Construction method of construction safety protection system for continuous thrustless arch bridge

Abstract

The present application relates to a construction method of a construction safety protection system for a continuous thrustless arch bridge. The scheme includes sequentially arranging a column top support plate, a first support plate and a second support plate at the top end of a support column, and arranging a connecting guide wheel between the second support plate and the arch bottom box girder; controlling the position of the arch rib at the beam top through a transverse positioning body, a second suspension cable and a protective sleeve; adjusting the height of a third bottom plate and a connecting support column through a bottom plate adjusting bolt, and arranging a column top spherical hinge at the top end of the connecting support column; arranging a pocket limiting ring, a support pocket and a pocket support body on a column top plate; arranging an arched support beam and a prestressed tension bolt between a beam top support column and a profiled steel guide beam; arranging a connecting chute inside the profiled steel guide beam, and adjusting the height of a hanging basket vertical plate through a heightening connecting rod; arranging a flexible rope net and an elastic bottom plate between a flexible connecting rod and the profiled steel guide beam; a guardrail support rod and a flexible guardrail rope can move along a railing chute under the action of a winding machine. The present application improves the assembly positioning accuracy and construction safety of the arch bridge.

Description

Technical Field

[0001] This application relates to the technical field of construction engineering, specifically to the construction method of a construction safety protection system for a continuous non-thrust arch bridge. Background Art

[0002] The construction of a continuous non-thrust arch bridge generally includes construction links such as hoisting arch ribs at the beam top, installing box girders at the arch bottom, and arranging construction hanging baskets. During on-site construction, how to reduce the impact of the external environment on hoisting construction, improve the positioning accuracy of the support structure, reduce the jacking construction resistance, and enhance the construction process safety have always been the key points and difficulties in on-site engineering control.

[0003] In the existing construction technology, Chinese Patent Publication No. CN205100087U discloses a protection device for decorative suspenders of a basket arch bridge, including decorative suspenders, steel box arches, and hoisting chains. The end of the decorative suspender is provided with a decorative suspender anchor head. One end of the hoisting chain is fixedly connected to the suspender anchor head, and the other end is fixedly connected to the steel box arch. Although this structure can meet the needs of steel box arch hoisting connection, it is difficult to reduce the impact of crosswind on hoisting stability and fails to synchronously achieve hoisting and secondary alignment in the air.

[0004] In view of this, in order to improve the construction quality of the construction safety protection system for a continuous non-thrust arch bridge, there is an urgent need for a construction method of a construction safety protection system for a continuous non-thrust arch bridge that can improve the hoisting positioning accuracy of arch ribs at the beam top, reduce the difficulty of auxiliary positioning of the support, and enhance the layout efficiency of sliding hanging baskets and flexible guardrails.

[0005] Application Content

[0006] The purpose of this application is to provide a construction method of a construction safety protection system for a continuous non-thrust arch bridge in view of the above problems existing in the prior art.

[0007] In order to achieve the above application purpose, the following technical solutions are adopted in this application: The construction method of a construction safety protection system for a continuous non-thrust arch bridge includes the following steps:

[0008] S00, Construction Preparation: Prepare box girders at the arch bottom, arch ribs at the beam top, and steel section girders in the prefabrication yard, and calculate and determine the bearing capacity of the support columns at the same time;

[0009] S10, Assembly of Box Girder at Arch Bottom: According to the spatial position of the box girder at the arch bottom, arrange the support columns, and sequentially set column top support plates, first support plates, and second support plates at the top of the support columns;

[0010] Set a vertical positioning body on the upper surface of the first support plate, and set a horizontal alignment bolt on the side surface of the first support plate;

[0011] Set a connecting guide wheel between the second support plate and the box girder at the arch bottom;

[0012] S20. Hoisting Structure Assembly of the Rib at the Top of the Beam: Connect the upper surface of the hoisting support beam to the first sling, connect the lower surface to the sliding hoisting beam through the sliding beam connection tenon, and connect it to the hoisting equipment through the first sling;

[0013] Install two angle-adjusting winches on the lower surface of the sliding hoisting beam, and install protective sleeves below the angle-adjusting winches;

[0014] Weld adjusting cross braces on the lower surfaces of the hoisting support beam and the sliding hoisting beam respectively, and set a transverse positioning body between the two mirror-image adjusting cross braces;

[0015] Pass the bottom end of the second sling through the protective sleeve and connect it to the beam top sling ring at the top of the rib at the top of the beam;

[0016] Successively set a first bottom plate and a support vertical rod on the upper surface of the bottom box girder of the arch, and set a vertical rod top plate at the top of the support vertical rod;

[0017] Set a bladder limiting ring on the vertical rod top plate, and set a support bladder inside the bladder limiting ring;

[0018] According to the spatial dimensions of the rib at the top of the beam, set rib support rods on the outer periphery of the bladder limiting ring, and perpendicularly weld the rib support rods to the vertical rod top plate;

