CN112921819A - Safe operation platform system used in construction process of double-flying-wing arch bridge - Google Patents
Safe operation platform system used in construction process of double-flying-wing arch bridge Download PDFInfo
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- CN112921819A CN112921819A CN202110238586.5A CN202110238586A CN112921819A CN 112921819 A CN112921819 A CN 112921819A CN 202110238586 A CN202110238586 A CN 202110238586A CN 112921819 A CN112921819 A CN 112921819A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D4/00—Arch-type bridges
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Abstract
The invention discloses a safe operation platform system used in a double-flying-wing arch bridge construction process, and belongs to the technical field of bridge construction. The safe operation platform system comprises an overhanging beam operation platform, a main arch operation platform, an auxiliary arch operation platform and a steel pipe bracket operation platform; the steel pipe support operation platform is fixedly connected with the steel pipe support; the main arch operating platform comprises a large-angle inclined operating platform and a small-angle arch rib operating platform. The invention improves the safety of the double-flying-wing arch bridge construction, facilitates the safe construction of operators and ensures that the construction is more standard.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a safe operation platform system used in a double-flying-wing arch bridge construction process.
Background
With the increasing maturity of bridge construction technology and the increasing aesthetic requirements of people on bridges, double flying wing arch bridges begin to attract attention and advocate. Because the uniqueness of bridge type, conditions such as processing installation can't satisfy the construction demand with the project organization of bridge, work progress in the conventional operation platform, for the operation personnel provide suitable and safe operation environment, have great construction potential safety hazard. Therefore, the invention provides a safe operation platform system used in the construction process of a double-flying-wing arch bridge, which is used for manufacturing an operation platform matched with a bridge structure form according to different operation environments, and provides convenience for construction while ensuring the safety of operators.
Disclosure of Invention
The invention aims to solve the problems and provides a safe operation platform system used in the construction process of a double-flying-wing arch bridge, so that the construction safety of the double-flying-wing arch bridge is improved, the safe construction of operators is facilitated, and the construction is more standard.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a safe operation platform system used in the construction process of a double-flying wing arch bridge comprises a main beam, two extending beams, two main arches, two auxiliary arches and a steel pipe bracket for the construction support of the main arches and the auxiliary arches, wherein the two extending beams are arranged on the two sides of the main beam,
the safe operation platform system comprises an overhanging beam operation platform, a main arch operation platform, an auxiliary arch operation platform and a steel pipe bracket operation platform; the steel pipe support operation platform is fixedly connected with the steel pipe support;
the main arch operating platform comprises a large-angle inclined operating platform and a small-angle arch rib operating platform:
the large-angle inclined operating platform comprises a first pedal, a second pedal, a bracket inclined strut, a first ladder stand and a first protective guard; the first pedal and the second pedal are respectively positioned at two sides of the main arch, and the bottom surfaces of the middle parts of the first pedal and the second pedal are connected with the top of the steel pipe support; the bottom surfaces of the two sides of the first pedal are also connected with the main arch through bracket inclined struts; two ends of the first ladder stand are respectively connected with the first pedal and the second pedal; a first handrail is arranged on the side surface of the first ladder stand; the edges of the first pedal and the second pedal are also fixed with a first guard rail and fully paved with a first checkered plate;
the small-angle arch rib operating platform comprises a saddle-type operating platform, the left side and the right side of the saddle-type operating platform are fixed with the main arch at the top, a plurality of rectangular protective rings arranged at intervals are arranged on the two sides of the saddle-type operating platform, and the uppermost rectangular protective ring is connected with the top of the saddle-type operating platform through a connecting rod.
Furthermore, the overhanging beam operating platform comprises a vertical protective cage, a third ladder stand and a third pedal; the third pedal is parallel to and fixedly connected with the inclined bottom plate of the extending beam; the upper end of the vertical protective cage is connected with a platform main body bearing structure of the extending beam, and the lower end of the vertical protective cage is fixedly connected with the outer side of one end of the third pedal; the third ladder stand is arranged in the vertical protective cage, the upper end of the third ladder stand is connected with the platform main body bearing structure of the extending beam, and the lower end of the third ladder stand is fixedly connected with one end of a third pedal.
