Detachable and reusable UHPC (Ultra High Performance Concrete) bowel relaxing bridge

Abstract

The invention belongs to the technical field of bowel-relaxing bridges, particularly relates to a detachable and reusable UHPC (Ultra High Performance Concrete) bowel-relaxing bridge, and aims to solve the problems that an existing bridge cannot be easily recycled and reused, two adjacent prefabricated bridges are fixed through bolts, the fixing effect is poor, and later-period bridge disassembly is inconvenient. The system comprises a plurality of bridge combinations fixed to piers, and UHPC bridge deck slabs are arranged at the tops of the bridge combinations and used for passing of pedestrians and vehicles in the later period; a first side plate and a second side plate are fixed to the two ends of the bridge combination correspondingly, the first annular steel bar and the second annular steel bar are matched with solidified concrete, the stability between the two adjacent bridge combinations can be improved, operation is convenient, the two bridge combinations do not need to be fixed through too many bolts, and the practicability is high. And in the later period, the concrete can be dismantled through the high-pressure water gun, the bridge combination can be repeatedly used conveniently, and the concrete in the dismantling process can be recycled.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge devices for maintaining bowel movements, and in particular to a detachable and reusable UHPC bridge for maintaining bowel movements. Background Art

[0002] With the further development of bridge industrialization, the bridge construction method has gradually changed from the traditional on-site casting of the corresponding bridge to prefabrication of important components in the factory and then transporting them to the site for splicing and installation; compared with traditional construction methods, this can speed up the construction of bridges.

[0003] However, the following problems still exist in the installation and construction process of prefabricated beam bridges in the prior art:

[0004] 1. When some construction vehicles are driving in some remote areas, there are no roads or bridges for vehicles to drive on due to road problems, so the vehicles cannot drive on. This requires the construction of roads or bridges for vehicles to drive on and then transport large equipment to the construction site. However, the bridges are abandoned after the construction is completed, which leads to a waste of resources.

[0005] 2. In addition, when installing and splicing prefabricated bridges, a large number of bolts are often used to fix two adjacent prefabricated bridges. The fixing effect is unsatisfactory and it is not convenient for the later disassembly of the bridge.

[0006] In response to the above problems, the present invention document proposes a detachable and reusable UHPC bridge. Summary of the Invention

[0007] The purpose of the present invention is to solve the shortcomings of the existing technology that bridges cannot be easily recycled and reused, and two adjacent prefabricated bridges are fixed by bolts, the fixing effect is unsatisfactory, and it is inconvenient to dismantle the bridges at a later time. A detachable and reusable UHPC bridge is proposed.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A detachable and reusable UHPC bridge for maintaining traffic flow, comprising a plurality of bridge assemblies fixed on bridge piers, with a UHPC bridge deck provided on top of the bridge assemblies for the subsequent passage of pedestrians and vehicles;

[0010] A first side plate and a second side plate are fixed to both ends of the bridge assembly, and adjacent first side plates and second side plates are matched with each other;

[0011] A fixed structure is provided between two adjacent bridge assemblies and is used to connect the two adjacent bridge assemblies;

[0012] The protective structure is installed on top of the UHPC bridge deck to protect pedestrians and vehicles in the future.

[0013] In a possible design, the bridge assembly is composed of two I-beams, and the two I-beams are fixedly connected by a cross structure;

[0014] The cross structure includes a transverse rib that is fixed through two I-beams. The outer wall of the transverse rib is fixedly sleeved with four fixing frames, and the four fixing frames are grouped in twos, and two adjacent fixing frames are respectively located on both sides of the I-beam. A plurality of sixth bolts are provided in the fixing frame, and the fixing frame is fixedly connected to the I-beam through the sixth bolts. The two I-beams are firmly fixedly connected by the transverse ribs, the fixing frame and the sixth bolts. A plurality of supporting ribs are fixed on the top and bottom of the fixing frame, and the end of the supporting rib away from the fixing frame is fixedly connected to the inner wall of the I-beam, so as to increase the stability of the I-beam.

[0015] In a possible design, the fixed structure includes a second bottom plate and a first bottom plate fixed on both sides of the bottom of the bridge combination, and the first bottom plate and the second bottom plate are both provided with second bolts, and the first bottom plate and the second bottom plate are both fixedly connected to the bridge combination by multiple second bolts, and the bottoms of the first bottom plate and the second bottom plate are respectively welded with a first pocket plate and a second pocket plate, and the adjacent second pocket plates cooperate with the first pocket plates to close the bottoms of the two adjacent bridge assemblies, and the second pocket plate is located at the bottom of the first pocket plate; when pouring C50 concrete in the later stage, the cooperation between the second pocket plate and the first pocket plate can prevent the C50 concrete from falling, and at the same time, when it is dismantled in the later stage, the first bottom plate, the second bottom plate, the second pocket plate and the first pocket plate can be recycled by loosening the second bolts, thereby reducing resource loss.

[0016] In a possible design, the fixed structure also includes a plurality of second annular steel bars and first annular steel bars respectively passing through the first side plate and the second side plate, and the adjacent plurality of first annular steel bars and second annular steel bars are arranged in an alternating manner. Both ends of the adjacent first side plate and the second side plate are provided with a rotating baffle, and a plurality of fifth bolts and fourth bolts are provided in the rotating baffle. The rotating baffle is fixedly connected to the first side plate and the second side plate through the fifth bolt, and the rotating baffle is fixedly connected to the two adjacent bridge assemblies through the fourth bolt. Both ends of the rotating baffle are rotatably connected to a base plate, and a plurality of third bolts are provided in the base plate. Both base plates are fixedly connected to the two adjacent bridge assemblies through the third bolts. The rotating baffle, the first side plate, the second side plate, the second pocket plate and the first pocket plate form a casting cavity, and by casting C50 concrete into the casting cavity, the C50 concrete is combined with the first annular steel bar and the second annular steel bar to increase the stability between the two adjacent bridge assemblies.

[0017] In one possible design, the protective structure includes a plurality of pin holes provided on both sides of the top of the UHPC bridge deck, a plurality of sockets provided on one side of the top of the two I-beams, and the pin holes and the sockets cooperate with each other. The same guardrail vertical rod is provided in the pin holes and the sockets, and a fixing ring is welded to the outer wall of the guardrail vertical rod, and the fixing ring is fixedly connected to the top of the UHPC bridge deck. The stability between the UHPC bridge deck and the I-beam can be increased by the pin holes, the sockets, the guardrail vertical rods and the fixing rings. The tops of the multiple guardrail vertical rods on the same side are welded with the same guardrail cross bar. The guardrail is formed by the cooperation of the guardrail vertical rods and the guardrail cross bar to protect pedestrians and vehicles in the later stage.

[0018] In one possible design, the outer walls of two adjacent guardrail cross bars are provided with the same protective plate, the outer walls of two adjacent guardrail cross bars are provided with the same connecting head, and the connecting head is located inside the protective plate. A plurality of first bolts are provided inside the connecting head, and the connecting head is fixedly connected to the two adjacent guardrail cross bars through the first bolts. The stability between the two adjacent guardrail cross bars can be increased through the connecting head, the first bolts and the protective plate.

[0019] In a possible design, the outer walls of multiple first annular steel bars and second annular steel bars are welded with a first fixed retaining ring, and the first fixed retaining ring located on the outer wall of the first annular steel bar is fixedly connected to the second side plate, and the first fixed retaining ring located on the outer wall of the second annular steel bar is fixedly connected to the first side plate. The first fixed retaining ring can increase the stability between the second annular steel bar and the first side plate, and the first annular steel bar and the second side plate. The ends of multiple first annular steel bars and second annular steel bars that are away from each other pass through the corresponding transverse ribs. The outer walls of the first annular steel bars and the second annular steel bars are fixedly welded with a second fixed retaining ring, and the second fixed retaining ring is fixedly connected to the transverse ribs. The second fixed retaining ring and the transverse ribs can increase the stability between the first annular steel bars, the second annular steel bars and the bridge combination.

[0020] In one possible design, a closing plate is provided between two adjacent bridge assemblies, and the bottom of the closing plate is fixedly connected to the top of the first side plate and the second side plate. The closing plate is used to seal the C50 concrete poured later. An expansion joint is fixed on the top of the closing plate, and the expansion joint is located between two adjacent UHPC bridge decks. The top of the expansion joint is fixedly connected to the protective plate by bolts. The protective plate and the expansion joint can increase the stability between the guardrail crossbar and the bridge assembly. A plurality of ventilation holes are provided in the protective plate to reduce the wind resistance of the protective plate.

[0021] In a possible design, a plurality of connecting ears are provided on the side where the first side panel and the second side panel are close to each other, and the plurality of connecting ears are fixedly connected to the top inner wall and the bottom inner wall of the I-beam by bolts. The first side panel and the second side panel can be tightly fixed to the I-beam through the connecting ears.

[0022] In a possible design, fixing plates are provided on both sides of the tops of two adjacent UHPC bridge panels, a same fourth fixing rod is fixed between the two adjacent fixing plates, a third fixing rod is provided at the bottom of the two fixing plates through a rectangular groove, the outer walls of the two third fixing rods are sleeved with a first hollow metal plate, the outer wall of the fourth fixing rod is sleeved with a second hollow metal plate, two first fixing rods are fixed on one side of the two rotating baffles through a groove, and the other end of the first hollow metal plate is sleeved on the outer wall of the first fixing rod, a second fixing rod is provided on one side of the rotating baffle through a groove, and the other end of the second hollow metal plate is sleeved on the outer wall of the second fixing rod; when the UHPC bridge needs to be dismantled and reused, the fourth bolt and the fifth bolt are loosened to release the rotating baffle from the bridge assembly, the first side plate and the second The connection of the side panels drives the rotating baffle to rotate 90°. Since the bottom of the rotating baffle touches the bottom of the second pocket plate, the rotating baffle is in a horizontal state at this time. Multiple fixed plates are installed on the corresponding UHPC bridge panels, and then the first hollow metal plate and the second hollow metal plate are installed. An interception frame is formed by the first hollow metal plate, the second hollow metal plate and the rotating baffle. Then, a high-pressure water gun can be used to conveniently remove the C50 concrete wet joints, and the bridge combination, the first ring steel bar and the second ring steel bar will not be damaged. In addition, when the high-pressure water gun flushes away the C50 concrete, the first hollow metal plate and the second hollow metal plate can cooperate to collect the removed concrete, which is convenient for later recycling and avoids waste. At the same time, after the C50 concrete is removed, the two bridge combinations can be recycled for later reuse, which greatly reduces the waste of resources.

[0023] Beneficial effects:

[0024] In the present invention, a plurality of second annular steel bars and a plurality of first annular steel bars are respectively passed through the first side plate and the second side plate, and adjacent plurality of first annular steel bars and second annular steel bars are arranged in a staggered manner. Rotating baffles are provided at both ends of adjacent first and second side plates, and the rotating baffles, the first side plate, the second side plate, the second pocket plate, and the first pocket plate form a casting cavity. By pouring C50 concrete into the casting cavity, the C50 concrete cooperates with the first and second annular steel bars to increase the stability between the two adjacent bridge assemblies.

[0025] In the present invention, the first bottom plate and the second bottom plate are both fixedly connected to the corresponding bridge assembly by means of second bolts. A first pocket plate and a second pocket plate are welded to the bottoms of the first bottom plate and the second bottom plate, respectively. The adjacent second pocket plates cooperate with the first pocket plates to seal the bottoms of the two adjacent bridge assemblies. When C50 concrete is poured later, the cooperation between the second pocket plates and the first pocket plates can prevent the C50 concrete from falling. At the same time, when the concrete is later dismantled, the first bottom plate, the second bottom plate, the second pocket plate and the first pocket plate can be recycled by loosening the second bolts, thereby reducing resource loss.

[0026] In the present invention, the outer walls of two adjacent guardrail crossbars are covered with a common protective plate, and the outer walls of two adjacent guardrail crossbars are covered with a common connecting head. The connecting head is fixedly connected to the two adjacent guardrail crossbars by a plurality of first bolts, and the top of the expansion joint is fixedly connected to the protective plate by bolts. The connecting head, the first bolts, and the protective plate can increase the stability between the two adjacent guardrail crossbars, and the protective plate and the expansion joint can increase the stability between the guardrail crossbar and the bridge assembly.

[0027] In the present invention, a third fixing rod is provided at the bottom of the two fixing plates, the outer walls of the two third fixing rods are both sleeved with a first hollow metal plate, the outer wall of the fourth fixing rod is sleeved with a second hollow metal plate, two first fixing rods are fixed to one side of the rotating baffle, and the other end of the first hollow metal plate is sleeved on the outer wall of the first fixing rod, a second fixing rod is provided on one side of the rotating baffle through a groove, and the other end of the second hollow metal plate is sleeved on the outer wall of the second fixing rod; when the UHPC Baotong temporary bridge needs to be dismantled, a high-pressure water gun is used to conveniently dismantle the C50 concrete wet joints, and the first hollow metal plate and the second hollow metal plate cooperate to collect the dismantled concrete, which is convenient for later recycling and avoids waste.

[0028] In the present invention, the first annular steel bar, the second annular steel bar and the solidified concrete are combined to increase the stability between the two adjacent bridge assemblies. The operation is convenient and there is no need to use too many bolts to fix the two bridge assemblies. The concrete can be removed by a high-pressure water gun at a later stage, which is convenient for the reuse of the bridge assembly. The concrete in the disassembly process can be recycled, thereby reducing the generation of construction waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the three-dimensional structure of a detachable and reusable UHPC bridge for maintaining access provided in Example 1 of the present invention;

[0030] Figure 2 A schematic diagram of the three-dimensional explosion structure of a detachable and reusable UHPC bridge for maintaining access provided in Example 1 of the present invention;

[0031] Figure 3 A schematic diagram of a three-dimensional exploded structure of a detachable and reusable UHPC bridge assembly, a UHPC bridge deck, a first side plate, and a first bottom plate provided in Example 1 of the present invention;

[0032] Figure 4 A schematic three-dimensional cross-sectional structure diagram of a detachable and reusable UHPC bridge assembly provided in Example 1 of the present invention;

[0033] Figure 5 A schematic diagram of a three-dimensional exploded structure of a guardrail crossbar, pin holes, and I-beam of a detachable and reusable UHPC bridge for maintaining accessibility, provided in Example 1 of the present invention;