[0019] Set a second bottom plate and a third bottom plate on the upper surface of the bottom box girder of the arch, and successively set a connecting support column, a column top spherical hinge and an arch rib support plate on the upper surface of the third bottom plate, and adjust the height of the third bottom plate through the bottom plate adjusting bolt;

[0020] S30. Hoisting of the Rib at the Top of the Beam: Use the hoisting equipment to hoist the rib at the top of the beam above the arch rib support plate and the rib support rods, and adjust the transverse position of the rib at the top of the beam through the transverse positioning body;

[0021] Adjust the verticality of the rib at the top of the beam through the second sling, and place the rib at the top of the beam on the arch rib support plate and the rib support rods;

[0022] Correct the vertical position of the rib at the top of the beam through the bottom plate adjusting bolt, and then press and fill the support bladder body into the support bladder;

[0023] S40. Setting of the Steel Guide Beam: Weld a beam top support column on the upper surface of the bottom box girder of the arch, set an upward concave arched support beam on the side of the beam top support column facing the steel guide beam, and set reinforcing support ribs between the beam top support column and the arched support beam;

[0024] Set a prestressed tension bolt between the arched support beam and the steel guide beam, and apply an upward prestress to the arched support beam and the steel guide beam through the prestressed tension bolt;

[0025] S50. Installation of the Sliding Hanging Basket: Set a guide beam connecting beam between the two mirror-image steel guide beams;

[0026] Weld connecting chutes longitudinally along the inner sidewall of the profiled steel guide beam, and connect the hanging basket support beam and the connecting chute through a connecting slide plate. Control the longitudinal position of the sliding hanging basket through the hanging basket cable;

[0027] Connect the lower surface of the hanging basket support beam to the hanging basket vertical plate through a height-adjusting connecting rod, and set a hanging basket bottom plate at the bottom end of the hanging basket vertical plate. Combine the hanging basket bottom plate and the hanging basket vertical plate to form a sliding hanging basket;

[0028] Weld one end of the rope net support rod to the profiled steel guide beam, and firmly connect the other end to the flexible connecting rod. Lay a flexible rope net between the flexible connecting rod and the profiled steel guide beam, and longitudinally lay an elastic bottom plate in the middle of the flexible rope net;

[0029] Paste elastic railing columns longitudinally and evenly spaced above the flexible connecting rod;

[0030] S60. Flexible guardrail layout: Weld two end support columns on the upper surface of the profiled steel guide beam, and set railing chutes circumferentially along the upper surface of the profiled steel guide beam;

[0031] Connect the bottom end of the guardrail support rod to the railing chute through a sliding connecting plate, and set a flexible railing rope between longitudinally adjacent guardrail support rods. Combine the guardrail support rod and the flexible railing rope to form a flexible guardrail;

[0032] Connect the guardrail support rod adjacent to the winding and pulling machine to the winding and pulling machine through a rope, and fix the winding and pulling machine on the end support column.

[0033] Further, in step S10, the cross-sections of the first support plate and the second support plate are both "L"-shaped, and screw holes connected to the transverse alignment bolts are provided on the sidewall of the first support plate.

[0034] Further, in step S10, the upper surface and the lower surface of the vertical adjustment body are respectively connected to the first support plate and the second support plate, and a hydraulic jack is used.

[0035] Further, in step S10, the connecting guide wheel is made of a rotating bearing or a universal ball hinge by rolling.

[0036] Further, in step S20, a hanging beam chute with a "T"-shaped cross-section is provided in the hoisting support beam. The lower surface of the sliding beam connecting tenon is welded to the sliding hanging beam, and the protective sleeve is connected to the sliding hanging beam through sleeve limiting ribs.

[0037] Further, in step S40, the plane of the arched support beam is circular arc-shaped, and the central angle is 10 - 30°.

[0038] Further, in step S40, the prestressed tension bolt includes a screw rod and a bolt, and the tightening directions of the screw rods on both sides of the bolt are opposite.

[0039] Furthermore, in step S50, the hanging basket vertical plates are arranged circumferentially around the hanging basket bottom plate and are perpendicularly welded to the hanging basket bottom plate. The flexible connecting rods are tied and connected to the rope net struts and the flexible rope net.

[0040] Furthermore, in step S60, the cross-section of the railing chute is in a "U" shape and is welded to the profiled steel guide beam.

[0041] Furthermore, the guardrail struts are tied and connected to the flexible guardrail ropes.

[0042] Compared with the prior art, the present application has the following beneficial effects:

[0043] 1) In the present application, a column top support plate, a first support plate and a second support plate are sequentially arranged at the top of the support column. A vertical positioning body is arranged on the upper surface of the first support plate, and a transverse alignment bolt is arranged on the side surface of the first support plate, enabling two-way positioning of the arch bottom box girder. At the same time, connecting guide wheels are arranged between the second support plate and the arch bottom box girder, reducing the resistance during the assembly and top push displacement construction of the arch bottom box girder.

[0044] 2) In the present application, the lower surface of the hoisting support beam is connected to the sliding hoisting beam through a sliding beam connecting tenon, and the transverse position of the beam top arch rib can be adjusted through the transverse positioning body, and the verticality of the beam top arch rib can be adjusted through the second suspension cable, achieving in-air alignment of the beam top arch rib. At the same time, a protective sleeve is sleeved outside the second suspension cable, reducing the swing of the beam top arch rib during hoisting and reducing the influence of windy weather on hoisting construction.

[0045] 3) In the present application, the height of the third bottom plate and the connecting support column is adjusted through the bottom plate adjustment bolt, and the top end of the connecting support column is connected to the arch rib support beam through a column top spherical hinge, achieving rotational support of the beam top arch rib. At the same time, a bladder limiting ring and a support bladder are arranged on the column top plate, and a bladder support body is pressure-filled into the support bladder, achieving airtight support between the lower support device and the beam top arch rib.

[0046] 4) In the present application, a concave upward arched support beam is arranged between the beam top support column and the profiled steel guide beam, and an upward pulling prestress is applied to the arched support beam and the profiled steel guide beam through prestressed tension bolts, effectively reducing the flexural stress at the connection part between the profiled steel guide beam and the arch bottom box girder.

[0047] 5) In the present application, chutes are longitudinally welded to the inner side wall of the profiled steel guide beam along the longitudinal direction of the profiled steel guide beam, enabling longitudinal movement of the hanging basket vertical plates, and the height of the hanging basket vertical plates can be adjusted through the height-adjusting connecting rods, achieving rapid adjustment of the position of the sliding hanging basket.

[0048] (6) In the present application, the position of the flexible connecting rod is limited by the rope net strut, and a flexible rope net and an elastic bottom plate are arranged between the flexible connecting rod and the profiled steel guide beam, achieving rapid deployment and safety improvement of the safety net.

[0049] (7) The guardrail strut and flexible railing rope of this application can move along the railing chute on the upper surface of the profiled steel guide beam under the action of a winding machine, realizing the rapid deployment of the flexible guardrail. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 is the construction flow chart of the construction safety protection system for the continuous non-thrust arch bridge of this application;

[0051] Figure 2 is Figure 1 Schematic diagram of the assembly of the bottom box girder of the arch and the hoisting structure of the arch rib on the beam top;

[0052] Figure 3 is Figure 1 Schematic diagram of the hoisting and alignment structure of the arch rib on the beam top;

[0053] Figure 4 is Figure 1 Schematic diagram of the connection structure between the profiled steel guide beam and the bottom box girder of the arch;

[0054] Figure 5 is Figure 1 Plan view of the installation of the sliding hanging basket and the layout structure of the flexible guardrail;

[0055] Figure 6 is Figure 5 Schematic diagram of the connection structure between the sliding hanging basket and the profiled steel guide beam;

[0056] Figure 7 is Figure 5 Schematic diagram of the layout structure of the flexible rope net;

[0057] Figure 8 is the schematic diagram of the connection structure between the 5 flexible railing ropes and the guardrail strut.

[0058] In the figure: 1. Bottom arch box girder; 2. Arch rib on the beam top; 3. Section steel guide beam; 4. Support column; 5. Support plate on the column top; 6. First support plate; 7. Second support plate; 8. Vertical position adjusting body; 9. Transverse alignment bolt; 10. Connecting guide wheel; 11. Hoisting support beam; 12. First suspension cable; 13. Slide beam connecting tenon; 14. Sliding hoisting beam; 15. Angle adjusting winch; 16. Protection sleeve; 17. Position adjusting cross brace; 18. Transverse positioning body; 19. Second suspension cable; 20. Hoisting ring on the beam top; 21. First bottom plate; 22. Support vertical rod; 23. Top plate of the vertical rod; 24. Pocket limiting ring; 25. Support pocket; 26. Arch rib support column; 27. Second bottom plate; 28. Third bottom plate; 29. Connecting support column; 30. Ball hinge on the column top; 31. Arch rib support plate; 32. Bottom plate position adjusting bolt; 33. Pocket support body; 34. Hoisting beam chute; 35. Sleeve limiting rib; 36. Support column on the beam top; 37. Arch-shaped support beam; 38. Reinforcing support rib; 39. Prestressed tension bolt; 40. Hanging basket bottom plate; 41. Hanging basket vertical plate; 42. Guide beam connecting beam; 43. Connecting chute; 44. Hanging basket support beam; 45. Connecting slide plate; 46. Hanging basket cable; 47. Height adjusting connecting rod; 48. Rope net support column; 49. Flexible connecting rod; 50. Flexible rope net; 51. Elastic bottom plate; 52. Elastic railing column; 53. Railing support column; 54. Flexible railing rope; 55. End support column; 56. Railing chute; 57. Sliding connecting plate; 58. Winching machinery. Detailed implementation manners

[0059] 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.

[0060] Those skilled in the art should understand that in the disclosure of the present application, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 construed as limiting the present application.

[0061] In this embodiment, Figure 1 is the construction flow chart of the construction safety protection system for a continuous non-thrust arch bridge, Figure 2 is Figure 1 the schematic structural diagram of the assembly of the bottom arch box girder and the hoisting of the arch rib on the beam top, Figure 3 is Figure 1 the schematic structural diagram of the hoisting and alignment of the arch rib on the beam top.Figure 4 Yes Figure 1 Schematic diagram of the connection structure between the profiled steel guide beam and the bottom arch box girder Figure 5 Yes Figure 1 Plan view of the installation of the sliding hanging basket and the layout structure of the flexible guardrail Figure 6 Yes Figure 5 Schematic diagram of the connection structure between the sliding hanging basket and the profiled steel guide beam Figure 7 Yes Figure 5 Schematic diagram of the layout structure of the flexible rope net Figure 8 Is the schematic diagram of the connection structure between the 5 flexible railing ropes and the guardrail struts

[0062] Refer to Figure 1 As shown, the construction method of the construction safety protection system for this continuous non-thrust arch bridge includes the following construction steps

[0063] S00, Construction preparation

[0064] Prepare the bottom arch box girder 1, the top arch rib 2 and the profiled steel guide beam 3 in the prefabrication yard

[0065] Calculate and determine the bearing capacity of the support column 4

[0066] S10, Assembly of the bottom arch box girder 1

[0067] According to the spatial position of the bottom arch box girder 1, arrange the support columns 4, and successively set the column top support plate 5, the first support plate 6 and the second support plate 7 at the top of the support column 4, set the vertical adjustment body 8 on the upper surface of the first support plate 6, and set the horizontal alignment bolt 9 on the side surface of the first support plate 6

[0068] Set the connecting guide wheel 10 between the second support plate 7 and the bottom arch box girder 1

[0069] S20, Assembly of the hoisting structure of the top arch rib 2

[0070] Connect the upper surface of the hoisting support beam 11 with the first hoisting cable 12, connect the lower surface with the sliding beam connection tenon 13 to the sliding hoisting beam 14, and connect with the external hoisting equipment through the first hoisting cable 12

[0071] Set two angle-adjusting winches 15 on the lower surface of the sliding hoisting beam 14, and set the protective sleeve 16 below the angle-adjusting winches 15

[0072] Weld the adjustment cross braces 17 on the lower surfaces of the hoisting support beam 11 and the sliding hoisting beam 14 respectively, and set the horizontal positioning body 18 between the two mirror-image adjustment cross braces 17

[0073] Pass the bottom end of the second hoisting cable 19 through the protective sleeve 16 and connect it with the top beam lifting ring 20 at the top of the top arch rib 2; successively set the first bottom plate 21 and the support vertical rod 22 on the upper surface of the bottom arch box girder 1, and set the vertical rod top plate 23 at the top of the support vertical rod 22

[0074] A bladder limiting ring 24 is provided on the top plate 23 of the vertical pole, and a supporting bladder 25 is arranged within the bladder limiting ring 24;

[0075] According to the spatial dimensions of the arch rib 2 at the beam top, arch rib support rods 26 are arranged on the outer periphery of the bladder limiting ring 24, and the arch rib support rods 26 are perpendicularly and welded to the top plate 23 of the vertical pole;

[0076] A second bottom plate 27 and a third bottom plate 28 are arranged on the upper surface of the bottom box girder 1 at the arch bottom, and a connecting support column 29, a column top spherical hinge 30 and an arch rib support plate 31 are successively arranged on the upper surface of the third bottom plate 28. The height of the third bottom plate 28 is adjusted by a bottom plate position adjusting bolt 32;

[0077] S30. Hoisting of the arch rib 2 at the beam top:

[0078] First, use an external hoisting device to hoist the arch rib 2 at the beam top above the arch rib support plate 31 and the arch rib support rods 26, and adjust the lateral position of the arch rib 2 at the beam top through the lateral positioning body 18;

[0079] Adjust the verticality of the arch rib 2 at the beam top through the second sling 19, and place the arch rib 2 at the beam top on the arch rib support plate 31 and the arch rib support rods 26;

[0080] Correct the vertical position of the arch rib 2 at the beam top through the bottom plate position adjusting bolt 32;

[0081] Then, pour a bladder support body 33 into the supporting bladder 25;

[0082] S40. Setting of the steel guide beam 3:

[0083] Weld a beam top support column 36 on the upper surface of the bottom box girder 1 at the arch bottom, provide an upward concave arched support beam 37 on the side of the beam top support column 36 facing the steel guide beam 3, and arrange reinforcing support ribs 38 between the beam top support column 36 and the arched support beam 37;

[0084] Set a prestressed tension bolt 39 between the arched support beam 37 and the steel guide beam 3, and apply an upward prestress to the arched support beam 37 and the steel guide beam 3 through the prestressed tension bolt 39;

[0085] S50. Installation of the sliding hanging basket (the sliding hanging basket is composed of a hanging basket bottom plate 40 and a hanging basket vertical plate 41):

[0086] Set a guide beam connecting beam 42 between two mirror-image steel guide beams 3; weld a connecting chute 43 longitudinally along the steel guide beam 3 on the inner side wall of the steel guide beam 3, connect the hanging basket support beam 44 and the connecting chute 43 through a connecting slide plate 45, and control the longitudinal position of the sliding hanging basket through a hanging basket cable 46;

