JP3342738B2 - How to build a retaining wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earth retaining wall for constructing an earth retaining wall by arranging vertically a plurality of formed plates of a predetermined size in a vertical direction in front of a cut of an earth layer or an embankment cut slope. Related to the construction method.

[0002]

2. Description of the Related Art According to Japanese Patent Publication No. Sho 63-20979, the present applicant arranges formed plates of a certain size vertically in multiple stages in front of a cutting slope and places backfill concrete to impregnate the soil. Proposed to build a wall. This is based on the concrete foundation built along the tip of the cut slope.
A jig of a certain shape is arranged, and a molded plate of a certain size in which hooks that are open vertically
An inner molded plate whose surface is in contact with the cutting slope, and an outer molded plate whose surface is the outer surface of the retaining wall, of which the hook below the outer molded plate stands upward in the jig, Fit it on the outside leg and stand on the foundation, hook on the molded plate below,
Among you plug the hook below the shaping plate above has <br/> the outer coupling portion at each end, and the inner length, Shimonouchi using equal coupling to the spacing of the outer molding plate, inner of the top on the outer molding plate, arranged upright outer molding plate, of the outer mold plates each arranged one stage or several stages stand,
The backfill concrete is cast between the outer forming plates.

[0003]

The above-mentioned inner forming plate whose surface comes into contact with the cut slope has the function of supporting the outer forming plate in a state of being arranged side by side through a connector, and the backfill concrete. However, when the backfill concrete hardens, the role of the backfill concrete ends, and it becomes unnecessary. That is, in the above-mentioned prior proposal, it is necessary to use a molded plate twice as large as the area of the outer surface of the retaining wall, and the construction cost increases accordingly.

[0004]

According to the present invention, the retaining wall is constructed using only the above-mentioned outer molded plate, and the upper and lower molded plates are arranged at predetermined positions on the back surface. A molded plate of a certain size, on which a coupling device to be connected is installed, is erected one step in front of the cutting slope, and the upper plate is attached to the coupling device attached to the coupling device on the lower molding plate. Attach the connecting tool below the forming plate, connect the upper forming plate to the lower forming plate, place the backfill concrete in the gap between the lower forming plate and the cutting slope, Before the hardening is completely cured, the other end of the coupling or the anchor having one end swingably attached to the back surface of the upper molding plate is placed in a backfill concrete casting layer, and the upper molding is performed. Back-filling coupon to be installed at the gap between the forming plate and the cutting surface to be further joined with a joining tool on the plate The lateral pressure of the cleats, characterized in that to construct earth retaining retaining wall and repeatedly be received by the anchor.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral P denotes a molded plate, and hooks 1 which are opened in a vertical direction project from a predetermined position on the back, up, down, left and right, by a predetermined amount. One molded plate P is made of concrete and has a thickness of about 3 cm, a lateral width of about 90 cm, and a vertical height of about 30 cm. The hooks 1 protrude from the left and right ends from the upper and lower sides closer to the inside by a length of about 1/4 of the horizontal width, and can be arranged vertically in a potato joint or in a tear joint. It is like that. 2
Molding upright pointing to the lower end portion to the hook 1 above the molded plate P of the lower (first stage), the upper in the lower part of the molding board P is fitted to the hook 1 under the upper molded plate P to the upper portion in coupling piece for coupling the plate P, coupling piece 2 illustrated it is molded by pressing a steel plate.

Reference numeral 11 denotes a foundation constructed along the tip of the cutting surface 10 having a flat upper surface, on which a lowermost forming plate P is provided with a gap in front of the cutting surface 10. And vertically arranged along the cutting slope 10 or adjacently at a predetermined elevation angle α. Since the formed plate P is not self-supporting, the supporting leg piece 3 of a push rod type is used. This support leg piece 3 is formed by the lowermost forming plate P
It stands upright on the hook 1 on the table, and is pivotally connected to the connecting piece 2 for connecting the second-stage forming plate P so that it can be raised and lowered. The lowermost formed plate P is set up at the elevation angle α. Pivotally mounted conducted bolt, a nut 4, which a coupling piece 2 and the support legs 3 Tighten, it is preferable to prevent the molded plate P falls down, the coupling piece 2 not tighten the support leg The friction of No. 3 may prevent the molded plate P from falling down.

