CN211596427U - Pier top assembly type triangular bracket - Google Patents

Abstract

A triangular bracket assembled on top of a pier, comprising a bridge pier column, a triangular bracket, a hole-forming pipe, an upper pull rod, a pull-down rod, and a support bearing, and the holed pipe and the support bearing are pre-buried before the bridge pier column concrete is poured. And in advance, connect and assemble the horizontal rod, inclined rod and vertical rod to form a triangular bracket. After the concrete pouring and curing is completed, the upper and lower rods are inserted into the hole-forming pipe, the triangular bracket is hoisted to the upper part of the support and temporarily fixed, and the upper and lower rods are tensioned to anchor the triangular bracket to the side wall of the bridge pier column. , forming a triangular bracket assembled on the top of the pier. By threading the upper and lower rods into the bridge piers as connecting parts, the symmetry and stability of the triangular brackets on both sides of the piers can be ensured, and the support under the triangular brackets can provide vertical support for the triangular brackets. The combination of the two can effectively improve the bearing capacity and stability of the triangular bracket, the structure is easy to operate, the components can be recycled and reused, the bearing capacity and stability are high, and the utility model has broad application prospects.

Description

A pier top assembled triangular bracket

technical field

The utility model belongs to the field of civil engineering and relates to a bridge construction bracket, in particular to a pier top assembled triangular bracket.

Background technique

The bridge bracket is used to support the formwork and bear the construction load when the bridge is poured 0# block. The traditional bracket is embedded with a large steel plate in the pier, and the triangular bracket is assembled and welded under the bridge. The buried steel plate is welded, but the traditional bracket has high-altitude vertical welding during the construction process, the quality of the weld is difficult to guarantee, and there are potential safety hazards, and the welding seam is long, the high-altitude welding workload is large, and the bracket installation period is long. Therefore, it is necessary to study a A safe, convenient, sustainable and efficient bridge bracket.

The current bridge bracket is mainly connected to the bridge pier through connecting pieces. For example, Chinese patent "201721822376.6" discloses a bridge bracket, which includes a mounting steel sleeve with a snap groove, a support plate, a socket ring groove and a matching card The installation steel sleeve is fixed on both sides of the bridge pier through the insertion ring groove and the matching clamp ring, and the support plate is installed on the installation steel sleeve through the clamp groove, which simplifies the installation process and improves the efficiency. However, it is difficult to install on both sides separately. The symmetry of the bracket is ensured, and a raised ring should be set at the pier, which protrudes from the pier body and affects the appearance; another example is the Chinese patent "201822039683.8" which discloses a bridge construction support bracket, including a first tie rod, a second tie rod, and a third tie rod. Three tie rods and two support units, this structure does not need to pre-embed steel plates in the piers, does not damage the quality of the bridge piers, and has high bearing capacity. However, many components bring inconvenience to the installation, and the ground support units are installed in special conditions such as mud and water. It cannot be used in this case, and there are limitations; another example is the Chinese patent "201520263654.3" which discloses a bridge bracket structure, including lateral support rods, inclined rods, support sleeves, and fixing holes. This structure does not require embedded parts, only need to be in The upper end of the bridge pier is fastened with the steel sleeve on the bridge pier, and then the bracket is welded on the bracket, which reduces the supporting strength and load of the bridge bracket. However, each bridge pier needs to be drilled with a large number of fixing holes, which is dangerous and difficult to operate at high altitudes. It is difficult to promote on a large scale.

In summary, the existing bridge pier bracket structures or application scenarios are limited, or require high-altitude operations, which are dangerous and difficult, or time-consuming and labor-intensive. Therefore, it is necessary to research and develop a bridge bracket structure that is easy to install and operate, safe and efficient.

SUMMARY OF THE INVENTION

The purpose of this utility model is to provide a pier top-assembled triangular bracket, which includes bridge piers, triangular brackets, perforated pipes, upper tie rods, lower tie rods, and supports, which are pre-buried before the bridge pier column concrete is poured. Hole pipes and supports, and connect and assemble horizontal rods, inclined rods and vertical rods in advance to form triangular brackets; after the concrete pouring and curing is completed, insert the upper and lower rods into the perforated pipes, and hoist the triangular brackets to the The upper part is supported and temporarily fixed, and the upper and lower rods are tensioned to anchor the triangular bracket on the side wall of the bridge pier column to form a triangular bracket assembled on the top of the pier; The symmetry and stability of the forces on the triangular brackets on both sides of the pier column balance the forces on the triangular brackets on both sides, and the support under the triangular brackets can provide vertical support for the triangular brackets. The combination of the two can effectively improve the bearing capacity and stability of the triangular bracket. The structure is easy to operate, and the components can be recycled and reused repeatedly. The bearing capacity and stability are high, and it has broad application prospects.

