Special-shaped structure for supporting D-shaped beam system

Abstract

The utility model provides a special-shaped structure for supporting a D-shaped beam system, which comprises a plurality of groups of D-shaped beam supporting units for supporting the end parts of reinforced D-shaped beams on two sides of a track, each group of D-shaped beam supporting units comprises two supporting structures which are oppositely arranged, each supporting structure comprises two piles and a bracket which stretches across the tops of the two piles, one end of the bracket in each supporting structure is located between the two reinforcing D beams, the piles are located on the outer sides of the reinforcing D beams, the brackets are fixed to the tops of the piles, and the ends of the reinforcing D beam frames are arranged on the top faces of the brackets. The utility model has the beneficial effects that after improvement, the construction range can be far away from the railway, the construction is more convenient, the structure is firmer compared with the original fulcrum pile, the railway protection is better, the construction is more convenient, and by improving the construction method, the construction time is more abundant, and the construction period is greatly shortened.

Description

Technical Field

[0001] The utility model relates to the field of railway construction, in particular to a special-shaped structure for supporting a D-shaped beam system. Background Art

[0002] Among the existing line reinforcement methods, D-beam reinforcement has the advantages of fast construction speed, high quality, low cost, high safety and convenient construction. The D-beam device can concentrate all the gravity of the rails and sleepers on the longitudinal beam of the D-beam, and finally apply it to the fulcrum piles. After the D-beam reinforcement, all the earthwork under the railway is excavated, and the gravity of the entire railway and the reinforcement system is all applied to the fulcrum piles. The original fulcrum piles are very close to the railway. During construction, the machinery will invade the railway limit, so the construction will affect the normal operation of the train. Therefore, how to construct the fulcrum piles is the top priority. First of all, the construction must not affect the safety of the train. Secondly, the construction needs to be completed as soon as possible to reduce the time of construction next to the railway.

[0003] In the original construction, the two ends of the D-beam longitudinal beam were directly placed on the support piles. The original pile position was located within the railway limit. During construction, manual soil excavation was required. The pile diameter was 1.5m, which was inconvenient for personnel movement and soil excavation. The construction time was long. When manually excavating the soil, pipes needed to be placed while digging. Mechanical lifting and delivery of pipes was required near the railway. The above construction methods must be constructed within the skylight point. The daily construction time is short and the construction cycle is long, which will delay subsequent construction. If the water level is high nearby, there is a risk of collapse when the manual hole is deep. Therefore, the original construction method is not only time-consuming and labor-intensive, but also dangerous to the personal safety of workers and the railway operating line. Summary of the invention

[0004] The problem to be solved by the utility model is to provide a special-shaped structure for supporting a D-shaped beam system, thereby overcoming the deficiencies in the prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a special-shaped structure for supporting a D-beam system, including a plurality of groups of D-beam support units for supporting the ends of the reinforced D-beams on both sides of the track, each group of the D-beam support units includes two relatively arranged support structures, the support structure includes two piles and a corbel spanning the tops of the two piles, one end of the corbel in each of the support structures is located between the two reinforced D-beams, the pile is located on the outside of the reinforced D-beam, the corbel is fixed to the top of the pile, and the end of the reinforced D-beam frame is arranged on the top surface of the corbel.

[0006] Optionally, the bottom surface of the corbel in each of the supporting structures is formed by a slope connected to a horizontal plane, the horizontal plane is in contact with the top surface of the pile column, and the slope starts from the upper part of one end of the two corbels located between the reinforced D-beams to the position connected with the horizontal plane.

[0007] The advantages and positive effects of the utility model are: after the improvement, the construction scope can be kept away from the railway, the construction is more convenient, the structure is more solid than the original fulcrum piles, the protection for the railway is better, and the construction is more convenient. By improving this construction method, the construction time is more sufficient and the construction period is greatly shortened; the work of manually going down the well to dig the soil is eliminated, the construction time is reduced, the labor cost is saved, the work efficiency is improved, and the construction guidance significance is remarkable. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the overall structure of a specific implementation method of the utility model;

[0009] Figure 2 yes Figure 1 Schematic diagram of the horizontal structure;

[0010] In the figure: 1, corbel; 1-1, inclined plane; 1-2, horizontal plane; 2, pile column; 3, reinforced D beam; 4, track. DETAILED DESCRIPTION

[0011] The utility model is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the utility model. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood by specific circumstances.

