JPH0913329A - Installation method of bridge - Google Patents

Abstract

PURPOSE: To install a bridge even in a case that roads and working area are not secured at the bank side of a waterway and a large capacity floating crane can not be used. CONSTITUTION: A waterway is used for the transportation course of bridge materials. A pair of bridge piers 3, 4 are erected with a distance in the central span and main girders 19, 20 are constructed on the bridge piers 3, 4. The upper face of the main girders 19, 20 is used for the working space to construct main girders 24, 25 of the side spans while additionally connecting the girder members from the bridge piers 3, 4 to both banks of the waterway. Next, each end of the main girders 24, 25 is connected to each end of the main girders 19, 20, while hanging down the main girders 24, 25 of the side spans constructed. And the other respective ends are supported on the abutments 1, 2 of respective banks to install the bridge girders. Next, the main girder for the central span is brought by a barge 31 into the central span and the main girders 19, 20 of the central span are hoisted by cranes 32, 33 arranged on the girders. The main girders 24, 25 of the side spans and the main girder of the central span are transferred to the middle side to join them together and install the bridge.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bridge erection method, and more particularly to a bridge erection method in a state where land roads are not secured.

[0002]

2. Description of the Related Art There are various methods for constructing bridges, but recently, girder blocks spanning abutments have been changed to large blocks,
There is a method in which a floating crane with a large capacity is used to erection between abutments at once. According to this method, the girder block has a weight of 5000 to 6000 tons. There is also a method to extend and extend the bridge girder from the shore side.

[0003]

The bridge construction method according to the above-mentioned conventional technique can be applied to rivers capable of navigating large capacity floating cranes, bridges in ports and straits, but rivers in which bridges have already been constructed, If one more bridge is to be erected in the port, it is not possible to construct a large girder block at once if it is not possible to navigate the high capacity floating crane due to the height of existing bridges, rivers and the depth of the port. It is possible.

Further, in the method of erection while extending the bridge girder from the shore side, road construction and bridge erection are often carried out in parallel at a seaside landfill site, and the road and work area for transporting the bridge girder precedes the shore side. It is not feasible because it cannot be secured.

Therefore, an object of the present invention is to provide a bridge construction method capable of efficiently constructing a bridge without securing a road and a working area on the shore and without using a large capacity floating crane. To provide.

[0006]

According to the first aspect of the present invention,
The waterway is used as a transportation path for the bridge members, at least a pair of piers are erected with a space between the center diameters, a main girder is constructed on the pier, and the upper surface of the main girder is used as a work space for the waterway from the pier. A side span main girder is constructed while adding girder members toward both banks, and then one end is connected to the main girder while suspending the constructed side span main girder, and the other end is connected to both sides of the water channel. It is characterized in that it is supported and bridged on the abutment on the shore.

According to a second aspect of the present invention, the water channel is used as a transportation path for the bridge member, and the main girder and the main girder are provided between at least a pair of piers standing upright with a space between the center diameters and both banks of the water channel. The side span main girders on both sides are installed, then the center span main girder is carried in by a barge, and then the carried-in center span main girder is provided on the main girder. It is characterized in that it is lifted by a lowering device, and then the side span main girder and the main girder are moved in the center direction to be joined to the center span main girder.

According to a third aspect of the present invention, the water channel is used as a transportation path for the bridge member, at least a pair of bridge piers are erected at intervals of a center diameter, and a main girder is constructed on the pier. The side span main girder is constructed while connecting the girder members from the bridge pier toward both banks of the waterway with the upper surface of the work place as the work space, and then the one end of the main girder is suspended while suspending the constructed side span main girder. And bridge the other end supported by abutments on both sides of the waterway, then carry in the center span main girder by barge, and then carry in the carried center span main girder. Characterized by being hoisted by a hoisting / lowering device provided on the main girder, and then moving the side span main girder and the main girder in the central direction to join the central span main girder Is.

[0009]

[Function] The waterway is used as a transportation route, and the bridge member is transported by a barge (carrier). A floating crane floating in a waterway is used to mount the members.

