Modular quick-assembly assembly type bridge structure

Abstract

The utility model relates to the technical field of assembly type bridge, disclose a kind of modularization quick assembly assembly type bridge structure, including several bridge deck sections, the bottom surface of several bridge deck sections is fixed with pier, and the both sides of bridge deck section are provided with the pre-positioning structure for the pre-positioning of bridge.The utility model is positioned by the setting of pre-positioning structure, first hoist fixed first bridge deck section, and the locking strip of locking shaft is distributed up and down by inserting external insertion rod swing adjustment disc, hoist the next bridge deck section subsequently, make locking shaft insert locking groove, realize preliminary positioning, continue to operate adjustment disc reset by external insertion rod, make the occlusal strip be distributed left and right, and be dislocated occlusion with locking strip, enhance friction and shear area, complete pre-positioning, finally through concrete grouting fixed bridge deck section, subsequent bridge deck section can be installed according to the above steps, to improve installation accuracy, ensure bridge overall stability and security.

Description

Technical Field

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

[0002] Prefabricated bridge structures are a construction method in which the main components of a bridge, such as piers, cap beams, and box girders, are prefabricated in a factory and then transported to the construction site for assembly. This method features standardized design, modular products, factory production, mechanized assembly, and refined management, which can significantly improve construction efficiency, reduce on-site operation time, and reduce environmental impact. It meets the requirements of modern bridge construction for speed, efficiency, and environmental protection. In recent years, with the country's emphasis on infrastructure construction, prefabricated bridges have been widely used in highways, urban interchanges, and other projects.

[0003] An existing prefabricated bridge structure (publication number: CN212561094U) has at least the following drawbacks: Although the above-mentioned bridge structure achieves the assembly of the bridge structure by connecting the main spans and then inserting the anchor bolts, the prefabricated bridge structure lacks effective pre-positioning measures at the module connection points. As a result, the alignment accuracy between components during installation depends on on-site operations, which can easily lead to installation errors and affect the stability and safety of the overall structure. Therefore, we propose this utility model. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a modular, rapid-assembly prefabricated bridge structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A modular, rapid-assembly prefabricated bridge structure includes several bridge deck segments. Each bridge deck segment has a pier fixed to its bottom surface. Pre-positioning structures for pre-positioning the bridge are provided on both sides of each bridge deck segment. Each pre-positioning structure includes two mounting slots at the tail end of the bridge deck segment, with locking shafts rotatably mounted inside the mounting slots. Two locking slots are provided at the head end of each bridge deck segment, corresponding to the positions of two locking shafts. Several interlocking strips are fixed to the outer circular wall of the locking shafts. An installation cylinder is fixed inside the locking slot. The locking shafts are rotatably mounted inside the installation cylinders of adjacent bridge deck segments, and several locking strips are fixed to the inner circular wall of the installation cylinders.

[0006] As a further embodiment of this utility model, the interlocking strip is slidably arranged between the interlocking strip and the two adjacent locking strips. Two fixing grooves are opened on the top surface of the bridge deck section. The two fixing grooves are respectively connected to two mounting grooves. An adjusting plate is rotatably arranged inside the fixing groove. Several insertion holes are opened on the outer circular wall of the adjusting plate. The locking shaft is fixed to one side of the adjusting plate.

[0007] As a further embodiment of this utility model, two grouting grooves are opened at the beginning of several bridge deck sections, and two sets of pre-embedded steel bars are fixed inside several bridge deck sections. The two sets of pre-embedded steel bars are slidably inserted into the two grouting grooves at the beginning of adjacent bridge deck sections.

[0008] As a further embodiment of this utility model, a support base is provided at the bottom of the bridge pier.

[0009] As a further embodiment of this utility model, the top surface of the support base is provided with a pre-set groove, the bottom end of the bridge pier is slidably inserted into the interior of the pre-set groove, and an installation gap is reserved between the pre-set groove and the bridge pier.

[0010] As a further embodiment of this utility model, a plug is fixed at the bottom end of the support base.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The bridge structure utilizes a pre-positioning mechanism. Workers first hoist and fix the first bridge deck segment, inserting an external rod to swing the adjusting disc, causing the locking bars of the locking shaft to be vertically distributed. Then, the next bridge deck segment is hoisted, and the locking shaft is inserted into the locking groove for initial positioning. The adjusting disc is then reset using the external rod, causing the interlocking bars to be horizontally distributed and staggered with the locking bars, increasing friction and shear resistance, thus completing the pre-positioning. Finally, the bridge deck segment is fixed by concrete pouring. Subsequent bridge deck segments can be installed following the same steps, thereby improving installation accuracy and ensuring the overall stability and safety of the bridge. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a modular, rapid-assembly prefabricated bridge structure proposed in this utility model. Figure 2 This is a schematic diagram of the disassembled structure of a modular, rapid-assembly prefabricated bridge structure proposed in this utility model; Figure 3 This is a schematic diagram of the disassembled structure of the bridge deck section of a modular, rapid-assembly prefabricated bridge structure proposed in this utility model. Figure 4 This is a schematic diagram of the disassembled structure at the locking shaft of a modular, rapid-assembly prefabricated bridge structure proposed in this utility model.

