JP2000017630A - Fixing method of concrete sheet pile coping stone block and its structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the concrete sheet pile coping stone block capable of easily adjusting the fixing position of a coping stone block in response to the slippage of mutual height, before and behind, right and left directions of sheet piles produced at the time of placing of the concrete sheet pile. SOLUTION: The before and behind side wall face is sandwiched by a pair of clips 21 on the upper part of a concrete sheet pile 9 to set a sandwiching adjusting tool 18, and a height adjusting nut screwed on a vertical through bolt 20 of the sandwiching adjusting tool is rotated to adjust the set height of a coping stone block 10. The coping stone block is fitted on the upper part of the concrete sheet pile, the through bolt is inserted in the adjusting through hole 17 of the height adjusting tool 16 provided on the coping stone block, and the coping stone block is mounted on the upper part of the concrete sheet pile by tightening the fixing nut screwed on the through bolt.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for fixing a headstone block on top of a concrete sheet pile used in earth retaining works, water leakage prevention works, seawall works and the like, and a fixing structure therefor.

[0002]

2. Description of the Related Art As shown in FIG. 11, a concrete sheet pile 1 has a rectangular flat plate structure, a lower end 1a of which is cut off obliquely to make it easy to be cast. A convex portion 1b is formed along the direction, and a concave portion 1c fitted with the convex portion 1b is formed on the other side end surface. And in the revetment, etc., the recessed portion 1c of the driven sheet pile 1
The adjacent sheet piles 1 and 1 are successively connected by being driven while being fitted with the projection 1b of the other sheet pile 1 adjacent thereto, thereby forming a wall having no gap between the adjacent sheet piles 1 and 1.

However, the sheet pile 1 made of concrete has a flat plate shape unlike a steel sheet pile having a cross section of Ω. When constructing a wall with steel sheet pile, every other piece is driven with its front and rear faces reversed. Moreover, in this driving,
Since the nails provided at both ends of the steel sheet pile are engaged with each other, the effect of suppressing the displacement of the steel sheet piles can be obtained. However, in the case of the concrete sheet pile 1, the projections 1b are mutually formed. And the recess 1c are connected only by fitting, so that the effect of suppressing displacement such as steel sheet pile cannot be expected.

[0004] Therefore, in the wall made of the concrete sheet pile 1, the front, rear, left and right deviations are larger than those of the steel sheet pile wall.
Since the height of the upper part exposed on the ground surface of the concrete will be uneven and damage the landscape, etc. I have.

FIG. 12 shows a conventional example disclosed in Japanese Patent Application Laid-Open No. 3-286012, in which one end of a groove-shaped fixing bracket 3 is fixed to one side of an upper part of a concrete sheet pile 2 by bolts 4 to be horizontal. One end of a chevron-shaped support member 5 is fixed to the upper end of the other side surface by a bolt 6 in an upright state. Then, when the cap member 7 having a U-shaped cross section is mounted so as to be fitted on the upper part of the sheet pile 2 from the opening thereof, the top wall portion of the cap member 7 is fixed at the other end of the support fitting 5 in an upright state. It is supported at the height, and the side wall is fixed to the upper part of the concrete sheet pile 2 by fixing the bolt 8 to the other end of the horizontal fixing bracket 3.

[0006]

