JP2007297778A - Concrete mattress - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a concrete mattress excellent in the effect of the prevention of the outflow of back filling soil caused by an ocean wave, easily installable, having no possibility that its entire part is collapsed by its partial damage, and excellent in stability. <P>SOLUTION: In this concrete mattress, panels adjacent to one another are so connected to one another as to be bent in a flat surface shape through a hinge formed at the side of the concrete panel. For example, engagement recesses are formed at both end surfaces of a fitting recess formed at the side of the concrete panel. A fitting projecting part inserted into the fitting recess is formed on the other panel side joined to the panel. An engagement projecting part fitted to the engagement recess is formed on the end surface of the fitting projecting part. The hinge of each panel is formed of the engagement recess of the fitting recess and the engagement projecting part of the fitting projecting part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a concrete mattress formed by joining a plurality of concrete panels in a planar shape.

  In the revetment or quay facing the ocean, it is common to construct a backstone behind the structure to reduce earth pressure, and to lay a sand-proof sheet on the surface to prevent sucking out buried soil. As an example, in a sandproof sheet for landfill made of synthetic resin fiber woven fabric that is laid on the slope of a backfill work on a landfill revetment and prevents leakage of landfill earth and sand, above the surface of the synthetic resin fiber woven fabric above the seawater immersion site A sand-proof sheet is known that prevents deterioration of the sand-proof sheet woven fabric due to exposure to ultraviolet rays and improves the weather resistance of the sand-proof sheet by forming a vinyl chloride resin film mixed with water-permeable carbon black on the land part of (Patent Document 1).

  In recent years, there have been cases where sand-proof sheets are damaged, and the reasons for this are (i) impacts of soil blocks during construction of buried soil and (b) water pressure due to waves passing through abandoned stone mounds. Although the sandproof sheet currently used has a high tensile strength but a low shear strength, the sandproof sheet is likely to be damaged when the impact is repeated due to the impact of a clot or wave. Moreover, since the laying position of the sand proof sheet is the surface of the back lining stone, if the sand proof sheet is weak, the entire surface of the back lining part becomes a material weak point, which may lead to a weak point of the revetment and quay structure.

On the other hand, a revetment method using a concrete block is known. For example, as an Okazaki-type revetment method, a concrete single-floor block is used, two holes are made in this block, and the holes of the blocks that touch the top and bottom are shifted from each other, and a number of blocks are connected in sheet form through iron wires. There are known methods of laying on the bank of the revetment and the surface of the riverbank. According to this construction method, an integral mattress extending over several hundred meters can be formed and laid, and there is an advantage that it can be easily applied according to the shape of the revetment. However, in this construction method, the work of passing iron wires through the holes of many blocks is complicated, and many blocks are connected by one or several iron wires. There is a problem that the blocks are disconnected and the entire concrete mattress collapses.
JP 091655731

  The present invention solves the above-mentioned problems found in the sand proof sheet and the concrete block laying method in the conventional revetment method, and is excellent in the effect of preventing the outflow of backfill soil due to waves and is easy to construct. And since each connection is independent, there is no possibility that the whole will collapse by partial breakage, and a concrete mattress excellent in stability is provided.

  According to the present invention, (1) a concrete panel is used, and a plurality of adjacent panels are connected to each other so as to be bent into a flat shape by a hinge provided on the side of the panel. The concrete mattress which solved the above-mentioned subject by technical composition to do is provided.

  In the present invention, in addition to the configuration of (1) above, (2) engagement recesses are formed on both end surfaces of the fitting recesses provided on the side of the concrete panel, A fitting convex portion that is inserted into the fitting concave portion is formed on the panel side portion, and an engaging convex portion that fits into the engaging concave portion is formed on an end surface of the fitting convex portion. A concrete mattress in which a hinge portion of each panel is formed by the engagement recess of the fitting recess and the engagement projection of the fitting projection is included.

  In the present invention, in addition to the configuration of (2) above, in the hinge portion of the panel, an engagement convex portion is formed in the fitting concave portion instead of the engaging concave portion of the fitting concave portion. Instead of the engaging convex portion, an engaging concave portion is formed in the fitting convex portion, and the hinge portion is formed by the engaging convex portion of the fitting concave portion and the engaging concave portion of the fitting convex portion. Includes concrete mattress.

