Urban viaduct construction structure crossing expressway

Abstract

The utility model discloses an urban viaduct construction structure crossing expressways. The urban viaduct construction structure comprises guide beams, steel box beams, pushing devices, detachable temporary supporting devices and cushion blocks. The guide beam is arranged at one end of the steel box beam; the steel box girder and the guide beam are placed on the pushing device; the pushing device is placed on the detachable temporary supporting device; the cushion block is placed between the steel box girder and the detachable temporary supporting device; the detachable temporary supporting device comprises a base, a top plate, stand columns and a cross beam. The stand column comprises a connecting plate. The stand columns are oppositely arranged; the base comprises a stand column limiting frame, a base bottom plate and a connecting claw. The connecting claw is arranged on the base bottom plate, and the base bottom plate is connected with the connecting plate through the connecting claw; the stand column is placed in the stand column limiting frame. The stand column limiting frame is placed on the base bottom plate, and the inner wall of the stand column limiting frame abuts against the outwards-expanding face of the stand column. The stability of the whole structure is enhanced, the safety is guaranteed while disassembly is achieved, the construction speed is higher, the construction period can be effectively shortened, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a construction structure of an urban viaduct spanning a highway. Background Art

[0002] With the rapid development of the country's transportation industry, there are more and more expressway branches, and the phenomenon that expressway lines overlap and intersect with existing roads is also increasing. There are also more and more bridges under construction on expressways. It is obvious that steel box girders are used for expressway construction. Most of the existing cross-expressway bridges are constructed by closing the road or occupying the road, which affects urban traffic. At the same time, the overall structure of the existing cross-expressway bridges that do not occupy the road is not stable enough, which leads to safety problems and assembly difficulties in the construction process of steel box girders, affecting the construction and bringing huge pressure on the construction period for the construction project. Utility Model Content

[0003] The utility model provides a city viaduct construction structure spanning a highway to overcome the above technical problems.

[0004] In order to achieve the above purpose, the technical solution of the utility model is:

[0005] A construction structure of an urban viaduct across a highway, comprising: a guide beam, a steel box beam, a jacking device, a plurality of detachable temporary support devices and a pad;

[0006] The multiple steel box beams are connected end to end, and the guide beam is arranged at one end of the steel box beam; the steel box beam comprises a multi-section steel box beam body; the steel box beam body and the guide beam are placed on the jacking device; the jacking device is placed on the detachable temporary support device; the pad is placed between the steel box beam and the detachable temporary support device;

[0007] The multiple detachable temporary support devices include: a base, a top plate, columns and a crossbeam; multiple columns are erected on the base; the crossbeam is arranged between adjacent columns; the top plate is placed on the top of multiple columns; the columns include: a connecting plate; multiple columns are arranged opposite to each other;

[0008] The base comprises: a column limiting frame, a base bottom plate and a connecting claw; the connecting claw is arranged on the base bottom plate, and the base bottom plate and the connecting plate are connected through the connecting claw;

[0009] The column is placed in the column limiting frame; the column limiting frame is placed on the bottom plate of the base, and the inner wall of the column limiting frame abuts against the outwardly expanded side of the column.

[0010] Furthermore, the column limiting frame is divided into a first column limiting frame and a second column limiting frame, and the first column limiting frame and the second column limiting frame are both provided with connecting holes, and the first column limiting frame and the second column limiting frame are connected by bolts through the connecting holes.

[0011] Furthermore, the connecting claw is provided with a screw hole and is connected to the connecting plate by bolts.

[0012] Furthermore, the push device includes: a vertical push structure and a horizontal push-pull structure, the vertical push structure includes: a large piston, a drive assembly, a limit housing, and a main housing; the horizontal push-pull structure includes: a horizontal push electric cylinder body, a horizontal push electric cylinder support rod, and an oblique push assembly;

[0013] The limiting housing is placed inside the main housing and abuts against the inner wall of the main housing; the driving assembly is placed inside the limiting housing to support the large piston to move up and down;

[0014] One end of the horizontal push electric cylinder support rod is connected to the oblique push assembly, and the other end of the horizontal push electric cylinder support rod is connected to the horizontal push electric cylinder cylinder body; the other end of the horizontal push electric cylinder cylinder body is connected to the main shell; the oblique push assembly is used to obliquely support the horizontal push electric cylinder support rod.

[0015] Furthermore, the oblique push assembly includes: an oblique block, an oblique push support rod, an oblique push support block, a base support rod, and a serrated support; the serrated support is provided with a plurality of the base support rods, the other ends of the plurality of base support rods are connected to one end of the oblique push support block, the other end of the oblique push support block is connected to one end of the oblique push support rod; the other end of the oblique push support rod is connected to one end of the oblique block; the other end of the oblique block is connected to one end of the horizontal push electric cylinder support rod.

[0016] Furthermore, the multiple saw teeth on the sawtooth support are in the same inclination direction as the base support rod and the oblique push support rod.

[0017] Further, it also includes: an anti-throwing net and a protective installation device;

[0018] The anti-throwing net is arranged between the multiple detachable temporary supporting devices and between the detachable temporary supporting devices and the bridge piers; the protective installation device comprises: a retaining ring shell, a hanging ear, a connecting ear, and a supporting claw;

[0019] The outer side of the retaining ring shell is provided with the hanging ear, and the hanging ear is used to install the anti-throwing net;

[0020] The retainer shell comprises a first retainer shell and a second retainer shell; the first retainer shell can be detachably connected to the second retainer shell through the connecting ear and is sleeved on the outer side of the pier;

[0021] The support claw is a structure with multiple sections connected, and two adjacent sections of the support claw are detachably connected. There are multiple support claws, and the multiple support claws are used to support the retaining ring shell.

[0022] Furthermore, it also includes: an anti-collision layer;

[0023] The anti-collision layer is arranged on the inner side of the guard ring shell.

[0024] Furthermore, two adjacent sections of the supporting claws are connected by threads.

[0025] Furthermore, the supporting claw further includes a gasket;

[0026] The gasket is arranged between two adjacent sections of the supporting claw.

[0027] The utility model discloses a construction structure of an urban viaduct spanning a highway. A plurality of detachable temporary support devices are arranged on both sides of the highway to reinforce the base. The base comprises: a column limit frame, a base bottom plate and a connecting claw. The base volume and weight are increased and the center of gravity of the structure is lowered. A push device and a pad are arranged on the detachable temporary support device to enhance the stability of the overall construction structure of the bridge spanning the highway. The support device can be disassembled while ensuring safety. At the same time, the construction speed is faster, the construction period can be effectively shortened and the construction cost can be saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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 some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 This is a schematic diagram of the overall structure of a construction structure of an urban viaduct across a highway according to the utility model;

[0030] Figure 2 This is a top view of the construction structure of an urban viaduct across a highway according to the utility model;

[0031] Figure 3 This is a schematic diagram of the overall structure of the detachable temporary support device of the utility model;

[0032] Figure 4 This is a schematic diagram of the base of the detachable temporary support device of the utility model;

[0033] Figure 5 This is a schematic diagram of the base plate of the detachable temporary support device of the utility model

[0034] Figure 6 This is a schematic diagram of a column limit frame of a detachable temporary support device of the utility model;

[0035] Figure 7 This is a schematic diagram of the column structure of the detachable temporary support device of the utility model;

[0036] Figure 8 This is a schematic diagram of the overall structure of the push device of the utility model;

[0037] Fig. 9 It is a structural schematic diagram of the vertical pushing structure of the pushing device of the utility model;

[0038] Fig.10 This is a structural schematic diagram of the horizontal push-pull structure of the push device of the utility model;

[0039] Fig.11 This is an overall schematic diagram of the protective installation device of the utility model;

[0040] Fig.12 It is a structural schematic diagram of one section of the supporting claw of the protective installation device of the utility model;

[0041] Fig.13 It is a schematic diagram of a top view of the structure of one section of the supporting claw of the protective installation device of the utility model;

[0042] Fig.14 It is a partial enlarged view of the connecting ear structure of the protective installation device of the utility model;

[0043] Fig.15 The utility model is a schematic diagram of the installation of the protective installation device on the bridge pier.

[0044] Fig.16 It is a schematic diagram of the placement of the jacking device and the cushion block of the utility model.

