hole has an internal thread and cooperates with the bolt 7 to connect the two blade stiffening ribs 3.
[0018] In this embodiment, the connecting part includes a high-strength prestressed tendon rod 5 and two sleeves 6; the high-strength prestressed tendon rod 5 passes through the first connecting holes on the reinforcing plate 4 and the two blade stiffening ribs 3 in turn to connect the two blade stiffening ribs 3; the two sleeves 6 are respectively fixedly mounted on the two ends of the high-strength prestressed tendon rod 5 to fix the high-strength prestressed tendon rod 5 on the first connecting hole.
[0019] In this embodiment, the width direction of the blade stiffening rib 3 extends along the end of the corrugated steel plate 2 away from the wave crest.
[0020] Example 2
[0021] Reference Figures 3 to 5 A method for installing a high-strength prestressed tie rod connection node on the upper longitudinal beam 1 of an assembled modular steel structure trestle is provided in Example 1. The method comprises the following steps: S1. Position and weld the upper longitudinal beam 1, blade stiffener 3 and corrugated steel plate 2, and weld the reinforcement plate at the corresponding position on the surface of the blade stiffener 3; S2. Splice the standard unit modules of the two trestles on site, align the first connection holes and the second connection holes on the two blade stiffeners 3, align the second connection holes on the two blade stiffeners 3 close to the first end surface of the corrugated steel plate 2, and engage the remaining second connection holes with high-strength bolts 7 to connect the two blade stiffeners 3; S3. After inserting the high-strength prestressed tendon rod 5 into the first connecting hole on the blade stiffening rib 3 close to the first end face of the corrugated steel plate 2, install the sleeve 6 at both ends of the high-strength prestressed tendon rod 5 at the same time, screw the sleeve 6 into the high-strength prestressed tendon rod 5, and complete the installation.
[0022] Example 3
[0023] The difference between this embodiment and embodiment 1 is that the upper longitudinal beam 1 of the standard unit formwork is an H-shaped steel.
[0024] like Figures 6 and 7 As shown, the H-shaped steel and the corrugated steel plate 2 are perpendicular to each other, and the outer end face of a transverse part of the H-shaped steel is fixedly connected to the corrugated steel plate 2, and the two I-shaped end faces of the H-shaped steel are arranged along the width direction of the corrugated steel plate 2, wherein the first I-shaped end face is fixedly connected to the blade stiffening rib 3, and the upper opening of the first I-shaped end face is provided with a reinforcing plate, which is fixedly connected to the blade stiffening rib 3 located in the upper opening of the first I-shaped end face, so that the high-strength prestressed tendon pull rod 5 is connected in sequence to the reinforcing plate, the two blade stiffening ribs 3, the reinforcing plate, and the second I-shaped end face is flush with the end of the corrugated steel plate 2.
[0025] The present invention provides a prefabricated modular steel structure trestle with an upper longitudinal beam high-strength prestressed tie rod connection node, which optimizes the upper longitudinal beam connection node into a high-strength prestressed tendon tie rod connection node, adopts high-strength prestressed threaded steel bars, and is threaded on both sides and connected by bolts, thereby achieving equal strength connection of the continuous steel trestle; the modular connection steel trestle adopts a modular design concept, dividing the trestle into multiple standard unit modules, and these modules are assembled through bolts and other connectors to form a complete trestle structure. This design method greatly improves the flexibility and scalability of the trestle, allowing the trestle to be quickly customized and assembled according to actual needs; the modular connection steel trestle is simplified in structure, reducing unnecessary supports and connectors, making the overall structure more concise and lightweight. This simplification not only reduces material costs, but also improves construction efficiency.
[0026] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.
Claims
1. A high-strength prestressed tie rod connection node for the upper longitudinal beam of an assembled modular steel structure trestle, characterized in that: include: A reinforcing plate, the reinforcing plate being arranged correspondingly on the connecting holes of the standard unit template and being fixedly connected to the standard unit template; A connecting piece is provided in the connecting holes of the two standard unit templates and cooperates with the connecting holes to connect the two standard unit templates.
2. The high-strength prestressed tie rod connection node of the upper longitudinal beam of the assembled modular steel structure trestle according to claim 1 is characterized in that: The standard unit formwork includes an upper longitudinal beam, a corrugated steel plate and a blade stiffener; the upper longitudinal beam extends along the width direction of the corrugated steel plate and is fixedly connected to the first end face of the corrugated steel plate; one end of the blade stiffener extending along the length direction is fixedly connected to the upper longitudinal beam, and the other end extends along the length direction of the corrugated steel plate and is fixedly connected to the second end face of the corrugated steel plate; the first end face and the second end face are adjacent to each other; a plurality of connection holes are provided on the blade stiffener at one end close to the corrugated steel plate; the plurality of connection holes are arranged in sequence at intervals along the length direction of the corrugated steel plate.
3. The high-strength prestressed tie rod connection node of the upper longitudinal beam of the assembled modular steel structure trestle according to claim 2 is characterized in that: The connecting hole close to the first end face of the corrugated steel plate is set as the first connecting hole, and the remaining connecting holes are set as the second connecting holes; the first connecting hole cooperates with the connecting piece, and the second connecting hole has an internal thread and cooperates with a bolt to connect the two blade stiffening ribs.
4. The high-strength prestressed tie rod connection node of the upper longitudinal beam of the assembled modular steel structure trestle according to claim 3 is characterized in that: The connecting part includes a high-strength prestressed tendon rod and two sleeves; the high-strength prestressed tendon rod passes through the first connecting holes on the reinforcing plate and the two blade stiffening ribs in sequence to connect the two blade stiffening ribs; the two sleeves are respectively fixedly mounted on the two ends of the high-strength prestressed tendon rod to fix the high-strength prestressed tendon rod on the first connecting hole.
5. The high-strength prestressed tie rod connection node of the upper longitudinal beam of the assembled modular steel structure trestle according to claim 2 is characterized in that: The width direction of the blade stiffening rib extends along an end of the corrugated steel plate away from the wave crest.
6. A method for installing high-strength prestressed tie rod connection nodes on the upper longitudinal beam of an assembled modular steel structure trestle, characterized in that: A method for installing a high-strength prestressed tie rod connection node of an upper longitudinal beam of an assembled modular steel structure trestle according to any one of claims 1 to 5, the method comprising the following steps: S1. Position and weld the upper longitudinal beam, blade stiffener and corrugated steel plate, and weld the reinforcement plate at the corresponding position on the surface of the blade stiffener; S2. Splice the standard unit modules of the two trestles on site, align the first connection holes and the second connection holes on the two blade stiffeners, align the first connection holes on the two blade stiffeners close to the first end surface of the corrugated steel plate, and engage the remaining second connection holes with high-strength bolts to connect the two blade stiffeners; S3. After inserting the high-strength prestressed tendon rod into the first connection hole on the blade stiffening rib close to the first end face of the corrugated steel plate, install sleeves at both ends of the high-strength prestressed tendon rod at the same time, screw the sleeves into the high-strength prestressed tendon rod to complete the installation.