The technical route of the utility model: before the concrete of the bridge piers is poured, at the corresponding positions of the horizontal upper and lower rods of the bridge piers and the horizontal direction of the bridge, the pipelines are pre-buried horizontally and along the direction of the bridge. The two side walls of the bridge pier column are symmetrically pre-buried on the two side walls in the direction of the bridge. The bridge pier column concrete is poured and maintained to the specified strength according to the specifications. Or assemble the processed horizontal rods, inclined rods, and vertical rods into several sets of triangular brackets on site, insert the upper and lower rods into the holed pipes of the bridge piers, and hoist the triangular brackets to the upper part of the support. , Support the lower part of the vertical rod of the triangular bracket on the upper part of the support, connect and fix the vertical rod and the support through welding and anchor bolt connection, and stretch the upper rod symmetrically on both sides. The triangle brackets on both sides are connected by anchor bolts, and the lower rods are tensioned symmetrically on both sides. After the tension is completed, the lower brackets are connected with the triangle brackets on both sides through anchor bolts, and the connection between the triangle brackets on both sides is symmetrical at the same time. conduct. After a plurality of pairs of triangular brackets are connected and fixed on the side walls of the bridge pier columns according to the above steps, a pier top assembled triangular bracket is formed.

A triangular bracket assembled on the top of a pier, including bridge pier columns, triangular brackets, hole-forming pipes, upper rods, lower rods, and supports. Or assembled and assembled on site to form a right-angled triangular frame, symmetrically pre-embedded on the two side walls of the bridge pier column in the direction of the bridge, and the bottom end of the vertical rod of the triangular bracket after the overall assembly is fixed and supported on the support bearing. Support, a plurality of hole-forming pipes are arranged horizontally in the bridge pier column to form a plurality of horizontal channels, and the axis of the hole-forming pipe is along the bridge direction, and the upper and lower rods respectively pass through the hole-forming pipes in the bridge pier column. The upper and lower parts of the vertical rods of the triangular brackets on both sides of the bridge piers in the direction of the bridge are symmetrically anchored in the horizontal tunnels inside, and a certain pre-tension is applied to the rods of the upper and lower rods. The pulling rod, the lowering rod and the supporting bearing are connected and fixed to form a triangular bracket assembled on the top of the pier.

The pull-up rod and pull-down rod are one of steel bars, steel strands, and FRP bars, and the pull-up rod is located within the upper 1/3 of the vertical rod of the triangular bracket, and the pull-down rod is located at the upper part of the vertical rod of the triangle bracket. Within the lower 1/3 range, several middle pull rods are arranged between the upper pull rod and the lower pull rod.

The hole-forming pipe is one of steel pipe, cast iron pipe, FRP pipe, plastic pipe and PVC pipe, and the diameter is at least 2 mm larger than the diameter of the upper pull rod and the pull down rod.

The supporting support is made of profiled steel structure, steel pipe filled concrete structure or steel-concrete composite structure, the exposed length is not less than 50mm, and the buried depth is not less than 100mm.

The triangular brackets are arranged laterally at intervals along the side walls of the bridge pier column along the bridge direction, the number of which is more than two pairs, and a transverse connecting piece can be arranged between adjacent triangular brackets, and the pairs of triangular brackets jointly form support for each other.

The horizontal rods, oblique rods and vertical rods in the triangular bracket are connected by one or more of welding, riveting and bolting, and several web rods are arranged between the horizontal rods, diagonal rods and vertical rods. The rod reinforces the triangular bracket.

The connection mode between the triangular bracket and the support bearing is anchor bolt connection or welding connection.

Compared with other triangular brackets, the utility model has the following advantages:

1) The triangular brackets are arranged symmetrically on both sides of the pier column, and the force is symmetrical, which can realize the self-balance of the system on both sides, the force is reasonable, the possibility of overturning is small, and the bearing capacity is higher.

