JPH0827723A - Beam construction for shielding of elevated bridge central reserve space - Google Patents

Abstract

PURPOSE:To prevent an undue force from acting on a connected part by rotating a base plate when elevated bridges are vibrated in the advancing direction of a road, rotating beam materials when the elevated bridges are vibrated in vertical direction, and varying the inclination of the divided beam materials when the elevated bridges are vibrated in the direction that a distance between the elevated bridges is varied. CONSTITUTION:An anchor bolt attached at the inner edge of the elevated bridges 1 and 2 for up and down lines is inserted into the arc oval hole in the mounting plate 6 of a base plate 5, and the base plate 5 is installed rotatably along the oval hole and in horizontal direction. Also a beam material 4 is divided at the middle part, the divided end part is connected rotatably, the connected part is crossed over the elevated bridges 1 and 2 as it is bent, and both ends of the beam material 4 are installed on the rise piece 7 of the base plate 5 rotatably in vertical direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beam structure for a viaduct beam central separation space space portion shielding. More specifically, upper and lower lines such as expressways are often provided with separate viaduct beams, and the upper and lower lines are often separated, and the space that serves as the central separator between the upper and lower lines of such viaduct beams (viaduct The present invention relates to a beam structure for shielding a viaduct beam central divider space portion that supports a plate body that shields the beam central divider space portion.

[0002]

2. Description of the Related Art In highways and the like, viaduct beams are often provided separately on the upper and lower lines, and the upper and lower lines are often separated. Therefore, in such viaduct beams, a space ( The viaduct beam central divider zone) occurs. If there is a space between the viaduct beams and the median strip between the upper and lower lines, there is a risk that a vehicle, luggage, or a person may fall. Conventionally, in order to prevent this danger, it has been practiced to shield the viaduct beam central separator space portion.

The conventional methods for shielding the space between the viaduct beams and the central dividers are roughly classified into the following three methods. That is, the first method is a method of bridging a wire net or a wire between the upper and lower wires and attaching a sheet on the wire. The second method is a method of bridging a metal plate, a synthetic resin plate, or the like, as described in Japanese Utility Model Laid-Open No. 63-14612. A third method is a method of bridging beam members such as H-section steel, T-section steel, and C-section steel, and mounting a metal plate or a synthetic resin plate on this.

[0004]

However, in the first method, when the space between the viaducts of the upper and lower lines becomes large and the width of the median strip becomes wide, the sheet contains a large amount of wind, so that the wire mesh and Great force is applied to the wire. Further, since it is difficult to make the strength of the wire mesh or the wire more than a certain level, there is a problem that it is difficult to adopt it in a place where the width of the median strip is wide. Also, if a sheet is attached on the wire mesh or wire, the sheet, wire mesh, wire, etc. are exposed to wind and rain, and ultraviolet rays, so there is a problem that they are easily corroded and inferior in durability. Therefore, there is a problem of poor sound insulation. Further, when the wire is laid over and the sheet is attached on the wire, there is a problem that it is difficult for a person to work on the sheet because the space between the wires is wide.

In the second method, when the width of the median strip is widened, the bridging metal plate or synthetic resin plate is bent, which makes it difficult to mount and therefore difficult to construct. Further, if the metal plate or the synthetic resin plate contains wind, a large force is applied to the metal plate or the synthetic resin plate. Therefore, there is a problem that it is difficult to adopt it in a place where the width of the median strip is wide. Further, when a vehicle passes over the viaduct beams of the upper and lower lines or the wind is strong, the viaduct beams vibrate, but when the viaduct beams vibrate in this way, an unreasonable force is applied to the mounting portion of the metal plate or the synthetic resin plate. It takes a lot, this mounting part and metal plate,
There is a problem that the synthetic resin plate is damaged. In order to solve this problem, it is attached with a rubber plate sandwiched between them, but even with this, when the viaduct beam becomes taller, this vibration width becomes larger and it is not possible to absorb the vibration, and it is damaged or damaged. The resin plate may come off and fall.

In the third method, the strength of the beam material bridged between the viaducts of the upper and lower lines is large, and therefore, it is not damaged even if it contains wind and the like, so that it can be adopted even if the width of the median strip is wide. This is the preferred method. However, if the viaduct beam vibrates due to a vehicle passing through the viaduct beam, wind, or the like, an excessive force is applied to the attachment portion of the beam, and this attachment portion is easily damaged.

As a method for solving this problem, there is a method in which the beam member is a cantilever beam, or both ends of the beam member are rotatably attached in a pin structure. Since the cantilever supports the beam member only by one side, it is difficult to increase the support of the long beam member, and it is difficult to adopt the cantilever beam in the place where the width of the median strip is wide. Also, the method of supporting the beam member in the vertical direction by the pin structure can be applied when the upper and lower viaduct beams vibrate in the vertical direction, and there is no problem, but the vibration of the upper and lower viaduct beams does not affect the vertical direction. Not only that, it vibrates in the front-rear direction and in the lateral direction, so that it cannot adapt to these vibrations and the connection part may be damaged.

Therefore, an object of the present invention is to provide a beam material which is easy to increase in size. By improving the above-mentioned pin structure, the viaduct does not exert an unreasonable force on the mounting portion of the beam material even if the beam vibrates in various directions. The purpose of the present invention is to provide a beam structure that shields the beam median space.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, in which a base plate is provided at an inner edge portion of a viaduct beam which is separately provided in upper and lower lines, and the beam is attached to the base plate. A beam structure in which a beam is bridged and the end of this beam member is connected to a base plate is a beam structure of a viaduct beam central separator space part shielding, the beam member is divided at an intermediate portion, and the divided end portions are The base plate is rotatably connected in the vertical direction, and the base plate is composed of a mounting plate and a rising piece erected on the mounting plate. An arcuate slot along the circumference of the center is provided, an anchor bolt is attached to the side edge of the viaduct beam, and this anchor bolt is passed through the arcuate slot of the mounting plate of the base plate. Screwed in from above the base plate A base plate is rotatably attached to the side edge of the viaduct with a nut along an arcuate long hole, and the beam is attached to the base plate of the viaduct of the upper and lower lines with the connecting part of the middle part bent. The beams are bridged, and both ends of the beam are connected to the rising pieces of the base plate so as to be vertically rotatable.

The beam used in the present invention is divided at an intermediate portion, and the divided end portions are connected to each other so as to be rotatable in the vertical direction. Alternatively, a connecting piece such as a gusset plate may be attached to the divided portion and the connecting piece may be rotatably connected. In addition, since it is difficult to attach a metal plate or a synthetic resin plate to this connecting portion, a gap may be created in this connecting portion, and work on this may be dangerous. It is advisable to use a flexible material such as the above, and to close the gap so as not to hinder the rotation of the beam member.

Further, in the present invention, the beam member is connected to the rising piece of the base plate so as to be rotatable in the vertical direction. For this connection, the beam member is directly connected to the rising piece of the base plate by pins, bolts or the like. It may be rotatably connected, or a connecting piece such as a gusset plate may be attached to the beam member, and the connecting piece such as the gusset plate may be rotatably connected to the rising piece of the base plate.

[0012]

When the vehicle passes through the viaduct beam or wind blows, the upper and lower viaduct beams vibrate, and the beam structure of the present invention does not have an unreasonable force. First, when the viaduct beam vibrates in the traveling direction of the road, it acts as follows. That is, in the beam structure of the present invention, the anchor bolt attached to the side edge portion of the viaduct beam is passed through the arc-shaped long hole of the attachment plate of the base plate, and the base plate has the arc-shaped long hole in the side edge portion of the viaduct beam. Since the beam is connected to the base plate and the beam is connected to the base plate, the base plate can be horizontally rotated along the arc-shaped long hole on the side edge of the viaduct beam. Together with the base plate can be horizontally rotated on the side edge portion of the viaduct beam. Therefore, when the viaduct beam vibrates in the traveling direction of the road, the base plate rotates and an unreasonable force does not act on the connection portion of the beam members.

Next, when the upper and lower viaduct beams vibrate in the vertical direction, in the beam structure of the present invention, the end portions of the beam members are vertically rotatably attached to the rising pieces of the base plate. , The end of the beam does not rotate up and down, and the connecting part of the beam is not forced.

Finally, the direction in which the distance of the viaduct changes,
That is, when the beam vibrates in a direction substantially orthogonal to the traveling direction of the road and the beam members push or pull from both sides,
In the beam structure of the present invention, the middle portion of the beam member is divided, the divided end portions are rotatably connected in the vertical direction, and the connecting portion of the beam member is bent to form a viaduct for the upper and lower lines. Since it is hung on the base plate of the beam and both ends of the beam are rotatably connected to the rising pieces of the base plate, the angle of both connection parts changes and the inclination of the beam changes. , The distance between both ends of the beam changes, and the beam is not subjected to excessive force.

