JPH0415845B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for installing a bridge girder construction device on a bridge pier.

[Conventional technology]

Conventionally, the bridge girder construction equipment was
A device disclosed in the publication No. 1 is known.

[Problem to be solved by the invention]

In the case of the conventional bridge girder construction equipment described above, it is necessary to pull out and fix the temporary girders across both the left and right sides of the piers arranged in series, so the width of the upper part of the piers in the left and right direction is made wide enough to accommodate the temporary girders. Therefore, there is a problem that the piers become larger and the cost of constructing the piers increases.

The object of the present invention is to provide a method for installing a bridge girder construction device that can advantageously solve the above-mentioned problems.

[Means to solve the problem]

In order to achieve the above object, in the method for installing a bridge girder construction device of the present invention, a support is placed at the upper corner of both the left and right sides of the pier 1, and is in contact with the lower surface of the support placed on the top of the pier and the side surface of the upper part of the pier. The brackets 2 provided with supporting sides are removably engaged, and the brackets 2 on both the left and right sides are connected via a connecting member 6 extending in the left-right direction at the upper part of the top of the pier 1, and then the bridge shaft After erection girders 3 are erected and fixed across the brackets 2 adjacent to each other in the direction, a self-propelled gate type crane 4 is attached to the left and right erection girders 3.
Place multiple units on a shelf.

〔Example〕

Next, the present invention will be explained in detail using illustrated examples.

The drawing shows one embodiment of the present invention, in which the lower surface of the support placed on the top of the pier and the side surface of the upper part of the pier are in contact with the upper corners of both left and right sides of the pier 1 before and after the bridge girder construction span. A connecting member 6 made of a PC steel rod is removably engaged with a steel bracket 2 having a supporting side surface, and a connecting member 6 made of a PC steel bar is arranged to extend in the left and right direction at the top of the pier 1. The connecting member 6 is inserted into the bracket 2 of
A washer 7 is fitted onto the protruding end of the nut 8.
are screwed together, and each bracket 2 is tightened and fixed to the pier 1 by the connecting member 6 and nut 8.

A work scaffold 9 is fixed to the outer surface of the bracket 2, and a steel erection girder 3 is installed across the brackets 2 arranged in the bridge axis direction (front-back direction) and is removably fixed with bolts or the like. A crane rail 10 is laid and fixed on the upper surface of the erection girder 3, and a plurality of self-propelled gate type cranes 4 are provided with a traveling drive device 11.
wheels are mounted on the rail 10.

A trolley rail 13 extending in the left-right direction is laid and fixed on the upper surface of the garter 12 extending in the left-right direction in the gate type crane 4.
A plurality of hoisting machines 15 are fixed to the self-propelled trolley 14 running above, and a lifting member 16 that is raised and lowered by each hoisting machine 15 includes a supporting member 17 that supports the lower surface of the bridge girder 5 and an upper part of the bridge girder 5. The center part of the hanging member 18 in the girder hanging device 20 is composed of a hanging member 18 disposed in the spar, a supporting member 17, and a hanging rod 19 detachably connected to both left and right sides of the hanging member 18, and The trolley 14 and the hoist 15 constitute an erection machine 21.

When constructing the bridge girder 5, the girder lifting tools 20 are
Both front and rear ends of the bridge girder 5 are supported through the bridge girders 5 to lift the bridge girder 5, each gate type crane 4 is run to pull out the bridge girder 5 to a predetermined position in the bridge axis direction, and then the erection machine 21 is moved laterally. After moving the bridge girder 5 to a predetermined position in the left and right direction, the hoisting machine 15 of the construction machine 21 is operated in the lowering direction to lower the bridge girder 5,
The bridge girder 5 is installed on the shoe 22 installed at a predetermined position on the bridge pier 1.

〔Effect of the invention〕

Since this invention is configured as described above,
This produces the effects described below.

Brackets 2, which have a lower support surface placed on the top of the pier and a support side surface abutted against the upper side of the pier, are removably engaged with the upper corners of the left and right sides of the pier 1, and The brackets 2 are connected via a connecting member 6 extending in the left-right direction at the top of the top of the pier 1, and then the erection girder 3 is erected and fixed across the brackets 2 adjacent in the bridge axis direction, and then the right and left Since a plurality of self-propelled gate type cranes 4 are mounted on the erection girder 3 of The erection girder 3 can be easily erected and fixed by using the bridge pier 1, which allows the bridge pier 1 to be made smaller and economically constructed. you can reuse them.

[Brief explanation of drawings]

The drawings show embodiments of the invention,
Figure 1 is a front view showing the bridge girder being erected, Figure 2 is a partially cutaway side view, Figure 3 is a front view showing an enlarged view of the bracket and the erection girder, and Figure 4. is its side view. In the figure, 1 is a bridge pier, 2 is a bracket, 3 is an electric girder, 4 is a self-propelled gate type crane, 5 is a bridge girder, 6 is a connecting member, 8 is a nut, 10
is a crane rail, 13 is a trolley rail,
14 is a self-propelled trolley, 15 is a hoisting machine, 20 is a girder hoist, and 21 is an erection machine.

Claims (1)

[Claims] 1. A bracket 2, which has a lower support surface placed on the top of the pier and a support side surface that abuts the upper side surface of the pier, is removably engaged with the upper corners of both the left and right sides of the pier 1, and A connecting member 6 that extends the bracket 2 in the left-right direction at the top of the pier 1.
Then, after erection girders 3 are erected and fixed across the brackets 2 adjacent in the bridge axis direction, a plurality of self-propelled gate type cranes 4 are mounted on the left and right erection girders 3. A method for installing a bridge girder construction device characterized by: