JPH03151415A - Coupling structure of steel sheet pile - Google Patents

Abstract

PURPOSE:To facilitate build-up of a steel sheet pile regardless of some bending or torsion of the steel sheet pile by providing a mold coupling having a partially notched circular section on the sheet pile side of a steel sheet pile main body, and disposing a male coupling loosely fitted and engaged therewith. CONSTITUTION:A steel sheet pile 3 is constructed so that plural partially notched circular mold couplings 2 are fixed on the connecting side of a steel sheet pile main body 1 having a pair of flanges 40 by welding. A male coupling 6 is formed by a band-like plate 4 and an engaging portion 5 having a circular section larger than the width of a slit of the mold coupling. Plural steel sheet piles 3 are disposed at small spaces, the band-like plate 4 of the male coupling 6 is disposed in a slit 41 of the mold coupling 2, and the engaging portion 5 is disposed in the mold coupling 2. Thus, even if some bending, warp, or torsion is caused in the steel sheet pile 3, build-up of the steel sheet pile 3 or the male coupling 6 can be facilitated.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a joint structure for steel sheet piles used for retaining walls, underground walls, etc.

[Conventional technology]

Conventionally, joint structures for steel sheet piles include: (1) As shown in FIGS. 16 to 18, a channel steel sheet pile 9 is provided with a single interlocking joint 8 on each side. Straight steel sheet pile 10.
A joint structure in which the interlocking joints 8 of the Z-shaped steel sheet pile 11 are interlocked with each other; (2) As shown in FIG. (3) As shown in FIG. 20, a joint structure in which steel sheet piles 14 are constructed by fixing interlocking joints 13, and the interlocking joints 13 in a plurality of steel sheet piles 14 are interlocked with each other, (3) as shown in FIG.
A steel meshing joint 13 with a partially cut-out circular cross section is fixed to one side in the diametrical direction of the steel pipe sheet pile body 12, and a steel meshing joint 15 with a T-shaped cross section is fixed to the other side. Sheet pile 16
, and a meshing joint 13 in a plurality of steel sheet piles 16.
(4) As shown in FIG. 21, a steel meshing joint 15 with a T-shaped cross section is fixed to one side in the diametrical direction of the steel pipe sheet pile body 12, and the other A pair of steel meshing joints 17 with an H-shaped cross section are fixed to the sides,
A joint structure is known in which a steel sheet pile 18 is constituted and meshing joints 15 in a plurality of steel sheet piles 18 are meshed between a pair of meshing joints 17.

(5) As shown in Fig. 22, the square steel pipe sheet pile body 1
Two steel joint members 20 each having an interlocking joint 8 are fixed to one side and the other side of the steel sheet pile 9.
(6) As shown in FIG. 22
A steel joint member 25 consisting of a band-shaped plate 23 and a female joint 24 with a partially cut-out circular cross section connected to both sides in the width direction is fixed to the outer surface of each flange in the female steel sheet pile 26.
The H-shaped steel sheet pile main body 22 is made of H-shaped steel, and on the outer surface of each flange, the strip plate 23 and a male joint 27 with an arcuate cross section are connected on both sides of the strip plate 23 in the width direction. A male steel sheet pile 29 is constructed by fixing the manufactured joint member 28, and a pair of female joints 24 in the female steel sheet pile 26,
A joint structure in which a pair of male joints 27 in the male steel sheet pile 29 are engaged, (7) as shown in FIG. A steel sheet pile 34 is constructed by forming a claw 31 and fitting and fixing a joint fitting 33 having claw engaging grooves 32 on both sides into the engaging claw 31 on one side in the width direction of each flange, In the claw engagement groove 32 of the joint fitting 33 in one steel sheet pile 34,
A joint structure in which the engaging claws 31 of the other steel sheet pile 34 are engaged, (8) a wide engaging joint having engaging type joints 8 on both sides of the square steel pipe sheet pile body 19 as shown in FIG. 25; The member 35 is fixed in an inclined state, and a narrow meshing joint member 36 having a meshing type joint 8 is fixed in a tilted state on both sides of the square steel pipe sheet pile main body 19. A joint structure in which the meshing type joints 8 of the meshing joint members 35 and 36 of the steel sheet pile 37 with inclined joint members are meshed with the meshing type joints 8 of the steel sheet pile 21 having the structure shown in FIG. 22, which constitute the sheet pile 37. , (9) As shown in FIG. 26, a split steel sheet pile 38 in the shape of a reverse split of the channel steel sheet pile is fixed in an inclined state to the groove bottom plate of the channel steel sheet pile 9 provided with the interlocking joint 8. A joint structure is also known in which a branched steel sheet pile 39 is constructed, and each meshing joint 8 of the branched steel sheet pile 39 is meshed with the meshing joint 8 of another channel steel sheet pile 9.

[Problem to be solved by the invention]

In the case of the joint structures (1) to (4) above, the interlocking joints of adjacent steel sheet piles are directly interlocked, so even if the steel sheet piles are slightly bent, warped, or twisted, When erecting steel sheet piles underground, the work of inserting and interlocking the interlocking joints becomes difficult, especially in the case of long steel sheet piles used for deep earth retaining.

In addition, in the case of the joint structure (5) to 8), two meshing joints or two female and male joints are provided on one side of the sheet pile body, making the insertion and meshing work described above difficult. become.

Furthermore, in the case of the joint structure (9), special processing is required to manufacture the branched steel sheet pile, and high precision is required, resulting in a significant increase in manufacturing cost.

This invention allows steel sheet piles to be easily installed even if the steel sheet piles have some bends, warps, twists, etc.
Another object of the present invention is to provide a joint structure for steel sheet piles that can use steel sheet piles that do not require high-precision machining.

[Means to solve the problem]

In order to achieve the above object, in the steel sheet pile joint structure of the present invention, a plurality of steel female joints 2 having a partially cut-out circular cross section and extending parallel to each other are fixed to the sheet pile connection side of the steel sheet pile body 1. The female joints 2 in the plurality of steel sheet piles 3 are arranged in parallel at intervals, and the engagement portions 5 are connected to the strip plate 4 on both sides in the width direction.
Both sides of the steel male joint 6 in the width direction are loosely inserted into the female joints 2 of the adjacent steel sheet piles 3.

〔Example〕

Next, the present invention will be explained in detail using illustrated examples.

FIG. 3 shows a steel sheet pile 3 used in the first embodiment of the present invention, in which each flange 40 of a steel sheet pile main body 1 having an H-shaped cross section has a pair of flanges 40 of equal width.
On both sides in the width direction, the circumferential center portions of steel female joints 2 each having a partially notched circular cross section and extending parallel to the longitudinal direction of the flange are fixed by welding.

FIG. 4 shows a steel male joint 6 used in an embodiment of the present invention, in which a slit 41 having a width larger than the slit 41 in the female joint 2 is formed on both sides of the steel strip plate 4 in the width direction. A steel retaining portion 5 having a circular cross section with a diameter is arranged so as to extend parallel to the longitudinal direction of the strip plate, and is integrally connected to the strip plate.

1 and 2 show a joint structure of a steel sheet pile according to a first embodiment of the present invention using the steel sheet pile 3 shown in FIG. 3 and the steel male joint 6 shown in FIG. 4. Therefore, a plurality of steel sheet piles 3 are arranged in series at small intervals,
The female joints 2 in the adjacent steel sheet piles 3 are arranged in parallel, and both sides of the steel male joint 6 in the width direction are loosely inserted across the female joints 2 in the adjacent steel sheet piles 3, and the steel The strip plate 4 of the male joint 6 is disposed within the slit 41 of the female joint 2, and the engaging portion 5 of the female steel joint 6 is disposed within the female joint 2.
Ru.

FIG. 6 shows a steel sheet pile 3 used in the second embodiment of the present invention, in which the width of one flange 40A of the steel sheet pile main body 1 is wider than the width of the other flange 40B. Other configurations are similar to those of the steel sheet pile 3 used in the first embodiment.

FIG. 5 shows a joint structure for steel sheet piles according to a second embodiment of the present invention, using the steel sheet pile 3 shown in FIG. 6 and the steel male joint 6 shown in FIG. 4. The second embodiment is suitable for constructing a cylindrical retaining wall or an underground wall.

Next, a first example of constructing an underground continuous wall using the steel sheet pile 3 shown in FIG. 3 and the steel male joint 6 shown in FIG. 4 will be described with reference to FIG.

First, a large number of overlapping vertical holes 43 are bored in the ground 42, and a curable material 44 such as soil, cement, milk, concrete, or mortar is accommodated in the vertical holes 43, and then the curable material After erecting one steel sheet pile 3 into the hardenable material 44 before the steel sheet pile 44 hardens, insert the steel male joints 6 into the pair of female joints 2 on one side of the steel sheet pile 3. Either one side of the steel sheet pile 3 is inserted, or one side of the steel male joint 6 is inserted into a pair of female joints 2 on one side of the steel sheet pile 3, and the steel sheet pile 3 with the steel male joint 6 inserted is inserted. , the uncured curable material 4
Build into 4.

Next, with the female joint 2 of another steel sheet pile 3 inserted into the other side of each of the steel male joints 6, that steel sheet pile 3 is built into the unhardened hardenable material 44. Then, the same steps are repeated.

According to this construction method, since the hardening material 44 is filled in the female joint 2, it is possible to construct a diaphragm wall with high water-stopping properties. If construction is to be carried out at the closed part of an underground continuous wall, the steel sheet pile 3 at the beginning of the construction has already been completed.
After removing the solid matter in the female joint 2 by washing, a steel male joint 6 is inserted between the cleaned female joint 2 and the female joint 2 in the steel sheet pile 3 at the end.

Figures 8 and 9 show steel sheet piles 3 having a box part.
A second underground continuous wall is constructed in the trench 45 excavated with muddy water using the steel male joint 6 with the rubber sealing material 7.
This shows an example. First, in the same manner as in the case of FIG. make up the wall,
Then inject any hardenable material on the outside of the steel sheet pile wall,
After forming the muddy water solidification layer 47, concrete 46 is filled inside the steel sheet pile wall.

If different types of hardenable materials are filled inside and outside the steel sheet pile wall,
The sealing material 7 prevents mixing of different types of curable materials.

FIG. 10 shows a modified example of the seal joint part that can be adopted for the underground continuous wall shown in FIG. One side of a rubber sealing material 7 is fixed to the outer surface of the rubber sealing material 7 with an adhesive or the like.

FIG. 11 shows an example in which the present invention is applied to an underground concrete continuous wall, in which a female joint 2 is fixed to one side of each flange of a steel sheet pile main body 1 having an H-shaped cross section, and 3 is constructed, and a pair of steel sheet piles 3 thus constructed are arranged in parallel at intervals, and two lattice reinforcing bars 48 are arranged across each flange of each steel sheet pile 3 and fixed by welding. , the plurality of reinforcing units made up of the pair of steel sheet piles 3 and the lattice reinforcing bars 48 are connected to the ground 42.
A male joint 6 is inserted across the female joints 2 of the steel sheet piles 3 in adjacent reinforcing units, and the groove 45 is filled with concrete 46.

Figures 12 to 15 show examples of the male joint 6 that can be used in the present invention, with Figure 12 having an H-shaped cross section, and Figure 13 having an inverted U-shaped cross section. be. In the case of Fig. 14, each flange of the H-beam is curved outward in an arc shape to form the engaging portion 5, and in the case of Fig. 15, each flange of the H-beam is bent inward. The retaining portion 5 is curved into an arc shape. These male joints 6 can be manufactured by any means such as rolling, hot pressing, pressing, and welding.

Furthermore, when the male joint 6 shown in FIG. 15 is used, the tensile strength of the joint can be increased.

〔Effect of the invention〕

Since this invention is configured as described above, it produces the effects described below.

A steel plate consisting of a plurality of female joints 2 with partially cut-out circular cross sections in adjacent steel sheet piles 3 arranged in parallel at intervals, and a strip plate 4 and engaging portions 5 connected on both sides of the strip plate in the width direction. Since the male joint 6 is loosely inserted into each female joint 2 in the adjacent steel sheet piles 3, the male joint 6 may rotate in the circumferential direction relative to the female joint 2, or the female joint 2 may rotate relative to the female joint 2. Therefore, the steel sheet pile 3 and the male joint 6, which are equipped with a plurality of female joints 2 on one side, have some bending,
Even if the steel sheet piles 3 and male joints 6 are warped or twisted, or the steel sheet piles 3 and male joints 6 are long, the steel sheet piles 3 and male joints 6 can be easily installed, and the steel sheet piles 3 and Even if the male joint 6 is not manufactured with high precision, it can be built without bearings, so the steel sheet pile 3 and the male joint 6 that can be manufactured at low cost can be used.

Furthermore, by attaching a sealing material 7 extending in the longitudinal direction to the engaging portion 5 of the male joint 6, it is possible to seal between each female joint 2 and the male joint 6 in the steel sheet pile 3. Therefore, the hardening material can be filled into the female joint 2 without leaking to the outside of the steel sheet pile wall, so it is possible to construct a steel sheet pile with excellent water-stopping properties.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a joint structure for steel sheet piles according to a first embodiment of the present invention, FIG. 2 is a plan view showing an enlarged part of FIG. 1, and FIG. FIG. 4 is a perspective view of a steel sheet pile used in the embodiment, and FIG. 4 is a perspective view showing a male joint used in the present invention. FIG. 5 is a plan view showing a joint structure for steel sheet piles according to a second embodiment of the invention, and FIG. 6 is a perspective view of the steel sheet pile used in the second embodiment of the invention. FIG. 7 is a cross-sectional plan view showing a first construction example of an underground continuous wall, FIG. 8 is a cross-sectional plan view showing a second construction example of an underground continuous wall, and FIG.
The figure is a cross-sectional plan view enlarging a part of FIG. 8, FIG. FIGS. 12 to 15 are perspective views showing examples of male joints. 16 to 26 are plan views showing various conventional joint structures for steel sheet piles. In the figure, l is the steel sheet pile main body, 2 is a steel female joint, 3 is a steel sheet pile, 4 is a strip plate, 5 is an engaging part, 6 is a steel male joint,
7 is a sealing material, 40 is a flange, 41 is a slit, 44
46 is a hardening material, 46 is concrete, 47 is a muddy water solidification layer, and 48 is a lattice-shaped reinforcing bar. Figure 3 Figure 4

Claims (2)

[Claims] (1) A plurality of steel female joints 2 with a partially notched circular cross section extending parallel to each other are fixed to the sheet pile connection side of the steel sheet pile main body 1 to constitute a steel sheet pile 3. The female joints 2 are arranged in parallel at intervals, and both sides of the steel male joint 6 in the width direction are made up of a strip plate 4 and engaging portions 5 connected on both sides of the belt plate 4 in the width direction. A joint structure of steel sheet piles loosely inserted into female joints 2 of adjacent steel sheet piles 3. (2) A joint structure for steel sheet piles according to claim 1, wherein a sealing material 7 extending in the longitudinal direction is attached to the engaging portion 5 of the male joint 6.