CN214695213U

CN214695213U - Arch ring formwork system of porous arch bridge

Info

Publication number: CN214695213U
Application number: CN202121060629.7U
Authority: CN
Inventors: 杨师勤; 王华平; 胡眺; 丁伟; 梁志锋; 黄绍校
Original assignee: Guangxi Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
Current assignee: Guangxi Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2021-11-12
Anticipated expiration: 2031-05-18

Abstract

The utility model discloses an arch ring formwork system of a porous arch bridge, which comprises a steel pipe supporting system (1), a section steel supporting system (2), a first foundation (3), a second foundation (4), a third foundation (5), a supporting component (6) and an arch ring formwork (7); the plurality of second foundations are arranged on the third foundation, and the two first foundations are arranged at two ends of the third foundation; the bottom of the steel pipe supporting system is arranged on a third foundation, the bottom of the profile steel supporting system is arranged on a plurality of second foundations, and the tops of the steel pipe supporting system and the profile steel supporting system are both arc-shaped structures with high middles and low two sides; the supporting assemblies are arranged at the top of the section steel supporting system, the arch ring template is supported on the steel pipe supporting system and the section steel supporting system through the supporting assemblies, and two ends of the arch ring template are arranged on the two first foundations. The utility model discloses can adopt shaped steel to support and the steel pipe supports to set up in step and constitutes the support system, improve the steadiness of supporting the system, reduce the construction potential safety hazard.

Description

Arch ring formwork system of porous arch bridge

Technical Field

The utility model relates to a construction technical field especially relates to a porous arched bridge's arch ring formwork system.

Background

The bridge is a building structure erected on rivers, lakes and seas, and the arch bridge is one of the bridges in the building form. The main stressed member of the arch bridge is an arch ring, the shape of the arch bridge is an arch form, the arch ring is used for supporting the whole bridge deck system, the arch bridge is divided into a single-hole arch bridge and a multi-hole arch bridge according to the design size of the arch bridge, and the multi-hole arch bridge is an arch bridge comprising a plurality of arch rings. In the construction of the multi-arch ring formwork in the prior art, the arch ring formwork is supported by adopting a mode of erecting steel pipes, so that the construction efficiency is lower, the construction quality is poorer, the stress of different positions of a supporting system is uneven due to the arc-shaped structure of the arch ring and different lengths of the steel pipes in the steel pipe supporting system, the stability and the reliability of the steel pipe supporting system are poorer, and the problem of uneven ground settlement can be caused.

Disclosure of Invention

An object of the utility model is to provide a porous arched bridge's arch ring formwork system can adopt shaped steel to support and the steel pipe supports to set up in step and constitutes the support system, has improved the steadiness of supporting the system, has reduced the construction potential safety hazard.

The utility model discloses a realize like this:

an arch ring formwork system of a porous arch bridge is characterized in that: the steel pipe supporting system comprises a steel pipe supporting system, a profile steel supporting system, a first foundation, a second foundation, a third foundation, a supporting assembly and an arch ring template; the second bases are arranged on the third base at intervals, and the two first bases are arranged at two ends of the third base respectively; the bottom of the steel pipe supporting system is supported on a third foundation, the bottom of the section steel supporting system is fixedly arranged on a plurality of second foundations, and the tops of the steel pipe supporting system and the section steel supporting system are both arc-shaped structures with high middles and low two sides; the supporting assemblies are arranged at the top of the section steel supporting system at intervals respectively, the arch ring template is supported on the steel pipe supporting system and the section steel supporting system through the supporting assemblies, and two ends of the arch ring template are supported on the two first foundations respectively, so that the arch ring template can arch between the two first foundations.