[0013] In the diagram: 1. Bridge deck section; 2. Pier; 201. Mounting groove; 202. Locking shaft; 203. Locking groove; 204. Engaging strip; 205. Mounting cylinder; 206. Locking strip; 207. Fixing groove; 208. Adjusting disc; 209. Insertion hole; 3. Grouting groove; 301. Embedded steel bar; 4. Support base; 5. Pre-set groove; 6. Insert block. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0015] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] Reference Figures 1-4 A modular, rapidly assembled prefabricated bridge structure includes several bridge deck sections 1. Each bridge deck section 1 has a pier 2 fixed to its bottom surface. Pre-positioning structures for pre-positioning the bridge are provided on both sides of each bridge deck section 1. Each pre-positioning structure includes two mounting grooves 201 at the tail end of each bridge deck section 1. A locking shaft 202 is rotatably mounted inside each mounting groove 201. Two locking grooves 203 are provided at the head end of each bridge deck section 1, corresponding to the positions of the two locking shafts 202. Several interlocking strips 204 are fixed to the outer circular wall of the locking shaft 202. An installation cylinder 205 is fixed inside the locking groove 203. The locking shaft 202 is rotatably mounted inside the installation cylinder 205 of the adjacent bridge deck section 1. Several locking strips 206 are fixed to the inner circular wall of the installation cylinder 205.

[0018] In this embodiment, the interlocking strip 204 is slidably disposed between itself and two adjacent locking strips 206. Two fixing grooves 207 are formed on the top surface of the bridge deck section 1, and these two fixing grooves 207 are respectively connected to two mounting grooves 201. An adjusting disc 208 is rotatably disposed inside the fixing groove 207. Several insertion holes 209 are formed on the outer circular wall of the adjusting disc 208. The locking shaft 202 is fixed to one side of the adjusting disc 208. Through the pre-positioning structure, the operator first fixes the first bridge deck section 1 to the installation position by hoisting. Then, by inserting an external rod into the insertion holes 209 on the outer circular wall of the adjusting disc 208, the external rod is swung to rotate the adjusting disc 208, causing the two rows of locking strips 206 of the locking shaft 202 to be distributed vertically. Next, the next bridge deck section 1 is moved by hoisting. At the tail end of the first bridge deck section 1, the locking shaft 202 is inserted into the corresponding locking groove 203 to achieve the initial positioning of the two bridge deck sections 1. Then, through the cooperation of the external insertion rod and the insertion hole 209, the adjusting plate 208 is driven to reset, so that the two rows of interlocking strips 204 of the locking shaft 202 are distributed left and right. During the reset rotation of the adjusting plate 208, the interlocking strips 204 slide into the space between two adjacent locking strips 206, forming a staggered interlocking, increasing the friction and shear area, thereby achieving the pre-positioning of the two bridge deck sections 1. Finally, the workers fix the two bridge deck sections 1 by conventional concrete pouring installation method. The subsequent installation of bridge deck sections 1 can be repeated according to the above steps, effectively reducing the error in the bridge deck installation process and ensuring the overall stability and safety of the bridge structure.

[0019] In this embodiment, two grouting grooves 3 are opened at the beginning of several bridge deck sections 1, and two sets of pre-embedded steel bars 301 are fixed inside several bridge deck sections 1. The two sets of pre-embedded steel bars 301 are slidably inserted into the two grouting grooves 3 at the beginning of adjacent bridge deck sections 1. When two bridge deck sections 1 are hoisted and connected end to end, the pre-embedded steel bars 301 of each section are inserted into the corresponding grouting grooves 3. After the pre-positioning is completed, the workers can pour concrete into the grouting grooves 3 to further strengthen the connection strength between the two bridge deck sections 1.

[0020] In this embodiment, a support seat 4 is provided at the bottom of the pier 2. When installing the bridge deck section 1, the workers pre-install the support seat 4 at the installation position so that the support seat 4 supports the bridge deck section 1 through the pier 2.

[0021] In this embodiment, a pre-set groove 5 is provided on the top surface of the support base 4. The bottom end of the bridge pier 2 is slidably inserted into the interior of the pre-set groove 5. An installation gap is reserved between the pre-set groove 5 and the bridge pier 2. During the pre-positioning process of the second bridge deck section 1, the bottom end of the bridge pier 2 is inserted into the pre-set groove 5 to provide initial support for the bridge deck section 1. When the bridge deck section 1 is positioned, it needs to be translated so that the locking shaft 202 is inserted into the installation cylinder 205. The bottom end of the bridge pier 2 slides in the installation gap in the pre-set groove 5. After the positioning and installation are completed, the workers pour concrete into the installation gap to fix the support base 4 and the bridge pier 2 and ensure the support strength.