A main girder is first constructed on a bridge pier constructed in a waterway leaving a center span, and a steel deck is stretched on the upper surface of the constructed main girder to form a bridge surface. The main girder of the side span is used for the construction as it is sent toward both banks. After that, the main span girder of the center span is inserted in the center span to build the bridge.

When the bridge pier, main girder and side span main girder are constructed, the center span main girder transported by barge is lifted by the lifting / lowering device provided on the main girder, and the main girder and side girders on both sides are lifted. Insert between main girders. Next, the side span main girders and the main girders on both sides are moved in the center direction to be joined to the center span main girder. Thus, the bridge is erected. In this way, by making the distance between the main girders on both sides larger than the size of the center span main girder, the insertion space for the center span main girder is secured, and the thermal expansion of the side span main girders results in the central diameter. The main girder does not become uninsertable.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A bridge construction method according to an embodiment of the present invention will be described in the order of steps with reference to the following drawings.

1 to 15 are drawings showing an embodiment of the present invention, FIG. 1 is a side view showing a construction state of piers and temporary piers, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is on a temporary pier. 4 is a side view showing a state in which the footing is assembled, FIG. 4 is a plan view of FIG. 3, FIG. 5 is a side view showing a state of constructing a main girder on a pier, FIG. 6 is a plan view of FIG. 5, and FIG. 6 is a side view showing the formation state of the side span main girder, FIG. 9 is a plan view of FIG.
10 is a side view showing an installed state of the side span main girder, FIG. 11 is a side view showing an installed state of the side span main girder, FIG. 12 is a plan view showing an installed state of the side span main girder, and FIG. 14 is a side view showing the installed state of the central span main girder, and FIG. 15 is a plan view of FIG.

First, as shown in FIGS. 1 and 2, a temporary vent foundation work is constructed. 1, 2 are abutments constructed on the shore side of the waterway, and 3 and 4 are a pair of piers constructed underwater. W is the water surface, and 5 is the water bottom.

6, 7, 8, 9, 10, 11, 12, 13
Is a temporary pier consisting of piles that construct a temporary vent.
Each of the temporary bridge piers has a plurality of bridge piers, for example, 6a,
It is arranged like 6b, 6c and 6d. In addition, the temporary bridge pier is constructed by placing piles using the crawler crane 15 on the temporary pier 14. Further, the temporary bridge pier 13 on the opposite shore is also constructed by placing piles using the ground crawler crane 16.

Temporary bridge piers 7, 8, 9, 10, 11, 12
Is constructed by placing pile materials carried by a barge (carrying ship) 18 for carrying vent materials using a floating crane 17 in the same arrangement and method as described above.

Next, as shown in FIGS. 3 and 4, a vent is constructed on each temporary pier by the following procedure. Temporary bridge piers 6 and 13 use crawler cranes 15 and 16,
The temporary bridge piers 7, 8, 9, 10, 11, 12 use the floating crane 17 and barge 18,
For example, in the temporary bridge pier 6, each pile 6a adjacent in the bridge width direction,
The heads of 6b, 6c and 6d are connected by a pile head footing 6A to form a vent. Similarly, the other temporary piers 7, 8,
9, 10, 11, 12, 13 are also pile heads, and pile head footings 7A, 8A, 9A, 10A, 11A, 12A, 13A
And connected to construct a vent. From the above, the temporary bridge piers 6, 7, 8, 9, 1 which are the main girders and the side span main girders are received.
0, 11, 12, and 13 are completed.

The temporary bridge piers 9 and 10 were provided with a caution illumination light, a work area display light, and a buoy for the sailing ship.

Next, as shown in FIGS. 5 and 6, main girders 19 and 20 are constructed on the piers 3 and 4. This main girder 1
9 and 20 are composed of four box girders, and will be a work place for splicing and lateral movement of girders for constructing a side span main girder on the shore side in the next process. Attach a shoe to the piers 3 and 4 in advance.

The main girders 19 and 20 of the piers 3 and 4 are constructed by using a floating crane 21 having a larger capacity than the floating crane 17 described above. First, a block is hung between the pier 3 and the temporary pier 8, and the pier 3 side is supported by the gear. The next block is added between the temporary bridge piers 8 and 7 while being added, and then the next block is added between the bridge pier 3 and the temporary bridge pier 9 to complete one main girder 19a.
By the same method, the main girder 20a is also completed on the pier 4 side.
The completed position of the main girders 19a and 20a is shown in FIG.
This is the position of the main girders 19b and 20b.

FIG. 7 shows a method of constructing the main girder 19. First, the girder 19a is moved from the boom reach limit of the floating crane 21 to the receiving beams 7B, 8 on the temporary bridge piers 7, 8, 9.
B, 9B, and similarly, a girder 19b is constructed, and after being connected to each other by a transverse girder 19e in the width direction, both the two rows are moved in the width direction of the main girder 3 (FIG. 7A). Next, the integrated girder 19
a and the girder 19b are received by a jack (not shown), the receiving girders 7B, 8B and 9B are removed, and the main girder 19a and the main girder 19b are lowered by the descending action of the jack, and positions corresponding to the temporary bridge piers 7a, 8a, 9a Place on top. Next digit 19c
The temporary pier 9c using the floating crane 21
After building above, it is connected to the main girder 19b at the horizontal girder 19f.
Next, the main girder 19d is constructed on the temporary bridge pier 9d by using the floating crane 21, and the girder 19c with the transverse girder 19g.
Integrated with. 4 digits 19a, 19b, 19c, 19
d is integrated, pipes for water, gas, electricity, etc. are laid in the lower part, and a steel deck as a work surface is formed in the upper part (Fig. 7).
B).

The main girder 20 on the pier 4 is also constructed by the same method as described above. The above-mentioned lateral movement of the main girders 19 and 20 is performed by a known method using rails installed on the temporary bridge piers 7 and 9, jacks for upward and downward movement, and lateral pushing jacks.

In the above description, when the main girders 19 and 20 are constructed, the floating crane 21 is restricted in position and the floating crane 21 is in a fixed position. However, if there is no restriction in position. , The floating crane 21 is located on the side opposite to the above-mentioned position by the girder 19
a and girder 19b may be constructed and then moved to the positions described above to construct girder 19c and girder 19d, in which case the main girder may be constructed without lateral movement of the girder. it can. The floating crane 21 needs a rope for mooring it at a fixed position, and the above-mentioned movement is possible if there is no obstacle in the area of the rope.

In FIGS. 8 and 9, the main girders 19 and 2 are shown.
On 0, the side span main girders 24, 25 are built. When the main girders 19 and 20 of the piers 3 and 4 are completed, install the crawler cranes 22 and 23 on the abutments 1 and 2 on both banks,
Prepare for installation of the side span main girders 24, 25. Side span main girder 2
4 consists of 4 columns, of which 2 columns 24a, 2
4b is assembled on the carriage of the main girder 19 by attaching the girder block lifted by the floating crane 21 and the hand-pulling machines 24e and 24f at the ends. The other side span main girder 25 is similarly assembled.

After adjusting the camber, the side span main girders 24a and 24b are integrated by bolting the cross girder, and every time a girder block is added on the main girder 19, a known girder direction feed jack is directed toward the abutment 1 direction. (Not shown).

In FIG. 10, the side span main girders 24a, 24
b is the crawler crane 22 when it reaches the abutment 1.
While the tip is supported by the side girder main girder 24 at the position where the girder end is moved further toward the abutment 1 and the girder end reaches the lumber of the abutment 1.
a and 24b for lifting and lowering devices (hereinafter referred to as "lifting and
(Hereinafter referred to as "falling jack") 26, 27, remove the hand extenders 24e, 24f and the receiving girders 7B, 8B, 9B, and gradually lower the right end of the side span main girders 24a, 24b. To the bridge of the abutment 1 while connecting them to the bridge and applying a bending moment and a shearing force to the side span main girders 24a, 24.
Support the left end of b.

