JP2000265418A - Bridge segment constructing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bridge segment constructing machine which eliminates the necessity of a large size girder for the construction in a large span interval, can perform construction for the large span interval even if an interval which the girder could not reach is left not constructed, can turn round the construction direction at will, can move the girder skipping an interval left not constructed can perform construction even if a building exists close to a curved interval and can perform construction without making large girder reaction work on a bridge body. SOLUTION: This bridge segment construction machine includes a pair of guide arms 18-1 and 18-2, which has length enough to be constructed between a bridge piers 1-2 and 1-3 and moves in an axial direction, and a bridge segment construction girder 7, which moves on a pair of guide arms. Then, mechanisms which are connected to and separated from each other at any angle in a horizontal face, are provided on the end sections of a pair of guide arms, and the bridge segment construction girder 7 moves along a pair of the guide arms, and a bridge is constructed with bridge segments are connected between bridge piers.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an erection machine used for erection work of a bridge, and more particularly to a bridge segment erection machine in which a bridge segment is lifted by a girder.

[0002]

2. Description of the Related Art In FIG. 3, reference numerals 1, 1-1 and 1-2 indicate bridge piers,
Reference numerals 3,3-1,3-2 on the piers 1,1-1,1-2
Slide base 3,3-1,3-
The support bases 5, 5-1 and 5-2 are provided on 2 respectively.

[0003] Reference numeral 7 denotes a girder.
Is supported by the support bases 5 and 5-1, and is bridged over the piers 1 and 1-1. Reference numeral 8 denotes a hoist, and the hoist 8 moves the lower surface of the girder 7 in the direction of the bridge axis of the piers 1, 1-1, 1-2 and in the direction perpendicular to the bridge axis to lift the bridge segment of 9.

[0004] In FIG. 3, the construction is proceeding from the left side to the right side, and after the work of pouring concrete into the joints and inserting the PC cable is performed, the bridge segment 9 that has been lifted is tightened and tightened. Is done. Pier 1,
After the construction between 1-1 and 1 is completed, the girder 7 is moved rightward in FIG. 3 together with the hand-rolling machine 10 and is bridged over the piers 1-1 and 1-2.

[0005] Next, Figs. 4, 5, 6 and 7 illustrate a construction procedure between the piers 1 and 1-1 whose span is considerably large as compared with the others. In FIG. 4, after the construction is completed from the right side to the pier 1-1, the cantilevered portion 12-1 is protruded from the pier 1-1 toward the pier 1. Cantilever installation part 12
-1 lifts the bridge segments 9 and connects them to the pier 1
And formed by tightening with a PC cable.

Further, the girders 7 are once dismantled and reassembled to move them to the left side in FIG. 5, that is, to the piers 1-1 and 1-0, and then work toward the right side in FIG. Proceed and project the cantilevered portion 12 from the pier 1 toward the pier 1-1. Supports 5-j and 5-k are provided on the protruding tips of the cantilevered portions 12 and 12-1, respectively, as shown in FIG. 6, and as shown in FIG.
After the girder 7 is bridged over and placed in a double-supported state, construction is performed between the remaining cantilevered erection portions 12 and 12-1.

FIGS. 8, 9, 10, and 11 illustrate a construction procedure for a curved section that bends in a substantially arc shape, and the construction proceeds from the left side to the right side in each of the drawings. In FIG. 8, the construction from the left side to the support base 5 has already been completed, and the girder 7 is bridged on the support bases 5 and 5-1 in the next section. When the work between the supports 5, 5-1 is completed, the girder 7 is horizontally swung clockwise as shown in FIG. 9 (the supports 5, 5-1 are moved in the road width direction), and the next support is performed. Turn to 5-2.

Further, the girder 7 is moved forward as shown in FIG. 10 and bridged over the supports 5-1 and 5-2, and is horizontally swung clockwise as shown in FIG. Work between the two.

-Part 2-In the girder 7 of FIG. 12, a hand roll 10 is provided on the right side of the figure, and a traveling vehicle 14 is provided on the left side thereof. In this conventional apparatus, the construction proceeds only from the left side to the right side in FIG. That is, the traveling vehicle 14 is supported on the formed bridge.

