JP2002121710A - Method and device for launching erection girder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an erection girder launching method capable of relatively reducing the weight of the erection girders or launching erection girders to be used for bridge girder construction, and capable of reducing weight of a device for moving the girders and simplifying the structure thereof, and capable of reducing the man-hours and cost. SOLUTION: In the bridge girder construction on bridge piers, when launching at least one erection girder stretched between bridge piers so as to provide the bridge girder with a progress of the construction of the bridge girder, an erection girder and a launching erection girder are stretched between the bridge piers in parallel with each other, and an erection girder driving means and a launching erection girder driving means are arranged between the erection girder and the launching erection girder. The erection girder and the launching erection girder are relatively displaced from each other in a progressing direction of the bridge girder construction by the erection girder driving means and the launching erection girder driving means so as to carry the erection girder.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a delivery method and a delivery device for advancing an installation girder used for installing a bridge girder such as a viaduct with the progress of construction work.

[0002]

2. Description of the Related Art FIG. 1 shows the construction work of a bridge girder by a conventional delivery method. FIG. 1 (a) is a side view, and FIG.
(b) is a plan view.

In the figure, two erection girders 2, 2 arranged in parallel are installed on existing piers 1A to 1E, and a hand girder (hand rolling machine) 3, 3 is attached. In the drawing, the construction proceeds from left to right on the page. In addition, the illustrated construction girders 2 and 2
Is movably supported on the piers 1A to 1C by, for example, rollers 4A to 4C.

[0004] On the pier 1E, a driving device 5 for the erection girder 2 is installed. The driving device 5 includes a winch 6 and a wire 7, and the wire 7 connected to the bridge 2 by the winch 6.
, The erection girder 2 is advanced. On the other hand, a rescue device 8 is connected to the rear end of the bridge 2.
The regret device 8 includes a winch 9 and a wire rope 10 and pulls the wire rope 10 connected to the erection girder 2, thereby pulling the erection girder backward, that is, in the direction opposite to the direction in which the erection girder 2 advances. In this way, the bridge girder 2 is prevented from going too far (runaway). Here, it is assumed that two drive devices 5 and two spare devices 8 are installed in correspondence with the installation girders 2 and 2, respectively.

[0005] Here, the construction girders 2 and 2 in the case shown in the figure.
And the installation of the bridge girder are performed in the following procedure. First, the erection girder 2 (and the hand girder 3) is advanced by winding the wire rope 7 by the winch 6 of the driving device. Next, the bridge girder blocks 11, 12 are assembled while moving the bridge cranes 13, 14, which suspend the bridge girder blocks 11, 12, on the erection girder 2, 2, and the bridge girder 15, 16 is formed sequentially. Thereafter, the erection girders 2 and 2 are further advanced, and a new bridge girder is installed between the piers. In addition, erection girder 2,
2 is advanced, as described above,
This prevents the girders 2 and 2 from escaping.

However, such a conventional method has the following problems. First, as the erection girders 2 and 2 move forward, the drive device 5 and the spare device 8 also need to be moved (replaced), and the time, process and personnel required for this are required. In order to support the erection girders 2 and 2 horizontally, a pillow post 17 is installed on the erection girders 2 and 2 as shown in the figure, and when a stay cable 18 is laid, they are bridge crane 13 and 14. Hindering the movement of the bridge girder block 1
When assembling 1 and 12, it is necessary to remove it once. Further, when the span, that is, the distance between adjacent piers is wide (for example, 70 m to 80 m or more),
2 and the hand girders 3 and 3 are also increased in size and weight, and accordingly the drive device 5 and the spare device 8 are also increased in size, so that the time and personnel required for the work are required, which also increases the construction cost. . As a result, it is difficult to achieve labor shortage, shorten the construction period, and improve work efficiency at construction sites, which have recently become problems.

[0007]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention makes it possible to reduce the weight of an installation girder or a hand girder used for installing a bridge girder, and to move these girders. The present invention proposes a method of sending out an installation girder, which can reduce the weight and simplification of the device, and can also reduce the number of steps and costs.

