JPH0333782Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to flexible expandable and water-stopping PC sheet piles used for sheet pile walls installed on the ground in reclamation work, bank protection work, embankment construction work, etc.

[Prior art]

Conventionally, as flexible stretchable water-stopping sheet piles used for steel sheet pile walls, a pair of split steel sheet piles, each made by dividing a U-shaped steel sheet pile at the center of the web, are arranged parallel to each other with an interval between them. A structure has been proposed in which both sides of the extending rubber flexible water stop material in the width direction are brought into contact with each split sheet pile and are tightened and connected by bolts and band-shaped holding members.

However, the steel split type sheet piles in this flexible, expandable and water-stopping sheet pile have low rigidity and are therefore susceptible to bending and deformation, and are corroded, resulting in poor durability.

[Purpose of the invention, structure]

The purpose of this invention is to provide a flexible stretchable water-stopping PC sheet pile that can advantageously solve the above-mentioned problems, and the gist of this invention is to:
A recess 2 is provided on one side of the PC sheet pile body 1 in the sheet pile width direction, and extends in the sheet pile longitudinal direction on the other side of the PC sheet pile body 1 in the sheet pile width direction. A pair of movable joint PC sheet piles 4 and 5 are constructed by providing a joint part, and the recesses 2 in each movable joint part PC sheet piles 4 and 5 are arranged to face each other, and the flexible stretchable water stop material 6 is Each movable joint part is housed in a portion surrounded by the recess 2 of the PC sheet piles 4 and 5, and the recess 2
The upper ends of each movable joint part PC sheet piles 4 and 5 are temporarily joined by a steel upper connecting member 7 and bolts 8, and wedge-shaped shoes 9 are attached to the lower ends of each movable joint part PC sheet piles 4 and 5. is a flexible stretchable water-stopping PC sheet pile characterized by being temporarily engaged.

〔Example〕

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

Figures 1 to 5 show a flexible stretchable water-stopping PC sheet pile according to an embodiment of this invention,
On one side of the PC sheet pile body 1 in the sheet pile width direction,
A recess 2 recessed from the front surface of the sheet pile to the back side of the sheet pile is provided, a steel covered reinforcing plate 10 is integrally fixed, and a recess 2 extending in the longitudinal direction of the sheet pile is provided on the other side of the PC sheet pile main body 1 in the sheet pile width direction. The long arms of the joint fitting 3 having a hook-shaped cross section are embedded and fixed to form a pair of movable joint portions PC sheet piles 4 and 5,
The joint fitting 3 constitutes a joint portion.

A plurality of female screw members 11 made of cap nuts are provided on the front and back plates at the upper end of the covering reinforcing plate 10.
are fixed by welding and provided with a plurality of through-holes for bolt insertion, and a plurality of female screw members 12 made of cap nuts are fixed to the front plate and back plate at the lower end of the covering reinforcing plate 10. A large number of anchor bolts 13 each having a through-hole for bolt insertion and having an anchor head at the base end are arranged at intervals in the longitudinal direction of the sheet pile, and the intermediate portions of the anchor bolts 13 are connected to the covering reinforcing plate 10. The base end portions of the female screw members 11 and 12 and the anchor bolt 13 are embedded in the PC sheet pile main body 1, and are fixed by welding.

A rubber strip-shaped flexible stretchable waterproof material 6 having a plurality of arc-shaped bent portions 14 in the middle and mounting flanges 15 on both sides in the width direction is attached to each movable joint portion.
A holding member 16 made of a band-shaped steel plate is disposed across the bottom plate of the recess of the covered reinforcing plate 10 in the PC sheet piles 4 and 5, and is in contact with the surface of the mounting flange 15.
The mounting flange 15 is watertightly coupled to the recessed bottom plate by the tightening force of a nut 17 inserted through the holding member 16 and screwed onto the protrusion of the anchor bolt 13.

A steel upper connecting member 7 is provided over the front and back surfaces of the upper end of each movable joint part PC sheet piles 4 and 5.
is arranged, and the bolt 8 inserted through the upper connecting member 7 and the covered reinforcing plate 10 is screwed into the female thread member 11, and the upper end of each movable joint PC sheet pile 4, 5 is connected by the bolt 8 and the upper connecting member 7. are temporarily connected.

