JPS63233123A - Concrete block for sheathing-retaining wall and construction of retaining wall therewith - Google Patents

Abstract

PURPOSE:To reduce the cost of construction and meet the social need by a method in which two kinds of concrete blocks of wide wall face and narrow wall face are used for front-stacking work and back-stacking work. CONSTITUTION:Concrete blocks E having wide wall face 2 and narrow wall faces 1 with a given slope angle are used for constructing a retaining wall whose front side is constructed of the wide wall faces 2 for satisfying the function of the general retaining wall. Whereas, when the retaining wall whose front side is constructed of the narrow wall faces is built, the retaining wall provides suitably a place for living and growth of living things. In either case, reinforcing bars S are thrusted through the upper and lower connecting holes 4, and good-quality cement mortar is packed into the voids to enhance strength.

Description

DETAILED DESCRIPTION OF THE INVENTION 1) Industrial Application Field This invention relates to earth retaining walls used for rivers, roads, etc.

2) Conventional technology As the old masonry retaining walls have become obsolete, in recent years Kokunkrete masonry blocks (Tl5A5232) have been most frequently used, but now that excellent block masons are becoming rare, large masonry blocks ( A construction method with a weight of 1 to several tons and a square area of 1 to 2 mm has been developed, and construction methods using cranes and the like are now in widespread use.

*The following is a reference to the main body retaining wall's Kokunkrete block surveyor.

3) Example-1 If the wall (large) 2 is used in front of the retaining wall as shown in FIGS. 3 and 5, this is a construction method that has a general retaining wall function.

cormorant.

If the gap between the reinforcing bar S and the through hole 4 is filled with high quality mortar, durability will be improved.

The shorter the reinforcing bars S, the better the workability, but if a high-performance connection between reinforcing bars is required, a coupler can be inserted.

4) Example-2 As shown in Figures 4 and 6, in a river revetment, wall surface (small) 1 is used in front of the retaining wall, and 13 parts of the lowest block are filled with chestnut stone, earth, etc. 11. , cavities adjacent or consecutive to each other.

Along with E, D, E, etc., it provides an optimal space for fish etc. to live and breed.

In addition, the chestnut stone, earth and sand 11 placed in the D part of the bottom block, together with the sphagnum moss, algae, etc. that grow there, form a suitable growth environment for the larvae of fireflies, dragonflies, etc.

5) Problems to be solved by this invention, solution methods, effects, etc. ■ Diversification of social needs We have entered an age where retaining walls are no longer satisfied with mere earth retaining functions.

Therefore, as shown in the embodiments shown in FIGS. 4 and 6, functions such as environmental conservation and environmental improvement are added.

■ Block cost reduction Formwork costs account for a few percent of the block cost in industrial production.
It can reach ~20%, making the block expensive.

Therefore, by using one type of block for multiple purposes, investment in formwork can be reduced and the cost of blocks can be reduced.

It is similar to the stacking process.

In other words, it goes without saying that if the stockyard has a large slope, the workability of stacking will deteriorate.

Here, to explain using FIG. 7, A=I; an-a, B=tan b8 C=B
-A formula holds true.

The design slope of retaining walls is often about 0.3 to 1.0, and B=1
The angle is between 7° and 45°.

When A=O'', C=B.

Assuming that a=o and b=1.0, C=45. In this case, the sliding force generated at the moment when a block lifted down by a crane or the like comes into contact with a lower block etc. impairs work efficiency and extremely impairs labor safety.

According to the present invention, when b=1.0 and assuming a=0.3, C=B-A=ta mil--ffd, a-a=45''-
]76-28+.

If the inclination angle of the foundation concrete or the inclination angle of the upper surface of the block is at this level, it will have the effect of maintaining workability and labor safety of the construction work. The present invention is intended to meet social needs regarding earth retaining walls and to reduce construction costs and safety, as shown in the second part of the elements that constitute the anti-earth pressure resistance of retaining walls.

[Brief explanation of the drawing]

Figure 1 is a plan view of the block Figure 2 is a side view thereof Figure 3 is a perspective view of Embodiment 1 Figure 4 is a perspective view of Embodiment 2 Figure 5 is a side view of the block Cross-sectional view, No. 60 is Yu 41-Kyo no Machimen Tomoe, Fig. 7 is an explanatory diagram of the workability of block construction, etc. Explanation of numbers and symbols 1. Wall surface of the block (small) 2. Wall surface of the block (large) 3. Block joint wall 4, block connecting hole 5, hole 6 in the wall (large), hole 7 in the wall (small), joint wall 3. Hole 8 made in the hole 8, foundation concrete 9 for the retaining wall, backfill earth and sand behind the wall 10, water surface 11 in front of the N body, chestnut stone and earth and sand placed in the D part of the bottom block, etc. Explanation of the alphabetic code A Inclination angle B of the retaining wall A numerical value expressed as a gradient of the installed inclination angle aA of the retaining wall C A numerical value expressed as a gradient of BB Inclination angle D of the top surface of the foundation concrete or block
Cavity part E contained in a single block Cavity part formed between adjacent blocks H Horizontal direction line R Right angle 3° S Steel rod for connection ■ Vertical direction patent representative Kenji Okubo

Claims (1)

[Claims] 1) As shown in Figure 2, the concrete block wall (
Large) 2 has an inclination angle A in advance, and the wall surface (small)
1 is characterized in that a wide-area portion is provided where the side wall body 3 that connects the walls 1 in substantially parallel contact with the wall surface (large) 2, and that this portion has a vertical connection hole 4. 2) In Figures 3 and 5, where wall surface (large) 2 is the front of the retaining wall, a general retaining wall function is provided. In addition, in Figures 4 and 6, where wall surface (small) 1 is the front of the retaining wall, cavity D, chestnut stone, earth, etc. 11 provide a place for fish, insects, etc. to live and breed. This relates to a construction method in which the front and back surfaces of concrete blocks are constructed in front of a retaining wall.