JPH06101213A - Rotary erection of arch - Google Patents

Abstract

PURPOSE:To have excellent execution efficiency and safety and to minimize the traffic control of an aerial wiring section by performing the title election simultaneously in the direction of the width. CONSTITUTION:A pair of pin keepers 8a and 8b are placed on an arch foundation provided to a specific position in advance, one end of an arch B is connected to the pin keeper 8a nearer thereto of both pin keepers 8a and 8b through a pin and, at the same time, the each B is reversely built up. The front end of the arch B built up is reached to the forward pin keeper 8b of both pin keepers 8a and 8b by a crawler crane A while revolving with the pin nearer to the arch B as the center and is connected to the pin keeper 8b through a pin.

Description

Detailed Description of the Invention

[0001]

[Field of Industrial Application] The present invention and railroads and roads, roads and roads, etc., requiring a grade separation, or bridges in places where there are frequent traffic of ships in rivers, canals, or the like. The present invention relates to a method of constructing an arch as a security protection and supporting member which is applied when protective work is required.

[0002]

2. Description of the Related Art Conventionally, in this type of construction method, a large number of supports have been used to lay an arch member at a predetermined position.

[0003]

Therefore, the work is complicated and there is a problem in safety, and the assembly place must be wide.
In the case of an overpass, there were problems such as long interruptions in traffic over the overpass. The present invention has been proposed in view of the problems of the above-described conventional technology, and the object of the present invention is workability,
The safety is excellent, and the traffic interruption at the overpass can be minimized.

[0004]

In order to achieve the above object, according to the method for rotating and installing an arch according to the present invention, a pair of pin pedestals is installed on an arch foundation which is installed in a predetermined position in advance. Then, one end of the arch is connected to the pin pedestal on the front side of the both pin pedestals via a pin, the arch is assembled upside down, and then assembled by using a crane or winch as described above. While rotating the arch around the pin on the front side, the tip of the arch is made to reach the front pin receiving base of the both pin receiving bases, and the other end of the arch is connected to the receiving base via the pin. is there.

[0005]

According to the present invention, the arch foundation is installed in advance at the installation position of the arch, and the front and rear pin pedestals to which one end and the other end of the arch are respectively connected are installed. Every other time, one end of the arch to be erected on the pin pedestal on the front side is connected via a pin, and the arch is assembled upside down so that the upper side is an arc shape,
Then, while rotating the arch assembled as above using a crane or winch, centering on the pin on the front side, let the other end of the arch reach the pin pedestal in the front, and pin it to the pedestal. By connecting the other ends of the arches via the, the arches are collectively installed in the width direction.

[0006]

Embodiments Embodiments shown in the drawings in which the present invention is applied to the construction of an overpass will be described below. Reference numeral A denotes a crawler crane. A vehicle body 3 is rotatably mounted on a swivel base 2 mounted on a crawler 1, and a crane boom 4 is rotatably supported on the vehicle body 3. In the figure, 5a, 5c, 5d, 5e and 6 are an arm and a column for smoothly performing the tilting of the crane boom 4 in a stable state.

When constructing the overpass, an arch foundation is installed, tie beams 7 are erected on both sides of the arch portion, and a pair of pin pedestals 8a and 8b are installed on the tie beam. Then, as shown in FIG. 1, while assembling the pin pedestal on the front side and one end of the arch B, the arch B is assembled in a reverse arch shape so as to open toward the traveling direction side of the crawler crane A, The crawler crane A is moved in the direction of the arrow in FIG. 1 and the crane B is used to rotate the thus-assembled arch B, and the other end of the arch B is connected to the front pin support 8b. Then, the pin receiving base 8b and the other end of the arch B are connected via a pin.

FIGS. 4 and 5 show an overpass constructed by applying the above method, where C is a steel deck girder portion of the overpass, and D is a balustrade.

[0009]

As described above, according to the present invention, a pair of pin pedestals is installed on the arch foundation previously set at a predetermined position, and the pin pedestal on the front side of the two pin pedestals is installed. Connect one end of the arch via a pin, assemble the arch upside down, and then use a crane or winch to rotate the arch assembled upside down as described above with the pin on the front side as the center. However, the tip of the arch is made to reach the pin pedestal in the front of the both pin pedestals, and the arch is erected by connecting through the pins, and thus the ridge is laid all together in the width direction, thereby straddling the bridge. Minimize traffic blockage of parts and improve safety by avoiding the use of a large number of supports as in the past, simplifying the work and requiring less space for assembly. Those capable of suppressing to a minimum.

[Brief description of drawings]

FIG. 1 is an elevational view showing an implementation state of an embodiment of a method of rotating and installing an arch according to the present invention.

FIG. 2 is a side view showing details of FIG.

FIG. 3 is a plan view of FIG.

FIG. 4 is an elevational view of an overpass constructed by the method of the present invention.

FIG. 5 is a plan view of FIG. 4, in which the right half shows the frame and the left half shows the pavement completed state.

[Explanation of Codes] A Crawler Crane B Arch C Steel Bridge Deck Girder of Overpass D Trawl 1 Crawler 2 Swivel 3 Body 4 Crane Boom 5a Arm 5b Arm 5c Arm 5d Arm 5e Arm 6 Strut 7 Tie Beam 8a Pin Holder 8b Pin Received Stand

Claims (1)

[Claims] 1. A pair of pin pedestals are installed on an arch foundation that is installed in advance at a predetermined position, and then one of the two pin pedestals is connected to the pin pedestal on the front side through a pin. While connecting them, assemble the arch upside down, then rotate the arch assembled as described above by using a crane or winch around the pin on the front side so that the arch tip is in front of the both pin pedestals. A method for rotating and constructing an arch, characterized in that the other end of the arch is connected to the pedestal via a pin.