CN107724247A - A kind of box bridge tunnel face changes the outfit technique - Google Patents

Abstract

Changed the outfit technique the invention discloses a kind of box bridge tunnel face, utilize a set of box beam flipped device, the box beam that tire beam car ships is unloaded, then with can by tunnel Yun Liang, set a roof beam in place but box beam is sling, transports, set up by integration of transporting and building machine that the speed of travel is slower；The advantage of the invention is that：Work method is simple, has substantially increased tunnel bridge molding box erection efficiency, has saved construction cost, has wide market prospects and good social benefit, economic benefit.

Description

A Reinstallation Technology of Tunnel Entrance of Box Bridge

technical field

The invention relates to a process for inverting a box-shaped beam at a tunnel entrance, specifically a process for inverting a box-shaped beam on a tire beam transport vehicle to an integrated machine for transporting a frame through the process of a box-shaped beam at the tunnel entrance, which belongs to field of bridge construction.

Background technique

The construction period of the integrated rack beam project is short, there are tunnels on the line, and the beam transport distance is long, but the beam transport efficiency of the integrated frame transport machine is low, the driving speed is slow, and the construction period cannot be guaranteed; the beam transporting vehicle with fast driving speed is used to transport the beam. But the tire beam truck cannot carry the beam through the tunnel.

If a set of box girder hoisting equipment is installed at the tunnel entrance, the box girder is carried to the tunnel entrance by a tire beam transporter, the box girder is hoisted down by the hoisting equipment, and then the beam is lifted by the integrated frame transporter; It is narrow, unable to meet the station for installing equipment for hoisting equipment, and the transportation, installation, and dismantling costs are high, and the foundation requirements are relatively strict.

Contents of the invention

In order to solve the above problems, the present invention designs a box-type bridge tunnel mouth replacement process, which has a simple construction method, greatly improves the erection efficiency of box-girder bridges with tunnels, saves construction costs, and has broad market prospects and good social benefits. benefit, economic benefit.

Technical scheme of the present invention is:

A box-shaped bridge tunnel mouth replacement process, the specific construction process is as follows:

Step 1: Install the inverted beam on the tire beam truck, and place the box beam on top of the inverted beam;

Step 2: Install the inverted support device at the proper position of the tunnel entrance;

Step 3: The tire beam transport vehicle drives the beam to the inverted support device, and the inverted beam and its upper box girder are supported by the inverted support device, and the tire beam transport vehicle drives out of the belly of the box beam;

Step 4: Lower the inverted support device with the inverted beam and box girder;

Step 5: The all-in-one transport and frame machine comes, moves across the box girder, lifts the box girder, and then transports the box girder to the erection position, the whole process of erecting the box girder.

Preferably, in the first step, the inverted beam is placed on the tire beam transport vehicle, and the box beam is placed above the inverted beam, that is, the box beam is supported above the inverted beam, and the bottom is supported on the tire beam transport vehicle.

Preferably, in the third step, the inverted support device can support the inverted beam, so that the tire beam transport vehicle can be unloaded, and after the force transfer is completed, the tire beam transport vehicle can be unloaded and then drive out of the belly of the box girder.

Preferably, in the step four, the inverted support device can lower the inverted beam and the box beam to meet the height of the hanging beam of the all-in-one machine for transporting and transporting the frame, and is convenient for the hanging beam of the all-in-one machine for transporting and transporting the frame.

The present invention uses a set of inversion device to unload the box girder from the tire beam transport vehicle, lower the height, and then use the integrated machine for lifting, transporting and erecting the beam, which greatly improves the transport efficiency of the box girder and saves construction cost.

The invention has the advantages that the construction method is simple, the erection efficiency of the tunnel bridge type box girder is greatly improved, the construction cost is saved, and the invention has broad market prospects and good social and economic benefits.

The present invention will be further described below in conjunction with drawings and embodiments.

Description of drawings

Fig. 1 is a side view of the overall structure of the present invention;

Fig. 2 is a schematic diagram of an inverted support device of the present invention;

Fig. 3 is a schematic diagram of the construction process of the present invention;

In the figure: 1. Box beam, 2. Inverted beam, 3. Inverted support device, 3a, upper beam, 3b, hydraulic cylinder, 3c, guide column, 3d, chassis, 4. tire beam transport vehicle, 5, Concrete foundation, 6. The all-in-one machine for transport and frame, 7. Subgrade foundation.

detailed description

Preferred embodiments of the present invention are described below, and it should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

Example 1

As shown in Figure 1-3, a box girder is inverted at the tunnel entrance, and the specific construction process is as follows:

Step 1: Install the inverted beam 2 on the tire beam transport vehicle 4, and place the box beam 1 above the inverted beam 2;

Step 2: Place the inverted support device 3 at a proper position at the tunnel entrance;

Step 3: The tire beam transport vehicle 4 carries the box beam 1 and travels to the inverted support device 3, and the inverted beam 2 and its upper box beam 1 are supported by the inverted support device 3, and the tire beam transport vehicle 4 drives out of the box Beam 1 inside the abdomen;

Step 4: Lower the inverted support device 3 with the inverted beam 2 and the box beam 1;

Step 5: The all-in-one machine 6 for transporting frame comes, moves across the box girder 1, lifts the box girder 1, then transports the box girder 1 to the erection position, and completes the whole process of erecting the box girder 1.

The above-mentioned inversion device is mainly composed of two inversion beams 2 at the front and rear, four sets of inversion support devices 3, an electrical control system, a hydraulic control system, etc., wherein each set of inversion support devices 3 consists of an upper beam 3a, a hydraulic cylinder 3b, Guide post 3c, chassis 3d and other devices are composed.

Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still The technical solutions recorded in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (3)

1. a kind of box-type bridge tunnel entrance replacement technique is characterized in that, concrete construction technique is as follows: Step 1: Install the tire beam truck on the inverted beam, and then place the box beam on the inverted beam; Step 2: Install the inverted support device at the proper position of the tunnel entrance; Step 3: The inverted beam in step 1 is carried by the tire beam transport vehicle and driven to the inverted support device in step 2, and the inverted beam and the box girder above it are supported by the inverted support device, and then The tire beam transport vehicle drives out of the abdomen of the box girder; Step 4: The inverted support device is lowered with the inverted beam and the box beam; Step 5: The all-in-one machine for transporting and racking comes, moves across the box girder, lifts the box girder, transports the box girder to the erection position, and erects the box girder. 2 . The process of inverting box girders at tunnel entrances according to claim 1 , characterized in that the box girders are supported above the inverted beams and supported below on the tire beam transport vehicle. 3 . 3. The inversion process of box girder at the tunnel entrance according to claim 1, characterized in that: the inversion support device supports the inversion beam, unloads the tire beam transport vehicle, and completes the stress convert.