[0045] In the figure, 1, guide beam; 2, steel box beam; 3, jacking device; 4, removable temporary support device; 5, anti-throwing net; 6, protective installation device; 7, pad; 8, bridge pier; 9, expressway; 41, base; 42, top plate; 43, diagonal brace; 44, crossbeam; 45, column; 46, warning yellow light; 311, jack; 312, large piston; 313, fixing block; 314, support block; 315 electric cylinder support rod; 316 electric cylinder body; 317, limit shell; 318, main shell; 319, lubricating paper ; 321, cylinder body of horizontal push electric cylinder; 322, support rod of horizontal push electric cylinder; 323, oblique block; 324, oblique push support rod; 325, oblique push support rod; 326, support rod of base; 327, serrated support; 47, power supply; 48, electric wire; 411, column limit frame; 412, bottom plate of base; 413, connecting claw; 441, connecting plate; 61, anti-collision layer; 62, guard ring shell; 63, hanging ear; 64, connecting ear; 65, supporting claw; 66, gasket; 641, connecting plate; 642, connecting bolt. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0047] This embodiment provides a construction structure of an urban viaduct across a highway, such as Figure 1 and Figure 7 As shown, it includes: a guide beam 1, a steel box beam 2, a jacking device 3, a plurality of detachable temporary support devices 4, and a cushion block 7;

[0048] The multiple steel box beams 2 are connected end to end, and the guide beam 1 is arranged at one end of the steel box beam 2; the steel box beam 2 includes a multi-section steel box beam body; the steel box beam body and the guide beam 1 are placed on the jacking device 3; the jacking device 3 is placed on the detachable temporary support device 4; the cushion block 7 is placed between the steel box beam 2 and the detachable temporary support device 4;

[0049] The multiple detachable temporary support devices 4 include: a base 41, a top plate 42, columns 44 and a crossbeam 45; the multiple columns 44 stand on the base 41; the crossbeam 45 is arranged between adjacent columns 44; the top plate 42 is placed on the top of the multiple columns 44; the columns 44 include: a connecting plate 441; the multiple columns 44 are arranged opposite to each other;

[0050] The base 41 includes: a column limiting frame 411, a base bottom plate 412 and a connecting claw 413; the connecting claw 413 is arranged on the base bottom plate 412, and the base bottom plate 412 is connected to the connecting plate 441 through the connecting claw 413;

[0051] The column 44 is placed in the column limiting frame 411 ; the column limiting frame 411 is placed on the base bottom plate 412 , and the inner wall of the column limiting frame 411 abuts against the outwardly expanded side of the column 44 .

[0052] Specifically, during construction, the base bottom plate 412 is first moved to a suitable position, and then the column 44 is erected on the connecting claw 413. The column is an I-beam structure with a plurality of connecting holes. The column 44 is provided with a connecting plate 441, and the connecting plate 441 and the connecting claw 413 are connected by high-strength bolts; after the connection, the first limit frame of the column and the second limit frame of the column are placed on the base bottom plate 412 and compacted with concrete, and abutted against the outwardly expanded side of the column, that is, the side bent outward, and the first limit frame of the column and the second limit frame of the column are connected with high-strength bolts to obtain the base 41; repeat the above steps until the construction requirements are met, and then connect the cross beam 45, the diagonal brace 43, and the top plate 42 to the column to obtain the multiple detachable temporary support devices 4, and place the multiple detachable temporary support devices 4 on both sides of the highway 9 in the width direction, and use a crane to place the jacking device 3 and the cushion block 7 on the top plate 42, and place them according to the construction requirements. Use a crane to lift structure 1 and structure 2 to the top of the jacking device 3, and open holes at the top and connect them with high-strength bolts. Push the guide beam 1 and the steel box beam 2 forward and drop them onto the jacking device 3 of the next detachable temporary support device 4. Finally, place the guide beam 1 and the steel box beam 2 on the pier 8. During the operation of the jacking device 3, the guide beam 1 also needs to be connected to the detachable temporary support device 4 in sequence until the construction requirements are met.

[0053] In a specific embodiment, Figure 5 As shown, the connecting claw 413 is an embedded part and is arranged inside the base bottom plate 412 .