A pair of inclined plates 18 arranged in a V-shape by bending a steel plate and a mounting plate 19 extending upward from the upper end of each inclined plate 18 are formed, and each inclined plate 18 has reinforcing ribs. 20 to form a steel wedge-shaped shoe 9, each movable joint part PC
Wedge-shaped shoes 9 are fitted to the lower ends of the sheet piles 4 and 5, respectively, and bolts 21 inserted through the mounting plate 19 and the covering reinforcing plate 10 of the wedge-shaped shoes 9 and screwed into the female threaded member 12 connect each movable joint. Part PC sheet pile 4,5
A wedge-shaped shoe 9 is fixed to the lower end of each wedge-shaped shoe 9, and a lower connecting member 22 made of a band-shaped steel plate is arranged across the inclined plates 18 of the adjacent wedge-shaped shoes 9. 18 by welding, the connection between at least one inclined plate 18 and the lower connecting member 22 is as follows.
This is a low-strength temporary connection that will be destroyed when a hammer blow or strong pressing force is applied to only one movable joint of the PC sheet pile.

The flexible stretchable water-stopping PC sheet pile constructed as described above is interposed at an appropriate position on the PC sheet pile wall, and as shown in FIGS. 6 to 9, the aforementioned A joint fitting 23 having a hook-shaped cross section is fixed, and a joint groove 24 is provided on the other side in the width direction of the PC sheet pile 25.
The joint fitting 23 of the sheet pile 25 is one movable joint part.
It is engaged with the joint fitting 3 in the PC sheet pile 4,
In addition, a joint fitting 23 having a hook-shaped cross section as described above is fixed to one side in the width direction of the PC sheet pile 28, and the top of the joint protrusion 26 provided on the other side in the width direction of the PC sheet pile 28. A steel strip 30 having an anchor member is fixed to the strip 30, and a rubber sealing material 27 is fixed to the strip 30 with an adhesive.
The joint fitting 23 of the PC sheet pile 28 is the other movable joint part.
It is engaged with the joint fitting 3 in the PC sheet pile 5. In addition, the normal PC sheet pile 2 that makes up the PC sheet pile wall
9 has a joint protrusion 26 on one side in the width direction, a joint groove 24 on the other side in the width direction, and a steel strip plate 30 having an anchor member on the top of the joint protrusion 26. The rubber sealing material 27 is fixed to the strip plate 30 with adhesive, and the above-mentioned
The elastic sealing material 27 of the PC sheet pile 29 is joined to the joint groove 24 of the PC sheet pile 25, and the PC sheet pile 2
The joint groove 2 of the PC sheet pile 29 is inserted into the elastic sealing material 27 of 8.
4 are joined.

When driving the flexible stretchable water-stopping PC sheet pile,
Since the movable joint portions PC sheet piles 4 and 5 are temporarily connected, they are driven as one unit. After the flexible expandable water-stopping PC sheet piles are driven to a predetermined depth, the bolts 8 are unthreaded and the steel upper connecting member 7 is removed, and the upper ends of the movable joint portions of the PC sheet piles 4 and 5 are removed. The temporary connection is released, and then one of the movable joint PC sheet piles is hit with a hammer or strongly pushed down, and the temporary connection of each wedge-shaped shoe 9 is released.

When implementing this idea, one movable joint part
A joint groove is provided on the other side of the PC sheet pile 4 in the width direction (the part opposite to the recess 2), and the joint protrusion 26 and elastic sealing material 27 of the ordinary PC sheet pile 29 are fitted into the joint groove, and Other movable joint
The joint protrusion 26 and the elastic sealing material 27 are provided on the other side in the width direction of the PC sheet pile 5 (the part opposite to the recess 2), and these are connected to the normal PC sheet pile 29.
It may fit into the joint groove 24 in.

