A high-pressure prefabricated beam component for highway bridge and installation method

Abstract

The present invention relates to the field of highway bridge construction, and in particular to a high-pressure prefabricated beam component for highway bridges, comprising a supporting beam assembly and a supporting plate assembly that cooperate with each other. The supporting plate assembly serves as a road surface supporting surface of the bridge, and forms a road surface after paving cement or asphalt. The supporting beam assembly serves as a central point gravity bearing structure of the bridge, and bears the gravity from the supporting plate assembly and pedestrians and vehicles above it during use, thereby solving the technical problem that the pressure-bearing performance of the central load-bearing part of the highway bridge decreases under long-term high-pressure working conditions, which easily causes safety hazards. At the same time, an installation method for the above-mentioned prefabricated beam component is proposed.

Description

Technical Field

[0001] The invention relates to the field of highway bridge construction, and in particular to a high-pressure prefabricated beam component of a highway bridge and an installation method thereof. Background Art

[0002] Highway bridges are built for the passage of vehicles and pedestrians on highways. Highway bridges are made of steel, reinforced concrete or wood and are designed for heavy rolling loads of up to 0.8 million tons. The width of the driving section depends on the expected intensity and speed of traffic and the shape and span of the bridge (usually 7-21 meters). The sidewalk is at least 1 meter wide.

[0003] The common types of existing highway bridges are beam bridges, arch bridges, rigid frame bridges, etc. It has become a trend to use high-strength steel structure prefabricated parts for on-site assembly. Its advantages are:

[0004] 1. Prefabricated parts can be prefabricated in the factory, with a higher degree of automation, reducing manual intervention, and can be assembled and connected with each other on the construction site through connecting structures, with stronger integrity, higher efficiency and precision, and better completion and integrity of the finished product;

[0005] 2. During the production process of prefabricated parts, high-strength steel with higher purity can be used for prefabrication. Compared with the mixture of reinforced concrete, high-strength steel has stronger load-bearing performance and rigidity, and longer service life.

[0006] However, in highway bridge construction, due to the strong integrity of prefabricated parts, the supporting strength of the complete body is reflected in the connections between the prefabricated parts. The prefabricated parts are mostly connected with high-strength prefabricated components to ensure the strength of the connections.

[0007] The invention patent with Chinese patent application number 202210691911.8 discloses an improved bridge stress panel prefabricated component, including a box panel and a box body installed under the box panel, and the box body cross-section is a trapezoidal structure; the bridge panel is formed by integrally casting between the box panel and the box body, and the stress mechanism arranged on the box body is tensioned so that the box panel and the box body can withstand greater pressure, thereby ensuring the supporting performance of the box panel; the guide mechanism is lifted up by the stress mechanism, and then the guide mechanism moves upward, and the guide mechanism drives the tensioning mechanism to move upward, and then the tensioning mechanism itself is tightened, so that the tensioning mechanism tightens the box panel, which plays a role in stabilizing the box panel, and the limit mechanism is able to touch the stress mechanism downward, and then the limit mechanism will be engaged with the pier, so that the performance of the pier supporting the box body is better. The technical solution proposed in the above invention is to increase the prefabricated components to improve the stability of the long bridge panel headquarters which is subject to great stress; however, its structure is relatively complex, which will inevitably lead to cumbersome subsequent maintenance procedures, and for large-scale infrastructure such as bridges, its service life is at least more than ten years, so the requirements for its structural stability are more stringent. At the same time, due to its aesthetics and practicality, arch bridges with protruding upward in the middle are gradually withdrawing from the market, and are being replaced by flat bridges. The requirements for the load-bearing performance of the central part of flat bridges are much higher than those of arch bridges. Summary of the invention

[0008] Therefore, based on the above concept, the present invention proposes a high-pressure prefabricated beam component for highway bridges and an installation method, which solves the technical problem that the pressure-bearing performance of the central load-bearing part of the highway bridge is reduced under long-term high-pressure working conditions, which easily causes safety hazards.