[0054] The purpose of using the base bottom plate 412 is to increase the weight of the base 41 to prevent the overall support structure from falling apart due to the heavy weight of the support, and also to provide a connection for the column 44; the connecting claw 413 is pre-buried inside the base bottom plate 412 to connect with the column 44, so that the column 44 and the base bottom plate 412 are connected more closely to ensure the stability of the overall support system.

[0055] In a specific embodiment, Figure 4 and Figure 6As shown, the column limit frame 411 is divided into a first column limit frame and a second column limit frame, the first column limit frame and the second column limit frame are provided with connecting holes at the top and bottom, and the first column limit frame and the second column limit frame are connected by bolts and nuts through the connecting holes; fixed blocks are provided between the columns in the limit frame to fix the columns so that they do not bend inward.

[0056] The first column limit frame and the second column limit frame are added to the base bottom plate 412 to increase the stability of the column 44 and prevent the column 44 from excessively bending outward or even breaking due to excessive weight during construction.

[0057] In a specific embodiment, Figure 5 As shown, the connecting claw 413 is provided with a screw hole and is connected to the connecting plate 441 by high-strength bolts.

[0058] The connecting claw 413 is provided with a screw hole, so that the column 44 and the base 41 can be connected more tightly using high-strength bolts.

[0059] In a specific embodiment, Figure 3 As shown, it also includes: a diagonal brace 43;

[0060] The diagonal braces 43 connect the adjacent columns 44 to form a triangular structure with the adjacent columns 44 .

[0061] In this embodiment, the diagonal brace 43 is connected at a 45-degree angle and is an angle steel structure. A connecting hole is provided on the diagonal brace 43 and a connecting hole is provided on the column 44. The diagonal brace 43 and the column 44 are fixed by high-strength bolts through the connecting holes.

[0062] In a specific embodiment, Figure 3 As shown, it also includes: a warning yellow light 46, a power supply 47, and an electric wire 48;

[0063] In this embodiment, the yellow warning light 46 is disposed at the connection between the crossbeam 45 and the adjacent column 44;

[0064] The electric wire 48 is divided into two, one end of each electric wire 48 is connected to the power source 47 , and the other end of the electric wire 48 is connected to the warning yellow light 46 .

[0065] The yellow warning light 46 is provided to warn drivers at night and to provide a safety guarantee for driving on the construction highway at night.

[0066] In a specific embodiment, Figure 8As shown, the pushing device includes a vertical pushing structure and a horizontal pushing and pulling structure. The vertical pushing structure includes: a large piston 312, a driving assembly, a limit housing 317, and a main housing 318; the horizontal pushing and pulling structure includes: a horizontal pushing electric cylinder body 321, a horizontal pushing electric cylinder support rod 322, and an oblique pushing assembly;

[0067] The limiting housing 317 is placed inside the main housing 318 and abuts against the inner wall of the main housing 318; the driving assembly is placed inside the limiting housing 317 and abuts against the large piston 312 to support the large piston 312 to move up and down;

[0068] One end of the horizontal push electric cylinder support rod 322 is connected to the oblique push assembly, and the other end of the horizontal push electric cylinder support rod 322 is connected to the horizontal push electric cylinder cylinder body 321; the other end of the horizontal push electric cylinder cylinder body 321 is connected to the main shell 318; the oblique push assembly is used to obliquely support the horizontal push electric cylinder support rod 322.

[0069] In a specific embodiment, the scheme of the oblique thrust assembly is:

[0070] The oblique thrust assembly includes: an oblique block 323, an oblique thrust support rod 324, an oblique thrust support block 325, a base support rod 326, and a serrated support 327; a plurality of base support rods 326 are provided on the serrated support 327, the other ends of the plurality of base support rods 326 are fixedly connected to one end of the oblique thrust support block 325, and the other end of the oblique thrust support block 325 is fixed to one end of the oblique thrust support rod 324; the other end of the oblique thrust support rod 324 is fixed to one end of the oblique block 323; the other end of the oblique block 323 is hinged to the horizontal thrust cylinder support rod 322.

[0071] By providing a plurality of support rods and support blocks which are inclined in the same direction, a more stable supporting force can be provided, so that the oblique push assembly is more stable and the lateral push and pull process is smoother.

[0072] In a specific embodiment, the scheme of the sawtooth support 327 is:

[0073] like Fig.10 As shown, the sawtooth support 327 and the multiple saw teeth are inclined in the same direction as the base support rod 326 and the oblique push support rod 324 .

[0074] The sawtooth support 327 is provided with a plurality of saw teeth, and the saw teeth are in the same inclination direction as the base support rod 326 and the oblique push support rod 324, which can increase the friction between the lateral push-pull structure and the contact surface and improve the stability of the push-pull process of the lateral push-pull structure.

[0075] In a specific embodiment, the scheme of the drive assembly is:

[0076] like Fig. 9 As shown, the driving assembly includes: a support block 314 , an electric cylinder support rod 315 , and an electric cylinder body 316 ; one end of the support block 314 abuts against the large piston 312 , and the other end is connected to the electric cylinder support rod 315 .

[0077] The electric cylinder that uses the electric cylinder support rod 315 and the electric cylinder body 316 as one body can perform linear motion up and down, making the pushing process more stable.

[0078] In a specific embodiment, the portion of the large piston 312 that moves outside the limiting shell 317 abuts against the opening of the limiting shell 317 ; the portion of the large piston 312 that moves inside the limiting shell 317 abuts against the inner wall of the limiting shell 317 .

[0079] The large piston 312 is arranged to abut against the opening and the inner wall of the limiting shell, so as to ensure that the large piston does not deviate during the pushing process and the speed is more stable.

[0080] In a specific embodiment, the vertical pushing structure 31 also includes: a push head 311, a fixed block 313, and a lubricating paper 319; the push head 311 is placed on the large piston 312; the fixed block 313 is placed inside the limiting shell 317 and abuts against the inner wall of the limiting shell 317; the lubricating paper 319 is arranged at the bottom of the main shell 318.

[0081] The fixing block 313 is arranged in the limiting shell 317, which can further ensure the structural stability of the limiting shell 317 and the main shell 318, and provide balance for the large piston 312 during the descending process of the large piston 312; the lubricating paper 319 is arranged at the bottom of the main shell 318, which can effectively avoid the adverse effects of the vertical pushing device 31 on the contact surface during the pushing and pulling process, reduce friction, ensure the smooth progress of the pushing process, and improve the service life of the device.

[0082] In a specific embodiment, it also includes a plurality of anti-throwing nets and protective installation devices;

[0083] like Figure 1 As shown, the plurality of anti-throwing nets 5 are arranged between the plurality of detachable temporary supporting devices 4 and between the detachable temporary supporting devices 4 and the bridge pier 8; the protective installation device is as shown in FIG. Fig.11 and Fig.15 As shown, it includes: a retaining ring shell 62, a hanging ear 63, a connecting ear 64, and a supporting claw 65. In this embodiment, the retaining ring shell 62 is a ring structure;

[0084] The outer side of the retaining ring housing 62 is provided with the hanging ear 63, and the hanging ear 63 is used to install the anti-throwing net;

[0085] The retainer shell 62 includes a first retainer shell and a second retainer shell; the first retainer shell can be detachably connected to the second retainer shell through the connecting ear 64, and is sleeved on the outer side of the pier;

[0086] The supporting claw 65 is a structure with multiple sections connected. Two adjacent sections of the supporting claw 65 can be detachably connected. There are multiple supporting claws 65, and the multiple supporting claws 65 are used to support the retaining ring shell 62.

[0087] In a specific embodiment, the solution of the hanging ear 63 is:

[0088] There are four hanging ears 63 in total, which are respectively arranged at the connection between the first retaining ring shell and the second retaining ring shell and are hook structures.

[0089] The four hanging ears 63 are provided to suspend the anti-throwing net at multiple points, so that the anti-throwing net is more stable after installation.

[0090] In a specific embodiment, the scheme of the connecting ear 64 is:

[0091] The connecting ear 64 includes a connecting plate 641 and a connecting bolt 642. The first retainer housing and the second retainer housing are both provided with the connecting plate 641. The connecting plate 641 is provided with a connecting through hole. The connecting bolt 642 passes through the connecting plate to connect the first retainer housing and the second retainer housing.

[0092] like Fig.11 and Fig.14 As shown, in this embodiment, three groups of connecting ears 64 are provided on the first retaining ring shell and the second retaining ring shell.

