JPS5820341B2 - Reinforced concrete blocks for retaining walls - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the formation of an earth retaining wall, and the present invention relates to an earth retaining retaining wall constructed to increase the construction speed while reducing the construction area and construction time, and also to eliminate construction pollution. It concerns reinforced concrete blocks for walls.

The formation of retaining walls is an essential condition for creating elevated sites.
To form a retaining wall using concrete blocks, first, we start with foundation work such as a flat foundation, pile foundation, anchor foundation, etc. according to the soil quality of the foundation at the site, and then we pile up concrete blocks on top of it. The retaining wall was completed by installing drainage pipes at appropriate locations.

However, in the above conventional method, the retaining wall height is 5. The site should be narrowed by using a horizontal plane of 2.5 m relative to Om.

In addition, the blocks were made small to reduce unevenness on the slope, which required a lot of effort and slowed down the construction process.

Furthermore, as the retaining wall becomes taller, there are various other drawbacks, such as the need to provide more room for work on the rear side, that is, on the site side.

The present invention is a reinforced concrete block for retaining walls, which was devised to solve the above construction disadvantages, and will be described in detail below with reference to the drawings.

A is a block of the present invention and has a rectangular shape with an appropriate thickness.

A drainage groove 1 with a semicircular cross section extending from the front and rear surfaces is bored in the center of the upper surface of the block A, and a semicircular cross section of the drainage groove 1 which extends from the front and rear surfaces as described above is provided at each left and right end of the upper and lower surfaces. A half-drain groove 2 forming a drain groove 1 is missing, and a guide protrusion 3 extending from the front and rear surfaces and having a shape that matches the drain groove 1 is protruded from the center of the lower surface.

When the blocks A are stacked in a staggered arrangement, there is a drainage groove 1 with a semicircular cross section on the upper surface of the block, and a circular drainage groove from the drainage half grooves 2, 2 on the lower surface of the left and right blocks arranged on the upper surface. Hole B is formed.

In addition, the guide protrusion 3 on the lower surface of the block is merged with the semicircular part formed by the drain half grooves 2, 2 of the left and right blocks arranged below it, so it is firmly fixed without leaving any position. It is.

Furthermore, the block A has an appropriate number of steel bar holes 4 having an appropriate mouth shape that extend from the upper surface to the lower surface and are symmetrically drilled with the drain groove 1 and the guide protrusion 3 as centers, and the upper edge of the steel bar hole 4 is A tightening nut storage stepped portion 5 is cut out in the hole.

When using this block when forming an earth retaining wall, insert the PC steel rods protruding in parallel onto the foundation plate of the retaining wall into the steel bar holes 4.
Then, the gaps in the steel bar holes 4 are filled with a resin filler to fix the PC steel bars while the blocks are arranged in parallel.
A retaining wall is created by applying joint material to the outside surface of each joint line.

If blocks are stacked in two or three tiers, the block becomes unstable, so a tightening nut is screwed onto the exposed tip of the PC steel plate to tighten the stacked blocks. This is a stepped portion for storing and fixing the tightening nut.

Further, in the block A, reinforcing bars 6 are buried at appropriate positions so as to thread around the outer periphery of the steel bar holes 4 and between each hole.

The block is reinforced by the reinforcing steel bones 6, and a block stronger against earth pressure than conventional blocks can be provided.

The reinforced concrete blocks for retaining walls of this invention having the above structure have the following effects as a single block: a. Drain holes B are naturally formed when the blocks are arranged in a staggered manner, so it is not necessary to insert drain pipes one by one as in the conventional case. No need to form.

b. The left and right drain half grooves formed on the upper surface of the block engage with the guide protrusion 3 formed on the center of the lower surface of the block stacked above when forming the retaining wall, so that the blocks are not aligned with each other. A strong and stably fixed retaining wall is completed.

Furthermore, since the placement positions of the blocks are fixed during construction, construction can be carried out extremely easily.

C. Since the reinforcing steel frame 6 is buried inside the block, it is possible to provide a block with strong strength against earth pressure.

Further, when a retaining wall is formed using the reinforced concrete block for retaining walls of the present invention, the following effects can be obtained.

a. The amount of land used is kept to a minimum.

b. Formwork, supports, scaffolding, etc. are not required.

Even if the height of the C1 retaining wall becomes too high, the amount of substratum removed can be kept to a minimum.

Therefore, the amount of backfilling or embankment is also minimized.

d. Construction speed is fast due to the use of resin fillers, concrete adhesives, etc.

e. Since they are arranged in a staggered manner and are tightened with PC steel plates every few stages, the strength of the vertical and horizontal connections is excellent.

[Brief explanation of the drawing]

FIG. 1 is a front view of the reinforced concrete block of the present invention, FIG. 2 is a side view of the same, and FIG. 3 is a plan view of the same. FIG. 4 is a front view of the blocks of the present invention stacked on a retaining wall. A...Block, B...Drain hole, 1
...Drain groove, 2...Drain half groove, 3
...Guiding protrusion, 4... Steel bar hole, 5...
・Tightening nut storage section, 6...Reinforced steel frame.

Claims (1)

[Claims] 1 It has a rectangular shape with an appropriate thickness, and has a drainage groove 1 in the center of the top surface that extends to the front and rear surfaces, and a drainage groove 1 that extends to the front and rear surfaces and forms a half-shape at the left and right ends of the upper and lower surfaces. A drain half groove 2 is missing, and a guide protrusion 3 that extends from the front and rear surfaces and has a shape that matches the drain groove 1 is provided in the center of the lower surface, and a steel bar hole that extends from the upper surface to the lower surface and has an appropriate mouth shape. A suitable number of holes 4 are drilled symmetrically around the drain groove 1 and the guide protrusion 3, and a tightening nut storage step 5 is cut at the upper edge of the steel hole 4. This is a reinforced concrete block for retaining walls, which is made by burying reinforcing steel frames 6 in appropriate positions around the outer circumference of the hole and between each hole.