Further, the secondary arch operating platform comprises:
the bottom welding platform is positioned below the auxiliary arch and extends along the transverse direction of the bridge, and the bottom welding platform is used for being fixedly connected with the steel pipe bracket for assembling the auxiliary arch;
the two pairs of mounting platforms are arranged at intervals along the length direction of the auxiliary arch, are respectively positioned on two opposite sides of the bottom welding platform, are positioned above the bottom welding platform, are connected with the bottom welding platform through a fourth ladder stand, and are respectively used for being connected with a steel pipe frame for assembling the auxiliary arch; and
two top welded platform, two top welded platform all are located the top of vice arch, are used for being connected with the first side and the second side of vice arch respectively, and two top welded platform slope settings, top welded platform pass through the fifth cat ladder and are connected with bottom welded platform.
Further, the steel pipe support operating platform comprises a plurality of fourth foot pedals which are arranged at intervals; four corners of the fourth pedal are welded and fixed with the steel pipe bracket; two adjacent fourth foot pedals are connected through a sixth ladder; a second pattern plate is paved on the bottom surface of the fourth pedal plate; and a second protective guard and a foot blocking plate are arranged at the edge of the fourth pedal, the second protective guard is positioned on the outer side of the foot blocking plate, and the height of the second protective guard is greater than that of the foot blocking plate.
Furthermore, a second ladder stand is arranged in the rectangular protective ring, the upper end of the second ladder stand is connected with the top of a main arch in the saddle type operating platform, and the lower end of the second ladder stand is fixedly connected with a top platform on the steel pipe support; the distance between the step plates on the second ladder stand is 30cm, and the step plates are made of angle steel.
Furthermore, a second handrail is welded on the sixth ladder stand and is made of angle steel.
Further, the first pedal, the second pedal and the third pedal are all steel plates.
Furthermore, an anti-slip strip is arranged in each 1m of the top operation area of the saddle type operation platform.
Furthermore, anti-slip strips welded by angle steel are arranged on the bottom surfaces of the first pedal and the second pedal at intervals of 30 cm.
By adopting the technical scheme, the invention has the beneficial effects that:
the safe operation platform system comprises the overhanging beam operation platform, the main arch operation platform, the auxiliary arch operation platform and the steel pipe support operation platform, and can provide a safe and reliable operation platform for the construction of the double-flying-wing arch bridge. Compared with the conventional operation platform, the invention saves the cost, improves the safety of the construction process to the maximum extent and ensures the smooth construction. The invention is an operation platform which is manufactured according to different operation environments and is matched with the bridge structure form, thereby ensuring the safety of operators and providing convenience for construction.
The invention designs a main arch operating platform comprising a large-angle inclined operating platform and a small-angle arch rib operating platform in a fixed mode aiming at special conditions of a main arch, such as large inclination angle, ultrahigh height, sand wind and the like, wherein the large-angle inclined operating platform comprises a first pedal, a second pedal, a bracket inclined strut, a first ladder stand, a first protective fence and the like, and the small-angle arch rib operating platform is a cage-shaped saddle type operating platform, so that the large-angle inclined operating platform and the small-angle arch rib operating platform are firmly fixed with a main arch and a steel pipe bracket, the protection is good, the safety is high, the potential risk rate and the accident occurrence rate of the main arch operating platform are 0 finally, and the engineering construction process is safer, convenient, rapid and strong in pertinence.
Drawings
FIG. 1 is a schematic view of the overall structure of the double-flying-wing arch bridge construction process (steel pipe bracket is not shown);
FIG. 2 is a front view of FIG. 1 (with the steel tube holder shown);
FIG. 3 is a schematic structural view of an outrigger operation platform according to the present invention;
FIG. 4 is a schematic structural view of the large-angle tilting operation platform according to the present invention;
FIG. 5 is a schematic structural view of a small-angle rib operating platform according to the present invention;
FIG. 6 is a schematic structural diagram of an auxiliary arch operating platform according to the present invention;
FIG. 7 is a schematic structural view of the steel pipe support operating platform according to the present invention.