[0008]

That is, the present invention relates to a method of installing a bridge girder on a pier, comprising: installing at least one erection girder spanned between the piers for installing the bridge girder;
When sending out along with the progress of installation of the bridge girder, the erection girder and hand-rolling girder are arranged so as to be bridged between the piers in parallel with each other, and between the erection girder and the hand-rolling girder, Arranging the erection girder driving means and the hand girder driving means for moving forward respectively, the erection girder driving means and the hand girder driving means alternately move the erection girder and the hand girder in the traveling direction of installation of the bridge girder. The erection girder is sent out by relatively displacing the erection girder.

In the method of sending out a construction girder according to the present invention, the construction girder and the hand girder are made independent, and the construction girder is advanced by moving them alternately. Therefore, it is possible to reduce the size (small cross section) and weight of the erection girder and the hand girder. In addition, by providing a driving means for moving these between them, it is not necessary to change the driving means due to the movement of the erection girder as the construction progresses, and it is also possible to reduce the weight of the driving means itself. Become. As a result, it is possible to send out the erection girder with a relatively simple configuration, and it is possible to reduce man-hours and labor, thereby contributing to a reduction in construction cost.

[0010] In a preferred embodiment of the method of sending out a bridge girder according to the present invention, a configuration may be employed in which one hand girder is disposed immediately above or immediately below one bridge girder.
In addition, a configuration may be adopted in which one hand girder is disposed between two bridge girder. Thereby, the effect of the present invention described above can be further ensured.

Further, in the method of sending out a construction girder according to the present invention, the construction girder driving means and the hand girder driving means are fixedly arranged on one of the construction girder and the hand girder, and At the time of forward movement, the first drive means is driven in a direction to advance the bridge girder, and the second drive means is driven in a direction to prevent the escape of the bridge girder. Is characterized in that the second driving means is driven in a direction in which the hand girder advances, and the first driving means is driven in a direction in which the hand girder is prevented from running away. By adopting such a configuration, each drive unit also serves as a spare device, and the entire configuration can be simplified and lightened.

Further, in a preferred embodiment of the method of sending out a bridge girder according to the present invention, the first and second driving means each include a wire for pulling the bridge girder or the hand-rolled girder, And a jack or winch for pulling the erection girder or the hand-rolled girder, and wherein the first and second driving means are for pulling the erection girder or the hand-rolled girder, respectively. A rod and a jack for pulling the erection girder or hand girder by the rod may be provided.
This makes it possible to simplify the configuration of these driving means and to reduce the size and weight.

[0013] The present invention also relates to a delivery device for delivering a bridge girder.

According to the present invention, when a bridge girder is installed on a pier, at least one erection girder placed between the piers for installation of the bridge girder is provided.
An apparatus for feeding the bridge girder along with the progress of installation thereof, wherein a hand-rolled girder arranged in parallel with the bridge girder, and a hand-rolled girder arranged between the bridge girder and the hand-rolled girder, are respectively advanced. Equipped with a construction girder drive and a hand girder drive, by the construction girder drive and the hand girder drive,
The bridging girder is sent out by alternately displacing the bridging girder and the hand girder alternately in the direction of installation of the bridge girder.

According to the present invention, there is provided an apparatus for feeding a bridge girder, wherein the bridge girder and the hand girder are separated from each other, and a driving device for moving the girder between the girder and the hand girder is provided. To move forward. Therefore, the configuration of the entire device can be simplified, and the weight can be reduced. In a preferred embodiment of the construction girder feeding device according to the present invention, one hand extension girder may be arranged directly above or below one construction girder, and one hand girder may be arranged. A configuration may be adopted in which an extension girder is arranged between the two bridge girder.

In the apparatus for feeding a bridge girder according to the present invention, the first and second driving devices are fixedly arranged on one of the bridge girder and the hand-render girder. Driving the first drive device in a direction to advance the erection girder, and driving the second drive device in a direction to prevent the escape of the erection girder;
When the hand girder advances, the second driving device is driven in a direction to advance the hand girder and the first driving device is driven in a direction for preventing the hand girder from escaping. It is characterized by. As a result, each drive device also serves as a spare device, simplifying the entire device.
It is possible to reduce the weight.

In a preferred embodiment of the construction girder sending device according to the present invention, the first and second driving devices each include a wire for pulling the construction girder or the hand girder, and A jack or a winch for pulling the erection girder or hand girder may be provided, and the first and second driving means may include:
A rod for pulling the bridging girder or the hand girder, and a jack for pulling the bridging girder or the girder with the rod, respectively, may be provided. This makes it possible to simplify the configuration of these driving devices and reduce the size and weight.

[0018]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

FIGS. 2A and 2B show the installation work of the bridge girder by the method of sending out the bridge girder according to the present invention. FIG. 2A is a side view, and FIG. 2B is a plan view.

In the figure, on existing piers 21A to 21D,
Two erection girders 22, 22 arranged in parallel are installed,
One hand girder 23 is arranged between 22 and 22. The hand girders 23 are suspended and supported by wires 26 by two gate-shaped hanging carts 24 and 25 that can travel on the bridge girders 22 and 22. In addition, the illustrated erection girders 22, 22 are movably supported on the piers 21A to 21C by, for example, support columns 27A to 27D. These support columns 27A to 27D are provided with rollers for movably supporting the erection girder 22, 22 and the hand girder 23, and temporary receiving equipment for fixing the erection girder 22, 22 and the hand girder 23, respectively. Have been. In addition, on the bridge girder 30 erection girder 22,22
A supporting truck 28 that moves forward with the vehicle is also provided. Also in this drawing, the construction proceeds from left to right on the paper.

A driving device 31 is provided at the front end of the bridge girder 22. The driving device 31 includes two hydraulic jacks 32A and 32B and wires 33A and 33B pulled by the hydraulic jacks 32A and 32B, as described later. Girder
23 is relatively displaced in the construction direction,
Feeding of 22, 22 and hand girder 23 is performed. This procedure will be described later in detail.

FIGS. 3 and 4 show the appearance of the erection girders 22, 22, FIG. 3 (a) is a side view, FIG. 3 (b) is a plan view, and FIG. 4 is a front view. As shown,
22 has a box girder shape in which a number of steel shapes are assembled in a truss shape. 5 and 6 show the appearance of the hand girders 23. FIG. 5 (a) is a side view, FIG. 5 (b) is a plan view,
FIG. 6 shows a front view. As shown in the drawing, the hand spread girder 23 includes a main body 23A and a tip portion (hand spread portion) 23B. Like the bridge girder 22, both have a box girder shape in which a number of mold steels are assembled in a truss shape. Note that the shapes and structures of the erection girder 22 and the hand-girder girder 23 are basically the same as those in the related art.

FIGS. 7 and 8 show the appearance of a suspension cart 24 that suspends and supports the hand girders 23. FIG. 7 is a view seen from the rear, and FIG. 8 is a view seen from the side. It is. The suspension trolley 24 includes a beam member 34 bridged between the erection girders 22, 22, and the erection girder.
It has traveling carts 35A and 35B that travel on 22,22. When the wheels 36 of the traveling carts 35A and 35B travel on the rails 37 on the upper surface of the erection girder 22, the suspension cart 24 moves. Wire clamps 38A and 38B are installed on the beam member 34, and the wire 2
6 and 26 are suspended, and one end thereof is connected to the hand girder 23. As a result, the hand girders 23 are supported by the suspension carts 24. Two tension jacks 39A and 39B are provided between the suspension trolley 24 and the hand-rolled girder 23.
23 In addition to assisting the support, the suspension height is adjusted.

FIGS. 9 and 10 show the appearance of another hanging cart 25 for suspending and supporting the hand girders 23. FIG. 9 is a view seen from the rear, and FIG. FIG. The suspension trolley 25 also has a beam member 40 spanned between the erection girders 22, 22 and traveling trolleys 41A, 41B running on the erection girders 22, 22.
Equipped. When the wheels 42 of the traveling carriages 41A and 41B travel on the rails 43 on the upper surface of the erection girder 22, the suspension carriage 25 moves. Wire clamps 44A and 44B are installed on the beam member 40,
Wires 26 are suspended from here, and one end thereof is connected to the hand girder 23. As a result, the hand girders 23 are supported by the suspension carts 25.

FIGS. 11 to 13 schematically show the structure of the driving device 31. FIG. 11 is a side view, FIG. 12 is a plan view, and FIG. 13 is a front view. The driving device 31 includes a stage 45 fixedly supported on the erection girders 22, 22, two hydraulic jacks 32A, 32B arranged on the stage 45, a hydraulic pump 46 for operating these hydraulic jacks, and a hydraulic pump 46. It comprises a generator 47 and a controller 48 for supplying electric power for driving the pump 46. The stage 45 is movable by running wheels 50, 50 provided on the lower surface on rails 49, 49 provided on the hand girders 23. As a result, the erection girder 22,
22 and hand girder 23 can be relatively displaced.

As shown, two hydraulic jacks 32A, 2A
3B are installed in opposite directions. This is because the direction in which a wire (not shown) is pulled is different when the bridge girder 22 and the hand girder 23 are respectively advanced as described later.

FIG. 14 shows a procedure of installing a bridge girder using the method according to the present invention and sending out an erecting girder and a hand girder therefor. Hereinafter, this procedure will be described.

First, as shown in FIG.
Consider the case where a bridge girder is installed between 61E. In the figure, each pier 61A
~ 61E has support columns 62A for supporting the erection girder described later ~
62E is provided, and bridge girders 63 and 64 are already installed on pier 61A. Here, as shown in FIG.
-62E are also provided with rollers for movably supporting the erection girder and the hand girder, and temporary receiving equipment for fixing.

The erection girder 65 is installed on support columns 62A to 62C,
The hand girder 66 is connected to the suspension bogies 67 and 68 on the
Hanged through 69. A drive device 70 is provided at the front end of the bridge girder 65. In the figure, the installation girder
Although only one bridge 65 is shown here, it is assumed here that two bridge girders 65 are arranged in parallel, and one hand girder 66 is suspended between them, as in FIG.

Next, as shown in FIG. 14 (b), the driving device 70 is operated while the erection girder 65 is stationary, that is, fixed on the support columns 62A to 62C using the above-mentioned temporary receiving equipment. Girder
66 is advanced so that its front end is supported by the support pillar 62D.

Further, as shown in FIG. 14 (c), the hand girders 66 are further advanced so as to be supported by the supporting columns 62C and 62D, and are temporarily fixed by using the temporary receiving facilities provided on these supporting columns. . After that, bridge bridge blocks 7
3 and 74 are suspended, the bridge cranes 71 and 72 are moved on the erection girder 65, and the bridge girder blocks 73 and 74 are transported to the installation position of the bridge girder, here the pier 61B, as shown in FIG. 14 (d). , Bridge girder 7
Assemble 6, 77. After that, on the bridge girder 64 near the rear end of the bridge girder 65, a support cart 75 that moves while supporting the bridge girder 65 when the bridge girder 65 moves is arranged.

Finally, the driving device 70 is operated, and FIG.
As shown in the figure, the erection girder 65 is advanced this time,
Support and secure at ~ 62D. The fixing of the erection girder 65 uses temporary receiving equipment provided on each of the support columns 62B to 62D. By repeating the above procedure, the bridge girder is sent out and a new bridge girder is installed.

FIG. 15 shows an operation procedure of the driving device in sending out the bridge girder and the hand girder. Hereinafter, the procedure will be described. In the drawings, for the sake of simplicity, constituent members and the like are simplified and some parts are omitted. The procedure described here substantially corresponds to the procedure described with reference to FIG. 14, and the reference numerals of the respective components are the same as those in FIG.

Driving device provided at the front end of the bridge girder 65 shown
70 comprises hydraulic jacks 71, 72 and wires 73, 74 respectively drawn by these jacks, and wheels 75,
This makes it possible to move relatively on the girder 66. Also, one end of the wire 73 has a rear end 66B
Has one end connected to the front end 66A of the hand girder 66, respectively.

First, as shown in FIG. 15 (a), the bridge girder 65 is fixed (stationary) on the support columns 62A to 62C, while the hand girder 66 is movable on the support columns 62C and 62D. It is in a supported state. From this state, the hydraulic jack 71 is operated to pull the wire 73 as shown in FIG. 15 (b). At this time, the other hydraulic jack 72 is also operated at the same time, and the wire 74 is pulled rearward between the hydraulic jack 72 and the front end 66A of the hand spread girder 66, that is, in the direction opposite to the direction in which the hand spread girder 66 advances. And be nervous.

Then, one end of the wire 73 is at the rear end of the hand-rolled girder 66.
As shown in FIG. 15 (c), since the hand girder 66 is movably supported by the support columns 62C and 62D, the hand girder 66 moves forward with respect to the erection girder 65 as shown in FIG. I do. Where the figure
As shown in FIG. 15 (b) and FIG. 15 (c), the wire 74 is also pulled rearward between the hydraulic jack 72 and the front end 66A of the hand-rolling machine 66 and is in a tension state. The wire 72 and the wire 74 function as a spare device, and prevent the hand girder 66 from being retreated.

Next, as shown in FIG. 15D, the erection girder 65 is made movable on the support columns 62A to 62C.
66 is fixed to the supporting columns 62C and 62D. Then, when the hydraulic jack 72 is operated and the wire 74 is pulled, the wire 74 has one end connected to the front end 66A of the hand spread girder 66, and the erected girder 65 is movably supported by the support columns 62A to 62C. 15 (e) and 15 (f), the bridge girder 65 advances with respect to the hand girder 66.

In this case as well, as shown in FIGS. 15 (e) and 15 (f), while the wire 74 is pulled by the hydraulic jack 72, the other hydraulic jack 71 is operated to move the wire 74.
73 is pulled forward between the hydraulic jack 71 and the rear end 66B of the hand-rolled girder 66, that is, in the traveling direction of the bridge girder 65, so as to be tensioned. As a result, the hydraulic jack 71 and the wire 73
Works as a spare device, and can prevent the escape of the erection girder 65.

By alternately moving the bridge girder 65 and the hand girder 66 alternately according to the above-described procedure, the bridge girder 65 and the hand girder 66 are sent out when the bridge girder is installed.

As described above, according to the method of sending out a construction girder according to the present invention, the construction girder and the hand girder are separated and arranged, and the delivery is performed by alternately displacing the two. . Therefore, the weight of the erection girder and the hand girder can be reduced, and the construction of a long span bridge or the like can be supported.

Further, since the driving device for sending out is provided between the bridge girder and the hand girder and has the function of a spare device, the entire configuration of the equipment including the bridge girder is simplified. This can contribute to not only labor saving but also construction cost reduction.

The present invention is not limited to the above embodiment. For example, the number of the erection girder may be one, and the hand-rolled girder may be arranged directly above or below it.

As the driving device, a winch other than the hydraulic jack can be used, and a steel rod or the like can be used instead of the wire.

[Brief description of the drawings]

FIG. 1 is a side view showing a construction work of a bridge girder by a conventional method of sending out a construction girder.

FIG. 2 is a side view showing an installation work of a bridge girder according to the method of sending out a bridge girder according to the present invention.

FIGS. 3A and 3B are a side view and a plan view showing an appearance of a bridge girder according to the present invention.

FIG. 4 is a front view showing an external appearance of a bridge girder according to the present invention.

FIG. 5 is a side view and a plan view showing the appearance of a hand-rolled girder according to the present invention.

FIG. 6 is a front view showing the appearance of a hand-rolled girder according to the present invention.

FIG. 7 is a front view showing the appearance of the rear suspension cart.

FIG. 8 is a side view showing the appearance of the rear suspension cart.

FIG. 9 is a front view showing the appearance of the front suspension cart.

FIG. 10 is a side view showing the appearance of the front suspension cart.

FIG. 11 is a side view showing a configuration of a driving device.

FIG. 12 is a plan view showing a configuration of a driving device.

FIG. 13 is a front view illustrating a configuration of a driving device.

FIG. 14: Installation of a bridge girder using the method according to the invention;
It is a figure which shows roughly the sending-out procedure of the erection girder and the hand girder for that.

