Load transfer device for bridge system

Abstract

The utility model relates to the technical field of T-beam reinforcement, and discloses a load transfer device for a bridge system, which comprises a transfer mechanism and a support mechanism, the support mechanism is arranged above a cover beam, and the transfer mechanism is fixedly arranged below a bridge deck. By the adoption of the technical scheme, the load sharing efficiency of the bridge deck slab is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of T-beam reinforcement technology, specifically to a load transfer device for bridge systems. Background Technology

[0002] Currently, as the service life of bridges (i.e., the original beams, such as T-beams) increases, the load-bearing capacity of the original beams weakens. New beams are usually added, which can bear part of the vehicle load on the bridge deck borne by the original beams, thus reducing the actual vehicle load on the bridge deck borne by the original beams.

[0003] In the prior art, the invention patent "Bridge Reinforcement Device Based on Load Transfer" with publication number CN110983993A discloses a newly added beam and a support system installed below the newly added beam. The newly added beam can bear a portion of the vehicle load on the bridge deck. The newly added beam, from top to bottom, includes the following components: an upper flange plate, a web plate, and a lower flange plate. The specific load-bearing process of these components is as follows: an upper flange plate, a web plate, and a lower flange plate are installed between adjacent original beams from top to bottom, and a support system is installed below the newly added beam, thereby reducing the actual vehicle load on the bridge deck borne by the original beams. The original beam can be a T-beam, and the upper flange plate, web plate, and lower flange plate of the newly added beam form an I-beam (hereinafter referred to as an I-beam).

[0004] However, although a portion of the bridge deck load can be shared by the original beams (e.g., T-beams) and the newly added beams (e.g., I-beams), it still cannot significantly (i.e., it cannot effectively distribute) the bridge deck load and reduce the burden on the bridge deck. In other words, the efficiency of the newly added beams in sharing the bridge deck load is relatively low.

[0005] Therefore, there is an urgent need for a load transfer device for bridge systems that can effectively distribute the load on the bridge deck, thereby greatly improving the load-sharing efficiency of the bridge deck. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides a load transfer device for bridge systems. Firstly, the first transfer component of the transfer mechanism enables the initial transfer of the bridge deck load. Secondly, the second transfer component of the transfer mechanism can share the bridge deck load borne by the first transfer component, thus achieving a secondary transfer of the bridge deck load. It is precisely because the second transfer component is added based on the first transfer component that the effective transfer of the bridge deck load is achieved, greatly improving the efficiency of bridge deck load transfer.

[0007] This utility model provides a load transfer device for a bridge system, characterized in that it includes: a transfer mechanism disposed between multiple T-beams for transferring the load of the bridge deck, a support mechanism fixedly disposed below the transfer mechanism for supporting the transfer mechanism, the support mechanism being fixedly disposed above the pad stone, and the transfer mechanism being fixedly disposed below the bridge deck;

[0008] The transfer mechanism includes multiple transfer components, each of which includes a first transfer component and a pair of second transfer components symmetrically arranged on both sides of the first transfer component;

[0009] The first transfer assembly includes an upper chord fixedly disposed below the bridge deck, a lower chord fixedly disposed above the support mechanism, and a vertical rod fixedly disposed between the upper chord and the lower chord;

[0010] The second transfer assembly includes an upper node plate fixedly disposed on one side of the upper chord, a lower node plate fixedly disposed on one side of the lower chord, and a web member fixedly disposed between the upper node plate and the lower node plate;

[0011] The vertical rod and the upper chord are fixedly connected, and the vertical rod and the lower node plate are fixedly connected;

[0012] The support mechanism includes a self-adjusting slope mechanism disposed below the support mechanism, and a lifting mechanism for lifting the self-adjusting slope mechanism fixedly disposed below the self-adjusting slope mechanism.

[0013] The self-adjusting slope mechanism includes an adjusting slope steel plate, a support bearing steel plate, a support, a sliding plate, and a support groove arranged sequentially from top to bottom. The bottom of the adjusting slope steel plate is provided with a spherical protrusion, the top of the support bearing steel plate is provided with a spherical groove adapted to the spherical protrusion, the support is provided at the bottom of the support bearing steel plate, the sliding plate is provided at the bottom of the support, and the sliding plate is located in the support groove adapted to the sliding plate.

[0014] The lifting mechanism includes a lifting steel plate fixedly installed below the support slide groove, leveling bolts passing through the four corners of the lifting steel plate, limiting nuts installed below the leveling bolts to limit the height of the lifting steel plate, and jacks installed in the cavity between the pad stone and the lifting steel plate to lift the lifting steel plate upward. The leveling bolts are installed inside the pad stone.

[0015] The above-mentioned load transfer device for a bridge system is characterized in that: the bridge deck and the upper chord are fixedly connected by shear studs, the upper chord and the upper node plate are fixedly connected by a first connecting assembly, and the upper node plate and the web member are connected by fixing screws;

[0016] The web member and the lower node plate are connected by the fixing screw, and the lower node plate and the lower chord are connected by the fixing screw.

[0017] The load transfer device for a bridge system described above is characterized in that the angle between the centerline of the web member and the centerline of the lower chord member ranges from [20° to 80°], where 20° is the lower limit of the angle and 80° is the upper limit of the angle.

[0018] The above-mentioned load transfer device for a bridge system is characterized in that: the first connecting component includes an upper pad steel plate disposed below the upper chord, a pair of L-shaped steel plates vertically symmetrically disposed on both sides of the upper pad steel plate and fixedly connected to the upper pad steel plate by the shear studs, the L-shaped steel plates and the upper node plate are fixedly connected by the first screw, the upper node plate and the web member are connected by the second screw, and the upper node plate and the upper pad steel plate are fixedly connected by the third screw.

[0019] The load transfer device for a bridge system described above is characterized in that: the vertical rod and the upper chord are connected by the second screw, and the vertical rod and the lower node plate are connected by the second screw.

[0020] The load transfer device for a bridge system described above is characterized in that: the first screw includes a limiting screw, the second screw includes a fixing screw, and the third screw includes a thrust screw.

[0021] The beneficial effects are analyzed and reasoned as follows:

[0022] In existing technologies, although a portion of the bridge deck load can be shared by the original and newly added beams, it still cannot significantly reduce the load on the bridge deck. In other words, the efficiency of the newly added beams in sharing the bridge deck load is relatively low.

[0023] The technical solution provided by this utility model includes: First, a first transfer assembly is set below the bridge deck. Specifically, an upper chord, a vertical member, and a lower chord can be sequentially set below the bridge deck. Second, a pair of second transfer assemblies are symmetrically set on both sides of the first transfer assembly. Specifically, an upper node plate can be set on one side of the upper chord, and then a web member and a lower node plate can be sequentially set below the upper node plate. The lower node plate is set on one side of the lower chord. It should be noted that the upper node plate is on one side of the upper chord, and the lower node plate is on one side of the lower chord; both sides are on the same side. Third, a support mechanism is set below the lower chord. Specifically, a self-adjusting slope mechanism and a lifting mechanism can be sequentially set below the lower chord. Fourth, a pad stone and a cap beam are sequentially set below the lifting mechanism.

[0024] Because a pair of second transfer components are symmetrically arranged on one side of the first transfer component, firstly, the T-beam and the first transfer component can bear the bridge deck load. Secondly, the second transfer components can share the bridge deck load borne by the first transfer component, thereby reducing the burden on the bridge deck. In other words, the first and second transfer components can jointly bear the bridge deck load.

[0025] Therefore, the technical solution of this utility model greatly improves the load-sharing efficiency of bridge deck. Attached Figure Description

[0026] Figure 1 A transverse schematic diagram of a load transfer device for a bridge system provided by this utility model;

[0027] Figure 2 for Figure 1 A schematic diagram along the bridge showing the rightmost transfer mechanism and the support mechanism located below;

[0028] Figure 3 for Figure 2 Enlarged structural diagram of the upper chord, upper node plate, and web;

[0029] Figure 4 for Figure 2 Enlarged structural diagram of the middle and lower chord, lower node plate, vertical members, and web members;

[0030] Figure 5 A schematic diagram of the self-adjusting slope mechanism and the lifting mechanism located below it when concrete is not poured into the cavity between the lifting steel plate and the pad stone.

[0031] Figure 6 for Figure 5 A schematic diagram of the structure after concrete has been poured into the cavity between the lifting steel plate and the pad stone;

[0032] Figure 7 for Figure 3 Longitudinal sectional view along the middle II-II direction;

[0033] Figure label:

[0034] Upper chord 1; Lower chord 2; Vertical member 3;

[0035] Upper node plate 4; Lower node plate 5; Web member 6;

[0036] 7. Slope adjusting steel plate; 8. Bearing steel plate for support; 9. Support;

[0037] 10. Slide plate; 11. Support groove; 12. Lifting steel plate;

[0038] 13 leveling bolts; 14 limit nuts; 15 jacks;

[0039] 16 shear studs; 17 fixing screws; 18 upper steel plate;

[0040] L-shaped steel plate 19; First screw 20; Second screw 21;

[0041] Third screw 22; Bridge deck 23; T-beam 24;

[0042] 25 for the cap beam; 26 for the foundation stone. Detailed Implementation

[0043] The present invention will now be described in further detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0044] It should be noted that, where there is no conflict, the features of the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the embodiments and accompanying drawings.

[0045] In existing technologies, although a portion of the bridge deck load can be shared by the original beams (e.g., T-beams) and the newly added beams (e.g., I-beams), it still cannot significantly (i.e., it cannot effectively share) the bridge deck load and reduce the burden on the bridge deck. In other words, the efficiency of the newly added beams in sharing the bridge deck load is low.

[0046] Based on this, the present invention provides a load transfer device for a bridge system. Firstly, the first transfer component of the transfer mechanism can achieve the initial transfer of the bridge deck load. Secondly, the second transfer component of the transfer mechanism can share the bridge deck load borne by the first transfer component, that is, achieve a secondary transfer of the bridge deck load. It is precisely because the second transfer component is set up based on the first transfer component that the effective transfer of the bridge deck load is achieved, greatly improving the transfer efficiency of the bridge deck load.

[0047] Figure 1 This is a transverse schematic diagram of a load transfer device for a bridge system provided by this utility model. Figure 2 for Figure 1 A schematic diagram along the bridge showing the rightmost transfer mechanism and the support mechanism located below. Figure 3 for Figure 2 Enlarged structural diagram of the upper chord, upper node plate, and web. Figure 4 for Figure 2 Enlarged structural diagram of the lower chord, lower node plate, vertical members, and web members. Figure 5 This is a schematic diagram of the self-adjusting slope mechanism and the jacking mechanism located below it, without concrete being poured into the cavity between the lifting steel plate and the pad stone. Figure 6 for Figure 5 A schematic diagram of the structure after concrete has been poured into the cavity between the lifting steel plate and the pad stone. Figure 7 for Figure 3 Longitudinal sectional view along the II-II direction.

[0048] Combination Figure 1 and Figure 2 The present invention provides a load transfer device for a bridge system, comprising: a transfer mechanism disposed between multiple T-beams 24 for transferring the load of a bridge deck 23; a support mechanism fixedly disposed below the transfer mechanism for supporting the transfer mechanism; the support mechanism being fixedly disposed above a pad stone 26; and the transfer mechanism being fixedly disposed below the bridge deck 23.

[0049] The transfer mechanism includes multiple transfer components, each of which includes a first transfer component and a pair of second transfer components symmetrically arranged on both sides of the first transfer component;

[0050] The first transfer assembly includes an upper chord 1 fixedly disposed below the bridge deck 23, a lower chord 2 fixedly disposed above the support mechanism, and a vertical bar 3 fixedly disposed between the upper chord 1 and the lower chord 2.