2) The horizontal rod, vertical rod and inclined rod can be pre-assembled and transported to the site, with high construction efficiency, saving construction period and high degree of assembly.

3) The triangular bracket of the present invention only needs to be connected with the tie rod and the support, so that the high-altitude operation is relatively less, and the safety is higher.

4) The structure proposed by the utility model is a cantilever structure, which only involves the upper space of the bridge pier, without ground support members such as columns, and does not need to consider the lower space and environmental conditions of the pier columns, and has a wider application range.

5) After the use is completed, only the connection between the triangular bracket and the bridge pier can be released to complete the disassembly of the triangular bracket. The operation is convenient and fast, and the dismantled triangular bracket can be used repeatedly, which is economical.

Description of drawings

Figure 1: A pier top assembled triangular bracket, schematic front view of the structure;

Figure 2: A pier top assembled triangular bracket, schematic side view of the structure;

Figure 3: A pier top assembled triangular bracket, the front view of the structure when the horizontal rod, the vertical rod and the oblique rod are set with a web rod;

Figure 4: A front view of the structure when several middle tie rods are arranged between the upper tie rod and the lower tie rod;

Figure 5: A structural front view of a triangular bracket assembled on the top of a pier, when a transverse connecting piece is arranged between adjacent triangular brackets;

Figure 6: A structural side view of a pier top-assembled triangular bracket, when a transverse connecting piece is arranged between adjacent triangular brackets;

In all drawings, 1 is bridge pier column; 2 is triangular bracket; 21 is horizontal rod; 22 is inclined rod; 23 is vertical rod; 24 is transverse connecting piece; 25 is web rod; 41 is the upper rod; 42 is the lower rod; 43 is the middle rod; 5 is the support.

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific embodiments of the present utility model will now be described in detail with reference to the accompanying drawings.

Example 1

As shown in Figures 1-2, a pier top assembled triangular bracket includes a bridge pier 1, a triangular bracket 2, a hole-forming pipe 3, an upper pull rod 41, a pull down rod 42, and a support bearing 5. Each The set of triangular brackets 2 is assembled into a right-angled triangular frame by horizontal rods 21, inclined rods 22, and vertical rods 23 in the factory or on-site. Support 5, the bottom end of the vertical rod 23 of the integrally assembled triangular bracket 2 is fixedly supported on the support support 5, and the upper and lower two hole-forming pipes 3 are horizontally arranged in the bridge pier column 1 to form two upper and lower horizontal holes, and formed. The axis of the hole pipe 3 is along the bridge direction of the bridge, the upper tie rod 41 and the lower rod 42 respectively pass through the horizontal tunnel in the hole forming pipe 3 in the bridge pier 1 and are respectively anchored symmetrically on both sides of the bridge pier 1 in the bridge direction. The upper and lower parts of the vertical rod 23 of the triangular bracket 2, a certain pre-tension is applied to the rods of the upper pull rod 41 and the lower pull rod 42, the triangle bracket 2 is connected to the upper pull rod 41, the lower pull rod 42 and the support bearing 5 After the connection is fixed, a pair of pier-top-assembled triangular brackets are formed, and three pairs of pier-top-assembled triangular brackets are arranged equidistantly along the bridge direction for each bridge pier column 1 .

Example 2

As shown in Figure 3, a pier top-assembled triangular bracket includes a bridge pier column 1, a triangular bracket 2, a perforated pipe 3, an upper pull rod 41, a pull down rod 42, and a support bracket 5. Each set of triangle brackets The frame 2 is assembled into a right-angled triangular frame by the horizontal rod 21, the inclined rod 22, the vertical rod 23 and the web rod 25 in the factory or on site, and three pairs of supports are embedded symmetrically on the two side walls of the bridge pier 1 along the bridge direction. Support 5, the bottom end of the vertical rod 23 of the integrally assembled triangular bracket 2 is fixedly supported on the support support 5, and the upper and lower two hole-forming pipes 3 are horizontally arranged in the bridge pier column 1 to form two upper and lower horizontal holes, and The axis of the hole-forming pipe 3 is along the bridge direction of the bridge, the upper tie rod 41 and the lower rod 42 respectively pass through the horizontal tunnel in the hole-forming pipe 3 in the bridge pier column 1 and are respectively anchored symmetrically to the bridge pier column 1 in the bridge direction. The upper and lower parts of the vertical rod 23 of the triangular bracket 2 on the side, a certain pre-tension is applied to the rods of the upper pull rod 41 and the lower pull rod 42, and the triangle bracket 2 is connected to the upper pull rod 41, the lower pull rod 42 and the supporting support. 5 After being connected and fixed, a pair of pier-top-assembled triangular brackets are formed, and three pairs of pier-top-assembled triangular brackets are arranged equidistantly along the bridge direction for each bridge pier column 1 .

