Bridge concrete anti-falling blocking piece

Abstract

The utility model relates to the field of bridge construction, in particular to a bridge concrete anti-beam-falling blocking piece. The utility model provides a bridge concrete anti-beam-falling blocking piece. Main components of the bridge concrete anti-beam-falling blocking piece comprise anchoring pieces. The beam falling prevention stop block is connected with the anchoring part, and the anchoring part is inserted into a beam body; and the lifting device is connected to the bottom of the anti-falling beam check block and used for lifting the height of the anti-falling beam. Under the external force of earthquakes, strong wind and the like, horizontal force and vertical force can be effectively transmitted, relative displacement between the beam body and the check block is prevented, and therefore it is guaranteed that the beam body cannot fall off from a pier or a bridge abutment, and the safety of a bridge structure under the extreme condition is greatly improved. When an earthquake occurs, a bridge body possibly shakes horizontally, and the anchoring part can transmit the acting force to the anti-falling beam check block and a lower structure, so that the beam body is prevented from sliding off.

Description

Technical Field

[0001] This application relates to the field of bridge construction technology, specifically to a concrete anti-fall beam blocking component for bridges. Background Technology

[0002] In the event of earthquakes, strong winds, or vehicle collisions, bridges may be subjected to enormous horizontal and impact forces. Anti-falling beam blocks can limit the lateral and longitudinal displacement of the bridge structure, preventing it from falling from the piers or abutments, thus avoiding serious bridge collapses and ensuring the safety of pedestrians and vehicles. Currently, the common practice both domestically and internationally is to install cast-in-place reinforced concrete blocks at the center of the beam bottom. However, the traditional method of simultaneously casting the cast-in-place reinforced concrete blocks at the center of the beam bottom with the beam structure presents significant challenges in construction, including difficulties in formwork support and removal, as well as quality control of concrete vibration. The erection and removal of irregularly shaped formwork also slows down construction, and the blocks, located beneath the beam, are difficult to vibrate during casting, resulting in poor appearance quality. Utility Model Content

[0003] To address the shortcomings of existing technologies, this application provides a concrete anti-fall beam blocking component for bridges, which solves the technical problems of difficulties in the formwork support and dismantling of existing anti-fall beam blocking blocks, and the inability to guarantee the appearance of the concrete of the anti-fall beam blocking blocks.

[0004] This application provides a bridge concrete anti-fall beam blocking component, comprising:

[0005] Anchors;

[0006] An anti-falling beam stop block is connected to the anchor, which is inserted into the beam body;

[0007] A lifting device is connected to the bottom of the anti-fall beam block and is used to raise or lower the height of the anti-fall beam.

[0008] In the bridge concrete anti-fall beam blocking component provided in this application, the anchoring component includes anchoring steel bars.

[0009] In the bridge concrete anti-fall beam blocking component provided in this application, the anti-fall beam block is a precast reinforced concrete, and the internal reinforcing bars of the concrete anti-fall beam block extend outward from the anti-fall beam block to form the anchoring reinforcing bars. The anchoring reinforcing bars are bent and anchored to form a connection with the internal reinforcing bars of the upper bridge beam.

[0010] In the bridge concrete anti-fall beam blocking component provided in this application, a concrete interface agent layer is provided between the anti-fall beam block and the beam body.

[0011] In the bridge concrete anti-fall beam blocking component provided in this application, the top of the anti-fall beam block is roughened and a concrete interface agent is applied to form the concrete interface agent layer, so that the anti-fall beam block and the beam body form an integral structure.

[0012] In the bridge concrete anti-fall beam blocking component provided in this application, the lifting device includes an adjustable base device, four sets of which are evenly arranged at the bottom of the anti-fall beam block. The adjustable base device is symmetrically distributed along the center of the bottom of the anti-fall beam block and is a certain distance away from the bottom edge of the anti-fall beam block to prevent damage to the edge concrete.

[0013] In the bridge concrete anti-fall beam blocking component provided in this application, the adjustable base device includes an upper nut, a rotating screw, and a lower nut, which are placed vertically and concentrically. The inner wall of the upper nut has a rotating thread that is screwed into the inner thread of the rotating screw. The inner wall of the lower nut also has a rotating thread that is screwed into the inner thread of the rotating screw.

[0014] In the bridge concrete anti-fall beam blocking component provided in this application, a rectangular rotating block is provided in the middle of the rotating screw, and is welded to the rotating screw to form a whole.