[0015]

Next, embodiments of the present invention will be described. 1 to 5 show an embodiment of a beam structure of the present invention for a viaduct beam central separation space shield, FIG. 1 is an explanatory view showing a viaduct beam, and FIG. 2 is a beam material bridged between viaduct beams. 2 is a plan view showing a connecting portion between the beam members in FIG. 2, FIG. 4 is a plan view showing a connecting portion between the beam members in FIG. 2 and the base plate, and FIG. 5 is a beam member in FIG. 2 and the base plate. It is a side view which shows the connection part with.

In FIG. 1, 1 is a viaduct beam on the upstream side,
2 is a viaduct beam on the down line side. Reference numeral 3 is a central separator space portion between the viaduct beam 1 on the up line side and the viaduct beam 2 on the down line side. Reference numeral 4 denotes a beam member provided in the central divider space portion 3.

As shown in FIG. 2, the beam member 4 is divided into a right beam member 41 and a left beam member 42 at an intermediate portion, and gusset plates 43 are attached to both of the divided ends. The gusset plate 43 is provided with a through hole and is rotatably connected by a pin 44 inserted in the through hole. Reference numeral 45 shown in FIG. 2 and FIG. 3 denotes a head tree made of a thin steel plate which is provided between the right beam member 41 and the left beam member 42 of this divided portion. Further, gusset plates 8 are attached to the beam members 4 at both ends thereof, that is, at the opposite ends of the right beam member 41 and the left beam member 42 to which the gusset plates 43 are attached. ing.

Reference numeral 5 is a base plate attached to the inner edge of the viaduct beams 1 or 2 of the upper and lower lines, and a mounting plate 6 attached to the inner edge portions of the viaduct beams 1 and 2 and the mounting plate 6 provided upright. It consists of two rising pieces 7.

As shown in FIG. 4, the mounting plate 6 is provided with arcuate elongated holes 61 on both sides of the two rising pieces 7 along the circumference of the rising piece 7. Each is provided. In the arc-shaped long hole 61 of the mounting plate 6, the viaduct beam 1,
Anchor bolt 11 attached to the inner edge portion of 2 is inserted, and a nut 12 screwed from above anchors the base plate 5 rotatably along the arcuate elongated hole 61. As shown in FIGS. 4 and 5, a rotary shaft 71 is attached between the two rising pieces 7.

Next, an explanation will be given of the construction method and operation of the beam structure for shielding the viaduct beam central separator space portion. First, the anchor bolts 11 are attached to the inner edges of the upper and lower viaducts 1 and 2, respectively, the anchor bolts 11 are passed through the arc-shaped long holes 61 of the base plate 5, and the nuts are screwed into the base plate 5 from above. , Anchor bolt 1
The base plate 5 is attached to 1 so as to be rotatable along the long hole 61.

Next, as shown in FIG. 2, the beam member 4 is bent in the upward direction at the intermediate cut portion, and both ends of the beam member 4 are side edges of the viaducts 1 and 2 of the upper and lower lines, respectively. The gusset plates 8 attached to both ends of the beam 4 are bridged over the base plate 5 attached to the base plate 5, and the rotating shaft 7 of the rising piece 7 of the base plate 5 is attached to the gusset plates 8 as shown in FIGS.
Rotatably connected to 1.

The beam member 4 thus bridged does not exert an unreasonable force on the connection portion of the beam member even if the vehicle passes through the viaduct beam or wind blows to vibrate in any direction. . That is, when a vehicle passes through the viaduct beams or wind blows, and the upper and lower viaduct beams 1 and 2 vibrate in the traveling direction of the road of the viaduct beams, the beams bridged over the upper and lower viaduct beams 1 and 2. The material 4 rotates in the traveling direction of the road with respect to the viaduct beam 1 or 2. As a result, the gusset plate 8 connected to the beam 4 tries to rotate the base plate 5.

The base plate 5 is provided with an anchor bolt 11 attached to a side edge portion of the viaduct beam 1 or 2 along an arc-shaped elongated hole 61 along a circumference centered on substantially the center of the rising piece 7. Since it is rotatably connected, when the gusset plate 8 tries to rotate the base plate 5 as described above, the base plate 5 rotates, and an unreasonable force does not act on this connection portion. This connection will not be damaged.

When the vehicle passes or wind blows and the upper and lower viaduct beams 1 and 2 vibrate in the vertical direction, the beam member 4 bridged between the upper and lower viaduct beams 1 and 2 becomes a viaduct. Beam 1
Alternatively, it rotates in the direction perpendicular to 2. As a result, the gusset plate 8 connected to the beam 4 tends to rotate the base plate 5 in the vertical direction.

However, since the gusset plate 8 is rotatably connected to the rotary shaft 71 of the base plate 5 in the vertical direction, the gusset plate 8 rotates about the rotary shaft 71, and the gusset plate 8 is attached to the base plate 5 as described above. Even if an attempt is made to rotate it in the vertical direction, no unreasonable force is exerted on the connecting portion, and therefore the connecting portion is not damaged.

Further, when a vehicle passes or wind blows and vibrates in a direction in which the distance between the upper and lower viaduct beams 1 and 2 changes, both ends of the beam member 4 bridged over the viaduct beams 1 and 2. Pull each other or push each other.

That is, the beam member 4 is composed of the right beam member 41 and the left beam member 4.
2 and the beam members 41 and 42 are bent upward, and both ends thereof are rotatably connected in the vertical direction via the gusset plate 43. Since it is rotatably connected to the rising piece 7 of the base plate 5 through the gusset plate 8, when the viaduct beams 1 and 2 are separated or approached, both connection parts are rotated and the right beam is connected. The distance between the viaduct beams 1 and 2 changes due to the change in the inclination of the member 41 and the left beam member 42. Therefore, no unreasonable force acts on this connecting portion, and the connecting portion is not damaged.

In this way, no matter which direction the upper and lower viaduct beams vibrate, an unreasonable force does not act on the connection portion between the beam member 4 and the viaduct beam 1 or 2, and as a result, this connection portion is It will not be damaged.

[0029]

As described above in detail, according to the present invention, when the viaduct beam vibrates in the traveling direction of the road due to the force of the vehicle passing through the viaduct beam or the wind, the base plate is rotated by the arc-shaped elongated hole. , Unnecessary force does not work on the connection part.
Further, when the viaduct beam vibrates in the vertical direction, the beam member rotates in the vertical direction, so that an unreasonable force does not act on the connecting portion. Therefore, this connecting portion is not damaged.

Further, when the vehicle vibrates in the direction in which the distance between the upper and lower viaduct beams changes due to the force of a vehicle or wind passing through the viaduct beams, the inclination of the divided beam members changes, which makes it impossible for the connecting portion. Power does not work. As described above, in the beam structure of the viaduct beam central separator space portion shielding of the present invention, even if the viaduct beam vibrates in any direction, an unreasonable force does not act on the connecting portion. It is safe and will not be damaged.

[Brief description of drawings]

FIG. 1 shows an embodiment of a beam structure of the present invention and is an explanatory view showing a viaduct beam.

FIG. 2 is a partially cutaway front view of a beam member bridged between viaduct beams.

FIG. 3 is a plan view showing a connection portion of the beam member of FIG.

FIG. 4 is a plan view showing a connecting portion between the beam member and the base plate of FIG.

5 is a side view showing a connecting portion between the beam member and the base plate of FIG. 2. FIG.

[Explanation of symbols]

 1, 2 Viaduct beam 11 Anchor bolt 3 Median space 4 Beam member 41 Right beam member 42 Left beam member 5 Base plate 6 Mounting plate 61 Arc-shaped long hole 7 Standing piece 71 Rotating shaft 8 Gusset plate

Claims (1)

[Claims] 1. A center of a viaduct, in which a base plate is provided at an inner edge portion of a viaduct beam which is separately provided in upper and lower lines, a beam member is bridged to the base plate, and an end portion of the beam member is connected to the base plate. In the beam structure of the separation band space portion shielding, the beam member is divided at an intermediate portion, the divided end portions are rotatably connected in the vertical direction, and the base plate is attached to the attachment plate and the attachment plate. It consists of standing upright pieces, and the mounting plate is provided on both sides of the upright pieces with arcuate long holes along the circumference centered around the center of the upright pieces. Anchor bolts are attached to the edges, the anchor bolts are passed through the arc-shaped long holes of the base plate mounting plate, and the nuts screwed from the top of the base plate make the base plate arc-shaped on the side edge of the viaduct beam. Can be rotated along the long hole of The beam is mounted on the base plate of the viaduct beam of the upper and lower lines with the connecting part of the middle part bent, and both ends of the beam are vertically rotated to the rising piece of the base plate. The beam structure of the viaduct beam central separation space space shield, which is installed so that it can be installed.