JPH0693624A - Soil holding member and soil holding structure - Google Patents

Abstract

PURPOSE: To strongly protect a bank by easily piling to a desired height. CONSTITUTION: Soil holding structure is constituted by piling a plurality of T-shaped members 10 respectively consisting of a front surface part 26, a leg part 18 extending vertically from this front surface part and a base part 12 fixed to be orthogonal with this part 18. It is possible to engage the member 10 of an upper part to a part where the part 26 is higher than the part 18 to pile. In addition, it is possible to provide a notch 43 to the part 46 to constitute a drain hole for using after construction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soil-holding member and a soil-holding structure composed of modular precast castor creates. This soil retention structure can be used for landscaping, terrace formation, slope protection, noise barriers and erosion protection.

[0002]

BACKGROUND OF THE INVENTION Conventional soil retaining walls have been formed from a plurality of standardized block units. These block units were stacked and assembled together to the desired height without the use of mortar. Such a system is disclosed in U.S. Pat. No. 328,645. In the prior art, the entire retaining wall would use the same foundation, since each block of the entire retaining wall rests on and depends on the block immediately below it. Other prior art systems require a connecting member for the member or assembly, which limits the versatility of the wall. United States Patent No. 40502
No. 54 discloses a modular retaining wall system having a plurality of precast tieback members laterally spaced apart along a straight line. The tieback member includes an upright column that presses and positions the holding panel so as to bridge the lateral space between the pair of tieback members.

Prior art panels have a concave convex cross section in a horizontal plan view, ie a circular or elliptical arch cross section, to withstand the load from a compressed soil filling under pressure. You can do it. A disadvantage of the arched panels of the present invention is that the panels may crack if the ends of each panel are not completely enclosed or covered by the tieback members. Also, the tieback members and panels had to be cast separately, which was time consuming and expensive, and the two members had to be purchased and shipped separately. Another prior art curved retaining wall system is disclosed in U.S. Pat. No. 4,341,491. The invention discloses curved front wall panels attached to front wall support members, which on the other hand are attached to the curved rear wall via tensioning members.

[0004]

Such systems are fairly complex, can result in cracks in the curved front panel, and require a large number of components. Therefore, a first object of the present invention is to provide a soil holding member that forms a soil holding member and a tieback member with a single member. It is a second object of the present invention to provide a soil retaining wall structure which is free from cracks and which can be conveniently stacked to a desired height to form a wall. A third object of the present invention is to provide a soil retaining structure having a conveniently patterned front plane and drainage holes.

[0005]

According to a first aspect of the present invention, there is provided a front wall portion, a leg portion mounted at a right angle to the front wall portion, and a front wall portion at a right angle to the leg portion. Consisting of a base part attached to the leg part parallel to the part,
The height of the leg portion is lower than the front wall portion and is the same as the height of the foundation portion, and the front wall portion has a substantially flat front surface. Achieve the purpose of 1. According to the second aspect of the invention, the third object is achieved by the single cast soil holding member characterized in that the front wall portion and the foundation portion of the soil holding member are provided with notches for drainage. According to the third aspect of the invention, the second object is achieved by stacking the soil holding members according to the first or second aspect. In the invention according to claim 4, when the soil holding member according to claim 1 or 2 is stacked, the lower portion of the upper front wall portion is brought into contact with the corner formed by the front wall portion and the leg portion. The third object is achieved by stacking in a step-like manner.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention is shown in FIGS.
Will be described in detail with reference to. In the first embodiment, each member of the soil holding structure is substantially T-shaped as shown in FIGS. Each T-shaped earth retaining member 10 is composed of a front surface portion 26, a leg portion 18 extending vertically from the front surface portion 26, and a foundation portion 12 attached to the leg portion 18. There is. The front surface portion 26 and the leg portion 1
8 and the base portion 12 are cast as a single member.
Each leg portion 18 is installed in the bank at a constant distance from the front surface portion 26, and has a function of releasing pressure from the front surface portion 26 to the rear ground. Base 12 of each holding member 10
Is formed so that the friction between the ground soil and the soil holding member 10 is large so that the completed wall does not fall out or incline outward. The leg portion 18 extends in a horizontal direction perpendicular to the front portion 20. On the side opposite to the front part 20, the leg part 18 is joined to the base part 12. The base 12 also has a substantially flat surface 27. Upper surface 19 of leg 18
The upper surface 22 of the base portion 12 is slightly lower in the vertical direction than the tip of the upper surface 21 of the front portion 20. That is, leg 1
The vertical height of 8 and the base 12 is lower than the vertical height of the front part 20.

FIG. 3 shows that the earth retaining member 10 is piled up to form a retaining wall. As shown in this figure, due to this height difference, two or three layers are stacked.
It can be constructed like a staircase like 4. Location 28 of each leg 18
Conveniently fits underneath the next front 20 of the upper layer.
And the soil is held at different levels. Such a bank can be placed, for example, on the bank below the road to support the road or on the bank above the road to protect the slope. In the completed soil holding structure, the soil holding member 1
0 forms a substantially flat front surface. FIG. 4 shows the soil holding member 1.
Shown is an arrangement of soil retention structures that are staggered rather than stacked directly. In the figure, the base portion 12 is shown by a dotted line. According to the soil holding member 10, various types of holding walls can be constructed. For example, as shown in FIG. 5, the convex portion 32 can be constructed similarly to the straight portion 33. Walls 36 of FIG. 6 have adjacent members arranged alternately. The part 25 of the inserted soil retaining member 10 overlaps with the back of an adjacent member to completely retain the soil filling material 60. It also provides a convenient finished appearance.