[0009] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a high-pressure prefabricated beam component of a highway bridge, comprising a supporting beam assembly and a supporting plate assembly that cooperate with each other, wherein the supporting plate assembly serves as the pavement support surface of the bridge, and forms the pavement after paving cement or asphalt, and the supporting beam assembly serves as the center point gravity bearing structure of the bridge, bearing the gravity from the supporting plate assembly and the pedestrians and vehicles above it during use;

[0010] The support plate assembly and the support beam assembly are movably connected, the support plate assembly is used to connect the two ends of the plane road, the support beam assembly is arranged at the center position of the support plate assembly, and the bottom of the support beam assembly is connected to the ground;

[0011] The support plate assembly comprises a first road plate surface and a second road plate surface of the same structure, a central support beam component, a left reinforcing component and a right reinforcing component, a plurality of reinforcing prefabricated beams are arranged below the first road plate surface and the second road plate surface, the central support beam component is used to connect the first road plate surface and the second road plate surface, the left reinforcing component is arranged on a side edge of the first road plate surface away from the second road plate surface, and the right reinforcing component is arranged on a side edge of the second road plate surface away from the first road plate surface;

[0012] The support beam assembly comprises a main support beam, a left support beam, a right support beam and a support base, wherein the support base is fixedly connected to the ground, and a main connection groove and a secondary connection groove are provided on the upper surface of the support base, wherein the secondary connection grooves are two in number and are symmetrically arranged on both sides of the main connection groove, the main connection groove is connected to the main support beam, and the secondary connection grooves are respectively connected to the left support beam and the right support beam;

[0013] One end of the main support beam is connected to the support base, and the other end is connected to the central support beam member; one end of the left support beam is connected to the support base, and the other end is connected to the left reinforcement member; one end of the right support beam is connected to the support base, and the other end is connected to the right reinforcement member;

[0014] The main support beam improves its coordination with the support base under the pressure of the support plate assembly and the pressure above it.

[0015] Furthermore, each of the reinforced prefabricated beams is arranged along the length direction of the first highway slab and the second highway slab, and the distance between two adjacent reinforced prefabricated beams is the same.

[0016] Furthermore, the width of the central support beam member in the horizontal plane accounts for one fifth to one quarter of the width of the first highway deck.

[0017] Furthermore, the central support beam component includes an upper support beam and a lower support beam that are clamped together, the upper support beam and the lower support beam are locked by bolts, the vertical cross-sections of the upper support beam and the lower support beam after being matched are I-shaped, and the first highway plate surface and the second highway plate surface are clamped on both sides of the central support beam component.

[0018] Furthermore, the structures of the left reinforcement component and the right reinforcement component are symmetrical to each other. The left reinforcement component includes a left upper beam and a left lower beam that are snap-fitted to each other, and the right reinforcement component includes a right upper beam and a right lower beam that are snap-fitted to each other. The left upper beam and the left lower beam are locked by bolts, and the right upper beam and the right lower beam are locked by bolts. Protective fences are arranged on the left upper beam and the right upper beam.

[0019] Furthermore, an extended clamping portion is provided on the main support beam, and the extended clamping portion extends toward the left reinforcing member and the right reinforcing member respectively and is clamped with the left lower beam and the right lower beam respectively.

[0020] Furthermore, a rotating bearing seat is provided at the bottom of the main support beam, and the rotating bearing seat can rotate horizontally 360° along the central axis of the main support beam. A first thread is provided on the outer circumferential side surface of the rotating bearing seat, and a second thread is provided on the inner circumferential side surface of the main connecting groove, and the first thread and the second thread are engaged with each other.

[0021] Furthermore, a plurality of elastic top columns are arranged on the outer circumferential side surface of the rotating bearing seat, and the elastic top columns are arranged at intervals along the spiral direction of the first thread. A plurality of arc grooves are arranged on the inner circumferential side surface of the main connecting groove, and the arc grooves are arranged at intervals along the spiral direction of the second thread. The elastic top columns and the arc grooves cooperate with each other.

[0022] Furthermore, an inclined transition surface is provided on the elastic top column.

[0023] A method for installing a high-pressure prefabricated beam component of a highway bridge comprises the following steps:

[0024] S1. Assemble the support plate assembly; first lay the lower support beam flat on the ground, and lay the first road plate surface and the second road plate surface flush on both sides of the lower support beam, and then clamp the upper support beam and the lower support beam together and fix them with bolts to form a central support beam component and preliminarily fix the first road plate surface and the second road plate surface; install the left reinforcement component and the right reinforcement component in the same way;

[0025] S2. Installation of protective fence: The protective fence is fixedly installed on the left upper beam and the right upper beam, and the protective fence or green belt fence can be installed on the upper support beam at the same time;

[0026] S3, support beam assembly installation: excavate the ground foundation, place the support base on the cement foundation and fix it by reinforcing bolts; then place the main support beam, left support beam and right support beam in the main connection groove and the auxiliary connection groove respectively;

[0027] S4. The support plate assembly cooperates with the support beam assembly. Positioning grooves are excavated on the curbs on both sides in advance and hard-formed with cement to place and fix the support plate assembly. The support plate assembly is lifted by a crane and placed in the positioning groove. At the same time, the main support beam, left support beam and right support beam are fixedly connected to the central beam component, the left reinforcement component and the right reinforcement component respectively. The installation is now completed.

[0028] By adopting the above technical solution, the beneficial effects of the present invention are:

[0029] 1. Compared with the existing prefabricated beam structural parts in the field of bridges, the present invention has better pressure-bearing performance and longer service life. Specifically, through the coordinated support plate assembly and support beam assembly, the weakest middle area of ​​the bridge can have better pressure-bearing performance, thereby improving the safety of bridge use. The present invention is a prefabricated component as a whole, which greatly improves the installation efficiency. The road surface adopts the method of separating the first highway plate surface and the second highway plate surface from each other, in order to separate the pressure of the two and avoid the risk of deformation caused by excessive pressure of the overall prefabricated components. Support beam assemblies are provided for supporting the pressure of the first highway plate surface and the second highway plate surface. The prefabricated beam bridge During use, the center of the beam is the bearing center of gravity in both the length and width directions. This is because the bridge can contact the ground on both sides, while the center is far away from the ground. At the same time, the center in the width direction serves as an expressway, and has the largest traffic volume above it during daily use, which also makes it a focus of pressure. Therefore, the present invention arranges a support beam assembly at the center position to improve the pressure-bearing performance of the bridge during overall use, so as to ensure its stability and service life. In addition, the main support beam in the support beam assembly serves as a supporting member that directly contacts the center of the bridge. After being subjected to pressure from above, it can be continuously fine-tuned to prevent itself from shaking, thereby ensuring that its supporting performance always remains excellent.

[0030] 2. The present invention provides reinforcing prefabricated beams at the lower bottom surfaces of the first highway slab and the second highway slab. The role of the reinforcing prefabricated beams is reflected in that they are in direct contact with the first highway slab and the second highway slab, and are arranged along the length direction of the first highway slab and the second highway slab, playing a role similar to that of steel bars in a house structure, thereby improving the stability of the bridge during use. In addition, the I-beams are arranged at intervals, which can simplify materials while ensuring that the supporting performance does not change.

[0031] 3. In the present invention, the width of the central support beam component in the horizontal plane accounts for one-fifth to one-quarter of the width of the first highway slab, in order to ensure the contact area between it and the first highway slab and the second highway slab and thus ensure its support stability.

[0032] 4. The central support beam member, the left reinforcement member and the right reinforcement member in the present invention are divided into two upper and lower spliced ​​bodies, the purpose of which is to ensure the flexibility of installation while improving the convenience of later maintenance of the bridge.

