JPH09209331A - Curve construction method for large makeup freestanding block - Google Patents

Abstract

(57) [Abstract] [Problem] In a construction concrete block having a wall surface gradient, there is a problem that a large self-supporting block facilitates its construction even on the site of complicated and various inner curves such as a hairpin curve and outer curves. SOLUTION: An ordinary large self-supporting block and a height of this block are the same as the front wall joint end width of about 1/2 of this block. Based on the minimum radius of the site, only the difference between the arcs is wide, if it is an inner curve product, it is made narrow and both the front and back wall surfaces are decorative surfaces, and the left and right vertical ends of the contour end are arcuate , We manufacture multiple types of products as long and short products for curves, which are integrated with the abutment shaft body with the upper and lower horizontal ends as horizontal base ends,
At the same time that these products will be used separately in combination, a means to construct an anchor block as a virtual back anchor version from the bottom of these blocks will also be taken.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the construction of a large-sized makeup freestanding block in a site where a wall body normal such as a hairpin curve having a wall surface gradient is complicated and diversified.

[0002]

2. Description of the Related Art Conventional large-scale free-standing blocks (1000 x 1
000 x 350 mm, 1000 x 500 x 350 mm 1 m ² used 1 piece or 1 m ² 2 pieces used) With a relatively small radius such as a hairpin curve, and with a complex variety of curves, it is the back of the construction A self-supporting block without formwork is unreasonable, and its construction is entirely based on the Japanese Industrial Standard Concrete Block (JIS-A-532).
Figure 3 of the standard table of 8) used in 1 m ² or 10 used in 1 m ² of 3). Basic or reference diagram of stacking block 1. As shown in the product plan of the above, the block is not self-supporting with the squeeze squeezed out. When placing concrete, use a block that requires a back formwork (a block that uses a cylinder support for the butt at the time of construction). There was a method of mounting a frame and pouring concrete.

However, these products require a construction engineer called a mason for the construction at a site having a wall surface gradient, and they are not efficient because they are cured every time they are constructed. In addition, there was a defect that the product moved due to the vibration of the vibrator used when placing the concrete in the case, and the building wall surface for the use of 8 to 10 blocks per 1 m ² When the height was high and the length was large, the pattern structure of the makeup block was small and it was considered to be inadequate as an environmental building wall.

In addition, the method of placing a mold in the gap and placing concrete requires a long time and an extra working step to adjust the finished surface after the concrete is hardened by shaving and stacking method and the unevenness.

Therefore, the technical committee of the Akita Concrete Block Industrial Association has been engaged in designing, manufacturing, and construction sites of these products for a long time in each company, and has the drawbacks and problems of the conventional products and the construction method described above. In consideration of the above, we made many model blocks in an effort to develop a product that does not require a back formwork when pouring concrete and that can be installed on a variety of complex sites, such as a hairpin curve with a relatively small radius. As a result of repeated research, the problem to be solved by the product of the present invention is as follows.

[0006]

[Problems to be Solved by the Invention] The type of product formwork is minimized, the manufacturing is not complicated, the formwork cost is low, and a back end that can be self-supporting is also provided on the back side during construction. It is a product that can be easily installed by anyone without the need for a craftsman, who is also a mason, and a product type that does not move the block due to the use of a vibrator when pouring concrete into the concrete, which makes it easy to stack curves. Like

[0007] also to like can be applied by outside curve in the inner curve of a relatively small hairpin curve of radius in combination with the large free-standing product of the two used in the 1m ² with a single use or 1m ^2.

An environmental makeup block product that does not feel uncomfortable by utilizing the unevenness of the makeup surface.

In addition, there is also a problem that sufficient stability is ensured against earth pressure stress of a curve, particularly earth pressure of an inner curve, and the solution means of the product of the present invention is as follows.

[0010]

The curve block has the same height as a conventional ordinary decorative block, and the front width is about 1/2 of that of the ordinary decorative block. The curve is long and the inner curve is short), and the contour is adjusted to the bottom surface.

Further, as a block having self-supporting joints of double-sided makeup with the same height and a short front and rear wall width, about 3 types are manufactured for curves as well as ordinary blocks, and these are used as the radius of the curve. Depending on the situation, we will combine it with ordinary blocks and use them properly to take measures to construct curved retaining walls. This will be described with reference to the drawings of the embodiments.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION First, the length of a block used most often r. (The length from the front end to the tail end,
According to JIS-A-5323, the convex portion up to 20 mm from the front end of the front surface may be added in addition to the length).

