JP3714439B2 - Concrete sheet pile construction jig - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a concrete sheet pile construction jig that can be driven to the ground surface or below the ground surface, which could not be done conventionally.
[0002]
[Prior art and problems to be solved by the invention]
Conventionally, in the construction of a concrete sheet pile, since the upper part (head) of the sheet pile is grasped by a chuck and driven into the soil, the head of the sheet pile has come out above the ground surface.
[0003]
FIG. 4A is a front view of an enforcement method in which the head of a concrete sheet pile is gripped by a chuck and driven by a vibro hammer connected to a wire by a conventional method, and FIG. 4B is a side view. As you can see in this example, the gripping cost of the chuck always remains on the ground.
[0004]
FIG. 5 shows a concrete sheet pile driven by a hydraulically operated concrete piler according to a conventional method. Grab the side of the concrete sheet pile with a chuck, drive it to a certain depth with hydraulic pressure, and repeat the driving by changing the gripping position upward with a chuck insect type. As is clear from this example, the head of the concrete sheet pile remains on the ground surface.
[0005]
Thus, in the conventional method, the top of the sheet pile cannot be driven to the ground surface or below the ground surface. Therefore, if the top of the sheet pile must be the same height as the ground surface or lower (deeper) than the ground surface, the heads of the sheet piles should be beaten or the ground of the part where the sheet piles will be driven in advance, It was necessary to backfill only the part dug down after construction.
[0006]
FIG. 6A is a view in which a concrete sheet pile is dug down in advance to a predetermined depth, and FIG. 6B is a side view thereof.
[0007]
The present invention provides a jig capable of driving the head of a sheet pile, which has not been possible before, to the ground surface or lower than the ground surface.
[0008]
[Means for Solving the Problems]
It is a concrete sheet pile construction jig, an insert in which a female thread is cut is embedded in the head of the concrete sheet pile, a grip member is stacked on the concrete sheet pile, a bolt is inserted into a bolt hole provided in the grip member, and the concrete A concrete sheet pile construction jig characterized by being screwed and fixed to an insert embedded in a sheet pile.
[0009]
Next, the operation will be described.
[0010]
Grab the gripping member part attached to the head of the concrete sheet pile with a bolt, grip it with the chuck of the construction machine, drive the sheet pile, then remove the gripping member, so that the top of the sheet pile is the same height as the ground surface, or It can be lower than the ground surface. When the existing sheet pile is used as a reaction force as in the press-fit method, the press-fit method can be dealt with by leaving the gripping members attached to several sheet piles used as the reaction force.
[0011]
Moreover, even if the thickness of the concrete sheet pile changes, the grip member can also be used by matching the position of the insert embedded in the concrete sheet pile. Further, when the plate thickness is large, in the conventional hydraulically operated concrete piler, the stroke of the chuck for gripping the sheet pile needs to be greater than the concrete thickness of the sheet pile, and therefore the concrete pile tends to be large. However, if the jig of the present invention is used, the gripping member that is thinner than the thickness of the concrete sheet pile is stopped, so that the concrete piler can be miniaturized.
[0012]
In addition, since the part gripped with the chuck | zipper of a construction machine will hold | grip a grip member instead of the part of a concrete sheet pile directly, there is no possibility of losing the head part of a concrete sheet pile.
[0013]
Conventionally, the grip members are connected by welding a plate embedded in the head of a concrete sheet pile, but it can be connected by bolting using another plate, etc., so there is little damage to the jig. Easy to put on and take off.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
A concrete sheet pile construction jig according to the present invention will be described below with reference to the drawings.
[0015]
Fig.1 (a) is the whole figure which piled up the holding member 2 on the head of the concrete sheet pile 1 of this invention. Reference numeral 3 denotes a bolt hole formed in the gripping member 2. The gripping member does not necessarily have the same cross section as the concrete sheet pile. (B) is the detail which attached the grip member 2 to the concrete sheet pile. (C) is a top view of (b).
