JPS5847097Y2 - Kaisho Department Tsuchidome Box - Google Patents

Description

[Detailed description of the invention] This invention relates to a retaining box for a meeting place section used for administrative construction work.

In controlled construction work using the open construction method, steel sheet piles are driven to retain earth at the meeting place for pipe joints.
In addition, earth retention boxes are installed during construction, but the steel sheet pile driving method is considered inefficient due to the large amount of sheet piles being driven, so the earth retention box installation method is used.

However, since the shape of this method is fixed, it is inconvenient that if an obstacle appears in the hall, it may not be possible to install it.

Now, to explain the state in which a conventional retaining box is installed in a meeting place with reference to FIG. 1, the front panel 1 and the rear panel 1' have a predetermined width and height, and a cutout of a predetermined shape in the center of the lower part. A panel with a cutout is installed across the pipe P.

A pair of side panels 3 are panels having a predetermined width and height, and both ends thereof are joined to the ends of the panels between the front and rear panels, and both the panels are supported by jacks 4 and 5, and the above-mentioned panel is placed in the center of the panels. Make sure that the joint part A of the buried pipe P comes
In this way, the dome box of the meeting place section is constructed.

However, if an underground obstacle S appears in the above-mentioned section, since the front and rear and side panels each have a fixed shape, the shape of the retaining box will also be fixed, and therefore, it will not be possible to place concrete in the area of the obstacle. .

Since this obstruction is particularly noticeable in urban areas where there are many existing buried pipes, some kind of countermeasure has been desired.

The object of this invention is to provide a retaining box in a meeting place which eliminates the drawbacks of the prior art by making the width of the front and rear panels of the retaining box adjustable.

Next, an example of this invention will be explained using drawings.
In Figures 2.3.4 and 5, joint part A of buried pipe P
The pair of panels to be installed at the front and rear of the vehicle have the same shape, and consist of a pair of center panels 10 and a pair of adjustment panels 20 extending on both sides of the center panel. The adjustment panel has a rectangular flat plate shape with a notch 11 that can be straddled, and the adjustment panel has a rectangular flat plate shape that is the same height as the center panel. Two long holes 23 are bored for use.

The plate surfaces of the adjustment panel are brought into contact with both side plate surfaces of the central panel, one end of the two-stage gap adjustment fitting 21 is brought into contact with the outer plate surface of the center panel, and the other end is brought into contact with the outer plate surface of the adjustment panel. Then, the other end and the elongated hole of the adjustment panel are fastened with the adjustment bolt nut 22. In this case, since the fastening can be done at any position along the elongated hole, the width of the panel can be adjusted.

In addition, both adjustment panels 2 installed on both sides of the center panel 10
A side panel fastening fitting 24 having a box-shaped cross section and having an opening passing through the upper and lower sides is fixed to the outer end of the inner plate surface of the 0.

Next, the side panel 30 has a flat plate shape with claw fasteners 31 protruding from both end faces thereof, which can be freely fitted into and detached from the side panel fastening metal fittings, and the claw fasteners are used to fasten the side panel. Pouring is performed while fitting into the metal fittings.

Further, each panel can be supported by providing a support jack 40 between the front and rear panels and another support jack 50 between the panels on both sides.

Note that it is convenient for pouring if the lower ends of the center panel 10, adjustment panel 20, two-stage gap adjustment fitting 21, and side panels 30 are each formed into a tapered shape.

Therefore, according to this invention, when an obstacle appears in the hall, one or both sides of the front and rear panels are moved inward or outward to adjust the panel width appropriately, and then Panels can be placed and obstacles can be avoided.

Next, the installation of the earth retaining box according to this invention will be described below with reference to FIG.

Furthermore, in the same figure, 60 indicates the cloth hole section, and 70 indicates the meeting place section, and the piping work progresses from left to right in the drawing, and welding of the piping and joints adjacent to the left of the meeting place section 70 has been completed. Assume that you have not done so.

First, in ■, the adjustment panel 20 on the rear panel
At the planned location, excavate the meeting place part 70, and at (2) excavate and attach the adjustment panel side panel attachment fittings 24.
While inserting the attachment fittings 31 of the side panel 30, the side panel is placed perpendicularly to the adjustment panel and placed forward, and the excavation is further advanced, and the adjustment panel and side panel are placed to the planned depth in step (3). After that, the support jack 50 is brought into contact with the support jack 50 to perform the extension operation, thereby preventing the side panel from falling due to the bending.

Depending on the situation, support jacks may be used while pouring the side panel, and if the side wall is large, support jacks may be used in multiple stages, and then excavation is continued as shown in ■, and at the appropriate time, the front end of the side panel 30 is placed inside. Insert and cast the adjustment panel 20 perpendicularly to the panel 20 in the same manner as in the above-mentioned (■). Next, as in (■), the support jacks 40 are brought into contact with the front and rear adjustment panels 20 to cause them to extend, thereby increasing the upper pressure. This prevents falls due to
Depending on the situation, the above-mentioned support jacks may also be used during the installation of the adjustment panel, and as shown in ■, since the excavation and removal of soil in the remaining areas is almost completed, the buried pipe P1 is laid, and the rear adjustment panel 20 is closed. A two-stage gap adjustment fitting 21 is attached to the center panel 10 with an adjustment bolt nut 22, and a center panel 10 is attached between the two adjustment fittings.
is inserted and cast to a predetermined depth, and then the joint work for the buried pipe P□ is completed.

In step 2, construct the cloth digging in front of the meeting place, arrange the buried pipes P2 in the predetermined positions in step 3, and finally in step 2, install the central panel 1 between both adjustment fittings 21 of the front adjustment panel 20.
Insert and drive to the specified depth.

The construction is carried out by repeating the above-mentioned construction method, but if the side panel 30 cannot be cast due to the obstacle S during the construction described in (1) above, the adjustment panel 20 can be moved by slowly tightening the adjustment pole I/nut 22. After avoiding the obstacle by moving the required length along the width adjustment elongated hole 23, tighten the bolts and nuts again, and then attach the side panel 30 to the side panel fastening fitting 24 of the adjusted panel 20 that has been moved. This means that the concrete is engaged with the concrete.

As mentioned above, this invention has great industrial utility because it is possible to construct a retaining box that avoids obstacles by moving the adjustment panels disposed on both sides of the central panel and adjusting the panel width.

[Brief explanation of drawings]

Figure 1 is a plan view of the conventional earth retaining box in the meeting place;
Figures 3 and 4 are plan, front, and side views showing an embodiment of this invention, respectively, and Figure 5 is a partially enlarged view showing the engagement relationship of the center panel, adjustment panel, and two-stage gap adjustment fitting according to this invention. The cross-sectional plan view, FIG. 6, is an explanatory plan view showing the order of placing the earth retaining boxes in the meeting place. 10...Central panel, 20...Adjustment panel, 21...Double gap adjustment fitting, 22...
...Adjustment bolt nut, 23...Elongated hole for width adjustment, 24...Side panel attachment fitting, 30.
...Side panel, 31...Claw attachment,
40゜50...Support jack, 70...r
・Kaisho Department.

Claims (1)

[Scope of utility model registration request] A dome box for a meeting place section, characterized in that a pair of center panels are removably installed at the front and rear, adjustment panels are extended on both sides of each, and side panels are arranged at the outer ends of the adjustment panels.