Eave trough structure for bridge deck drainage in marine environment

Abstract

The present application provides a kind of eaves trough structure for bridge deck drainage under marine environment, including anchoring system, cantilever system, it is characterized in that further include: drainage assembly, protection system, expansion joint control component;The anchoring system includes upper anchoring component, lower anchoring component;The cantilever system includes transverse cantilever beam, U type cantilever framework;The drainage assembly includes the drainage ditch of section U shape;The drainage ditch is sequentially spliced by several drainage channels, and expansion joint is set at every interval 40-60m position on drainage ditch;The protection system includes cover plate and eaves board, which are arranged along the drainage direction of drainage ditch.The eaves trough structure of the present application is not only convenient to assemble and disassemble, light and stable in structure, but also can realize long route rapid centralized drainage of bridge deck under heavy rainfall conditions, and has good corrosion resistance and wind resistance performance, which can adapt to bridge deck drainage under severe marine environment.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of bridge deck drainage, and particularly relates to a cornice trough structure for bridge deck drainage in a marine environment. BACKGROUND

[0002] In the bridge construction in China, bridge deck drainage is usually achieved by pre-burying a water outlet hole at the side of a driving lane, and rainwater is collected into the water outlet hole and then into a longitudinal drainage pipe, and is discharged to ground drainage facilities through a downpipe at a pier, and is discharged into a nearby water area after filtration and purification.

[0003] The Abidjan Four Bridges project has a Banco Bay Bridge crossing a bay, with a total length of about 1400m, and adopts a double-width design, and the bridge is divided into three parts: a Banco Bay main bridge, a Boribana viaduct, and a north-south ramp bridge, the main bridge has a single-width bridge deck width of 16.65m, the Boribana viaduct has a single-width bridge deck width of 15m, and the north-south ramp bridge has a bridge deck width of 11.55m. Bridge deck rainwater drainage needs to be collected through a drainage system, and is discharged into the Banco Bay after filtration and purification. According to the drainage design requirements, the bridge deck drainage of about 800m-long Banco main bridge needs to be collected and discharged to the west side of the Banco Bay, and the bridge deck drainage of about 600m-long viaduct and north-south ramp bridge needs to be collected and discharged to the east bank of the Banco Bay, and the drainage route is relatively long. Since Abidjan is located in a tropical rainforest climate, it has heavy rain from May to July and light rain from October to November, and the annual precipitation is 2144mm. When the heavy rain season comes, it rains heavily and lasts for a long time, and the instantaneous drainage capacity is large. The bridge is located in a bay, and the climate is humid, and the wind speed is relatively large, so the drainage facilities need to have high requirements for corrosion resistance and wind resistance. The bridge is located in the center of the city, and the drainage facilities need to have high requirements for appearance and environmental protection. According to the above requirements, the commonly used drainage facilities cannot meet the needs. Therefore, it is urgent to design a drainage facility that can not only meet the needs of long-route centralized drainage but also meet the needs of rapid drainage when it rains heavily, and at the same time has the requirements of marine environment corrosion resistance, wind resistance and linear appearance. SUMMARY

[0004] In view of the above problems, the cornice trough structure for bridge deck drainage in a marine environment is provided, and the cornice trough structure is not only convenient to install and disassemble, light and stable in structure, but also can realize rapid centralized drainage of the bridge deck in a heavy rain condition, and has good corrosion resistance and wind resistance, and can adapt to the bridge deck drainage in a harsh marine environment.

[0005] The application is implemented through the following technical scheme.

[0006] The cornice trough structure for bridge deck drainage in a marine environment comprises an anchoring system and a cantilever system, and is characterized in that it further comprises a drainage assembly, a protection system and a expansion joint control assembly.

[0007] The anchoring system comprises an upper anchoring assembly anchored in the concrete on the top surface of the box girder flange plate, and a lower anchoring assembly anchored in the concrete on the side surface of the box girder flange plate and located below the upper anchoring assembly.

[0008] The cantilever system comprises a transverse cantilever beam fixedly connected at one end to the upper anchoring assembly and connected at the other end to the top end of the U-shaped cantilever frame extending to the top surface of the drainage ditch, and a U-shaped cantilever frame having a ring sleeve arranged on the outer wall of the drainage ditch and connected to the lower anchoring assembly at a side close to the box girder flange plate.

[0009] The drainage assembly comprises a U-shaped drainage ditch, and the drainage ditch is formed by sequentially connecting a plurality of drainage channels, and a expansion joint is arranged at every interval of 40-60 m on the drainage ditch.