  In addition to the configuration of (2) or (3), the present invention includes (4) outer panels A and B having fitting recesses on one side of the panel, and inner panels C having fitting recesses on both sides of the panel. , Side end panels D and E having a shape obtained by dividing the inner panel C in the axial direction are used, and an engagement recess is formed on the end surface of the fitting recess of the outer panel A. On the other hand, an engaging convex portion is formed on the end surface of the fitting concave portion of the outer panel B, and an engaging convex portion is formed on both end surfaces of the fitting concave portion on the panel A side of the inner panel C. Engaging recesses are formed on both end surfaces of the fitting recess on the panel B side of C, and the side end panels D and E are formed with engaging recesses and engaging projections on both end surfaces of the fitting projections, respectively. The side end panel D and the side end panel E are symmetrical to each other, and the panel adjacent to the engagement recess of each panel is engaged. It includes a concrete mattress in which each panel is connected in a flat shape so that it can be bent by fitting convex portions.

  In the present invention, in addition to the configuration of (4), (5) the front half of the inner panel C and the rear half of the other inner panel C in series with the inner panel C are integrated in the fitting recess of the outer panel A. The outer panel A and the inner panel C are connected by a hinge portion by fitting the engaging projections of the panels C into the engaging recesses of the outer panel A, and the inner panel C is fitted. The front half of the outer panel B and the rear half of the other outer panel B in series with the outer panel B are integrally fitted in the recess, and the engaging protrusion of each panel B becomes the engaging recess of the inner panel C. By fitting, the inner panel C and the outer panel B are connected by a hinge portion, and each panel includes a concrete mattress that is connected in a flat shape so as to be foldable.

  In the present invention, in addition to the above (5), (6) the fitting recesses and the fitting projections of the adjacent inner panels C are fitted to each other to connect the plurality of rows of inner panels C, and the outer sides are connected to both sides thereof. It includes a concrete mattress to which panel A and outer panel B are connected.

  In addition to any of the above (1) to (6), the present invention includes (7) a concrete mattress provided with holes penetrating the front and back surfaces of each concrete panel.

The concrete mattress of the present invention uses a concrete panel and is formed by connecting a plurality of adjacent concrete panels to each other in a planar manner by hinges provided on the side of the panel. Has an effect.
(A) Since it is formed by a concrete panel, it is much more durable than a synthetic resin sheet and is stable because it is heavy.
(B) It can be bent according to the shape of the rubble mound to be laid or the surface of the ground, and can be constructed stably even on rough surfaces and deformed surfaces.
(C) Since the panels are connected to each other by a hinge portion formed on the side of the concrete panel without using iron wires, the connecting portion is strong and rich in durability.
(D) Since the shape of the panel constituting the mattress is simple and the connecting method is simple, the manufacturing and laying construction is easy, and the construction cost is low.
(E) High stability against wave and flow forces.
(F) Stability is good even when constructed on steep slopes.
(G) By increasing the panel weight, it can also be used as a rooting work.
(H) As a land facility, it can be applied to simple pavements such as interlocking.

  Hereinafter, the concrete mattress of the present invention will be specifically described with reference to the embodiments shown in the drawings. The illustrated concrete mattress is an example of the present invention, FIG. 1 is a plan view thereof, FIG. 2 is a development view before connection of the concrete panels used in the concrete mattress shown in FIG. 1, and FIG. 3 is a plan view of each panel. . In the present invention, with respect to the axial direction of the hinge portion formed on the side portion of the panel, the surface facing this is called the end surface, and the surface along this axial direction is called the side surface. Further, for each panel, the upper side in the figure is referred to as a front half, and the lower side is referred to as a rear half.

  The illustrated concrete mattress is formed of concrete panels A, B, C, and D, and a plurality of adjacent panels A, B, C, and D are folded into a flat shape by hinge portions provided on the side portions of the panels. It is formed to be connected to each other so that it can be bent. Specifically, engaging recesses are formed on both end faces of the fitting recess provided on the side panel made of concrete, and the other panel side part joined to the panel is inserted into the fitting recess. A fitting convex portion is formed on the end surface of the fitting convex portion, and the engaging convex portion and the fitting convex portion of the fitting concave portion are formed. The hinge part of each panel is formed by the engaging convex part of the part. A concrete mattress is formed by connecting a plurality of concrete panels in a planar shape by the hinge portion.

The hinge part of each panel is formed with an engaging convex part in the fitting concave part instead of the engaging concave part of the fitting concave part. The embodiment includes an aspect in which an engagement recess is formed in the protrusion, and the hinge is formed by the engagement protrusion of the engagement recess and the engagement recess of the engagement protrusion.

  The illustrated outer panel A has a fitting recess 10 formed on one side surface thereof, and engagement recesses 11, 11 are formed on the end surface of the fitting recess 10. Further, by providing this fitting recess 10, one side of the front half of the panel and the rear half of the panel have a shape protruding sideways, and this part is fitted to the adjacent inner panel C or side end panels D and E. The protrusions 12 and 12 are formed.

  Similarly, the outer panel B has a fitting concave portion 20 formed on one side surface thereof, and engagement convex portions 21 are formed on the end surface of the fitting concave portion 20. Further, by providing this fitting recess 20, one side of the front half of the panel and the rear half of the panel have a shape protruding sideways, and this part is fitted to the adjacent inner panel C or side end panels D and E. The convex portions 22 and 22 are formed.

  An inner panel C is provided between the outer panel A and the outer panel B. The inner panel C has fitting recesses 30 formed on both sides of the panel. Engaging convex portions 31 and 31 are formed on both end surfaces of the fitting concave portion 30 on the panel A side, and the engaging concave portion 32 is formed on both end surfaces of the fitting concave portion 30 on the panel B side. , 32 are formed. Further, by providing the fitting recess 30, both sides of the front half of the panel and the rear half of the panel are projected sideways, and this part is fitted to the adjacent outer panel A, B or other inner panel C. It becomes the joint convex part 33,33.

  A side end panel D is provided at the front end of the illustrated concrete mattress. The side end panel D has a shape obtained by dividing the inner panel C into two parts with respect to the axial direction, and the rear half of the side end panel D forms fitting projections 40 projecting on both sides. An engagement concave portion 41 is formed on the end surface on the panel A side facing the outside of the fitting convex portion 40, and an engagement convex portion 42 is formed on the end surface on the panel B side.

  Similarly, a side end panel E is provided at the rear end of the concrete mattress. The side end panel E has a shape obtained by dividing the inner panel C into two in the axial direction, and the front half of the side end panel E forms fitting protrusions 50 projecting on both sides. An engagement concave portion 51 is formed on the end surface on the panel A side facing the outside of the fitting convex portion 50, and an engagement convex portion 52 is formed on the end surface on the panel B side. The side end panel D and the side end panel E have symmetrical shapes.

  The fitting concave portions 10, 20, 30 and the fitting convex portions 12, 22, 33, 40, 50 of each panel are formed so as to be fitted with a foldable gap between them, and the engaging convex portions 21, 31, 41, 51 are formed so as to be fitted with a bendable gap. As an example, as shown in FIG. 4, the engaging convex portion T is formed in a rectangular cross section along the panel, while the engaging concave portion S is formed by connecting the vertical insertion groove S <b> 1 and the lateral engaging groove S <b> 2. After the engagement convex portion T is vertically inserted into the insertion groove S1, the panel is rotated 90 degrees so that the engagement convex portion T faces sideways and is fitted in the engagement groove S2. . According to this engagement structure, the engagement convex portion T is difficult to be removed from the engagement groove S2, and the panel is freely rotatable (foldable) by forming the engagement groove S2 larger than the engagement convex portion T. Can be linked to.

  As shown in FIG. 1, a plurality (three in the figure) of an outer panel A and an outer panel B are arranged side by side in parallel with each other, and the rows of the outer panel A and the outer panel B are arranged in parallel. In the meantime, two inner panels C in the figure and three inner panels C in the figure are alternately arranged in parallel. In the row of two inner panels C in the figure, a side end panel D is provided at the front end, and a side end panel E is provided at the rear end.

  As shown in FIGS. 1 and 2, the front half of the inner panel C and the rear half of the other inner panel C in series with the inner panel C are integrated with the fitting recess 10 of the outer panel A. The fitting convex part 33 formed in combination is fitted, and the engaging convex part 31 of the inner panel C is fitted into the engaging concave part 11 of the outer panel A, whereby the outer panel A and the inner panel C are hinged. It is connected so that it can be bent at the part.

  Similarly, the front half of the inner panel C and the rear half of the other inner panel C adjacent to the inner panel C are integrally combined with the fitting recess 20 of the outer panel B. The fitting projection 33 is fitted, and the engagement recess 32 of the inner panel C is fitted to the engagement projection 21 of the outer panel B, so that the outer panel B and the inner panel C can be bent at the hinge portion. It is connected.

  The plurality of rows of the inner panel C are arranged in two axially facing lengths and are alternately shifted in the front-rear direction. A fitting convex portion 33 formed by integrally combining the front half portion and the rear half portion of the other inner panel C in series with the inner panel C is fitted, and is adjacent to the engaging concave portion 32 of the inner panel C. By fitting the engaging projections 31 of the other inner panels C, the inner panels C are connected to each other so as to be foldable.

  The side panels D and E are connected to the outer panels A and B and the inner panel C in the same manner as the connection structure of each panel.

  As described above, in the concrete mattress of the present invention, the panels are connected to each other by the hinge portion for each panel and are not connected by the reinforcing bars. Therefore, there is no defect such as the entire mattress being broken by cutting off some of the reinforcing bars, and the stability is high. Further, the panel may be connected by forming a hinge portion, and there is no structural restriction, so that an arbitrary number of panels can be connected. Furthermore, since each panel is connected so as to be foldable in a direction opposite to the axial direction, the panel can be stably installed on an uneven slope as shown in FIG.

  The concrete mattress of the present invention includes a concrete mattress in which holes (not shown) penetrating the front and back surfaces are provided in each concrete panel. This through hole is preferably provided with a plurality of holes uniformly on the front and back surfaces of the panel. The total area of the holes is suitably about 10% of the front or back surface of the panel. By providing such a through-hole, when applied to sea breakwaters and seawall consolidation, it is possible to obtain an effect of reducing lifting pressure (force lifting from below) acting on the mattress.

Top view of concrete mattress Exploded view before connecting concrete panels Plan view of each panel Partial schematic perspective view showing an example of the engaging convex portion and the engaging concave portion Conceptual diagram showing the state of concrete mattress laying

Explanation of symbols

A-outer panel, B-outer panel, C-inner panel, D-side end panel, E-side end panel, 10-fitting recess, 11-engagement recess, 12-fitting projection, 20-fitting Concave part, 21-engagement convex part, 22-fitting convex part, 30-fitting concave part, 31-engagement convex part, 32-engagement concave part, 33-fitting convex part, 40-fitting convex part, 41 -Engaging convex part, 42-engaging concave part, 50-fitting concave part, 51-engaging convex part, 52-engaging concave part

Claims (7)

A concrete mattress formed by using a concrete panel and connecting a plurality of adjacent panels to each other in a planar manner by hinges provided on the side of the panel.
Engaging recesses are formed on both end faces of the engaging recess provided on the side of the concrete panel, and the other projecting side of the panel to be joined to the panel is a fitting protrusion that is inserted into the engaging recess. Are formed on the end surface of the fitting convex portion, and the engaging concave portion of the fitting concave portion and the engaging convex portion of the fitting convex portion are formed. The concrete mattress according to claim 1, wherein a hinge portion of each panel is formed by the portion.
In the hinge part of the panel according to claim 2, instead of the engaging concave part of the fitting concave part, an engaging convex part is formed in the fitting concave part, and instead of the engaging convex part of the fitting convex part, A concrete mattress in which an engagement concave portion is formed in the fitting convex portion, and the hinge portion is formed by the engagement convex portion of the fitting concave portion and the engagement concave portion of the fitting convex portion.
Outer panels A and B having a fitting recess on one side of the panel, an inner panel C having a fitting recess on both sides of the panel, and a side end panel D having a shape obtained by dividing the inner panel C in the axial direction, E is used, and an engagement recess is formed on the end surface of the engagement recess of the outer panel A, while an engagement protrusion is formed on the end surface of the engagement recess of the outer panel B. , Engagement convex portions are formed on both end surfaces of the fitting recess on the panel A side of the inner panel C, and engagement concave portions are formed on both end surfaces of the fitting recess on the panel B side of the inner panel C, The side end panels D and E are respectively formed with engaging concave portions and engaging convex portions on both side end surfaces of the fitting convex portion, and the side end panel D and the side end panel E are symmetrical to each other. Each panel is flat so that it can be bent by fitting the engaging convex part of the panel adjacent to the engaging concave part. Concrete mattress according to claim 2 or 3 is connected to.
The front half of the inner panel C and the rear half of the other inner panel C in series with the inner panel C are integrally fitted in the fitting recess of the outer panel A, and the engaging projections of each panel C are the outer panels. The outer panel A and the inner panel C are connected by a hinge portion by fitting in the engaging recess of A, and the front half of the outer panel B and the outer panel B are connected in series to the fitting recess of the inner panel C. The rear half of the outer panel B is integrally fitted, and the engaging projections of each panel B are fitted into the engaging recesses of the inner panel C, whereby the inner panel C and the outer panel B are hinge portions. The concrete mattress according to claim 4, wherein the panels are connected to each other and are connected to each other in a flat shape so as to be bent.
In Claim 5, the fitting recessed part and fitting convex part of adjacent inner side panel C fit, and the inner side panel C of multiple rows is connected, and the outer side panel A and the outer side panel B are connected on the both sides. A concrete mattress according to claim 5.
The concrete mattress in any one of Claims 1-6 in which the hole which penetrates the front and back of each panel made from concrete is provided.

Images