In the figure, 101-main beam, 102-overhanging beam, 103-main arch, 104-auxiliary arch, 105-steel tube bracket, 201-overhanging beam operation platform, 202-main arch operation platform, 2021-large angle inclined operation platform, 2022-small angle arch rib operation platform, 203-auxiliary arch operation platform, 2031-bottom welding platform, 2032-installation platform, 2033-top welding platform, 204-steel tube bracket operation platform, 1-vertical protection cage, 2-third ladder stand, 3-third pedal stand, 4-first pedal stand, 5-second pedal stand, 6-bracket inclined support, 7-first ladder stand, 8-first handrail stand, 9-first guard rail, 10-first pattern plate, 11-saddle type operation platform, 12-rectangular protection ring, 13-connecting rod, 14-second ladder stand, 15-step plate, 16-fourth pedal, 17-second pattern plate, 18-second protective guard, 19-foot baffle, 20-sixth ladder stand, 21-second handrail, 22-fourth ladder stand and 23-fifth ladder stand.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Examples
Referring to fig. 1 (steel pipe support 105 is not shown in the figure to avoid the disorder of lines in the figure) and fig. 2, a safe operation platform system for a double-flying-wing arch bridge construction process comprises a main beam 101, two overhanging beams 102 arranged at two sides of the main beam 101, two main arches 103 and two auxiliary arches 104 arranged at two sides of the main beam 101, and steel pipe supports 105 for construction support of the main arches 103 and the auxiliary arches 104. The safe operation platform system comprises an overhanging beam operation platform 201, a main arch operation platform 202, an auxiliary arch operation platform 203 and a steel pipe support operation platform 204; the overhanging beam operation platform 201 is fixedly connected with the overhanging beam 102, the main arch operation platform 202 is fixedly connected with the main arch 103 and the steel pipe bracket 105, the auxiliary arch operation platform 203 is fixedly connected with the auxiliary arch 104 and the steel pipe bracket 105, and the steel pipe bracket operation platform 204 is fixedly connected with the steel pipe bracket 105.
As shown in fig. 3, the outrigger operation platform 201 includes a vertical protection cage 1, a third ladder 2, and a third pedal 3; the cantilever beam operation platform 201 is made of Q235B carbon steel, and for facilitating the operation of the personnel, the third pedal 3 is parallel to and fixedly connected with the inclined bottom plate of the cantilever beam 102, and the included angle between the third pedal 3 and the horizontal plane is 24 degrees in this embodiment. The vertical protection cage 1 is used as an upper and lower passage for people, the upper end of the vertical protection cage is connected with a platform main body bearing structure of the overhanging beam 102, and the lower end of the vertical protection cage is fixedly connected with the outer side of one end of the third pedal 3. The third ladder stand 2 is arranged in the vertical protection cage 1, so that the climbing of personnel is facilitated, and the vertical protection cage 1 plays a good role in protection. And the upper end of the third ladder stand 2 is connected with the platform main body bearing structure of the overhanging beam 102, and the lower end is fixedly connected with one end of the third pedal 3. The vertical protective cage 1 or the third ladder stand 2 can provide a suspension point for the worker to wear the safety belt.
Through the in-service use effect, can draw, the stress of outrigger operation platform 201 is clear and definite, factor of safety is high, simple structure, and actual maneuverability is strong, has both guaranteed high altitude welding operation personnel's safety, does not influence bridge major structure again, has improved the efficiency of construction.
The main arch operating platform 202 includes a large angle inclined operating platform 2021 and a small angle rib operating platform 2022.
Because the main arch 103 has a maximum angle of 57 degrees along the bridge direction, has a large gradient and is difficult to move and operate, and an operator needs to perform the ring opening welding, polishing and coating work of the steel box arch under the environment, the large-angle inclined operating platform 2021 is designed specially for the operating condition (30-57 degrees along the bridge direction).
As shown in fig. 4, the large-angle tilting operation platform 2021 comprises a first pedal 4, a second pedal 5, a corbel brace 6, a first ladder stand 7 and a first guard rail 9; the first pedal plate 4 and the second pedal plate 5 are respectively positioned at two sides of the main arch 103, the first pedal plate 4 is a circle of platform arranged according to the structure of the main arch 103, and the bottoms of two sides of the first pedal plate 4 are respectively provided with 2 corbel inclined struts 6 which are 45 degrees with the main arch 103 for fixing, so that the bottom surfaces of two sides of the first pedal plate 4 are fixedly connected with the main arch 103 through the corbel inclined struts 6. And the bottom surfaces of the middle parts of the first pedal 4 and the second pedal 5 are both connected with the top of the steel pipe bracket 105, and the steel pipe bracket 105 plays a role in supporting and fixing. The second pedal 5 encloses the lower part of the main arch 103, which is convenient for the safety construction of constructors. Anti-slip strips (not shown) welded by angle steel are arranged on the bottom surfaces of the first pedal 4 and the second pedal 5 at intervals of 30 cm. The edges of the first pedal 4 and the second pedal 5 are also fixed with a first guard rail 9 with the height of 1.2m, and the bottom surfaces of the first pedal 4 and the second pedal 5 are both provided with a first checkered plate 10 with the thickness of 3 mm. The first pedal 4 is connected with the second pedal 5 through a first ladder stand 7; the side of first cat ladder 7 is equipped with first second handrail 8, prevents that the operation personnel from falling down, toppling over. In this embodiment, the width of the first ladder stand 7 is 80cm, and the first ladder stand 7 can be used for people to go up and down and also can play a role in fixed connection.
In actual operation, an operator can climb the top of the steel pipe support 105 to reach the second pedal plate 5, can weld, polish, coat and the like near the annular opening of the main arch 103 through the first ladder stand 7, and the whole process has anti-slip, anti-falling and anti-toppling measures, so that the safety of the operator in operation at the large-angle inclined part of the main arch is effectively improved.
The main arch is relatively gentle in angle when the bridge direction is 0-30 degrees, but has a relatively high height of about 71m, belongs to special-grade high-altitude operation, is free of any protection, and has suddenness and unpredictability by combining northern climate (windy and sandy weather), so that the small-angle arch rib operating platform 2022 is designed according to the characteristics.
As shown in fig. 5, the small-angle arch rib operating platform 2022 is made of Q345B carbon alloy steel, and in this embodiment, the small-angle arch rib operating platform 2022 is a saddle structure as a whole, that is, the saddle operating platform 11. The small-angle arch rib operating platform 2022 is cage-shaped, and the left side, the right side and the top are welded and fixed with the main arch 103, so that the small-angle arch rib operating platform can firmly ride on the main arch 103 like a saddle. A plurality of rectangular protective rings 12 arranged at intervals are arranged on two sides of the saddle-type operating platform 11, and the uppermost rectangular protective ring 12 is connected with the top of the saddle-type operating platform 11 through a connecting rod 13. The rectangular protective rings 12 are tightly attached to two sides of the main arch, and can be used as a ladder stand and play a role in safety protection. In this embodiment, the distance from the bottom ends of the two sides of the small-angle arch rib operating platform 2022 to the top of the steel pipe support 105 is 30cm, the rectangular protective ring 12 is arranged at intervals of 40cm, the top operating area is provided with an anti-slip strip at intervals of 60cm, and a plurality of safety belt hanging points are arranged above the operating area of the operator.
Although the rectangular protective ring 12 can be used as a ladder stand, no protective frame is arranged on the periphery of the rectangular protective ring 12, in order to further ensure the safety of operators, a second ladder stand 14 can be further arranged in the rectangular protective ring 12, the upper end of the second ladder stand 14 is connected with the top of a main arch 103 in the saddle type operating platform 11, the lower end of the second ladder stand 14 is fixedly connected with a top platform on a steel pipe bracket 105, the distance between the step plates 15 on the second ladder stand 14 is 30cm, and the step plates 15 are made of angle steel. Because the second ladder stand 14 is arranged in the rectangular protective ring 12, which is equivalent to a frame for surrounding, the climbing and operation safety is greatly improved.
During operation, the operating personnel reaches the vault through climbing the small-angle arch rib operating platform 2022, the cage type structure can prevent the personnel from falling and falling down in the moving process, and the saddle type structure can firmly fix the operating platform, so that the safety risk of vault circular opening operation is reduced. According to the result of the regular inspection of the safety platform, no potential safety hazard is found, the incidence rate of the potential safety hazard is 0, and the design of the small-angle arch rib operating platform 2022 completely meets the requirements.