[0087] Connect the lower surface of the hanging basket support beam 44 to the hanging basket vertical plate 41 through the height-adjusting connecting rod 47, and set the hanging basket bottom plate 40 at the bottom end of the hanging basket vertical plate 41;

[0088] Connect one end of the rope net support rod 48 to the profiled steel guide beam 3 by welding, and connect the other end firmly to the flexible connecting rod 49. Lay the flexible rope net 50 between the flexible connecting rod 49 and the profiled steel guide beam 3, and lay the elastic bottom plate 51 longitudinally along the middle of the flexible rope net 50;

[0089] Paste the elastic railing columns 52 longitudinally and evenly spaced above the flexible connecting rod 49;

[0090] S60. Layout of the flexible guardrail (the flexible guardrail is composed of the guardrail support rod 53 and the flexible railing rope 54):

[0091] Weld two end support columns 55 on the upper surface of the profiled steel guide beam 3, and set the railing chute 56 circumferentially along the upper surface of the profiled steel guide beam 3;

[0092] Connect the bottom end of the guardrail support rod 53 to the railing chute 56 through the sliding connecting plate 57, and set the flexible railing rope 54 between the longitudinally adjacent guardrail support rods 53;

[0093] Connect the guardrail support rod 53 adjacent to the winding and pulling machine 58 to the winding and pulling machine 58 through a rope, and fix the winding and pulling machine 58 on the end support column 55.

[0094] For the convenience of understanding, the following explains each professional term appearing in the above steps:

[0095] Both the arch bottom box girder 1 and the beam top arch rib 2 are rolled from steel plates with a steel plate thickness of 30 mm;

[0096] The profiled steel guide beam 3 is rolled from an H-shaped steel with a specification of 400×400×13×21.

[0097] According to the spatial position of the arch bottom box girder 1, layout the support columns 4, and the support columns 4 are rolled from steel pipes with a diameter of 300 mm;

[0098] Set the column top support plate 5, the first support plate 6 and the second support plate 7 in sequence at the top end of the support column 4. The column top support plate 5, the first support plate 6 and the second support plate 7 are all rolled from steel plates with a thickness of 10 mm. Among them, the cross sections of the first support plate 6 and the second support plate 7 are in an "L" shape, and screw holes for connecting with the transverse alignment bolt 9 are preset on the first support plate 6;

[0099] The transverse alignment bolt 9 is rolled from a screw rod with a diameter of 30 mm.

[0100] Set the vertical adjustment body 8 on the upper surface of the first support plate 6, and the vertical adjustment body 8 uses a hydraulic jack.

[0101] A connecting guide wheel 10 is arranged between the second support plate 7 and the arch bottom box girder 1, and the connecting guide wheel 10 adopts a stainless steel bearing with a diameter of 50 mm.

[0102] The hoisting support beam 11 is rolled from a steel plate with a thickness of 10 mm, and its cross section is rectangular. A hoisting beam chute 34 with a "T" - shaped cross section is arranged in the hoisting support beam 11. The cross section of the hoisting beam chute 34 is "T" - shaped and its width is 20 cm.

[0103] The upper surface of the hoisting support beam 11 is connected to the first suspension cable 12, and the lower surface is connected to the sliding suspension beam 14 through a sliding beam connecting tenon 13; the first suspension cable 12 adopts a steel wire rope with a diameter of 30 mm;

[0104] The sliding beam connecting tenon 13 has a "T" - shaped cross section with a width of 18 cm, is rolled from a steel plate with a thickness of 10 mm, and its bottom end is welded to the sliding suspension beam 14;

[0105] The sliding suspension beam 14 is rolled from an H - shaped steel with the specification of 200×200×8×12;

[0106] Two angle - adjusting winches 15 are arranged on the lower surface of the sliding suspension beam 14, and the angle - adjusting winches 15 adopt wire rope hoists.

[0107] A protective sleeve 16 is arranged below the angle - adjusting winch 15. The protective sleeve 16 is rolled from a steel pipe with a diameter of 60 mm and is connected to the sliding suspension beam 14 through a sleeve limiting rib 35. The sleeve limiting rib 35 is rolled from a steel plate with a thickness of 10 mm, has a width of 60 mm, and is welded to the protective sleeve 16 and the sliding suspension beam 14.

[0108] Adjusting position cross braces 17 are respectively welded on the lower surfaces of the hoisting support beam 11 and the sliding suspension beam 14. The adjusting position cross braces 17 are rolled from a steel plate with a thickness of 10 mm and have a width of 20 cm.

[0109] A transverse positioning body 18 is arranged between two mirror - image adjusting position cross braces 17, and the transverse positioning body 18 adopts a hydraulic jack.

[0110] The second suspension cable 19 adopts a steel wire rope with a diameter of 30 mm. The bottom end of the second suspension cable 19 passes through the protective sleeve 16 and is connected to the beam - top lifting ring 20 at the top of the beam - top arch rib 2;

[0111] The beam - top lifting ring 20 is rolled from a steel plate with a thickness of 20 mm and is welded to the beam - top arch rib 2.