[0022] In this embodiment, a plug 6 is fixed at the bottom of the support base 4. When the support base 4 is pre-filled and installed, the plug 6 can enhance the connection strength between the support base 4 and the ground underground.

[0023] Working principle: In use, the operator first fixes the first bridge deck section 1 to the installation position by hoisting. Then, by inserting an external rod into the insertion hole 209 on the outer circular wall of the adjusting plate 208, the operator swings the external rod to rotate the adjusting plate 208, causing the two rows of locking strips 206 of the locking shaft 202 to be distributed vertically. Next, the operator hoists and moves the next bridge deck section 1 to the end of the first bridge deck section 1, so that the locking shaft 202 is inserted into the corresponding locking groove 203, achieving the initial positioning of the two bridge deck sections 1. Continuing with the cooperation of the external insertion rod and the insertion hole 209, the adjusting plate 208 is reset, causing the two rows of engaging strips 204 of the locking shaft 202 to be distributed left and right. During the reset rotation of the adjusting plate 208, the engaging strips 204 slide into the space between two adjacent locking strips 206, forming a staggered engagement, increasing friction and shear area, thereby achieving the pre-positioning of the two bridge deck sections 1. Finally, the workers fix the two bridge deck sections 1 using conventional concrete pouring installation methods, and the subsequent installation of bridge deck sections 1... The above steps can be repeated. When the two bridge deck sections 1 are hoisted end to end, the pre-embedded steel bars 301 of each section are inserted into the corresponding grouting grooves 3. After the pre-positioning is completed, the workers can pour concrete into the grouting grooves 3 to further strengthen the connection strength between the two bridge deck sections 1. When installing the bridge deck section 1, the workers pre-install the support seat 4 at the installation position so that the support seat 4 supports the bridge deck section 1 through the pier 2. During the pre-positioning process of the second bridge deck section 1, the bottom end of the pier 2 is inserted into the pre-set groove 5 so that the support seat 4 provides initial support for the bridge deck section 1. When positioning the bridge deck section 1, it is necessary to complete the translation so that the locking shaft 202 is inserted into the installation cylinder 205. The bottom end of the pier 2 slides in the installation gap in the pre-set groove 5. After the positioning and installation are completed, the workers pour concrete into the installation gap to fix the support seat 4 and the pier 2 to ensure the support strength. When the support seat 4 is pre-poured and installed, the insert block 6 underground can enhance the connection strength between the support seat 4 and the ground.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A modular, rapidly assembled prefabricated bridge structure, comprising several bridge deck segments (1), characterized in that: Several bridge deck sections (1) are fixed with piers (2) on their bottom surfaces. Pre-positioning structures for pre-positioning the bridge are provided on both sides of the bridge deck section (1). The pre-positioning structures include two mounting grooves (201) opened at the tail end of the bridge deck section (1). A locking shaft (202) is rotatably installed inside the mounting groove (201). Two locking grooves (203) are opened at the head end of the bridge deck section (1). The two locking grooves (203) correspond to the positions of the two locking shafts (202) respectively. Several interlocking strips (204) are fixed on the outer circular wall of the locking shaft (202). An installation cylinder (205) is fixed inside the locking groove (203). The locking shaft (202) is rotatably installed inside the installation cylinder (205) of the adjacent bridge deck section (1). Several locking strips (206) are fixed on the inner circular wall of the installation cylinder (205).

2. The modular, rapid-assembly prefabricated bridge structure according to claim 1, characterized in that, The interlocking strip (204) is slidably disposed between the two adjacent locking strips (206). Two fixing grooves (207) are opened on the top surface of the bridge deck section (1). The two fixing grooves (207) are respectively connected to two mounting grooves (201). An adjusting plate (208) is rotatably disposed inside the fixing groove (207). Several insertion holes (209) are opened on the outer circular wall of the adjusting plate (208). The locking shaft (202) is fixed to one side of the adjusting plate (208).

3. The modular, rapid-assembly prefabricated bridge structure according to claim 2, characterized in that, Two grouting grooves (3) are opened at the beginning of several bridge deck sections (1), and two sets of pre-embedded steel bars (301) are fixed inside several bridge deck sections (1). The two sets of pre-embedded steel bars (301) are slidably inserted into the two grouting grooves (3) at the beginning of the adjacent bridge deck sections (1).

4. The modular, rapid-assembly prefabricated bridge structure according to claim 3, characterized in that, The bottom end of the pier (2) is provided with a support seat (4).

5. A modular, rapid-assembly prefabricated bridge structure according to claim 4, characterized in that, The top surface of the support base (4) is provided with a pre-set groove (5), and the bottom end of the pier (2) is slidably inserted into the interior of the pre-set groove (5). An installation gap is reserved between the pre-set groove (5) and the pier (2).

6. A modular, rapid-assembly prefabricated bridge structure according to claim 5, characterized in that, The bottom end of the support base (4) is fixed with a plug (6).

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