JP5163326B2 - Footbridge - Google Patents

Description

  The present invention relates to a pedestrian bridge provided so as to straddle a road, a river, or a railway line.

  A typical pedestrian bridge has a pair of pillars standing across the road, and is supported by these pillars to form a walking road surface over which a crossover is built, and can be climbed at both ends of the walking road surface. In this way, climbing means such as stairs, escalators and elevators are connected.

These pedestrian bridges only serve as three-dimensional passages that carry people from one side of the road to the other without crossing the roadway, and were not associated with other functions.
The present invention has been made in view of the above, and it is an object of the present invention to provide a pedestrian bridge capable of evacuating in the event of an emergency such as a tsunami or flood, and in particular capable of evacuating many people other than the walking road surface.

In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that a main support column is erected via a foundation at a location corresponding to a roadway on each sidewalk disposed on both sides of the driveway, and the two main support columns Between the upper ends, a crossover frame having a long quadrilateral walking road surface is constructed so as to straddle the roadway, and a direction in which a tsunami is expected to strike between both ends of the crossover frame and each sidewalk Positional relationship in which the lower ascending / descending means, which is unidirectional ascending and descending so as to form an inclining shape and supported by the auxiliary struts, is supported by the auxiliary struts in the front-rear direction. The pedestrian bridge body is configured by connecting the two, and the upper side of the pedestrian bridge body corresponding to the width direction of the roadway of the bridge frame is raised and inclined in the direction facing the tsunami attack Ascending and descending means form a pair From the upper end of the upper climbing means, the stage housing with a stage surface set higher than the walking road surface is mounted horizontally in a state extending in a direction in which a tsunami is expected to come The evacuation stage is configured to be fixedly supported via the upper end of the stage column that is erected on the side of the footpath so that the evacuation stage is located on the front side where the tsunami hits the main column. In addition, the stage support and the main support are connected to each other by a connecting member.
According to a second aspect of the present invention, in the first aspect of the present invention, the evacuation stage includes a stage housing having a long quadrilateral stage surface integrally connecting a pair of left and right lower climbing means. It is arranged in a highly parallel and spaced-apart manner on the front side where a tsunami attack is expected.

According to the invention, the erecting primary pillar through the foundation at a roadway corresponding number locations in each sidewalk arranged on both sides of the roadway, the upper ends of both main columns, long quadrilateral A crossover structure having a walking road surface is constructed so as to straddle the roadway, and between both ends of the crossover structure and each sidewalk, the crossover is lowered along a direction in which a tsunami attack is assumed. The pedestrian bridge body by connecting the lower climbing means, which is one-way up-and-down type and fixed up and down and supported by the auxiliary column, with the corresponding positional relationship in front and back with respect to the main column In the pedestrian bridge body, both ends corresponding to the width direction of the roadway of the crossover frame have a pair of left and right upper climbing means that face the direction in which the tsunami is expected to rise and are inclined. Is attached and From the upper ends of these upper climbing means, a stage housing having a stage surface set higher than the walking road surface is attached horizontally in a state where it is extended in a direction in which a tsunami is expected to come in, so that the evacuation stage is The evacuation stage is configured to be fixedly supported via an upper end of a stage column that is erected on the base of a sidewalk so as to be located on the front side where a tsunami attack of the main column is expected , and the stage Since the column and the main column are connected to each other by a connecting member, it is possible to evacuate in the event of an emergency such as a tsunami or flood, and in particular, many people can be evacuated in addition to the walking road surface. A pedestrian bridge can be provided.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. However, each proposed example included in each embodiment described here is assumed to be applied to other embodiments. The material of each constituent member will be described based on iron, but it is assumed that other existing metal materials such as aluminum alloy and titanium alloy, wood and resin can be used.