11 and 12, after installation of the side span main girders 24a and 24b, the side span main girders 24a and 24b are installed.
A rail is laid on the rail b and the side span main girder 2 is placed on the rail.
4c and 24d are extended, and are extended toward the abutment 1 direction.

The side span main girders 24c and 24d are laterally moved to a position corresponding to the main girders 19a and 19b, and again hung on the other lifting / lowering jacks 26a and 27a to be manually extended. 24e, 24f are removed and gradually lowered, and the right end of the side span main girders 24c, 24d is connected to the main girder 19 to apply a bending moment and a shearing force to the deck of the abutment 1 while maintaining the side span main girder. The left ends of 24c and 24d are supported.

When the side span main girders 24 are connected to each other,
Pipes are laid and a steel deck is stretched on the upper surface. The side span main girder 25 on the abutment 2 side of the opposite bank is also lifted and lowered jack 2
Constructed similarly using 8,29.

As for the construction method of the side span main girders 24 and 25, like the main girders 19 and 20, if the floating crane 21 can be moved, the bridge width can be constructed on each side.

FIG. 13 shows a method of constructing the central span main girder. Generally, the side span main girders 24 and 25 are thermally expanded depending on the temperature. Therefore, when the side span main girders 24 and 25 are completed, the side span main girders 24 and 25 together with the main girders 19 and 20 are abutted. 1 and the abutment 2 are retreated by vertical moving jacks (not shown) to secure an insertion space for the center span main girder 30 (also referred to as bridge block).

When the central span main girder 30 is transported by a large barge 31 and stops at the center span position of the bridge, the main girders 19 and 2
It is locked by the hoisting ropes of the plurality of hoisting / lowering jacks 32, 33 (hoisting / lowering device) on the 0, and moved upward, so as to be aligned with the upper surfaces of the main girders 19, 20. After that, the side girder main girders 24 and 25, which had been retracted, are replaced with the main girder 1
Along with 9 and 20, move them toward the center again, and the main girder 1
The bridge construction is completed by joining 9 and 20 to the central span main girder 30.

In the above description, the side span main girders 24, 2
5 and main girders 19 and 20 are temporarily retracted, and then
Although the method of moving in the central direction has been described, the side span main girders 24, 25 and the main girders 19, 20 may be constructed in the retracted position from the beginning.

The central span main girder 30 is provided with lifting / lowering jacks 32, 3 as shown in FIGS.
Although the hoisting / falling jacks 32 and 33 have a large capacity, the hoisting / falling jacks 32 and 33 may be collectively lifted.

Furthermore, if piping or the like is laid in advance on the center span main girder 30, on-site work can be omitted.

The temporary bridge piers 6, 7, 8, 9, 10, 1
1, 12, 13 will be gradually removed as the bridge progresses.
Further, it is desirable to use a known jack using a PC cable as an example of a jack for lifting and lowering a girder.

[0037]

Industrial Applicability As described above, the present invention is a large block bridge construction method using a water channel for transporting bridge members and using a floating crane, which brings about the following industrially useful effects.

[0038] Since a main girder is formed on the bridge pier, a work space is constructed on the main girder, and then a side span main girder is constructed toward both banks from the construction, the construction is carried out inexpensively. There is an advantage.

Further, since it becomes possible to construct a bridge in a state where the road on the land side is not secured, the construction period for access is shortened.

Further, by retracting the side span main girders to the shore side, even if thermal expansion of the side span main girders occurs, the center span main girder can be easily inserted.

[Brief description of the drawings]

FIG. 1 is a side view showing a construction state of a bridge pier and a temporary bridge pier according to an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a side view showing a state in which the footing is assembled on the temporary bridge pier according to the embodiment of the present invention.

FIG. 4 is a plan view of FIG. 3;

FIG. 5 is a side view showing a state in which a main girder is built on a pier according to the embodiment of the present invention.

FIG. 6 is a plan view of FIG. 5;

FIG. 7 is a view on arrow AA of FIG. 6;

FIG. 8 is a side view showing a formed state of the side span main girder according to the embodiment of the present invention.

FIG. 9 is a plan view of FIG.