The steel pipe support system comprises transverse horizontal rods, longitudinal horizontal rods, vertical rods and inclined rods, wherein the transverse horizontal rods, the longitudinal horizontal rods and the vertical rods are vertically arranged in pairs, so that a plurality of transverse horizontal rods, a plurality of longitudinal horizontal rods and a plurality of vertical rods are erected into a three-dimensional net-shaped steel pipe support system; and the plurality of inclined rods are obliquely arranged on the steel pipe supporting system and are respectively intersected and fixed with the transverse horizontal rods, the longitudinal horizontal rods and the vertical rods to form a cross bracing structure.

The section steel supporting system comprises a section steel upright post and a section steel top bracing cross beam; the lower extreme of a plurality of shaped steel stands is installed on the second basis through first fixed subassembly interval respectively, and shaped steel shore beam passes through second fixed subassembly fixed mounting in the upper end of a plurality of shaped steel stands, and shaped steel shore beam level sets up, and a plurality of supporting component intervals of group set up on shaped steel shore beam.

Each second basis on be equipped with two at least shaped steel stands, two at least shaped steel stands are arranged along the length direction interval of second basis.

Two adjacent shaped steel stand between be connected with the shaped steel crossbeam, be located shaped steel stand and the first basis of shaped steel braced system outer end between be connected with the shaped steel crossbeam.

The first fixing assembly comprises a pre-buried rod and a first reinforcing plate; the one end of embedded pole is pre-buried in the second basis, and the other end of embedded pole extends to the second basis top and runs through the lower end plate of shaped steel stand, and the outer screw thread locking that the lower end plate of shaped steel stand passes through the other end of embedded pole is on the second basis, and a plurality of first reinforcing plates are connected between the lower end plate of shaped steel stand and second basis.

The second fixing assembly comprises a connecting plate and a second reinforcing plate, the connecting plate is fixedly installed at the upper end of the profile steel stand column through a plurality of second reinforcing plates and is locked, and a bottom wing plate of the profile steel top bracing cross beam is fixedly installed on the connecting plate through welding.

The support assembly comprises an angle support and a mounting support; the angle supporting piece is of an L-shaped structure, the horizontal section of the angle supporting piece is fixedly arranged on a top wing plate of the profile steel top supporting beam, and the angle supporting piece is positioned on one side of the profile steel top supporting beam; the installation support piece is arranged on the other side of the profile steel top supporting beam and the vertical section of the angle support piece, the installation support piece is obliquely erected on the profile steel top supporting beam through the angle support piece, the oblique direction of the installation support piece is consistent with the arc direction of the arch ring template, and the arch ring template can be erected on the installation support piece.

The arch ring template comprises arc-shaped angle steel, square wood, a template, a steel plate and reinforcing angle steel; the arc-shaped angle steel is of an arc-shaped structure, and one surface of the arc-shaped angle steel is fixedly attached to the mounting and supporting piece of the supporting component; the two sides of the square timbers are respectively installed on the arc-shaped angle steel through reinforcing angle steel intervals, the templates are installed on the square timbers, and the steel plates are installed on the templates.

Compared with the prior art, the utility model, following beneficial effect has:

1. the utility model discloses owing to adopted shaped steel to support and the support system that the steel pipe supported the constitution, shaped steel supports and sets up in step with the steel pipe support, has strengthened the steadiness of supporting the system, adopts the fixed mode that crab-bolt and spot welding are connected, easy dismounting, and easily operation has improved the formwork efficiency and the quality of arch ring, has reduced the construction potential safety hazard.

2. The utility model discloses owing to adopted the concrete foundation, the bearing capacity is strong, and the bar-shaped structure is adopted on the second basis, can provide effective support to the installation fulcrum of arch ring template, and the atress is even, can not cause the local inhomogeneous phenomenon of subsiding.

3. The utility model discloses owing to adopt the angle steel to consolidate the other side wood both sides, prevent that the square timber from taking place the displacement on the arc angle steel of arch curved surface, reduce the amount of deflection that concrete placement in-process produced to the face to guarantee the quality of pouring of concrete.