[0007] In addition to the supporting leg 3 having one end pivotally connected to the connecting piece 2 , an auxiliary leg 5 is inserted into the hook 1 below the lowermost forming plate P and fixed thereto from above. One end of the piece 6 is pivotally attached so as to be able to undulate, and the other end of the support leg 3 is in contact with the upper surface of the foundation 11 to stand the lowermost molded plate P vertically or at a predetermined elevation angle α. A bolt and a nut 7 provided at the other end of the piece 6 are tightened, and the other end of the support leg 3 is fixed between the nut and the other end of the auxiliary leg 6 so that the support leg is fixed.
3, the auxiliary legs 6, keeping the triangle shaped plate P, may prevent the molding plate P from falling. When used with auxiliary leg 6, the support legs 3 volts, the nut 4 without, or may be pivoted in Pinjo <br/> in and.

[0008] The support leg 3 is pivotally attached to the two connecting pieces 2 to be inserted into the left and right hooks 1 on the lowermost forming plate P , both when used together with the auxiliary leg 6 and when not used together. Alternatively, it may be only pivotally connected to one of the connecting pieces 2 . In this way, the lowermost molded plate P is placed on the foundation 11 ,
It can be set vertically or at any elevation angle α .

[0009] Thus, the cutting slope 10 on the foundation 11
Once aligned vertically molded plate P of the bottom to the adjacent shape away from before, and Da設the backfill concrete about slump 8~10cm to the spacing of the molded plate P and SetsuSakari glue surface 10 of the bottom, the punch The other end sides of the support leg pieces 3 and the auxiliary leg pieces 6 are filled with the installation layer 8-I. Then arranged upright molding plate P in the second stage with a binding piece 2 on the bottom of the molded plate P, the casting layer 8-I is, when cured enough to prevent movement of the support legs 3 (in summer 3
In about 0 minutes to 1 hour, about 1 to 4 hours in winter), backfill concrete is cast again below the upper end of the second-stage formed plate P on the casting layer 8-I, and the second shot is performed. The layer is defined as 8-II. The other end of the anchor 9 having one end pivotally connected to the upper part of the back surface of the second-stage molded plate P or the coupling piece 2 that couples the second-stage and third-stage molded plates P 2-cast layer 8-II
And fix the second stage forming plate P
The lateral pressure of the backfill concrete of the casting layer 8-II is received. In this case, the lowermost molded plate P is the second casting layer 8-II.
Backfilling to prevent movement of the front at the lateral pressure of the concrete, the bottom end of the molded plate P and the mortar 12, it is preferably fixed on the foundation 11 in such concrete nails 13 struck the foundation 11. Further, a SetsuSakari slopes 10, upper surface 11 'of basic 11 between the molding plates P of the lowest stage and the inclined surface before the uplink as shown, the first shot設層without touching the molding plate P 8
It is preferable to cast -I and fill the support leg pieces 3 and the auxiliary leg pieces 6 with backfill concrete as much as possible. Thus, the upper before until the earth retaining retaining wall of the required height, with connecting piece 2 to the lower molding board P arranged upright upper molded plate P, hitting設層8 was Da設before is completely cured The backing concrete is cast lower than the upper end of the forming plate P , and then the other end of the connecting piece 2 or the other end of the anchor 9 having one end pivotally attached to the upper rear surface of the upper forming plate P Casting layer 8-II of 4 ...
I, 8-IV... Are repeatedly installed, and anchor 9
In building fixing of molded plate P, and earth retaining retaining wall while receiving lateral pressure of the backfill concrete is pouring.

In this manner, the support leg 3, the auxiliary leg 6 and the anchor 9 are buried in the hard cast-in layer 8 of the backfill concrete, and are arranged in a multi-stage form.
P is the support legs 3 and the auxiliary legs 6 buried in striking設層8 was cured, firmly fixed by the anchor 9, hitting設層8
It does not come off. Further, since the supporting leg pieces 3 and the anchors 9 are arranged across the joint portions 8 'of the upper and lower casting layers 8 of the backfill concrete, the upper and lower casting layers 8 are prevented from slipping at the joining portions 8'. has the effect of, the earth retaining retaining wall safety, reliability is ensured.

