CN215857280U - High mound river-crossing bridge penetrating bar cantilever supporting system - Google Patents

Abstract

The utility model discloses a high-pier river-crossing bridge penetrating bar overhanging support system, wherein a PVC pipe is reserved on the upper part of a reinforced concrete pier stud, a penetrating bar penetrates through the PVC pipe, two ends of the penetrating bar are fixed through a steel box, a steel wedge is padded on the steel box and provided with a large I-shaped steel, the top of the large I-shaped steel is fixed with a small I-shaped steel, a bottom die is paved on the small I-shaped steel, side dies are arranged on the periphery of the top of the bottom die, and the tops of the corresponding two side dies are connected together through side die fixing screws. The penetrating bar is used as a support, the I-shaped steel is used as a beam, and the height is adjusted by adopting the steel wedge to form a beam structure stress model. The penetrating bar in the whole structure is a support, the large I-steel support is placed on the penetrating bar to form a main beam, the small I-steel is placed on the large I-steel to form a secondary beam, and the pier stud, the penetrating bar support tie beam, the cover beam dead weight, the formwork dead weight and the whole load generated in the construction process are transmitted to the pier stud and the foundation through the penetrating bar. The structure atress is stable, and the security is high.

Description

High mound river-crossing bridge penetrating bar cantilever supporting system

Technical Field

The utility model relates to a high pier river-crossing bridge penetrating bar cantilever supporting system, and belongs to the technical field of bridge construction.

Background

In the process of building a bridge, a construction structure of erecting a support or a hoop method is generally adopted when pouring bridge pier tie beams or capping beams, the foundation at the bottom of the support needs to be reinforced when erecting the support, and the quantity of supports erected at the lower part of the beam is large. Therefore, the method has the defects of long construction period and large capital investment. Meanwhile, for poor address conditions, the casting quality of the beam is seriously affected by support settlement and deformation caused by uneven ground settlement. Meanwhile, the method brings great potential safety hazard to the bridge construction process. Compared with a support structure erected, the anchor ear structure can save capital investment, but the anchor ear can slide downwards in the beam pouring process, so that the beam body is inclined, and safety hidden dangers are brought to the bridge construction process.

Disclosure of Invention

The utility model aims to provide a high pier river-crossing bridge penetrating bar cantilever support system. The problems that in the prior art, construction period is long, investment is large, quality of bridge pier tie beams or bent caps is affected due to non-uniform settlement and deformation of erected supports, and anchor ear structures slide down when the bridge pier tie beams or bent caps are poured are solved.

The technical scheme of the utility model is as follows: the utility model provides a high mound cross a river bridge penetrating bar support system of encorbelmenting, many same horizontal height position in reinforced concrete pier stud upper portion that set up with arranging leaves the PVC pipe in advance, penetrate the penetrating bar that stretches out to the reinforced concrete pier stud outside in the PVC pipe, the penetrating bar both ends are fixed through the steel case, the pad has the steel wedge on the steel case, be provided with large-scale I-steel on the polylith steel wedge with one side, large-scale I-steel top is fixed with many small-size I-steel mutually perpendicular with it, small-size I-steel upper berth is equipped with the die block, the die block top is provided with the side form all around, corresponding both sides side form top links together through side form set screw.

In the high pier river-crossing bridge penetrating bar cantilever support system, the steel box is sleeved on the penetrating bar and is fixed through the screw cap.

In the high pier river-crossing bridge penetrating bar cantilever support system, the outermost edge of the bottom die is provided with the guardrail.

In the high pier river-crossing bridge penetrating bar overhanging support system, the outer wall of the PVC pipe positioned inside the reinforced concrete pier stud is fixedly connected with the fixed reinforcing steel bars, and the fixed reinforcing steel bars are fixed with the main reinforcing steel bars of the reinforced concrete pier stud.

In the high pier river-crossing bridge penetrating bar cantilever support system, the height difference between the two ends of the same PVC pipe and the PVC pipes on the same side is less than or equal to 5 mm.