[0093] A connecting plate 641 is provided on the first retaining ring shell and the second retaining ring shell without destroying the structure of the retaining ring shell 62. The first retaining ring shell and the second retaining ring shell are connected using connecting bolts 642, which is easy to operate. Three sets of connecting ears are provided, and the structure is more stable when in use.

[0094] In a specific embodiment, Figure 1 As shown, it also includes: an anti-collision layer 61;

[0095] The anti-collision layer 61 is disposed inside the retaining ring shell 62 .

[0096] An anti-collision layer 61 is provided. During the rising process of the guard ring shell 42, the inside of the guard ring shell will generate friction with the bridge pier, thereby damaging the surface of the bridge pier. During the construction process, the anti-throwing net will move when catching objects falling from above the bridge pier, and the side of the suspension structure in contact with the bridge pier will also generate friction, thereby causing damage to the bridge pier. The provision of an anti-collision layer 61 can reduce the damage of the protective structure to the bridge pier during the overall construction process, thereby increasing the service life of the protective structure.

[0097] In a specific embodiment, the solution of the supporting claw 65 is:

[0098] The supporting claw 65 is a structure with multiple sections connected, such as Figure 2 As shown, one end of each section is a stud and the other end is a threaded hole, and the threaded hole matches the stud; two adjacent sections of the supporting claw 65 are connected by a threaded structure.

[0099] The support claw 65 is connected by a threaded structure, and the number of sections of the support claw 65 is adjusted according to the bridge pier of any height. At the same time, the connection method is to connect from the bottom to the top in sequence, which can reduce the danger of personnel installing the anti-throwing net, and the installation is simple and convenient to disassemble.

[0100] In a specific embodiment, the support claw 65 further includes a gasket 66;

[0101] like Fig.12 and Fig.13 As shown, the gasket 66 is disposed between two adjacent sections of the supporting claw 65 .

[0102] The gasket 66 is arranged between two adjacent sections of the support claw 65, which can increase the friction between the two adjacent sections of the support claw 65, improve the stability of the support claw 65, avoid wear caused by direct contact between the cross sections of the two adjacent sections of the support claw 65, avoid loose connection between the two adjacent sections of the support claw after wear, and increase the service life of the support claw 65.

[0103] When constructing a bridge across a highway, first install the base 41, then connect the columns 44 to obtain a detachable temporary support device 4; secondly, hang the anti-throw net 5 and install the protective installation device 6; finally, place the jacking device 3, the cushion block 7 and the beam-dropping jack on the detachable temporary support device 4 to transport the guide beam 1 and the steel box beam 2.

[0104] First, install the base 41, and the specific process is as follows:

[0105] First, according to the design drawings, the base plate 412 is moved to the predetermined positions on both sides of the highway in the width direction, and then two columns 44 are erected on the connecting claws 413 through the connecting plates 441, and are connected with high-strength bolts through the screw holes provided on the connecting plates 441 and the connecting claws 413. After the columns 44 and the connecting claws 413 are connected, a pair of column limit frames 411 are placed on the base plate 412, abutted against the columns 44, and connected with concrete, and then the pair of column limit frames 411 are connected with high-strength bolts through the connecting holes on the column limit frames 411, thereby obtaining the base 41. Repeat the above steps to install multiple bases 41 until the number of bases 41 meets the construction requirements.

[0106] The columns 44 are connected to obtain the detachable temporary support device 4, and the specific process is as follows:

[0107] After fixing multiple bases 41, connect the adjacent columns 44 according to actual requirements, use the crossbeam 45 to connect the middle of the column 44, and the crossbeam is provided with a connection hole, which is fixed by high-strength bolts. Then connect the diagonal brace 43 between the two columns 44 at a 45-degree angle and fix it with high-strength bolts. Finally, use a crane to lift the top plate 42 onto the column 44. The top plate 42 is provided with connection holes on the four sides, and the top of the column 44 is provided with a connection plate, and the connection hole is provided on the connection plate. And fix it with high-strength bolts through the connection hole between the top plate 42 and the column 44. In order to serve as a warning at night, warning yellow lights 46 are respectively set up on both sides of the crossbeam 45, and a power supply 47 and a wire 48 are placed for power supply, so as to obtain a support structure, and repeat the above steps to install multiple detachable temporary support devices 4 until the temporary support device 4 is disassembled to meet the construction requirements.