[Effect of idea]

According to this invention, a recess 2 recessed from the sheet pile surface to the back side of the sheet pile is provided on one side of the PC sheet pile main body 1 in the sheet pile width direction, and a recess 2 is provided on the other side of the PC sheet pile main body 1 in the sheet pile width direction. A pair of movable joint parts PC sheet piles 4 and 5 are provided with a joint part extending in the longitudinal direction of the sheet pile, and each movable joint part PC
The recesses 2 in the sheet piles 4 and 5 are arranged to face each other, and the flexible and stretchable water stop material 6 is connected to the recess 2 in each movable joint portion of the PC sheet piles 4 and 5. The flexible stretchable water-stopping PC sheet pile is obtained, and is more durable than the conventional flexible stretchable water-stopping sheet pile using steel split type sheet piles, and furthermore, the flexible stretchable waterstopping material 6 is movable. The joint parts PC sheet piles 4 and 5 are accommodated in the portion surrounded by the recess 2, and the upper ends of each movable joint part PC sheet piles 4 and 5 are temporarily connected by a steel upper connecting member 7 and a bolt 8, and each The wedge-shaped shoes 9 attached to the lower ends of the movable joint parts PC sheet piles 4 and 5 are temporarily connected, so when transporting or handling the flexible stretchable water-stopping material 6, the flexible and stretchable water-stopping material 6 is It will not be damaged or broken by colliding with other objects or being subjected to excessive tension, and after the flexible extensible water-stopping PC sheet pile is driven into the ground, simply unscrew the bolt 8 and the upper connecting member 7 By removing each movable joint part PC
The temporary connection between the upper ends of the sheet piles 4 and 5 can be easily and quickly released, and each wedge-shaped shoe 9 can be easily and quickly released by simply hitting one movable joint PC sheet pile with a hammer or pressing down strongly. Therefore, while ensuring water-stopping properties between the pair of movable joint parts PC sheet piles 4 and 5 by the flexible stretchable water stop material 6, the temporary connection between the pair of movable joint parts PC sheet piles 4 and 5 can be relatively moved in any direction depending on the earth pressure and uneven subsidence of the ground.

[Brief explanation of the drawing]

Figures 1 to 5 show a flexible stretchable water-stopping PC sheet pile according to an embodiment of this invention,
Figure 1 is a front view, Figure 2 is a side view, Figure 3 is a vertical side view, Figure 4 is a partially cutaway enlarged plan view, and Figure 5 is an enlarged cross-sectional plan view of the flexible elastic water-stop joint. be.
FIG. 6 is a cross-sectional plan view showing a part of the PC sheet pile wall with the flexible stretchable water-stopping PC sheet pile interposed therebetween, FIG. 7 is an enlarged cross-sectional plan view showing a PC sheet pile joint using a joint fitting, and FIG. FIG. 9 is an enlarged cross-sectional plan view showing a PC sheet pile joint made up of a joint groove, a joint protrusion, and a hollow elastic sealing material, and FIG. 9 is a front view showing a part of a PC sheet pile wall with the flexible stretchable water-stopping PC sheet pile interposed therein. It is. In the figure, 1 is the PC sheet pile body, 2 is the recess, and 3
is the joint fitting, 4 and 5 are the movable joint part PC sheet pile,
6 is a flexible elastic water stop material, 7 is a steel upper connecting member,
8 is a bolt, 9 is a wedge-shaped shoe, 10 is a steel covered reinforcing plate, 13 is an anchor bolt, 14 is an arcuate bent portion, 15 is a mounting flange, 16 is a holding member, 17
21 is a nut, 21 is a bolt, and 22 is a lower connecting member.

Claims (1)

[Scope of utility model registration request] A recess 2 is provided on one side of the PC sheet pile body 1 in the sheet pile width direction, and extends in the sheet pile longitudinal direction on the other side of the PC sheet pile body 1 in the sheet pile width direction. A joint part is provided, and a pair of movable joint parts PC sheet piles 4, 5
are arranged so that the recesses 2 in each movable joint part PC sheet piles 4 and 5 face each other, and the flexible stretchable water stop material 6 is arranged in the recess part 2 of each movable joint part PC sheet piles 4 and 5.
The upper ends of each movable joint part PC sheet piles 4 and 5 are temporarily joined by a steel upper connecting member 7 and bolt 8, and each movable joint part PC sheet pile A flexible stretchable water-stopping PC sheet pile characterized in that the wedge-shaped shoes 9 attached to the lower ends of 4 and 5 are temporarily connected.