However, Japanese Patent Application Laid-Open No.
In the conventional example disclosed in Japanese Unexamined Patent Application Publication No. 286012, the supporting metal member 5 only supports the head stone member 7 and the fixing metal member 3 has a structure that only fixes the head stone member 7, so that the head stone member 7 is adjacent. There has been a problem that the height of the upper part of the concrete sheet pile 2 and the adjustment of the front, rear, left and right movements cannot be performed at all.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional problems, and has been made in order to adjust the height and adjust the height, front, rear, left, and right of a headstone block mounted on a concrete sheet pile. The position can be adjusted by adjusting the position of the heave stone block easily according to the height of the sheet piles and the front, rear, left and right misalignment that occur when placing the concrete sheet pile during construction of the heave stone block. The purpose of the present invention is to provide a device that can be adjusted, and the gist of the invention is to provide a clamping adjuster by clamping the front and rear side walls with a pair of clips on the upper part of a concrete sheet pile. In addition, a height adjusting nut screwed into an upright through bolt of the pinch adjusting tool is rotated to adjust the installation height of the hessac block, and the hessac block is placed on the upper part of the concrete sheet pile. By inserting the through bolt into the through hole for adjustment of the height adjustment tool provided on this headstone block after being fitted and tightening the fixing nut screwed into the through bolt, the upper part of the concrete sheet pile A fixing method and a fixing structure of a headdress block for concrete sheet pile characterized by mounting a headdress block.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in FIGS.
Reference numeral 9 denotes a concrete sheet pile, and reference numeral 10 denotes a cap stone block mounted on the upper part thereof. This cap stone block 10 is shown in FIG.
As shown in the figure, the upper surface is formed of a left and right side walls 11 and 11 and a ceiling wall 12 and has a gate-shaped shape having a predetermined length, and a rectangular opening 13 is provided at the center of the ceiling wall 12. In addition, in the longitudinal direction of the opening 13, a concave portion 15 is formed at each of left and right ends via a beam portion 14. 13a is an opening 1 formed in the ceiling wall 12.
Reference numeral 15a denotes an inner side face facing in the longitudinal direction of 3;

Reference numeral 16 denotes a height adjusting device made of a flat plate, which protrudes almost horizontally from the inner side surface 15a of the hessian concrete block 10, and through which a through bolt 20 described later is inserted. An adjustment through hole 17 is formed. The adjusting hole 17 is a long hole that is aligned with a direction perpendicular to the longitudinal direction of the head stone block 10, and the length of the minor diameter side thereof is formed larger than the outer diameter of the through bolt 20. Therefore, the through bolt 20 is configured to be movable in the front, rear, left and right directions in the adjustment through hole 17.

Reference numeral 18 denotes a clamping adjustment tool, which is a rectangular substrate 19.
And a pair of clips 21 and 21 hanging down from both ends of the board 19 in the longitudinal direction (the thickness direction of the concrete sheet pile 9). The through bolt 20 is located at a position closer to one end in the longitudinal direction of the substrate 19, and its head 20 a is fixed to the lower surface side of the substrate 19 by welding so as to stand upright from the upper surface of the substrate 21. The through-bolt 20 is provided with a nut 22 for height adjustment.

The clip 21 is formed by bending a single reinforcing bar with two bent portions 21a to form a flat ring shape, and welding a central portion thereof to the lower surface of the substrate 19. Then, the portion protruding from both ends of the substrate 19 is bent downward by 90 degrees from the base 21b, and the portion between the bent portion 21a and the base 21b is bent inward. It has a structure in which a character-shaped bent portion 21c which is to be bent and bent in a character shape is formed. In the drawings, reference numeral 23 denotes a fixing nut, and reference numeral 24 denotes a washer.

Therefore, the concrete sheet pile (wall) 9
In order to mount the head block 10 on the upper part of the concrete sheet pile 9, the clip adjusting member 18 is clamped between the front and rear side walls of the upper part of the concrete sheet pile 9 by the clips 21 and 21 before the mounting. Here, the clips 21 and 21 come into contact (point contact or line contact) between the side wall surface of the concrete sheet pile 9 and the portion of the U-shaped bent portion 21c and are sandwiched.

Therefore, the elastic clamping force of the clips 21 and 21 strongly acts on both side walls of the concrete sheet pile 9, and the clamping adjuster 18 applies a strong elastic clamping force to the concrete sheet pile 9. Fixed at. Thereafter, the height adjustment nut 22 screwed to the through bolt 20 is vertically moved and finely adjusted using a water thread or the like to determine the height position of the hessian block 10 when the block is installed. deep.

