Bridge abutment and tunnel synchronous construction device

Abstract

The invention belongs to the technical field of deep foundation pit top passing and bridge abutment entering tunnel connection construction, and particularly relates to a bridge abutment and tunnel synchronous construction device which comprises a base, end columns, bailey beams, transverse distribution beams, longitudinal distribution beams and steel plates. The bailey beams are installed on the end columns, the transverse distribution beams are arranged at the bottoms of the bailey beams, the bottoms of every two adjacent bailey beams are connected through the transverse distribution beams, the longitudinal distribution beams are installed on the tops of the transverse distribution beams, and the steel plates are arranged on the tops of the longitudinal distribution beams. The device can be installed above a bridge abutment foundation pit, provides a passage for a tunnel, achieves the effect of synchronous construction, and solves the problems that in the prior art, due to synchronous construction of the tunnel and a bridge, construction working faces conflict, and two working procedures cannot be synchronously constructed.

Description

Technical Field

[0001] This invention relates to the field of deep foundation pit top passage and bridge abutment to tunnel connection construction technology; specifically, this invention relates to a bridge abutment and tunnel synchronous construction device. Background Technology

[0002] Currently, high-speed rail construction is gradually shifting from urban areas to mountainous regions. The undulating terrain of these areas necessitates numerous designs that combine bridges and tunnels or involve bridge abutments leading into tunnels. Traditional bridge-tunnel construction methods involve either completing the tunnel before constructing the bridge abutments, or constructing the bridge abutment foundations first, backfilling, and then proceeding with tunnel construction. These sequential construction processes require significant time. When time constraints are tight, the sequential construction cannot meet the required schedule. Therefore, this research focuses on simultaneous bridge-tunnel construction, employing a device that allows simultaneous bridge abutment and tunnel construction, using the bridge abutment foundation pit as a tunnel construction passage to achieve synchronized construction. Summary of the Invention

[0003] In view of this, the present invention aims to solve the problem of conflicting construction work surfaces caused by the simultaneous construction of tunnels and bridges, and the inability of the two processes to be carried out simultaneously. It provides a device for simultaneous construction of bridge abutments and tunnels, which is installed above the bridge abutment foundation pit to provide a passage for the tunnel and achieve the effect of simultaneous construction.

[0004] To achieve the aforementioned objectives, the present invention provides a bridge abutment and tunnel synchronous construction device, comprising a base, end columns, Bailey bridge beams, transverse distribution beams, longitudinal distribution beams, and steel plates. The base is fixed to the ground by embedded parts, the end columns are installed on the base, the Bailey bridge beams are installed on the end columns, the transverse distribution beams are located at the bottom of the Bailey bridge beams, and the bottom connections of two adjacent Bailey bridge beams are located at the transverse distribution beams, the longitudinal distribution beams are installed at the top of the transverse distribution beams, and the steel plates are located at the top of the longitudinal distribution beams.

[0005] Preferably, the base is provided with a bridge seat for fixing the end post, and the base and the bridge seat are connected by a first connecting pin.

[0006] Preferably, the Bailey beam includes Bailey panels and a flower stand, and the Bailey panels and the flower stand are connected by a second connecting pin.

[0007] Preferably, the top of the Bailey beam is connected to a reinforcing chord via a pin, and the reinforcing chord is connected to the end column via a truss pin.

[0008] Preferably, the wind-resistant tie rod is located on the outside of the Bailey beam.

[0009] Compared with the prior art, the present invention has at least the following beneficial effects: 1. Saves construction time: It can reduce the traditional construction sequence cycle, shorten the construction period compared with normal bridge abutment construction, and improve work efficiency.

[0010] 2. Convenient transportation and disassembly: quick and easy on-site assembly and disassembly, high construction efficiency, and can be disassembled into lightweight parts for easy transportation.

[0011] 3. Good economic efficiency and high turnover rate: The components are made of steel structure, which has good corrosion resistance and can effectively resist the erosion of the external environment. Only periodic inspection and simple anti-corrosion maintenance are required. In addition, the construction cycle of steel structure is short, and it can be reused after the construction task is completed quickly.

[0012] 4. High adaptability: The span can be lengthened or shortened by adjusting the number of Bailey pieces, offering a wide range of choices and high cost-effectiveness. Attached Figure Description

[0013] The disclosure of this invention will become more apparent from the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the transverse distribution beam, longitudinal distribution beam, and steel plate of the present invention.

