JP2013047453A - Pedestrian bridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pedestrian bridge enabling a refuge in the case of an emergency such as a tsunami, a flood and being capable of particularly making a lot of people refuge even in sections excepting a walking road surface.SOLUTION: Main supports are erected at positions opposite to each other with a driveway intervened in both pedestrian ways arranged on both sides of the driveway, respectively, and a crossing building frame having a long quadrilateral road surface is bridged between the upper ends of the main supports so as to cross the driveway. Ascending and descending means communicating the pedestrian way with a walking road surface is connected between each of both ends of the crossing building frame and each of the pedestrian ways in the state of being supported by auxiliary support, thus constituting a pedestrian bridge body. A stage frame having a stage surface is provided immediately above the crossing building frame and supported by the main supports, and refuge staircases which communicate both ends of the crossing building frame with both ends of the stage frame, respectively, are provided between the walking road surface and the stage surface.

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 laid over the roadway, and the sidewalk and the walking road surface are communicated between both ends of the crossover frame and each sidewalk. The pedestrian bridge body is constructed by connecting the climbing means supported by auxiliary columns, and a stage frame with a stage surface is provided immediately above the crossover frame in the pedestrian bridge body. In addition to being supported, an escape stairway is provided between the walking road surface and the stage surface so as to connect both ends of the crossover housing and both ends of the stage housing.

  According to the present invention, the main struts are erected via the foundations at the corresponding locations across the roadway on each sidewalk disposed on both sides of the roadway, and between the upper ends of both main struts, a long quadrilateral shape is provided. A crossover frame having a walking road surface was constructed so as to straddle the roadway, and between the both ends of the crossover frame and each sidewalk, climbing means for connecting the sidewalk and the walking road surface was supported by auxiliary columns. The pedestrian bridge main body is configured by being connected in a state, and a stage skeleton having a stage surface is provided immediately above the bridge skeleton in the pedestrian bridge main body and supported by the main support column, and the walking road surface and the stage Since it is characterized by evacuation stairs that connect both ends of the crossover frame and both ends of the stage frame, it is possible to evacuate in the event of an emergency such as a tsunami or flood, Especially walking surface It is possible to provide a pedestrian bridge that can evacuate a lot of people also outside.

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 thru | or FIG. 5 shows one Embodiment about the footbridge apparatus 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. This device has an evacuation stage directly above the pedestrian bridge.

  Reference numeral 531 denotes a roadway, reference numeral 532 denotes a main column, and the main column 532 is provided with a flange 532a at the lower end and anchored to a foundation 533 provided at a corresponding position across the roadway 531, and each pair is erected. Between the upper ends of these main columns 532 and 532, a bridge case 534 is laid, a walking road surface 535 having a long quadrilateral shape is laid therein, and a safety fence 536 is attached to the upper part. The safety fence 536 may be a cover made of a resin plate. The transfer housing 534 is provided with a groove-type exterior material, but most of the bottom is provided with a steel material such as H steel as shown in FIG. 4 (bottom view), and its end is connected to the main column 532. It has become. Other structures may be adopted.

Reference numeral 538 denotes an ascending / descending means that can be ascended and descended from both directions.
The type which can go up and down only in one direction may be sufficient. The climbing means 538 includes a staircase body 539, a staircase body 540, and a safety fence 541, and communicates the sidewalk 542 and the walking road surface 535. Reference numeral 543 is a base provided at the lower end of the climbing means 538, anchored to the stair base 544, and 545 is an auxiliary column that is fixedly attached to the base 546 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 is provided with a stage housing 548 having a slightly shorter long quadrilateral shape than the transfer housing 534 and a stage surface (evacuation surface) 549 and a safety fence 550, which is parallel to and directly above the footbridge. Is provided. The stage housing 548 is supported by the main support column 532, and evacuation stairs 552 that can be ascended and descended from the pedestrian bridge are provided at both ends of the housing 548.
As shown in FIG. 5, the main struts 532 are connected and reinforced by reinforcing beams 553.

These pedestrian bridges with evacuation stage S are used as pedestrian bridges as shown by the white arrows in the figure during normal times, as shown in FIGS. 1 and 2, while pedestrian bridges are used as black arrows in the event of a tsunami or flood. Evacuation is possible by climbing to the evacuation stage S, which is the upper floor. Since the evacuation stage S is sufficiently higher than the pedestrian bridge, safety is guaranteed even if a tsunami higher than expected hits.
Since a pair of main columns 532 are provided on each of the left and right sides, the resistance to tsunami is large, but one may be provided on each of the left and right sides.

  In addition, as shown in FIG. 2, when the center separation zone 555 is provided, you may make it support the footbridge and the evacuation stage S by the center support | pillar 556 standing from the separation zone 555. In this case, there may be two central support columns 556 in the front and rear, and in that case, the main support columns 532 may be provided one by one or two in the front and rear.

The same applies to the embodiments of FIGS. 6 and 7 and the following embodiments. For example, the ladder portion 99 in FIG. 7 is provided with a sliding portion 104 such as a virtual line so that it functions as a slide during normal times. You may give it. In this case, a scroll 105 made of a non-slip fabric is provided on the evacuation unit 100 so that it is fixed at one end, and in the case of a tsunami, the scroll 105 is fed out toward the surface of the sliding unit 104. A non-slip surface may be provided. The non-slip surface in this case is effective in an emergency where, for example, a wheelchair with a bedridden elderly person is climbed.
Further, as shown in the right column of FIG. 7, the ladder portion 99 may be a side-by-side type as a slope 108 for climbing the other side with a sliding surface 107 on one side. In this case, the slope 108 may be steeply inclined for the play, while the slope 108 may be gently inclined. Furthermore, as shown in the right column, the center between the widths may be formed as a sliding surface 107 and both sides thereof may be formed as climbing slopes 108. K is a wheelchair.
Furthermore, although the ladder portions are arranged on both the front and rear sides of the apparatus, only one of them may be a ladder portion and the other may be a slope. The slope in this case includes both a slip surface and an evacuation climb.

In the embodiment shown in FIG. 8, the whole has an arch shape, and the main body 110 includes a pair of arch-shaped main frames 111 and a ladder portion 112 and an evacuation portion 113 therebetween, and includes safety fences 114 on both sides.
The main body 110 is fixed by directly embedding the lower portions at the front and rear ends thereof in the soil. A widening frame 115 may be provided for stabilization, or the main frame 111 may be widened as shown in the right column.

  In the embodiment of FIG. 9, the entirety is an arch-shaped main body 118, but the safety fence 119 passes through the center of the width instead of both sides. Also in this case, the main body 118 may be widened and may be pulled by the wire 120 for stabilization. 121 is a ladder part, 122 is an evacuation part.

The embodiment shown in FIG. 10 is a main body having a more stable bifurcated main frame 125, 126 is a ladder portion, and handrails 127 are provided on both sides thereof. Reference numeral 128 denotes an evacuation unit. In this embodiment, a large enough space allows many neighbors to evacuate. Reference numeral 129 denotes a wire.
In addition, although the ladder part 126 in the embodiment is provided in four rows, for example, A can be freely selected as a slide or B as a climbing slope.

  In the embodiment of FIG. 11, the main body 132 is formed by a single main frame 133, and the lower ends of both ends of the main frame 133 bent into a trapezoid are fixed to the ground by embedding fixing or the like, and its supporting leg portions A ladder part 135 and a stair railing 136 are provided along 134, a frame body 138 is attached to the base part 137, and the evacuation part 139 is fixed, and safety fences 140 are provided on both sides thereof. In this case, an auxiliary support leg 141 may be provided like a virtual line to make it more stable.

12 and 13 show another embodiment, FIG. 12 is a facility side view as viewed from the X direction in FIG. 13, and FIG. 13 is a facility rear view as viewed from the Y direction in FIG. It is.
The facility shows an example of a prospect and evacuation facility that can be viewed during normal times and can accommodate about 200 people as an evacuation stage in the event of an emergency such as a tsunami or flood.

Assuming that a tsunami hits the facility from the right side of FIG. Three steel struts 450 are erected on the front side and the back side, respectively, and two columns of front and rear columns 450 are erected between the front and back in the same manner. The front, rear, left and right are interconnected by beams and girders (not shown). Each support 450 is fixed to the foundation.
The first floor portion is configured as a parking lot 451, and the vehicle can enter and exit both front and rear and left and right.

Reference numeral 452 denotes a first escape staircase, and reference numeral 453 denotes a second escape staircase. A second-floor floor 454 and a third-floor floor, which is an observation / evacuation stage 455, are laid, and an outer wall 456 is provided on the entire outer periphery.
The second floor part is partitioned into a second floor use room 457 such as an evacuation room (meeting place), kitchen, warehouse, etc., and the third floor part is a slightly higher outer wall 456 so that the person to view is safe. In addition to being surrounded, it is covered with a roof structure 458 so that it can be viewed even when it rains.

  It is assumed that the tsunami hits from the right side of FIG. 12, and in order to prevent the hit energy from directly hitting the facility and causing damage, the front of the facility is located in front of the column 450. Correspondingly, a plurality of buffer piles 459.

  This buffer pile 459 is anchored on a deeply embedded foundation 460. The buffer pile 459 may be a metal pipe or a concrete containing a reinforcing bar. It may be wood.

  The surface where the tsunami of the landing of the first evacuation stairs 452 attacks is a railing rail, but this surface may only cause damage to the evacuated people if the tsunami attacks In addition, there is a risk of attacking up to the second floor 454 through the stairs, so it is effective to have a strength surface that acts against and blocks the tsunami. Therefore, the same strength surface is preferably a curved surface as viewed from above or a surface protruding forward in a mountain shape.

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. The perspective view of the tsunami evacuation simple apparatus which shows other embodiment. The perspective view of the tsunami evacuation simple apparatus which shows other embodiment. The perspective view of the tsunami evacuation simple apparatus which shows other embodiment. The perspective view of the tsunami evacuation simple apparatus which shows other embodiment. The top view of the tsunami evacuation simple apparatus which shows other embodiment. The perspective view of the tsunami evacuation simple apparatus which shows other embodiment. The side view which shows other embodiment as a X arrow directional view of FIG. FIG. 13 is a view taken in the direction of arrow Y in FIG. 12.

  531: Roadway 532: Main column 534: Crossing frame 535: Walking road surface 538 ... Ascending / descending means 542 ... Sidewalk 545 ... Auxiliary column S ... Evacuation stage 548 ... Stage frame 549 ... Stage surface 552 ... Evacuation stairs.

Claims (1)

  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 the climbing means for connecting the sidewalk and the walking road surface is connected between both ends of the crossover frame and each sidewalk in a state supported by an auxiliary column. The pedestrian bridge body is configured, and a stage housing with a stage surface is provided immediately above the crossover housing in the pedestrian bridge body and supported by the main support column, and between the walking road surface and the stage surface The pedestrian bridge is characterized in that evacuation stairs are provided to connect both ends of the crossover frame and both ends of the stage frame.

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