Next, the cap block 10 is lifted by a crane or the like, and its release portion 10a is lowered so as to be fitted on the upper portion of the concrete sheet pile 9, and at the same time, the clamping adjuster 1 is moved.
When a through bolt 20 that stands upright from 8 is inserted through a washer 24 into an adjustment through hole 17 of the height adjustment tool 16 that projects horizontally from the rear side surface 15a of the concave portion 15 of the cap stone block 10, {circle around (1)}. A fixing nut 23 is fixed to a through bolt 20 protruding from the adjusting through hole 17 via a washer 24.
Screw loosely.

Then, the positional relationship between the through bolt 20 and the height adjusting tool 16 is adjusted by moving it back and forth and left and right in the adjusting through hole 17.
Is fixed via the washer 24, thereby fixing the headstone block 10 on the upper part of the concrete sheet pile 9. Further, the connection between the adjacent head stone blocks 10, 10 is performed by fitting a convex ridge 10b formed on one end side surface with a concave ridge portion 10c formed on the other end surface, and, for example, on the water surface side. As shown in FIG. 4, a packing material 25 is provided in a gap between the inwardly protruding portion 10 d of the headdress block 10 and the concrete sheet pile 9 to form a watertight structure. After passing through the above-mentioned various steps, the cast-in-place concrete is poured from the opening 13 of the cap stone block 10 to complete the construction.

FIGS. 7 to 10 show another embodiment.
The headstone block 10 is composed of divided headstone blocks 10A and 10B which are divided into two along the center in the width direction, and other components are substantially the same as those of the above-described embodiment. However, the height adjustment tool 16 is fixed to the inner side surface 15a of the concave portion 15 of one of the divided headstone blocks 10A or 10B. In the drawing, reference numeral 26 denotes a connecting plate, and 27 denotes a bolt.

The construction method using the divided headstone blocks 10A and 10B is similar to that of the above-described embodiment.
8, the upper portion of the concrete sheet pile 9 is clamped by the clip 21, the through bolt 20, the height adjusting nut 22, and the washer 24.
The assembling adjustment tool 18 is mounted on the upper part of the concrete sheet pile 9 while assembling.

Thereafter, the pedestal 28 is placed horizontally on the ground G side of the concrete sheet pile 9 using a water thread or the like, and the lower end of one of the divided hessstone blocks 10A is placed on the pedestal 28. . Then, the other divided headdress block 10B is installed on the other wall surface side of the concrete sheet pile 9, and at the same time, the through bolt 20 standing upright from the clamping adjuster 18 is inserted into the inner side surface 15a of the recess 15 of the divided headdress block 10B.
When inserted through the washer 24 into the through hole 17 for adjustment of the height adjustment tool 16 protruding horizontally from the hole, it is fixed via the washer 24 to the through bolt 20 projecting from the through hole 17 for adjustment. The nut 23 is loosely screwed.

Next, the two divided heseki blocks 10A, 10
A connecting plate 26 is applied between the inner surfaces 13a, 13a in the longitudinal direction of the opening 13 formed by the concave portion in the middle of B, and both ends of the connecting plate 26 are fixed to the divided headdress blocks 10A, 10B with bolts 27, respectively. By doing so, the divided headstone blocks 10A and 10B are integrally formed. Subsequent work steps are the same as those in the above-described embodiment. However, the use of the divided head blocks 10A and 10B reduces the total weight and facilitates construction.

[0020]

Since the present invention has the above configuration,
Fine adjustment of the headstone block installed on the upper part of the concrete sheet pile can be easily performed in accordance with the height of the sheet piles and the displacement in the front, rear, left and right directions when the concrete sheet piles are driven. Therefore, the work efficiency is greatly improved, and at the same time, there are various effects such that the heseki block is firmly fixed to the concrete sheet pile and the structural strength is large.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of a fixing structure of a hessian block according to the present invention.

