Construction Method of Underwater Support System in Navigable Waters

Abstract

The present application relates to a method for constructing an underwater support system in navigable waters, which includes setting a support bag and a reinforcing support body at the junction of the first support column and the foundation soil, and applying downward pressure to the limit wedge by means of a tightening screw; sleeve a support column sleeve on the outside of the first support column, and sequentially set elastic connecting bars, elastic anti-collision piers and anti-collision angle bars on the side of the first support column away from the active box beam; a first airbag is attached to the lower surface of the anti-collision angle bar, and a warning light is set on the outer wall; a supporting floating plate and a water surface floating support plate are passed between the first and second trough beams that are mirror-imaged, and a second airbag is set on the lower surface of the water surface floating support plate; a closed connector is used to fill the gap between the active box beam and the connecting trough plate; the platform support beam can be pre-stressed by means of a winding and pulling machine, a counterweight sling and a counterweight trough; and the protective support column is rotated around the rotating ball joint under the action of the angle adjustment bolt. The present application improves the bearing capacity of the underwater support and improves the safety of the underwater support.

Description

Technical Field

[0001] The present application relates to the technical field of construction engineering, and is applicable to underwater support deployment projects in navigable waters, and specifically to a construction method for an underwater support system in navigable waters. Background Art

[0002] When constructing underwater bridge projects, it is usually necessary to set up supports in the water. When constructing underwater supports, it usually includes vertical support column layout, anti-collision system construction, work platform installation and other construction links. During on-site construction, how to improve the stability of the support structure, improve the support bearing performance, and enhance the safety of the protective structure has always been the focus and difficulty of on-site engineering control.

[0003] In the existing construction technology, there is a construction method for the underwater support hoisting system of a steel tube concrete arch bridge, which includes the following steps: platform steel tube pile layout, first tie beam and diagonal support pile setting, second tie beam setting, third tie beam and platform plate layout, column layout, cross-connection setting, arch rib hoisting and stress and strain observation, concrete pouring, and hoisting system removal. In this technology, the connections of the platform components are not welded, which reduces the difficulty of on-site hoisting construction. Although this structure can meet the problem of underwater support connection, there is still room for further improvement in reducing the number of support columns, improving the stability of the support structure, and improving the safety of the support.

[0004] In view of this, in order to improve the bearing performance and safety of the support structure, there is an urgent need for a construction method of an underwater support system in navigable waters that can improve the stability of the support, reduce the difficulty of arranging the support columns, and improve the safety of the support system.

[0005] Application Contents

[0006] The purpose of this application is to provide a method for constructing an underwater support system in navigable waters in order to solve the above-mentioned problems existing in the prior art.

[0007] In order to achieve the above application purpose, this application adopts the following technical solutions: The construction method of the underwater support system in navigable waters includes:

[0008] S00, Construction preparation: Test and determine the river water level, and calculate the bearing capacity of the first support column, the second support column and the third support column;

[0009] S10, first support column layout: digging a layout channel for support bags and position control guide grooves in the foundation soil, and setting guide groove connecting ribs between adjacent position control guide grooves;

[0010] The reinforcing support body is injected into the support bag by pressure through the bag filling tube;

[0011] Hoist the first support column above the control guide groove, first press the first support column into the foundation soil, then apply a downward pressure to the support bladder using support bolts and a support base plate, and then apply a downward pressure to the limit wedge through a compression screw to firmly connect the first support column to the control guide groove;

[0012] S20. Lightweight anti-collision pier layout: Set a support column sleeve outside the first support column according to the river water level, and weld a support column side plate to the first support column above and below the support column sleeve respectively;

[0013] Sequentially arrange elastic connecting bars, lightweight anti-collision piers, and anti-collision angle bars on the side of the first support column facing away from the existing box girder, and connect the anti-collision angle bars to the angle bar chute on the side wall of the lightweight anti-collision pier through angle bar connecting plates;

[0014] Paste the first airbag on the lower surface of the anti-collision angle bar, and set warning lights on the side facing away from the lightweight anti-collision pier;

[0015] Control the elevation of the support column sleeve through sleeve positioning bolts, and make the bottom surface of the anti-collision angle bar flush with the river water level;

[0016] S30. Second support column layout: Stack sandbags or precast concrete blocks on the foundation soil to form a support column support body;

[0017] Sequentially arrange a column bottom support plate, a second support column, and a column top connecting plate on the support column support body, and vertically weld and connect the top and bottom ends of the second support column to the column bottom support plate and the column top connecting plate respectively;