Example 3

As shown in Figure 4, a pier top-assembled triangular bracket includes a bridge pier column 1, a triangular bracket 2, a perforated pipe 3, an upper pull rod 41, a pull down rod 42, and a support bracket 5. Each set of triangle brackets The frame 2 is assembled into a right-angled triangular frame by the horizontal rod 21, the inclined rod 22 and the vertical rod 23 in the factory or on site, and three pairs of supporting supports 5 are symmetrically embedded on the two side walls of the bridge pier 1 along the bridge direction. The bottom end of the vertical rod 23 of the integrally assembled triangular bracket 2 is fixedly supported on the support bearing 5, and the upper, middle and lower three hole-forming pipes 3 are horizontally arranged in the bridge pier 1 to form the upper, middle and lower three. The horizontal tunnel, and the axis of the hole-forming pipe 3 is along the bridge direction, the upper tie rod 41, the middle tie rod 43 and the lower rod 42 respectively pass through the horizontal tunnel in the hole-forming pipe 3 in the bridge pier 1 and are respectively anchored symmetrically. The upper, middle and lower middle parts of the vertical rods 23 of the triangular bracket 2 on both sides of the bridge pier column 1 in the direction of the bridge, and a certain pretension is applied to the rods of the upper pull rod 41 and the lower pull rod 42, and the triangle bracket 2 and the upper The tie rod 41, the lower rod 42 and the support bracket 5 are connected and fixed to form a pair of pier top assembled triangular brackets, and each bridge pier column 1 is provided with three pairs of pier top assembled triangular brackets equidistantly along the bridge direction.

Example 4

As shown in Figures 5-6, a pier top-assembled triangular bracket includes a bridge pier column 1, a triangular bracket 2, a hole-forming pipe 3, an upper pull rod 41, a pull down rod 42, and a support bearing 5. Each The set of triangular brackets 2 is assembled into a right-angled triangular frame by horizontal rods 21, inclined rods 22, and vertical rods 23 in the factory or on-site. Support 5, the bottom end of the vertical rod 23 of the integrally assembled triangular bracket 2 is fixedly supported on the support support 5, and the upper and lower two hole-forming pipes 3 are horizontally arranged in the bridge pier column 1 to form two upper and lower horizontal holes, and formed. The axis of the hole pipe 3 is along the bridge direction of the bridge, the upper tie rod 41 and the lower rod 42 respectively pass through the horizontal tunnel in the hole forming pipe 3 in the bridge pier 1 and are respectively anchored symmetrically on both sides of the bridge pier 1 in the bridge direction. The upper and lower parts of the vertical rod 23 of the triangular bracket 2, a certain pre-tension is applied to the rods of the upper pull rod 41 and the lower pull rod 42, the triangle bracket 2 is connected to the upper pull rod 41, the lower pull rod 42 and the support bearing 5 After the connection is fixed, a pair of pier top-assembled triangular brackets are formed. Each bridge pier column 1 is provided with three pairs of pier-top-assembled triangular brackets equidistantly along the bridge direction, and the three pairs of pier-top-assembled triangular brackets on each side are set. A transverse connecting member 24 is provided between them.

In the above embodiment:

The pull-up rod 41 and the pull-down rod 42 are one of steel bars, steel strands, and FRP bars, and the pull-up rod 41 is located within the upper 1/3 range of the vertical rod 23 of the triangular bracket 2 , and the pull-down rod 42 is located in the triangle bracket 2 . A number of middle pull rods 43 are arranged between the upper pull rod 41 and the lower pull rod 42 within the range of the lower 1/3 of the vertical rod 23 .