Wall method gradient (usually 1: 0.3 to 1:
In the layered construction concrete block having 0.5), the decorative wall surface on the front side is 1. And rear buttress wall 2. And are the plate-shaped rectangles having substantially the same contour (actually, the contour of the buttocks wall is made smaller as the construction clearance), and this is the abutment shaft body 3.3. The front wall width a. Back wall width b. A large, horizontally-oriented front decorative ordinary block that is self-supporting. And

This normal block and height h. Same as above 1. Width of the curve block is about 1/2. Based on the above, the rear wall joint width is a-1. Shorter 2α. Table 1. Considering the numerical value (shortened by 50 mm as standard), the dimension is set to the width of the back wall joint end width of the curve block b-1. And if it is an inner curve, the convex decorative surface 1-1. Is constructed on both the front side and the buttocks side, and if it is an outside curve, the buttocks wall joint width on the back side b-1.
Is the front wall joint end width a-1. Longer 2α. Double-sided concave decorative surface configured as 1-2. Version of. This is one gully shaft 3. However, the contoured ends of the front side and the buttocks side are both horizontal at the top and bottom, and the left and right ends are arc-shaped at the both ends in order to ease the curving and construction clearance.
4. The long and short block B for curves
-1. And

[0015]

[Table 1]

Furthermore, from this block, both the front end wall width and the buttocks wall end width are long and short 2α. Long and short block for curves B-2. (The outer curve is long, the inner curve is short), and the proportional length 2α. Long and short block for curve B-3. With multiple types of manufacturing, the front decorative ordinary block A. It is a method of constructing a curve for a large makeup freestanding block that is used separately in combination with.

In practice, if a site with a radius of 5 m in [Table 1] can be dealt with, the curve product with the largest width is shown in the dimensional plan view of the actual design example because the radius is almost larger than this. 6] the front wall joint width (Maetula wall width) is 500 mm, and the back wall joint width (Ushiro wall width) is 50 mm shorter 450 mm (outer curve is 500 mm longer than 550 mm). The next product has a front wall end width of 400 mm, a back wall end width of 50 mm, a short length of 350 mm, and a 300 mm end of 250.
It is a multi-mm manufactured product.

Although not shown in the drawings, the manufacturing method of the self-supporting product with double-sided makeup is not shown. Use a (long) formwork that allows the pallets with a decorative pattern on both sides to be guided, and place concrete on the retaining wall with the decorative wall on the front side facing down. When it reaches the height, guide the outline frame of the holding part and push in the pallet (form frame) with the decorative surface pattern of the buttocks wall in the press state to manufacture,
A method of demolding the mold after initial curing of the product.

With this, the decorative wall surface and the buttocks wall surface on the front side are erected on both sides (a bear having an arc-shaped joint 4.4), and one end face of the joint on both sides (upper front wall). A method of pouring concrete from the joint and the horizontal joint above the buttocks, and manufacturing it as the finished surface.

Bubbles and craters can be formed on the upper construction surface of the products produced by the manufacturing method described in the upper stage, however, at the time of construction, these products are always filled with concrete. Since it is a product that does not have any problems, concrete adhesion is rather good.

There are the above two methods for manufacturing products. For the ordinary curve block and the outer curve block, the method of pressing the pallet (form) of the decorative surface pattern of the bottom wall of the previous stage is preferable. In the curved block, air bubbles are concentrated on the convex part of the important exposed surface, so it is better to place concrete from the end of the latter instruction.

In this way, the front decorative ordinary block A. Based on a product that is half the width of a normal block with the same product height, the double-sided decorative block in which the lateral width of the retaining wall is proportionately lengthened and shortened B-1. B-2.
B-3. Of the inner and outer curves, and these blocks are sometimes flipped over on both sides of the decorative face to form a gap interval formed according to the radius of the curve. Although it is not shown in the drawing, it is stacked as a self-supporting block without a back form, and the hollowed concrete D. Is installed to easily construct a retaining wall for the retaining wall of the block that has a slope on the wall surface.

In addition, when there is a possibility that the soil pressure on the rear surface may greatly change in the case of an inward curve, as shown in FIG. Joint hook designed to work with 5. The anchor block C. Connecting material as an embankment virtual back anchor plate 6. It is flexibly connected to secure stability against changes in earth pressure.
The present invention has the following actions and effects by constructing the curved block stacking retaining wall in this manner.

[0024]

[Operation and effect of the invention] The width of the front end of the curve block at the front end is 500 m.
m product (1000x500 for front makeup ordinary block A.
X 350 mm (when using 2 pieces at 1 m ² ), the width of the joint edge wall joint end width is 17.5 x from [Table 1].
2 = 35 mm, the construction clearance of the curve is 5-7 on one side
In consideration of mm, by setting it to 450 mm, it is possible to easily make a self-supporting stepped stack in a curve at both ends, and this is the basis of the curve block. Even if they are different, if there are multiple (usually about 3 types) products in addition to the large block, many combinations can be made at the same time by reversing the front side wall surface part and the buttocks wall surface part at the same time. By using the same one as shown in [Fig. 8] Construction development, it is possible to easily construct complex hairpin curves with a relatively small radius.