[0033] 5. In the present invention, an extended clamping part is arranged on the support beam, wherein the extended clamping part mainly cooperates with the central support beam component to make the cooperation between the first road plate surface and the second road plate surface closer, ensuring that the two will not produce gaps due to the vibration transmitted by the running of the car above, thereby affecting the stability of the overall structure, that is, the central support beam component from the center.

[0034] 6. In the present invention, the bottom of the main support beam is improved structurally to enable it to adapt to the long-term use of the bridge. The essential reason is that the main support beam is the most important pressure-bearing component of the bridge. Whether it is stable directly leads to the stability of the entire bridge and is directly related to the safety of the bridge. At the same time, since the material of the prefabricated beam components is already very mature and reliable high-strength composite steel is used, the vibration caused by the pressure above it is negligible. However, for prefabricated parts, they are different from reinforced concrete structures. They are made of metal parts spliced ​​together. Long-term vibration will also cause the internal structure to loosen. Therefore, the bottom of the main support beam is improved structurally, specifically: a rotating bearing seat is provided, so that the rotating bearing seat is directly connected to the support base. The rotating bearing seat can rotate 360° on the horizontal plane along the central axis of the main support beam, but its stability in the vertical direction remains unchanged. Then, a first thread is provided on the outer circumferential side of the rotating bearing seat, and a second thread is provided in the main connecting groove on the support base. The main support beam is made by the cooperation of the first thread and the second thread. The main support beam is screwed to the support base in a screw-in manner. There is a certain margin after the two are connected. At this time, the two are already in a tightly matched state. The reason is that an elastic top column is arranged on the outer circumferential side surface of the rotating bearing seat, and an arc groove is arranged on the inner circumferential side surface of the main connecting groove. The elastic top column and the arc groove cooperate with each other to ensure that the main support beam and the support base are locked with each other and do not loosen. When the pressure on the upper side increases, the support plate assembly is subjected to force and transmitted to the main support beam. The main support beam is subjected to force and continues to be slightly rotated and screwed downward. The elastic top column and the arc groove reach the next state of cooperation, ensuring that even if the support plate assembly is slightly deformed after being subjected to high-intensity pressure and the high-intensity pressure is transmitted downward to the main support beam, the main support beam can always tightly connect the support plate assembly and the support base to each other, so that the three are integrated and do not shake. As we all know, the main risk of prefabricated beam components when they are used as a whole after cooperation is that the components are loose and vibrate locally. This situation will directly lead to instability of the overall structure. The present invention completely eliminates this situation and improves the stability and service life of the bridge.

[0035] 7. The present invention simultaneously proposes an installation method for the high-pressure prefabricated beam components of the highway bridge. This method pre-processes the terrain so that the two ends of the support plate assembly can be fixed against the two ends of the road trough for installation. At the same time, the support plate assembly and the support beam assembly are pre-assembled and then directly installed on site. The pre-installation adopts mechanized and automatic installation. The overall process simplifies labor and improves efficiency, and also avoids excessive manual intervention to reduce the accuracy of coordination between mechanical parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0037] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0038] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0039] Figure 3 A top view of the support rod base in the present invention;

[0040] Figure 4 It is a schematic diagram of the side structure of the support plate assembly in the present invention;

[0041] Figure 5 It is a schematic diagram of the structure of the support beam assembly in the present invention;

[0042] Figure 6 This is a schematic diagram of the coordination structure between the main support beam and the support base in the present invention;

[0043] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0044] Figure 8 It is a schematic diagram of the matching structure of the rotating bearing seat and the main connecting groove in the present invention;

[0045] Fig. 9 for Figure 8 Enlarged view of point C in the middle;

[0046] Fig.10 It is a flow chart of the installation method in the present invention. DETAILED DESCRIPTION

[0047] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0048] See also Figure 1-Figure 10The present invention provides a high-pressure prefabricated beam component for a highway bridge, comprising a supporting beam assembly and a supporting plate assembly that cooperate with each other, wherein the supporting plate assembly serves as a pavement support surface of the bridge, and forms a pavement after paving cement or asphalt, and the supporting beam assembly serves as a central point gravity bearing structure of the bridge, bearing the gravity from the supporting plate assembly and pedestrians and vehicles above it during use;