Because the angle of the auxiliary arch 104 of the double-flying-wing arch bridge is 45 degrees inclined inwards along the transverse bridge direction, the maximum angle along the bridge direction is 18 degrees, the erection structure is a space special-shaped steel structure, the cross section is diamond-shaped, and when the auxiliary arch 104 is arched for operation, personnel cannot directly stand above the auxiliary arch due to bridge design factors, so that the auxiliary arch operation platform 203 is designed. As shown in fig. 6, the auxiliary arch operating platform 203 includes:
a bottom welded platform 2031 which is located below the sub-arch 104 and extends in the bridge transverse direction, the bottom welded platform 2031 being used for fixedly connecting with the steel pipe bracket 105 for assembling the sub-arch 104;
the mounting platform 2032 comprises two pairs of mounting platforms 2032, wherein the two pairs of mounting platforms 2032 are arranged at intervals along the length direction of the auxiliary arch 104, the two pairs of mounting platforms 2032 are respectively positioned at two opposite sides of the bottom welding platform 2031, each pair of mounting platforms 2032 is positioned above the bottom welding platform 2031, each mounting platform 2032 is connected with the bottom welding platform 2031 through a fourth ladder stand 22, and each pair of mounting platforms 2032 are respectively used for being connected with a steel pipe frame 400 for assembling the auxiliary arch 104; and
two top welded platform 2033, two top welded platform 2033 all are located the top of vice arch 104, are used for being connected with the first side 210 and the second side 220 of vice arch 104 respectively, and two top welded platform 2033 slope settings, top welded platform 2033 are connected with bottom welded platform 2031 through fifth cat ladder 23.
The auxiliary arch operating platform 203 is suitable for welding the upper surface of the inclined arch rib; the setting of two pairs of mounting platform is convenient for at the bottom both sides welding support frame of tilting arch rib to support the tilting arch rib, the arch rib inclination changes when preventing the installation, with further improvement installation accuracy, in addition, mounting platform still can be used to the operation such as the excision of arch rib lug, makes its function diversified.
The auxiliary arch operating platform 203 is completely matched with the special-shaped space structure of the auxiliary arch 104, has simple structure, convenient manufacture and good stability, solves the difficulty that personnel are difficult to operate on the auxiliary arch, and has the greatest characteristic of detachable function, can continuously move along with the construction progress of the auxiliary arch 104, can be detached for use, reduces the safety risk and simultaneously improves the construction efficiency.
The secondary arch operating platform 203 of the present invention is the same as that of the applicant's prior application (application No. 202021244468.2, entitled "operating platform for inclined arch rib installation"), and will not be described herein again for brevity.
Because the double-flying-wing arch bridge adopts the ultrahigh-space special-shaped support as the temporary support structure of the bridge, the steel pipe supports are erected and complicated in construction site, the height of the steel pipe supports is different, and the steel pipe support operating platform 204 is designed for meeting the requirements of safe production. As shown in fig. 7, the steel pipe bracket operating platform 204 includes a plurality of fourth pedals 16 arranged at intervals, and four corners of the fourth pedals 16 are welded and fixed with the steel pipe bracket 105; a second pattern plate 17 with the thickness of 3mm is laid on the third pedal 16; a second protective guard 18 with the height of 1.2m and a foot stopping plate 19 with the height of 20cm are arranged at the edge of the third pedal 16, and the second protective guard 18 is positioned at the outer side of the foot stopping plate 19. Wherein, two adjacent fourth running-boards 16 are connected through the sixth cat ladder 20, and the distance between two adjacent fourth running-boards 16 is 3.5 m. A second handrail 21 is welded on the sixth ladder stand 20, and the second handrail 21 is made of angle steel. The fourth pedal 16 is provided with a stair opening, the stair opening is protected on three sides, and all safety facilities are sprayed with red and white warning colors, so that important construction parts are clear at a glance.