  FIG. 1 and FIG. 3 show one embodiment of a footbridge according to the present invention, where 1 is a roadway, 2 is a main support, and the main support 2 is fixed to a foundation 3 at a corresponding position across the roadway 1. There is a confrontation. Between the upper ends of these main support columns 2 and 2, a bridge case 4 is installed, a walking road surface 5 is laid in the interior, and a safety fence 6 is attached to the upper part. The safety fence 6 may be a cover made of a resin plate. The crossover 4 includes a groove-type exterior material, but most of the bottom has a structure in which a steel material such as H steel is passed to the bottom as shown by a broken line in FIG. ing. Other structures may be adopted.

  Reference numeral 8 denotes climbing means, which includes a staircase body 9, a staircase body 10, and a safety fence 11, and communicates the sidewalk 12 and the walking road surface 5. Reference numeral 13 denotes a base that is anchored to a foundation (not shown), and reference numeral 14 denotes an auxiliary support post that is fixed to the base 15 and is erected.

  An evacuation stage S for urgent evacuation such as tsunami and flooding is constructed for these existing pedestrian bridges. Reference numeral 17 denotes a foundation, which is formed at a location away from the foundation 3 of the main support 2, and a stage support 18 having a diameter larger than that of the main support 2 is erected through the foundation 17. A stage housing 19 is attached to the upper end of the stage column 18 so as to extend greatly from one end of the pedestrian bridge into a plane L shape. As shown in the plan view of FIG. . . It is integrated with the bottom steel material on the pedestrian bridge side. At the same time, a safety fence 20 is attached to the upper part of the stage housing 19. The stage surface 21 is a floor surface having the same height as the walking road surface 5. The stage column 18 and the main column 2 are connected by a reinforcing beam 22. In addition, a traffic sign 23. . . Is attached.

The evacuation stage S has a bottom height of about 2 m (may be more) than the estimated height of the tsunami shown in FIG. If you evacuate to Stage S, the safety of those who evacuate there will be sufficiently maintained even if a tsunami strikes. In addition, the evacuation stage S is safe in strength because the pedestrian bridge body resists as a structure behind the tsunami.
In the evacuation stage S, emergency evacuation equipment, light projecting means for promoting evacuation, solar, and the like can be attached.
Moreover, the climbing means 8 includes only a slope or a slope provided with a staircase.
Further, the climbing means 8 may be an escalator type or an elevator type.
Moreover, although the stage surface 21 in the evacuation stage S is a uniform floor surface, an elevated floor portion may be provided.
Further, as shown in FIG. 3, the evacuation stage S was projected from the end of the walking road surface 5 of the pedestrian bridge, but as shown in the upper right column of the figure, the end of the walking road surface 5 of the pedestrian bridge Alternatively, the shape of one side may be combined.
Further, as shown in the lower right column of the figure, the evacuation stage S may be widened so that one side thereof protrudes from the end line of the pedestrian bridge .

Furthermore, in the said embodiment, although the evacuation stage S was comprised in one side of the footbridge, as shown in FIG. 4, you may deploy at both ends.
In this case, the evacuation stages S may be connected by the connecting member 24.
The connecting member 24 may have a function as an evacuation stage in addition to the connecting function.
In addition, one or a plurality of cushioning piles 25 may be provided in front of the stage where a tsunami attack is expected, separated from the stage column 18.
The evacuation stage S is rectangular (including a square), but it may be triangular or semi-circular, or may be a modified trapezoid as shown in FIG. In the case of the rectangular shape, it may be as wide as it reaches the upper side of the roadway 1.
Furthermore, as shown in the upper right column of FIG. 4, the evacuation stage S may be arranged to be perpendicular to the end of the pedestrian bridge. In this case, the ascending / descending means 8 may be a bidirectional ascending / descending method as shown in the drawing, in addition to the unidirectional ascending / descending method. The evacuation stage S can also be increased in area as a two-plane parallel type, as indicated by a virtual line.
Further, as shown in the lower right column of FIG. 4, the evacuation stage S may be formed in a U-shape so that the ascending / descending means 8 passes through the cutout portion. Although the illustration shows a bidirectional ascending / descending type, this can also be applied to a unidirectional ascending / descending type.

FIG. 2 shows another embodiment. In the embodiment, the evacuation stage S is set higher than the walking road surface 5 of the pedestrian bridge.
Since the structure of the pedestrian bridge body is the same as that shown in FIG.
In the evacuation stage S, one or a plurality of stage struts 28 are erected and fixed to a foundation 29, and a stage housing 30 is installed and fixed on the stage struts 28 so that the space between the walking road surface 5 and the stage surface 31 is fixed. Connected by the climbing means 32, 33 is a safety fence.

Reference numeral 34 denotes a connecting member that connects the stage columns 28, and reference numeral 35 denotes another connecting member that connects the stage column 28 and the main column 2.
The evacuation stage S is provided only at one end of the pedestrian bridge, but may be provided at both ends as shown in FIG. In this case, as shown by the phantom line S, the evacuation stages S may be connected to provide a wider evacuation stage. The evacuation stage S stands from the separation zone when there is a central separation zone. You may make it support by the other support | pillar provided.
As shown in the upper right column of FIG. 6, the evacuation stage S may be connected by a (W) climbing means 32 that is wider than the climbing means 8. As shown in the lower right column of the figure, the present invention can also be applied to an elevator EV type pedestrian bridge.
The evacuation stage S has a planar shape, but may be a stepped shape like the climbing means 32 shown in the upper right column of FIG.
In addition, the evacuation stage S has a rectangular shape, but may have a deformed trapezoidal shape, a triangular shape, or a circular shape as shown in FIG.
Furthermore, one or a plurality of buffer piles 36 can be arranged in front of the evacuation stage S (the side where the tsunami is expected to come) so that the wrecked ship does not collide with the evacuation stage S directly. .

  Moreover, as shown in FIG. 7, you may comprise the evacuation stage S more than two stories.

  8 to 12 show another embodiment of a footbridge device with an evacuation stage. This embodiment functions as a pedestrian bridge during normal times, but in the event of an emergency such as a tsunami or flood, the evacuation personnel can be evacuated to a further evacuation stage in addition to the pedestrian bridge part during normal times. It can be increased and can be safely evacuated to a higher position. There are cases where the entire device is newly constructed and cases where the old footbridge is remodeled and the upper part is added.

  Reference numeral 501 denotes a roadway, reference numeral 502 denotes a main column, and the main column 502 is provided with a flange 502a at the lower end and anchored to a foundation 503 provided at a corresponding location across the roadway 501. Between the upper ends of these main columns 502, 502, a bridge case 504 is installed, a walking road surface 505 is laid in the interior, and a safety fence 506 is attached to the upper part. The safety fence 506 may be a cover made of a resin plate. The transfer housing 504 is provided with a groove-type exterior material, but most of the structure has a structure in which a steel material such as H steel is passed to the bottom thereof and the end portion is connected to the main column 502 as shown in FIG. . Other structures may be adopted.

  Reference numeral 508 denotes climbing means, which includes a staircase 509, a staircase body 510, and a safety fence 511, and communicates the sidewalk 512 and the walking road surface 505. Reference numeral 513 is a base provided at the lower end of the climbing means 508, anchored to the stair base 514, and 515 is an auxiliary column that is fixedly attached to the base 516 via a flange.

An evacuation stage S for emergency evacuation such as a tsunami or flood is constructed in such an existing or new pedestrian bridge. The evacuation stage S includes a stage housing 518 and a stage surface (evacuation surface) 519 similar to the transfer housing 504 and a safety fence 520 and is provided at a high position in parallel with the pedestrian bridge. The stage housing 518 is supported by a stage column 521, and the column 521 is anchored to the foundation 523 via a flange 522. Then, both ends of the pedestrian bridge and both ends of the evacuation stage S are connected by an escape stairs 524 with a handrail.
Further, as shown in FIG. 12, the main column 502 and the stage column 521 are connected and reinforced by a reinforcing beam 525.

While this pedestrian bridge with evacuation stage S is used as a pedestrian bridge as shown by the white arrow in the figure during normal times, the evacuation stage is located above the pedestrian bridge as indicated by the black arrow when a tsunami or flood occurs. Evacuation is possible by climbing S. The evacuation stage S may be the same height as the pedestrian bridge. However, if the evacuation stage S is sufficiently higher than the pedestrian bridge as in this embodiment, safety is guaranteed even if a tsunami higher than expected hits.
In addition, the evacuation stage S is safe in strength because the pedestrian bridge body resists as a structure behind the tsunami.

The evacuation stage S may be parallel to the pedestrian bridge body and have the same height and connected to each other by a connecting bridge. Moreover, a buffer pile may be arranged similarly to the above.
As shown in FIG. 9, when the central separation band 527 is provided, the pedestrian bridge and the evacuation stage S may be supported by central columns 528 and 529 erected from the separation band 527.
Further, as shown in the right column of FIG. 12, the crossover 504, which is a pedestrian bridge, and the evacuation stage S may have the same height level and may be connected by a joint 530. The joint portion 530 is a flat surface, but its width (a dimension in a direction perpendicular to the paper surface in the right column of FIG. 12) is as wide as the entire length of the footbridge and the evacuation stairs of FIG. It includes both a narrow bridge like 524. In this case as well, the pedestrian bridge includes both existing and new ones. The joint portion 530 may have a width that is substantially the same as the width of the pedestrian bridge, or may be wider than the pedestrian bridge as shown in the right column of FIG.

The perspective view which shows one Embodiment of this invention. The perspective view which shows other embodiment. The top view which shows the footbridge of FIG. The top view which shows other embodiment. The top view which shows other embodiment. The top view which shows other embodiment. The side view which shows other embodiment. The top view which shows other embodiment of the footbridge with an evacuation stage. The front view of the footbridge of FIG. The rear view of the footbridge of FIG. The bottom view of the footbridge of FIG. The right view of the footbridge of FIG .

2 ... Main strut 4 ... Overhead frame 5 ... Walking road surface 8 ... Climbing means 18 ... Stage strut .

Claims (2)

A main pillar is erected via a foundation at a corresponding point across the roadway on both sides of the roadway, and a bridge with a long quadrilateral walking road surface between the upper ends of both main pillars. A frame is constructed so as to straddle the roadway, and a one-way up-and-down type is formed between the both ends of the crossover frame and each sidewalk so as to form a downward slope along a direction in which a tsunami strikes is assumed. In addition, the pedestrian bridge body is constructed by connecting the lower climbing means, which is fixed up and down and supported by the auxiliary struts, with the corresponding positional relationship with the main strut in the front and rear direction, and this pedestrian bridge body At both ends corresponding to the roadway width direction of the crossover frame in the upper and lower climbing means that are inclined upward and facing the direction in which the tsunami is expected to come, are attached to form a pair of left and right, These upper and lower climbs From the upper end of the stage, a stage housing with a stage surface set higher than the walking road surface is installed horizontally in a state where it is extended in the direction in which the tsunami is expected to come, and an evacuation stage is configured. The evacuation stage is fixedly supported via an upper end of a stage column that is erected on the side of the footpath so that it is located on the front side where a tsunami attack of the main column is expected, and the stage column and the main column A pedestrian bridge characterized by being connected to each other by a connecting member . 2. The evacuation stage according to claim 1, wherein the evacuation stage is a front side on which a tsunami of a crossover body is assumed to have a stage housing having a long quadrilateral stage surface integrally connecting a pair of left and right lower climbing means. A pedestrian bridge that is arranged in parallel and spaced apart .

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