JPS605072Y2 - Sheet pile type wall structure - Google Patents

Description

[Detailed description of the invention] This invention relates to a sheet pile type wall structure such as a seawall, a quay, or a breakwater.

Conventionally, when constructing a double sheet pile wall structure for a seawall, quay, or breakwater, a water-side sheet pile wall and a pupil-side sheet pile wall are driven into the underwater ground, and then a medium-sized sheet pile is installed between these sheet pile walls. Filled with filling material.

However, in the case of the conventional double sheet pile type wall structure,
When external forces such as earth pressure, water pressure, seismic force, etc. are large, the width of the embankment body becomes large, which causes problems in that a large amount of filling earth and sand is required and large sheet piles are required.

Furthermore, if the water-blocking performance of a sheet pile type wall structure in a seawall or the like is low, it is necessary to considerably increase the width of the backfilling earth and sand layer filled on the back side.

Therefore, a large amount of earth and sand is required, the construction period is long, and when waste is dumped behind the backfill earth and sand layer, the amount of waste to be dumped becomes small.

The object of this invention is to provide a sheet pile type wall structure that can advantageously solve the above-mentioned problems.

Next, this invention will be explained in detail using illustrated examples.

FIG. 1 shows an embodiment of this invention, in which a water-side sheet pile wall 1, a pupil-side sheet pile wall 2, and an intermediate reinforcing and water-blocking sheet pile wall 4 located between them are placed on the water bottom ground 5. and is set up,
The penetration depth of the sheet pile wall 4 is deeper than the penetration depth of the water side sheet pile wall 1 and the pupil side sheet pile wall 2. Side pile wall 2
Filling earth and sand 3 is filled between each sheet pile wall 1°2
．． A concrete coping 6 is provided over the 4 and the top of the filling earth and sand 3.

In the case of a seawall, etc., the back side of the sheet pile wall 2 on the pupil side is filled with backfill earth and sand 7.

When implementing this idea, for example, steel sheet piles or steel pipe sheet piles are used as the sheet piles constituting the water-side sheet pile wall 1 and the pupil-side sheet pile wall 2, and the sheet piles constituting the intermediate reinforcing and water-blocking sheet pile wall 4 are used. For example, steel sheet piles are used.

Further, the intermediate reinforcing and water-blocking sheet pile wall 4 may be cast before filling with the filling earth and sand 3, or after filling with the filling earth and sand 3.

The penetration depth of the intermediate reinforcing and water-shielding sheet pile wall 4 may be approximately the same as the penetration depth of the water side sheet pile wall 1 and the pupil side sheet pile wall 2, but the penetration depth of the said sheet pile wall 4 may be If the penetration depth is greater than the penetration depth of the side sheet pile wall 1 and the pupil side sheet pile wall 2, it is effective to prevent seepage water when there is permeation water passing under the water side sheet pile wall 1 and the pupil side sheet pile wall 2.

According to this invention, in the sheet pile type wall structure in which the filling soil 3 is filled between the water side sheet pile wall 1 and the pupil side sheet pile wall 2, the water side sheet pile wall 1 and the pupil side sheet pile wall 2 Since a sheet pile wall 4 for intermediate reinforcing and water shielding is installed in the middle between the two walls, the sheet pile wall 4 improves the strength of the sheet pile type wall structure against external forces such as earth pressure, water pressure, and seismic force. In addition, it contributes to the reduction of the inside of the embankment, and in particular improves water-blocking properties, so in the case of bank protection etc., it is possible to reduce the width of the backfilling soil layer 7 filled on the back side of the sheet pile type wall structure. Therefore, the amount of earth and sand used in the embankment and backfilling can be reduced and the construction period can be shortened, and when waste is dumped behind the backfilling earth and sand layer 7, the amount of waste can be increased. The effect of this can be obtained.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional side view showing a sheet pile type wall structure according to an embodiment of this invention. In the figure, 1 indicates the water-side sheet pile wall, 2 indicates the pupil-side sheet pile wall, 3 indicates the filling soil, 4 indicates the intermediate reinforcing/water-blocking sheet pile wall, and 7 indicates the backfilling soil.

Claims (1)

[Scope of utility model registration request] In a sheet pile type wall structure in which filling earth and sand 3 is filled between the water side sheet pile wall 1 and the pupil side sheet pile wall 2, intermediate reinforcement is provided between the water side sheet pile wall 1 and the pupil side sheet pile wall 2. A sheet pile type wall structure characterized in that a sheet pile wall 4 for doubling as water shielding is installed.