[0010] The protection system comprises a cover plate and a eave plate arranged along the drainage direction of the drainage ditch; the cover plate is fixedly covered on the upper side of the connection between the transverse cantilever beam and the upper anchoring assembly, and one side of the cover plate is overlapped with the edge of the drainage ditch, and the other side is overlapped with the side surface of the box girder flange plate; the outer surface of the eave plate is arc-shaped, and the eave plate is arranged at a side of the drainage ditch away from the box girder flange plate, and the top end of the eave plate is bent towards the drainage ditch and overlapped with the edge of the drainage ditch.

[0011] The expansion joint control assembly comprises an expansion rubber strip arranged on the outer side of the drainage channel and overlapped with the drainage channel at both ends of the expansion joint, and a connecting plate arranged on the outer side of the expansion rubber strip; one end of the connecting plate and the expansion rubber strip is fixedly connected with the drainage channel at one end of the expansion joint to form a fixed end, and the other end of the connecting plate and the expansion rubber strip is slidingly connected with the drainage channel at the other end of the expansion joint to form a movable end.

[0012] As a specific technical solution, the upper anchoring assembly comprises upper anchoring steel bars, an upper anchoring steel plate and an upper anchoring channel steel; the upper anchoring steel bars and the upper anchoring steel plate are embedded in the concrete on the top surface of the box girder flange plate, and the upper anchoring steel bars are welded to be arranged below the upper anchoring steel plate; one end of the upper anchoring channel steel is embedded in the concrete on the top surface of the box girder flange plate and welded to the upper anchoring steel plate, and the other end is exposed and protrudes from the box girder flange plate and connected to the transverse cantilever beam.

[0013] As a specific technical solution, the lower anchoring assembly comprises a transverse positioning angle steel, a lower anchoring steel plate and a lower anchoring expansion bolt; one end of the transverse positioning angle steel is connected to the U-shaped cantilever frame, and the other end is connected to the lower anchoring steel plate; one end of the lower anchoring expansion bolt is anchored in the concrete on the side surface of the box girder flange plate, and the other end is connected to the lower anchoring steel plate.

[0014] As a specific technical solution, the drainage assembly further comprises a lower outlet arranged at the lower end of the drainage ditch, end head sealing plates arranged at both ends of the drainage ditch, and overhanging connecting pieces arranged on the outer wall of the drainage groove; one end of the overhanging connecting piece is connected with the outer wall of the drainage groove, and the other end is connected with the U-shaped overhanging framework.

[0015] As a specific technical solution, a splicing joint control assembly is arranged at the splicing joint of adjacent drainage grooves; the splicing joint control assembly comprises a water stop rubber strip and a joint plate arranged on the outer side of the splicing joint in sequence, and a silicone sealant strip filled in the gap of the splicing joint; the two ends of the water stop rubber strip and the joint plate are respectively fixedly connected with the drainage grooves at both ends of the splicing joint.

[0016] As a specific technical solution, the protection system further comprises a partition plate arranged between the eave plate and the U-shaped overhanging framework; one end of the partition plate is connected with the outer side of the U-shaped overhanging framework, and the other end is connected with the inner side of the eave plate.

[0017] As a specific technical solution, a sliding groove and a sliding rod are arranged on the movable end of the connecting plate and the expansion rubber strip, the lower end of the sliding rod is slidably connected with the sliding groove, and the upper end of the sliding rod is fixedly connected with the movable end of the drainage groove, so that the movable end of the connecting plate and the expansion rubber strip can slide left and right relative to the movable end of the drainage groove.

[0018] As a specific technical solution, the movable end and the fixed end at the same expansion joint position are arranged at the upstream and the downstream along the drainage direction of the drainage ditch.

[0019] As a specific technical solution, the contact surface of the U-shaped overhanging framework and the drainage ditch is coated with a mastic sealant for isolation.

[0020] As a specific technical solution, the width of the expansion joint is 3-5 cm, the length of the drainage groove is 2-3 m, and a transverse overhanging beam and a U-shaped overhanging framework are arranged every 1-1.5 m on the drainage ditch 301.

