JPH06146214A - Temporary detour overpass for construction work - Google Patents

Abstract

PURPOSE:To ensure safety of pedestrians by assembling a detour overpass by means of bridge beams which are conveyed by a carrier, columns which support them, and parts such as staircase sections on sidewalk which requires construction work. CONSTITUTION:A bridge beam section 6, a column section 14, and a staircase section 24 are transported to the site of construction on sidewalk 1 by a carrier with crane. The, divided bridge beam members 7, 8 are connected to assemble the bridge beam 6, and the column sections 14 are set up at both ends. Then, after an upper staircase 25 is mounted at both ends of the bridge beam 6, brake is applied on a caster 15, an outrigger 16 is adjusted to obtain horizontal and vertical alignment of the whole bridge, and attachments such as fence on handrail 39 in the bridge beam section are mounted. An upper column 18 is elongated upward for a lower column 17 by using an automatic jack provided on the column 14. Further, an upper end of a lower staircase 26 is connected with a lower end of the upper staircase 25 to form the staircase 24, and a work space 23 for a work vehicle 4 is formed in the inside. Consequently, it is possible to ensure safety of pedestrians and carry out construction work without obstacle in the daytime.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary detour pedestrian bridge for construction.

[0002]

2. Description of the Related Art Conventionally, on a sidewalk along a road with heavy traffic in a city, various construction work is performed by avoiding the daytime when there are many pedestrians and blocking the sidewalk at night when there are few pedestrians. .

At this time, a safety fence is set up on a part of the roadway to make a temporary passage so that a guard man or the like can guide a pedestrian.

[0004]

However, when the construction is carried out at night while avoiding the time zone where there are many pedestrians as mentioned above, there are the following problems.

That is, the nighttime work is inevitably inferior in safety and efficiency to the daytime work as a whole, and the nighttime work is difficult to secure an employee because of poor working conditions. In addition, there is a serious problem that the construction cost increases due to the above.

In addition, when securing a temporary traffic route on the road,
There is a problem in that it takes time and effort for the procedure, such as the need for notification to obtain approval from related organizations.

In view of the above-mentioned circumstances, the present invention provides a temporary detour pedestrian bridge for construction in which daytime construction can be performed without hindrance by allowing pedestrians to pass safely even when there are many pedestrians. It is intended to be provided.

[0008]

According to the present invention, a bridge girder portion having a working space placed on a sidewalk and arranged substantially parallel to the sidewalk, a pillar portion supporting both ends of the bridge girder portion, and both ends of the bridge girder portion are provided. A temporary detour pedestrian bridge for construction, comprising: a stairway part attached to the stairway part, and each part having a size capable of being loaded on a bed of a carrier.

[0009]

The operation of the present invention is as follows.

When parts such as bridge girders, columns, stairs, etc., which have been loaded and transported in a carrier, are assembled on a sidewalk, a temporary detour pedestrian bridge for construction having a working space inside is constructed.

Therefore, by allowing a pedestrian to pass through the temporary work detour pedestrian bridge, it is possible to work inside the temporary work detour pedestrian bridge even during the daytime.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 10 show an embodiment of the present invention.

In the figure, 1 is a sidewalk, 2 is a roadway, 3 is a carrier such as a 4-ton truck with a crane, and 4 is a working vehicle such as a backhoe.

Further, 5 is a temporary detour pedestrian bridge for construction, 6 is a bridge girder portion which constitutes the temporary detour pedestrian bridge 5 for construction, and the bridge girder portion 6 is composed of two divided bridge girder members so that they can be loaded on the carrier 3. It is divided into 7 and 8 and is connected and fixed by a bolt 9 or the like.

Numeral 10 is a hoist for moving excavated earth and sand provided so as to be movable along the bridge girder portion 6, 11 is an eaves frame mounted on both sides of the bridge girder portion 6, and 12 is installed between the tips of the eaves frame 11. The curtain rail 13 is a sheet suspended from the curtain rail 12.

Reference numeral 14 denotes a support column which supports both ends of the bridge girder 6, and the support column 14 is a substantially U-shaped lower support column 17 having a caster section 15 and an outrigger section 16 at its lower end. A substantially inverted U-shaped upper strut portion 18 slidably fitted on the lower strut portion 17 and an upper and lower strut portions 17, 18 are interposed to extend and retract the strut portion 14 in the vertical direction. Manual or automatic jack part 1 for
9 is mainly configured, and a bracket 20 provided at both ends of the bridge girder portion 6 and a bracket 21 provided at an upper end of the upper strut portion 18 are fitted with a pin 22 so that they are connected to each other. A work space 23 for the work vehicle 4 is formed inside.