[0014] Attached reference numerals: 1-base, 2-Bailey beam, 3-reinforcing chord, 4-first connecting pin, 5-wind-resistant tie rod, 6-transverse distribution beam, 7-longitudinal distribution beam, 8-steel plate, 9-flower rack, 10-end column. Detailed Implementation

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] like Figure 1 and Figure 2 As shown, this embodiment provides a bridge abutment and tunnel synchronous construction device, including a base 1, end columns 10, Bailey beams 2, transverse distribution beams 6, longitudinal distribution beams 7, and steel plates 8. The base 1 is fixed to the ground by embedded parts, the end columns 10 are installed on the base 1, the Bailey beams 2 are installed on the end columns 10, the transverse distribution beams 6 are located at the bottom of the Bailey beams 2, and the bottom connection of two adjacent Bailey beams 2 is located at the connection of the transverse distribution beams 6. The longitudinal distribution beams 7 are installed at the top of the transverse distribution beams 6, and the steel plates 8 are located at the top of the longitudinal distribution beams 7.

[0017] The base 1 is prefabricated and pre-embedded parts are installed in advance. The base 1 is used to adjust the level of the entire channel to ensure uniform stress. The base 1 is equipped with a bridge seat for fixing the end column 10. The base 1 and the bridge seat are connected by the first connecting pin 4. The end column 10 is fixed to the bridge seat by bolting. The bottom of the base 1 is located on both sides of the bridge and tunnel, serving as the load-bearing system to support the Bailey beam 2 and restricting the lateral and longitudinal displacement of the Bailey beam 2.

[0018] The Bailey bridge 2 comprises Bailey panels and a flower rack 9, which are connected by a second connecting pin to form the Bailey bridge 2. The flower rack 9 is used for the lateral connection of the Bailey panels to form a whole. The Bailey bridge 2 is spliced ​​sequentially on both sides of the passage. Wind-resistant tie rods 5 are installed on the outer side of the Bailey bridge 2.

[0019] The top of the Bailey beam 2 is connected to a reinforcing chord 3 via a pin, and the reinforcing chord 3 is connected to the end column 10 via a truss pin. Specifically, the Bailey beam 2 and the reinforcing chord 3 located at both ends of the passage are simultaneously connected to the end column 10 via truss pins, so that the end column 10, the reinforcing chord 3 and the Bailey beam 2 form a complete system.

[0020] The reinforcing chord 3 increases the stress on the Bailey beam 2, and the wind-resistant tie rod 5 increases the lateral stability of the passage. The Bailey beam 2, the reinforcing chord 3, and the wind-resistant tie rod 5 form a triangular truss structure, which has extremely strong stability.

[0021] The transverse distribution beam 6 can be made of No. 28 I-beams, serving as a transverse connection system. The longitudinal distribution beam 7 can be made of No. 10 I-beams, connected to the transverse distribution beam 6 by welding. The longitudinal distribution beam 7 reduces the transverse spacing of the transverse distribution beams 6 and acts as a load-bearing system to ensure uniform stress distribution. The steel plate 8 can be made of 8mm thick checkered steel plate, covering the entire passageway. It is mainly used to fill gaps, smooth the passageway surface, and ensure normal passage.

[0022] The technical scope of this invention is not limited to the contents of the above specification. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the scope of this invention.

Claims

1. A device for simultaneous construction of bridge abutments and tunnels, characterized in that, The device includes a base (1), an end column (10), a Bailey beam (2), a transverse distribution beam (6), a longitudinal distribution beam (7), and a steel plate (8). The base (1) is fixed to the ground by embedded parts. The end column (10) is installed on the base (1). The Bailey beam (2) is installed on the end column (10). The transverse distribution beam (6) is located at the bottom of the Bailey beam (2), and the bottom of two adjacent Bailey beams (2) are connected by the transverse distribution beam (6). The longitudinal distribution beam (7) is installed at the top of the transverse distribution beam (6), and the steel plate (8) is located at the top of the longitudinal distribution beam (7).

2. The bridge abutment and tunnel synchronous construction device as described in claim 1, characterized in that, The base (1) is provided with a bridge seat for fixing the end post (10), and the base (1) and the bridge seat are connected by a first connecting pin (4).

3. The bridge abutment and tunnel synchronous construction device as described in claim 1, characterized in that, The Bailey beam (2) includes Bailey panels and a flower stand (9), and the Bailey panels and the flower stand (9) are connected by a second connecting pin.

4. The bridge abutment and tunnel synchronous construction device as described in claim 3, characterized in that, The top of the Bailey beam (2) is connected to a reinforcing chord (3) by a pin, and the reinforcing chord (3) is connected to the end column (10) by a truss pin.

5. The bridge abutment and tunnel synchronous construction device as described in claim 1, characterized in that, The wind-resistant tie rod (5) is set on the outside of the Bailey beam (2).

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