4. The utility model discloses owing to be equipped with various steel sheet on the template, various steel sheet can regard as the contact surface of pouring with the concrete, and various steel sheet surfacing is smooth, and the concatenation seam can neglect, and concrete surface after pouring the shaping looks effectual.

Drawings

FIG. 1 is a construction elevation of an arch ring formwork system of the multi-hole arch bridge of the present invention;

FIG. 2 is a schematic structural view of a steel pipe supporting system and a profile steel supporting system in an arch ring formwork supporting system of the multi-hole arch bridge of the present invention;

FIG. 3 is a schematic view of a lower end connection node of a medium-sized steel upright post in an arch ring formwork system of the multi-hole arch bridge of the present invention;

FIG. 4 is a schematic view of a connecting node between a medium-sized steel upright post and a profile steel cross beam in an arch ring formwork system of the multi-hole arch bridge of the present invention;

FIG. 5 is an enlarged view of the connection node between the supporting component and the arch ring template in the arch ring formwork system of the multi-hole arch bridge of the present invention;

fig. 6 is a side sectional view of the supporting component and the arch ring template in the arch ring formwork system of the multi-hole arch bridge of the present invention.

In the figure, a steel pipe supporting system is 1, a transverse horizontal rod is 11, a longitudinal horizontal rod is 12, an upright rod is 13, an inclined rod is 14, a steel supporting system is 2, a steel beam is 21, a steel upright is 22, a steel top supporting beam is 23, a first foundation is 3, a second foundation is 4, a third foundation is 5, a supporting component is 6, an angle supporting component is 61, an installation supporting component is 62, a 7 arch ring template is 7, arc-shaped angle steel, square wood is 72, a template is 73, a steel plate is 74, reinforcing angle steel is 75, an embedded rod is 82, a first reinforcing plate is 83, a connecting plate is 91, and a second reinforcing plate is 92.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments.

Referring to fig. 1, an arch ring formwork system of a porous arch bridge comprises a steel pipe supporting system 1, a section steel supporting system 2, a first foundation 3, a second foundation 4, a third foundation 5, a supporting component 6 and an arch ring formwork 7; the strip-shaped second bases 4 are respectively arranged on the third base 5 at intervals, and the two first bases 3 are respectively arranged at two ends of the third base 5; the bottom of the steel pipe supporting system 1 is supported on a third foundation 5, the bottom of the section steel supporting system 2 is fixedly arranged on a plurality of second foundations 4, and the tops of the steel pipe supporting system 1 and the section steel supporting system 2 are both arc-shaped structures with high middles and low two sides; a plurality of groups of supporting components 6 are arranged at the top of the section steel supporting system 2 at intervals respectively, the arch ring template 7 is erected on the steel pipe supporting system 1 and the section steel supporting system 2 through the plurality of groups of supporting components 6, and two ends of the arch ring template 7 are erected on the two first foundations 3 respectively, so that the arch ring template 7 can arch between the two first foundations 3.

Referring to fig. 2, the steel pipe support system 1 includes a horizontal rod 11, a longitudinal horizontal rod 12, an upright rod 13 and an inclined rod 14, the horizontal rod 11, the longitudinal horizontal rod 12 and the upright rod 13 are vertically arranged in pairs, so that a plurality of horizontal rods 11, a plurality of longitudinal horizontal rods 12 and a plurality of upright rods 13 are erected to form a steel pipe support system 1 in a solid net shape; a plurality of inclined rods 14 are obliquely arranged on the steel pipe supporting system 1 and are respectively intersected and fixed with the transverse horizontal rods 11, the longitudinal horizontal rods 12 and the vertical rods 13 to form a cross bracing structure. The transverse horizontal rods 11, the longitudinal horizontal rods 12, the vertical rods 13 and the diagonal rods 14 can be made of steel pipes with the diameter of 48 x 3 mm.