[0018] Adjust the elevation of the first support plate through the support plate connecting bolts on the column top connecting plate;

[0019] S40. Support floating plate construction: Set a first trough beam on the side of the longitudinally adjacent first support column facing the existing box girder;

[0020] Set a second trough beam on the upper surface of the longitudinally adjacent first support plate, and thread a support floating plate and a water surface floating support plate between the mirror-image first trough beam and the second trough beam;

[0021] Set a second airbag on the lower surface of the water surface floating support plate;

[0022] Set a connecting trough plate on the side of the existing box girder facing the second support column, and inject a sealed connecting body into the gap between the connecting trough plate and the existing box girder through a compaction grouting pipe;

[0023] Set beam side connecting bolts between the connecting trough plate and the second trough beam;

[0024] S50. Platform support beam layout: Layout a third support column on the upper surface of the support floating plate, and set a second support plate at the top of the third support column;

[0025] Use an external hoisting device to hoist the platform support beam above the first support column and the third support column, and adjust the elevation of the platform support beam through the height-adjusting bolts;

[0026] Set up a winding machine on the lower surface of the platform support beam, connect one end of the counterweight sling to the winding machine, and the other end to the counterweight sling groove;

[0027] Sink the counterweight sling groove into the river water body, and lift the counterweight sling groove through the winding machine and the counterweight sling to preload the platform support beam;

[0028] S60. Layout of angle-adjustable protective side plates: Weld limit side plates on the upper surface of the platform support beam, and lay support roof plates on longitudinally adjacent platform support beams;

[0029] Connect the bottom end of the protective support column to the platform support beam through a rotating ball hinge, and set angle-adjusting bolts between the protective support column and the platform support beam, and make both ends of the angle-adjusting bolts connected to the platform support beam and the protective support column through bolt ball hinges respectively;

[0030] Set protective side plates between longitudinally adjacent protective support columns;

[0031] Change the length of the angle-adjusting bolts to adjust the inclination angles of the protective support columns and the protective side plates until the construction is completed.

[0032] Furthermore, in step S10, the support bladder is adhesively connected to the outer side wall of the position control guide groove. The cross-section of the position control guide groove is an isosceles trapezoid, and guide groove connecting ribs are provided between longitudinally adjacent position control guide grooves.

[0033] Furthermore, in step S10, column side support plates are welded at equal intervals along the circumferential direction at the bottom end of the first support column, grooved holes connected to the pressing screw are provided on the column side support plates, screw holes connected to the support bolts are provided on the column side support plates, and nuts connected to the pressing screw are welded on the upper surface of the limit wedge tenon.

[0034] Furthermore, in step S20, sleeve connecting plates are welded at the top and bottom ends of the support column sleeve respectively. One end of the elastic connecting rib is welded to the support column sleeve, and the other end is adhesively connected to the lightweight anti-collision pier. Slide channels connected to the angle rib connecting plate are provided on the angle rib chute.

[0035] Furthermore, in step S40, the cross-sections of the first trough beam and the second trough beam are "U" shaped.

[0036] Furthermore, in step S40, the lower surface of the support floating plate is adhesively connected to the water surface floating plate, and the second airbag is in a cylindrical or prismatic shape.

[0037] Furthermore, in step S40, the beam side connecting bolt includes a screw rod and a nut, and the tightening directions of the screw rods on both sides of the nut are opposite, and both ends of the beam side connecting bolt are connected to the connecting groove plate and the second trough beam through connecting ball hinges respectively.

[0038] Further, in step S50, the counterweight hanging groove is cylindrical, and hanging groove reinforcing ribs are arranged at the connection with the counterweight sling.

[0039] Further, in step S60, the angle adjusting bolt includes a screw rod and a nut, and the tightening directions of the screw rods on both sides of the nut are opposite.

[0040] Further, in step S60, the cross-section of the protective support column is in the shape of "I", and the protective side plate is inserted along a preset groove on the protective support column.

[0041] Compared with the prior art, the present application has the following beneficial effects:

[0042] 1) A support airbag and a reinforcing support body are arranged at the connection between the first support column and the foundation soil mass, which can effectively improve the bearing capacity of the foundation soil mass; at the same time, a downward pressure can be applied to the limit wedge through the tightening screw rod, so that the connection between the first support column and the position control guide groove is firm, and the stability of the first support column is improved.

