JPS60126410A - Delivery type ocean bridge construction method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention is applicable to sea berths built on the sea and factories/factories on land.
This article relates to the rolling-out marine bridge construction method, which is a construction method for connecting bridges for cargo handling and transportation constructed between warehouses, etc.

(Prior art) Conventionally, the construction of a connecting bridge for cargo handling and transportation connecting a sea berth built on the sea and the shore was done by driving piles on the seabed ground to build the substructure, and then using hand-rolled plywood. Bridge girders were erected using methods such as method and extrusion method.

However, with either construction method, the substructure must be constructed using a Sumire offshore pile driver, etc. before the superstructure is constructed. For this reason, equipment such as a marine pile driver is required, and the materials necessary for the construction of the substructure, which requires a lot of effort, have to be transported by sea, which makes construction cumbersome, and the construction period is long and construction costs are high. It had the drawback of being reedy.

(Purpose of the Invention) This invention was devised in view of the above-mentioned problems, and it minimizes the equipment necessary for construction, makes the work easy, and significantly shortens the construction period and construction costs. The purpose of the present invention is to provide a rolling-out offshore bridge construction method that can reduce the

(Structure of the Invention) The retractable offshore bridge construction method of this invention comprises at least two
A movable bridge girder for work spanning a span is provided, a temporary column that can move up and down in the vertical direction is installed at the end of the movable bridge girder, and a pile driver is placed on the movable bridge girder, and the pile driver that has already been erected is installed at the opposite end. The ends of the permanent bridge girder placed movably on the construction bridge girder are connected, the movable bridge girder is sent out a predetermined length along the existing permanent pile, and the temporary pillar is brought into contact with the supporting ground. After supporting the tip of the movable bridge girder, move the front H upper pile driver to the vicinity of the end and drive the permanent pile to establish the bridge pier, and then install the bridge between the sent-out movable bridge girder and the existing permanent bridge girder. The main bridge girders placed above are lowered and connected and fixed, and the same work is repeated sequentially to construct the bridge.Finally, the movable bridge girder that has been extended is fixed to the same length and used as the permanent bridge girder. (5) Yes.

In the above configuration, the permanent pile driving work and the erection and connection fixing work of the permanent bridge girder are a series of works, so it does not matter which one is performed first.

The pile driver placed on the movable bridge girder may be movable on the movable bridge girder or may be fixed at the end of the movable bridge girder in the moving direction.

(Example) The present invention will be explained below based on embodiments shown in the drawings.

FIG. 1 is a side view of an embodiment of the present invention, showing the movable bridge girder 1 in a moving state.

A movable bridge girder 1 assembled with trusses is a two-span bridge supported by five piers 2, and both ends protrude from the piers 2 and are supported in a cantilevered manner.

The pier 2 is constructed from a plurality of permanent piles 5 (four in the figure), a support beam 4, and a connecting panel 21, and is movable in the bridge axis direction by a plurality of rollers 5 as shown in FIG. It supports bridge girder 1 (4).

Temporary pillars 6 and 7 are provided at the ends of the movable bridge girder 1 in the direction of movement and in the vicinity thereof, which are vertically movable up and down. A movable pile driver 8 is placed on the rounded movable bridge girder 1, and is capable of driving permanent piles 5.

Furthermore, if both ends of the movable bridge girder 1 are supported and fixed by the piers 2, it can also be used as a permanent bridge girder 9.

Hereinafter, one step of the retractable offshore bridge construction method of the present invention will be explained according to the construction order.

(1) As shown in FIG. 1, the end of the two-piece suspension bridge girder 9a is connected to the opposite end of the movable bridge girder 1, which has the temporary columns 6 and 7 and on which the pile driver 8 is mounted. The permanent bridge girder 9a is placed on the constructed permanent bridge girder 9, and its five-piece bridge girder side end is supported by rollers and is movable in the bridge axis direction.

(2) Next #! As shown in Fig. 2, the movable bridge girder 1 connected to the permanent bridge girder 9a is sent out a predetermined length along the existing permanent piles 5, and the temporary columns 6 and 7 are lowered to come into contact with the supporting ground. to support the end of the movable bridge girder 1.

(5) Then, as shown in FIG. 5, the pile driver 8 is moved to the vicinity of the end of the movable bridge girder 1, and one pile 3 is driven (four in the figure), and the connecting panel 21 is driven. A bridge pier part 2 is provided by fixing.

(4) The last sent out movable bridge girder 1 and the existing permanent bridge girder 9
After lifting and lowering the permanent bridge girder 9a placed above with a crane or the like and connecting and fixing it, a new permanent bridge girder is placed on top.

In addition, the deck slab 10 is made of prestressed concrete, precast concrete, etc. on the existing permanent bridge girder 9a.
Build.

By the way, the temporary columns 6.7 attached to the movable bridge girder 1 are made of steel pipes, etc., and as shown in FIG. 5, a pair of groove-shaped rocking rails 11 are attached to the sides.
Elongated holes 12 for pin insertion are bored at predetermined intervals. The temporary pillar 6 is made up of a girder overhang s15 and a support frame 14.

The temporary pillar 7 is supported by the inner side of the movable bridge girder 1 and the support frame 14, respectively.

FIG. 6 is a side view showing an embodiment of the temporary pillar 6 attached to the end of the movable bridge girder 1 in the moving direction.

FIG. 7 is a sectional view taken along line I-1. A hydraulic stay 15 is provided on the upper part of the girder overhang 15, and a locking member 22 is provided on the opposite part of the support girder 14, so that the temporary column 6 can be freely moved up and down and held at any position. It has become. In addition, in the embodiment, the hydraulic stay 15 includes a support ring 16%, a locking pin 17, a hydraulic cylinder 18. It is composed of a locking cylinder 19 and a hard rubber cushioning material 20.

In addition, when driving the temporary columns 6, 7 and permanent piles S into the seabed ground, if necessary, pile holes are excavated in advance using a side pump or an auger, etc., and the driving work is performed.

FIG. 6 is a cross-sectional view of the movable bridge girder 1 at the bridge pier 2. As mentioned above, four rollers 5 are attached to the permanent piles 5.5 and the support beams 4, and the movable bridge girder 1 is attached via the rollers 5 so as to be freely movable (7) in the bridge axis direction.

Figure 9 of the drawing is a cross-sectional view of the bridge pier 2, showing a state in which five bridge girders 9 have been erected, and Figure 10 is a side view thereof. It is fixed with a connecting panel 21 manufactured at the factory to increase horizontal rigidity. As shown in the figure, if a corrugated tube 23 is provided to cover the floor slab 10 if necessary, waves and
The influence of external forces such as wind can be minimized. It is no secret to sequentially install the corrugated tubes 25 on the constructed permanent bridge girder.

(Effects of the Invention) The present invention has the above configuration and can obtain the following effects.

Therefore, there is no need for a marine pile driver, etc., and there is no need to transport materials by sea.

■ When sending out the movable bridge girder, at the same time, the permanent bridge girder (8) Since construction is carried out by drawing out a ■ Movable bridge girders can also be used as permanent bridge girders.

■ For the reasons mentioned above, construction can be carried out easily, and at the same time, the construction period can be significantly shortened and construction costs can be reduced.

[Brief explanation of drawings]

FIGS. 1 to 5 are side views showing an embodiment of the present invention, #!
Figure 4 is #! Figure 5 is a plan view, Figure 5 is a perspective view of the temporary pillar, Figure 6 is a side view of the temporary pillar attached to the movable bridge girder, Figure 7 is a sectional view taken along the line 1-1 in Figure 6, and Figure 8 is a Cross-sectional WJ diagram of the movable bridge girder at the bridge pier. Figure #I9 is a cross-sectional view of the permanent bridge girder at the pier,
@Figure 10 is a side view of Figure 9. 1. Movable bridge girder, 2. Pier, 3. Permanent pile, 4.
Support beam, 5...roller, 6.7...temporary column, 8...pile driver, 9...permanent bridge girder, 10 pot/slab, 11...rocking rail, 12 rumor/elongated hole, 1i...・Overhanging part, 14・
・Support frame. 15...Hydraulic stay, 16...Support ring. 17... Locking pin, 18... Hydraulic cylinder, 19
... Locking cylinder, 20.. Cushioning material, 21.. Connection panel, 22.. Locking member, 25.. Corrugate tube.

Claims (1)

[Claims] (1) Provide a movable bridge girder for work over at least two spans, have a temporary column at the end of the moving direction that can move up and down in the vertical direction, and place a pile driver on the movable bridge girder, and at the opposite end The ends of the permanent bridge girders that are movably placed on the permanent bridge girders that have already been erected are connected, the movable bridge girder is sent out a predetermined length along the existing permanent piles, and the temporary columns are placed on the supporting ground. After supporting the tip of the movable bridge girder in contact with the bridge, the pile driver was moved one foot in front of the end and the permanent pile was driven to form the bridge pier, and the movable bridge girder and the existing main A floating offshore bridge construction method characterized by suspending and connecting and fixing the main bridge girder placed between the bridge girder and the bridge girder, and building the bridge by repeating the same steps in sequence.