[0049] The support plate assembly and the support beam assembly are movably connected, the support plate assembly is used to connect the two ends of the plane road, the support beam assembly is arranged at the center position of the support plate assembly, and the bottom of the support beam assembly is connected to the ground;

[0050] The support plate assembly comprises a first road plate surface 1 and a second road plate surface 2 of the same structure, a central support beam component 3, a left reinforcing component 4 and a right reinforcing component 5, a plurality of reinforcing prefabricated beams 11 are arranged below the first road plate surface 1 and the second road plate surface 2, the central support beam component 3 is used to connect the first road plate surface 1 and the second road plate surface 2, the left reinforcing component 4 is arranged on a side edge of the first road plate surface 1 away from the second road plate surface 2, and the right reinforcing component 5 is arranged on a side edge of the second road plate surface 2 away from the first road plate surface 1;

[0051] The support beam assembly includes a main support beam 6, a left support beam 7, a right support beam 8 and a support base 9. The support base 9 is fixedly connected to the ground. A main connection groove 91 and a secondary connection groove 92 are provided on the upper surface of the support base 9. There are two secondary connection grooves 92, which are symmetrically arranged on both sides of the main connection groove 91. The main connection groove 91 is connected to the main support beam 6, and the secondary connection grooves 92 are respectively connected to the left support beam 7 and the right support beam 8;

[0052] One end of the main support beam 6 is connected to the support base 9, and the other end is connected to the central support beam member 3; one end of the left support beam 7 is connected to the support base 9, and the other end is connected to the left reinforcing member 4; one end of the right support beam 8 is connected to the support base 9, and the other end is connected to the right reinforcing member 5;

[0053] The main support beam 6 is improved in coordination with the support base 9 under the pressure of the support plate assembly and the pressure above it.

[0054] Each of the reinforced prefabricated beams 11 is arranged along the length direction of the first highway slab 1 and the second highway slab 2, and the spacing between two adjacent reinforced prefabricated beams 11 is the same. The width of the central supporting beam component 3 in the horizontal plane accounts for one-fifth of the width of the first highway slab 1, ensuring that the contact area between the two is sufficient.

[0055] The central support beam component 3 includes an upper support beam 31 and a lower support beam 32 that are snap-fitted to each other, the upper support beam 31 and the lower support beam 32 are locked by bolts, and the vertical cross-sections of the upper support beam 31 and the lower support beam 32 after being matched are I-shaped, and the first highway slab surface 1 and the second highway slab surface 2 are snap-fitted to the two sides of the central support beam component 3; the left side reinforcement component 4 and the right side reinforcement component 5 are symmetrical in structure, the left side reinforcement component 4 includes a left side upper beam 41 and a left side lower beam 42 that are snap-fitted to each other, and the right side reinforcement component 5 includes a right side upper beam 51 and a right side lower beam 52 that are snap-fitted to each other, the left side upper beam 41 and the left side lower beam 42 are locked by bolts, the right side upper beam 51 and the right side lower beam 52 are locked by bolts, and the left side upper beam 41 and the right side upper beam 51 are provided with protective fences 43.

[0056] The main support beam 6 is provided with an extended clamping portion 61, which extends toward the left reinforcing member 4 and the right reinforcing member 5 and is clamped with the left lower beam 42 and the right lower beam 52 respectively;

[0057] A rotating bearing seat 62 is provided at the bottom 6 of the main support beam, and the rotating bearing seat 62 can rotate horizontally 360° along the central axis of the main support beam 6. A first thread 621 is provided on the outer circumferential side surface of the rotating bearing seat 62, and a second thread 911 is provided on the inner circumferential side surface of the main connecting groove 91. The first thread 621 and the second thread 911 are meshed with each other. A plurality of elastic top columns 622 are provided on the outer circumferential side surface of the rotating bearing seat 62, and the elastic top columns 622 are arranged at intervals along the spiral direction of the first thread 621. A plurality of arc grooves 912 are provided on the inner circumferential side surface of the main connecting groove 91, and the arc grooves 912 are arranged at intervals along the spiral direction of the second thread 911. The elastic top column 622 and the arc groove 912 cooperate with each other, and an inclined transition surface 6221 is provided on the elastic top column 622.

