Modular prefabricated steel bridge rapid assembly structure

Abstract

The utility model discloses a kind of modular prefabricated steel bridge quick assembly structure, including at least two groups of prefabricated module, the prefabricated module includes vertically arranged first pier module and second pier module, two groups of adjacent prefabricated module are coupled connection through axial mortise and tenon structure and radial hydraulic locking device, the axial mortise and tenon structure includes the tenon structure on the end face of first pier module and the trapezoidal recess corresponding with the tenon structure on the end face of second pier module is arranged, the radial hydraulic locking device includes annular hydraulic cavity being arranged in the inside of second pier module and wedge-shaped lock bolt being driven by hydraulic pressure. The utility model is positioned locking by mortise and tenon structure and hydraulic locking device, and quickly and efficiently complete field assembly, positioning accuracy is high, promote field construction speed, improve service life.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and in particular to a modular prefabricated steel bridge rapid assembly structure. Background Technology

[0002] Steel structures are load-bearing and load-transferring structural forms made of materials such as steel sections, plates, and pipes, connected by cold bending, bolting, welding, and hot rolling. They have become one of the major modern building structure types, possessing advantages such as light weight, high strength, simple construction, large span, and excellent seismic and impact resistance. Bridge steel structures are a subcategory of steel structures and are widely used in bridge construction projects, serving as the main load-bearing and stress-bearing component of the bridge superstructure.

[0003] Currently, the scaffolding used in steel bridge construction generally employs either integral or modular scaffolding. Integral scaffolding offers good overall structural stability; however, its large cross-sectional dimensions occupy significant space, making storage and transportation difficult. Modular scaffolding comes in two types: one uses traditional welding, directly welding the components together; the other uses bolts to connect the components. Traditional bolted connections require high-altitude work, resulting in low construction efficiency and a risk of loosening, while welding connections require specialized equipment and have a long on-site construction period. Utility Model Content

[0004] To address the aforementioned technical problems, a modular prefabricated steel bridge rapid assembly structure is provided.

[0005] To achieve the above objectives, this utility model discloses a modular prefabricated steel bridge rapid assembly structure, comprising at least two sets of prefabricated modules. Each prefabricated module includes a vertically arranged first pier module and a second pier module. Adjacent sets of prefabricated modules are coupled and connected by an axial tenon and tenon structure and a radial hydraulic locking device. The axial tenon and tenon structure includes a tenon structure on the end face of the first pier module and a trapezoidal groove on the end face of the second pier module corresponding to the tenon structure. The radial hydraulic locking device includes an annular hydraulic cavity disposed inside the second pier module and a wedge-shaped locking tongue driven by hydraulic pressure.

[0006] Furthermore, the first pier module has a rounded corner boss on the inner side of the axial tenon structure, a positioning guide rod is provided at the center of the rounded corner boss, a locking block is provided at the bottom of the positioning guide rod, and a cross-shaped interlock is provided around the positioning guide rod on the rounded corner boss.

[0007] Furthermore, the locking block has a locking surface on its side that corresponds to the wedge-shaped locking tongue, and the locking surface has a serrated texture.

[0008] Furthermore, the second pier module has a groove corresponding to the rounded corner boss on the inner side of the axial tenon structure. The center of the groove has a positioning groove corresponding to the positioning guide rod and the locking block. The surface of the groove has a cross-shaped interlocking groove corresponding to the cross-shaped interlocking groove around the positioning groove.

[0009] Furthermore, the surface of the contact position between the tenon structure and the trapezoidal groove in the axial tenon structure is coated with a polytetrafluoroethylene wear-resistant layer.

[0010] Furthermore, the annular hydraulic chamber is injected with expansion fluid through an injection port located on the side of the second pier module. The expansion fluid is a mixture of water-soluble polyurethane and nano-silica, with an expansion rate ≥120%.

[0011] Furthermore, the first pier module and the second pier module are provided with a through grouting channel in the vertical direction, and a sealing ring structure is installed at the connection.

[0012] Furthermore, a gravity sensor that is linked to the radial hydraulic locking device is installed at the connection position of the first pier module and the second pier module.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model discloses a modular prefabricated steel bridge rapid assembly structure, which realizes the positioning and locking of the prefabricated steel bridge modules through mortise and tenon structure and hydraulic locking device, so as to complete the on-site assembly quickly and efficiently, with high positioning accuracy, improve the on-site construction speed, and extend the service life. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the exploded structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the first pier module of this utility model.