[0112] The first bottom plate 21 and the support vertical rod 22 are successively arranged on the upper surface of the arch bottom box girder 1. The support vertical rod 22 is rolled from a steel pipe with a diameter of 200 mm, and a vertical rod top plate 23 is arranged at the top end of the support vertical rod 22; both the first bottom plate 21 and the vertical rod top plate 23 are rolled from steel plates with a thickness of 10 mm.

[0113] A bladder limiting ring 24 is welded on the vertical rod top plate 23. The bladder limiting ring 24 is rolled from a steel plate with a thickness of 10 mm and has a height of 10 cm; a support bladder 25 is arranged inside the bladder limiting ring 24. The support bladder 25 is sewn from rubber sheets with a thickness of 2 mm and is connected to an external grouting pipe.

[0114] According to the spatial dimensions of the arch rib 2 at the beam top, arch rib support rods 26 are arranged on the outer periphery of the bladder limiting ring 24. The arch rib support rods 26 are rolled from steel pipes with a diameter of 100 mm, and the arch rib support rods 26 are perpendicularly welded to the vertical rod top plate 23.

[0115] A second bottom plate 27 and a third bottom plate 28 are arranged on the upper surface of the arch bottom box girder 1. Both the second bottom plate 27 and the third bottom plate 28 are rolled from steel plates with a thickness of 10 mm, and a connecting support column 29, a column top spherical hinge 30 and an arch rib support plate 31 are successively arranged on the upper surface of the third bottom plate 28. The connecting support column 29 is rolled from a steel plate with a thickness of 10 mm and has a rectangular cross-section;

[0116] The column top spherical hinge 30 uses a spherical hinge with a diameter of 10 cm; the arch rib support plate 31 is rolled from a steel plate with a thickness of 10 mm, has a width of 30 cm, and the same curvature as the arch rib 2 at the beam top.

[0117] The bottom plate adjusting bolt 32 is rolled from a screw rod with a diameter of 30 mm and is connected to the third bottom plate 28 through a screw hole.

[0118] An external grouting device is used to grout self-compacting concrete with a grade of C35 into the support bladder 25 to form a bladder support body 33;

[0119] A beam top support column 36 is welded on the upper surface of the arch bottom box girder 1. The beam top support column 36 is rolled from an H-shaped steel with a specification of 200×200×8×12 and has a height of 1 m. An upward concave arched support beam 37 is arranged on the side of the beam top support column 36 facing the steel guide beam 3. The arched support beam 37 is rolled from a steel plate with a thickness of 10 mm, has a rectangular cross-section, a width of 20 cm, a height of 20 cm, and a central angle of 20°.

[0120] A reinforcing support rib 38 is arranged between the beam top support column 36 and the arched support beam 37;

[0121] The reinforcing support rib 38 is rolled from a steel pipe with a diameter of 100 mm and is welded to the beam top support column 36 and the arched support beam 37 at both ends respectively.

[0122] A prestressed tie bolt 39 is arranged between the arch supporting beam 37 and the profiled steel guide beam 3. The prestressed tie bolt 39 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, so as to apply an upward prestress to the arch supporting beam 37 and the profiled steel guide beam 3 through the prestressed tie bolt 39;

[0123] The sliding hanging basket is composed of a hanging basket bottom plate 40 and a hanging basket vertical plate 41. The hanging basket bottom plate 40 and the hanging basket vertical plate 41 are respectively rolled from steel plates with thicknesses of 2 mm and 10 mm.

[0124] A guide beam connecting beam 42 is arranged between two profiled steel guide beams 3 that are mirror - opposite to each other. The guide beam connecting beam 42 is rolled from a steel plate with a thickness of 10 mm and is welded to the profiled steel guide beam 3.

[0125] A connecting chute 43 is longitudinally welded to the inner side wall of the profiled steel guide beam 3 along the profiled steel guide beam 3. The connecting chute 43 is rolled from a steel plate with a thickness of 10 mm and is connected to the hanging basket supporting beam 44 through a connecting slide plate 45. Both the hanging basket supporting beam 44 and the connecting slide plate 45 are rolled from steel plates with a thickness of 10 mm and have a width of 20 cm.

[0126] The longitudinal position of the sliding hanging basket is controlled by a hanging basket cable 46. The hanging basket cable 46 is made of a steel wire rope with a diameter of 30 mm.

[0127] The lower surface of the hanging basket supporting beam 44 is welded to the hanging basket vertical plate 41 through a height - adjusting connecting rod 47. The height - adjusting connecting rod 47 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.

[0128] The rope net support rod 48 is rolled from a steel pipe with a diameter of 10 cm. One end of the rope net support rod 48 is welded to the profiled steel guide beam 3, and the other end is firmly connected to the flexible connecting rod 49.