FIG. 15 is a view schematically showing an operation procedure of a driving device in sending out the erection girder and the hand girder.

[Explanation of symbols]

 1,21,61 Bridge piers 2,22,65 Bridge girder 3,23,66 Hand girder 4 Roller 5,31,70 Drive 6,9 Winch 7,10,26,33,69,73,74 Wire 8 Equipment 11, 12, 73, 74 Bridge girder block 13, 14, 71, 72 Bridge crane 15, 16, 29, 30, 63, 64 Bridge girder 17 Pilon column 18 Stay cable 24, 25, 67, 68 Suspension bogie 27, 62 Support pillar 28,75 Support trolley 32,71,72 Hydraulic jack 34,40 Beam member 35,41 Traveling trolley 36,42,50,75 Wheel 37,43,49 Rail 38,44 Wire clamp 39 Tension jack 45 Stage 46 Hydraulic Pump 47 Generator 48 Controller

Claims (12)

[Claims] In the installation of a bridge girder on a pier, when sending out at least one erection girder placed between piers for installation of the bridge girder along with the progress of the installation of the bridge girder, A first drive unit and a second drive for arranging the erection girder and the hand-rolling girder so as to extend between the piers in parallel with each other, and for advancing them between the erection girder and the hand-rolling girder, Means for disposing the erection girder by alternately displacing the erection girder and the hand girder alternately in the traveling direction of the installation of the bridge girder by the first and second driving means. The method of sending out the construction girder. 2. The hand-held girder is disposed immediately above or immediately below one of the bridge girder.
How to send out the erection girder described. 3. The method according to claim 1, wherein one of the girders is disposed between two of the girders. 4. The first and second driving means are fixedly arranged on one of the bridge girder and the hand girder, and when the bridge girder is advanced, the first driving means is connected to the first girder. The erection girder is driven in a direction of moving forward, and the second drive means is driven in a direction for preventing the escape of the erection girder. The bridge girder according to any one of claims 1 to 3, wherein the girder is driven in a direction in which the girder advances, and the first driving means is driven in a direction for preventing the hand-rolling girder from escaping. How to send out. 5. The apparatus according to claim 1, wherein the first and second driving means each include a wire for pulling the erection girder or the hand-rolled girder, and a jack or winch for pulling the erection girder or the hand-rolled girder with the wire. The method according to claim 5, further comprising the step of: 6. The first and second drive means each include a rod for pulling the erection girder or the hand girder, and a jack for pulling the erection girder or the hand girder with the rod. 6. The method according to claim 5, wherein: 7. An apparatus for, when installing a bridge girder on a pier, sending out at least one erection girder placed between bridge piers for installation of the bridge girder as the installation of the bridge girder proceeds. And a first drive device and a second drive device, respectively, which are disposed between the erection girder and the hander girder, and which respectively advance these, and which are arranged in parallel with the erection girder. The first and second drive units are configured to send out the erection girder by alternately displacing the erection girder and the hand girder alternately in the traveling direction of installation of the bridge girder, A feeder for the erection girder. 8. The apparatus according to claim 7, wherein the hand girder is disposed immediately above or immediately below one of the bridge girders. 9. The apparatus according to claim 7, wherein the hand girder is disposed between two of the bridge girder. 10. The first and second driving devices are fixedly arranged on one of the erection girder and the hand girder, and when the erection girder advances, the first driving device is connected to the first girder. Driving the erection girder in the forward direction and driving the second driving device in a direction for preventing the erection girder from escaping; The bridge girder according to any one of claims 7 to 9, wherein the girder is driven in a direction in which the girder advances, and the first driving device is driven in a direction for preventing the hand-rolling girder from escaping. Feeding device. 11. The first and second driving devices each include a wire for pulling the erection girder or the hand girder, and a jack or a winch for pulling the erection girder or the hand girder with the wire. The delivery device for a bridge girder according to claim 10, characterized by comprising: 12. The first and second driving devices each include a rod for pulling the erection girder or the hand girder, and a jack for pulling the erection girder or the hand girder with the rod. 2. The method according to claim 1, wherein
Feeding device for erection girder described in 0