[0058] The present invention simultaneously proposes a method for installing the above-mentioned high-pressure prefabricated beam component of the highway bridge, which comprises the following steps:

[0059] S1. Assemble the support plate assembly; first lay the lower support beam 32 flat on the ground, align the first road plate surface 1 and the second road plate surface 2 and lay them flat on both sides of the lower support beam 32, and then snap-fit ​​the upper support beam 31 and the lower support beam 32 and fix them with bolts to form a central support beam component 3 and preliminarily fix the first road plate surface 1 and the second road plate surface 2; install the left reinforcement component 4 and the right reinforcement component 5 in the same way;

[0060] S2, installation of protective fence; the protective fence 43 is fixedly installed on the left upper beam 41 and the right upper beam 51, and the protective fence or green belt fence can be installed on the upper support beam 31 at the same time;

[0061] S3, support beam assembly installation: excavate the ground foundation, place the support base 9 on the cement foundation and fix it by reinforcing bolts; then place the main support beam 6, the left support beam 7 and the right support beam 8 in the main connection groove 91 and the auxiliary connection groove 92 respectively;

[0062] S4, the support plate assembly cooperates with the support beam assembly; positioning grooves are excavated on the curbs on both sides in advance and hard-formed with cement to place and fix the support plate assembly. The support plate assembly is lifted by a crane and placed in the positioning groove. At the same time, the main support beam 6, the left support beam 7 and the right support beam 8 are fixedly connected to the central beam component 3, the left reinforcement component 4 and the right reinforcement component 5 respectively. The installation is now completed.

[0063] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0064] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high-pressure prefabricated beam component for a highway bridge, characterized in that: It includes a supporting beam assembly and a supporting plate assembly that cooperate with each other. The supporting plate assembly serves as the pavement support surface of the bridge, and forms the pavement after paving cement or asphalt. The supporting beam assembly serves as the center point gravity bearing structure of the bridge, and bears the gravity from the supporting plate assembly and pedestrians and vehicles above it during use; The support plate assembly and the support beam assembly are movably connected, the support plate assembly is used to connect the two ends of the plane road, the support beam assembly is arranged at the center position of the support plate assembly, and the bottom of the support beam assembly is connected to the ground; The support plate assembly comprises a first road plate surface and a second road plate surface of the same structure, a central support beam component, a left reinforcing component and a right reinforcing component, a plurality of reinforcing prefabricated beams are arranged below the first road plate surface and the second road plate surface, the central support beam component is used to connect the first road plate surface and the second road plate surface, the left reinforcing component is arranged on a side edge of the first road plate surface away from the second road plate surface, and the right reinforcing component is arranged on a side edge of the second road plate surface away from the first road plate surface; The support beam assembly comprises a main support beam, a left support beam, a right support beam and a support base, wherein the support base is fixedly connected to the ground, and a main connection groove and a secondary connection groove are provided on the upper surface of the support base, wherein the secondary connection grooves are two in number and are symmetrically arranged on both sides of the main connection groove, the main connection groove is connected to the main support beam, and the secondary connection grooves are respectively connected to the left support beam and the right support beam; One end of the main support beam is connected to the support base, and the other end is connected to the central support beam member; one end of the left support beam is connected to the support base, and the other end is connected to the left reinforcement member; one end of the right support beam is connected to the support base, and the other end is connected to the right reinforcement member; The main support beam improves its coordination with the support base under the pressure of the support plate assembly and the pressure above it.