[0043] 2) A support column sleeve is sleeved outside the first support column, and an elastic connecting rib, an elastic anti-collision pier and an anti-collision angle rib are sequentially arranged on the side of the first support column away from the existing box girder, improving the anti-collision performance of the elastic anti-collision pier; at the same time, a first airbag is pasted on the lower surface of the anti-collision angle rib, and a warning light is arranged on the side away from the elastic anti-collision pier, which can effectively improve the layout efficiency of the anti-collision angle rib.

[0044] 3) A support floating plate and a water surface floating support plate are penetrated between the mirror-image opposite first trough beam and the second trough beam, and a second airbag is arranged on the lower surface of the water surface floating support plate, which can utilize the water buoyancy to improve the bearing capacity of the water surface floating support plate; at the same time, a sealed connecting body is used to fill the gap between the existing box girder and the connecting trough plate, realizing the rapid layout of the connecting trough plate.

[0045] 4) A third support column and a second support plate are arranged on the upper surface of the support floating plate, and the elevation of the platform support beam can be adjusted by a heightening bolt, improving the layout efficiency of the platform support beam; at the same time, the platform support beam can be pre-pressed by a winding machine, a counterweight sling and a counterweight hanging groove, realizing the rapid pre-pressing of the platform support beam.

[0046] 5) A limit side plate is welded on the upper surface of the platform support beam, and the protective support column can be rotated around the rotating ball hinge under the action of the angle adjusting bolt, realizing the rapid adjustment of the inclination angle of the protective support column and the protective side plate. Description of the Drawings

[0047] Figure 1 is the construction flow chart of the waterborne support system in the navigable water area of the present application;

[0048] Figure 2 is Figure 1 the schematic diagram of the waterborne support system in the navigable water area in

[0049] Figure 3 is Figure 2 Schematic diagram of the connection structure between the first support column and the position control guide groove in

[0050] Figure 4 is Figure 2 Schematic diagram of the connection structure between the first support column and the side support plate of the column in

[0051] Figure 5 is Figure 2 Schematic diagram of the connection structure between the protective support column and the protective side plate in

[0052] In the figure, 1. First support column; 2. Second support column; 3. Third support column; 4. Foundation soil mass; 5. Support bladder; 6. Reinforcing support body; 7. Position control guide groove; 8. Support bolt; 9. Support bottom plate; 10. Tightening screw; 11. Limit wedge tenon; 12. Side support plate of the column; 13. Support column sleeve; 14. Side plate of the support column; 15. Existing box girder; 16. Elastic connecting bar; 17. Lightweight anti-collision pier; 18. Anti-collision angle bar; 19. Angle bar chute; 20. First airbag; 21. Warning light; 22. Sleeve positioning bolt; 23. Sleeve connecting plate; 24. Angle bar connecting plate; 25. Support column support body; 26. Bottom plate of the column; 27. Top connecting plate of the column; 28. Connecting bolt of the support plate; 29. First support plate; 30. First trough beam; 31. Second trough beam; 32. Support floating plate; 33. Water surface floating plate; 34. Second airbag; 35. Connecting trough plate; 36. Compaction grouting pipe; 37. Hermetic connecting body; 38. Beam side connecting bolt; 39. Connecting spherical hinge; 40. Second support plate; 41. Platform support beam; 42. Heightening bolt; 43. Winding machinery; 44. Counterweight sling; 45. Counterweight hanging groove; 46. Reinforcing bar of the hanging groove; 47. Limit side plate; 48. Support top plate; 49. Protective support column; 50. Rotating spherical hinge; 51. Angle adjusting bolt; 52. Bolt spherical hinge; 53. Protective side plate; 54. Guide groove connecting bar; 55. Bladder filling pipe. Detailed implementation manners

[0053] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a 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 of ordinary skill in the art belong to the scope of protection of the present application.

[0054] Those skilled in the art should understand that, in the disclosure of the present application, the orientation or positional relationship indicated by terms such as "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside" are based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present application.