[0012] As shown in the figure, the utility model provides a special-shaped structure for supporting a D-beam system, including a plurality of groups of D-beam support units for supporting the ends of reinforced D-beams 3 on both sides of a track 4, each group of D-beam support units including two relatively arranged support structures, the support structure including two piles 2 and a corbel 1 spanning the tops of the two piles 2, one end of the corbel 1 in each support structure is located between the two reinforced D-beams 3, the pile 2 is located on the outside of the reinforced D-beam 3, the corbel 1 is fixed to the top of the pile 2, and the end of the reinforced D-beam 3 is mounted on the top surface of the corbel 1.

[0013] Compared with the prior art, the above structure has a certain distance between the position of the corbel 1 and the reinforced D-beam 3, which expands the construction space at the bottom of the pile column and reserves enough space for construction with mechanical equipment (such as a submersible drilling rig). Compared with the prior art which can only rely on manual work due to the limitation of construction space, the construction efficiency is significantly improved. The railway track 4 is supported by the D-shaped crossbeam, and the D-shaped crossbeam transmits gravity to the reinforced D-beam 3. Both ends of the reinforced D-beam 3 are placed on the corbel 1. The corbel 1 transmits the gravity of the entire system to the pile column 2, and the pile column 2 transmits the force to the ground. The construction steps of this structure are as follows: outside the railway limit, first use a submersible drill to construct pile column 2, and the technical staff will defend the pile position. After the pile foundation is in place, see if it affects the railway traffic. If it does, the pile foundation position needs to be readjusted. If it does not, the next step of construction can be carried out. After the submersible drill is in place, the positive cycle method is used for drilling construction. After the pile foundation construction is completed, the pile head is chiseled out, the steel bars are tied to support the formwork, and the corbel 1 part is constructed. The corbel 1 is a reinforced concrete structure and requires manual tying of the steel bars to support the formwork. Since it is close to the railway track 4, it needs to be constructed within the skylight point. After the corbel 1 reaches the design strength, the D-beam reinforcement construction is carried out.

[0014] The advantages of this structure compared with the existing technology are as follows: (1) Previously, the excavation was done manually and the construction was done within the skylight point, which was time-sensitive. The support piles of this structure can be constructed near the railway, which gives the construction time plenty of time; (2) The original manual excavation construction method has been changed to submersible drilling rig construction, which is more efficient and faster; (3) Compared with manual excavation, the positive circulation drilling of the drilling rig is safer, greatly reducing the risk of hole collapse, preventing personnel from being injured, and maintaining the safety of railway equipment.

[0015] The bottom surface of the corbel 1 in each supporting structure is composed of an inclined surface 1-1 connected to a horizontal surface 1-2, the horizontal surface 1-2 is in contact with the top surface of the pile column 2, and the inclined surface 1-1 starts from the upper part of one end of the corbel 1 between the two reinforced D beams 3 to the position connected with the horizontal surface 1-2. The bottom surface of the corbel 1 adopts a splicing setting in which the inclined surface 1-1 connects the horizontal surface 1-2, which can save the reinforced concrete materials used for casting the corbel 1. The formation of the slope 1-1 is formed by slope excavation during the construction process to avoid the risk of railway roadbed collapse caused by the distance between the pile 2 and the track 4 being too close. From a mechanical point of view, if this device is regarded as a seesaw, the pile 2 close to the track 4 is the fulcrum, then the D-beam 12 will press downward, and the pile 2 far away from the railway has the function of pulling downward. Therefore, the downward pressure must be smaller and safer. Under the condition of ensuring structural safety, after eliminating the reinforced concrete structure of the inclined surface 1-1, the downward dead weight is reduced, and the entire device can form a more stable support structure for the D-beam 12.

[0016] The above is a detailed description of the embodiments of the utility model, but the contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A special-shaped structure for supporting a D-beam system, characterized in that: It comprises a plurality of groups of D-beam support units for supporting the ends of the reinforced D-beams on both sides of the track, each group of the D-beam support units comprises two oppositely arranged support structures, the support structures comprise two piles and a corbel spanning the tops of the two piles, one end of the corbel in each of the support structures is located between the two reinforced D-beams, the piles are located on the outside of the reinforced D-beams, the corbel is fixed to the top of the piles, and the end of the reinforced D-beam frame is arranged on the top surface of the corbel.

2. The special-shaped structure for supporting a D-beam system according to claim 1, characterized in that: The bottom surface of each corbel in the supporting structure is formed by an inclined surface connected to a horizontal surface, the horizontal surface is in contact with the top surface of the pile column, and the inclined surface starts from the upper part of one end of the two corbels located between the reinforced D beams to the position connected with the horizontal surface.

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