[0017] Figure 3 This is a schematic diagram of the second pier module of this utility model.

[0018] Figure 4 This is a schematic diagram of the radial hydraulic locking device of this utility model.

[0019] In the diagram: 1 is the first pier module; 11 is the rounded corner boss; 12 is the positioning guide rod; 13 is the cross-shaped interlock; 14 is the locking block; 141 is the locking surface; 2 is the second pier module; 21 is the groove; 22 is the positioning groove; 23 is the cross-shaped interlock groove; 24 is the injection port; 3 is the axial tenon structure; 31 is the tenon structure; 32 is the trapezoidal groove; 4 is the radial hydraulic locking device; 41 is the annular hydraulic cavity; 42 is the wedge-shaped locking tongue; 5 is the grouting channel; 6 is the gravity sensor. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] One embodiment of this utility model is as follows: Figure 1 and Figure 4 As shown, taking two sets of prefabricated modules as an example, the prefabricated modules include a first pier module 1 and a second pier module 2 set vertically. The two sets of prefabricated modules are coupled and connected by an axial tenon and tenon structure 3 and a radial hydraulic locking device 4. The axial tenon and tenon structure 3 includes a tenon structure 31 on the end face of the first pier module 1 and a trapezoidal groove 32 on the end face of the second pier module 2 corresponding to the tenon structure 31. Specifically, the inclination angle of the axial tenon and tenon structure is 105°±2°. In this embodiment, the inclination angle is 105°. The radial hydraulic locking device 4 includes an annular hydraulic cavity 41 set inside the second pier module 2 and a wedge-shaped locking tongue 42 driven by hydraulic pressure. If there are more than two sets of prefabricated modules that make up the pier structure, the upper surface of the prefabricated module located in the center is the same as the surface structure of the second pier module, and the lower surface is the same as the surface structure of the first pier module. The steel bridge prefabricated modules are positioned and locked by the tenon and tenon structure and the hydraulic locking device, which can quickly and efficiently complete the on-site assembly, with high positioning accuracy, improve the on-site construction speed, and extend the service life.

[0022] like Figure 2 As shown, the first pier module 1 has a rounded corner boss 11 on the inner side of the axial tenon structure 3. A positioning guide rod 12 is set at the center of the rounded corner boss 11. A locking block 14 is set at the bottom of the positioning guide rod 12. A cross-shaped interlocking 13 is set around the positioning guide rod 12 on the rounded corner boss 11.

[0023] The locking block 14 has a locking surface 141 on its side that corresponds to the wedge-shaped locking tongue 42. The wedge-shaped locking tongue is made of 42CrMo alloy steel. In this embodiment, the wedge-shaped locking tongue is symmetrically arranged on both sides of the locking surface. The locking surface 141 is provided with a serrated texture to improve the connection stability.

[0024] like Figure 3 As shown, the second pier module 2 has a groove 21 corresponding to the rounded corner boss 11 on the inner side of the axial tenon structure 3. The center of the groove 21 has a positioning groove 22 corresponding to the positioning guide rod 12 and the locking block 14. The surface of the groove 21 has a cross-shaped interlocking groove 23 corresponding to the cross-shaped interlocking 13 around the positioning groove 22, which ensures the positioning accuracy of the two sets of prefabricated modules.

[0025] The surface of the contact position between the tenon structure 31 and the trapezoidal groove 32 of the axial tenon structure 3 is coated with a polytetrafluoroethylene wear-resistant layer to improve wear resistance and extend service life.

[0026] like Figure 4 As shown, the annular hydraulic chamber 41 is injected with expansion fluid through the injection port 24 located on the side of the second pier module 2. The expansion fluid is a mixture of water-soluble polyurethane and nano-silica with an expansion rate of ≥120%. The annular hydraulic chamber and the wedge-shaped locking tongue use hydraulic pressure based on Pascal's principle to squeeze the piston at the end of the wedge-shaped locking tongue and extend it to abut against the locking surface.

[0027] The first pier module 1 and the second pier module 2 have a through grouting channel 5 in the vertical direction. A sealing ring structure is installed at the connection. After the positioning and installation are completed, the connection stability is further improved by grouting and solidification.

[0028] A gravity sensor 6, which is linked to the radial hydraulic locking device 4, is installed at the connection position of the first pier module 1 and the second pier module 2. Let the maximum straight length of the connection surface between the first pier module and the second pier module be L. When the deflection exceeds L / 1500, the gravity sensor sends a signal to control the radial hydraulic locking device to automatically compensate for the pressure.

[0029] The working principle of this embodiment is as follows: the positioning is guided by the hoisting system, the positioning guide rod is lowered into the positioning groove, and the first pier module slides into the trapezoidal groove of the second pier module by its own weight during the descent, realizing the self-weight closure. The cross-locking completes the limit. After the initial positioning is completed, the expansion liquid is injected from the injection port to keep the pressure at 30MPa for 10 minutes. After completion, non-shrink epoxy mortar is injected into the grouting channel.

[0030] Several points need to be clarified: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships, and the relative positional relationships may change when the absolute position of the described objects changes. Second, in this document, relational terms such as "first" and "second" are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities.

[0031] The above examples are merely illustrative of this utility model and do not constitute a limitation on the scope of protection of this utility model. All designs that are the same as or similar to this utility model are within the scope of protection of this utility model.

Claims

1. A modular prefabricated steel bridge rapid assembly structure, comprising at least two sets of prefabricated modules, characterized in that, The prefabricated module includes a first pier module (1) and a second pier module (2) set vertically. The two adjacent prefabricated modules are coupled and connected by an axial tenon structure (3) and a radial hydraulic locking device (4). The axial tenon structure (3) includes a tenon structure (31) on the end face of the first pier module (1) and a trapezoidal groove (32) on the end face of the second pier module (2) corresponding to the tenon structure (31). The radial hydraulic locking device (4) includes an annular hydraulic cavity (41) set inside the second pier module (2) and a wedge-shaped locking tongue (42) driven by hydraulic pressure.

2. A modular prefabricated steel bridge rapid assembly structure according to claim 1, characterized in that, The first pier module (1) has a rounded corner boss (11) inside the axial tenon structure (3), a positioning guide rod (12) is provided at the center of the rounded corner boss (11), a locking block (14) is provided at the bottom of the positioning guide rod (12), and a cross buckle (13) is provided around the positioning guide rod (12) on the rounded corner boss (11).

3. A modular prefabricated steel bridge rapid assembly structure according to claim 2, characterized in that, The locking block (14) has a locking surface (141) on its side that corresponds to the wedge-shaped locking tongue (42), and the locking surface (141) has a serrated texture.

4. A modular prefabricated steel bridge rapid assembly structure according to claim 1, characterized in that, The second pier module (2) has a groove (21) corresponding to the rounded corner boss (11) on the inner side of the axial tenon structure (3). The center of the groove (21) is provided with a positioning groove (22) corresponding to the positioning guide rod (12) and the locking block (14). The surface of the groove (21) is provided with a cross-shaped interlocking groove (23) corresponding to the cross-shaped interlocking (13) around the positioning groove (22).

5. A modular prefabricated steel bridge rapid assembly structure according to claim 1, characterized in that, The surface of the contact position between the tenon structure (31) and the trapezoidal groove (32) of the axial tenon structure (3) is coated with a polytetrafluoroethylene wear-resistant layer.

6. A modular prefabricated steel bridge rapid assembly structure according to claim 1, characterized in that, The annular hydraulic chamber (41) is injected with expansion fluid through the injection port (24) located on the side of the second pier module (2). The expansion fluid is a mixture of water-soluble polyurethane and nano-silica with an expansion rate ≥120%.

7. A modular prefabricated steel bridge rapid assembly structure according to claim 1, characterized in that, The first pier module (1) and the second pier module (2) are provided with a through grouting channel (5) in the vertical direction, and a sealing ring structure is installed at the connection.

8. A modular prefabricated steel bridge rapid assembly structure according to claim 1, characterized in that, A gravity sensor (6) that is linked to the radial hydraulic locking device (4) is installed at the connection position of the first pier module (1) and the second pier module (2).

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