JPH0376367B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a mobile construction device used when constructing elevated structures such as bridges by the cantilever beam construction method.

[Prior art]

Conventionally, the cantilever beam construction method has been widely adopted when constructing elevated structures such as bridges.

This cantilever beam construction method involves installing a mobile construction device on top of the column, which is equipped with a pair of removable rails, a construction mechanism and a moving means that are movably arranged on these rails via front and rear wheels. The construction mechanism suspends and supports the shoring and formwork, and the tip block, which is prestressed by pouring concrete into the formwork, is extended, and then the construction mechanism is jacked up to extend the construction. After replacing the rail on top of the tip block and moving the construction mechanism to the relocated rail section, the next tip block is formed.
Thereafter, the elevated structure is constructed by sequentially extending the next tip block to the tip block in the same manner as described above.

[Problem that the invention seeks to solve]

By the way, when constructing, for example, a plane curved elevated structure α as shown in FIG. 5 using the above-mentioned mobile construction device, the construction mechanism 1 Assuming that the axis of each rail is on line A, the rails 3 and 3 are replaced on the extended first end block, and the rear part of the construction mechanism 1 is moved from the I block to the first end block along the rail. However, since each rail 3, 3 is a single rail, it can only be laid on the extension line of the front fulcrum C (front wheel) and the rear fulcrum D (rear wheel), that is, on the line A.

For this reason, it is necessary to readjust the construction mechanism after the construction mechanism is moved, and therefore, the amount of adjustment in the lateral direction is relatively large, and the adjustment work is also troublesome. Therefore,
As a means to alleviate this, one rail is bent approximately into a planar curve, but in this case, there are problems such as the planar curve changes or it cannot be applied to structures with S-curves. Ta.

[Means to solve problems]

Therefore, in this invention, in order to solve the above-mentioned problems, each rail in the above-mentioned mobile construction device is divided into a rail for the front support means and a rail for the rear support means, and the front support means is slid on the construction mechanism. the rear support means is formed by wheels;
The purpose is to omit or simplify the adjustment work in the lateral direction when moving the construction mechanism by adjusting the relationship between the divided rails and each support means.

In this case, it is preferable to use Teflon resin as the sliding member.

[Effect]

In the movable construction device according to the present invention, the front sliding member of the construction mechanism is arranged on the front support means rail, and the rear wheel is arranged on the rear support means rail, and the front sliding member and the rear wheel are respectively disposed on the front support means rail and the rear support means rail. Lateral adjustment is also possible when constructing an elevated structure with a planar curved line, including a wide range of planar curves or S-curves, by moving and laying rails separately and using these front and rear support rails, sliding members, and wheels. It is designed to simplify or simplify the work.

〔Example〕

Next, preferred embodiments of the mobile construction device according to the present invention will be described in detail below with reference to the accompanying drawings.

1 to 3, a mobile construction device 10 according to the present invention includes a construction mechanism (hereinafter simply referred to as a traveler) 12 formed of a truss, a sliding member 14 made of Teflon resin, and wheels 16.
A pair of rails 2 via a support means 18 consisting of
0, 20, and the structure is constructed by sequentially moving this traveler 12 with a propulsion jack device 22, and holds the front rail 24 and wheels 16 that support the sliding member 14 of each rail 20. When moving the traveler, the divided rails 24, 26 and the support means 1 are divided into a rear rail 26 and a rear rail 26.
8, it is configured such that adjustment work in the lateral direction can be omitted or simplified.

The traveler 12 includes a sliding member 14 and wheels 1
Hydraulic jacking devices 30 and 32 as reaction force receivers are provided at predetermined locations on the lower chord member 28 of the truss in which the truss 6 is arranged, and formwork supports 36 are provided on the upper chord member 34.
It is configured to suspend and support.

Further, the propulsion jack device 22 includes a lower string member 28
It consists of a separate type, for example, a center hole jack installed on the sliding member mounting portion 38 of It is inserted into a threaded steel rod 42 to propel the traveler 12. Note that a guide member 44 for the front rail 24 of the sliding member 14 is provided on the inner side of the sliding member 14.
are arranged with a predetermined gap in between (see FIGS. 2a and 2b).

On the other hand, the wheels 16 as rear support means are formed by a pair of wheels 16a and 16b which are sandwiched between a rear rail 26 having an I-shaped cross section with a predetermined gap between them. The structure is such that the traveler 12 can be smoothly moved even when the laying direction is different. In addition, if the directions of the respective axes are so different that the traveler 12 cannot move smoothly, the lateral adjustment plate 46 with biased holes of a predetermined shape is inserted between the lower chord member 28 at the wheel mounting portion 48 and the horizontal member 50.
It is preferable to facilitate the movement of the traveler 12 by interposing the traveler 12 between the traveler 12 and the traveler 12 (see FIGS. 3a and 3b).

It goes without saying that as an alternative for smoother movement of the traveler 12, the aforementioned sliding member 14 and the wheels 16 can be attached to the traveler 12 via a pivot.

In addition, in FIG. 3b, reference numeral 52 is a lateral feed device that performs fine adjustment of the wheel 16 in the lateral direction with respect to the rear rail 26.

Next, a case will be described in which, for example, a planar curved elevated structure β as shown in FIG. 4 is constructed using the mobile construction device 10 according to the present invention configured as described above.

That is, when the first tip block is constructed, the axis of the traveler 12 is on the B line, the front rail 24 is on the A line of the first tip block, and the rear rail 26 is on the D line. When constructing the first end block after the extension of the first end block is completed, first, the traveler 12 is jacked up using the jacking devices 30 and 32, and the front rail 2
The rear rail 26 is placed on the B line of the extended end block, and the rear rail 26 is placed on the E line of the I block.
If the traveler 12 is repositioned on the line and the traveler 12 is jacked down, the center hole jack 22 is driven to move the traveler 12 a predetermined distance, the axis of the traveler 12 is automatically aligned on the C line, and lateral adjustment can be performed. The construction of the first tip block can be carried out without any problems. At this time, if a slight adjustment is required due to the installation error between the front rail 24 and the rear rail 26, the sliding member 14 serving as the front support means is moved laterally on the front rail 24, and the traversing device 52 is moved. The wheel 16 may be adjusted with respect to the rear rail 26 by operation.

Further, if the axial direction of the traveler 12 and the installation direction of the rear rail 26 are significantly different, lateral adjustment is performed in advance using an adjustment plate 46 inserted between the lower chord member 28 and the horizontal member 50.

It goes without saying that the present invention is not limited to the above-described embodiments, and that various design changes can be made without departing from the spirit of the present invention.

〔effect〕

As described above, according to the mobile construction device according to the present invention, each rail is divided into a front rail and a rear rail, and the support means of the construction mechanism is formed by a sliding member and a wheel, and the divided rails are divided into a front rail and a rear rail. By laying them separately, the wheels and sliding members could be aligned in the direction of movement of the construction mechanism, so that
It not only allows the construction of elevated structures with a wide range of curved plane shapes without changing the shape of the rails, but also offers various advantages such as the ability to omit or simplify the lateral adjustment of the construction mechanism. have

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing the relationship between the mobile construction device according to the present invention and the elevated structure constructed by this mobile construction device, and Fig. 2a shows the relationship between the sliding member and propulsion jack device of the traveler and the front rail. Fig. 2b is a side explanatory view of Fig. 2a,
Fig. 3a is a side explanatory view of the main part showing the relationship between the wheels and rear rail of the traveler, Fig. 3b is a side explanatory view of Fig. 3a, and Fig. 4 is a planar curved elevated elevated structure created by the mobile construction device according to the present invention. FIG. 5 is an explanatory plan view when constructing an object. FIG. 5 is an explanatory plan view when constructing an elevated structure having a curved plane shape using a conventional moving construction device. 10... Mobile construction device, 12... Traveler,
14... Sliding member, 16... Wheel, 18... Supporting means, 20... Rail, 22... Jacking device,
24...Front rail, 26...Rear rail, 28
... Lower string member, 30 ... Jacking device, 32 ...
Jacking device, 34...Top string member, 36...Form support, 38...Sliding member mounting portion, 40...Support member, 42...Fully threaded steel bar, 44...Guide member, 46...Adjustment plate , 48...Wheel attachment part, 50...Transverse feed device.

Claims (1)

[Scope of Claims] 1. A construction mechanism is disposed on a pair of rails that are removably disposed above the column head via front and rear support means, and this construction mechanism is sequentially moved by a moving means to construct an elevated structure. In a mobile construction device that constructs things,
An elevated structure characterized in that each rail is divided into a rail for front support means and a rail for rear support means, and the front support means of the construction mechanism is formed by a sliding member, and the rear support means is formed by wheels. mobile construction equipment. 2. The apparatus for moving and constructing an elevated structure according to claim 1, which uses Teflon resin as the sliding member.