Bridge single-column pier capping beam construction supporting platform

Abstract

The utility model belongs to the technical field of bridge construction, and relates to a bridge single-column pier capping beam construction supporting platform which comprises a single-column pier, hoops, main cross beams, distribution beams, a bottom formwork, side formworks and inclined struts, the hoops are installed on the single-column pier, the two parallel main cross beams are supported above the hoops, the main cross beams are connected through opposite-pull screws, and the distribution beams are connected with the bottom formwork through the opposite-pull screws. A distribution beam is erected on the main cross beam, a bottom formwork is laid on the distribution beam, a side formwork is arranged on the bottom formwork, the sand box is arranged between the hoop and the main cross beam, the connecting screw is installed on the single-column pier below the hoop in a penetrating mode, the main cross beam is connected with the connecting screw through an inclined strut, and the main cross beam is connected with the connecting screw through the inclined strut. The inclined strut is of a structure with the telescopic length. According to the bridge single-column pier capping beam construction supporting platform, the elevation of the bottom of the capping beam can be accurately adjusted through the height of the sand box, meanwhile, the purpose of adjusting the cross slope of the main cross beam can be achieved by adjusting the length of the inclined struts, and therefore the purpose of adjusting the cross slope of the capping beam is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction and relates to a supporting platform, in particular to a supporting platform for the construction of a single-column pier cap beam of a bridge. Background Art

[0002] When constructing bridges in areas with restricted conditions such as mountainous areas and water, the cap beam construction of single-column piers cannot be carried out as on land by setting up scaffolding or using steel pipe single-column piers.

[0003] CN218373368U discloses a hoop support system for the construction of a single-column cap beam, including a cylindrical pier, on which an upper hoop and a lower hoop are arranged up and down, and two parallel main beams are supported on the upper hoop, the main beams are connected by a tension beam, and the tension beam is connected to the upper hoop, the main beam and the lower hoop are connected by a diagonal brace beam, and a distribution beam frame is erected on the main beam, and a template is laid on the distribution beam frame. The arrangement of the diagonal brace beam greatly improves the stability of the structure, and the diagonal brace beam is integrally formed, and has stronger anti-bending performance; this scheme can provide better support for the main beam by arranging a tension beam between the main beams, and the tension beam is connected to the upper hoop, and can further improve the anti-torsion and anti-overturning capabilities of the support system, making the structure more stable and safer; and solves the problem of unstable support and easy overturning in the prior art.

[0004] For curved bridges such as ramp bridges, the bridge deck is super-elevated. When constructing the cap beam, it needs to be designed as a structure with a low inside and a high outside. However, the above-mentioned public documents can only be used for the construction of horizontal cap beams, and the angle of the support platform for cap beam construction cannot be adjusted according to needs. Moreover, the tension beam is directly connected to the upper hoop, and the bottom elevation of the cap beam cannot be adjusted, and cannot be adjusted according to construction needs. Summary of the invention

[0005] The utility model aims to provide a bridge single-column pier cap beam construction support platform which has a scientific and reasonable structural design, is convenient to construct, has adjustable cap beam bottom elevation and main beam cross slope, and is easy to implement.

[0006] The utility model solves the technical problem through the following technical solutions:

[0007] A support platform for the construction of a bridge single-column pier cap beam comprises a single-column pier, a hoop, a main beam, a distribution beam, a bottom formwork, a side formwork and a diagonal brace, wherein a hoop is installed on the single-column pier, two parallel main beams are supported above the hoop, the main beams are connected by tension screws, a distribution beam is erected on the main beam, a bottom formwork is laid on the distribution beam, and a side formwork is arranged on the bottom formwork, and the platform is characterized in that it also comprises a connecting screw and a sand box, a sand box is arranged between the hoop and the main beam, a connecting screw is installed on the single-column pier below the hoop, the main beam and the connecting screw are connected by a diagonal brace, and the diagonal brace is a structure with retractable length.

[0008] Moreover, the diagonal brace includes an ear plate, an outer sleeve and an inner screw. The inner screws are threadedly installed at both ends of the outer sleeve, and the ear plates are hinged at both ends of the two inner screws. The ear plate at one end is fixed to the bottom of the main beam, and the ear plate at the other end is mounted on the connecting screw through the connecting hole thereon. The ear plate and the connecting screw are fixed by a nut.

[0009] Moreover, the clamp comprises a clamp band, a bolt connection plate and a support plate. The two arc-shaped clamp bands are connected by bolts at the bolt connection plates at both ends. Support plates are arranged on the end faces of the two clamp bands, and the sand box is installed on the support plate.

[0010] The advantages and beneficial effects of the utility model are:

[0011] The construction support platform of the cap beam of the single-column pier of this bridge can accurately adjust the elevation of the bottom of the cap beam by adjusting the height of the sand box, and at the same time, by adjusting the length of the diagonal brace, the purpose of adjusting the transverse slope of the main beam can be achieved, thereby achieving the purpose of adjusting the transverse slope of the cap beam. After the concrete strength of the cap beam reaches the design strength, the height of the sand box and the length of the diagonal brace are adjusted synchronously, so as to separate the cap beam construction support platform from the bottom of the cap beam, and achieve the purpose of quickly and safely removing the bottom formwork of the cap beam and the construction support platform of the cap beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a side view of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the diagonal brace of the utility model;

[0015] Figure 4 It is a top view of the clamp of the utility model;

[0016] Figure 5 This is the front view of the clamp of the utility model;

[0017] Figure 6 It is a structural schematic diagram of the sand box of the utility model.