FIG. 13, FIG. 14, FIG. 15, FIG. 16, FIG.
7, FIG. 18, FIG. 19, and FIG. 20, the procedure for constructing a curved road with the girder 7 of FIG. 12 is described. In FIG. 13, the construction from the left side to the pier 1 has already been completed. After that, the height is adjusted by holding the girder 7 on both sides of the support bases 5-1, and then the bridge segment 9 is lifted to an appropriate position. Suspended temporarily.

Further, the operation of lifting and temporarily suspending the bridge segment 9 while moving the hoisting machine 8 is repeated, and the bridge segment 9 is aligned and temporarily suspended below the girder 7 (see FIG. 14). After the completion of the alignment temporary suspension operation, an adhesive is applied between the bridge segments 9 and they are drawn and pressed. Next, concrete is poured into the so-called closed joint.

After curing and solidification, the PC cable 15 is inserted inside, and the PC cable 15 is tightened (see FIGS. 15 and 16). Next, after the girder 7 is jacked down and held on both sides by the support bases 5 and 5-1, the girder 7 is horizontally swung to be oriented in a direction along a curved road, and the rear part of the girder 7 is supported by the traveling carriage 14. (See FIG. 17).

Then, the support 5 is moved to a position just before the support 5-1 and temporarily placed (see FIG. 18), and the girder 7 is moved to the bridge 1.
-2, the vehicle is moved by the traveling vehicle 14 and stopped when the moving tip reaches the bridge 1-2, and the support 5-1 is moved to the bridge 1
The support base 5 is moved to the position of -2 and the position of the bridge 1-1, respectively (see FIG. 19). In addition, the girder 7 is supported by the front and rear hand rolls 10 and the traveling cart 14 to resume its forward movement, and to stop when reaching the section of the bridge 1-1, 1-2, thereby supporting the girder 7. After jacking up with the platforms 5 and 5-1 and holding both sides, construction of the same section is started (Fig. 20).
reference).

[0014]

It is desired to construct the construction in order from the section having the highest priority on a flexible basis, or to switch the construction direction in the middle of the construction, such as when constructing a large span. However, the conventional device shown in FIG. 12 cannot meet the above-mentioned demand because the girder cannot move by skipping the section where the construction is not completed.

Further, in the conventional apparatus shown in FIGS. 3 and 12, when the radius of curvature of a curved road to be constructed is small (generally, when the radius of curvature is 200 m or less), the girder is formed along the curved road having an arc shape. Since the amount of lateral movement of the girder is limited by the width of the road above the pier, a wide slide beam (slide base 3) must be used to widen the girder. Significant increase in cost including stakes. In addition, curved roads with small radii of curvature are often present in urban areas and interchanges, and the use of wide support beams in surrounding buildings is restricted.

Further, as shown in FIG. 7 or FIG. 12, when the reaction force of the girder is applied to a portion other than the fulcrum portion of the bridge, the bridge main body is greatly affected, and a significant cost increase is required such as the use of a temporary PC cable and an increase in the cross section. Becomes In the worst case, the construction cannot be performed.

[0017]

An apparatus according to the present invention comprises:
A pair of guide arms formed to have a length that can be installed between piers installed at standard intervals and piers, and running in the bridge axis direction and protruding one end from each side of the bridge on both sides of the construction incomplete section, A bridge segment erection girder that moves on the pair of guide arms, and a mechanism that couples and separates the end portions of the pair of guide arms at an arbitrary angle in a horizontal plane is provided. Is
It moves along a pair of guide arms that are placed linearly in the bridge axis direction or placed in a curved line in a substantially arc shape, and bridges a bridge segment by connecting a bridge segment between piers, or adjacent to each other. A bridge segment erection girder mounted between the piers via a telescopic support member and connecting the bridge segments between the piers to form a bridge; and a length that can be installed between the adjacent piers. A pair of guide arms connected to each other at one end side so as to be rotatable in the horizontal direction, and a track extending in the longitudinal direction is provided on upper and lower surfaces of the pair of guide arms, respectively. The guide arm is provided on a pier, and the track is mounted on a guide roller that is rotatable in the horizontal direction. The guide arm is capable of linearly moving in the bridge axis direction and curving in a substantially arc shape. The pair of guides Is placed guide roller bridge segment erection girders in orbit provided over arm upper surface,
It is characterized in that it can be moved linearly in the direction of the bridge axis and curvedly in a substantially arc shape.

(Function) In the case where the bridge segment erection girder is moved by skipping between bridges that have not been constructed,
For example, guide arms are respectively arranged on both sides of the section, and one guide arm and the other guide arm are connected. Then, the bridge segment erection girder is moved on both guide arms.

Next, the bridge segment erection girder is jacked up, the two bridges are used as a foothold, the two guide arms are separated, and the guide arms are retracted from the same section to perform the bridge erection work. After the work is completed, the two guide arms are erected between the next bridges, and the bridge segment erection girder is transferred on the guide arms to perform the erection work for the next unconstructed section.

When skipping over a section of a large span, the tip of the bridge segment erection girder is protruded from one bridge side to protrude the above-mentioned cantilever erection part.
Reduce that span to less than the length of the girder. When the construction target is a curved path having a substantially arc shape, guide arms are arranged on both sides of the section, and the two guide arms are connected so as to be rotatable in the horizontal direction.

Then, both guide arms are bent in the substantially arc shape in the same arc-shaped section and installed. Further, the bridge segment erection girder is mounted on both guide arms which are bent and erected in a substantially rectangular shape, and the bridge segment erection girder is moved along the two guide arms. At this time, in order to set both ends of the bridge segment construction girder at the correct positions in the width direction on the bridge, the bridge segment construction girder is horizontally swung and adjusted. Jack up the bridge segment construction girder and stand both bridges as a foothold.Also, separate both guide arms, retreat the other guide arm and open the lower side of the girder, construct the bridge between the two bridges Start.

After the construction of the section is completed, both guide arms are inserted between both bridges, the girder is jacked down, lowered on both guide arms, and moved to the next section. Then
As described above, when the radius of curvature of the section to be constructed is a sharp curve, the guide arms are protruded from both sides of the section, and these protruding tips are connected to form a substantially V-shape. Secure the moving path of the bridge segment erection girder. In addition, the bridge segment erection girder moves while swinging horizontally on both guide arms,
Both bridges are to be used as scaffolds.

When a bridge having a large span is to be constructed, the tip of the bridge segment erection girder is protruded from one bridge side to provide the above-mentioned cantilever erection portion, and the span is set to the length of the bridge segment erection girder. Shortened to the following.
Alternatively, a cantilever erection part is provided on one bridge side, then the bridge segment erection girder is skipped to the other bridge side, a cantilever erection part is provided on the other bridge side, and a bridge is provided between the two cantilever erection parts. This section may be constructed by passing a segment erection girder.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Part 1 In FIG. 21, the distance between bridges 1 and 1-1 is 39500.
mm, the distance between the bridge 1-1 and 1-2 is 39000 mm,
The distance between bridges 1-2 and 1-3 is 66500m with a large span
m.

Slide bases 3-1, 3-1, 3-2, 3-3 are mounted on the heads of the bridges 1, 1-1, 1-2, 1-3, respectively. Roller device 16, 1
6-1, 16-2 and 16-3 are arranged respectively (see FIG. 21 and FIG. 29 in which a part of FIG. 21 is enlarged). Sign 1
Reference numeral 8 denotes a guide arm, and the guide arm 18 has a long main body and a so-called hand-rolling machine portion 10 at the distal end.

Further, the upper and lower surfaces of the guide arm 18 are provided with two rails each extending in the longitudinal direction, and the rails on the lower surface side are provided with the roller devices 16, 16, 16-1,.
16-2, 16-3, and the guide arm 1
Numeral 8 is movable in the bridge axis direction. The girder 7 is mounted on the guide arm 18, and a roller device provided below the girder 7 is mounted on a rail provided on the guide arm 18, and can be moved in the longitudinal direction of the guide arm 18. It is configured as follows.

In FIG. 21, the girder 7 is further supported at its front and rear parts by a support member 13 which can be extended and contracted, and the work is carried out while being supported by the support member 13.
The length of the girder 7 is, for example, 60,000 mm, which is shorter than the distance (66,500 mm) between the bridges 1-2 and 1-3 in this embodiment. Also, as shown in FIG. 22, the construction is performed on a gentle curved road having a radius of curvature of 1,200,000 mm.

Here, when constructing between the bridges 1-2 and 1-3 having a large span, the guide arm 18 on the bridges 1 and 1-1 is used.
The girder 7 is mounted on the bridge 1 as shown in FIG. 21 and FIG.
3 is transported to a position where it protrudes by an appropriate length (12,500 mm), and the girder 7 is held. After the girder 7 is held, the guide arm 18 is retracted to the position shown in FIGS. 21 and 22, and the lower side of the girder protrusion is opened,
The bridge segment 9 is lifted at the same portion, and the cantilevered portion 1
2 is provided.

By providing the cantilevered portion 12, the span between the bridges 1-2 and 1-3 is substantially reduced. In FIG. 21, the length of the cantilevered portion 12 is 12,
Since it is 500 mm, the span between bridges is less than the girder length of 60,000 mm. Therefore, for example, the guide arm 18 is connected to the bridge 1-2 (the cantilevered portion 12), 1-3.
Hang over.

The guide arm 18 is connected so that the first guide arm 18-1 and the second guide arm 18-2 can rotate at an arbitrary angle in a horizontal plane. For example, the ends of both guide arms 18-1 and 18-2 are hinged to each other by pins or the like, and are connected rotatably. The insertion and withdrawal of the pins and the like can be performed by using the hoisting machine 8 of the girder 7.

After the guide arm 18 is extended, the girder 7 is jacked down and the support
The girder 7 is mounted on the guide arm 18, and both sides thereof reach the cantilevered portion 12 and the bridge 1-3, respectively, and are moved rightward in FIGS. 21 and 22 to a position where they are bridged therebetween. Thereafter, the girder 7 is lifted up from the guide arm 18 by jacking up, and the two guide arms 18 are separated in that state.

Further, the guide arm 18 which has been bridged over the cantilevered section 12 and the bridge 1-3 is replaced with the guide arm 18 shown in FIGS.
And the lower side of the girder 7 is opened to construct the cantilevered portion 12 and the remaining portion of the bridge 1-3. After the completion of the construction, the girder 7 is jacked up, the guide arm 18 is moved below the girder 7, and then the girder 7 is jacked down and mounted on the guide arm 18,
It is carried rightward or leftward in FIGS. 21 and 22.

From the above description, it can be seen that even if the section exceeding the girder length (between the bridges 1-2 and 1-3) remains, the same section can be constructed. It is understood that the construction is not required, that the construction can be switched in the opposite direction, that the girder 7 can be moved by skipping the unconstructed section, and that no large girder reaction force is applied to the bridge body. You.

A cantilevered portion 12 is provided on one bridge 1-2, a guide arm 18 is bridged between the cantilevered portion 12 and the bridge 1-3, and the girder 7 is connected to the other bridge 1--2.
It is also possible to skip to the third side, provide the cantilevered portion 12 on the other bridge 1-3 side, insert the girder 7 between both cantilevered portions 12, and construct this section with the girder 7.

FIG. 23, FIG. 24, FIG. 25, FIG. 26, and FIG.
This will be described with reference to FIGS. 27, 28 and 1. In FIG. 23, the construction is advanced from the left side to the right side and completed to the pier 1-1, the pier 1-1 and the pier 1-2 are under construction, and the first guide arm 18-1 is in the section on the left side. In addition, the second guide arms 18-2 are respectively retracted in the right section.

When the construction in the section is completed, the first guide arm 18-1 is connected to the second guide arm 18- as shown in FIG.
2 and move both guide arms 18-1 and 18-
2 are connected. At this time, the first guide arm 18-1 is in a state of being bridged between the piers 1-1, 1-2, and 1-3 below the girder 7. Next, the girder 7 is jacked down to shrink the support member 13 and mounted on the guide arm 18.

Then, as shown in FIG. 25, the girder 7 is moved to the next section (between the piers 1-2 and 1-3). FIG. 26
The guide arms 18-1 and 18-2 are horizontally swung until both ends reach appropriate positions in the width direction of the piers 1-2 and 1-3 as shown in FIG. The guide arm 18 is located at the center in the road width direction as much as possible. Further, the girder 7 is jacked up as shown in FIG.
After proceeding for the section, both guide arms 18-1 and 18-2
Is separated.

Then, as shown in FIG. 28, the second guide arm 18-1 is retracted to the left in FIG. 28, the lower side of the girder 7 is opened, and the section of the piers 1-2 and 1-3 is constructed. Hereinafter, the operations of FIGS. 23 to 28 are repeated. Here, FIG. 1 illustrates a case where a sharp curve section is constructed.
The distal ends of both guide arms 18-1 and 18-2 are extended to a substantially central position of the construction section, and the extended distal ends are connected at that position. As shown in the figure, the two guide arms 18-1 and 18-2 are hingedly connected by, for example, a pin 22 or the like, and can be connected at an arbitrary angle in a horizontal plane as described above, and can be easily separated.

The girder 7 includes guide arms 18-1 and 18
-2 by moving on the connecting road, naturally
It will be correctly spanned on 2, 1-3. Therefore, construction is possible even in a curve section having a considerably steep curve. At that time, a slide beam that protrudes greatly in the road width direction is not used, and the amount of protrusion in the road width direction is small, so even if there are nearby buildings, these will not hinder construction, Work can be continued.

[0040]

According to the present invention, a large girder is not required for the construction of a large span section, and even if a section exceeding the girder length is left to be constructed, the construction of the same section can be performed, and the construction direction can be set to any direction. The girder can be moved by skipping the unconstructed section, and construction can be performed even if there is a building etc. approaching a section with a fairly sharp curve, without applying a large garter reaction force to the bridge body Construction work is possible.

Therefore, it is possible to shorten the construction period, reduce the cost, flexibly and flexibly change the construction section, and construct a sharply curved road in a building dense area.

[Brief description of the drawings]

[Fig. 1] Illustration of construction work on a sharp curve section (Part 1)

[Fig. 2] Illustration of construction work in a sharp curve section (Part 2)

FIG. 3 is a configuration explanatory view of a first conventional example.

Fig. 4 Construction illustration of the large span section

Fig. 5 Illustration of construction work in the large span section

[Fig. 6] Illustration of construction work in the large span section

[Fig. 7] Illustration of construction work in the large span section

Fig. 8 Illustration of construction work on a curved section

Fig. 9 Illustration of construction work on a curved section

Fig. 10 Illustration of construction work on a curved section

Fig. 11 Illustration of construction work on a curved section

FIG. 12 is a configuration explanatory view of a girder provided with a traveling vehicle.

[Fig. 13] Illustration of construction work on a curved section

[Fig. 14] Illustration of construction work on a curved section

[Fig. 15] Illustration of construction work on a curved section

FIG. 16 is an illustration of construction work on a curved section

[Fig. 17] Illustration of construction work on a curved section

FIG. 18 is an illustration of construction work in a curved section

Fig. 19 Illustration of construction work on a curved section

[Fig. 20] Illustration of construction work on a curved section

Fig. 21 Construction illustration for large span section

Fig. 22 Illustration of construction work in the large span section

FIG. 23 is an explanatory diagram of section continuous construction.

FIG. 24 is an explanatory diagram of section continuous construction.

FIG. 25 is an explanatory diagram of section continuous construction.

FIG. 26 is an explanatory diagram of section continuous construction.

FIG. 27 is an explanatory view of section continuous construction.

FIG. 28 is an explanatory diagram of section continuous construction.

FIG. 29 is a configuration explanatory view showing an installation state on a bridge according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bridge pier 3 Slide base 5 Support stand 7 Girder 8 Hoisting machine 9 Bridge segment 10 Hand rolling machine 12 Cantilever erection part 13 Support member 14 Traveling trolley 15 PC cable 16 Roller device 18 Guide arm 22 Pin

Claims (2)

[Claims] 1. A pair of guide arms formed to have a length that can be installed between piers installed at a standard interval and moving in a bridge axis direction, and move on the pair of guide arms. A bridge segment erection girder, and a mechanism for coupling and separating at an arbitrary angle in a horizontal plane is provided on the pair of guide arm end sides, wherein the bridge segment erection girder is straight in a bridge axis direction. A bridge segment that moves along a pair of guide arms that are placed or bent in a substantially rectangular shape, and that connects a bridge segment between piers to build a bridge. 2. A bridge segment erection girder which is mounted between adjacent piers via an elastic support member and connects a bridge segment between the piers to form a bridge; A pair of guide arms each having a length that can be erected and each being rotatably connected at one end side in a horizontal direction; and a track extending longitudinally on upper and lower surfaces of the pair of guide arms. The pair of guide arms are mounted on a pier, and the track is mounted on a horizontally rotatable guide roller. The pair of guide arms can move linearly in the bridge axis direction and curve in a substantially arc shape. The bridge segment erection girder has guide rollers of the bridge segment erection girder placed on tracks provided on the upper surfaces of the pair of guide arms, and can be linearly moved in the bridge axis direction and curved in a substantially arc shape. Was Bridge segment erection machine characterized and.