Fabricated bridge and mounting method thereof

Abstract

The invention provides a fabricated bridge and a mounting method thereof, the fabricated bridge comprises a beam column, a cover beam and an inserting structure, the cover beam is pressed against the top end of the beam column through the inserting structure, the inserting structure comprises an inserting head part formed at the top end of the beam column and an inserting groove part formed on the cover beam, and the inserting groove part is matched with the inserting head part; the plug part comprises a plug head and a plurality of plug rods arranged around the periphery of the plug head, the slot part comprises a block body and sleeves, a cavity is formed in the block body, and the sleeves are formed on the block body around the cavity; the fabricated bridge further comprises a magnetic attraction alignment mechanism, the magnetic attraction alignment mechanism comprises a coil and a wireless radio frequency device, and the coil is pre-buried in the beam column and surrounds the inserting rod. The wireless radio frequency device is used for wirelessly charging the coil, and the coil forms a magnetic field after being electrified, so that the inserting rod and the sleeve generate magnetism and are automatically attracted. The fabricated bridge provided by the invention is simple in structure and convenient to mount, the mounting efficiency is effectively improved, and the safety of workers during operation is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and in particular to an assembled bridge and an installation method thereof. Background Art

[0002] During bridge construction, prefabricated piers and cap beams are typically connected using wet joints, grouting sleeves, metal bellows, socket-and-socket joints, and mortise-and-tenon / slot-and-slot joints. Wet joints involve pre-reinforced steel bars between the prefabricated pier and cap beam, and the wet joint is formed by pouring ultra-high-performance concrete (UHPC) or conventional concrete on-site. For example, longitudinal reinforcement extends from the pier's top, and vertical reinforcement is embedded in the corresponding position of the cap beam. UHPC is then injected through grouting holes to anchor the reinforcement. Grouting sleeves connect the longitudinal reinforcement of the prefabricated pier to the embedded reinforcement of the cap beam through embedded sleeves, and grout is injected to secure the connection. Metal bellows connections embed corrugated pipes at the interface between the pier and cap beam, filling the gap with grout to form a shear key structure. However, this approach requires strict control of construction tolerances, and its application in high-seismic zones still requires verification. Socket-and-socket connections embed a socket hole (with a diameter larger than the pier's outer diameter) in the cap beam at the pier's top, and the gap is filled with grout. For example, an annular shear key is installed outside the embedded section of the pier column, and a corrugated pipe is pre-installed in the socket of the cap beam, forming a single piece after grouting. Mortise and tenon / slot connection technology uses a prefabricated protrusion (tenon) at the top of the pier column and a corresponding groove in the cap beam. Through precise alignment, a shear-resistant structure is formed, supplemented by grouting or gluing.

[0003] The above-mentioned various types of prefabricated bridge connection methods generally have the following problems: (1) They are highly dependent on manual operation. From the positioning and installation of the connection parts to the final fixation, each step requires the construction workers to complete manually with their own experience and professional skills. For example, at the bridge construction site, workers need to accurately control the position of the connection parts between the prefabricated beams and the bridge piers, and rely solely on manual adjustment of the angle and position. This process is not only time-consuming, but also requires extremely high concentration from the workers. (2) There are great safety risks in the assembly process. Due to the heavy weight of the accessories, many bridge connection accessories weigh hundreds of kilograms or even tons. During the lifting and installation process, the construction workers need to work closely together. Once the operation is wrong, it may cause serious safety accidents. For example, during the lifting process, the rope suddenly breaks, the accessories slip, the lifting equipment fails, etc., and the construction workers are often the most vulnerable. In this case, there is an urgent need for a bridge structure that is simple to operate and easy to assemble, which can reduce the participation of workers during the installation process and ensure the personal safety of workers. Summary of the Invention

[0004] In view of the above, it is necessary for the present invention to provide a prefabricated bridge and an installation method thereof to improve installation efficiency and ensure the safety of workers during operation.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] An assembled bridge comprises a base, beams, a cap beam, and a plug-in structure. The base is buried in the ground, the beams are fixed upright on the base, and the cap beam is pressed against the top of the beams by the plug-in structure. The plug-in structure comprises a plug portion formed on the top of the beams and a slot portion formed on the bottom surface of the cap beam, and the slot portion and the plug portion are matched.