[0129] The flexible connecting rod 49 is made of a rubber tube with a diameter of 100 mm; a flexible rope net 50 is arranged between the flexible connecting rod 49 and the profiled steel guide beam 3. The flexible rope net 50 is made of a braided rope net.

[0130] An elastic bottom plate 51 is longitudinally laid in the middle of the flexible rope net 50 along the flexible rope net 50. The elastic bottom plate 51 is cut from a rubber sheet with a thickness of 2 mm. Elastic railing columns 52 are longitudinally and evenly spaced and pasted above the flexible connecting rod 49 along the flexible connecting rod 49. The elastic railing columns 52 are made of rubber columns with a diameter of 10 cm.

[0131] The flexible guardrail is composed of a guardrail support rod 53 and a flexible guardrail rope 4. The guardrail support rod 53 is rolled from a steel pipe with a diameter of 60 mm, and the bottom end is perpendicularly welded to the sliding connecting plate 57;

[0132] The flexible railing rope 54 uses a steel wire rope with a diameter of 20 mm. The sliding connecting plate 57 is rolled from a steel plate with a thickness of 2 mm and a width of 10 cm.

[0133] Two end support columns 55 are welded on the upper surface of the profiled steel guide beam 3. The end support columns 55 are rolled from steel pipes with a diameter of 100 mm.

[0134] The railing chute 56 is welded circumferentially along the upper surface of the profiled steel guide beam 3. The railing chute 56 is rolled from a steel plate with a thickness of 2 mm, has a cross-section in the shape of a "U", is welded to the profiled steel guide beam 3, has a width of 15 cm, and a chute for the guardrail strut 53 to slide is provided on its upper surface.

[0135] The winding and pulling machine 58 uses a wire rope winch.

[0136] The parts not detailed in this application are prior art, so they are not detailed in this application.

[0137] It can be understood that the term "one" 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 this element can be multiple. The term "one" cannot be understood as a limitation on the number.

[0138] Although terms such as are used more in this article, 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.

[0139] This application is not limited to the above best implementation mode. Anyone can obtain other various forms of products inspired by this application. However, no matter what changes are made in its shape or structure, as long as it has a technical solution identical or similar to this application, it falls within the protection scope of this application.

Claims

1. A construction method for a safety protection system for a continuous non-thrust arch bridge, characterized in that: The following steps are involved: S00, construction preparation: prepare the arch bottom box beam (1), the beam top arch rib (2) and the steel guide beam (3) at the prefabrication site, and calculate and determine the bearing capacity of the support column (4); S10, assembling the arch bottom box beam (1): arranging the support columns (4) according to the spatial position of the arch bottom box beam (1), and sequentially arranging the column top support plate (5), the first support plate (6) and the second support plate (7) on the top of the support columns (4); A vertical position adjusting body (8) is provided on the upper surface of the first support plate (6), and a horizontal position adjusting bolt (9) is provided on the side surface of the first support plate (6); A connecting guide wheel (10) is provided between the second support plate (7) and the arch bottom box beam (1); S20, assembling the hoisting structure of the beam top arch rib (2): connecting the upper surface of the hoisting support beam (11) to the first sling (12), connecting the lower surface to the sliding hoisting beam (14) via the sliding beam connecting hook (13), and connecting to the hoisting equipment via the first sling (12); Two angle-adjusting and winding machines (15) are provided on the lower surface of the sliding beam (14), and a protective sleeve (16) is provided below the angle-adjusting and winding machines (15); A positioning cross brace (17) is welded to the lower surface of the lifting support beam (11) and the sliding lifting beam (14), and a transverse positioning body (18) is provided between the two mirror-image-opposite positioning cross braces (17); The bottom end of the second sling (19) passes through the protective sleeve (16) and is connected to the beam top lifting ring (20) at the top end of the beam top arch rib (2); A first bottom plate (21) and a supporting vertical rod (22) are sequentially arranged on the upper surface of the arch bottom box beam (1), and a vertical rod top plate (23) is arranged at the top end of the supporting vertical rod (22); A bag limiting ring (24) is provided on the top plate (23) of the vertical pole, and a supporting bag (25) is provided inside the bag limiting ring (24); According to the spatial size of the beam top arch rib (2), an arch rib support rod (26) is arranged on the periphery of the bag limiting ring (24), and the arch rib support rod (26) is vertically welded to the vertical pole top plate (23); A second bottom plate (27) and a third bottom plate (28) are provided on the upper surface of the arch bottom box beam (1), and a connecting support column (29), a column top ball hinge (30) and an arch rib support plate (31) are sequentially provided on the upper surface of the third bottom plate (28), and the height of the third bottom plate (28) is adjusted by a bottom plate adjusting bolt (32); S30, hoisting the beam top arch rib (2); hoisting the beam top arch rib (2) to above the arch rib support plate (31) and the arch rib support rod (26) using a hoisting device, and adjusting the lateral position of the beam top arch rib (2) by using a lateral positioning body (18); The verticality of the beam top arch rib (2) is adjusted by the second sling (19), and the beam top arch rib (2) is suspended on the arch rib support plate (31) and the arch rib support rod (26); Correct the vertical position of the beam top arch rib (2) through the bottom plate adjustment bolt (32), and then pressurize the bag support body (33) into the support bag (25); S40, setting the steel guide beam (3): welding a beam top support column (36) on the upper surface of the arch bottom box beam (1), and setting an upward concave arch support beam (37) on the side of the beam top support column (36) facing the steel guide beam (3), and setting a reinforcing support bar (38) between the beam top support column (36) and the arch support beam (37); A prestressed tension bolt (39) is provided between the arched support beam (37) and the steel guide beam (3), and an upward prestressed force is applied to the arched support beam (37) and the steel guide beam (3) through the prestressed tension bolt (39); S50, installation of the sliding hanging basket: installing a guide beam connecting beam (42) between two mirror-image-opposite steel guide beams (3); A connecting chute (43) is welded longitudinally along the inner side wall of the steel guide beam (3), and a hanging basket support beam (44) is connected to the connecting chute (43) via a connecting slide plate (45), and the longitudinal position of the sliding hanging basket is controlled by a hanging basket cable (46); The lower surface of the hanging basket support beam (44) is connected to the hanging basket vertical plate (41) through the height adjustment connecting rod (47), and a hanging basket bottom plate (40) is provided at the bottom end of the hanging basket vertical plate (41), and the hanging basket bottom plate (40) and the hanging basket vertical plate (41) are combined to form a sliding hanging basket; One end of the rope net support rod (48) is welded to the steel guide beam (3), and the other end is firmly connected to the flexible connecting rod (49); a flexible rope net (50) is arranged between the flexible connecting rod (49) and the steel guide beam (3); and an elastic bottom plate (51) is laid in the middle of the flexible rope net (50) along the longitudinal direction of the flexible rope net (50); Pasting elastic posts (52) at even intervals along the longitudinal direction of the flexible connecting rod (49) above the flexible connecting rod (49); S60, flexible guardrail arrangement: welding two end support columns (55) on the upper surface of the steel guide beam (3), and arranging a guardrail slide groove (56) along the upper surface of the steel guide beam (3) in a circumferential direction; The bottom end of the guardrail strut (53) is connected to the railing chute (56) via a sliding connecting plate (57), and a flexible railing rope (54) is arranged between longitudinally adjacent guardrail struts (53). The guardrail struts (53) and the flexible railing rope (54) are combined to form a flexible guardrail; The guardrail support rod (53) adjacent to the winding and pulling machine (58) is connected to the winding and pulling machine (58) through a rope, and the winding and pulling machine (58) is fixed on the end support column (55).