[0051] The second transfer assembly includes an upper node plate 4 fixedly disposed on one side of the upper chord 1, a lower node plate 5 fixedly disposed on one side of the lower chord 2, and a web member 6 fixedly disposed between the upper node plate 4 and the lower node plate 5.

[0052] The vertical rod 3 is fixedly connected to the upper chord 1, and the vertical rod 3 is fixedly connected to the lower node plate 5.

[0053] The support mechanism includes a self-adjusting slope mechanism located below the support mechanism, and a lifting mechanism fixedly located below the self-adjusting slope mechanism for lifting the self-adjusting slope mechanism.

[0054] The self-adjusting slope mechanism includes an adjusting slope steel plate 7, a support bearing steel plate 8, a support 9, a sliding plate 10, and a support groove 11 arranged sequentially from top to bottom. The bottom of the adjusting slope steel plate 7 is provided with a spherical protrusion, the top of the support bearing steel plate 8 is provided with a spherical groove that matches the spherical protrusion, the bottom of the support bearing steel plate 8 is provided with a support 9, the bottom of the support 9 is provided with a sliding plate 10, and the sliding plate 10 is located in the support groove 11 that matches the sliding plate 10.

[0055] The lifting mechanism includes a lifting steel plate 12 fixedly installed below the support slide groove 11, leveling bolts 13 passing through the four corners of the lifting steel plate 12, a limiting nut 14 installed below the leveling bolts 13 to limit the height of the lifting steel plate 12, and a jack 15 installed in the cavity between the pad stone 26 and the lifting steel plate 12 to lift the lifting steel plate 12 upward. The leveling bolts 13 are installed inside the pad stone 26.

[0056] In the lifting mechanism, when the jack 15 is working, it can lift the lifting steel plate 12 upward, thereby causing the upper chord 1 (belonging to the first transfer component) to move upward. The top of the upper chord 1 is against the bottom of the bridge deck 23. When the lifting force reaches the required level, the height of the lifting steel plate 12 can be fixed by the limit nut 14 to ensure the stability of the upward lifting force.

[0057] Furthermore, when the vehicle travels on the bridge deck 23, the transfer mechanism will be subjected to downward pressure (i.e., bridge deck load). As mentioned above, the lifting mechanism has an upward lifting force on the transfer mechanism. The lifting force and pressure are balanced. Since the transfer mechanism includes a second transfer component, the second transfer component can reduce the pressure on the first transfer component and share the bridge deck load borne by the first transfer component, which greatly improves the bridge deck load sharing efficiency.

[0058] In the self-adjusting slope mechanism, when the vehicle applies downward pressure to the bridge deck 23, the spherical protrusion at the bottom of the slope-adjusting steel plate 7 can rotate 360° in the spherical groove at the bottom of the bearing steel plate 8. For example, the spherical protrusion of the slope-adjusting steel plate 7 can automatically deflect as the force changes, thereby making the bearing steel plate 8 uniformly stressed.

[0059] In the self-adjusting slope mechanism, when the vehicle applies downward pressure to the bridge deck 23, causing the slope of the bridge deck 23 to change to a certain extent, the slide plate 10 located below it (i.e., the bridge deck 23) is in close contact with the support 9. There is a sliding gap between the slide plate 10 and the support groove 11 located on the outer periphery of the slide plate 10. The slide plate 10 can slide within the gap (e.g., slide forward, backward, left, and right) until it slides to the part to be supported, thereby supporting the bridge deck 23.

[0060] Alternatively, silicone grease can be used instead of silicone grease, as long as the skateboard 10 can slide in the support groove 11.

[0061] Optionally, the bearing steel plate 8 and the support 9 can be independent components or integrated components, depending on the actual situation.

[0062] In practice, firstly, a support mechanism (specifically a self-adjusting slope mechanism and a lifting mechanism) is installed on the pad stone 26.

[0063] Secondly, a first transfer component and part of a second transfer component (specifically, a lower node plate 5) are installed above the self-adjusting slope mechanism. For example, the upper chord 1 can be fixedly set (e.g., by shear studs) below the bridge deck 23, and then a vertical rod 3 is welded to the lower surface of the upper chord 1. Then, the lower node plate 5 is welded below the vertical rod 3, and the lower chord 2 is welded to one side of the lower node plate 5. Finally, the lower chord 2 and the support mechanism (specifically, the slope-adjusting steel plate 7) are fixedly connected.

[0064] Third, install the remaining second transfer assembly on the first transfer assembly. First, install an upper node plate 4 on one side of the upper chord 1, then symmetrically install a pair of web members 6 below the upper node plate 6, and then connect the pair of web members 6 and the lower node plate 5. It can be understood that the lower node plate 5 is installed on one side of the lower chord 2.

[0065] It is understandable that the upper node plate 4 is set on one side of the upper chord 1 (referred to as the first side), and the lower node plate 5 is set on one side of the lower chord 2 (referred to as the second side). The first side and the second side mentioned above are the same side.

[0066] The beneficial effects are analyzed and reasoned as follows:

[0067] In existing technologies, although a portion of the bridge deck load can be shared by the original beams (e.g., T-beams) and the newly added beams (e.g., I-beams), it still cannot significantly (i.e., it cannot effectively share) the bridge deck load and reduce the burden on the bridge deck. In other words, the efficiency of the newly added beams in sharing the bridge deck load is low.

[0068] The technical solution provided by this utility model includes the following: First, a first transfer assembly is set below the bridge deck. Specifically, an upper chord 1, a vertical member 3, and a lower chord 2 can be sequentially set below the bridge deck. Second, a pair of second transfer assemblies are symmetrically set on both sides of the first transfer assembly. Specifically, an upper node plate 4 can be set on one side of the upper chord 1, and then a web member 6 and a lower node plate 5 can be sequentially set below the upper node plate 4. The lower node plate 5 is located on one side of the lower chord 2. It should be noted that the upper node plate 4 is on one side of the upper chord 1, and the lower node plate 5 is on one side of the lower chord 5; both sides are on the same side. Third, a support mechanism is set below the lower chord 5. Specifically, a self-adjusting slope mechanism and a lifting mechanism can be sequentially set below the lower chord 5. Fourth, a pad stone 26 and a cap beam 25 are sequentially set below the lifting mechanism.

[0069] It is precisely because a pair of second transfer components are symmetrically arranged on one side of the first transfer component that, firstly, the T-beam 24 and the first transfer component can bear the bridge deck load. Secondly, the second transfer components can share the bridge deck load borne by the first transfer component, thereby reducing the burden on the bridge deck. In other words, the first and second transfer components can jointly bear the bridge deck load.

[0070] Therefore, the technical solution of this utility model greatly improves the load-sharing efficiency of bridge deck.

[0071] The embodiments described above introduce a load transfer device for a bridge system. In another embodiment of this utility model, the specific connection method between the bridge deck 23, the first transfer component, and the second transfer component is described.

[0072] For example, the bridge deck 23 and the upper chord 1 are fixedly connected by shear studs 16, the upper chord 1 and the upper node plate 4 are fixedly connected by the first connecting assembly, and the upper node plate 4 and the web member 6 are connected by fixing screws 17.

[0073] The web member 6 and the lower node plate 5 are connected by fixing screws 17, and the lower node plate 5 and the lower chord member 2 are connected by fixing screws 17.

[0074] The upper chord 1 and the upper node plate 4 are fixedly connected by the first connecting assembly, and the lower node plate 5 and the lower chord 2 are fixedly connected by the fixing screw 17. Although the connection relationship between the chord and the node plate is different here, the purpose is to connect the chord, the web member 6 and the node plate so that the web member 6 (belonging to the second connecting assembly) can share the bridge deck load borne by the chord (belonging to the first connecting assembly).

[0075] In practice, firstly, the upper chord 1 can be connected to the bridge deck 23 via shear studs 16. Secondly, the upper node plate 4 is connected to one side of the upper chord 1 via a first connecting assembly. Thirdly, the upper node plate 4 and the web member 6 are connected via fixing screws 17.

[0076] The embodiments described above illustrate the specific connection methods between the bridge deck, the first transfer assembly, and the second transfer assembly. In another embodiment of this invention, the relative positional relationship between the web member 6 and the lower chord member 2 is described.

[0077] For example, the angle between the centerline of the web member 6 and the centerline of the lower chord member 2 ranges from [20° to 80°], where 20° is the lower limit of the angle and 80° is the upper limit of the angle.

[0078] Preferably, the load-bearing capacity of the web member 6 is better when the included angle is 45°.

[0079] In practice, when installing the web member 6 onto the lower chord 2, the angle between the web member 6 and the lower chord 2 can be adjusted to a suitable angle (e.g., 45°) before proceeding with the subsequent installation.

[0080] The preceding embodiments described the relative positional relationship between the web member 6 and the lower chord member 2. In another embodiment of this invention, the specific structure of the first connecting assembly is described.

[0081] For example, the first connecting assembly includes an upper pad steel plate 18 disposed below the upper chord 1, a pair of L-shaped steel plates 19 vertically symmetrically disposed on both sides of the upper pad steel plate 18 and fixedly connected to the upper pad steel plate 18 by shear studs 16, the L-shaped steel plates 19 and the upper node plate 4 being fixedly connected by a first screw 20, the upper node plate 4 and the web member 6 being connected by a second screw 21, and the upper node plate 4 and the upper pad steel plate 18 being fixedly connected by a third screw 22.

[0082] The upper chord 1 and the upper node plate 4 are connected by an upper steel plate 18, shear studs 16, an L-shaped steel plate 19, a first screw 20, and a third screw 22. It can be understood that the above components belong to the first connecting assembly, and their purpose is to connect the upper chord 1 and the upper node plate 4.

[0083] The specific structure of the first connecting component was described in the embodiments described above. In another embodiment of this utility model, the specific connection relationship between the vertical rod 3, the upper chord rod 1, and the lower node plate 5 is described.

[0084] For example, the vertical rod 3 and the upper chord rod 1 are connected by the second screw 21, and the vertical rod 3 and the lower node plate 5 are connected by the second screw 21.

[0085] The upper end of the vertical member 3 is connected to the chord member 2, and the lower end is connected to the node plate. The purpose is to connect the first transfer assembly (including the vertical member 3 and the upper chord member 1) and the second transfer assembly (including the node plate, for example, the lower node plate 5), so that the second transfer assembly can share the bridge deck load borne by the first transfer assembly.

[0086] In practice, firstly, a first transfer assembly (specifically including an upper chord 1 and a vertical member 3) can be installed below the bridge deck 23. Secondly, a lower node plate 5 can be installed on one side of the lower end of the vertical member 3, thereby completing the connection between the first transfer assembly and the second transfer assembly.

[0087] The embodiments described above illustrate the specific connection relationships between the vertical rod 3, the upper chord 1, and the lower node plate 5. In another embodiment of this invention, the specific types of the first screw 20, the second screw 21, and the third screw 22 are described.

[0088] For example, the first screw 20 includes a limit screw, the second screw 21 includes a fixing screw, and the third screw 22 includes a thrust screw.

[0089] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0090] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A load transfer device for a bridge system, the bridge system comprising a bridge deck (23), a plurality of T-beams (24) disposed below the bridge deck (23) for bearing the load of the bridge deck (23), a cap beam (25) disposed below the plurality of T-beams (24) for transferring the load of the bridge deck (23) to the ground, wherein a pad stone (26) for installing the load transfer device is cast above the cap beam (25), characterized in that: include: A transfer mechanism for transferring the load of the bridge deck (23) is provided between multiple T-beams (24), and a support mechanism for supporting the transfer mechanism is fixedly provided below the transfer mechanism. The support mechanism is fixedly provided above the pad stone (26), and the transfer mechanism is fixedly provided below the bridge deck (23). The transfer mechanism includes multiple transfer components, each of which includes a first transfer component and a pair of second transfer components symmetrically arranged on both sides of the first transfer component; The first transfer assembly includes an upper chord (1) fixedly disposed below the bridge deck (23), a lower chord (2) fixedly disposed above the support mechanism, and a vertical rod (3) fixedly disposed between the upper chord (1) and the lower chord (2). The second transfer assembly includes an upper node plate (4) fixedly disposed on one side of the upper chord (1), a lower node plate (5) fixedly disposed on one side of the lower chord (2), and a web member (6) fixedly disposed between the upper node plate (4) and the lower node plate (5). The vertical rod (3) and the upper chord rod (1) are fixedly connected, and the vertical rod (3) and the lower node plate (5) are fixedly connected; The support mechanism includes a self-adjusting slope mechanism disposed below the support mechanism, and a lifting mechanism for lifting the self-adjusting slope mechanism fixedly disposed below the self-adjusting slope mechanism. The self-adjusting slope mechanism includes an adjusting slope steel plate (7), a support bearing steel plate (8), a support (9), a sliding plate (10), and a support groove (11) arranged sequentially from top to bottom. The bottom of the adjusting slope steel plate (7) is provided with a spherical protrusion. The top of the support bearing steel plate (8) is provided with a spherical groove that matches the spherical protrusion. The bottom of the support bearing steel plate (8) is provided with the support (9). The bottom of the support (9) is provided with the sliding plate (10). The sliding plate (10) is located in the support groove (11) that matches the sliding plate (10). The lifting mechanism includes a lifting steel plate (12) fixedly installed below the support slide groove (11), leveling bolts (13) passing through the four corners of the lifting steel plate (12), a limiting nut (14) installed below the leveling bolts (13) to limit the height of the lifting steel plate (12), and a jack (15) installed in the cavity between the pad stone (26) and the lifting steel plate (12) to lift the lifting steel plate (12) upward. The leveling bolts (13) are installed inside the pad stone (26).

2. The load transfer device for a bridge system according to claim 1, characterized in that: The bridge deck (23) and the upper chord (1) are fixedly connected by shear studs (16), the upper chord (1) and the upper node plate (4) are fixedly connected by a first connecting assembly, and the upper node plate (4) and the web member (6) are connected by fixing screws (17). The web member (6) and the lower node plate (5) are connected by the fixing screw (17), and the lower node plate (5) and the lower chord member (2) are connected by the fixing screw (17).

3. A load transfer device for a bridge system according to claim 2, characterized in that: The angle between the centerline of the web member (6) and the centerline of the lower chord member (2) ranges from [20° to 80°], where 20° is the lower limit of the angle and 80° is the upper limit of the angle.

4. A load transfer device for a bridge system according to claim 2, characterized in that: The first connecting assembly includes an upper pad steel plate (18) disposed below the upper chord (1), a pair of L-shaped steel plates (19) vertically symmetrically disposed on both sides of the upper pad steel plate (18) and fixedly connected to the upper pad steel plate (18) by the shear studs (16), the L-shaped steel plates (19) and the upper node plate (4) being fixedly connected by the first screw (20), the upper node plate (4) and the web member (6) being connected by the second screw (21), and the upper node plate (4) and the upper pad steel plate (18) being fixedly connected by the third screw (22).

5. A load transfer device for a bridge system according to claim 4, characterized in that: The vertical rod (3) and the upper chord rod (1) are connected by the second screw (21), and the vertical rod (3) and the lower node plate (5) are connected by the second screw (21).

6. A load transfer device for a bridge system according to claim 5, characterized in that: The first screw (20) includes a limiting screw, the second screw (21) includes a fixing screw, and the third screw (22) includes a thrust screw.

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