[0034] Figure 6 A schematic diagram of a three-dimensional exploded structure of a removable and reusable UHPC bridge for maintaining accessibility, including guardrail crossbars, connectors, and protective plates, provided in Example 1 of the present invention;

[0035] Figure 7 A schematic diagram of the three-dimensional structure of the second base plate, second pocket plate, first base plate, and first pocket plate of a detachable and reusable UHPC bridge provided in Example 1 of the present invention;

[0036] Figure 8 A schematic diagram of a three-dimensional exploded structure of a detachable and reusable UHPC bridge for maintaining access provided in Example 1 of the present invention, showing a closing plate, a second side plate, a first side plate, and a rotating baffle;

[0037] Figure 9 A schematic diagram of the three-dimensional structure of a first side plate, a second annular reinforcement, and a second side plate and a first annular reinforcement of a detachable and reusable UHPC bridge for maintaining access provided in Example 1 of the present invention;

[0038] Figure 10 A schematic diagram of a three-dimensional exploded structure of a rotating baffle and base plate of a detachable and reusable UHPC bridge for maintaining access provided in Example 1 of the present invention;

[0039] Figure 11 A schematic diagram of the three-dimensional structure of a detachable and reusable UHPC bridge for maintaining access provided in Example 2 of the present invention;

[0040] Figure 12 Schematic diagram of the three-dimensional exploded structure of the rotating baffle, fixed plate and second hollow metal plate of a detachable and reusable UHPC bridge for maintaining access provided in Example 2 of the present invention.

[0041] Figure: 1. Bridge assembly; 2. UHPC bridge deck; 3. I-beam; 4. Transverse rib; 5. Fixing frame; 6. Support rib; 7. First side panel; 8. Second side panel; 9. Connecting lug; 10. Pin hole; 11. Socket; 12. Guardrail vertical bar; 13. Guardrail horizontal bar; 14. Connector; 15. First bolt; 16. Guard plate; 17. Ventilation hole; 18. First bottom panel; 19. Second bottom panel; 20. Second sling plate; 21. First sling plate; 22. Second bolt; 23. First ring shaped steel bar; 24, second annular steel bar; 25, base plate; 26, third bolt; 27, rotating baffle; 28, fourth bolt; 29, fifth bolt; 30, closing plate; 31, expansion joint; 32, first fixing rod; 33, second fixing rod; 34, fixing plate; 35, third fixing rod; 36, first hollow metal plate; 37, fourth fixing rod; 38, second hollow metal plate; 39, sixth bolt; 40, fixing ring; 41, first fixing baffle ring; 42, second fixing baffle ring. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0043] Example 1

[0044] Reference Figures 1-10 A detachable and reusable UHPC bridge for maintaining traffic flow, which is used in the field of bridge maintenance, includes multiple bridge assemblies 1 fixed on bridge piers, and a UHPC bridge deck 2 is provided on the top of the bridge assembly 1 for the later passage of pedestrians and vehicles;

[0045] A first side plate 7 and a second side plate 8 are fixed to both ends of the bridge assembly 1, and the adjacent first side plates 7 and second side plates 8 are matched with each other.

[0046] Reference Figure 3 and Figure 4 , the bridge assembly 1 is composed of two I-beams 3, and the two I-beams 3 are fixedly connected by a cross structure;

[0047] The cross-structure includes a transverse rib 4 that is fixed through two I-beams. Four fixing frames 5 are fixed on the outer wall of the transverse rib 4, and the four fixing frames 5 are grouped in pairs. Two adjacent fixing frames 5 are respectively located on both sides of the I-beam 3. A plurality of sixth bolts 39 are provided in the fixing frame 5. The fixing frame 5 is fixedly connected to the I-beam 3 through the sixth bolts 39. The two I-beams 3 are firmly fixedly connected by the transverse rib 4, the fixing frame 5 and the sixth bolts 39. A plurality of support ribs 6 are fixed on the top and bottom of the fixing frame 5, and the end of the support rib 6 away from the fixing frame 5 is fixedly connected to the inner wall of the I-beam 3, so as to increase the stability of the I-beam 3.

[0048] Reference Figure 3 The first side panel 7 and the second side panel 8 are provided with a plurality of connecting ears 9 on the side close to each other. The plurality of connecting ears 9 are fixedly connected to the top inner wall and the bottom inner wall of the I-beam 3 by bolts. The first side panel 7 and the second side panel 8 can be tightly fixed to the I-beam 3 through the connecting ears 9.