[0021] Compared with the prior art, the present application has the following advantages:

[0022] 1. The drainage performance of the present application is good. In the present application, the cross section of the drainage groove is U-shaped, the cross-sectional area and capacity of the drainage groove are large, and the present application can be applied to bridge deck centralized drainage with high environmental protection requirements, wide water crossing, and long drainage path (i.e. bridge deck rainwater is not allowed to be directly discharged into the nearby water area, and the bridge deck rainwater needs to be collected and discharged into the downpipe at the pier to be discharged to the ground drainage facility after filtration and purification by the oil-water separation tank), and can also meet the rapid drainage of the bridge deck in the rain season to avoid water accumulation and congestion.

[0023] 2、The present application has good corrosion resistance. In the present application, the cover plate and the eave plate can respectively play a protective role on the bolt fastener or the welding part inside and outside the eave trough to prevent rainwater and water in the drainage channel from splashing on the bolt fastener or the welding part to cause corrosion or rust. In addition, the channel steel, angle steel, bolt and connecting plate used in the eave trough structure can be galvanized for corrosion resistance, and the drainage channel, eave plate, partition plate, joint plate and draw-in rivet are all made of aluminum alloy material, which has good corrosion resistance. Rubber gaskets and mastic sealants are arranged on the connecting surfaces of different metal components (galvanized steel and aluminum alloy) to avoid galvanic corrosion. The eave trough structure has good corrosion resistance in harsh environments such as marine areas and extremely humid areas.

[0024] 3、The present application has good wind resistance. In the present application, the eave plate is arranged in an arc shape, which can effectively reduce the transverse wind resistance on the sea surface, and the lower anchoring assembly is anchored on the box girder concrete by expansion bolts, which can effectively resist the wind pressure on the upper and bottom parts of the eave trough.

[0025] 4、The present application has stable structure. In the present application, the drainage channel is fixed by the combined action of the anchoring system and the cantilever system. The transverse cantilever beam, the U-shaped cantilever skeleton and the upper anchoring assembly cooperate to bear the weight of the structure and the water in the water channel, and the U-shaped cantilever skeleton and the lower anchoring assembly cooperate to bear the lateral pressure of the eave trough and the wind tension at the bottom of the eave trough, so that the eave trough structure of the present application can maintain the stability of the structure under the condition of strong wind in the ocean, long distance and large amount of drainage. In addition, the anchoring system, the cantilever system, the drainage assembly, the protection system, the expansion joint control assembly, and the bolt and rivet are all safe and reliable through detailed stress calculation.

[0026] 5、The present application is convenient to assemble and disassemble, has light structure and wide application range. The eave trough structure of the present application is simple, easy to install and maintain, and the bolt holes can be designed as strip holes for easy installation and adjustment. In addition, except for the components with large anchoring and cantilever stress, the rest are all aluminum alloy structures, which effectively reduce the dead load of the structure and the constant load of the bridge, and can be completed without lifting equipment during assembly and disassembly. At the same time, the present application can adjust the size of the eave trough according to the actual situation such as the width of the bridge deck, the length of the drainage path and the instantaneous maximum rainfall. For example, the present bridge is provided with three types of eave trough structures with sizes of 60cm*60cm, 50cm*50cm and 40cm*40cm according to the drainage needs of different bridge deck widths and drainage path lengths. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a front view structural diagram of the eave trough structure of the present application;

[0028] Figure 2 It is a top view of the present application;

[0029] Figure 3 The plan view of the invention without cover plate and eave plate;

[0030] Figure 4 The schematic diagram of the eave plate groove structure of the invention;

[0031] Figure 5 The plan view of the drainage assembly in the invention;

[0032] Figure 6 The schematic diagram of the arrangement position of the eave plate groove structure on the bridge deck in the invention;

[0033] Figure 7 The front view of the U-shaped cantilever skeleton;

[0034] Figure 8 The plan view of the U-shaped cantilever skeleton;

[0035] Figure 9 The schematic diagram of the main view structure of the joint control assembly;

[0036] Figure 10 The left view of the joint control assembly;

[0037] Figure 11 The schematic diagram of the connection structure of the joint control assembly, the flashing rubber strip, the joint plate and the silicone sealant strip;

[0038] Figure 12 The schematic diagram of the main view structure of the expansion joint control assembly;

[0039] Figure 13 The left view of the expansion joint control assembly;

[0040] Figure 14 The schematic diagram of the connection structure of the expansion joint control assembly, the expansion rubber strip, the connecting plate, the sliding groove and the sliding rod;

[0041] The meanings of the various marks in the above-mentioned diagrams are as follows:

[0042] Anchoring system 1, upper anchoring assembly 101, upper anchoring steel bar 1011, upper anchoring steel plate 1012, upper anchoring channel steel 1013, lower anchoring assembly 102, transverse positioning angle steel 1021, lower anchoring steel plate 1022, lower anchoring expansion bolt 1023;

[0043] Cantilever system 2, transverse cantilever beam 201, U-shaped cantilever skeleton 202;

[0044] Drainage assembly 3, drainage ditch 301, lower water inlet 302, end sealing plate 303, drainage groove 304, cantilever connecting piece 305;

[0045] Protective system 4, cover plate 401, partition plate 402, eave plate 403, first connecting plate 404, second connecting plate 405;

[0046] Expansion joint control assembly 5, expansion rubber strip 501, connecting plate 502, fixed end 503, movable end 504, sliding groove 505, sliding rod 506;

[0047] Splice joint control assembly 6, water stop rubber strip 601, joint plate 602, silicone sealant strip 603;

[0048] Box girder flange plate 7;

[0049] Expansion joint 8. DETAILED DESCRIPTION

[0050] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0051] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0052] Embodiment 1

[0053] Eave trough structure for bridge deck drainage in marine environment, please refer to Figures 1 to 14 , including anchoring system 1, overhang system 2, drainage assembly 3, protective system 4, expansion joint control assembly 5;

[0054] The anchoring system 1 includes an upper anchoring assembly 101 anchored in the concrete on the top surface of the box girder flange plate 5, and a lower anchoring assembly 102 anchored in the concrete on the side surface of the box girder flange plate 7, located below the upper anchoring assembly 101; wherein the upper anchoring assembly is used to bear the main stress of the eave trough overhang, and the lower anchoring assembly is used to bear the lateral pressure of the eave trough and the wind resistance of the bottom of the eave trough;

[0055] The cantilever system 2 comprises a transverse cantilever beam 201 fixedly connected with the upper anchoring assembly 101 at one end and extended to the top surface of the gutter 301 and connected with the top end of the U-shaped cantilever frame 202, the U-shaped cantilever frame 202 is sleeved on the outer wall of the gutter 301 and connected with the lower anchoring assembly 102 at a side close to the box girder flange plate 7, and the U-shaped cantilever frame 202, the transverse cantilever beam 201 and the anchoring system jointly bear the self-weight of the structure and the gravity of water in the water tank;

[0056] The drainage assembly 3 comprises a U-shaped cross-section gutter 301, the gutter 301 is formed by sequentially splicing a plurality of U-shaped cross-section drainage channels 304, preferably, the drainage channels are made of 4mm thick aluminum alloy plates, expansion joints 8 are arranged at positions every 40-60m on the gutter 301, and usually, the splicing joints of the adjacent two drainage channels 304 at the positions every 40-60m are adjusted as the expansion joints for facilitating construction.

[0057] The protection system 4 comprises cover plates 401 and eaves plates 403 arranged along the drainage direction of the gutter 301, the cover plates 401 are fixedly covered on the upper side of the connection between the transverse cantilever beam 201 and the upper anchoring assembly 101, one side of the cover plate 401 is overlapped with the edge of the gutter 301, and the other side is overlapped with the side of the box girder flange plate 7, the cover plate is mainly used for protecting the bolt fasteners or welding parts on the inner side of the eaves plate groove to prevent rainwater and water in the drainage channel from splashing on the bolt fasteners or welding parts, the outer surface of the eaves plate 403 is arc-shaped, the eaves plate 403 is arranged at a side of the gutter 301 away from the box girder flange plate 7, the top end of the eaves plate 403 is bent towards the gutter 301 and overlapped with the edge of the gutter 301, the outer surface of the eaves plate 403 is designed as arc-shaped to effectively reduce the wind resistance, and the top end of the eaves plate is overlapped with the edge of the gutter to play a similar protection role as the cover plate, so as to protect the bolt fasteners or welding parts on the outer side of the eaves plate groove to prevent rainwater and water in the drainage channel from splashing on the bolt fasteners or welding parts, and in addition, the eaves plate plays a role in beautifying the appearance.

[0058] The expansion joint control assembly 5 comprises expansion rubber strips 501 arranged on the outer side of the drainage channel and overlapped with the drainage channel at both ends of the expansion joint, and connecting plates 502 arranged on the outer side of the expansion rubber strips 501, one end of the connecting plate 502 and the expansion rubber strip 501 is fixedly connected with the drainage channel at one end of the expansion joint to form a fixed end 503, the other end of the connecting plate 502 and the expansion rubber strip 501 is slidably connected with the drainage channel at the other end of the expansion joint to form a movable end 504, so that the connecting plate 502 and the expansion rubber strip 501 of the movable end 504 can slide left and right relative to the drainage channel to adapt to the expansion of the eaves plate groove caused by temperature difference.