The section steel supporting system 2 comprises a section steel upright column 22 and a section steel top supporting beam 23; the lower extreme of a plurality of shaped steel stands 22 is installed on second basis 4 through first fixed subassembly interval respectively, and shaped steel shoring crossbeam 23 passes through second fixed subassembly fixed mounting in the upper end of a plurality of shaped steel stands 22, and shaped steel shoring crossbeam 23 level sets up, and 6 intervals of a plurality of supporting component of group set up on shaped steel shoring crossbeam 23. The steel section upright posts 22 can be made of 200X 8X 12mm H-shaped steel, and the steel section top bracing cross beams 23 can be made of 200X 8X 12mm H-shaped steel.

Every second basis 4 on be equipped with two at least shaped steel stands 22, at least two shaped steel stands 22 are arranged along the length direction interval of second basis 4, ensure effective, the stable support to shaped steel shore beam 23, the atress is even, avoids local settlement uneven phenomenon to take place.

Referring to fig. 4, two adjacent steel columns 22 are connected with a steel beam 21 through angle steel and M20 high-strength bolts, and the steel column 22 at the outer end of the steel support system 2 and the first foundation 3 are connected with the steel beam 21 through angle steel 75 × 5mm and M20 high-strength bolts. Preferably, the width of the wing plate of the steel beam 21 is smaller than the width of the web plate of the steel column 22, so that the end of the steel beam 21 can be connected to the web plate of the steel column 22 and fixed by angle steel and high-strength bolts, and the reliability of the connection node is ensured. The steel beam 21 can be made of 200 × 150 × 6 × 9mm H-section steel.

Referring to fig. 3, the first fixing assembly includes a pre-buried rod 82 and a first reinforcing plate 83; one end of the embedded rod 82 is embedded in the second foundation 4, the other end of the embedded rod 82 extends to the upper side of the second foundation 4 and penetrates through the lower end plate of the section steel upright post 22, the lower end plate of the section steel upright post 22 is locked on the second foundation 4 through the M20 high-strength bolt and the backing plate through the external threads of the other end of the embedded rod 82, and the first reinforcing plates 83 are connected between the lower end plate of the section steel upright post 22 and the second foundation 4. The embedded rod 82 can be made of 480mm long L-shaped steel bars, and the end part of the embedded rod 82 is 80mm long, so that the M20 high-strength bolt can be conveniently matched and screwed. The first reinforcing plate 83 may be made of a steel plate of 100 × 8 mm.

Referring to fig. 5, the second fixing assembly includes a connecting plate 91 and a second reinforcing plate 92, the connecting plate 91 is fixedly mounted at the upper end of the section steel upright 22 through a plurality of second reinforcing plates 92 and is locked by high-strength bolts, and the bottom wing plate of the section steel supporting beam 23 is fixedly mounted on the connecting plate 91 through welding. The connecting plate 91 may be made of a steel plate of 400 × 10mm, and the second reinforcing plate 92 may be made of a steel plate of 100 × 8 mm.

Referring to fig. 5 and 6, the support assembly 6 includes an angle support 61 and a mounting support 62; the angle support piece 61 is of an L-shaped structure, the horizontal section of the angle support piece 61 is fixedly installed on a top wing plate of the section steel supporting beam 23 through welding, and the angle support piece 61 is positioned on one side of the section steel supporting beam 23; the installation supporting piece 62 is arranged on the other side of the section steel top bracing beam 23 and the vertical section of the angle supporting piece 61, so that the installation supporting piece 62 is obliquely erected on the section steel top bracing beam 23 through the angle supporting piece 61, the oblique direction of the installation supporting piece 62 is consistent with the arc direction of the arch ring template 7, and the arch ring template 7 can be erected on the installation supporting piece 62. Angle support 61 can adopt the angle steel of 125 x 80 x 8mm that length is 200mm, through angle support 61 position control and angle support 61 vertical section and the angle conversion of horizontal segment on shaped steel shore beam 23, enable angle support 61 for installation support 62 provides the fulcrum of co-altitude to adjust installation support 62's inclination, make installation support 62's inclination can match the radian of arch ring template 7, and then make stable the establishing on installation support 62 of arch ring template 7. The mounting support 62 may be formed from # 18 h-section steel having a length of 400 mm.