[0049] Reference Figure 3 and Figure 7 The UHPC bridge also includes a fixed structure arranged between two adjacent bridge assemblies 1 for splicing the two adjacent bridge assemblies 1; the fixed structure includes a second bottom plate 19 and a first bottom plate 18 fixed on both sides of the bottom of the bridge assembly 1, and the first bottom plate 18 and the second bottom plate 19 are both provided with second bolts 22, and the first bottom plate 18 and the second bottom plate 19 are fixedly connected to the bridge assembly 1 by multiple second bolts 22, and the bottoms of the first bottom plate 18 and the second bottom plate 19 are respectively welded with a first pocket plate 21 and a second pocket plate 20, and the adjacent second pocket plates 20 cooperate with the first pocket plates 21 to close the bottoms of the two adjacent bridge assemblies 1, and the second pocket plates 20 are located at the bottom of the first pocket plates 21; when pouring C50 concrete in the later stage, the cooperation between the second pocket plates 20 and the first pocket plates 21 can prevent the C50 concrete from falling, and at the same time, when dismantled in the later stage, the first bottom plate 18, the second bottom plate 19, the second pocket plates 20 and the first pocket plates 21 can be recycled by loosening the second bolts 22, thereby reducing resource loss.

[0050] Reference Figure 2 、 Figure 8 、 Figure 9 and Figure 10 The fixing structure also includes a plurality of second annular steel bars 24 and a first annular steel bar 23 respectively passing through the first side plate 7 and the second side plate 8. The adjacent plurality of first annular steel bars 23 and the second annular steel bars 24 are arranged in an staggered manner. Both ends of the adjacent first side plates 7 and the second side plates 8 are provided with a rotating baffle 27, and a plurality of fifth bolts 29 and a fourth bolt 28 are provided in the rotating baffle 27. The rotating baffle 27 is fixedly connected to the first side plate 7 and the second side plate 8 through the fifth bolt 29, and the rotating baffle 27 is fixedly connected to the two adjacent bridge assemblies 1 through the fourth bolt 28. Both ends of the rotating baffle 27 are rotatably connected to the base plate 25, and a plurality of third bolts 26 are provided in the base plate 25. The two base plates 25 are fixedly connected to the two adjacent bridge assemblies 1 through the third bolts 26. The rotating baffle 27, the first side plate 7, the second side plate 8, the second pocket plate 20 and the first pocket plate 21 form a casting cavity. By pouring C50 concrete into the casting cavity, the C50 concrete cooperates with the first annular steel bar 23 and the second annular steel bar 24 to increase the stability between the two adjacent bridge assemblies 1.

[0051] Reference Figure 9The outer walls of multiple first annular steel bars 23 and second annular steel bars 24 are welded with a first fixed retaining ring 41, and the first fixed retaining ring 41 located on the outer wall of the first annular steel bar 23 is fixedly connected to the second side plate 8, and the first fixed retaining ring 41 located on the outer wall of the second annular steel bar 24 is fixedly connected to the first side plate 7. The first fixed retaining ring 41 can increase the stability between the second annular steel bar 24 and the first side plate 7, and the first annular steel bar 23 and the second side plate 8. The ends of multiple first annular steel bars 23 and second annular steel bars 24 away from each other all pass through the corresponding transverse ribs 4. The outer walls of the first annular steel bars 23 and the second annular steel bars 24 are fixedly welded with a second fixed retaining ring 42, and the second fixed retaining ring 42 is fixedly connected to the transverse ribs 4. The second fixed retaining ring 42 and the transverse ribs 4 can increase the stability between the first annular steel bars 23, the second annular steel bars 24 and the bridge combination 1.

[0052] Reference Figure 2 and Figure 5 The UHPC bridge also includes a top protective structure arranged on the top of the UHPC bridge deck 2 for protecting pedestrians and vehicles in the future; the protective structure includes a plurality of pin holes 10 on both sides of the top of the UHPC bridge deck 2, and a plurality of insertion holes 11 on one side of the top of the two I-beams 3, and the pin holes 10 and the insertion holes 11 cooperate with each other, and the pin holes 10 and the insertion holes 11 are provided with the same guardrail vertical rod 12, and the outer wall of the guardrail vertical rod 12 is welded with a fixing ring 40, and the fixing ring 40 is fixedly connected to the top of the UHPC bridge deck 2. The stability between the UHPC bridge deck 2 and the I-beam 3 can be increased by the pin holes 10, the insertion holes 11, the guardrail vertical rod 12 and the fixing ring 40. The tops of the multiple guardrail vertical rods 12 on the same side are welded with the same guardrail cross bar 13, and a guardrail is formed by the cooperation of the guardrail vertical rod 12 and the guardrail cross bar 13 to protect pedestrians and vehicles in the future.

[0053] Reference Figure 5 and Figure 6 The outer walls of two adjacent guardrail cross bars 13 are covered with the same protective plate 16, and the outer walls of two adjacent guardrail cross bars 13 are covered with the same connecting head 14, and the connecting head 14 is located in the protective plate 16. A plurality of first bolts 15 are provided in the connecting head 14, and the connecting head 14 is fixedly connected to the two adjacent guardrail cross bars 13 through the first bolts 15. The stability between the two adjacent guardrail cross bars 13 can be increased by the connecting head 14, the first bolts 15 and the protective plate 16.

