Fabricated durable and high-toughness steel-UHPC (Ultra High Performance Concrete) combined truss girder structure

Abstract

The utility model belongs to the technical field of bridges, and particularly relates to an assembly type durable and high-toughness steel-UHPC (Ultra High Performance Concrete) combined truss girder structure which comprises cross beams and supporting rods, a connecting mechanism is arranged on the cross beam, the connecting mechanism comprises a fixing seat, the fixing seat is fixedly connected to the cross beam, the left side and the right side of the fixing seat are each provided with two sets of inserting holes, inserting blocks are inserted into the inserting holes, the inserting blocks are clamped with clamping blocks, and the sides, away from the inserting blocks, of the clamping blocks make contact with abutting blocks. The bottom end of the abutting block is fixedly connected with a connecting block, the connecting block is fixedly connected with a first moving block, the first moving block is in threaded connection to a lead screw, the left side of the lead screw is rotationally connected to the inner wall of the second cavity, and the right side of the second cavity is fixedly connected with a rotating block. And through the structural design of the connecting mechanism, the function that the cross beam and the supporting rod are conveniently mounted, fixed and dismounted is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridges, in particular to an assembled durable, high-toughness steel-UHPC composite truss beam structure. Background Art

[0002] With the rapid development of cities, in order to improve the traffic capacity of urban road networks and ensure the convenience of pedestrians crossing the street, the construction of urban pedestrian overpasses is increasing. Traditional pedestrian overpasses are mostly built with steel truss structures. However, as time goes by, steel trusses are prone to corrosion and rust, resulting in a decrease in the stiffness of chords and beams, a decrease in bearing capacity, and high subsequent operation and maintenance costs. Therefore, in order to solve the corrosion and rust defects of steel truss structures in bridge applications, a material combining steel and ultra-high performance concrete is usually used. Ultra-high performance concrete has the characteristics of light weight, high strength, high durability, and corrosion resistance. It can effectively solve the high-cost maintenance problem of the upper truss structure of urban pedestrian overpasses. At the same time, UHPC components have beautiful appearance and can become a new landscape in the city after completion.

[0003] According to the patent document: CN202222846959.X, a water-leakage-proof truss beam structure is proposed, supporting trusses and bridge deck assemblies; the bridge deck assembly includes a plurality of bridge decks, and the plurality of bridge decks are evenly laid on the bridge deck of the supporting trusses along the lateral intervals of the supporting trusses; semi-circular arc grooves are respectively provided on both lateral sides of the bridge deck; when the plurality of bridge decks are laid on the supporting trusses, two adjacent semi-circular arc grooves form a filling groove, and the filling groove is used to fill waterproof materials. Therefore, the present application provides the filling grooves in the gaps between the plurality of bridge decks, and the filling grooves are filled with waterproof materials, so that under the obstruction of the waterproof materials, rainwater cannot flow from the gaps between the plurality of bridge decks to the bottom of the bridge deck, so that pedestrians can take shelter under the bridge deck.

[0004] However, in the above-mentioned technology, a waterproof truss beam structure inevitably needs to be connected by screws during the installation and disassembly of the supporting truss, and there are generally many screw holes on the supporting truss, which makes the assembly or disassembly process more cumbersome; therefore, in view of the above-mentioned problem, an assembled durable and high-toughness steel-UHPC composite truss beam structure is proposed. Utility Model Content

[0005] In order to make up for the shortcomings of the prior art, a water-leakage-proof truss beam structure in the above technology inevitably needs to be connected by screws during the installation and disassembly of the supporting truss, and there are generally many screw holes on the supporting truss, which will be more cumbersome during the assembly or disassembly process. The utility model proposes an assembled durable and high-toughness steel-UHPC composite truss beam structure.

[0006] The technical solution adopted by the utility model to solve its technical problems is: the utility model describes an assembled durable, high-toughness steel-UHPC composite truss beam structure, comprising a crossbeam and a support rod; a connecting mechanism is arranged on the crossbeam, the connecting mechanism comprises a fixing seat, the fixing seat is fixedly connected to the crossbeam, two groups of jacks are provided on the left and right sides of the fixing seat, an insert block is inserted inside the insert block, the insert block is engaged with a card block, a side of the card block away from the insert block is in contact with an abutment block, a connecting block is fixedly connected to a first moving block at the bottom end of the abutment block, the first moving block is threadedly connected to a screw rod, the left side of the screw rod is rotatably connected to the inner wall of a second cavity, a rotating block is fixedly connected to the right side of the second cavity, a first cavity is provided inside the fixing seat, and the insert block is fixedly connected to the bottom end of the support rod.