2. The construction method of the continuous non-thrust arch bridge construction safety protection system according to claim 1 is characterized in that: In step S10, the cross sections of the first support plate (6) and the second support plate (7) are both L-shaped, and screw holes connected to the transverse alignment bolts (9) are provided on the side walls of the first support plate (6).

3. The construction method of the safety protection system for continuous non-thrust arch bridge construction according to claim 1 is characterized in that: In step S10, the upper surface and the lower surface of the vertical position adjusting body (8) are connected to the first support plate (6) and the second support plate (7) respectively, and a hydraulic jack is used.

4. The construction method of the safety protection system for continuous non-thrust arch bridge construction according to claim 1 is characterized in that: In step S10, the connecting guide wheel (10) is rolled using a rotary bearing or a universal ball joint.

5. The construction method of the continuous non-thrust arch bridge construction safety protection system according to claim 1 is characterized in that: In step S20, a lifting beam slide groove (34) with a T-shaped cross section is provided in the lifting support beam (11), the lower surface of the sliding beam connecting member (13) is welded to the sliding lifting beam (14), and the protective sleeve (16) is connected to the sliding lifting beam (14) via a sleeve limiting rib (35).

6. The construction method of the safety protection system for continuous non-thrust arch bridge construction according to claim 1 is characterized in that: In step S40, the plane of the arched support beam (37) is in an arc shape, and the central angle of the circle is 10 to 30 degrees.

7. The construction method of the safety protection system for continuous non-thrust arch bridge construction according to claim 1 is characterized in that: In step S40, the prestressed tension bolt (39) includes a screw rod and a bolt, and the tightening directions of the screw rods on both sides of the bolt are opposite.

8. The method for constructing a safety protection system for continuous non-thrust arch bridge construction according to any one of claims 1 to 7, characterized in that: In step S50, the hanging basket upright plate (41) is circumferentially arranged around the hanging basket bottom plate (40) and vertically welded to the hanging basket bottom plate (40), and the flexible connecting rod (49) is tied and connected to the rope net support rod (48) and the flexible rope net (50).

9. The method for constructing a safety protection system for continuous non-thrust arch bridge construction according to any one of claims 1 to 7, characterized in that: In step S60, the cross section of the railing chute (56) is U-shaped and is welded to the steel guide beam (3).

10. The method for constructing a safety protection system for a continuous non-thrust arch bridge according to any one of claims 1 to 7, characterized in that: The guardrail support rod (53) is tied and connected with the flexible guardrail rope (54).

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