FIG. 7 shows a noise blocking wall 35 constructed by using the soil holding member 10 of this embodiment. The front portion 20 and the base portion 12 are sized to engage with each other and be arranged alternately. The soil filler 60 is filled in the internal space to form an efficient noise wall. Each soil holding member 10
Is a single precast concrete structure. It is desirable to use low moisture cement or low slump concrete for easier casting and increased strength. Casting requires only sufficient water in the mold to form concrete. Precast concrete structures can be reinforced by conventional techniques such as prestressing, post tensioning. Each soil holding member 10 can be cast separately, but there is also a method of casting two or more members at a time. In this method, in order to obtain a substantially flat surface on the surface 26 of the front part 20 or the surface 27 of the base part 12 in order to divide it in two after casting, a mold for simultaneous casting is produced. In other words, each holding member 10 is cast like a siamese twin in a continuous state after being separated from each other.
The mold contains mold channels, which are later separated in two so that they are twice as wide as a single front and the legs 18
And the channel extends laterally to form the shape of the base 12. Low slump concrete is poured into a mold or mould. Grooves, rods and other members (not shown) and the like can be placed in the still soft concrete to aid in the separation of the front 20.

Once the concrete has dried, the mold or mold is removed and the result is divided and separated along the groove to form two generally T-shaped soil retaining members 10. The division of the two front parts makes the appearance of the substantially flat front of each part attractive and decorative. FIG. 8 shows the soil holding members 40, which are the second embodiment of the present invention and are alternately arranged. The soil holding member 40 is provided with a leg portion 48 that is orthogonal to the front portion 46 and the base portion 42. Notches 41, 4
3 is provided on the front portion 46 or the base portion 42 or both.

As shown in FIG. 9, when the soil retaining member 40 is stacked to form a retaining wall, the notch 4 is formed.
Reference numerals 1 and 43 form a drain hole 45. In this example,
Soil holding member 40 having cut portion 43 and cut portion 4
A soil retaining structure is formed by combining soil retaining members 40 that do not have the three. That is, the soil holding member 40 used in the lower two steps has a notch 43, and the soil holding member 40 used in the upper two steps has a notch 43. ing. As shown in FIG. 9, the soil holding member 40 can be stacked while being staggered, or can be directly stacked on top of one another. 10 and 11 show a noise barrier using the soil holding member 40 and the soil filling material 60. The front portion 46 and the base portion 42 are selected to have a size in which an overlapping area 47 is formed. In all examples and arrangements the width of the bases 12, 42 is wider than the thickness of the legs 18, 40. This is to increase the friction against the outward movement of the filling or bank.

[0011]

According to the soil holding member of the present invention, it can be mass-produced at a place away from the construction site and can be stored as desired,
And they can be easily built with minimal technology and management. With the soil holding structure of the present invention, the soil holding structure can be easily and firmly obtained. Further, if a soil holding member with a cut is used, it can be used as a drainage hole after the construction is completed.

[Brief description of drawings]

FIG. 1 is a perspective view of a soil holding member according to an embodiment of the present invention.

FIG. 2 is a perspective view of a soil holding member according to an embodiment of the present invention.

FIG. 3 is a diagram showing an example of stacking soil holding members according to an embodiment of the present invention.

FIG. 4 is a front view of a bank constructed by stacking soil holding members according to an embodiment of the present invention.

FIG. 5 is a plan view of a bank constituted by a soil holding member according to an embodiment of the present invention.

FIG. 6 is a plan view of a bank constituted by a soil holding member according to an embodiment of the present invention.

FIG. 7 is a plan view of a bank in which soil holding members according to an embodiment of the present invention are arranged alternately.

FIG. 8 is a perspective view of a soil holding member according to a second embodiment of the present invention.

FIG. 9 is a front view of a bank composed of a soil holding member according to a second embodiment of the present invention.

FIG. 10 is a plan view of a bank composed of a soil holding member according to a second embodiment of the present invention.

FIG. 11 is a plan view of another bank constituted by the soil holding member according to the second embodiment of the present invention.

[Explanation of symbols]

 2, 3 and 4 ... Stacked layers 10 ... Soil holding member 12 ... Foundation part 18 ... Leg part 19 ... Upper side 20 ... Front part 21 ... Front upper surface 22 ... Foundation upper surface 40 ... Soil holding member 41 ... Notch Part 42 ... Foundation part 43 ... Notch part 46 ... Front part 60 ... Soil filling material

Continuation of front page (72) Inventor H. Joe Mahine 80295 Denver, Colorado, United States 1860 Lincoln Street, Suites 1026

Claims (4)

[Claims] 1. A front wall portion, leg portions attached at right angles to the front wall portion, and a foundation attached to the leg portions at right angles to the leg portions and parallel to the front wall portion. A single cast soil holding, characterized in that the height of the legs is lower than the front wall portion and is the same as the height of the foundation portion, and the front wall portion has a substantially flat front surface. Element. 2. The soil retaining member according to claim 1, wherein a notch for drainage is provided in the front wall portion or the foundation portion of the soil retaining member. 3. A soil holding structure comprising the soil holding members according to claim 1 or 2, which are stacked. 4. When stacking the soil holding member according to claim 1 or 2, the lower portion of the upper front wall portion is brought into contact with a corner formed by the front wall portion and the leg portion to form a staircase shape. The soil retaining structure according to claim 3, wherein the soil retaining structure is stacked.