[0055] Figure 1 This is the construction flow chart of the underwater support system in the navigable waters of the present invention, refer to Figure 1 As shown, the construction method of the underwater support system in the navigable waters includes the following construction steps:

[0056] S00, construction preparation: test and determine the river water level, and calculate the bearing capacity of the first support column 1, the second support column 2 and the third support column 3;

[0057] S10, first support column 1 layout:

[0058] A groove for supporting the bag 5 and the position-controlling guide groove 7 is dug in the foundation soil 4, and guide groove connecting ribs 54 are arranged between adjacent position-controlling guide grooves 7;

[0059] The reinforcing support body 6 is pressure-filled into the support bag 5 through the bag filling tube 55;

[0060] Use external lifting equipment to hang the first support column 1 above the position control guide groove 7, first press the first support column 1 into the foundation soil 4, then use the support bolts 8 and the support bottom plate 9 to apply downward pressure to the support bag 5, and then use the compression screw 10 to apply downward pressure to the limit wedge 11, so that the first support column 1 is firmly connected to the position control guide groove 7;

[0061] S20, Lightweight Crash Cushion 17 Layout:

[0062] A support column sleeve 13 is sleeved on the outside of the first support column 1 according to the water level of the river channel, and a support column side plate 14 is welded on the first support column 1 above and below the support column sleeve 13 respectively;

[0063] On the side of the first support column 1 away from the existing box beam 15, an elastic connecting bar 16, a lightweight anti-collision pier 17 and an anti-collision angle bar 18 are sequentially arranged, and the anti-collision angle bar 18 is connected to the angle bar slide groove 19 of the side wall of the lightweight anti-collision pier 17 through an angle bar connecting plate 24;

[0064] A first airbag 20 is attached to the lower surface of the anti-collision corner rib 18, and a warning light 21 is provided on the side away from the lightweight anti-collision pier 17;

[0065] First, control the elevation of the strut sleeve 13 through the sleeve positioning bolt 22, and make the bottom surface of the anti-collision angle bar 18 flush with the river water level;

[0066] S30, Layout of the second strut 2:

[0067] Stack sandbags or precast concrete blocks on the foundation soil 4 to form a strut support 25;

[0068] Sequentially set a column bottom support plate 26, a second strut 2, and a column top connecting plate 27 on the strut support 25, and vertically weld and connect the top and bottom ends of the second strut 2 to the column bottom support plate 26 and the column top connecting plate 27 respectively;

[0069] Adjust the elevation of the first support plate 29 through the support plate connecting bolt 28 on the column top connecting plate 27;

[0070] S40, Construction of the support floating plate 32:

[0071] Set a first trough beam 30 on the side of the first strut 1 adjacent to the existing box girder 15 longitudinally;

[0072] Set a second trough beam 31 on the upper surface of the first support plate 29 adjacent longitudinally, and pass a support floating plate 32 and a water surface floating support plate 33 between the mirror-image first trough beam 30 and the second trough beam 31;

[0073] Set a second airbag 34 on the lower surface of the water surface floating support plate 33;

[0074] Set a connecting trough plate 35 with a "U" - shaped cross - section on the side of the existing box girder 15 facing the second strut 2, and inject a sealing connection body 37 into the gap between the connecting trough plate 35 and the existing box girder 15 through a compaction grouting pipe 36;

[0075] Set a beam - side connecting bolt 38 between the connecting trough plate 35 and the second trough beam 31;

[0076] S50, Layout of the platform support beam 41: Layout a third strut 3 on the upper surface of the support floating plate 32, and set a second support plate 40 at the top of the third strut 3;

[0077] Use an external hoisting device to hoist the platform support beam 41 above the first strut 1 and the third strut 3, and adjust the elevation of the platform support beam 41 through the height - adjusting bolt 42;

[0078] Set a winding machine 43 on the lower surface of the platform support beam 41, and connect one end of the counterweight lifting cable 44 to the winding machine 43 and the other end to the counterweight lifting groove 45;

[0079] Sink the counterweight lifting groove 45 into the river water body, and lift the counterweight lifting groove 45 through the winding machine 43 and the counterweight lifting cable 44 to pre - press the platform support beam 41;

[0080] S60. Deployment of the Angle-adjustable Protective Side Plate 53:

[0081] Weld the limiting side plate 47 on the upper surface of the platform support beam 41, and lay the support top plate 48 on the longitudinally adjacent platform support beams 41;

[0082] Connect the bottom end of the protective support column 49 to the platform support beam 41 through a rotating ball hinge 50, and set an angle-adjusting bolt 51 between the protective support column 49 and the platform support beam 41, and connect the two ends of the angle-adjusting bolt 51 to the platform support beam 41 and the protective support column 49 respectively through bolt ball hinges 52;

[0083] Set the protective side plate 53 between the longitudinally adjacent protective support columns 49;

[0084] Change the length of the angle-adjusting bolt 51 to adjust the inclination angle of the protective support column 49 and the protective side plate 53.

[0085] In this embodiment, refer to Figures 2 to 5 As shown, set the support airbag 5 and the reinforcement support 6 at the joint of the first support column 1 and the foundation soil mass 4, and the downward pressure can be applied to the limiting wedge 11 through the pressing screw 10;

[0086] Sheath the support column sleeve 13 outside the first support column 1, and successively set the elastic connecting bars 16, the lightweight anti-collision pier 17 and the anti-collision angle bars 18 on the side of the first support column 1 away from the existing box girder 15;

[0087] Paste the first airbag 20 on the lower surface of the anti-collision angle bar 18, and set warning lights 21 on the outer side wall;

[0088] Thread the support floating plate 32 and the water surface floating plate 33 between the mirror-image opposite first trough beam 30 and second trough beam 31, and set the second airbag 34 on the lower surface of the water surface floating plate 33;

[0089] Use the airtight connector 37 to fill the gap between the existing box girder 15 and the connecting trough plate 35;

[0090] The platform support beam 41 can be preloaded through the winding machine 43, the counterweight sling 44 and the counterweight hanging groove 45;

[0091] Under the action of the angle-adjusting bolt 51, the protective support column 49 rotates around the rotating ball hinge 50.

[0092] Preferably, for better understanding, the following explanations are given for the above professional terms:

[0093] The first support column 1, the second support column 2 and the third support column 3 are all made of rolled steel pipes with diameters of 300 mm, 200 mm and 150 mm respectively.

[0094] The foundation soil mass 4 is cohesive soil in a hard plastic state.

[0095] A groove for supporting the bag 5 and the position-controlling guide groove 7 is dug in the foundation soil 4, and a guide groove connecting rib 54 is arranged between adjacent position-controlling guide grooves 7; the supporting bag 5 is made of a dense mesh and tied together; the position-controlling guide groove 7 is made of a truncated cone-shaped steel plate with a thickness of 2 mm and rolled; the guide groove connecting rib 54 is made of a 2 mm thick steel plate and rolled with a width of 20 cm.

[0096] The reinforcing support body 6 is pressure-filled into the supporting bladder 5 through the bladder filling tube 55 , and the bladder filling tube 55 is made of a steel pipe with a diameter of 90 mm.

[0097] The support bladder 5 is subjected to downward pressure by using support bolts 8 and a support bottom plate 9. The support bolts 8 are formed by rolling a screw rod with a diameter of 60 mm; the support bottom plate 9 is formed by rolling a steel plate with a thickness of 10 mm.

[0098] A downward pressure is applied to the limit wedge 11 by means of a pressing screw 10 , wherein the pressing screw 10 is formed by rolling a screw having a diameter of 30 mm.

[0099] A column side support plate 12 is welded at an evenly spaced interval along the circumferential direction at the bottom end of the first support column 1, and a slotted hole connected to the clamping screw 10 is provided on the column side support plate 12, and a screw hole connected to the support bolt 8 is provided on the column side support plate 12; the column side support plate 12 is made of rolled steel plate with a thickness of 10 mm.

[0100] A support column sleeve 13 is sleeved on the outside of the first support column 1 according to the water level of the river channel, and a support column side plate 14 is welded on the first support column 1 above and below the support column sleeve 13 respectively; the support column sleeve 13 is rolled from a steel plate with a thickness of 3 mm, and has a circular cross-section and a diameter of 400 mm; the sleeve connecting plate 23 is rolled from a steel plate with a thickness of 10 mm.

[0101] The current box girder 15 is made of reinforced concrete material with strength grade C50.

[0102] On the side of the first support column 1 away from the active box girder 15, an elastic connecting bar 16, a lightweight anti-collision pier 17 and an anti-collision corner bar 18 are arranged in sequence. The elastic connecting bar 16 is made of a spring with a diameter of 20 mm; the lightweight anti-collision pier 17 is made of a plastic tube with a diameter of 300 mm; the cross section of the anti-collision corner bar 18 is "L"-shaped and is made of rolled aluminum alloy.

[0103] The anti-collision angle rib 18 is connected to the angle rib chute 19 of the side wall of the lightweight anti-collision pier 17 through an angle rib connecting plate 24;

[0104] The angle rib chute 19 is made of an alloy plate with a thickness of 2 mm, and a sliding channel with a cross section of "T" is set in the angle rib chute 19;

[0105] The corner bar connecting plate 24 is made of rolled aluminum alloy with a thickness of 2 mm and is welded to the anti-collision corner bar 18.

