JPS5968401A - Construction of pc beam - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a 20-digit (molar rail) installation method.

When installing an elevated track such as a mole rail, there are various ground obstacles in the installation site. These terrestrial obstacles include rivers, oceans, expressways, and railways, but in order to lay 20 girders over these obstacles, it is not possible to supply the 20 girders from the ground using a crane or the like.

For this reason, in the past, a number of construction methods have been proposed for Spar 7, which has obstacles on the ground, mainly using a sturdy hand-stretching machine, but all of these construction methods are difficult, and in addition, There were problems such as the construction was difficult because it required heavy equipment, and it required a lot of labor and time.

The present invention was made in view of these circumstances, and it is possible to efficiently install 20 digits using a simple yet rational construction method.
The aim is to save labor and shorten the construction period.

Next, the installation method of the present invention will be explained with reference to the drawings.

Figure a shows a mountain pass that shows the construction order of the construction method of the present invention.

To explain this four times using this diagram, we loaded and laid the sill C girder (3) from the ground to the bridge lane (2) between several pedestals (1) in good locations with no obstacles on the ground. A PC girder supply yard (4) will be provided at this location. Then, as shown in off-line diagram a, a crane (2) is used from the ground to unload and assemble a hand-rolling mill (5) having a length of approximately 100 cm between the two existing parallel PC girders (3). However, the manual stretching machine (5) is one in which a pilot truss is connected to a long girder.

In addition, as shown in Fig. 1, one of the gate structure lifting members (6α) is loaded onto the pedestal (1) using the crane (2), assembled and fixed, and then the hand stretching machine (5 ) on top of the gate structure transport trolley (two 20-digit delivery trolleys (gα) at the front and rear of the force 1)
, (b) are loaded and set, and the other gate structure lifting vehicle (6h) is mounted on the gate structure transporting cart (7) in a reduced state with the tag facing sideways, and the above-mentioned parallel Between the 20 digits (3) in Article 2, there is one PC digit transport trolley (Deα) in the front and rear.
, (?h) is loaded and set. Furthermore, it is natural to use a tru wire to hang the gate structure lifter (A/L) installed on the pillar (1), and the illustration of this tru wire is omitted in this embodiment. With the above steps, preparations for the PC girder erection are completed.

Next, move the front PC digit carrier (?cL) as shown in Figure C.
), the hand-rolling machine (5) is slightly raised at the rear, and the hand-rolling machine (5) is moved by the self-propulsion of this PC girder carrier (9α).
5) Send it forward and turn it into a hand rolling machine (5) as shown in figure d.
After the tip of the pedestal (/a) is advanced enough to protrude beyond the next pedestal (/a), move the roller on the pedestal (/a)... (not shown).
is replaced with a sandal, and the hand rolling machine (5) is fixed to the pillar (/α). At this time, the p used for feeding
The c-digit transport trolley (9α) returns to the supply yard (4) to transport the PC-digit.

Next, the other gate structure lifting machine (gate structure transport trolley carrying Ruri)
7) is self-propelled and passes through the existing gate structure lifting machine (6α) shown in figures cl and d, reaches the front pillar (lα), and lifts the gate structure (6 is tagged). As it rotates, it returns to its original state and is set on the pedestal (/a) as shown in Figure 6.Then, the gate structure transport trolley (the force is applied to the hand stretching machine (5) as shown in Figure 1) It moves to the vicinity of the tip and is fixed.At this time, the two feeding carts (gap,
(gb) is located at the rear of the hand rolling machine (5).

As shown in Figure 1, both PC girder transport carts (9α) lift and support both ends of the PC girder (3a) from the supply yard (4).
.

(f&) is the rear gate structure lifting machine (tα) as shown in Figure 4.
The PC girder (3α) is stopped in front of the winch of the Pb girder transport cart (9h) in front of it, and the front end of the PC girder (3α) is deposited onto the forward delivery cart (gC). And the above gate transport trolley (
As shown in Figure 1, the winch wire installed on the 7-inch winch is connected to the 3 ends of the PC girder (for the pulling action of this winch, and the PC girder transport trolley on the other side (for the self-propelled action of the 9-ri). As shown in Figure K, while feeding the PC girder (3α) forward, the rear part of the PC girder is deposited on the rear delivery trolley (g), and as shown in Figure K, the cargo is moved forward.

Set the girder (3α) at the specified erection position. Then, both PO girder carriers It (9α) have finished transporting the PC girder (3α).
1 (9h) returns to the above supply yard (4) to transport a single PC girder to be constructed over the same span.

Next, as shown in Fig. 1, both ends of the PC girder (3α) are lifted up by the both gate structure lifting machines (6α), <Ah), and the ground cutting is carried out by the feed-out cart (gC)t (gA). Then, this feeding cart (gαλ (Irh) is moved to the rear of the hand rolling machine (5).
The equipment used to lower the equipment to the location determined by the equipment, and install and identify the equipment between the two pillars (1) and (/α). (3b) in Figure 1 of Otsu is another pc digit.

Then, the single-mouth PC girder (3) with the same span is constructed in the same manner as the single-mouth PC girder (3a). PC digit (3α).

(3h) is constructed, both P
The C-girder transport cart (9α), (9) waits behind the hand-stretching machine (5) in preparation for the hand-stretching machine (5) to send it out.
As shown in the figure, the rear gate structure lifting machine (6a) is released in preparation for movement, and the returned gate structure transport trolley (7)
Carrying this gate structure lifting machine (6α), it is reduced in size and rotated, and the PC0 digit carrier C9G in front is moved to the rear of the hand-rolling machine (5) in preparation for hand-rolling machine delivery. Then, the rear PC 0 digit carrier (9) returns to the supply yard (4).Then, the process of Figures 0 to 1 is repeated. In the figure (gC) is installed on the leading column, This is a cart that carries rollers that guide the hand stretching machine (5) being fed out.

Fang-figure αI/'l'-'l'-ko is another p
C girder supply yard (1I).In a place with good ground conditions, pedestals (1) and (1) are installed so as to form a span larger than the normal PC girder length. A long PC girder (3) was installed between the pillars using a crane (2), and
A normal length P0 girder (3
) will be constructed. Above P'c girder (3), (3) above, 1',, as mentioned above, PC girder transport trolley (diα)
, (FA) is allocated. Pillar (1), (1
) The 20 girders (3α) were transported to the ground between P(l) and the treetop transport trolley (?α), which was waiting on the long PC girder (3). The supply yard (da α) can be used as shown in Figure 1.

Next, regarding the fangs 3 to S diagrams, the gate structure lifting machine (ba), (4
The details of h) will be explained below.

As mentioned above, these gate structure lifting machines (6α) and (AA)
It plays the role of lifting the PC girder set at the erection position, taking it over, and lowering it onto the pedestal. α0)
(10) is a frame whose front shape is gate-shaped, and at the front and rear of both sides of the frame (10), rond-shaped leg rods (10) that extend and contract by cylinders (Ill) provided on both sides are attached. Furthermore, a cylinder (131
There are continuous legs (a) that are folded at right angles to the left and right sides. The lower ends of the legs (14) are removably attached to mounting bodies θ that are detachably attached to both sides of the pedestal (1). In addition, the left and right mounting bodies 05) are connected to the tightening rods (
16).

Further, on the upper side of the frame (10), a lifting mechanism 08) equipped with a lifting device α force such as a chain block is provided in the middle. 09) in the figure is a hanging hook provided on the chain block aη. In addition, (3) in Fig. 3 is the existing p
girder a, (3 is the PC girder to be erected, dll) is the hanging metal fitting for 20 girders (3α), (5) is the hand rolling machine t (gα) is 1 (mounted on the hand rolling machine (5)) A is carried out with the 20-digit delivery cart.

Figure 5 shows the suspension of the gate structure (6α) and the leg rod (12) of (AA).
1 is compressed by the action of the cylinder aυ, and is carried on a stretcher by the gate structure transport trolley (car), and the leg I is bent outward at a right angle by the action of the cylinder (t3). The swing support device (7) of the gate structure transport cart (7) rotates sideways and passes under the other gate structure lifting machine as shown in Figure 1 c, d, -. In the figure, υ is a workbench, and 221 is a ramp.

Next, details of the gate structure transport trolley (7) will be explained with reference to Fig. 6.

This gate structure transport trolley (7) carries the reduced gate structure lifting machines (6α) and (th) as described above on a stretcher, and also uses the winch (7C) mounted on it to 1
It plays the role of pulling the PC girder that is to be laid, as shown in Figures 1 and 2. And this gate transport trolley (
7) is composed of the above-mentioned swing support device (7b), the above-mentioned winch (7C), and a drive device (7d),
As is clear from Figure 5, it runs on the rails (5α) laid on the hand stretching machine (5). Also, on this rail (5α) is the above-mentioned 20-digit delivery trolley (
Zaa) and (gb) are also on board.

rumor Next is the PC girder transport trolley (qa) for figures 7-2.

(Explain the details of the chestnut.

As is clear from the above description, these PC girder transport trolleys (qa>, (qb>) run on the existing parallel column PC girders and carry
It functions to transport the C girder to the erection site and to send out the PC girder.

(23) is a downward U-shaped trolley designed to hold the existing PC girder, one trolley (23) is equipped with a drive device (to), and the other trolley (23) is equipped with a hydraulic winch device (24).
It is equipped with. The upper ends of both carts (23) are connected by a frame rod (29), and the connecting portion is a rotatable equalizer one-type structure so that the back and forth movement of both carts (2) is absorbed. Also, both of the above trolleys (23
On the upper side of 1, there is a row of machined drive wheels C16) for self-propelling over 20 digits, and on both sides of the trolley (C), there are 20
It is preferable that the guiding stable wheels 0'7) are arranged in a row in the front and rear for guiding in contact with both sides of the girder, and that the guiding stable wheels 07) and the driving wheels ibl are made of rubber tires. Also, the beam rod (25
In the center of 1, the wire guide (28) of the hydraulic winch device (2 (a)) and the load block bracket are installed.
) is to be moved/acted.

Sword '10. //The figure shows the above-mentioned pedestal (1), (/
α), existing PO girder (3), gate structure lifting machine (6st (')
t Gate structure transport trolley (power, PC girder delivery trolley (gα
), (gh), hand rolling machine (5) and PC girder transport trolley (
The positional relationship and relative positional relationship of 9α) and (9') are added. These figures are detailed views of the state of OFF figure 1.

Thus, according to the present invention, the hand stretching machine 9.
Two gate structure lifters and one gate structure transportation trolley.

Two PC girder transport trolleys 2 Front and rear PC girder transport trolleys enable the erection of PC girders (molar rails) in the above-ground obstacle section, as well as the hand-stretching machine's feeding operation and the gate structure lifting machine's operation. It has excellent features such as alternate advancement, efficient supply and transportation of PC girders, and the ability to shorten the installation period.

[Brief explanation of the drawing]

Fang/Figures α to R are explanatory diagrams showing the procedure of the construction method of the present invention. Tooth diagram αT bl ”'-'T '-λ is another r
An explanatory diagram showing the configuration of the C-girder supply yard. Figure 3 is an interpolation (the front view of the lifting machine, the OFF diagram is a side view of the same as above, Figure 1 is a front view of the same in the reduced state, Figure 6 is the front view of the gate structure) Side view of the transport vehicle. The tooth diagram is a front view of the PC girder transport vehicle, the >-1 figure is a side view of the same as above, the fang 7 figure is a top view of the same as above, the fang lO figure is a detailed plan view of fang 1 figure 1, and the Figure 1 is a side view of the same as above.
+ (3), (3cL>-*epQ digit # (4L
(lIa)-s-: pc digit supply yard, (5)...
・Hand-rolling machine, (6α), (6h)...Hand-rolling machine, (7)
...Gateway transport trolley, (riα) ...Wire, (Za
), (gb)...PC shifter trolley, (?α),
(Tari... PC digit transport trolley. Patent applicant: Nippon Express Co., Ltd. Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 ((9 Ripen'

Claims (1)

[Claims] (α) When installing two parallel PA girders (molar rails) between pillars erected at predetermined intervals on the ground, (fi) Presence of obstacles on the ground FIPo girders will be installed between the piers that are not installed on the bridge using the conventional method, and this site will be used as a 20-girder supply yard.In addition, the existing PC girder will be installed from the ground using a crane, etc. for a hand-stretching machine with a length of about 100 cm. Lifting and assembling the load on one side of the gate structure lifting machine on the pedestal, loading and installing the gate structure transport trolley and at least two PC girder delivery trolleys onto the hand rolling machine, and installing the already installed PC Preparation process for mounting and installing at least two PC girder transport carts equipped with self-propelled and winch equipment between the girders, (C) One PC! (d) The hand-stretching machine is sent to the next pedestal by the girder carrier and fixed to the pedestal; After passing through the existing gate structure lifting machine and transporting it to the next pedestal using a self-propelled gate structure transport trolley that runs on a hand-stretching machine, the gate structure lifting machine is installed on the pedestal. (e) The PC girder transport carts on the front and rear platforms transport the PC girders received at the supply yard to the front of the erection site. (g) Connect the winch wire of the waiting gate structure transportation vehicle to the PC girder and transport the gate structure. 5 steps of pulling out the 20 girders to the erection position by the winch of the truck or the cooperative action of the winch and the rear PC girder carrier; (!i) by the front and rear double gate structure lifting machines Lift up the υPC girder,
The gate structure lifting equipment has a 6-step mechanism for lowering the 20 girders to a predetermined position on one side and installing and fixing them between the front and rear pillars, and (A) above. Steps (e) to C) involve lowering the Pc 1 girder for each sibling to the predetermined position on the other side and installing and fixing it parallel to the existing 10 girders between the two pillars; A 20-digit installation method characterized by repeatedly performing the steps (c) to (h) above.