The steel pipe support operating platform 204 is standard, standard and strong in warning effect, provides convenience for operators to weld the temporary structure, inspect managers, move main arches and auxiliary arches up and down, and is safe and reliable.
In this embodiment, the first pedal 4, the second pedal 5, the third pedal 3 and the fourth pedal 16 are all made of steel plates, so as to improve the safety performance and the service life of the present invention.
According to the invention, by arranging the safe operation platform system comprising the overhanging beam operation platform 201, the main arch operation platform 202, the auxiliary arch operation platform 203 and the steel pipe bracket operation platform 204, a safe and reliable operation platform can be provided for the construction of the double-flying-wing arch bridge. Compared with the conventional operation platform, the invention saves the cost, improves the safety of the construction process to the maximum extent and ensures the smooth construction. The invention is an operation platform which is manufactured according to different operation environments and is matched with the bridge structure form, thereby ensuring the safety of operators and providing convenience for construction.
Aiming at special conditions such as a large inclination angle, ultrahigh height, sand wind and the like of a main arch, the invention designs a main arch operating platform 202 comprising a large-angle inclined operating platform 2021 and a small-angle arch rib operating platform 2022 in a shaping way, wherein the large-angle inclined operating platform 2021 comprises a first foot pedal 4, a second foot pedal 5, a bracket inclined strut 6, a first ladder stand 7, a first protective guard 9 and the like, and the small-angle arch rib operating platform is a cage-shaped saddle large-angle operating platform 11, so that the small-angle inclined operating platform 2021 and the small-angle arch rib operating platform 2022 are firmly fixed with the main arch 103 and a steel pipe bracket 105, the protection is good, the safety is high, finally, the hidden danger rate and the accident rate of the main arch operating platform 202 are 0, and the engineering construction process is safer, convenient, rapid and strong in pertinence.
The above description is intended to describe in detail the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the claims of the present invention, and all equivalent changes and modifications made within the technical spirit of the present invention should fall within the scope of the claims of the present invention.
Claims (9)
1. A safe operation platform system used in the construction process of a double-flying wing arch bridge, the double-flying wing arch bridge comprises a main beam (101), two extending beams (102) arranged at two sides of the main beam (101), two main arches (103), two auxiliary arches (104) and a steel pipe bracket (105) used for supporting the construction of the main arches (103) and the auxiliary arches (104),
the safe operation platform system comprises an overhanging beam operation platform (201), a main arch operation platform (202), an auxiliary arch operation platform (203) and a steel pipe support operation platform (204); the cantilever beam operation platform (201) is fixedly connected with the cantilever beam (102), the main arch operation platform (202) is fixedly connected with the main arch (103) and the steel pipe bracket (105), the auxiliary arch operation platform (203) is fixedly connected with the auxiliary arch (104) and the steel pipe bracket (105), and the steel pipe bracket operation platform (204) is fixedly connected with the steel pipe bracket (105);
the main arch operating platform (202) comprises a large-angle inclined operating platform (2021) and a small-angle arch rib operating platform (2022):
the large-angle inclined operating platform (2021) comprises a first pedal (4), a second pedal (5), a bracket inclined strut (6), a first ladder stand (7) and a first protective guard (9); the first pedal (4) and the second pedal (5) are respectively positioned at two sides of the main arch (103), and the bottom surfaces of the middle parts of the first pedal (4) and the second pedal (5) are connected with the top of the steel pipe bracket (105); the bottom surfaces of two sides of the first pedal (4) are also connected with a main arch (103) through a bracket inclined strut (6); two ends of the first ladder stand (7) are respectively connected with the first pedal (4) and the second pedal (5); a first protective guard (9) is further fixed on the edges of the first pedal (4) and the second pedal (5);
small-angle arch rib operation platform (2022) are including saddle formula operation platform (11), saddle formula operation platform (11) left and right sides all are fixed with main arch (103) with the top, set firmly rectangle guard ring (12) that a plurality of intervals set up on the both sides of saddle formula operation platform (11), and rectangle guard ring (12) the top of top still is connected with saddle formula operation platform (11) through connecting rod (13).