[0106] The first airbag 20 is pasted on the lower surface of the anti-collision corner bar 18. The first airbag 20 is sewn from a rubber sheet with a thickness of 1 mm into a sealed cavity. A warning light 21 is arranged on the side of the anti-collision corner bar 18 away from the lightweight anti-collision pier 17. The warning light 21 uses a yellow flashing light.

[0107] The sleeve positioning bolt 22 is made of a rolled screw with a diameter of 10 mm. The elevation of the support column sleeve 13 is controlled by the sleeve positioning bolt 22, and the bottom surface of the anti-collision corner bar 18 is flush with the river water level.

[0108] Sandbags with a stacking height of 50 cm are piled up on the foundation soil 4 to form a support column support body 25. A column bottom support plate 26, a second support column 2 and a column top connecting plate 27 are sequentially arranged on the support column support body 25. The column bottom support plate 26, the column top connecting plate 27 and the first support plate 29 are all made of rolled steel plates with a thickness of 10 mm.

[0109] The elevation of the first support plate 29 is adjusted by the support plate connecting bolt 28 on the column top connecting plate 27. The support plate connecting bolt 28 is made of a rolled screw with a diameter of 30 mm.

[0110] A first channel beam 30 is arranged on the side of the longitudinally adjacent first support column 1 facing the existing box girder 15, and a second channel beam 31 is arranged on the upper surface of the longitudinally adjacent first support plate 29. The first channel beam 30 and the second channel beam 31 are both made of rolled steel plates with a thickness of 10 mm, and the cross section is "U" shaped.

[0111] A support floating plate 32 and a water surface floating support plate 33 are arranged between the mirror-image relative first channel beam 30 and second channel beam 31. The support floating plate 32 is made of a rolled steel plate with a thickness of 3 mm. The water surface floating support plate 33 uses a foam board with a thickness of 5 cm.

[0112] A second airbag 34 is arranged on the lower surface of the water surface floating support plate 33. The second airbag 34 is sewn from a rubber sheet with a thickness of 2 mm.

[0113] A connecting channel plate 35 with a "U" shaped cross section is arranged on the side of the existing box girder 15 facing the second support column 2. The connecting channel plate 35 is made of a rolled steel plate with a thickness of 10 mm and a width of 50 cm.

[0114] A sealed connecting body 37 is injected into the gap between the connecting channel plate 35 and the existing box girder 15 through a compaction grouting pipe 36. The compaction grouting pipe 36 uses a steel pipe with a diameter of 60 mm.

[0115] The sealed connecting body 37 uses AB glue.

[0116] A beam side connection bolt 38 is provided between the connecting groove plate 35 and the second groove beam 31. The beam side connection bolt 38 includes a screw rod with a diameter of 30 mm and nuts, and the tightening directions of the screw rods on both sides of the nuts are opposite. The connecting ball hinge 39 uses a ball hinge with a diameter of 30 mm.

[0117] A second support plate 40 is provided at the top end of the third support column 3. The second support plate 40 is rolled from a steel plate with a thickness of 10 mm.

[0118] The platform support beam 41 is rolled from an H-shaped steel with a specification of 300×300×10×15.

[0119] An external hoisting device is used to hoist the platform support beam 41 above the first support column 1 and the third support column 3, and the elevation of the platform support beam 41 is adjusted by a height adjustment bolt 42; the height adjustment bolt 42 is rolled from a screw rod with a diameter of 30 mm.

[0120] A winding machine 43 is provided on the lower surface of the platform support beam 41. The winding machine 43 uses a wire rope winch.

[0121] The counterweight sling 44 uses a wire rope with a diameter of 30 mm. One end is connected to the winding machine 43, and the other end is connected to the counterweight hanging groove 45;

[0122] The counterweight hanging groove 45 is rolled from a steel plate with a thickness of 1 mm, is cylindrical in shape, and has a volume of 3 m 3 , and a hanging groove reinforcing rib 46 is provided at the connection with the counterweight sling 44. The hanging groove reinforcing rib 46 is rolled from a steel plate with a thickness of 10 mm.

[0123] A limiting side plate 47 is welded on the upper surface of the platform support beam 41. The limiting side plate 47 is rolled from a steel plate with a thickness of 2 mm, with a width of 10 cm and a length of 20 cm.

[0124] A support top plate 48 is laid on the longitudinally adjacent platform support beams 41. The support top plate 48 is rolled from a steel plate with a thickness of 2 mm.

[0125] The protective support column 49 is rolled from a steel plate with a thickness of 2 mm; the bottom end of the protective support column 49 is connected to the platform support beam 41 through a rotating ball hinge 50. The rotating ball hinge 50 is rolled from a ball hinge with a diameter of 30 mm.

[0126] An angle adjustment bolt 51 is provided between the protective support column 49 and the platform support beam 41. The angle adjustment bolt 51 includes a screw rod with a diameter of 20 mm and nuts, and the tightening directions of the screw rods on both sides of the nuts are opposite.

[0127] Both ends of the angle adjustment bolt 51 are respectively connected to the platform support beam 41 and the protective support column 49 through bolt ball hinges 52;

[0128] The bolt ball hinge 52 uses a ball hinge with a diameter of 20 mm. A protective side plate 53 is provided between the longitudinally adjacent protective support columns 49, and the protective side plate 53 is rolled from a steel plate with a thickness of 1 mm.

[0129] The parts not described in detail in this application are prior art, so they are not described in detail in this application.

[0130] It can be understood that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "a" cannot be understood as a limitation on the number.

[0131] Although many technical terms are used in this document, the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the essence of this application; interpreting them as any additional limitation is contrary to the spirit of this application.

[0132] This application is not limited to the above best implementation mode. Anyone can obtain other various forms of products under the inspiration of this application. However, no matter what changes are made in its shape or structure, as long as it has the same or similar technical solutions as this application, they all fall within the protection scope of this application.

Claims

1. Construction method of underwater support system in navigable waters, It is characterized in that include: S00, construction preparation: testing to determine the water level of the river, and calculating the bearing capacity of the first support column (1), the second support column (2) and the third support column (3); S10, first support column (1) layout: digging a layout channel for the support bag (5) and the position control guide groove (7) in the foundation soil (4), and arranging guide groove connecting ribs between adjacent position control guide grooves (7); The reinforcing support body (6) is pressure-filled into the support bag (5) through the bag filling tube (55); The first support column (1) is suspended above the position control guide groove (7), and the first support column (1) is first pressed into the foundation soil (4), and then a downward pressure is applied to the support bag (5) by using a support bolt (8) and a support bottom plate (9), and then a downward pressure is applied to the limit wedge (11) by using a tightening screw (10), so that the first support column (1) and the position control guide groove (7) are firmly connected; S20, arranging the lightweight anti-collision pier (17): according to the water level of the river channel, a support column sleeve (13) is sleeved on the outer side of the first support column (1), and a support column side plate (14) is respectively welded on the first support column (1) above and below the support column sleeve (13); An elastic connecting bar (16), a lightweight anti-collision pier (17) and an anti-collision angle bar (18) are sequentially arranged on the side of the first support column (1) away from the existing box beam (15), and the anti-collision angle bar (18) is connected to the angle bar sliding groove (19) of the side wall of the lightweight anti-collision pier (17) through an angle bar connecting plate (24); A first air bag (20) is attached to the lower surface of the anti-collision angle rib (18), and a warning light (21) is provided on the side away from the lightweight anti-collision pier (17); The elevation of the support column sleeve (13) is controlled by the sleeve positioning bolt (22), and the bottom surface of the anti-collision angle rib (18) is flush with the water level of the river channel; S30, laying out the second support column (2): stacking sand bags or prefabricated concrete blocks on the foundation soil (4) to form a support column support body (25); A column bottom support plate (26), a second column (2) and a column top connecting plate (27) are sequentially arranged on the column support body (25), and the top and bottom ends of the second column (2) are respectively vertically welded to the column bottom support plate (26) and the column top connecting plate (27); The elevation of the first support plate (29) is adjusted by means of the support plate connecting bolt (28) on the column top connecting plate (27); S40, construction of the supporting floating plate (32): a first channel beam (30) is arranged on the side of the first longitudinally adjacent supporting column (1) facing the active box beam (15); A second channel beam (31) is arranged on the upper surface of the first support plate (29) adjacent to each other in the longitudinal direction, and a supporting floating plate (32) and a water surface floating support plate (33) are arranged between the first channel beam (30) and the second channel beam (31) which are mirror-image-opposite to each other; A second air bag (34) is arranged on the lower surface of the water surface floating support plate (33); A connecting groove plate (35) is arranged on the side of the existing box girder (15) facing the second support column (2), and a closed connecting body (37) is injected into the gap between the connecting groove plate (35) and the existing box girder (15) through a compacting grouting pipe (36); A beam side connecting bolt (38) is arranged between the connecting groove plate (35) and the second groove beam (31); S50. Layout of platform supporting beam (41): The third support column (3) is arranged on the upper surface of the support floating plate (32), and the second support plate (40) is set at the top of the third support column (3). Use an external hoisting device to hoist the platform supporting beam (41) above the first support column (1) and the third support column (3), and adjust the elevation of the platform supporting beam (41) through the height-adjusting bolt (42). A winding machine (43) is set on the lower surface of the platform supporting beam (41), and one end of the counterweight sling (44) is connected to the winding machine (43), and the other end is connected to the counterweight hanging groove (45). Sink the counterweight hanging groove (45) into the river water body, and lift the counterweight hanging groove (45) through the winding machine (43) and the counterweight sling (44) to preload the platform supporting beam (41). S60. Layout of the angle-adjustable protective side plate (53): The limiting side plate (47) is welded on the upper surface of the platform supporting beam (41), and the support top plate (48) is laid on the longitudinally adjacent platform supporting beams (41). The bottom end of the protective support column (49) is connected to the platform supporting beam (41) through a rotating ball hinge (50), and an angle-adjusting bolt (51) is set between the protective support column (49) and the platform supporting beam (41), and both ends of the angle-adjusting bolt (51) are respectively connected to the platform supporting beam (41) and the protective support column (49) through bolt ball hinges (52). A protective side plate (53) is set between the longitudinally adjacent protective support columns (49). Change the length of the angle-adjusting bolt (51) to adjust the inclination angle of the protective support column (49) and the protective side plate (53) until the construction is completed.

2. The construction method of the navigation water area underwater support system according to claim 1, characterized in that, In step S10, the support bladder (5) is adhesively connected to the outer side wall of the position control guide groove (7), the cross section of the position control guide groove (7) is an isosceles trapezoid, and a guide groove connecting rib (54) is set between the longitudinally adjacent position control guide grooves (7).

3. The construction method of the navigation water area underwater support system according to claim 1, characterized in that, In step S10, the bottom end of the first support column (1) is welded with column side support plates (12) at equal intervals in the circumferential direction, a grooved hole connected to the pressing screw (10) is set on the column side support plates (12), a screw hole connected to the support bolt (8) is set on the column side support plates (12), and a nut connected to the pressing screw (10) is welded on the upper surface of the limiting wedge tenon (11).

4. The construction method of the navigation water area underwater support system according to claim 1, characterized in that, In step S20, the top end and the bottom end of the support column sleeve (13) are respectively welded with sleeve connecting plates (23), one end of the elastic connecting rib (16) is welded and connected to the support column sleeve (13), the other end is adhesively connected to the lightweight anti-collision pier (17), and a sliding channel connected to the angle rib connecting plate (24) is set on the angle rib chute (19).

5. The construction method of the navigation water area underwater support system according to claim 1, characterized in that, In step S40, the cross sections of the first trough beam (30) and the second trough beam (31) are "U" shaped.

6. The construction method of the waterborne support system in navigable waters according to claim 1, characterized in that, in step S40, the lower surface of the support floating plate (32) is adhesively connected to the water surface floating plate (33), and the second airbag (34) is in a cylindrical or prismatic shape.

7. The construction method of the waterborne support system in navigable waters according to claim 1, characterized in that, in step S40, the beam side connecting bolt (38) includes a screw rod and a nut, and the tightening directions of the screw rods on both sides of the nut are opposite, so that both ends of the beam side connecting bolt (38) are connected to the connecting groove plate (35) and the second groove beam (31) through connecting ball hinges (39) respectively.

8. The construction method of the waterborne support system in navigable waters according to any one of claims 1-7, characterized in that, in step S50, the counterweight hanging groove (45) is in a cylindrical shape, and a hanging groove reinforcing rib (46) is arranged at the connection with the counterweight hanging cable (44).

9. The construction method of the waterborne support system in navigable waters according to any one of claims 1-7, characterized in that, in step S60, the angle adjusting bolt (51) includes a screw rod and a nut, and the tightening directions of the screw rods on both sides of the nut are opposite.

10. The construction method of the waterborne support system in navigable waters according to any one of claims 1-7, characterized in that, in step S60, the cross section of the protective support column (49) is in an "I" shape, and the protective side plate (53) is inserted along a groove preset on the protective support column (49).

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