[0007] The plug portion includes a plug connector and a plurality of plug rods arranged around the outer periphery of the plug connector, the plug connector is formed on the top end surface of the beam column, one end of the plug rod extends out of the top end surface of the beam column, and the other end extends toward the lower end of the beam column;

[0008] The slot portion includes a block and a plurality of sleeves. The block is embedded or integrally formed in the cap beam. A cavity is opened on the block for the plug connector to be inserted. The plurality of sleeves are formed on the block around the cavity for the corresponding plug rods to be inserted.

[0009] The assembled bridge also includes a magnetic alignment mechanism, which includes a coil and a wireless radio frequency device. The coil is pre-buried in the beam and surrounds the plug-in rod.

[0010] The wireless radio frequency device is used to transmit radio waves and wirelessly charge the coil. When the coil is energized, a magnetic field is formed, which makes the plug rod and the sleeve magnetic and automatically adsorbed, thereby achieving automatic docking between the cap beam slot part and the plug part on the beam column.

[0011] Furthermore, the base is connected to the beam through a plug-in structure, a plug portion is formed at the top of the base, and a slot portion is formed at the bottom of the beam. The block of the slot portion is embedded or integrally formed at the bottom end of the beam, and the plug portion at the top of the base cooperates with the slot portion at the bottom end of the beam.

[0012] Furthermore, the prefabricated bridge also includes a positioning mechanism, which includes a laser emitter, a reflector and a sensor. The laser emitter is fixedly connected to the outer peripheral surface of the beam and column. There are two reflectors, which are respectively fixed on the base and the cap beam. Each reflector corresponds vertically to the laser emitter. There are two sensors, both connected to the laser emitter, and each sensor corresponds to each reflector. The sensors receive the laser reflected by the reflector and calculate the position deviation of the beam and column through the incident angle of the laser received by the sensor, so as to make corresponding adjustments so that the beam and column can be accurately docked with the plug part on the base and the slot part of the cap beam.

[0013] Furthermore, a bayonet structure is formed between the plug connector and the block, and the bayonet structure includes a bayonet installed laterally on the inner circumference of the chamber, and a groove arranged on the outer circumference of the plug connector, so that after the plug connector is inserted into the chamber of the slot part, one end of the bayonet extends into the groove to prevent the plug connector from withdrawing from the chamber.

[0014] Furthermore, the bayonet structure includes an elastic member, and the inner wall of the chamber is provided with a plurality of mounting grooves at equal intervals along a circular line. The elastic member is arranged in the mounting groove and presses against the bayonet, so that the bayonet can be extended and retracted relative to the mounting groove.

[0015] Furthermore, a fixing groove for accommodating the block is provided on the bottom surface of the cap beam, and a grouting channel is provided on the cap beam to communicate with the fixing groove, so that after the cap beam is connected to the beam column, slurry can be injected through the grouting channel to strengthen the connection rigidity.

[0016] Furthermore, the connecting rod and the sleeve are both made of magnetic steel.

[0017] In addition, the present invention also provides a method for installing the prefabricated bridge, comprising the following steps:

[0018] S1, pre-buried base in the ground;

[0019] S2, installing the prefabricated beam column on the base and fixing it; wherein the top of the beam column is formed with a plug portion, a coil is embedded in the beam column, and a laser emitter and sensor are installed on the beam column;

[0020] S3, installing the prefabricated cap beam on the beam column and fixing it; wherein, a reflective plate is installed on the bottom surface of the cap beam. The installation process includes the following steps:

[0021] 1) Use a crane to lift the cap beam above the beam column;

[0022] 2) Start the wireless radio frequency device and transmit radio waves to the coil. The coil conducts electricity and generates a magnetic field. Under the action of the magnetic field, the slot at the bottom of the cap beam and the plug at the top of the beam column are attracted to each other. Then observe the laser data received by the sensor and adjust the alignment accuracy of the slot at the bottom of the cap beam and the plug at the beam column.

[0023] 3) The crane lowers the cap beam until it is completely placed on top of the beam column;

[0024] S4, turn off the wireless radio, and remove the laser transmitter, reflector and sensor to complete the bridge installation.

[0025] Furthermore, in S1, a plug portion is installed at the top of the base, a slot portion is formed at the bottom end of the beam, and a reflector is installed on the base; S2 includes the following steps:

[0026] 1) Use a crane to lift the beam column to the top of the plug part of the base;

[0027] 2) Start the wireless radio frequency device to transmit radio waves to the coil. The coil generates a magnetic field through the action of the magnetic field, which automatically aligns the slot at the bottom of the beam with the plug on the base. Observe the sensor receiving laser data and adjust the vertical alignment accuracy of the beam with the plug.

[0028] 3) The crane lowers the beams and columns until they are completely placed on the base, and grouts the gaps at the joints to fix the beams and columns on the base.

[0029] After step 3) of S3, the method further includes grouting a gap between the cavity and the plug portion.

[0030] The beneficial effects of the present invention are:

[0031] 1. The design of a magnetic alignment mechanism allows the plug and socket to automatically attach to each other. Workers only need to remotely control the equipment, and the laser positioning mechanism completes the installation operation. This design greatly reduces the risk of workers working at high altitudes or in complex environments, providing a solid guarantee for worker safety. Furthermore, the automated attachment process significantly reduces manual operation steps, significantly improving installation efficiency and shortening installation time, effectively accelerating the project progress.

[0032] 2. The plug and slot parts adopt a socket connection, and after the connection, they are further combined with grouting and sealing. The socket connection provides preliminary positioning and support, while the grouting and sealing further enhances the integrity and stability of the connection parts by filling them with high-strength grouting materials, making the connection between bridge components more firm and reliable, and better able to withstand the influence of various complex stresses and environmental factors.

[0033] 3. The introduction of a "bayonet + elastic part" combination structure allows the bayonet to quickly embed into the corresponding groove under the elastic force of the elastic part when the bridge components are connected, achieving rapid positioning and locking. The connection process is more convenient and efficient, and the continuous force of the spring ensures that the connection parts are always in a tight fit, effectively improving the reliability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is the main view of the prefabricated bridge in this application;

[0035] Figure 2 This is the exploded structural diagram of the prefabricated bridge;

[0036] Figure 3 It is the front view of the plug part;

[0037] Figure 4 is a top view of the plug portion;

[0038] Figure 5 is a cross-sectional view of the magnetic attraction structure;

[0039] Figure 6 is a radial cross-sectional view of the slot portion;

[0040] Figure 7It is a bottom view of the slot portion;

[0041] Figure 8 is a schematic diagram of a square plug portion;

[0042] Figure 9 Schematic diagram of the square slot portion.

[0043] Description of reference numerals:

[0044] Base 1, beam 2, cap beam 3, plug-in structure 4, plug part 41, plug connector 411, groove 4111, plug rod 412, slot part 42, block 421, chamber 4211, sleeve 422, pin structure 43, pin 431, inclined surface 4311, elastic member 432, coil 51, wireless radio frequency device 52, laser emitter 61, reflector 62, sensor 63. DETAILED DESCRIPTION

[0045] The following describes the specific embodiments of the present application in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application and are not intended to limit the present application.

[0046] like Figure 1-Figure 7 As shown, an embodiment of the present invention provides an assembled bridge, including a base 1, beams 2, a cap beam 3, and a plug-in structure 4. The base 1 is pre-buried underground, the beams 2 are upright fixed on the base 1, and the cap beam 3 is pressed against the top of the beams 2 through the plug-in structure 4. The plug-in structure 4 includes a plug portion 41 formed at the top of the beam 2 and a slot portion 42 formed on the bottom surface of the cap beam 3, and the slot portion 42 cooperates with the plug portion 41.

[0047] The plug portion 41 includes a plug connector 411 and a plurality of plug rods 412 arranged around the outer periphery of the plug connector 411. The plug connector 411 is formed on the top surface of the beam 2. One end of the plug rod 412 extends from the top end surface of the beam 2, and the other end extends toward the lower end of the beam 2.

[0048] The slot portion 42 includes a block 421 and a plurality of sleeves 422. The block 421 is embedded or integrally formed in the cap beam 3. A cavity 4211 is formed on the block 421 for the plug connector 411 to be inserted into. A plurality of sleeves 422 are formed on the block 421 around the cavity 4211 for corresponding plug rods 412 to be inserted into.

[0049] The assembled bridge also includes a magnetic alignment mechanism, which includes a coil 51 and a wireless radio frequency device 52. The coil 51 is pre-buried in the beam 2 and surrounds the plug-in rod 412, that is, the coil 51 encloses all the plug-in rods 412 therein.