[0054] Reference Figure 2 、 Figure 6 and Figure 8A closing plate 30 is provided between two adjacent bridge assemblies 1, and the bottom of the closing plate 30 is fixedly connected to the top of the first side plate 7 and the second side plate 8. The closing plate 30 is used to close the C50 concrete poured later. An expansion joint 31 is fixed on the top of the closing plate 30, and the expansion joint 31 is located between two adjacent UHPC bridge decks 2. The top of the expansion joint 31 is fixedly connected to the protective plate 16 by bolts. The protective plate 16 and the expansion joint 31 can increase the stability between the guardrail crossbar 13 and the bridge assembly 1. A plurality of ventilation holes 17 are provided in the protective plate 16 to reduce the wind resistance of the protective plate 16.

[0055] Example 2

[0056] refer to Figure 11 and Figure 12 , based on the improvement of Example 1: fixing plates 34 are provided on both sides of the tops of the two adjacent UHPC bridge panels 2, and the same fourth fixing rod 37 is fixed between the two adjacent fixing plates 34, and the bottoms of the two fixing plates 34 are provided with third fixing rods 35 through rectangular grooves, and the outer walls of the two third fixing rods 35 are sleeved with first hollow metal plates 36, and the outer wall of the fourth fixing rod 37 is sleeved with second hollow metal plates 38, and one side of the two rotating baffles 27 is fixed with two first fixing rods 32 through grooves, and the other end of the first hollow metal plate 36 is sleeved on the outer wall of the first fixing rod 32, and one side of the rotating baffle 27 is provided with a second fixing rod 33 through a groove, and the other end of the second hollow metal plate 38 is sleeved on the outer wall of the second fixing rod 33; when the UHPC maintenance bridge needs to be dismantled and reused, the fourth bolt 28 and the fifth bolt 29 are loosened to release the rotating baffle 27 from the bridge assembly 1, the first side plate 7 and the second The connection of the side panels 8 drives the rotating baffle 27 to rotate 90°. Since the bottom of the rotating baffle 27 touches the bottom of the second pocket plate 20, the rotating baffle 27 is in a horizontal state at this time. Multiple fixed plates 34 are installed on the corresponding UHPC bridge deck 2, and then the first hollow metal plate 36 and the second hollow metal plate 38 are installed. An interception frame is formed by the first hollow metal plate 36, the second hollow metal plate 38 and the rotating baffle 27. Then, a high-pressure water gun can be used to conveniently remove the C50 concrete wet joints, and the bridge combination 1, the first annular steel bar 23 and the second annular steel bar 24 will not be damaged. In addition, when the high-pressure water gun flushes away the C50 concrete, the first hollow metal plate 36 and the second hollow metal plate 38 can cooperate to collect the removed concrete, which is convenient for later recycling and avoids waste. At the same time, after the C50 concrete is removed, the two bridge combinations 1 can be recycled, which is convenient for later reuse, greatly reducing the waste of resources.

[0057] A method for using a detachable and reusable UHPC bridge comprises the following steps:

[0058] S1. When installing the UHPC bridge, the prefabricated UHPC bridge deck 2 and the bridge assembly 1 are hoisted onto the designated piers by a crane, and the bridge assembly 1 is fixed to the piers, and the first annular reinforcement 23 and the second annular reinforcement 24 at the ends of the two adjacent bridge assemblies 1 close to each other are interlaced, and then the rotating baffle 27 is installed on one side of the two adjacent bridge assemblies 1 through the cooperation of the base plate 25 and the third bolt 26, and then the rotating baffle 27 is fixedly connected to the corresponding bridge assembly 1 and the second side plate 8 and the first side plate 7 through the fourth bolt 28 and the fifth bolt 29. The rotating baffle 27 is used to increase the stability between the two adjacent bridge assemblies 1;

[0059] S2, after the rotating baffle 27 is installed, the two rotating baffles 27, the second scoop plate 20, the first scoop plate 21, the first side plate 7 and the second side plate 8 form a pouring cavity reference between the two adjacent bridge assemblies 1. Figure 8 , pour C50 concrete into the pouring cavity. After the C50 concrete solidifies, the cooperation between the C50 concrete and the first annular reinforcement 23 and the second annular reinforcement 24 can fix the two adjacent bridge assemblies 1. The operation is simple and the construction speed is improved. Then, a closing plate 30 is installed above the C50 concrete, and the closing plate 30 is fixed to the corresponding first side plate 7 and second side plate 8. Then, an expansion joint 31 is installed above the closing plate 30, and the expansion joint 31 is located between the two adjacent UHPC bridge decks 2. The adjacent bridge assemblies 1 are preliminarily fixed.