[0018] Reference numerals

[0019] 1- single column pier, 2- cap beam, 3- connecting screw, 4- diagonal brace, 5- hoop, 6- main beam, 7- distribution beam, 8- side formwork, 9- sand box, 10- tension screw, 11- bottom formwork, 12- ear plate, 13- pin shaft, 14- inner screw, 15- outer sleeve, 16- supporting plate, 17- bolt connecting plate, 18- connecting hole, 19- sand. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely descriptive and not restrictive, and the protection scope of the present invention cannot be limited by them.

[0021] A support platform for the construction of a bridge single-column pier cap beam comprises a single-column pier 1, a hoop 5, a main beam 6, a distribution beam 7, a bottom formwork 11, a side formwork 8 and a diagonal brace 4, wherein a hoop is installed on the single-column pier, two parallel main beams are supported above the hoop, the main beams are connected by a tension screw 10, an I-shaped distribution beam is erected on the main beam, a bottom formwork is laid on the distribution beam, and a side formwork is arranged on the bottom formwork, and the innovation thereof lies in that it also comprises a connecting screw 3 and a sand box 9, a sand box is arranged between the hoop and the main beam, a connecting screw is installed on the single-column pier below the hoop, the main beam and the connecting screw are connected by a diagonal brace, and the diagonal brace is a structure with a retractable length.

[0022] The diagonal brace includes an ear plate 12, an outer sleeve 15 and an inner screw 14. The inner screws are threadedly installed at both ends of the outer sleeve. The two ends of the two inner screws are hinged with ear plates through pins 13. The ear plate at one end is fixed to the bottom of the main beam, and the ear plate at the other end is mounted on the connecting screw through the connecting hole 18 thereon. The ear plate and the connecting screw are fixed by a nut.

[0023] The hoop is divided into two structures, left and right, each including a hoop, a bolt connection plate 17 and a support plate 16. The hoop is made of 16mm steel plate by rolling. The two arc-shaped hoop are connected by 32 M30 high-strength bolts to connect the bolt connection plates at both ends. The support plate is welded on the end surface of the two hoop, and the sand box is installed on the support plate. The diameter of the hoop is consistent with the diameter of the bridge single column pier.

[0024] Installation of cap beam construction support platform:

[0025] Before pouring concrete for the bridge's single-column pier, holes for inserting the connecting screws are formed at the corresponding positions of the connecting screws on the upper part of the single-column pier by pre-buried PCV pipes.

[0026] When installing the support platform for the cap beam construction, first insert the connecting screw into the hole reserved on the upper part of the single-column pier of the bridge, install the upper clamp at the predetermined position on the top of the single-column pier, and after the clamp is tightened, install the sand box on it, and adjust the height of the sand box to the predetermined height to achieve the purpose of accurately adjusting the bottom elevation of the cap beam; lay the main beam on the sand box, and after the main beam is hoisted into place, install the diagonal brace, the upper part of the diagonal brace is connected to the upper beam, and the lower part is connected to the connecting screw, and the outer sleeve of the diagonal brace is adjusted by twisting to adjust the anchoring length of the inner screw in the outer sleeve, thereby adjusting the length of the diagonal brace, and the purpose of adjusting the cross slope of the main beam is achieved by adjusting the length of the diagonal brace.

[0027] After the two sets of main beams on both sides of the bridge single-column pier are installed, the main beams are tightened and fixed by four M20 screws. The distribution beam is laid on the main beam, the bottom formwork of the cap beam is laid on the distribution beam, and the steel bars of the cap beam are tied on the bottom formwork. After the steel bars are tied, the side formwork of the cap beam is installed, and finally the cap beam concrete is poured.

[0028] Dismantling of the support platform for cap beam construction:

[0029] After the concrete strength of the cap beam 2 reaches the conditions for demolding, the side formwork of the cap beam is removed first. Then, by simultaneously releasing the sand 19 in the sand box supporting the main crossbeam and adjusting the length of the diagonal brace, the cap beam support platform and the cap beam bottom formwork can be separated from the bottom surface of the cap beam concrete without the need for large equipment. Then, the bottom formwork, distribution beam, main crossbeam, and hoop can be removed in turn.

[0030] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A bridge single-column pier cap beam construction support platform, comprising a single-column pier, a hoop, a main beam, a distribution beam, a bottom template, a side template and a diagonal brace, wherein a hoop is installed on the single-column pier, two parallel main beams are supported above the hoop, the main beams are connected by tension screws, a distribution beam is laid on the main beam, a bottom template is laid on the distribution beam, and a side template is arranged on the bottom template, characterized in that: It also includes a connecting screw and a sand box. A sand box is arranged between the hoop and the main beam. A connecting screw is installed on the single column pier below the hoop. The main beam and the connecting screw are connected by a diagonal brace, and the diagonal brace is a retractable structure.

2. A bridge single-column pier cap beam construction support platform according to claim 1, characterized in that: The diagonal brace includes an ear plate, an outer sleeve and an inner screw. The inner screws are threadedly installed at both ends of the outer sleeve. The ear plates are hinged at both ends of the two inner screws. The ear plate at one end is fixed to the bottom of the main beam, and the ear plate at the other end is mounted on the connecting screw through the connecting hole thereon. The ear plate and the connecting screw are fixed by a nut.

3. The construction support platform for a single-column pier cap beam of a bridge according to claim 1, characterized in that: The hoop comprises a hoop band, a bolt connection plate and a supporting plate. Two arc-shaped hoop bands are connected by bolts at the bolt connection plates at both ends. Supporting plates are arranged on the end faces of the two hoop bands, and the sand box is installed on the supporting plate.

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