[0050] The wireless radio frequency device 52 is used to transmit radio waves to wirelessly charge the coil 51. When the coil 51 is energized, a magnetic field is formed, which makes the plug rod 412 and the sleeve 422 magnetic and automatically adsorbed, thereby realizing automatic docking between the slot part 42 on the cap beam 3 and the plug part 41 on the beam column 2.

[0051] Furthermore, the beam column 2 is uprightly fixed on the base 1 through the plug-in structure 4, a plug portion 41 is formed at the top of the base 1, and a slot portion 42 is formed at the bottom end of the beam column 2. The block 421 of the slot portion 42 is embedded or integrally formed at the bottom end of the beam column 2. The plug portion 41 formed at the top of the base 1 cooperates with the slot portion 42 formed at the bottom end of the beam column 2.

[0052] Specifically, a plug portion 41 formed at the top of the base 1 protrudes from the ground, and a slot portion 42 is embedded or integrally formed at the lower end of the beam 2. The plug portion 41 at the top of the base 1 cooperates with the slot portion 42 at the bottom end of the beam 2, so that the beam 2 is vertically fixed on the base 1. A coil 51 is installed in the middle section of the beam 2. The coil 51 is capable of receiving radio waves generated by the wireless radio frequency device 52, thereby conducting electricity to form a magnetic field. The plug rod 412 surrounded by the coil 51 will be affected by the magnetic force of the magnetic field, causing the sleeve 422 on the slot portion 42 at the lower end of the beam 2 to align and absorb with the plug rod 412 on the plug portion 41 on the base 1, and the beam 2 automatically fits into the corresponding socket on the base 1.

[0053] The connecting rod 412 and the sleeve 422 are both made of martensitic stainless steel or other high-strength and magnetic materials, such as ferritic stainless steel, HRB series stainless steel, and HPB300 steel bars.

[0054] Furthermore, a latch structure 43 is formed between the plug connector 411 and the block 421 to securely connect the plug connector 411 to the slot portion 42 in the insertion direction. The latch structure 43 includes a latch 431 mounted on the circumference of the chamber 4211 for transverse movement (i.e., perpendicular to the insertion direction), and a groove 4111 formed around the outer circumference of the plug connector 411. After the plug connector 411 is inserted into the chamber 4211 of the slot portion 42, one end of the latch 431 extends into the groove 4111, thereby securely connecting the plug connector 411 to the slot portion 42 in the insertion direction and preventing the plug connector 411 from being removed from the chamber 4211. Specifically, the inner wall surface of the chamber 4211 is provided with a plurality of mounting grooves for mounting the latch 431 at equal intervals along a circular line. The latch 431 is disposed in each mounting groove, with one end located within the groove and the other end extending into the chamber 4211. The bayonet structure 43 further includes an elastic member 432 disposed within the mounting slot for abutting against the bayonet 431, allowing the bayonet 431 to extend and retract relative to the mounting slot. One end of the elastic member 432 is fixedly connected to the mounting slot, and the other end is fixedly connected to the bayonet 431. Furthermore, each bayonet 431 has an inclined surface 4311 formed at one end extending from the mounting slot for abutment by the plug connector 411. This facilitates the bayonet 431's retraction into the mounting slot when the plug connector 411 is connected.

[0055] Furthermore, in order to improve the plug-in stability between the plug portion 41 and the slot portion 42, the plug portion 41 and the slot portion 42 are matched with a conical or truncated cone-shaped opening, that is, the plug portion 41 is set to be conical or truncated cone-shaped, and the slot portion 42 is opened with a matching conical or truncated cone-shaped hole.

[0056] When the plug portion 41 is engaged with the slot portion 42, each connecting rod 412 corresponds to and is inserted into the sleeve 422, the plug connector 411 is inserted into the cavity 4211, and the top end of the plug connector 411 pushes against the latch 431 and moves and slides into the installation groove. The latch 431 compresses the elastic part 432 to store energy. When the plug connector 411 is fully inserted into the cavity 4211, the latch 431 corresponds to the groove 4111 of the plug connector 411, and the elastic part 432 recovers, pushing the latch 431 into the groove 4111 on the outer periphery of the plug connector 411, thereby fixing the plug connector 411 in the cavity 4211.

[0057] When the beam 2 is connected to the plug part 41 at the top of the base 1, the wireless radio frequency device 52 transmits radio waves to the coil 51, and the coil 51 generates current to form a magnetic field. Due to the "magnetic field coupling" effect, the slot part 42 at the bottom end of the beam 2 and the plug part 41 at the top of the base 1 have magnetism when they are connected, so that the slot part 42 at the bottom end of the beam 2 and the plug part 41 at the top of the base 1 are automatically adsorbed by magnetism.

[0058] Similarly, when the beam column 2 is connected to the slot portion 42 at the end of the cap beam 3, the wireless radio frequency device 52 transmits radio waves to the coil 51, and the coil 51 generates current to form a magnetic field. Due to the "magnetic field coupling" effect, the top plug portion 41 of the beam column 2 and the slot portion 42 at the end of the cap beam 3 are magnetic when connected, so that the top plug portion 41 of the beam column 2 and the slot portion 42 at the end of the cap beam 3 are automatically adsorbed by magnetism.

[0059] Furthermore, to enhance the rigidity of the connection between the plug portion 41 of the beam column 2 and the cap beam 3, in this embodiment, a fixing groove for fixing the socket portion 42 is provided on the bottom surface of the cap beam 3. The size of the fixing groove corresponds to that of the block 421, and a plurality of grouting channels are provided within the fixing groove. Each grouting channel is connected to each sleeve 422 of the socket portion 42, and each grouting channel extends vertically upward to the top surface of the cap beam 3. After the cap beam 3 is connected to the beam column 2, grout is injected through the grouting channel to securely connect the socket portion 42 to the beam column 2. It is understood that, similarly, a grouting groove structure can be provided between the socket portion 42 of the beam column 2 and the plug portion 41 of the base 1 to securely connect the beam column 2 to the base 1.

[0060] See also Figure 2 In order to facilitate the precise docking of the two ends of the beam column 2 with the plug part 41 of the base 1 and the cap beam 3, the prefabricated bridge is also equipped with a positioning mechanism. The positioning mechanism includes a laser emitter 61, a reflector 62 and a sensor 63. The laser emitter 61 is fixedly connected to the outer peripheral surface of the beam column 2 and can emit laser in the vertical direction. There are two reflectors 62, which are fixed on the base 1 and the cap beam 3 respectively. Each reflector 62 corresponds vertically to the laser emitter and is used to reflect the laser emitted by the laser emitter. There are two sensors 63, both connected to the laser emitter 61, and each sensor 63 corresponds to each reflector 62, receives the laser reflected by the reflector 62, and calculates the position deviation of the beam column 2 by receiving the laser incident angle through the sensor 63, and then makes corresponding adjustments to make the beam column 2 accurately docked with the plug part 41 on the base 1 and the slot part 42 of the cap beam 3.

[0061] When assembling the bridge, the beam column 2 is first installed on the plug part 41 of the base 1, and then the cap beam 3 is installed on the top of the beam column 2. During installation, radio waves are emitted by the wireless radio frequency device 52 to energize the coil 51, and the coil 51 forms a magnetic field, so that the plug part 41 and the slot part 42 of the plug-in structure 4 are attracted to each other under the action of the magnetic field coupling, thereby improving the stability of the installation and reducing the probability of accidents.

[0062] Specifically, the present invention further provides a method for installing a prefabricated bridge, comprising the following steps:

[0063] S1, pre-buried base 1 in the ground, and then installed the plug part 41 of the plug structure 4 on the top of the base 1;

[0064] S2, install the prefabricated beam column 2 on the base 1 and fix it:

[0065] 1) A plug portion 41 is formed at the top of the beam 2, and a slot portion 42 is formed at the bottom of the beam 2. The plug rods 412 of the plug portion 41 extend into the beam 2. A coil 51 is formed inside the beam 2 to surround all the plug rods 412. A laser emitter 61 and a sensor 63 are installed on the beam 2, and a reflector 62 is installed on the base 1. The beam 2 is then hoisted above the plug portion 41 using a crane.

[0066] 2) Activate the wireless radio frequency device 52 to transmit radio waves to the coil 51. The coil 51 generates a magnetic field. Through magnetic attraction, the slot portion 42 at the bottom end of the beam 2 automatically aligns with the plug portion 41 on the base 1. The observation sensor 63 receives laser data and adjusts the vertical alignment accuracy of the beam 2 and the plug portion 41.

[0067] 3) The crane hoists the beam column 2 and slowly lowers it until it is completely placed on the base 1, and grouting is performed on the gaps at the connection to fix the beam column 2 on the base 1;

[0068] S3, install the prefabricated cap beam 3 on the beam column 2 and fix it:

[0069] 1) The bottom surface of the end of the cap beam 3 is installed with the slot portion 42 of the plug-in structure 4, and another reflector 62 is installed on the bottom surface of the cap beam 3. A crane is used to lift the cap beam 3 above the beam column 2;

[0070] 2) Under the action of the magnetic field, the slot portion 42 installed at the bottom of the cap beam 3 is attracted to the plug portion 41 at the top of the beam column 2. Then, the sensor 63 receives laser data and adjusts the alignment accuracy of the slot portion 42 at the bottom of the cap beam 3 and the plug portion 41 of the beam column 2.

[0071] 3) The crane lifts the cap beam 3 and slowly lowers it until it is completely placed on the top of the beam column 2, and then injects slurry into the grouting channel at the top of the cap beam 3. The slurry enters the slot part 42 connected to it through the grouting channel, filling the gap between the chamber 4211 and the plug part 41, and the gap between the connecting rod 412 and the sleeve 422, so that the slot part 42 solidifies at the top of the beam column 2.

[0072] S4, turn off the wireless radio frequency device 52, and remove the laser transmitter 61, the reflector 62 and the sensor 63 to complete the bridge installation work.

[0073] It is understandable that if the base 1 and the beam 2 are integrally provided or fixedly connected by other means, it is only necessary to install the cap beam 3 and the beam 2. That is, the steps required are as follows:

[0074] S1, pre-buried base 1 in the ground;

[0075] S2, installing the prefabricated beam column 2 on the base 1 and fixing it; wherein the beam column 2 is installed with a laser emitter 61 and a sensor 63;

[0076] S3, install the prefabricated cap beam 3 on the beam column 2 and fix it; wherein, the bottom surface of the cap beam 3 is installed with a reflector 62,

[0077] 1). Use a crane to lift the cap beam 3 above the beam column 2;

[0078] 2) Activate the wireless radio frequency device 52 to transmit radio waves to the coil 51, which generates a magnetic field. Under the action of the magnetic field, the slot portion 42 at the bottom of the cap beam 3 and the plug portion 41 at the top of the beam 2 are attracted to each other. Then, the sensor 63 receives laser data and adjusts the alignment accuracy of the slot portion 42 at the bottom of the cap beam 3 and the plug portion 41 of the beam 2;

[0079] 3). The crane lifts the cap beam 3 and slowly lowers it until it is completely placed on the top of the beam column 2.

[0080] S4, turn off the wireless radio frequency device 52, and remove the laser transmitter 61, the reflector 62 and the sensor 63 to complete the bridge installation work.

[0081] The circular receiving and plugging structure used in the embodiment of the present invention may also be a square receiving and plugging structure. Figure 8 The square socket plug structure shown is similar to Figure 9 Square slot portion shown.

[0082] The magnetic attraction structure and installation method of the prefabricated bridge provided by the present invention significantly improve installation efficiency and ensure construction worker safety through structural innovation and process optimization. The specific beneficial effects are as follows:

[0083] 1. Innovative use of magnetic field characteristics to achieve automatic assembly of bridges and ensure the safety of workers during construction.

[0084] Automatic Adsorption Installation: An innovative magnetic alignment mechanism automatically attaches the plug to the socket. Utilizing advanced electromagnetic induction principles, the magnetic alignment mechanism generates a strong and stable adsorption force. During installation, workers can easily complete the installation process by remotely controlling the device and utilizing a laser positioning system. This design significantly reduces the risk of workers operating at height or in complex environments, providing a solid guarantee for worker safety. Furthermore, the automated adsorption process significantly reduces manual steps, significantly improving installation efficiency and shortening installation time, effectively accelerating project progress.

[0085] 2. Double fixing system to improve the stability of the bridge after connection.

[0086] Innovative connection method: A composite connection method combining socket-and-socket connections with grouting sleeves is adopted. The socket-and-socket connection provides initial positioning and support, while the grouting sleeve connection, through the filling of high-strength grouting material, further enhances the integrity and stability of the connection. The two complement each other, making the connection between bridge components more secure and reliable, and better able to withstand various complex stresses and environmental factors.

[0087] 3. Innovative connection structure to increase connection reliability.

[0088] "Baylock pin + spring" combination optimization: A bold innovation is made to the traditional form of joint connection, introducing a "bayonet pin + spring" combination structure. When the bridge components are connected, the bayonet pin quickly embeds into the corresponding groove under the elastic force of the spring, achieving rapid positioning and locking. This design not only makes the connection process more convenient and efficient, but the continuous force of the spring also ensures that the connection parts are always in a tight fit, effectively improving the reliability of the connection.

[0089] 4. Applicable to columns of different shapes and has strong scalability.

[0090] Docking Structure Optimization: The shapes of the connecting plugs and slots are specifically designed for different column types. For cylindrical columns, the plugs and slots are designed as truncated cones; for square columns, they are designed as prisms; other special-shaped structures can adopt corresponding shapes. This unique design allows the components to be precisely aligned during the docking process, effectively reducing docking difficulty and improving construction accuracy.

[0091] 5. The connection technology is highly controllable and safe.

[0092] Fully automatic adsorption technology: Utilizing the innovative technical solution of "induction coil + wireless radio frequency device + magnetic field coupling", a stable and controllable electromagnetic field is generated. During the adsorption process of the slot part, the magnetic properties of martensitic stainless steel and the specific positioning of the laser positioning mechanism are fully utilized to achieve fully automatic adsorption. Without manual intervention, it can ensure the precise adsorption and installation of the slot part, further improving the degree of automation and installation efficiency of the construction.

[0093] The above-described embodiments merely illustrate the implementation methods of the present invention and should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An assembled bridge, comprising a base (1), a beam (2), a cap beam (3) and a plug-in structure (4), wherein the base (1) is buried in the ground, the beam (2) is vertically fixed on the base (1), the cap beam (3) is pressed against the top of the beam (2) by the plug-in structure (4), the plug-in structure (4) comprises a plug portion (41) formed at the top of the beam (2) and a slot portion (42) formed on the bottom surface of the cap beam (3), the slot portion (42) and the plug portion (41) being matched, and characterized in that: The plug portion (41) includes a plug connector (411) and a plurality of plug rods (412) arranged around the outer periphery of the plug connector (411), the plug connector (411) being formed on the top end surface of the beam column (2), one end of the plug rod (412) extending out of the top end surface of the beam column (2), and the other end extending toward the lower end of the beam column (2); The slot portion (42) includes a block (421) and a plurality of sleeves (422). The block (421) is embedded or integrally formed in the cap beam (3). A cavity (4211) is provided on the block (421) for the plug connector (411) to be inserted therein. A plurality of sleeves (422) are formed on the block (421) around the cavity (4211) for corresponding plug rods (412) to be inserted therein. The assembled bridge also includes a magnetic attraction alignment mechanism, which includes a coil (51) and a wireless radio frequency device (52). The coil (51) is pre-buried in the beam column (2) and surrounds the plug-in rod (412). The wireless radio frequency device (52) is used to transmit radio waves to wirelessly charge the coil (51). When the coil (51) is energized, a magnetic field is formed, causing the plug rod (412) and the sleeve (422) to generate magnetism and automatically adsorb, thereby achieving automatic docking between the slot portion (42) of the cap beam (3) and the plug portion (41) on the beam column (2).

2. The prefabricated bridge according to claim 1, characterized in that: The base (1) and the beam (2) are connected via a plug-in structure (4); a plug portion (41) is formed at the top end of the base (1); a slot portion (42) is formed at the bottom end of the beam (2); a block (421) of the slot portion (42) is embedded in or integrally formed at the bottom end of the beam (2); the plug portion (41) at the top end of the base (1) and the slot portion (42) at the bottom end of the beam (2) are matched.

3. The prefabricated bridge according to claim 2, characterized in that: The invention also includes a positioning mechanism, which includes a laser emitter (61), a reflector (62) and a sensor (63). The laser emitter (61) is fixedly connected to the outer peripheral surface of the beam column (2). There are two reflector plates (62), which are respectively fixed on the base (1) and the cap beam (3). Each reflector plate (62) vertically corresponds to the laser emitter (61). There are two sensors (63), which are both connected to the laser emitter (61), and each sensor (63) corresponds to each reflector plate (62). The sensors receive the laser reflected by the reflector plate (62), calculate the position deviation of the beam column (2) by receiving the laser incident angle through the sensor (63), and make corresponding adjustments so that the beam column (2) is accurately docked with the plug portion (41) on the base (1) and the slot portion (42) of the cap beam (3).

4. The prefabricated bridge according to claim 1, characterized in that: A latch structure (43) is formed between the plug connector (411) and the block (421), and the latch structure (43) includes a latch (431) that is laterally mounted on the inner circumference of the chamber (4211) and a groove (4111) arranged on the outer circumference of the plug connector (411), so that after the plug connector (411) is inserted into the chamber (4211) of the slot portion (42), one end of the latch (431) extends into the groove (4111) to prevent the plug connector (411) from withdrawing from the chamber (4211).

5. The prefabricated bridge according to claim 4, characterized in that: The bayonet structure (43) includes an elastic member (432). The inner wall surface of the chamber (4211) is provided with a plurality of mounting grooves at equal intervals along a circular line. The elastic member (432) is arranged in the mounting groove and presses against the bayonet (431), so that the bayonet (431) can be extended and retracted relative to the mounting groove.

6. The prefabricated bridge according to claim 1, characterized in that: The bottom surface of the cap beam (3) is provided with a fixing groove for accommodating the block (421), and a grouting channel is provided on the cap beam (3) and is connected to the fixing groove, so that after the cap beam (3) is connected to the beam column (2), slurry is injected through the grouting channel to strengthen the connection rigidity.

7. The prefabricated bridge according to claim 1, characterized in that: The plug rod (412) and the sleeve (422) are both made of magnetic steel.

8. A method for installing a prefabricated bridge according to any one of claims 1 to 7, characterized in that: The following steps are included: S1, pre-buried base (1) in the ground; S2, installing the prefabricated beam column (2) on the base (1) and fixing it; wherein a plug portion (41) is formed at the top of the beam column (2), a coil (51) is pre-embedded in the beam column (2), and a laser emitter (61) and a sensor (63) are installed on the beam column (2); S3, installing the prefabricated cap beam (3) on the beam column (2) and fixing it; wherein a reflective plate (62) is installed on the bottom surface of the cap beam (3), and the installation process includes the following steps: 1) Use a crane to lift the cap beam (3) above the beam column (2); 2) Start the wireless radio frequency device (52) to transmit radio waves to the coil (51), and the coil (51) conducts electricity to generate a magnetic field. Under the action of the magnetic field, the slot portion (42) at the bottom of the cap beam (3) and the plug portion (41) at the top of the beam (2) are adsorbed accordingly. Then, the sensor (63) receives laser data and adjusts the alignment accuracy of the slot portion (42) at the bottom of the cap beam (3) and the plug portion (41) of the beam (2); 3) The crane lowers the cap beam (3) until it is completely placed on the top of the beam column (2); S4, turn off the wireless radio frequency device (52), and remove the laser transmitter (61), the reflector (62) and the sensor (63) to complete the bridge installation.

9. A method for installing a prefabricated bridge according to claim 8, characterized in that: In S1, a plug portion (41) is installed at the top end of the base (1), a slot portion (42) is formed at the bottom end of the beam (2), and a reflector (62) is installed on the base (1); S2 includes the following steps: 1) Use a crane to lift the beam (2) to the top of the plug (41) of the base (1); 2) Start the wireless radio frequency device (52) to transmit radio waves to the coil (51), and the coil (51) is energized to generate a magnetic field. Through the action of the magnetic field, the slot portion (42) at the bottom end of the beam (2) is automatically aligned with the plug portion (41) on the base (1). The sensor (63) receives the laser data and adjusts the alignment accuracy of the beam (2) and the plug portion (41) in the vertical direction; 3) The crane lowers the beam column (2) until it is completely placed on the base (1), and grouting is performed on the gaps at the connection to fix the beam column (2) on the base (1).

10. A method for installing a prefabricated bridge according to claim 8, characterized in that: After step 3) of S3, the process further includes grouting the gap between the chamber (4211) and the plug portion (41).

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