In addition, the bottom wall is closed according to the radius of the curve, and the vertical joint ends are arc-shaped joint ends. Therefore, the back formwork for pouring concrete (as in conventional block construction) ( It doesn't need a formwork that holds concrete in the body, nor does it require a mason.

Since the number of manufacturing molds is small because of the double-sided decorative surface that can be used upside down, as a mold that can adjust the height, the joint thickness is slightly larger (the joint mold is deeper). By manufacturing and placing it, by replacing the decorative surface formwork (pallet), a normal curve block, an inner curve block, and a simple attachment formwork can be used to manufacture outer curve block products with this formwork. Since the frame is frequently used, the cost of the formwork occupying the manufacturing cost of the product is reduced much more than before, and it is economical.

Since both the upper and lower ends of the front wall joint and the bottom and rear end walls have a horizontal joint ground contact surface, the body support collapses like a conventional block by using a vibrator at the time of pouring concrete into the barrel (conventional backup). In the narrowed down block of
Since it does not stand on its own during construction, there is no movement of blocks and support on the buttocks), and there is no worry about moving the concrete D.
Can be placed.

[0028] Also large products in 1 m ² in one use or 1 m ² 2 pieces are used, which in combination with the inner curve of the product is convex type shape pattern product obtained by projecting the central, products recess type the center of the outer curve By using a patterned product, the finished product does not have the discomfort of a straight line like the conventional product with a small radius.

In addition, even at the construction site where there is a possibility that the back surface earth pressure may change significantly in the case of an inner curve, the back surface of the block or the concrete reinforced concrete By providing a coupling hook adapted to work with the anchor block and flexibly connecting the anchor block with a connecting material as a virtual back anchor plate for the embankment, the stability of sliding and falling of the entire construction retaining wall is ensured. The curve construction method is more effective than the conventional method.

[Brief description of drawings]

FIG. 1 is a plan view showing an outline of construction of a standard example site of a hairpin curve.

FIG. 2 is a schematic cross-sectional view of an example site of a hairpin curve.

FIG. 3 is a front view, a plan view, and a side view of a large-sized self-supporting makeup ordinary block that is used for 1 m ² .

FIG. Product outline perspective view.

FIG. 5 is a schematic plan view of a normal curve block, an outer curve block, and an inner curve block according to the embodiment.

6 is a dimensioned plan view of a working design of a standard ordinary curve block (product height h. Is 500 mm).

FIG. 7 is a schematic view of a construction cross section showing a state in which an anchor block is attached.

FIG. 8 is a construction development view of a standard curve construction site.

[Explanation of symbols]

A front makeup ordinary block (large self-supporting) B-1. B-2. B-3 Long and short blocks for curves C Anchor block D Body concrete E Backing material F Basic concrete G Top end concrete H Good quality soil a Front wall width (of self-supporting front decorative ordinary block A.) a-1 Front wall mating Edge width (curve block front wall joint width) b Rear wall width (normal block) b-1 Holding wall joint width (curve block front wall joint width) h Height (of block Construction load) r Length of block (including surface protrusion up to 20 mm) α Long and short dimensions (1 piece is 2α) 1 Decorative wall surface (large normal block) 1-1 Decorative surface (internal curved block) 1 -2 Recessed decorative surface (outer curve block) 2 Back face wall surface 3 Abutment shaft body 4 Arc-shaped abutment 5 Joint hook 6 Connecting material

Claims (2)

[Claims] 1. In a concrete block for construction of a retaining wall with a wall surface gradient, a horizontally elongated self-supporting front decorative ordinary block A. And this block and height h. Similarly, the front wall joint end width a-1. As approximately 1/2 of this block, buttress width of the buttocks wall b-1. Is 2 for outside curve products
α. Widely, 2α. It is made narrow and both the front and back wall surfaces are decorative surfaces, and the left and right vertical joints of the contour joints are arc-shaped joints 4.4. With the upper and lower joints as horizontal joints, the culvert shaft body 3. The integrated product is a long / short block for curves B-1. B-2. B-3. Construction of curves for large makeup freestanding blocks, where multiple types of products are manufactured and these products are used in combination. 2. A front decorative ordinary block A. in response to a back soil pressure stress of a curve. Or long / short block for curve B-1.
B-2. B-3. Anchor block C. The construction of the curve of the large makeup self-supporting block according to claim 1, characterized in that it is flexibly connected and integrated as a virtual back anchor plate.