[0059] Further, in a specific embodiment, please refer toFigure 1 and Figure 3 The transverse cantilever beam 201 adopts L100*8 galvanized angle steel, the U-shaped cantilever frame 202 adopts L100*12 galvanized angle steel, the transverse cantilever beam 201 and the U-shaped cantilever frame 202 are connected by 2# and 3# bolts, and the bolt type is M10*50mm; the transverse cantilever beam 201 is fixedly connected with the upper anchoring assembly 101 by 1# bolt (M16*50mm) and 14# bolt (M10*30mm).

[0060] Further, in a specific embodiment, please refer to Figure 1 and Figure 5 The drainage assembly 3 further comprises a lower outlet 302 arranged at the lower end of the drainage ditch 301, end head sealing plates 303 arranged at both ends of the drainage ditch, and cantilever connecting pieces 305 arranged on the outer wall of the drainage ditch; preferably, the lower outlet 302 is made of a 4mm-thick aluminum alloy plate into a cylindrical structure to connect a PVC sewer pipe with a diameter of 300mm; the cantilever connecting piece 305 is made of a 3mm-thick aluminum alloy plate, one end of the cantilever connecting piece 305 is welded on the outer wall of the drainage ditch by aluminum welding, and the other end is connected to the U-shaped cantilever frame 202 by 9#-13# bolts M10*30mm; five cantilever connecting pieces 305 are arranged at each cross section of the drainage ditch 304.

[0061] Further, in a preferred embodiment, please refer to Figure 1 and Figure 4 The upper anchoring assembly 101 comprises upper anchoring steel bars 1011, an upper anchoring steel plate 1012 and an upper anchoring channel steel 1013; the upper anchoring steel bars 1011 and the upper anchoring steel plate 1012 are embedded in the concrete on the top surface of the box girder flange plate 7, and the upper anchoring steel bars 1011 are welded below the upper anchoring steel plate 1012; one end of the upper anchoring channel steel 1013 is embedded in the concrete on the top surface of the box girder flange plate 7 and welded with the upper anchoring steel plate 1012, and the other end is exposed and protrudes from the box girder flange plate 7 and is connected with the transverse cantilever beam 201; preferably, the upper anchoring steel bars 1011 adopt HA10 threaded steel, and the part of the upper anchoring channel steel 1013 exposed and protruding from the box girder flange plate 7 is galvanized for corrosion prevention.

[0062] Further, in a preferred embodiment, please refer to Figure 1 and Figure 4The lower anchoring assembly 102 comprises a transverse positioning angle steel 1021, a lower anchoring steel plate 1022, and a lower anchoring expansion bolt 1023. One end of the transverse positioning angle steel 1021 is connected with the U-shaped overhanging framework 202, and the other end is connected with the lower anchoring steel plate 1022. One end of the lower anchoring expansion bolt 1023 is anchored in the concrete on the side of the box girder flange plate, and the other end is connected with the lower anchoring steel plate 1022. Preferably, the transverse positioning angle steel 1021 is an L60*8 angle steel, and the lower anchoring expansion bolt 1023 is an 8# expansion bolt with a model of M12*140mm.

[0063] Further, in a preferred embodiment, please refer to Figure 3 , Figures 9 to 11 , the joint seam control assembly 6 is arranged at the joint seam of the adjacent drainage groove 304. The joint seam control assembly 6 comprises a water stop rubber strip 601 and a joint plate 602 arranged outside the joint seam in sequence, and a silicone sealant strip 603 filled in the joint seam gap. The two ends of the water stop rubber strip 601 and the joint plate 602 are respectively fixedly overlapped with the drainage groove 304 at both ends of the joint seam. Preferably, the joint plate is made of an aluminum alloy plate with a thickness of 3mm and a width of 5cm. The thickness of the water stop rubber strip 601 is 6mm. The water stop rubber strip 601, the joint plate 602 and the drainage groove 304 are fixedly overlapped by using a hollow rivet. The hollow rivet is made of aluminum, with a strength grade of 06, a pipe diameter of 6.4mm, and a rivet pipe length of 18mm. When installing the joint seam control assembly 6, at the joint seam of the adjacent two eaves trough grooves, first install the water stop rubber strip 601 outside the eaves trough groove, then install the joint plate 602 outside the water stop rubber strip 601, and then anchor the drainage groove 304, the water stop rubber strip 601 and the joint plate 602 together by using the hollow rivet. Finally, seal the water stop by smearing silicone sealant in the joint seam gap. Before installation, the drainage groove end and the joint plate need to be punched.

[0064] Further, in a preferred embodiment, please refer to Figure 1 The cover plate 401 is made of an aluminum alloy plate with a thickness of 1.5mm. The cover plate 401 is fixed on the transverse overhanging beam 201 by a cover plate connector. The cover plate connector is made of a galvanized unequal angle steel L63*40*4. The long side of the cover plate connector is welded with the transverse overhanging beam 201, and the short side is connected with the cover plate 401 by self-tapping screws. Two cover plate connectors are arranged in the cross section of the cover plate 401 to better fix the cover plate.

[0065] Further, in a preferred embodiment, please refer to Figure 1The protection system 4 further comprises a partition plate 402 arranged between the eave plate 403 and the U-shaped cantilever frame 202; one end of the partition plate 402 is connected with the outside of the U-shaped cantilever frame 202, and the other end is connected with the inside of the eave plate 403; preferably, the partition plate 402 and the eave plate 403 are made of 3mm thick aluminum alloy plates; the partition plate 402 is connected with the U-shaped cantilever frame 202 through a first connecting piece 404, one end of the first connecting piece 404 is welded with the U-shaped cantilever frame 202, and the other end is connected with the partition plate 402 through 4# and 5# bolts M10*50mm; the eave plate 403 is fixed on the partition plate 402 through a second connecting piece 405, one end of the second connecting piece 405 is welded on the partition plate 402 through aluminum welding, and the other end is connected with the eave plate 403 through 6# and 7# bolts M6*30mm; the first connecting piece 404 and the second connecting piece 405 are both made of 10mm thick galvanized steel plates, and two first connecting pieces and two second connecting pieces are arranged in each cross section.

[0066] Further, in a preferred embodiment, referring to Figures 12 to 14 The movable end of the connecting plate 502 and the rubber strip 501 is provided with a sliding groove 505 and a sliding rod 506, the lower end of the sliding rod 506 is slidably connected with the sliding groove 505, and the upper end is fixedly connected with the movable end of the drainage groove 304, so that the movable end of the connecting plate 502 and the rubber strip 501 can slide left and right relative to the movable end of the drainage groove 304; preferably, the length of the sliding groove 505 is 2-2.2 times the width of the expansion joint; the sliding rod 506 is a core-pulling rivet, and the sliding rod 506 is arranged at the center position of the sliding groove 505, so as to ensure that the movable range of at least one side of the expansion joint is one time of the width of the expansion joint.

[0067] Further, in a preferred embodiment, referring to Figure 5 and Figure 14 Along the drainage direction of the drainage ditch 301, the movable end 504 and the fixed end 503 at the same expansion joint position are arranged at the upstream and the downstream respectively; since the sliding groove 505 and the sliding rod 506 are arranged at the movable end, and the connecting plate 502 and the rubber strip 501 at the movable end will slide left and right relative to the drainage groove 304 (along the drainage direction of the drainage ditch 301), the connection and sealing effect of the movable end may be affected by the continuous erosion of the water flow during a long time drainage; by arranging the movable end 504 and the fixed end 503 at the upstream and the downstream respectively, the joint end surface between the connecting plate 502, the rubber strip 501 and the drainage groove 304 at the movable end will face away from the water flow direction, so as to reduce the influence of the water flow erosion on the connection and sealing effect of the expansion joint.

[0068] Further, in a preferred embodiment, the width of the expansion joint is 3-5cm.

[0069] Further, in a preferred embodiment, the contact surface of the U-shaped cantilever frame 202 and the gutter 301 is coated with a mastic sealant to prevent galvanic corrosion between the aluminum alloy surface and the galvanized steel material.

[0070] Further, in a preferred embodiment, the rubber gasket is used to isolate the different metal components connected to each other in the present application, and the thickness of the rubber gasket is preferably 3 mm; in the present application, the metal material used for the bolts other than those used in the drainage assembly is different from the metal material of the connected components.

[0071] Further, in a preferred embodiment, the length of the drainage groove 304 is 2-3 m, and the transverse cantilever beam 201 and the U-shaped cantilever frame 202 are provided every 1-1.5 m on the drainage gutter 301.