The hole-forming pipe 3 is one of steel pipes, cast iron pipes, FRP pipes, plastic pipes, and PVC pipes, and the diameter is at least 2 mm larger than the diameters of the upper pull rod 41 and the pull down rod 42 .

The support bearing 5 is made of a section steel structure, a steel pipe filled concrete structure or a steel-concrete composite structure, the exposed length is not less than 50mm, and the buried depth is not less than 100mm.

The triangular brackets 2 are arranged at lateral intervals along the side walls of the bridge piers 1 along the bridge direction, and the number is more than two pairs, and transverse connecting pieces 24 may be arranged between adjacent triangular brackets 2 .

The horizontal rod 21, the inclined rod 22, and the vertical rod 23 in the triangular bracket 2 are connected by one or more of welding, riveting and bolting, and several horizontal rods 21, inclined rods 22, and vertical rods 23 are arranged between Abdominal rod 25.

The connection mode between the triangular bracket 2 and the support bracket 5 is anchor bolt connection or welding connection.

Claims (7)

1. The utility model provides a mound top assembled triangular bracket, including bridge pier stud (1), triangular bracket (2), pore-forming pipeline (3), go up pull rod (41), lower link (42), support bearing (5), a serial communication port, each set of triangular bracket (2) is by horizontal rod (21), down tube (22), montant (23) are assembled at mill or scene and are become a right angled triangle framework, symmetry pre-buried many pairs of support bearing (5) on two lateral walls of bridge pier stud (1) in the same direction as the bridge, the bottom fixed stay in support bearing (5) of montant (23) of triangular bracket (2) after whole assembly, a plurality of pore-forming pipeline (3) horizontal arrangement form a plurality of horizontal pore canals in bridge pier stud (1), and the axis of pore-forming pipeline (3) is along the bridge in the same direction as the bridge, go up pull rod (41) and lower link (42) and pass the horizontal pore canals in pore-forming pipeline (3) in bridge pier stud (1) respectively and the symmetry anchor bridge in the same direction as the bridge respectively The middle upper part and the middle lower part of a vertical rod (23) of a triangular bracket (2) on two sides of a beam pier column (1) apply certain pretension in rod pieces of an upper pull rod (41) and a lower pull rod (42), and the triangular bracket (2), the upper pull rod (41), the lower pull rod (42) and a supporting bearing (5) are connected and fixed to form the pier top assembly type triangular bracket.

2. The pier-top assembled triangular bracket according to claim 1, characterized in that the upper tie rod (41) and the lower tie rod (42) are one of steel bars, steel strands and FRP bars, the upper tie rod (41) is located within the range of 1/3 on the upper part of the vertical rod (23) of the triangular bracket (2), the lower tie rod (42) is located within the range of 1/3 on the lower part of the vertical rod (23) of the triangular bracket (2), and a plurality of middle tie rods (43) are arranged between the upper tie rod (41) and the lower tie rod (42).

3. The pier-top assembled triangular bracket according to claim 1, wherein the hole-forming pipe (3) is one of a steel pipe, a cast iron pipe, an FRP pipe, a plastic pipe, and a PVC pipe, and has a diameter at least 2mm larger than the diameters of the upper and lower tie rods (41, 42).

4. The pier top assembly type triangular bracket as claimed in claim 1, wherein the supporting and supporting device (5) is made of a steel section structure, a steel tube filled concrete structure or a steel concrete laminated structure, the exposed length is not less than 50mm, and the embedded depth is not less than 100 mm.

5. A pier-top assembled triangular bracket according to claim 1, characterized in that the triangular brackets (2) are arranged at intervals transversely on the side wall of the bridge pier (1) along the bridge direction, the number of the brackets is more than two pairs, and transverse connecting pieces (24) can be arranged between the adjacent triangular brackets (2).

6. A pier-top assembled triangular bracket according to claim 1, characterized in that the horizontal rods (21), the diagonal rods (22) and the vertical rods (23) in the triangular bracket (2) are connected by one or more of welding, riveting and bolting, and a plurality of web members (25) are arranged among the horizontal rods (21), the diagonal rods (22) and the vertical rods (23).

7. A pier-mounted tripod according to claim 1 in which the connection between the tripod (2) and the supporting and supporting elements (5) is by anchor or welding.

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