FIG. 2 is a plan view showing a fixed state of the cap stone block.

FIG. 3 is a sectional view taken along line II-II of FIG. 2;

FIG. 4 is a sectional view taken along line III-III of FIG. 2;

FIG. 5 is a perspective view of a cap stone block.

FIG. 6 is a sectional view taken along line II-II of FIG.

FIG. 7 is a perspective view showing another embodiment of a hematite block.

FIG. 8 is a plan view showing a fixed state of the cap stone block.

FIG. 9 is a sectional view taken along line II-II of FIG.

FIG. 10 is a sectional view taken along line III-III in FIG. 8;

FIG. 11 is a perspective view of a reinforced concrete sheet pile.

FIG. 12 is a side view showing a main part of a conventional fixing structure for a head stone block.

[Explanation of symbols]

 Reference Signs List 9 concrete sheet pile 10 headstone block 11 side wall 12 ceiling wall 13 opening 14 beam 15 recess 15a back side 16 height adjustment tool 17 adjustment through hole 18 clamping adjustment tool 19 board 20 through bolt 21 clip 21c square Folded part 22 Height adjusting nut 23 Fixing nut 25 Packing

Continued on the front page (72) Inventor Takayasu Abe 6-7 Uehonmachi, Sakata City, Yamagata Prefecture Inside Maeda Seisakusho Co., Ltd. (72) Inventor Takashi Takahashi 1-12-15 Maeda, Nishikicho, Aoba-ku, Sendai, Miyagi Prefecture Sendai Co., Ltd. Sendai branch F-term (reference) 2D018 BA15 2D049 BA16 DA03 DB06

Claims (5)

[Claims] When a clamping adjuster is installed by clamping the front and rear side walls with a pair of clips on the upper part of a concrete sheet pile, the screw is screwed into an upright through bolt of the clamp adjuster. The height adjustment nut is rotated to adjust the installation height of the coping stone block, and the coping stone block is fitted on the upper part of the concrete sheet pile, and the adjusting tool for adjusting the height or the like provided on the coping stone block is adjusted. A method of fixing a headstone block for a concrete sheet pile, comprising: mounting a headstone block on the upper part of the concrete sheet pile by inserting the through bolt into the hole and tightening a fixing nut screwed into the through bolt. . 2. A gate-shaped cap stone block consisting of both side walls and a ceiling wall mounted on the upper part of a concrete sheet pile, and a height projecting from a back wall surface of a concave portion formed in a ceiling wall at both ends of the head stone block. Nipping adjustment including an adjusting tool, a pair of front and rear clamping clips for clamping front and rear side walls of the upper part of the concrete sheet pile hanging from both ends of the board, and a through bolt standing upright from the board, respectively. With the ingredients
The fixing bolt, which is screwed to the upper surface of the height adjustment tool, is inserted through the adjustment hole formed in the height adjustment tool via the height adjustment nut screwed to the through bolt. A structure for fixing a heave stone block for concrete sheet pile, wherein the structure is fixed by tightening a nut. 3. The adjusting through-hole formed in the height adjusting device,
3. The fixing structure for a hemp stone block for a concrete sheet pile according to claim 2, wherein the elongated hole is configured to have an elongated hole that is larger than the diameter of the through-bolt and coincides with a direction perpendicular to the longitudinal direction of the headdress stone block. 4. The pair of front and rear clip clips are bent in a U-shape so as to make line contact or point contact with the front and rear side wall surfaces of the upper part of the concrete sheet pile. 3. The fixing structure of the hemp stone block for concrete sheet pile according to 3. 5. A head stone block is constituted by two divided head stone blocks divided along the center in the width direction. In addition, when assembling the two divided head stone blocks, a concave portion is formed in a ceiling wall at both ends thereof. 5. The fixing structure for a heave stone block for a concrete sheet pile according to claim 2, 3 or 4, wherein: