JPH0665919A - Water jet device for joint steel plate cleaning device for underground continuous wall joint - Google Patents

Abstract

PURPOSE:To clean cornered parts of a member by installing wheel device and a plurality of nozzles and a scraper and an excavation device to a frame which may rise and fall freely. CONSTITUTION:Jet water is ejected from first, second, third and fourth nozzles installed to a pipeline 12 when a high pressure water pump is driven. The jet water ejected from the nozzle 13 cleans the cornered parts of a square pipe 23 and a grout pipe 24 and welded steel plate 20. The jet water from the nozzle 16 cleans the guide H steel 21 from a middle point of its central part 21a to the bottom. The jet water from the inner side of the nozzle 18 cleans the inner surface of a cover 26 and the corners. The jet water from the outside nozzle 28 cleans the outside surface of the cover 26 and the inside surface of a protection angle 22. The jet water from the nozzle 19 cleans the inner surface of the pipe 25 by way of an opening 25a of a joint pipe 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water jet device for cleaning a bonded steel plate of an underground continuous wall joint.

[0002]

2. Description of the Related Art First, a construction mode of a continuous underground wall will be described.

First, a guide wall W is installed to rule the excavation position (FIG. 4).

Then, in order to build the preceding element E1, a base machine (crawler crane C in the illustrated example) is constructed.
The excavator DM is hung at C) and the excavation groove D1 is dug down (FIG. 5).

Therefore, after excavating to a predetermined depth, the slime in the excavation groove D1 is sucked up and the excavation circulating mud used for the excavation is replaced with the good liquid GL (FIG. 6).

Then, the hoisting tool H with the crawler crane CC.
The leading rebar cage B1 is hung in the excavation groove D via the (Fig. 7).

Then, the tremie pipe T is hung by the crawler crane CC (FIG. 8).

Next, a belt conveyor C is connected to the crushing stone hopper SH, and in order to prevent deformation and movement of the preceding rebar cage B1 due to concrete lateral pressure, the concrete pump P is loaded while the crushed stone S is packed in the joint portion of the preceding rebar cage B1. It is connected to the tremie pipe T via the flexible porcelain F, and concrete is poured to construct the preceding element E1 (Fig. 12) (Fig. 9).

The construction of the trailing element E2 (FIG. 17) is
First, similarly to FIG. 11, the excavation groove D2 is excavated in the portion between the preceding elements E1 and E1 (FIG. 10).

Next, the joint protection plates DP provided on both sides of the preceding element E1 are pulled out by the crawler crane CC (FIG. 11). The joint protection plate DP prevents the excavator from entering the joint portion of the preceding element and preventing the joint portion of the following element from entering.

Therefore, the winch WM moves the cleaner CM up and down along the end face of the joining steel plate JP of the preceding element E1 to clean the end face (FIG. 12).

Next, the slime in the excavation groove D2 is treated to replace the excavation circulation mud with the good liquid GL (FIG. 13).

Then, the crawler crane CC is used to rebar cage B
Build 2 (Fig. 14).

Then, as in the case of FIG. 9, the tremie tube T is installed (FIG. 15).

Therefore, concrete is poured (see FIG. 1).
6).

Finally, cement milk is injected into the joint portion (pipe joint) by the grout pump G (see FIG. 1).
7).

In the above embodiment, the preceding element E1
After the rebar cage B1 is built, it is left to stand for a long time until the concrete is placed in the trailing element E2, and when excavating the excavation groove D2 of the trailing element E2, slime adheres to the joining steel plate JP due to the circulating mud. To do. In addition, the crushed stone S for stabilizing the reinforcing bar basket B1 at the time of placing concrete of the preceding element E1 may also be attached. Therefore, before the concrete is cast into the trailing element E2, the joining steel plate JP
Since it is necessary to carefully clean the surface of, the cleaning as shown in FIG. 12 is necessary.

Therefore, the applicant of the present invention filed in FIG.
As shown in FIG. 1, a guide wheel device 2 and 2 is provided which is provided with a frame 1 which is moved up and down by a base machine, and in which the frame 1 is provided with wheels with lock accident elimination means for guiding the frame 1 to the guide H steel 21 of the joining steel plate 20. Cleaning brush devices 3, 3 and 4 biased by elastic means for cleaning the installed steel plate 20, a water jet 5 for jetting jet water to the bonded steel plate 20, and a scraper for scraping the bonded steel plate 20. 6 and an excavation device 7 for excavating the lower part of the frame were proposed.

In the above apparatus, the water jet 5 cleans the deposits on the jointed steel plate 20 and moistens the deposits that cannot be removed so that they can be easily cleaned by the brush devices 3 and 4 and the scraper 6.

[0020]

By the way, as shown in FIG. 19, the joint steel plate 20 of the rebar cage B1 of the leading element E1 is joined to the joint arm 29 of the rebar cage B2 of the trailing element E2. 25 is provided, and as shown in FIG. 1 showing the embodiment of the present application, a joint pipe cover 26, an inclinometer square pipe 23, and a ground pipe 24 are provided in a protruding manner. Therefore, there is a problem that jet water does not reach the deposits at the corners and corners of these members, so that they cannot be sufficiently washed.

It is an object of the present invention to provide a water jet device for a jointed steel plate cleaning device for a continuous underground wall joint, which allows jet water to reach the corners of members protruding from the jointed steel plates.

[0022]

According to the present invention, there is provided a frame which is lifted and lowered by a base machine, and a guide wheel device for guiding the frame to the guide H steel of the joining steel plate and the joining steel plate are cleaned. A cleaning brush device, and a water jet device for injecting jet water onto the bonded steel plate,
In a joint steel plate cleaning device for an underground continuous wall joint provided with a scraper for scraping the joint steel plate and an excavating device for excavating the lower part of the frame, the water jet device is provided with an opening of a joint pipe of the joint steel plate and a guide H. A water jet device for a bonded steel plate cleaning device of an underground continuous wall joint is provided, which is provided with a plurality of nozzles for injecting jet water into a corner portion such as steel, a protective angle, and a corner portion such as a square pipe.

[0023]

In the water jet device for the joining steel plate cleaning device of the underground continuous wall joint configured as described above, the jet water jetted from the nozzle is used for the opening of the joint pipe,
The corners of the guide H steel and the like, the protective channel, and the corner pipes are preferably reached. Therefore, the deposits are washed and easily cleaned by the brush device and the scraper.

[0024]

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

In FIGS. 1 to 3, a pair of guide H steels 21 distributed from the central portion are provided on the joining steel plate 20 of the reinforcing bar basket B1 of the preceding element E1 (FIG. 12), and protective angles 22 are provided at both ends. Are projected, and an inclinometer square pipe 23 and a grout pipe 24 are projected in the central portion. In addition, the protective angle 22 of the bonded steel plate 20
The joint pipes 25 are integrally formed in the vicinity of, and the joint pipes 25 are covered with a joint pipe cover 26. In the figure, reference numeral 27 is a reinforcing angle and 28 is a connecting rod.

On the other hand, a water supply pipe 10 connected to a high-pressure water pump (not shown) is provided on the back surface of the frame 1A of the cleaning device, and the water supply pipe 10 is horizontally provided on the front surface of the frame 1A by a high-pressure hose 11. Connected to the pipe 12.

The pipe 12 is fixed to brackets 8, 9 and 9 which are erected at the center and both sides of the front surface of the frame 1A, and the pipe 12 has a U-shape for escaping the guide H steel 21. The portion 12a is formed.

A first nozzle 13 for ejecting jet water is directly attached to the center of the pipe 12 in the middle of the square pipe 23 and the grout pipe 24. Further, a second nozzle 16 for injecting jet water is provided at the curved portions on both sides of the U-shaped portion 12a through the short pipe 14 and the socket 15 to the corner portions of the central portion 21a and the bottom portion 21b of the guide H steel 21. Has been. The joint pipe cover 26 is provided with a third nozzle 18 for injecting jet water to the corner of the cover 26 via the short pipe 14a and the elbow 17, and further toward the opening 25a of the joint pipe 25. And a fourth nozzle 19 is provided.

Next, the operation will be described.

When the high-pressure water pump is operated during excavation,
The high pressure water is supplied to the first, second, third and fourth nozzles 13, 1
Jet water is jetted from each of 6, 18, and 19. The jet water from the first nozzle 13 suitably cleans the corners of the square pipe 23 and the grout pipe 24 and the bonded steel plate 20. Further, the jet water from the second nozzle 16 flows from the middle of the central portion 21 a of the guide H steel 21 to the bottom portion 2 a.
Wash 1 appropriately. Further, the jet water from the third nozzle 18 on the inner side suitably cleans the inner surface and the corner of the cover 26. Further, the jet water from the outer third nozzle 18 preferably cleans the outer surface of the cover 26 and the inner surface of the protective angle 22. Then, the jet water from the fourth nozzle 19 suitably cleans the inner surface of the pipe 25 through the opening 25 a of the joint pipe 25.

[0031]

EFFECTS OF THE INVENTION Since the present invention is constructed as described above, it is possible to make jet water reach the corners of the members projecting from the joined steel plates and wash them properly.

[Brief description of drawings]

FIG. 1 is a top view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a sectional view taken along the line BB of FIG.

FIG. 4 is a guide wall installation process diagram for explaining a construction mode of a continuous underground wall.

FIG. 5 is an excavation process diagram of a preceding element.

FIG. 6 is a process drawing of slime treatment and non-defective liquid replacement.

FIG. 7 is a process diagram of building a reinforcing bar.

FIG. 8 is a process drawing for building a tremie pipe.

FIG. 9 is a process drawing of crushing stones and placing concrete.

FIG. 10 is an excavation process diagram of a trailing element.

FIG. 11 is a drawing of the joint protective plate drawing process.

FIG. 12 is a joint part cleaning process.

FIG. 13 is a process drawing of slime treatment and good liquid replacement.

FIG. 14 is a reinforcing bar building process diagram.

FIG. 15 is a process drawing of building a tremie pipe.

FIG. 16 is a concrete pouring process diagram.

FIG. 17 is a process diagram of a grout injection process.

FIG. 18 is a side view showing a cleaning device according to a prior application of the present applicant.

FIG. 19 is a top view illustrating a joint mode of a reinforcing bar basket.

[Explanation of symbols]

 B1, B2 Reinforcing cage C Belt conveyor CC Crawler crane CM Cleaning machine D1, D2 Excavation groove DM Excavator DP Joint protection plate E1 Leading element E2 Trailing element F Flexible hose G Glaude pump GL Good liquid H Lifting device JP Joint steel plate P Concrete Pump R Uncut area S Crushed stone SH Crushed stone hopper T Tremy tube W Guide wall WH Winch 1 Frame 2 Guide wheel device 3,4 Cleaning brush device 5 Water jet 6 Scraper 7 Excavator 8, 9 Bracket 10 Water pipe 11 High pressure hose 12 Piping 12a U-shaped part 13 1st nozzle 14, 14a Short pipe 15 Socket 16 2nd nozzle 17 Elbow 18 3rd nozzle 19 4th nozzle 20 Joining steel plate 21 Guide H steel 22 Protective angle 23 Inclinometer square pipe 24 Groudpa Flop 25 joint pipe 25a opening 26 joint pipe cover 27 reinforcing angle 28 connecting rod 29 joint arm

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Terumichi Hata 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. Kashima Construction Co., Ltd. Technical Research Center

Claims (1)

[Claims] 1. A guide wheel device for guiding a frame to a guide H steel of a joining steel plate, a cleaning brush device for cleaning the joining steel plate, and a joining steel plate provided with a frame which is elevated and lowered by a base machine. A water jet device for injecting jet water, a scraper for scraping the joining steel plate, and a joining steel plate cleaning device for an underground continuous wall joint provided with an excavating device for excavating the lower part of the frame, in the water jet device, the joining Joint steel plate for underground continuous wall joint, characterized in that a plurality of nozzles for jetting jet water are provided at the opening of the joint pipe of the steel plate, the corner of the guide H steel and the like, the corner of the protection angle and the square pipe and the like. Water jet device for cleaning equipment.