[0015] In the bridge concrete anti-fall beam blocking component provided in this application, a base top support plate is provided on the top of the upper nut and welded to the upper nut to form an integral whole.

[0016] In the bridge concrete anti-fall beam blocking component provided in this application, a high-strength tie rod is provided between the upper nuts to connect multiple adjustable base devices to form a whole.

[0017] This application offers the following technical advantages: Prefabrication of the anti-fall beam blocks can be carried out in a factory or on-site prefabrication area, unrestricted by the construction progress and space limitations of the beam structure. This allows for early mass production and shortens the on-site construction cycle. Furthermore, ground prefabrication facilitates the adoption of standardized processes and quality control measures, improving the stability and consistency of the block quality and reducing quality problems caused by complex on-site construction conditions. For example, factory prefabrication utilizes molds for precise forming, ensuring the dimensional accuracy of the blocks, while on-site casting is susceptible to factors such as formwork deformation and insufficient compaction, affecting dimensional accuracy and appearance quality. Anchors are inserted into the beam structure, forming a stable mechanical connection. Under the influence of external forces such as earthquakes and strong winds, they effectively transmit horizontal and vertical forces, preventing relative displacement between the beam and the blocks, thus ensuring the beam will not fall from the piers or abutments and greatly improving the safety of the bridge structure under extreme conditions. For instance, during an earthquake, the bridge beam may experience significant horizontal swaying; the anchors can transfer this force to the anti-fall beam blocks and the substructure, preventing the beam from slipping.

[0018] The lifting device allows the height of the anti-falling beam blocks to be adjusted according to actual needs. During bridge construction, it can adapt to different beam heights and installation errors; during bridge use, it can also cope with deformation of the beam caused by factors such as temperature changes and foundation settlement, always keeping the anti-falling beam blocks in an effective working state and ensuring their restraining effect on the beam.

[0019] For example, in the summer when the temperature is high, the beam may expand and elongate. The height of the stop can be appropriately reduced by the lifting device to avoid excessive constraint stress on the beam. In the winter when the temperature is low and the beam shrinks, the height of the stop can be increased.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the bridge concrete anti-fall beam blocking component provided in the embodiments of this application. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the overall structure of the bridge concrete anti-fall beam blocking component provided in the embodiments of this application. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the overall structure of the bridge concrete anti-fall beam blocking component provided in the embodiments of this application. Figure 3 ;

[0025] Figure 4 This is a schematic diagram of the overall structure of the bridge concrete anti-fall beam blocking component provided in the embodiments of this application. Figure 4 .

[0026] Figure label:

[0027] 1. Anchoring steel bars; 2. Concrete interface agent layer; 3. Anti-fall beam block; 4. Adjustable base device; 5. Base top support plate; 6. Upper nut; 7. Rotating screw; 8. Rectangular rotating block; 9. Lower nut; 10. Base bottom support plate; 11. Plate; 12. Toothed plate; 13. Positioning plate; 14. Bolt. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] It should be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0031] It should be understood that, in order to clearly describe the technical solutions of the embodiments of this application, the terms "first" and "second" are used in the embodiments of this application to distinguish identical or similar items with essentially the same function and effect. For example, the first groove and the second groove are only used to distinguish different grooves and do not limit their order. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and the terms "first" and "second" are not necessarily different.

[0032] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0033] refer to Figures 1-4 A bridge concrete anti-fall beam blocking component, comprising:

[0034] Anchors;

[0035] Anti-falling beam block 3 is connected to the anchor, and the anchor is inserted into the beam body;

[0036] The lifting device is connected to the bottom of the anti-fall beam block 3 and is used to raise or lower the height of the anti-fall beam.

[0037] The main body of the anti-fall beam block 3 is prefabricated on the ground according to design requirements. Its internal steel reinforcement layout and concrete mix ratio are calculated to meet strength and durability requirements. Anchors (such as anchoring steel bars 1) are pre-installed during block prefabrication; one end connects to the main steel reinforcement skeleton of the block, and the other end extends out of the block for insertion into the beam. When the beam is constructed to the appropriate position, the anti-fall beam block 3 with anchors is hoisted to the installation location. The anchors are accurately inserted into pre-drilled holes in the beam or pre-embedded before the beam concrete is poured. Grouting or other methods are then used to ensure a tight bond between the anchors and the beam concrete, achieving a reliable connection between the anti-fall beam block 3 and the beam.

[0038] For example, for precast reinforced concrete anti-fall beam blocks 3, the reinforcing bars are first processed and bound into a skeleton according to the design drawings in the factory, and then concrete is poured. The anchor reinforcement bars are welded to the skeleton or other reliable connection methods are used to ensure that the position of the anchor remains unchanged during hoisting and installation.

[0039] Key components in the lifting device (such as screws and nuts) achieve height adjustment through threaded connections. When it is necessary to raise the anti-fall beam block 3, rotating the screw 7 causes the nut to move upward along the screw, raising the block connected to the nut; conversely, when it is necessary to lower the block height, rotating the screw 7 in the opposite direction causes the nut to move downward, lowering the block. Different lifting device designs may differ in specific structure and operation, but the basic principle is the same: using threaded transmission to convert rotational motion into linear motion to achieve height adjustment.

[0040] Taking a common screw and nut lifting device as an example, the screw typically has a thread with a certain pitch, and the inner wall of the nut has a matching thread. When torque is applied to the screw using tools such as a wrench, the screw rotates inside the nut. Due to the constraint of the thread, the nut can only move along the screw's axis, thereby driving the anti-fall beam stop 3 to rise and fall. During adjustment, it is necessary to ensure the fitting accuracy and smooth operation between the components to avoid jamming or loosening. At the same time, to ensure the stability of the lifting device under the action of the anti-fall beam stop 3 and external forces, each component should have sufficient strength and rigidity.

[0041] The lifting device can adopt a structure such as a sleeve, a toothed plate 12, a gear set, and a crank handle. The toothed plate 12 is sleeved inside the sleeve, and the crank handle is connected to the toothed plate 12 through the gear set. Rotating the crank handle drives the toothed plate 12 to move up and down. The toothed plate 12 can be fixed by two opposing detachable plates 11 and a positioning plate 13 with the same teeth. That is, after the toothed plate 12 is in place, the positioning plate 13 is engaged with the toothed plate 12, and the plates 11 are placed on the side of the positioning plate 13 and the toothed plate 12 that are far away from each other. Then, they are fixed by bolts 14 so that the plates 11 clamp the positioning plate 13 and the toothed plate 12.

[0042] The anchoring components include anchoring steel bars 1. Anchoring steel bars 1 have high strength and good anchoring performance, which can reliably connect the anti-falling beam block 3 to the beam body and improve the stability of the overall structure.

[0043] The anchoring steel bar 1 has a good bond with the concrete. When it is inserted into the concrete of the beam and bent and anchored, the tensile strength of the steel bar and the bond force of the concrete to the steel bar are used to form an effective anchoring system, which transfers the force on the anti-falling beam block 3 to the beam structure.

[0044] The material of the anchoring steel bar 1 should be a suitable high-strength steel, and its diameter and length need to be determined according to the specific dimensions of the beam and the anti-falling beam block 3, as well as the stress calculation. During construction, it is necessary to ensure that the insertion position of the anchoring steel bar 1 is accurate, and that the angle and length of the bend anchor meet the design specifications to ensure the anchoring effect. At the same time, in order to improve the anchoring performance, the surface of the anchoring steel bar 1 can be treated, such as rust removal and coating with anchoring agent. The extended steel bar length meets the anchoring structure requirements and is bend anchored to ensure that the steel bar has sufficient anchoring length and anchoring effect in the beam concrete, preventing the steel bar from being pulled out of the concrete, and further enhancing the reliability of the connection between the anti-falling beam block 3 and the beam. Its working principle is to use the bonding force and mechanical interlocking force between the steel bar and the concrete in the bend anchor part to more effectively transfer the force on the anti-falling beam block 3 to the beam structure.

[0045] The anti-fall beam block 3 is a precast reinforced concrete structure. The internal reinforcing bars of the concrete anti-fall beam block 3 extend outwards to form anchoring bars 1. These anchoring bars 1 are bent and anchored to connect with the internal reinforcing bars of the upper bridge beam. This outward extension of the internal reinforcing bars of the anti-fall beam block 3 to form anchoring bars 1, along with the bent anchoring treatment, achieves a direct connection between the anti-fall beam block 3 and the internal reinforcing bars of the beam, further enhancing the integrity and reliability of the connection and improving the structural coordination capabilities.

[0046] By utilizing the extension of the reinforcing steel bars of the anti-fall beam block 3 as anchoring steel bars 1, the use of additional anchoring components is reduced, simplifying the structural connection method. The bent anchor treatment provides better anchorage of the reinforcing steel bars in the beam concrete, preventing the reinforcing steel bars from being pulled out, thereby ensuring the connection strength between the anti-fall beam block 3 and the beam.

[0047] When designing the extended length of internal reinforcing bars, the anchorage length requirements, the thickness of the concrete cover, and the ease of construction should be comprehensively considered. The bend and anchorage shape of the extended reinforcing bars should be designed according to the arrangement of the internal reinforcing bars in the beam to ensure smooth connection with the beam's reinforcing bars without affecting other structural components. During the pouring of the beam concrete, care should be taken to protect the extended reinforcing bars to prevent damage or displacement.

[0048] A concrete interface agent layer 2 is provided between the anti-fall beam block 3 and the beam body. The concrete interface agent layer 2 improves the bonding performance between the anti-fall beam block 3 and the beam body, making the connection between the two tighter, effectively preventing problems such as hollowness and cracking at the interface, and improving the overall durability of the structure.

[0049] The concrete interface agent can fill the tiny pores on the surface of the anti-fall beam block 3 and the beam body, increasing the contact area. At the same time, its chemical components can react with the concrete to form chemical bonds, thereby improving the bond strength.

[0050] The top of the anti-fall beam block 3 is roughened and a concrete interface agent is applied to form a concrete interface agent layer 2, so that the anti-fall beam block 3 and the beam form an integral structure.

[0051] The top of the anti-fall beam block 3 is roughened and a concrete interface agent is applied, which further enhances the bonding force between the anti-fall beam block 3 and the beam body, making the two form a more solid overall structure and improving the collaborative working ability of the anti-fall beam system when subjected to external forces.

[0052] The roughening treatment creates a rough surface on the top of the anti-fall beam block 3, increasing the mechanical bonding force with the concrete interface agent. The concrete interface agent adheres and penetrates better on the roughened surface, working in conjunction with the uneven structure created by the roughening to improve the bond strength at the interface. The roughening treatment also increases the contact area and friction with the subsequently poured concrete beam; the application of the concrete interface agent further improves the bonding performance between the upper and lower concrete layers, allowing the anti-fall beam block 3 to form an integral structure with the beam, sharing the load. The principle is that the roughening treatment provides mechanical bonding, while the concrete interface agent, through chemical reactions and physical adsorption, enhances the bond strength between the two concrete layers, preventing delamination and hollow areas during use, and improving the overall integrity and durability of the structure.

[0053] The lifting device includes adjustable base devices 4, with four sets evenly arranged at the bottom of the anti-fall beam block 3. The adjustable base devices 4 are symmetrically distributed along the center of the bottom of the anti-fall beam block 3, maintaining a certain distance from the bottom edge of the anti-fall beam block 3 to prevent damage to the edge concrete. The four sets of evenly arranged and centrally symmetrical adjustable base devices 4 provide stable support for the anti-fall beam block 3, preventing it from tilting or shifting. Maintaining a certain distance from the bottom edge avoids damage to the edge concrete when adjusting the height or bearing load, ensuring the integrity and service life of the anti-fall beam block 3.

[0054] The symmetrically arranged adjustable base devices 4 ensure even distribution of force on the anti-fall beam blocks 3, with each base sharing a portion of the load to maintain the balance of the blocks. Maintaining a distance from the edge is to account for stress concentration in the edge concrete under stress, and this adverse effect is reduced through a reasonable layout.

[0055] The adjustable base device 4 includes an upper nut 6, a rotating screw 7, and a lower nut 9, which are placed vertically and concentrically. The inner wall of the upper nut 6 has a rotating thread that is screwed into the inner thread of the rotating screw 7. The inner wall of the lower nut 9 has a rotating thread that is screwed into the inner thread of the rotating screw 7.

[0056] The combination of the upper nut 6, the rotating screw 7, and the lower nut 9 forms a simple and effective lifting adjustment mechanism. It achieves precise height adjustment through threaded screw connection, is easy to operate, provides reliable support, and adapts to different installation height requirements.

[0057] Utilizing the transmission characteristics of the thread, when the screw 7 is rotated, the rotational motion of the screw is converted into the relative linear motion of the upper and lower nuts 9 due to the threaded connection between the upper nut 6 and the lower nut 9 and the rotating screw 7, thereby realizing the change of the overall height of the adjustable base device 4.