[0072] The installation and construction method of the eaves trough structure for bridge deck drainage in the marine environment is as follows:

[0073] S1, foundation and embedded part construction. Install the upper anchoring steel bar and the upper anchoring steel plate in the box girder reserved slot, install the formwork, and pour the concrete.

[0074] S2, upper anchoring channel steel installation. Accurately loft on the upper anchoring steel plate, and weld the upper anchoring channel steel. The upper anchoring channel steel should be installed with a slope according to the design slope of the bridge.

[0075] S3, installation of transverse cantilever beam. Connect the transverse cantilever beam with the upper anchoring channel steel by bolts.

[0076] S4, installation of drainage assembly and U-shaped cantilever frame. Before installation, coat the contact surface of the drainage groove and the U-shaped cantilever frame with a mastic sealant for isolation. The drainage groove and the transverse cantilever beam are connected by bolts, and a 3mm rubber gasket is arranged between the contact surface of the angle steel and the drainage groove.

[0077] S5, installation of lower anchoring expansion bolt and transverse positioning angle steel. First, drill holes in the box girder flange plate with a power drill, and then install the lower anchoring expansion bolt. After the installation of the lower anchoring expansion bolt is completed, connect the transverse positioning angle steel welded on the U-shaped cantilever frame with a nut.

[0078] S6, installation of partition plate and eaves plate. Install the partition plate on the first connecting piece of the U-shaped cantilever frame by bolts, and then install the eaves plate on the partition plate through the second connecting piece by bolts. A 3mm rubber gasket is used to isolate the contact surface between the galvanized steel and the aluminum alloy at the bolt connection.

[0079] S7, installation of cover plate. Fix the cover plate on the transverse cantilever beam by self-tapping screws through the cover plate connecting piece.

[0080] S8, the installation of the drainage groove joint, that is, the joint seam control assembly. After the installation of the adjacent two sections of eave plate grooves, the joint plate and the water stop rubber strip are installed, a special tool is used to punch holes according to the interval of the blind rivets, after the punching is completed, the blind rivets are anchored, and silicone sealant is applied in the joint gap to form a silicone sealant strip.

[0081] S9, the installation of the expansion joint control assembly. The expansion rubber strip is installed outside the drainage groove joint, the connecting plate is installed outside the expansion rubber strip, and the fixed end and the movable end are anchored and fixed by the blind rivets. When the movable end is anchored, the rivet must be located in the center of the sliding groove.

[0082] S10, the installation of the drainage ditch end plate. The end plate is installed at the end of the drainage ditch and is anchored on the drainage groove by the blind rivets.

[0083] S11, the technical requirements for the installation of the eave plate groove: the structural size, the installation elevation, the longitudinal slope, the transverse slope and the alignment meet the design requirements, and the distance between the eave plate groove and the bridge edge line meets the design requirements.