[0007] Preferably, threads with opposite rotation directions are provided on the left and right sides of the screw rod, a one-way thread is provided in the middle of the screw rod, second moving blocks are threadedly connected on the left and right sides of the screw rod, and a protrusion is fixedly connected to the top of the second moving block.

[0008] Preferably, the rotating block is rotatably connected inside the notch, and the notch is opened at the bottom end of the crossbeam.

[0009] Preferably, the connecting block is slidably connected to the inside of the through groove, the through groove is communicated with the second cavity and the first cavity, a second limiting groove is provided on the inner wall of the through groove, a second limiting block is slidably connected to the inside of the second limiting groove, and the second limiting block is fixedly connected to the connecting block.

[0010] Preferably, a cushion block is fixedly connected to the inner wall of the second limiting groove, and the cushion block is made of rubber material.

[0011] Preferably, a fixing ring is sleeved on both the left and right sides of the screw rod, and the top of the fixing ring is fixedly connected to the inner wall of the second cavity.

[0012] Preferably, first limiting blocks are fixedly connected to both the front and rear sides of the abutting block, the first limiting blocks are slidably connected to the inside of the first limiting groove, and the first limiting groove is provided on the inner wall of the first cavity.

[0013] Preferably, a threaded hole is provided at the top of the abutment block, and the abutment block is threadedly connected to a fixing screw.

[0014] Preferably, two groups of slide grooves are provided on the bottom end of the inner wall of the first cavity, a slider is slidably connected inside the slide groove, a connecting rod is fixedly connected to the top of the slider, the slider is fixedly connected to a spring, and the side of the spring away from the slider is fixedly connected to the inner wall of the slide groove.

[0015] Preferably, the protrusion is designed to be L-shaped, the top end of the protrusion is inserted into the inside of the groove, and the groove is opened on the left and right sides of the fixing seat.

[0016] The utility model is beneficial in that:

[0017] 1. The utility model realizes the function of facilitating installation, fixing and disassembly between the crossbeam and the support rod through the structural design of the connection mechanism, and solves the problem that a water-leakage-proof truss beam structure in the above-mentioned technology inevitably needs to be connected by screws during the installation and disassembly process, and there are generally many screw holes on the support truss, which will be more cumbersome during the assembly or disassembly process;

[0018] 2. The utility model adopts the structural design of the spring, the slide groove, the slider and the connecting rod. When the card block is not in contact with the abutment block, the elastic force of the spring can drive the card block to return to its original position and store the card block into the first cavity, so as to release the abutment between the card block and the plug-in block, making the disassembly process more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the connection mechanism of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the plug-in block of the utility model;

[0023] Figure 4 It is a schematic diagram of the structure inside the first cavity of the utility model;

[0024] Figure 5 It is a schematic diagram of the connection structure of the clamping block and the sliding block of the utility model.

[0025] In the figure: 1, cross beam; 20, support rod; 21, fixed seat; 23, plug block; 25, socket; 26, clamp block; 27, abutment block; 28, first cavity; 29, through groove; 30, connecting block; 31, first moving block; 32, screw rod; 33, second cavity; 34, second moving block; 35, rotating block; 36, notch; 37, fixing ring; 38, first limiting block; 39, first limiting groove; 40, second limiting block; 41, cushion block; 42, spring; 43, slide groove; 44, slider; 45, connecting rod; 46, protrusion; 47, groove; 48, fixing screw; 49, second limiting groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1 - Figure 5 As shown, an assembled durable, high-toughness steel-UHPC composite truss beam structure includes a crossbeam 1 and a support rod 20; a connecting mechanism is provided on the crossbeam 1, and the connecting mechanism includes a fixing seat 21, and the fixing seat 21 is welded and fixed on the crossbeam 1. Two groups of plug holes 25 are opened on the left and right sides of the fixing seat 21. The two groups of plug holes 25 are asymmetrically designed and staggered. The inside of the plug hole 25 is inserted with an insert block 23, and the insert block 23 is engaged with a clamping block 26. The clamping block 26 is designed in a trapezoidal shape. The side of the clamping block 26 away from the plug block 23 contacts the abutment block 27, the bottom end of the abutment block 27 is welded and fixed with a connection block 30, the connection block 30 and the first moving block 31 are fixed by welding, the first moving block 31 is threadedly connected to the screw rod 32, the left side of the screw rod 32 is rotatably connected to the inner wall of the second cavity 33, and a rotating block 35 is welded and fixed on the right side of the second cavity 33, the interior of the fixed seat 21 is provided with a first cavity 28, and the plug block 23 is fixedly connected to the bottom end of the support rod 20;

[0028] During operation, a water-leakage-proof truss beam structure in the above-mentioned technology inevitably needs to be connected by screws during the installation and disassembly of the support truss, and there are generally many screw holes on the support truss, which will be more cumbersome during the assembly or disassembly process. The structural design of the connecting mechanism realizes the function of facilitating the installation, fixing and disassembly between the cross beam 1 and the support rod 20. When the cross beam 1 and the support rod 20 are to be installed, first align the plug block 23 fixed on the bottom end of the support rod 20 with the plug hole 25 opened on the fixing seat 21 and insert it until the plug block 23 and the fixing seat 21 are in contact. At this time, the screw rod 32 inside the second cavity 33 is driven to rotate by rotating the rotating block 35, and the first moving block 31 threadedly connected on the screw rod 32 will be in the screw rod 3 2, the first moving block 31 is connected together with the bottom end of the abutting block 27 through the connecting block 30, so it will drive the abutting block 27 to move inside the first cavity 28 until the abutting block 27 moves to the maximum limit. At this time, there will be two sets of card blocks 26 abutting on one side of the abutting block 27, and the abutting block 27 will push the card block 26 to move to both sides during the abutting process with the card block 26, so that the card block 26 is engaged and fixed with the plug block 23. At this point, the installation operation of the beam 1 and the support rod 20 is completed. Similarly, when the beam 1 and the support rod 20 are to be disassembled, it is only necessary to rotate the rotating block 35 in the opposite direction again, wherein the first cavity 28 is opened inside the fixing seat 21, the bottom end of the fixing seat 21 is fixed on the beam 1 by welding, and the second cavity 33 is opened inside the beam 1.

[0029] Furthermore, threads with opposite rotation directions are provided on the left and right sides of the screw rod 32, a one-way thread is provided in the middle of the screw rod 32, and second moving blocks 34 are threadedly connected on the left and right sides of the screw rod 32, and a protrusion 46 is welded and fixed on the top of the second moving block 34;

[0030] During operation, threads with opposite rotation directions are provided on both sides of the screw rod 32, so that during the rotation of the screw rod 32, the second movable blocks 34 threadedly connected on both sides of the screw rod 32 can move toward each other, thereby driving the protrusions 46 fixed on the second movable blocks 34 to approach each other until the protrusions 46 and the bottom ends of the plug blocks 23 contact, so that the connection between the support rod 20 and the crossbeam 1 can be made more secure through the abutment between the protrusions 46 and the plug blocks 23.

[0031] Furthermore, the rotating block 35 is rotatably connected to the inside of the notch 36, and the notch 36 is provided at the bottom end of the beam 1;

[0032] During operation, the rotating block 35 rotates in the notch 36 , so that the rotating block 35 can be rotated through the notch 36 . Meanwhile, the rotating block 35 being received in the notch 36 can also reduce the interference of external factors on the rotating block 35 .

[0033] Furthermore, the connecting block 30 is slidably connected to the inside of the through slot 29. The through slot 29 is designed to be a long rectangle. The through slot 29 is connected to the second cavity 33 and the first cavity 28. A second limiting groove 49 is provided on the inner wall of the through slot 29. A second limiting block 40 is slidably connected to the inside of the second limiting groove 49. The second limiting block 40 is welded and fixed to the connecting block 30.

[0034] During operation, the first cavity 28 and the second cavity 33 are connected together through the through groove 29. During the movement of the abutment block 27, the second limit block 40 fixed on the connecting block 30 will also slide in the second limit groove 49, thereby guiding the first moving block 31 when it moves on the screw rod 32 through the contact between the second limit block 40 and the inner wall of the second limit groove 49.

[0035] Furthermore, a cushion block 41 is glued and fixed on the inner wall of the second limiting groove 49, and the cushion block 41 is made of rubber material;

[0036] During operation, the cushion block 41 is made of rubber material and is used to provide a buffer between the second limit block 40 and the inner wall of the second limit groove 49 to prevent the second limit block 40 from abutting against the inner wall of the second limit groove 49 after moving to the maximum position in the second limit groove 49 .

[0037] Furthermore, a fixing ring 37 is sleeved on both the left and right sides of the screw rod 32, and the top of the fixing ring 37 and the inner wall of the second cavity 33 are fixed by welding;

[0038] During operation, the fixing ring 37 and the left and right sides of the screw rod 32 are rotatably connected, and the fixing ring 37 is used to ensure that the screw rod 32 can rotate more stably in the second cavity 33 .

[0039] Furthermore, first limit blocks 38 are welded and fixed on both the front and rear sides of the abutment block 27. The first limit blocks 38 are slidably connected to the inside of the first limit groove 39. The first limit groove 39 is provided on the inner wall of the first cavity 28.

[0040] During operation, the first limiting block 38 slides in the first limiting groove 39 to limit the movement of the abutting block 27 , thereby ensuring that the abutting block 27 can stably move in the first cavity 28 .

[0041] Furthermore, a threaded hole is provided at the top of the abutment block 27, and the abutment block 27 and the fixing screw 48 are threadedly connected;

[0042] During operation, after the abutment block 27 moves to the maximum limit position inside the first cavity 28, the fixing screw 48 can be screwed on to fix the position of the abutment block 27 inside the first cavity 28 to ensure that the position of the abutment block 27 does not change.

[0043] Furthermore, two sets of slide grooves 43 are provided on the bottom end of the inner wall of the first cavity 28, and a slider 44 is slidably connected inside the slide groove 43. The slider 44 is designed in an I-shape, and a connecting rod 45 is welded and fixed to the top of the slider 44. The slider 44 and the spring 42 are welded and fixed, and the side of the spring 42 away from the slider 44 is welded and fixed to the inner wall of the slide groove 43;

[0044] During operation, through the structural design of the spring 42, the slide groove 43, the slider 44 and the connecting rod 45, when the block 26 is not in contact with the abutment block 27, the elastic force of the spring 42 can drive the block 26 to return to its original position, and the block 26 can be stored in the first cavity 28, so as to release the abutment between the block 26 and the plug-in block 23, making the disassembly process more convenient.

[0045] Furthermore, the protrusion 46 is designed in an L shape, and the top of the protrusion 46 is inserted into the inside of the groove 47, and the groove 47 is opened on the left and right sides of the fixing seat 21;

[0046] During operation, the protrusion 46 is designed to be L-shaped so as to be better engaged and fixed with the inserting block 23 through the groove 47 .

[0047] Working principle: In the prior art, a water-leakage-proof truss beam structure inevitably needs to be connected by screws during the installation and disassembly of the support truss. However, there are generally many screw holes on the support truss, which makes the assembly or disassembly process more complicated. In this case, an assembled durable and high-toughness steel-UHPC composite truss beam structure is designed with a connecting mechanism to facilitate the installation, fixation and disassembly between the crossbeam 1 and the support rod 20. When the crossbeam 1 and the support rod 20 are to be installed, first align the plug block 23 fixed on the bottom end of the support rod 20 with the plug hole 25 provided on the fixing seat 21 and insert it until the plug block 23 and the fixing seat 21 are in contact. At this time, the screw rod 32 inside the second cavity 33 is driven to rotate by rotating the rotating block 35, and the threaded connection on the screw rod 32 The first movable block 31 connected will move on the screw rod 32, and the first movable block 31 is connected together with the bottom end of the abutting block 27 through the connecting block 30, so it will drive the abutting block 27 to move inside the first cavity 28 until the abutting block 27 moves to the maximum limit. At this time, one side of the abutting block 27 will abut with the two sets of card blocks 26 and the abutting block 27 will push the card blocks 26 to move to both sides during the abutment with the card blocks 26, so that the card blocks 26 are engaged and fixed together with the plug blocks 23. At this point, the installation operation of the beam 1 and the support rod 20 is completed. Similarly, when the beam 1 and the support rod 20 need to be disassembled, it is only necessary to rotate the rotating block 35 in the opposite direction again, wherein the first cavity 28 is opened inside the fixing seat 21, the bottom end of the fixing seat 21 is fixed to the beam 1 by welding, and the second cavity 33 is opened inside the beam 1.

[0048] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An assembled durable, high-toughness steel-UHPC composite truss beam structure, comprising a crossbeam (1) and a support rod (20); characterized in that: The crossbeam (1) is provided with a connecting mechanism, the connecting mechanism comprising a fixing seat (21), the fixing seat (21) being fixedly connected to the crossbeam (1), two groups of plug holes (25) being provided on both left and right sides of the fixing seat (21), plug blocks (23) being inserted into the insides of the plug holes (25), the plug blocks (23) being engaged with the clamping blocks (26), the side of the clamping blocks (26) away from the plug blocks (23) being in contact with the abutting blocks (27), the bottom end of the abutting blocks (27) A connecting block (30) is fixedly connected, the connecting block (30) and the first moving block (31) are fixedly connected, the first moving block (31) is threadedly connected to the screw rod (32), the left side of the screw rod (32) is rotatably connected to the inner wall of the second cavity (33), the right side of the second cavity (33) is fixedly connected to a rotating block (35), the interior of the fixed seat (21) is provided with a first cavity (28), and the insert block (23) is fixedly connected to the bottom end of the support rod (20).

2. The assembled durable, high-toughness steel-UHPC composite truss beam structure according to claim 1 is characterized by: The left and right sides of the screw rod (32) are provided with threads with opposite rotation directions, the middle part of the screw rod (32) is provided with a unidirectional thread, the left and right sides of the screw rod (32) are threadedly connected to second moving blocks (34), and the top end of the second moving block (34) is fixedly connected to a protrusion (46).

3. The assembled durable, high-toughness steel-UHPC composite truss beam structure according to claim 2 is characterized by: The rotating block (35) is rotatably connected inside the notch (36), and the notch (36) is provided at the bottom end of the crossbeam (1).

4. The assembled durable, high-toughness steel-UHPC composite truss beam structure according to claim 3 is characterized by: The connecting block (30) is slidably connected inside the through groove (29); the through groove (29) is in communication with the second cavity (33) and the first cavity (28); a second limiting groove (49) is provided on the inner wall of the through groove (29); a second limiting block (40) is slidably connected inside the second limiting groove (49); and the second limiting block (40) is fixedly connected to the connecting block (30).

5. The assembled durable, high-toughness steel-UHPC composite truss beam structure according to claim 4 is characterized by: A cushion block (41) is fixedly connected to the inner wall of the second limiting groove (49), and the cushion block (41) is made of rubber material.

6. The assembled durable, high-toughness steel-UHPC composite truss beam structure according to claim 5, characterized in that: A fixing ring (37) is sleeved on both the left and right sides of the screw rod (32), and the top end of the fixing ring (37) is fixedly connected to the inner wall of the second cavity (33).

7. The assembled durable, high-toughness steel-UHPC composite truss beam structure according to claim 6 is characterized by: The abutment block (27) is fixedly connected to first limit blocks (38) on both the front and rear sides. The first limit blocks (38) are slidably connected to the inside of a first limit groove (39). The first limit groove (39) is formed on the inner wall of the first cavity (28).

8. The assembled durable, high-toughness steel-UHPC composite truss beam structure according to claim 7 is characterized by: A threaded hole is provided at the top of the abutment block (27), and the abutment block (27) and the fixing screw (48) are threadedly connected.

9. The assembled durable, high-toughness steel-UHPC composite truss beam structure according to claim 8, characterized in that: Two groups of slide grooves (43) are provided on the bottom end of the inner wall of the first cavity (28); a slider (44) is slidably connected inside the slide groove (43); a connecting rod (45) is fixedly connected to the top of the slider (44); the slider (44) is fixedly connected to a spring (42); a side of the spring (42) away from the slider (44) is fixedly connected to the inner wall of the slide groove (43).

10. The assembled durable, high-toughness steel-UHPC composite truss beam structure according to claim 9, characterized in that: The protrusion (46) is designed to be L-shaped, and the top end of the protrusion (46) is inserted into the interior of the groove (47). The groove (47) is opened on the left and right sides of the fixing seat (21).

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