[0058] A rectangular rotating block 8 is installed in the middle of the rotating screw 7 and is welded to the rotating screw 7 as a whole. The rectangular rotating block 8 is welded to the rotating screw 7 as a whole, providing a convenient operating point for the rotation of the rotating screw 7, making it easy to use tools (such as wrenches) for rotation operation, and improving the efficiency and convenience of the lifting device in adjusting the height.

[0059] The rectangular rotating block 8 is shaped to facilitate clamping with tools such as wrenches. By applying torque, the rotating screw 7 rotates around its axis, thereby achieving lifting and lowering adjustment. Welding them together as a whole ensures the connection strength between the rotating block and the screw, enabling it to withstand large torques without loosening or damage.

[0060] A base support plate 5 is installed on the top of the upper nut 6 and welded to the upper nut 6 as a whole. The base support plate 5 is welded to the upper nut 6 as a whole, which increases the contact area between the upper nut 6 and the bottom of the anti-fall beam block 3, makes the support force distribution more uniform, reduces local stress concentration, protects the concrete at the bottom of the anti-fall beam block 3 from damage, and improves the stability of the support.

[0061] A larger contact area can more evenly distribute the weight and load of the anti-fall beam block 3 to the upper nut 6 and the rotating screw 7, avoiding stress concentration caused by an insufficient contact area, thereby protecting the concrete structure at the bottom of the anti-fall beam block 3.

[0062] A high-strength tie rod is installed between the upper nuts 6 to connect multiple adjustable base devices 4 into a whole. The high-strength tie rod connects multiple adjustable base devices 4 into a whole, which enhances the integrity and stability of the entire lifting device, prevents individual bases from shifting or tilting under force, and improves the safety and reliability of the anti-fall beam stop 3 under complex stress conditions.

[0063] The high-strength tie rod connects the various adjustable base devices 4, forming a collaborative structural system. When a base is subjected to external force, the tie rod transmits the force to the other bases, achieving force redistribution and balance, thereby maintaining the stability of the entire lifting device.

[0064] A base plate 10 is provided on the top of the lower nut 9, and is welded to the lower nut 9 to form a whole.

[0065] The high-strength tie rod is equipped with a telescopic nut in the middle, which can adjust the spacing of the adjustable base by rotating the tie rod to adapt to different sizes of precast concrete anti-fall beam blocks 3.

[0066] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bridge concrete anti-fall beam blocking component, characterized in that, include: Anchors; An anti-falling beam stop block is connected to the anchor, which is inserted into the beam body; A lifting device is connected to the bottom of the anti-fall beam block and is used to raise or lower the height of the anti-fall beam. The lifting device includes an adjustable base device, with four sets evenly arranged at the bottom of the anti-fall beam block. The adjustable base device is symmetrically distributed along the center of the bottom of the anti-fall beam block and is a certain distance away from the bottom edge of the anti-fall beam block to prevent damage to the edge concrete. The adjustable base device includes an upper nut, a rotating screw, and a lower nut, which are placed vertically and concentrically. The inner wall of the upper nut has a rotating thread that is screwed into the inner thread of the rotating screw. The inner wall of the lower nut also has a rotating thread that is screwed into the inner thread of the rotating screw.

2. The bridge concrete anti-fall beam blocking component according to claim 1, characterized in that, The anchor includes anchoring steel bars.

3. The bridge concrete anti-fall beam blocking component according to claim 2, characterized in that, The anti-fall beam block is a precast reinforced concrete block. The internal reinforcing bars of the concrete anti-fall beam block extend outward from the anti-fall beam block to form the anchoring reinforcing bars. The anchoring reinforcing bars are bent and anchored to connect with the internal reinforcing bars of the upper bridge beam.

4. The bridge concrete anti-fall beam blocking component according to claim 1, characterized in that, A concrete interface agent layer is provided between the anti-fall beam block and the beam body.

5. The bridge concrete anti-fall beam blocking component according to claim 4, characterized in that, The top of the anti-fall beam block is roughened and a concrete interface agent is applied to form the concrete interface agent layer, so that the anti-fall beam block and the beam body form an integral structure.

6. The bridge concrete anti-fall beam blocking component according to claim 1, characterized in that, A rectangular rotating block is provided in the middle of the rotating screw, and is welded to the rotating screw to form a whole.

7. The bridge concrete anti-fall beam blocking component according to claim 1, characterized in that, The upper nut is provided with a base support plate, which is welded to the upper nut to form a whole.

8. The bridge concrete anti-fall beam blocking component according to claim 1, characterized in that, A high-strength tie rod is provided between the upper nuts to connect multiple adjustable base devices into a whole.

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