The utility model has the beneficial effects that: compared with the prior art, the structure of the utility model has the following advantages:

(1) the method mainly comprises the steps of embedding PVC pipes on reinforced concrete pier columns at the bottoms of bent caps or tie beams, placing penetrating rods in the PVC pipes, erecting I-shaped steel on the penetrating rods, using the penetrating rods as supports and the I-shaped steel as beams, and adjusting the height by using steel wedges to form a beam structure stress model. The penetrating bar in the whole structure is a support, the large I-steel support is placed on the penetrating bar to form a main beam, the small I-steel is placed on the large I-steel to form a secondary beam, and the pier stud, the penetrating bar support tie beam, the cover beam dead weight, the formwork dead weight and the whole load generated in the construction process are transmitted to the pier stud and the foundation through the penetrating bar. The structure atress is stable, and the security is high.

(2) And the cost is saved. The whole structure forms a beam structure stress model, is convenient to install, reduces the treatment cost for soft soil foundations, simultaneously does not need to set up a floor type support, is convenient to construct, can lead to reuse, and greatly saves the construction cost.

(3) Construction is convenient, saves the time limit for a project. A floor type support does not need to be erected, the I-shaped steel operation platform is directly hoisted in place after being assembled on the ground according to actual conditions, the construction dismantling and installation are all integral hoisting, the standardized operation is realized, the construction progress is accelerated, and the construction period cost can be well saved.

(4) And the construction is safe. The I-steel has the characteristics of high strength and small deformation, the construction process is simpler, and the operation personnel can master the process easily, so that the construction is safe and reliable.

Drawings

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic side view of FIG. 1;

FIG. 3 is a schematic view of a laying structure of I-shaped steel;

FIG. 4 is a schematic cross-sectional view of FIG. 1;

FIG. 5 is a schematic view of the connection structure of the PVC pipe and the fixed steel bar.

Reference numerals: 1. reinforced concrete pier stud; 2. penetrating a bar; 3. a steel box; 4. steel wedge; 5. large I-steel; 6. small I-steel; 7. bottom die; 8. side mould; 9. fixing a screw rod by a side die; 10. fixing the steel bars; 11. PVC pipes; 12. a nut; 13. and (4) a guardrail.

Detailed Description

The utility model is further illustrated by the following figures and examples, which are not to be construed as limiting the utility model.

The embodiment of the utility model comprises the following steps: a supporting system for cantilever of a penetrating bar of a high-pier river-crossing bridge is shown in attached figures 1-5, PVC pipes 11 are reserved at the same horizontal height position on the upper portions of a plurality of reinforced concrete pier studs 1 arranged in the same row, penetrating bars 2 extending out of the reinforced concrete pier studs 1 penetrate through the PVC pipes 11, two ends of the penetrating bars 2 are fixed through steel boxes 3, steel wedges 4 are padded on the steel boxes 3, large-scale I-shaped steel 5 is arranged on the steel wedges 4 on the same side, a plurality of small-scale I-shaped steels 6 perpendicular to the large-scale I-shaped steel 5 are fixed at the tops of the large-scale I-shaped steel 5, bottom dies 7 are paved on the small-scale I-shaped steel 6, side dies 8 are arranged on the peripheries of the tops of the bottom dies 7, and the tops of the corresponding side dies 8 on two sides are connected together through side die fixing screws 9.

The utility model discloses a high pier river-crossing bridge penetrating bar cantilever support system, which comprises the following steps:

step S1, pre-burying a PVC pipe 11 at a proper position of the reinforced concrete pier stud 1;

step S2, hoisting the penetrating rod 2 by a crane and putting the penetrating rod into the PVC pipe 11, and installing the steel box 3 to fix the penetrating rod 2;

step S3, placing a steel wedge 4 on the steel box 3 for leveling, installing and leveling a large I-steel 5 lifted by a crane, and installing a small I-steel 6 on the large I-steel 5 for leveling and fixing;

step S4, hoisting and installing the bottom die 7 by a crane, and arranging tie beam or cover beam steel bars;

step S5, mounting the side mold 8, pouring concrete and curing;

and S6, when the strength of the concrete poured in the step S5 reaches 2.5Mpa, removing the side mold 8, and removing the mold in sequence according to the sequence after the concrete reaches the design strength, wherein the mold removing sequence comprises a bottom mold 7, a small I-shaped steel 6, a large I-shaped steel 5, a steel box 3 and a penetrating bar 2. And in order to facilitate removal of the mold, a mold release agent is applied to the bottom mold 7 in step S4.

According to the high-pier river-crossing bridge penetrating bar cantilever supporting system, a pre-buried special PVC pipe 11 is adopted, a through hole is formed in the top of a reinforced concrete pier stud 1, a penetrating bar 2 penetrates through the PVC pipe 11, horizontal steel boxes 3 are arranged at two ends of the penetrating bar 2, a large I-shaped steel 5 is installed to form a main beam, a small I-shaped steel 6 is installed to form a secondary beam, a bottom die 7 and a side die 8 are erected, and the top ends of the side dies 8 are fixedly connected through side die fixing screw rods 9. And then pouring concrete to form the solid pier tie beam and the capping beam.

In order to ensure the stability of the support system, the load is transmitted to the pier column and the foundation through the penetrating rod 2, namely the penetrating rod 2 is used as a support, the large I-steel 5 is erected on the penetrating rod 2 to form a main beam, the small I-steel 6 is placed on the large I-steel 5 to form a secondary beam, the dead weight of the tie beam or the capping beam and the construction load are transmitted to the secondary beam 6 and then transmitted to the main beam, the load is transmitted to the support by the main beam, and the support is transmitted to the reinforced concrete pier column 1 and the foundation to cantilever the support system.

And a guardrail 13 is arranged above the small I-shaped steel 6 to play a role in protection.

In order to ensure the acting force balance of the reinforced concrete pier stud 1, the height difference of two ends of the same PVC pipe 11 is less than or equal to 5mm, so that the levelness of the PVC pipe is ensured. And the height difference between the PVC pipes 11 on the same side is less than or equal to 5mm, so that the whole supporting system is conveniently leveled.

In order to further ensure that the PVC pipe 11 does not displace in the pouring process and the acting force balance of the penetrating rod 2 arranged on the reinforced concrete pier stud, the outer wall of the PVC pipe 11 positioned inside the reinforced concrete pier stud 1 is fixedly connected with the fixed reinforcing steel bars 10, and the fixed reinforcing steel bars 10 are fixed with the main reinforcing steel bars of the reinforced concrete pier stud 1.

The two ends of the penetrating bar 2 are provided with coarse threads, and the steel box 3 is sleeved on the penetrating bar 2 and is fixed through a nut 12.

Claims (5)

1. The utility model provides a high mound cross a river bridge penetrating bar support system of encorbelmenting which characterized in that: the reinforced concrete pier stud comprises a plurality of reinforced concrete pier studs (1) arranged in the same row, wherein PVC pipes (11) are reserved at the same horizontal height position of the upper portion of each reinforced concrete pier stud (1), penetrating bars (2) extending out of the reinforced concrete pier studs (1) penetrate through the PVC pipes (11), the two ends of the penetrating bars (2) are fixed through steel boxes (3), steel wedges (4) are padded on the steel boxes (3), large I-shaped steel (5) are arranged on the steel wedges (4) on the same side, a plurality of small I-shaped steels (6) perpendicular to the large I-shaped steel (5) are fixed at the tops of the large I-shaped steel (5), bottom dies (7) are paved on the small I-shaped steel (6), side dies (8) are arranged around the tops of the bottom dies (7), and the tops of the corresponding side dies (8) on the two sides are connected together through side die fixing screw rods (9).

2. The high pier river-crossing bridge penetrating bar cantilever supporting system according to claim 1, characterized in that: the steel box (3) is sleeved on the penetrating rod (2) and is fixed through a nut (12).

3. The high pier river-crossing bridge penetrating bar cantilever supporting system according to claim 1, characterized in that: and a guardrail (13) is arranged at the outermost edge of the bottom die (7).

4. The high pier river-crossing bridge penetrating bar cantilever supporting system according to claim 1, characterized in that: the PVC pipe (11) outer wall positioned in the reinforced concrete pier stud (1) is fixedly connected with the fixed reinforcing steel bars (10), and the fixed reinforcing steel bars (10) are fixed with the main reinforcing steel bars of the reinforced concrete pier stud (1).

5. The high pier river-crossing bridge penetrating bar cantilever supporting system according to claim 1, characterized in that: the height difference of the two ends of the same PVC pipe (11) and the PVC pipe (11) on the same side is less than or equal to 5 mm.

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