FIG. 10 is a side view showing an installed state of the side span main girder according to the embodiment of the present invention.

FIG. 11 is a side view showing an installed state of the side span main girder according to the embodiment of the present invention.

FIG. 12 is a plan view showing an installed state of the side span main girder according to the embodiment of the present invention.

FIG. 13 is a side view showing an installed state of the center span main girder according to the embodiment of the present invention.

FIG. 14 is a side view showing an installed state of the center span main girder according to the embodiment of the present invention.

FIG. 15 is a plan view of FIG.

[Explanation of symbols]

1 Abutment 2 Abutment 3 Pier 4 Pier 5 Water bottom 6 Temporary Pier 7 Temporary Pier 8 Temporary Pier 9 Temporary Pier 10 Temporary Pier 11 Temporary Pier 12 Temporary Pier 13 Temporary Pier 14 Temporary Pier 15 Crawler Crane 16 Main Crane Crawler Crane 16 Crawler Crane Girder 19a, 19b, 19c, 19d Main girder 19f, 19g Transverse girder 20 Main girder 21 Floating crane 22 Crawler crane 23 Crawler crane 24 Side span main girder 24a, 24b, 24c, 24d Girder 24e, 24f Hand extender 25 Side diameter Main girder 26 Lifting / falling jack (lifting / lowering device) 27 Lifting / falling jack (lifting / lowering device) 28 Lifting / lowering jack (lifting / lowering device) 29 Lifting / lowering jack (lifting / lowering device) 3 Center span main beam 31 barge 32 lifting-lowering jacks (lifting-lowering device) 33 lifting-lowering jacks (lifting-lowering device) 7A, 8A, 9A, 10A, 11A, 12A, 13A
Pile head footing 7B, 8B, 9B Receiving beam W Water line surface 9

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Sunahara 1-2-2 Marunouchi, Chiyoda-ku, Tokyo Inside Nihon Kokan Co., Ltd. (72) Koichiro Ohno 2-4-2-4 Ariake, Koto-ku, Tokyo Tokyo Inside Seaside Fukutoshin Construction Co., Ltd. (72) Inventor Masaoki Ikeda 1-19-10 Mori, Koto-ku, Tokyo Inside Ishikawajima-Harima Heavy Industries Co., Ltd. (72) Inventor, Yasuyuki Watanabe 12 Nishiki-cho, Naka-ku, Yokohama, Japan Mitsubishi Heavy Industries Yokohama Works

Claims (3)

[Claims] 1. A waterway is used as a transportation path for a bridge member, at least a pair of bridge piers are erected at intervals of a center diameter, a main girder is constructed on the pier, and an upper surface of the main girder is used as a work space. A side span main girder is constructed while adding girder members from the pier toward both banks of the waterway, and then one end is connected to the main girder while suspending the constructed side span main girder, and the other end A method of constructing a bridge, characterized in that the bridge is supported and bridged on both sides of the waterway. 2. A main girder and side spans on both sides thereof between at least a pair of bridge piers standing upright with a space between the center diameters and both banks of the water channel, using the water channel as a transportation path for the bridge member. The main girder is erected, then the central span main girder is carried in by a barge, then the central span girder that has been carried in is hoisted by the lifting and lowering device provided on the main girder, and then A method of constructing a bridge, characterized in that the side span main girder and the main span girder are moved in the central direction and joined to the central span main girder. 3. A waterway is used as a transportation path for bridge members, at least a pair of bridge piers are erected at intervals of a center distance, a main girder is constructed on the pier, and an upper surface of the main girder is used as a work space. A side span main girder is constructed while adding girder members from the pier toward both banks of the waterway, and then one end is connected to the main girder while suspending the constructed side span main girder, and the other end Is supported by bridge abutments on both sides of the water channel and then bridged, and then the center span main girder is carried in by a barge,
Next, the carried-in central span main girder is hoisted by a hoisting / lowering device provided on the main girder, and then the side span main girder and the main girder are moved in the central direction to move the center span main girder. A bridge construction method characterized by being joined to a girder.