2. The high-pressure prefabricated beam component for a highway bridge according to claim 1 is characterized in that: Each of the reinforced prefabricated beams is arranged along the length direction of the first highway slab and the second highway slab, and the distance between two adjacent reinforced prefabricated beams is the same.

3. The high-pressure prefabricated beam component for a highway bridge according to claim 2 is characterized in that: The width of the central supporting beam member in the horizontal plane accounts for one fifth to one quarter of the width of the first highway deck.

4. The high-pressure prefabricated beam component for a highway bridge according to claim 3 is characterized in that: The central support beam component includes an upper support beam and a lower support beam that are clipped together. The upper support beam and the lower support beam are locked together by bolts. After the upper support beam and the lower support beam are clipped together, their vertical cross-sections are I-shaped. The first highway slab surface and the second highway slab surface are clipped together on both sides of the central support beam component.

5. The high-pressure prefabricated beam component for a highway bridge according to claim 4, characterized in that: The structures of the left reinforcing component and the right reinforcing component are symmetrical to each other. The left reinforcing component includes a left upper beam and a left lower beam that are snap-fitted to each other, and the right reinforcing component includes a right upper beam and a right lower beam that are snap-fitted to each other. The left upper beam and the left lower beam are locked by bolts, and the right upper beam and the right lower beam are locked by bolts. Protective fences are arranged on the left upper beam and the right upper beam.

6. The high-pressure prefabricated beam component for a highway bridge according to claim 5, characterized in that: The main support beam is provided with an extended clamping portion, which extends toward the left reinforcing member and the right reinforcing member respectively and is clamped with the left lower beam and the right lower beam respectively.

7. The high-pressure prefabricated beam component for a highway bridge according to claim 6, characterized in that: A rotating bearing seat is arranged at the bottom of the main support beam, and the rotating bearing seat can rotate horizontally 360° along the central axis of the main support beam. A first thread is arranged on the outer circumferential side surface of the rotating bearing seat, and a second thread is arranged on the inner circumferential side surface of the main connecting groove, and the first thread and the second thread are meshed with each other.

8. The high-pressure prefabricated beam component for a highway bridge according to claim 7, characterized in that: A plurality of elastic top columns are arranged on the outer circumferential side surface of the rotating bearing seat, and the elastic top columns are arranged at intervals along the spiral direction of the first thread. A plurality of arc grooves are arranged on the inner circumferential side surface of the main connecting groove, and the arc grooves are arranged at intervals along the spiral direction of the second thread. The elastic top columns and the arc grooves cooperate with each other.

9. The high-pressure prefabricated beam component for a highway bridge according to claim 8, characterized in that: The elastic top column is provided with an inclined transition surface.

10. A method for installing a high-pressure prefabricated beam component for a highway bridge as claimed in claim 9, characterized in that: The following steps are involved: S1. Assemble the support plate assembly; first lay the lower support beam flat on the ground, and lay the first road plate surface and the second road plate surface flush on both sides of the lower support beam, and then clamp the upper support beam and the lower support beam together and fix them with bolts to form a central support beam component and preliminarily fix the first road plate surface and the second road plate surface; install the left reinforcement component and the right reinforcement component in the same way; S2. Installation of protective fence: The protective fence is fixedly installed on the left upper beam and the right upper beam, and the protective fence or green belt fence is simultaneously installed on the upper support beam; S3, support beam assembly installation: excavate the ground foundation, place the support base on the cement foundation and fix it by reinforcing bolts; then place the main support beam, left support beam and right support beam in the main connection groove and the auxiliary connection groove respectively; S4. The support plate assembly cooperates with the support beam assembly. Positioning grooves are excavated on the curbs on both sides in advance and hard-formed with cement to place and fix the support plate assembly. The support plate assembly is lifted by a crane and placed in the positioning groove. At the same time, the main support beam, left support beam and right support beam are fixedly connected to the central beam component, the left reinforcement component and the right reinforcement component respectively. The installation is now completed.

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