Claims

1. A gutter structure for bridge deck drainage in marine environment, comprising an anchoring system (1), an overhanging system (2), characterized in that Also include: Drainage assembly (3), protection system (4), expansion joint control assembly (5); The anchoring system (1) includes an upper anchoring assembly (101) anchored in the top surface concrete of the box girder flange plate (7), and a lower anchoring assembly (102) anchored in the side surface concrete of the box girder flange plate (7) below the upper anchoring assembly (101); the upper anchoring assembly (101) includes upper anchoring steel bars (1011), upper anchoring steel plates (1012) and upper anchoring channel steels (1013); the upper anchoring steel bars (1011) and the upper anchoring steel plates (1012) are embedded in the top surface concrete of the box girder flange plate (7), and the upper anchoring steel bars (1011) are welded below the upper anchoring steel plates (1012); one end of the upper anchoring channel steel (1013) is embedded in the top surface concrete of the box girder flange plate (7) and welded with the upper anchoring steel plate (1012), and the other end is exposed and protrudes from the box girder flange plate (7) and connected with the transverse cantilever beam (201); The cantilever system (2) includes a transverse cantilever beam (201) fixedly connected with the upper anchoring assembly (101) at one end and extending to the top surface of the drainage ditch (301) and connected with the top end of the U-shaped cantilever frame (202) at the other end; the U-shaped cantilever frame (202) is connected with the lower anchoring assembly (102) at one side near the box girder flange plate (7) and is sleeved on the outer wall of the drainage ditch (301); The drainage assembly (3) includes a drainage ditch (301) with a U-shaped cross section; the drainage ditch (301) is formed by sequentially splicing a plurality of drainage channels (304), and an expansion joint (8) is arranged at every interval of 40-60 m on the drainage ditch (301); The protection system (4) includes a cover plate (401) arranged along the drainage direction of the drainage ditch (301), a eave plate (403), and a partition plate (402) arranged between the eave plate (403) and the U-shaped cantilever frame (202); the cover plate (401) is fixedly covered on the upper side of the connection between the transverse cantilever beam (201) and the upper anchoring assembly (101) through the transverse cantilever beam (201), and one side of the cover plate (401) is overlapped with the edge of the drainage ditch (301), and the other side is overlapped with the side surface of the box girder flange plate (7); the outer surface of the eave plate (403) is arc-shaped, and the eave plate (403) is arranged at the side of the drainage ditch (301) away from the box girder flange plate (7), and the top end of the eave plate (403) is bent towards the drainage ditch (301) and overlapped with the edge of the drainage ditch (301); one end of the partition plate (402) is connected with the outer side of the U-shaped cantilever frame (202), and the other end is connected with the inner side of the eave plate (403); The expansion joint control assembly (5) comprises expansion rubber strips (501) attached to the outside of the drainage groove and overlapping with the drainage groove at both ends of the expansion joint, and connecting plates (502) attached to the outside of the expansion rubber strips (501); one end of the connecting plate (502) and the expansion rubber strip (501) is fixedly connected with the drainage groove at one end of the expansion joint to form a fixed end (503), and the other end of the connecting plate (502) and the expansion rubber strip (501) is slidably connected with the drainage groove at the other end of the expansion joint to form a movable end (504); the movable end of the connecting plate (502) and the expansion rubber strip (501) is provided with a sliding groove (505) and a sliding rod (506), the lower end of the sliding rod (506) is slidably connected with the sliding groove (505), and the upper end of the sliding rod (506) is fixedly connected with the movable end of the drainage groove, so that the movable end of the connecting plate (502) and the expansion rubber strip (501) can slide left and right relative to the movable end of the drainage groove (304).

2. The gutter structure for bridge deck drainage in marine environment according to claim 1, characterized in that, The lower anchoring assembly (102) comprises a transverse positioning angle steel (1021), a lower anchoring steel plate (1022) and a lower anchoring expansion bolt (1023); one end of the transverse positioning angle steel (1021) is connected with the U-shaped cantilever framework (202), and the other end is connected with the lower anchoring steel plate (1022); one end of the lower anchoring expansion bolt (1023) is anchored in the concrete on the side of the box girder flange plate, and the other end is connected with the lower anchoring steel plate (1022).

3. The gutter structure for bridge deck drainage in marine environment according to claim 1, characterized in that, The drainage assembly (3) further comprises a lower outlet (302) arranged at the lower end of the drainage ditch (301), end sealing plates (303) arranged at both ends of the drainage ditch, and cantilever connecting pieces (305) arranged on the outer wall of the drainage groove; one end of the cantilever connecting piece (305) is connected with the outer wall of the drainage groove, and the other end is connected with the U-shaped cantilever framework (202).

4. The gutter structure for bridge deck drainage in marine environments according to claim 1, wherein, A splicing joint control assembly (6) is arranged at the splicing joint between adjacent drainage grooves (304); the splicing joint control assembly (6) comprises, in sequence, a waterstop rubber strip (601) and a joint plate (602) attached to the outside of the splicing joint, and a silicone sealant strip (603) filled in the gap of the splicing joint; the two ends of the waterstop rubber strip (601) and the joint plate (602) are fixedly overlapped with the drainage grooves (304) at both ends of the splicing joint.

5. The gutter structure for bridge deck drainage in marine environments according to claim 1, wherein, The movable end (504) and the fixed end (503) are arranged at the upstream and downstream respectively at the same expansion joint position along the drainage direction of the drainage ditch (301).

6. The gutter structure for bridge deck drainage in marine environments according to claim 1, wherein, The contact surface between the U-shaped cantilever framework (202) and the drainage ditch (301) is coated with a mastic sealant for isolation.

7. The gutter structure for bridge deck drainage in marine environments according to claim 1, wherein, The width of the expansion joint is 3-5 cm; the length of the drainage groove (304) is 2-3 m, and the transverse cantilever beam (201) and the U-shaped cantilever framework (202) are arranged every 1-1.5 m on the drainage ditch (301).

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