Referring to fig. 5 and 6, the arch ring formwork 7 includes arc angle steel 71, square timber 72, formwork 73, steel plate 74 and reinforcing angle steel 75; the arc-shaped angle steel 71 is of an arc-shaped structure, and one surface of the arc-shaped angle steel 71 is fixedly attached to the mounting and supporting piece 62 of the supporting component 6 through welding; the two sides of the square timbers 72 are respectively installed on the arc-shaped angle iron 71 through reinforcing angle irons 75 at intervals, the templates 73 are installed on the square timbers 72, and the steel plates 74 are installed on the templates 73. The arc-shaped angle steel 71 is supported by the angle steel 125-80-8, and the arc-shaped angle steel 71 is bent into an arc shape to meet the requirement of arching radian. The size of the square timber 72 is 50 x 100, the template 73 is a 18mm thick template, and the steel plate 74 is a 0.2mm thick color steel plate.

Preferably, the third foundation 5 is cast by using C20 concrete, the thickness of the third foundation 5 is 200mm, and the area of the third foundation 5 is determined by the design size of the arch bridge. Second foundation 4 may be cast of C30 concrete, and second foundation 4 has dimensions of 500 x 4000 mm. The first foundation 3 can be formed by pouring C30 concrete, and the height of the first foundation 3 is determined by the supporting height of the two ends of the arch ring formwork 7. The arching height of the arch ring formwork 7 is determined by the design size.

The utility model discloses a construction process flow is:

positioning elastic lines → construction of a first foundation 3, a second foundation 4 and a third foundation 5 → bridge arch model establishment → positioning of the vertical rods 13 → installation of the steel section upright posts 22 → synchronous erection of the steel pipe supporting system 1 and the steel section supporting system 2 in a matching manner → connection of the steel section cross beams 21 and the steel section top supporting cross beams 23 with the steel section upright posts 22 → installation of the supporting components 6 → preloading → arch ring formwork 7, arch bridge reinforcing steel bar binding, arch bridge formwork assembling and reinforcing → concrete pouring and maintenance.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, therefore, any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. An arch ring formwork system of a porous arch bridge is characterized in that: the steel pipe supporting system comprises a steel pipe supporting system (1), a section steel supporting system (2), a first foundation (3), a second foundation (4), a third foundation (5), a supporting component (6) and an arch ring template (7); the strip-shaped second bases (4) are respectively arranged on the third base (5) at intervals, and the two first bases (3) are respectively arranged at two ends of the third base (5); the bottom of the steel pipe supporting system (1) is supported on the third foundation (5), the bottom of the section steel supporting system (2) is fixedly arranged on the second foundations (4), and the tops of the steel pipe supporting system (1) and the section steel supporting system (2) are of arc structures with high middles and low two sides; a plurality of groups of supporting components (6) are arranged at the top of the section steel supporting system (2) at intervals respectively, the arch ring template (7) is erected on the steel pipe supporting system (1) and the section steel supporting system (2) through the plurality of groups of supporting components (6), two ends of the arch ring template (7) are erected on the two first foundations (3) respectively, and the arch ring template (7) can arch between the two first foundations (3).

2. An arch ring formwork system for a cellular arch bridge as set forth in claim 1, wherein: the steel pipe supporting system (1) comprises transverse horizontal rods (11), longitudinal horizontal rods (12), vertical rods (13) and inclined rods (14), wherein the transverse horizontal rods (11), the longitudinal horizontal rods (12) and the vertical rods (13) are arranged vertically in pairs, so that a plurality of transverse horizontal rods (11), a plurality of longitudinal horizontal rods (12) and a plurality of vertical rods (13) are erected to form the steel pipe supporting system (1) in a solid net shape; a plurality of inclined rods (14) are obliquely arranged on the steel pipe supporting system (1) and are respectively intersected and fixed with the transverse horizontal rods (11), the longitudinal horizontal rods (12) and the vertical rods (13) to form a cross bracing structure.

