JPH0336327A - Block for stone pile protecting wall - Google Patents

Abstract

PURPOSE:To reinforce a structure by drilling a through hole for a PC steel material, which penetrates through upper and lower surfaces of a protrusive part, and forming a fitting protruding part in the upper surface and a fitting recessed part in the lower surface, in the protrusive part. CONSTITUTION:A block main unit 1 is formed of a protrusive part 1a, in which a through hole 1b is drilled, fitting protruding part 1c in an upper surface of the protrusive part 1a and a fitting recessed part 1d in a lower surface of the protrusive part 1a. Next, a bottom board 3 is cast with cast-in-place concrete, and the bottom end part of a single PC steel material 4 is fixed to the bottom board 3. Then the block main unit 1 is piled together, and the protruding part 1c of the block main unit 1, piled together in a lower step, is fitted to the recessed part 1d of that in an upper step. The PC steel material 4 is inserted into the through hole 1b, when piling is completed, the PC steel material 4 is tightened by a jack and the block main unit is firmly integrally formed by applying prestress. In this way, a structure can be reinforced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention is directed to masonry 4119! This relates to blocks for use. [Conventional technique 1111 1! This type of block for a retaining wall has a through hole 7a drilled through the upper and lower surfaces of the block body 7, as shown in FIGS. 8A and 18B, and as shown in FIG. 9. Next, the block bodies 7 were piled up while reinforcing bars 8 were inserted into the through holes 7a, and mortar 9 was filled into the through holes 7a to construct a retaining wall. [Problems to be Solved by the Invention] However, the above-mentioned conventional wall block A7 simply has reinforcing bars arranged in the through holes, and lacks integrity of the stacked block bodies. The structural strength as a 4jI wall could not be fully demonstrated. Furthermore, since the conventional through-holes were formed so as to pass through the upper and lower surfaces of the block body, there was a problem in that the position of reinforcement was limited by the thickness dimension of the block body. The present invention was made in order to solve the above conventional problems, and its purpose is to provide a block for masonry retaining walls that can sufficiently exhibit structural strength as a retaining wall. It is something. [Means for Solving Problem a] The block for a masonry retaining wall of the present invention has a protrusion B formed on the back side of the block body, and a protrusion P penetrating the upper and lower surfaces of the protrusion.
It is characterized by having a through hole for C steel material. The present invention is also characterized in that the protruding portion is provided m at the rear, and a plurality of through holes are bored in parallel along the extending direction of the protruding portion. Furthermore, a fitting convex portion is formed on the upper surface of the protruding portion, and a fitting opening portion capable of fitting with the fitting convex portion of the lower block is formed on the lower surface. [Example] Hereinafter, an example of the present invention will be described with reference to the drawings. In Figures 1A, 1B, and IC, 1 is a block body, which has a surface area approximately four times or more that of a normal block, for example, a height (vertical dimension) of 60 to 100 mm, a width (horizontal dimension) ) has a size of 120 to 180 c-. In the present invention, the size of the block body 1 is not limited to the above-mentioned specific dimensions. A protruding portion 1a is integrally formed on the back side of the block body 1. A through hole 1b is bored through the upper and lower surfaces of the protruding portion 1a. *In addition, a fitting protrusion 1c is provided on the upper surface of the protrusion 1a. On the other hand, a fitting opening 1d is formed on the lower surface of the protrusion 1a, and the lower block body 1 of the stacked
It is designed to fit with the above-mentioned fitting protrusion IC. le
is a gripping protrusion, which is gripped by, for example, a manipulator of a masonry machine to lift the block. The two protrusions 1a of this embodiment are provided at positions 174 apart from both ends with respect to the width dimension of the block body. Therefore, as shown in FIG. 12, when the upper and lower blocks are stacked in a staggered manner, the fitting protrusion 1c
is fitted into the fitting recess 1d of the block main body 1 diagonally above. 3A, 3B, and V$3C show another embodiment of the block body, which has basically the same structure as the block body 1 of the above embodiment, but this embodiment The protruding part 2a of the block main body 2 of the example is formed to extend rearward compared to the protruding part 1a of the block main body 1, and two Through holes 2b are bored in parallel. Next, a method of constructing a retaining wall that goes up on the block bodies 1 and 2 of the above embodiment will be explained. First, as shown in FIG. 4A, the bottom plate 3 is poured with cast-in-place concrete at the location where the retaining wall is to be constructed. At this time, the lower ends of the two PC steel members 4 are fixed to the bottom plate 3. Next, as shown in FIG. 4B, the block bodies 2 are stacked. At this time, the two PC steel members 4 are inserted into the two through holes 2b formed in the protruding portion 2a of the block body 2, respectively. Subsequently, as shown in FIG. 4C, the block body 1 is stacked on the block body 2 stacked above. At this time, the through hole 1b bored in the protrusion 1a of the block body 1 is
Insert the PC steel material 4. When the stacking of the block bodies 1 and 2 is completed, the prestressed PC steel material 4 is tensioned using a shovel or the like to apply prestress to the block bodies, thereby firmly integrating the block bodies 1 and 2. 5 is the Kasaishi block. Minami, in the above embodiment, the long PC @ material 4 is fixed to the bottom plate 3 in advance, and the PC steel material 4 is inserted by stacking the block bodies while inserting it into the through hole. As shown in Figure 5, the through hole 1 of each block body 1
A short prestressed steel material 5' is inserted in advance into the PC steel material 5', and a male thread 51 and a female thread 5 are attached to the upper and lower ends of the prestressed steel material 5', respectively.
b′ is provided, and when stacking the block bodies,
The upper and lower PC steel members 5' may be sequentially connected. A coupler may be used instead of the screws 5m' and 5b'. FIG. 6 shows a relatively low retaining wall constructed from a single piece of PC steel, using only the block body 1. Figure 7 shows a relatively tall structure constructed from three pieces of PC steel! This shows an I-wall, and the lower block main body 6 is constructed by extending a protrusion further rearward than the block main body 2 and having three through holes bored therein. [Effect of the invention 1] A protruding part is formed on the back side of the block body, and a through hole for the PC steel material is bored through the upper and lower surfaces of the protruding part, so that the stacked block bodies can be prestressed by the PC steel material. It is possible to strongly integrate the wall by applying the following functions, increasing the structural strength of the retaining wall. 2) Since the through hole is drilled in the protruding part, the thickness and weight of the main body of the pro/re can be reduced, and the length of the protruding part can be freely set, and the position of the PC steel material can be adjusted. It is possible to arbitrarily design the number of retaining walls and the number of retaining walls of any size. 3) A fitting protrusion is formed on the upper surface of the protruding part, and four fitting parts that can be fitted with the fitting protrusions of the lower block are formed on the lower surface, making the block body safe and highly accurate. can be stacked on top of each other.

[Brief explanation of drawings]

FIG. IA is a plan view showing an embodiment of the block body,
Figure IB is its front view, Figure 1C is its side view, Figure PJ2 is an explanatory diagram of the fitted state of the upper and lower block bodies in the fabric, Figure 3A is a plan view of another block body, and Figure 3B is its front view. Figure 3C is a side view, Figures 4A to 4C are explanatory diagrams sequentially explaining the method of constructing a retaining wall, Figure 5 is a cross-sectional view of the block body pre-equipped with prestressed steel, Figures 6 and t.
Fig. 147 is a diagram showing an example of construction of 41 walls, Fig. 8A is a plan view of a conventional block body, Fig. 8B is a front view thereof, and Fig. 9 is a sectional view showing a state of construction of a conventional retaining wall. . 1...Block body, 1v...Protrusion part, 1b...Through hole, 1c...Fitting convex part, 1d...Fitting concave part, l≧・
...Gripping projection, 2...Block body, 21...Protrusion part, 2b...Through hole, 3...Bottom board, 4...PC steel material, 5...Next direction, 5' ...PC steel material, 5m'...male thread, 5b'...female thread, 6...Pro7ri body. Figure 1A Figure 1B Figure 2 Figure 1C Figure 5 Figure 3C Figure 4A Figure 6 Figure 8A Figure 7 Figure 8B

Claims (1)

[Claims] 1. A block for a masonry retaining wall, characterized in that a protruding portion is formed on the back side of the block body, and a through hole for PC steel material is bored through the upper and lower surfaces of the protruding portion. . 2. The block for a masonry retaining wall according to claim 1, wherein the projecting portion extends rearward and a plurality of through holes are bored in parallel along the extending direction. 3. Forming a fitting convex part on the upper surface of the protruding part,
3. The block for a masonry retaining wall according to claim 1 or 2, wherein a fitting concave portion is formed on the lower surface to fit with a fitting convex portion of the lower block.