The anchor 9 can be a strip material such as a flat bar (FIGS. 9 and 10 ) or a bar material such as a reinforcing bar (FIGS. 11 and 12 ).
May be. It is more effective to bend the other end portion 9 'downward or sideways, or to attach a plate 9 "by welding or screws in the case of a rod material. In the case of a strip plate material, one end is bolted. In the case of a bar, one end may be bent at a right angle to pass through a hole such as the connecting piece 2 and, if necessary, further bent in a folded shape to prevent the bar from coming off. one end of the anchor 9 as the connection piece 2
The present invention is not limited to such a case that the bearing piece is protruded from the rear surface of the molded plate P, and may be pivotally attached to the bearing piece. The pivotal connection between the one end of the anchor 9 and the connecting piece 2 or the bearing piece may be swingable such as undulating and oscillating.

In this embodiment, the backfill concrete is cast every time the formed plate P is erected one by one. However, the backfill concrete is cast by placing the formed plate P in a plurality of steps of about two or three steps. You may go after arranging. When the support leg piece 3 and the connection piece 2 are pivotally connected to each other and the belt plate anchor is connected to the connection piece 2 and the bearing piece with bolts and nuts, the support leg piece 3 and the connection piece
2. It is preferable because it can be stored and transported without taking up space by separating the strip-plate anchors separately, and can be easily assembled at the construction site.

[0013]

As is clear from the above, according to the present invention, the retaining wall can be constructed by using only the previously proposed outer formed plate, that is, by using only half the number of formed plates. . Then, the anchor of the molded plate was fixed during backfilling concreting, and with receiving the lateral pressure of the backfill concrete being Da設, hitting cured across the droplet Chi joints of the upper and lower casting layer設層Since it is buried inside, the multi-stage formed plate is firmly fixed, and the upper and lower casting layers are prevented from slipping.
This makes it possible to easily construct a safety and reliable earth retaining wall.

[Brief description of the drawings]

FIG. 1 is a sectional view of a state in which a retaining wall is being constructed.

FIG. 2 is a side view of a state where a lowermost molded plate is erected on a foundation by supporting leg pieces.

FIG. 3 is a side view of a state in which a lowermost forming plate is erected on a foundation by a supporting leg and an auxiliary leg.

FIG. 4 is a plan view of FIG. 3;

FIG. 5 is an enlarged view of FIG. 3;

FIG. 6 is a sectional view taken along line AB in FIG. 5 ;

FIG. 7 is a perspective view of the back surface of the molded plate.

FIG. 8 is a perspective view of a coupling piece.

FIG. 9 is a perspective view of an example of an anchor made of a band plate material.

FIG. 10 is a perspective view of another example of an anchor made of a band plate material.

FIG. 11 is a perspective view of an example of a bar anchor.

FIG. 12 is a perspective view of another example of a rod-shaped anchor.

[Explanation of symbols]

P molded plate 1 hit設層9 anchor 10 SetsuSakari slopes 11 basis of the concrete of the hook 2 joining piece 3 supporting legs 5 insertion piece 6 auxiliary leg 8 back Me write Concrete

Claims (1)

(57) [Claims] 1. A fixed-sized formed plate on which a connecting tool for connecting upper and lower formed plates is connected at a predetermined position on a back surface is arranged in one step in front of a cutting slope, and a lower part is provided. Attach the connecting tool below the upper forming plate to the connecting tool attached to the connecting tool on the forming plate of the above, connect the upper forming plate to the lower forming plate, and connect the lower forming plate and the cutting glue Before the backfill concrete is completely hardened, the other end of the above-mentioned coupler or the anchor having one end swingably attached to the back of the upper molded plate before the backfill concrete is completely hardened. Is placed in the backing concrete casting layer, and the anchors receive the lateral pressure of the backing concrete to be poured into the gap between the forming plate and the cutting slope to be further bonded to the upper forming plate with a fastener. earth retaining retaining wall of the structure, characterized in that to build the earth retaining retaining wall repeatedly to that Construction method.