3. An arch ring formwork system for a cellular arch bridge as set forth in claim 1, wherein: the section steel supporting system (2) comprises a section steel upright post (22) and a section steel top bracing cross beam (23); the lower extreme of a plurality of shaped steel stand (22) is installed on second basis (4) through first fixed subassembly interval respectively, and shaped steel shoring crossbeam (23) are through the upper end of second fixed subassembly fixed mounting at a plurality of shaped steel stand (22), and shaped steel shoring crossbeam (23) level sets up, and a plurality of supporting component (6) intervals of group set up on shaped steel shoring crossbeam (23).

4. An arch ring formwork system for a cellular arch bridge as set forth in claim 3, wherein: each second foundation (4) is provided with at least two section steel upright columns (22), and the at least two section steel upright columns (22) are arranged at intervals along the length direction of the second foundation (4).

5. An arch ring formwork system for a cellular arch bridge as set forth in claim 3, wherein: two adjacent shaped steel stand (22) between be connected with shaped steel crossbeam (21), be located shaped steel support system (2) outer end shaped steel stand (22) and be connected with shaped steel crossbeam (21) between first basis (3).

6. An arch ring formwork system for a cellular arch bridge as set forth in claim 3, wherein: the first fixing assembly comprises an embedded rod (82) and a first reinforcing plate (83); the one end of embedded rod (82) is pre-buried in second basis (4), and the other end of embedded rod (82) extends to second basis (4) top and runs through the lower end plate of shaped steel stand (22), and the lower end plate of shaped steel stand (22) passes through the external screw thread locking of the other end of embedded rod (82) on second basis (4), and a plurality of first reinforcing plates (83) are connected between the lower end plate of shaped steel stand (22) and second basis (4).

7. An arch ring formwork system for a cellular arch bridge as set forth in claim 3, wherein: the second fixing assembly comprises a connecting plate (91) and a second reinforcing plate (92), the connecting plate (91) is fixedly installed at the upper end of the section steel upright post (22) through a plurality of second reinforcing plates (92) and locked, and a bottom wing plate of the section steel top bracing cross beam (23) is fixedly installed on the connecting plate (91) through welding.

8. An arch ring formwork system for a cellular arch bridge as set forth in claim 1, wherein: the support assembly (6) comprises an angle support (51) and a mounting support (52); the angle supporting piece (51) is of an L-shaped structure, the horizontal section of the angle supporting piece (51) is fixedly arranged on a top wing plate of the section steel supporting beam (23), and the angle supporting piece (51) is positioned on one side of the section steel supporting beam (23); the installation supporting pieces (52) are arranged on the other side of the section steel top supporting beam (23) and on the vertical section of the angle supporting pieces (51), the installation supporting pieces (52) are obliquely erected on the section steel top supporting beam (23) through the angle supporting pieces (51), the oblique direction of the installation supporting pieces (52) is consistent with the arc direction of the arch ring template (7), and the arch ring template (7) can be erected on the installation supporting pieces (52).

9. An arch ring formwork system for a cellular arch bridge as set forth in claim 1, wherein: the arch ring template (7) comprises arc-shaped angle steel (71), square timber (72), a template (73), a steel plate (74) and reinforcing angle steel (75); the arc-shaped angle steel (71) is of an arc-shaped structure, and one surface of the arc-shaped angle steel (71) is fixedly attached to the mounting and supporting piece (52) of the supporting component (6); the two sides of the square timbers (72) are respectively installed on the arc-shaped angle steel (71) through reinforcing angle steel (75) at intervals, the templates (73) are installed on the square timbers (72), and the steel plates (74) are installed on the templates (73).