[0060] S3. Then, the guardrail vertical rod 12 is inserted into the pin hole 10 and the insertion hole 11, and the guardrail vertical rod 12 is fixed to the UHPC bridge deck 2 through the fixing ring 40 to strengthen the stability between the UHPC bridge deck 2 and the I-beam 3. In addition, the two adjacent guardrail crossbars 13 are fixed with the connector 14 and the first bolt 15 to further increase the stability between the two adjacent bridge assemblies 1. At the same time, the protective plate 16 can play a protective role at the connection between the two adjacent bridge assemblies 1;

[0061] S4. When the UHPC bridge needs to be dismantled and reused, the guardrail crossbar 13, guardrail vertical bar 12, protective plate 16, closing plate 30 and expansion joint 31 are removed, and then the fourth bolt 28 and the fifth bolt 29 are loosened to release the connection between the rotating baffle 27 and the bridge assembly 1, the first side plate 7 and the second side plate 8. The rotating baffle 27 is driven to rotate 90 degrees. Since the bottom of the rotating baffle 27 touches the bottom of the second pocket plate 20, the rotating baffle 27 is in a horizontal state at this time. A plurality of fixing plates 34 are installed on the corresponding UHPC bridge deck 2, and then the first hollow metal plate 36 and the second hollow metal plate 8 are installed. The metal plate 38 forms an interception frame through the first hollow metal plate 36, the second hollow metal plate 38 and the rotating baffle 27, and then the C50 concrete wet joint can be conveniently removed by using a high-pressure water gun, and the bridge combination 1, the first annular reinforcement 23 and the second annular reinforcement 24 will not be damaged. In addition, when the high-pressure water gun washes away the C50 concrete, the first hollow metal plate 36 and the second hollow metal plate 38 can cooperate to collect the removed concrete, which is convenient for later recycling and avoids waste. At the same time, after the C50 concrete is removed, the two bridge combinations 1 can be recycled for later reuse, which greatly reduces the waste of resources.

[0062] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A detachable and reusable UHPC bridge, characterized in that: It comprises a plurality of bridge assemblies (1) fixed on bridge piers, wherein a UHPC bridge deck (2) is provided on the top of the bridge assemblies (1) for the subsequent passage of pedestrians and vehicles; A first side plate (7) and a second side plate (8) are respectively fixed to both ends of the bridge assembly (1), and adjacent first side plates (7) and second side plates (8) are matched; A fixed structure is provided between two adjacent bridge assemblies (1) and is used to splice the two adjacent bridge assemblies (1); The protective structure is arranged on the top of the UHPC bridge deck (2) and is used to protect pedestrians and vehicles in the later stage.

2. The detachable and reusable UHPC bridge according to claim 1 is characterized in that: The bridge assembly (1) is composed of two I-beams (3), and the two I-beams (3) are fixedly connected via a transverse structure; The cross structure includes a transverse rib (4) fixedly passing through two I-beams, the outer wall of the transverse rib (4) is fixedly sleeved with four fixing frames (5), and the four fixing frames (5) are grouped in pairs, and two adjacent fixing frames (5) are respectively located on both sides of the I-beam (3), a plurality of sixth bolts (39) are provided in the fixing frame (5), the fixing frame (5) is fixedly connected to the I-beam (3) through the sixth bolts (39), and the two I-beams (3) are stably fixedly connected through the transverse rib (4), the fixing frame (5) and the sixth bolts (39), a plurality of supporting ribs (6) are fixed on the top and bottom of the fixing frame (5), and the end of the supporting rib (6) away from the fixing frame (5) is fixedly connected to the inner wall of the I-beam (3), so as to increase the stability of the I-beam (3).

3. The detachable and reusable UHPC bridge according to claim 2 is characterized in that: The fixing structure comprises a second bottom plate (19) and a first bottom plate (18) fixed on both sides of the bottom of the bridge assembly (1); second bolts (22) are provided in the first bottom plate (18) and the second bottom plate (19); and the first bottom plate (18) and the second bottom plate (19) are fixedly connected to the bridge assembly (1) through a plurality of second bolts (22); the bottoms of the first bottom plate (18) and the second bottom plate (19) are respectively welded with a first pocket plate (21) and a second pocket plate (20); adjacent second pocket plates (20) cooperate with the first pocket plates (21) to close the bottoms of two adjacent bridge assemblies (1), and the second pocket plates (20) are located at the bottom of the first pocket plate (21).

4. The detachable and reusable UHPC bridge according to claim 3 is characterized in that: The fixing structure further comprises a plurality of second annular steel bars (24) and first annular steel bars (23) respectively penetrating the first side plate (7) and the second side plate (8), wherein the plurality of adjacent first annular steel bars (23) and second annular steel bars (24) are arranged in a staggered manner, and a rotating baffle (27) is provided at both ends of the adjacent first side plate (7) and the second side plate (8), wherein the rotating baffle (27) is provided with a plurality of fifth bolts (29) and fourth bolts (28), and the rotating baffle (27) is connected to the first side plate (7) and the second side plate (8) by the fifth bolts (29). The side plates (8) are fixedly connected, and the rotating baffle (27) is fixedly connected to the two adjacent bridge assemblies (1) through a fourth bolt (28). Both ends of the rotating baffle (27) are rotatably connected to a base plate (25). A plurality of third bolts (26) are provided in the base plate (25). Both base plates (25) are fixedly connected to the two adjacent bridge assemblies (1) through the third bolts (26). The rotating baffle (27), the first side plate (7), the second side plate (8), the second pocket plate (20) and the first pocket plate (21) form a casting cavity.