Reference numeral 24 is a staircase portion attached to both ends of the bridge girder portion 6. The staircase portion 24 is divided into an upper staircase portion 25 and a lower staircase portion 26 so that it can be loaded on the transport vehicle 3, and the staircase portion 24 is divided into both. By inserting a pin 29 between the brackets 27 and 28 provided, they are integrally connected.

Reference numeral 30 denotes a staircase support portion attached to the upper strut portion 18 via brackets 31 and 32 and a pin 33, and a bracket 34 attached to an upper end portion of the upper staircase portion 25 and a staircase support portion. By inserting the pin 36 between the bracket 36 and the bracket 35 attached to the upper end of the portion 30, the stair portions 24 are attached to both ends of the bridge girder portion 6.

Reference numeral 37 is a bridge girder reinforcing member which is pin-connected between the bridge girder portion 6 and the upper strut portion 18, and 38 is an upper step portion 25.
The staircase reinforcing member is connected between the upper support portion 18 and the upper support portion 18.

Reference numeral 39 is a bridge girder handrail fence, 40 is a staircase handrail fence, 41 is a caster portion provided on the upper staircase portion 25 and the lower staircase portion 26, and 42 is a caster portion provided on the lower end portion of the staircase support portion 30. , 43 are wire members for adjusting the mounting angle of the eaves frame 11.

Next, the operation will be described.

As shown in FIG. 3, the bridge girder portion 6 and the column portion 1
4. Each member constituting the staircase portion 24 and the like is loaded on the bed of the carrier 3 such as two 4-ton trucks with cranes, and transported to the sidewalk 1 where the construction or the like is performed.

Then, as shown in FIG. 4, the above-mentioned members are unloaded on the sidewalk 1 using the cranes of the two transport vehicles 3, and the divided bridge girder members 7 and 8 are provided by the respective cranes as shown in FIG. The bridge girder members 7 and 8 are lifted and integrated by connecting them with bolts 9 to form a bridge girder portion 6, and the column parts 14 are located at both ends of the bridge girder portion 6 hung by a crane, and are provided at both ends of the bridge girder portion 6. The bracket 20 provided on the upper end of the upper strut portion 18 and the bracket 21 provided at the upper end of the upper strut portion 18 so as to connect the two, thereby further reinforcing the bridge girder portion between the bridge girder portion 6 and the upper strut portion 18. By connecting the members 37 with pins, the bridge girder portion 6 is made independent.

At this time, the hoist 10 is fixed so as not to move.

Next, as shown in FIG. 6, the upper staircase 25 is hoisted using the crane, and the bracket 35 at the upper end of the staircase support 30 is pin-connected to the upper support 18.
Pin 3 between the upper stair part 25 and the bracket 34 at the upper end part
6 is fitted, and the staircase reinforcing member 38 is connected between the upper staircase section 25 and the upper strut section 18 to attach the upper staircase section 25 to both ends of the bridge girder section 6.

Next, as shown in FIG. 7, the caster portion 15 provided on the column portion 14 is braked and the outrigger portion 16 is adjusted to adjust the verticality of the column portion 14, the bridge girder portion 6 and the upper staircase portion. The horizontal level of 25 is provided, and the bridge girder handrail fence 39 is fixed to the bridge girder portion 6, and the staircase handrail fence 40 is fixed to the upper staircase portion 25 and the lower staircase portion 26 with bolts or the like.
Furthermore, the eaves frame 11 and the curtain rail 12 are attached to the bridge girder portion 6.
Install.

Further, as shown in FIG. 8, the manual or automatic jack portion 19 provided on the supporting column portion 14 slides the upper supporting column portion 18 upward with respect to the lower supporting column portion 17 to move the supporting column portion 14 upward. The bracket 27 at the lower end of the upper staircase 25 and the lower staircase 2 which are extended and lifted at this time
6 By inserting the pin 29 between the brackets 28 at the upper end portion, the staircase portion 24 is integrally connected, and the construction temporary detour pedestrian bridge 5 having the working space 23 for the work vehicle 4 such as the backhoe is formed inside. .

According to the present invention, even if there are a large number of pedestrians, it is possible to safely pass the temporary detour pedestrian bridge 5 for construction without feeling anxiety, and at the same time, work formed inside the temporary detour pedestrian bridge 5 for construction. Since the work can be performed in the space 23, the work can be performed during the daytime without any trouble.

In the construction, the sidewalk 1 is excavated by the work vehicle 4 such as a backhoe, the excavated earth and sand is hoisted by the hoist 10, and the hoist 10 is moved along the bridge girder portion 6 to efficiently remove the earth and sand. It can be carried out.

Further, by hanging the sheet 13 on the curtain rail 12 as required, it is possible to blind the construction, prevent noise, prevent dust from scattering, and shade the operator.

Further, when the work on a specific part of the sidewalk 1 is completed and the work is transferred to another part, as shown in FIG. 9, the lower staircase part 26 is separated from the upper staircase part 25 and the jack part is formed. 19 is operated to contract and move the pillar portion 14,
Release the outrigger part 16 and caster part 1
The brake of No. 5 is released, and further, as shown in FIG.
After separating the bridge girder section 6 and the upper staircase section 25, the work girder 4 such as a backhoe is used to transport the bridge girder section 6, the upper staircase section 25, and the lower staircase section 26 to a desired location, and the procedure opposite to the above. Assemble with

When the construction is completed, the respective parts are disassembled as shown in FIG. 4, and the carrier 3 is loaded and unloaded as shown in FIG.

The present invention is not limited to the above embodiment, but an intermediate member forming a landing may be provided between the upper staircase portion 25 and the lower staircase portion 26, or
Instead of connecting the upper staircase portion 25 and the lower staircase portion 26 linearly, the upper staircase portion 25 and the lower staircase portion 26 may be connected at an angle depending on the installation location, and other various changes are made without departing from the scope of the present invention. Of course, it is possible to add.

[0035]

As described above, according to the temporary detour pedestrian bridge for construction of the present invention, pedestrians can safely pass through even when there are many pedestrians, so that daytime construction can be carried out without trouble. That is, the excellent effect can be achieved.

[Brief description of drawings]

FIG. 1 is an overall side view of an embodiment of the present invention.

FIG. 2 is a view taken along the line II-II of FIG.

FIG. 3 is a diagram showing a state in which the temporary detour pedestrian bridge for construction of the present invention is disassembled and loaded on a carrier.

FIG. 4 is a diagram showing a state in which FIG. 3 is unloaded from a transport vehicle.

5 is an assembly process diagram of FIG. 1. FIG.

FIG. 6 is an assembly process diagram following FIG. 5;

FIG. 7 is an assembly process diagram following FIG. 6;

FIG. 8 is an assembly process diagram following FIG. 7;

9 is a travel process diagram of FIG. 1. FIG.

FIG. 10 is a movement process diagram continued from FIG. 9;

[Explanation of symbols]

 1 Sidewalk 3 Transport Car 6 Bridge Girder 14 Prop 23 Work Space 24 Stairs

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Toji Tsuji, Toyama, Koto-ku, Tokyo 3-chome 1-15 Ishikawajima Harima Heavy Industries Ltd. Toji Technical Center (72) Inventor Masayuki Ogino Toyosu, Koto-ku, Tokyo 1-215 Ishikawajima Harima Heavy Industries Co., Ltd. Toji Technical Center (72) Inventor Moriya Yoshiro 2-2-1 Otemachi, Chiyoda-ku, Tokyo Ishi Kawashima Harima Heavy Industries Co., Ltd. Head Office (72) Inventor Mitsuru Goto Nihon Telegraph and Telephone Corporation 1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo (72) Inventor Okaji Oku 1-1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Inventor Sato Keijiro 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Inventor Osamu Nakajima Chiyo, Tokyo 1-6-1, Saichocho, Ta-ku, Japan Nippon Telegraph and Telephone Corp. (72) Inventor, Osaka, 3-3, Sarugaku-cho, Shibuya-ku, Tokyo, Japan Telegraph and Telephone Construction Association

Claims (1)

[Claims] 1. A bridge girder portion provided with a work space on the sidewalk and arranged substantially parallel to the sidewalk, a pillar portion supporting both ends of the bridge girder portion, and a stair portion attached to both ends of the bridge girder portion. A temporary detour pedestrian bridge for construction, characterized in that each of the above-mentioned parts is configured to have a size capable of being loaded on a bed of a carrier.