[0108] Install the anti-throwing net and protective installation device. The specific process is as follows:

[0109] The column 44 is provided with a hanging ear for hanging the anti-throwing net 5. First, one side of the anti-throwing net 5 is connected to the column 44, and the other side is connected to the hanging ear 63. After the anti-throwing nets are installed on the hanging ears 53 on both sides, the first retaining ring shell and the second retaining ring shell are installed on the bridge pier, and the connecting bolts are connected to the first retaining ring shell and the second retaining ring shell through the connecting ear 64 to form a ring structure sleeved on the bridge pier. After the connection is completed, the multiple sections of the support claws 65 are connected simultaneously in three directions, and the retaining ring shell 62 is raised linearly by manual or lifting equipment. As the retaining ring shell rises, the support claws are installed until the height of the protective structure meets the requirements of hanging the anti-throwing net.

[0110] The process of placing the jacking device 3 and the pad 7 and transporting the guide beam 1 and the steel box beam 2 is as follows:

[0111] Use a crane to lift the jacking device 3 and the cushion block 7 onto the top plate 42 and place them according to the construction requirements. Fig.16 As shown, the guide beam 1 and the steel box beam 2 are hoisted to the top of the jacking device by a crane, and a connection hole is opened on the jacking head, and the guide beam and the steel box beam are connected to the jacking head by high-strength bolts. After the connection is completed, the electric cylinder is energized, and the jacking head 311 and the large piston 312 are jacked up through the electric cylinder support rod and the support block, so as to achieve the effect of jacking up the guide beam 1 and the steel box beam 2. After the guide beam 1 and the steel box beam 2 are jacked up, the horizontal push electric cylinder is energized, and the horizontal push electric cylinder support rod 322 and the horizontal push electric cylinder body 321 are pushed forward to push the vertical jacking structure and the guide beam 1 and the steel box beam 2 forward. After reaching the maximum pushing distance, the electric cylinder controls the jacking head and the large piston to slowly fall, and the guide beam 1 and the steel box beam 2 are placed on the jacking device 3 and the pad 7 on the next support structure 4. The above operation is repeated, and finally the guide beam 1 and the steel box beam 2 are moved to the specified position, and then the horizontal push electric cylinder controls the horizontal push electric cylinder support rod 322 to pull back the vertical jacking structure, and the above operation is repeated until the construction requirements are met. During the operation of the jacking device 3, the guide beam 1 also needs to be connected to the support structure 4 in sequence until the construction requirements are met. When the guide beam 1 and the steel box beam 2 are pushed to the predetermined position, the guide beam 1 is removed, and the steel box beam 2 is lifted up by the jacking device 3, and the pad 7 is removed; after the steel box beam 2 is lifted up by the beam drop jack, the jacking device 3 is removed. The steel box beam 2 is built on the bridge pier 8 by the beam drop jack, and the temporary support structure 4 and the beam drop jack are used. Finally, the bridge is cast.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A construction structure of an urban viaduct across a highway, characterized in that: include: A guide beam (1), a plurality of steel box beams (2), a plurality of jacking devices (3), a plurality of detachable temporary supporting devices (4), and a plurality of cushion blocks (7); The multiple steel box beams (2) are connected end to end, and the guide beam (1) is arranged at one end of the multiple steel box beams (2); the multiple steel box beam bodies and the guide beam (1) are placed on the multiple jacking devices (3); the multiple jacking devices (3) are placed on the multiple detachable temporary support devices (4); the multiple pads (7) are placed between the multiple steel box beams (2) and the multiple detachable temporary support devices (4); The plurality of detachable temporary support devices (4) include: a base (41), a top plate (42), columns (44) and a crossbeam (45); the plurality of columns (44) are erected on the base (41); the crossbeam (45) is arranged between adjacent columns (44); the top plate (42) is placed on the top of the plurality of columns (44); the columns (44) include: a connecting plate (441); the plurality of columns (44) are arranged opposite to each other; The base (41) comprises: a column limiting frame (411), a base bottom plate (412) and a connecting claw (413); the connecting claw (413) is arranged on the base bottom plate (412), and the base bottom plate (412) and the connecting plate (441) are connected via the connecting claw (413); The column (44) is placed in the column limiting frame (411); the column limiting frame (411) is placed on the base bottom plate (412), and the inner wall of the column limiting frame (411) abuts against the outwardly expanded side of the column (44).