5. The detachable and reusable UHPC bridge according to claim 4 is characterized in that: The protective structure comprises a plurality of pin holes (10) provided on both sides of the top of the UHPC bridge deck (2), a plurality of insertion holes (11) provided on one side of the top of the two I-beams (3), and the pin holes (10) and the insertion holes (11) cooperate with each other. A same guardrail vertical rod (12) is provided in the pin holes (10) and the insertion holes (11), and a fixing ring (40) is welded to the outer wall of the guardrail vertical rod (12), and the fixing ring (40) is fixedly connected to the top of the UHPC bridge deck (2). The stability between the UHPC bridge deck (2) and the I-beam (3) can be increased by the pin holes (10), the insertion holes (11), the guardrail vertical rod (12) and the fixing ring (40). The tops of the plurality of guardrail vertical rods (12) located on the same side are welded with a same guardrail cross bar (13). The guardrail vertical rod (12) and the guardrail cross bar (13) cooperate to form a guardrail for protecting pedestrians and vehicles in the later stage.

6. The detachable and reusable UHPC bridge according to claim 5 is characterized in that: The outer walls of two adjacent guardrail cross bars (13) are provided with a same protective plate (16), the outer walls of the two adjacent guardrail cross bars (13) are provided with a same connecting head (14), and the connecting head (14) is located in the protective plate (16), a plurality of first bolts (15) are provided in the connecting head (14), and the connecting head (14) is fixedly connected to the two adjacent guardrail cross bars (13) through the first bolts (15).

7. The detachable and reusable UHPC bridge according to claim 6 is characterized in that: The outer walls of the plurality of first annular steel bars (23) and the second annular steel bars (24) are all welded with a first fixed retaining ring (41), and the first fixed retaining ring (41) located on the outer wall of the first annular steel bar (23) is fixedly connected to the second side plate (8), and the first fixed retaining ring (41) located on the outer wall of the second annular steel bar (24) is fixedly connected to the first side plate (7). The stability between the second annular steel bar (24) and the first side plate (7), and between the first annular steel bar (23) and the second side plate (8) can be increased by the first fixed retaining ring (41). The ends of the plurality of first annular steel bars (23) and the second annular steel bars (24) that are away from each other all pass through the corresponding transverse rib (4). The outer walls of the first annular steel bar (23) and the second annular steel bar (24) are all fixedly welded with a second fixed retaining ring (42), and the second fixed retaining ring (42) is fixedly connected to the transverse rib (4).

8. The detachable and reusable UHPC bridge according to claim 7 is characterized in that: A closing plate (30) is provided between two adjacent bridge assemblies (1), and the bottom of the closing plate (30) is fixedly connected to the top of the first side plate (7) and the top of the second side plate (8). The closing plate (30) is used to close the C50 concrete poured later. An expansion joint (31) is fixed to the top of the closing plate (30), and the expansion joint (31) is located between two adjacent UHPC bridge decks (2). The top of the expansion joint (31) is fixedly connected to the protective plate (16) by bolts. The protective plate (16) is provided with a plurality of ventilation holes (17) for reducing the wind resistance of the protective plate (16).

9. The detachable and reusable UHPC bridge according to claim 8, characterized in that: A plurality of connecting ears (9) are provided on the side of the first side plate (7) and the second side plate (8) close to each other, and the plurality of connecting ears (9) are fixedly connected to the top inner wall and the bottom inner wall of the I-beam (3) by bolts.

10. The detachable and reusable UHPC bridge according to claim 9, characterized in that: A fixing plate (34) is provided on both sides of the top of two adjacent UHPC bridge panels (2), a fourth fixing rod (37) is fixed between the two adjacent fixing plates (34), a third fixing rod (35) is provided at the bottom of the two fixing plates (34) through a rectangular groove, the outer walls of the two third fixing rods (35) are sleeved with a first hollow metal plate (36), the outer wall of the fourth fixing rod (37) is sleeved with a second hollow metal plate (38), one side of the two rotating baffles (27) is fixed with two first fixing rods (32) through a groove, and the other end of the first hollow metal plate (36) is sleeved on the outer wall of the first fixing rod (32), one side of the rotating baffle (27) is provided with a second fixing rod (33) through a groove, and the other end of the second hollow metal plate (38) is sleeved on the outer wall of the second fixing rod (33).

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