2. The safety operation platform system for the double-flying-wing arch bridge construction process according to claim 1, wherein the overhanging beam operation platform (201) comprises a vertical protection cage (1), a third ladder (2) and a third pedal (3); the third pedal (3) is parallel to and fixedly connected with the inclined bottom plate of the extending beam (102); the upper end of the vertical protection cage (1) is connected with a platform main body bearing structure of the extending beam (102), and the lower end of the vertical protection cage is fixedly connected with the outer side of one end of the third pedal (3); the third ladder stand (2) is arranged in the vertical protection cage (1), the upper end of the third ladder stand (2) is connected with a platform main body bearing structure of the extending beam (102), and the lower end of the third ladder stand is fixedly connected with one end of the third pedal (3).
3. A safety operation platform system for use in a double flying wing arch bridge construction process according to claim 2, wherein the secondary arch operation platform (203) comprises:
the bottom welding platform (2031) is positioned below the auxiliary arch (104) and extends along the transverse direction of the bridge, and the bottom welding platform (2031) is used for being fixedly connected with the steel pipe bracket (105) for assembling the auxiliary arch (104);
the steel pipe frame comprises two pairs of mounting platforms (2032), wherein the two pairs of mounting platforms (2032) are arranged at intervals along the length direction of an auxiliary arch (104), the two pairs of mounting platforms (2032) are respectively positioned at two opposite sides of a bottom welding platform (2031), each pair of mounting platforms (2032) is positioned above the bottom welding platform (2031), each mounting platform (2032) is connected with the bottom welding platform (2031) through a fourth ladder (22), and each pair of mounting platforms (2032) is respectively used for being connected with a steel pipe frame (400) for assembling the auxiliary arch (104); and
two top welded platform (2033), two top welded platform (2033) all are located the top of vice arch (104), are used for being connected with first side (210) and second side (220) of vice arch (104) respectively, and two top welded platform (2033) slope sets up, and top welded platform (2033) are connected with bottom welded platform (2031) through fifth cat ladder (23).
4. The safety operation platform system for the double-flying-wing arch bridge construction process according to claim 3, wherein the steel pipe support operation platform (204) comprises a plurality of fourth foot pedals (16) arranged at intervals, and four corners of each fourth foot pedal (16) are welded and fixed with the steel pipe support (105); two adjacent fourth foot boards (16) are connected through a sixth ladder (20); a second pattern plate (17) is paved on the bottom surface of the fourth pedal plate (16); a second protective guard (18) and a foot blocking plate (19) are arranged at the edge of the fourth pedal (16), the second protective guard (18) is located on the outer side of the foot blocking plate (19), and the height of the second protective guard (18) is larger than that of the foot blocking plate (19).
5. A safety operation platform system for double-flying-wing arch bridge construction process according to claim 3, wherein a second ladder stand (14) is arranged in the rectangular protective ring (12); the upper end of the second ladder stand (14) is connected with the top of a main arch (103) positioned in the saddle type operating platform (11), the lower end of the second ladder stand is fixedly connected with a top platform on the steel pipe support (105), the distance between the step plates (15) on the second ladder stand (14) is 30cm, and the step plates (15) are made of angle steel.
6. The system as claimed in claim 1, wherein a second handrail (21) is welded on the sixth ladder (20), and the second handrail (21) is made of angle steel.
7. The safe operation platform system for the double-flying-wing arch bridge construction process according to claim 6, wherein the first pedal (4), the second pedal (5), the third pedal (3) and the fourth pedal (16) are all made of steel plates.
8. The safety operation platform system for the double-flying-wing arch bridge construction process according to claim 1, wherein the top operation area of the saddle type operation platform (11) is provided with one anti-skid strip every 1 m.
9. The safe operation platform system for the double-flying-wing arch bridge construction process according to claim 1, wherein the bottom surfaces of the first pedal (4) and the second pedal (5) are provided with anti-slip strips welded by angle steel every 30 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110238586.5A CN112921819A (en) | 2021-03-04 | 2021-03-04 | Safe operation platform system used in construction process of double-flying-wing arch bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110238586.5A CN112921819A (en) | 2021-03-04 | 2021-03-04 | Safe operation platform system used in construction process of double-flying-wing arch bridge |
Publications (1)
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Application publication date: 20210608 |