2. The urban viaduct construction structure across a highway according to claim 1, characterized in that: The column limiting frame (411) is divided into a first column limiting frame and a second column limiting frame, and the first column limiting frame and the second column limiting frame are both provided with connecting holes, and bolts connect the first column limiting frame and the second column limiting frame through the connecting holes.

3. The urban viaduct construction structure across a highway according to claim 1, characterized in that: Also includes: An oblique brace (43), wherein the oblique brace (43) connects adjacent columns (44) to form a triangular structure with the adjacent columns (44).

4. The urban viaduct construction structure across a highway according to claim 1, characterized in that: The plurality of pushing devices (3) include: a vertical pushing structure and a horizontal pushing and pulling structure, wherein the vertical pushing structure includes: a large piston (312), a driving assembly, a limiting housing (317), and a main housing (318); the horizontal pushing and pulling structure includes: a horizontal pushing electric cylinder body (321), a horizontal pushing electric cylinder support rod (322), and an oblique pushing assembly; The limiting housing (317) is placed inside the main housing (318) and abuts against the inner wall of the main housing (318); the driving assembly is placed inside the limiting housing (317) and is used to support the large piston (312) to move up and down; One end of the horizontal push electric cylinder support rod (322) is connected to the oblique push assembly, and the other end of the horizontal push electric cylinder support rod (322) is connected to the horizontal push electric cylinder body (321); the other end of the horizontal push electric cylinder body (321) is connected to the main housing (318); the oblique push assembly is used to support the horizontal push electric cylinder support rod (322) in an inclined manner.

5. The urban viaduct construction structure across the expressway according to claim 4, characterized in that: The oblique thrust assembly comprises: an oblique block (323), an oblique thrust support rod (324), an oblique thrust support block (325), a base support rod (326), and a sawtooth support (327); the sawtooth support (327) is provided with a plurality of base support rods (326), the other ends of the plurality of base support rods (326) are connected to one end of the oblique thrust support block (325), and the other end of the oblique thrust support block (325) is connected to one end of the oblique thrust support rod (324); the other end of the oblique thrust support rod (324) is connected to one end of the oblique block (323); and the other end of the oblique block (323) is connected to one end of the horizontal thrust electric cylinder support rod (322).

6. The urban viaduct construction structure across the expressway according to claim 5, characterized in that: The multiple saw teeth on the sawtooth support (327) are in the same inclination direction as the base support rod (326) and the oblique push support rod (324).

7. The urban viaduct construction structure across a highway according to claim 1, characterized in that: Also includes: A plurality of anti-throwing nets (5) and protective mounting devices (6); The plurality of anti-throwing nets (5) are arranged between the plurality of detachable temporary supporting devices (4) and between the detachable temporary supporting devices (4) and the bridge pier (8); the protective installation device (6) comprises: a retaining ring shell (62), a hanging ear (63), a connecting ear (64), and a supporting claw (65); The outer side of the retaining ring shell (62) is provided with the hanging ear (63), and the hanging ear (63) is used to install the anti-throwing net (5); The retaining ring shell (62) comprises a first retaining ring shell and a second retaining ring shell; the first retaining ring shell can be detachably connected to the second retaining ring shell through the connecting ear (64) and is sleeved on the outside of the pier (8); The support claw (65) is a structure with multiple sections connected, and two adjacent sections of the support claw (65) are detachably connected. There are multiple support claws (65), and the multiple support claws (65) are used to support the retaining ring shell (62).

8. The urban viaduct construction structure across the expressway according to claim 7, characterized in that: It also includes an anti-collision layer (61), wherein the anti-collision layer (61) is arranged on the inner side of the retaining ring shell (62).

9. The urban viaduct construction structure across a highway according to claim 7, characterized in that: Two adjacent sections of the supporting claws (65) are connected by threads.

10. The urban viaduct construction structure across a highway according to claim 7, characterized in that: The supporting claw (65) further comprises a gasket (66); the gasket (66) is arranged between two adjacent sections of the supporting claw (65).

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