[0016]
Reference numeral 5 denotes an insert embedded in the head of the concrete sheet pile, in which a female screw is cut. Reference numeral 4 denotes a bolt that is screwed into the insert 5 and attaches the gripping member 2 to the concrete sheet pile. FIG. 2A is a front view in which the gripping member 2 is gripped by the chuck 7 and a concrete sheet pile is driven by the vibro hammer 6. The gripping member 2 of the left concrete sheet pile 1 has already been removed. (B) is the side view.
[0017]
FIG. 3 is a view showing a state in which the side surface of the gripping member 2 is gripped by a hydraulically operated concrete pillar 8 and driven for a certain stroke, and the position for gripping the gripping member 2 is raised and driven again. . The concrete pillar 8 uses a hydraulic cylinder, and the reaction force at the time of driving is obtained by gripping the gripping members 2 left on the adjacent concrete sheet piles 1. The gripping member 2 that does not keep the reaction force is removed and diverted to others.
[0018]
【The invention's effect】
The present invention is configured as described above and has the following effects.
[0019]
Conventionally, when the top of the sheet pile is the same height as the ground surface or lower than the ground surface,
(1) Whether the sheet pile is rolled up to a predetermined height after construction,
(2) Dig the place where the sheet pile will be constructed in advance, and backfill after construction.
[0020]
It was necessary. In the case of {circle around (1)}, not only the length of the sheet pile is required to be longer than a predetermined length, but also the cost and construction period for dropping the sheet pile are required. In the case of (2), the construction site is dug down before construction, and backfilling is required after construction. This also requires an extra cost and construction period, as in (1).
[0021]
If the construction jig of the concrete sheet pile of this invention is used, a sheet pile can be embedded in the same height as a ground surface or a position lower than the ground surface only by removing a holding member after construction. The removed gripping member and bolt can be used for driving the next sheet pile, and a simple and economical sheet pile enforcement method can be realized.
[0022]
Moreover, even if the thickness of the concrete sheet pile changes, the grip member can also be used by matching the position of the insert embedded in the concrete sheet pile. Further, when the plate thickness is large, in the conventional hydraulically operated concrete piler, the stroke of the chuck for gripping the sheet pile needs to be greater than the concrete thickness of the sheet pile, and therefore the concrete pile tends to be large. However, if the jig of the present invention is used, the gripping member that is thinner than the thickness of the concrete sheet pile is stopped, so that the concrete piler can be miniaturized.
[0023]
In addition, since the part gripped with the chuck | zipper of a construction machine will hold | grip a grip member instead of the part of a concrete sheet pile directly, there is no possibility of losing the head part of a concrete sheet pile.
[0024]
Conventionally, the grip members are connected by welding a plate embedded in the head of a concrete sheet pile, but it can be connected by bolting using another plate, etc., so there is little damage to the jig. Easy to put on and take off.
[Brief description of the drawings]
FIG. 1 (a) is an overall view in which a gripping member 2 is superimposed on the head of a concrete sheet pile 1 of the present invention. (B) is the detail which attached the grip member 2 to the concrete sheet pile. (C) is a top view of (b).
FIG. 2 (a) is a front view in which a gripping member 2 is gripped by a chuck 7 and a concrete sheet pile is driven by a vibro hammer 6. FIG. (B) is the side view.
FIG. 3 is a view showing a state in which the side surface of the gripping member 2 is gripped by the concrete pillar 8 and driven by a certain stroke, and the position where the gripping member 2 is gripped is raised and driven again.
4A is a front view of an enforcement method in which the head of a concrete sheet pile is gripped by a chuck and driven by a vibro hammer connected to a wire by a conventional method, and FIG. 4B is a side view.
FIG. 5 is a diagram showing a concrete sheet pile driven by a concrete piler according to a conventional method.
FIG. 6A is a view in which a concrete sheet pile is dug down in advance to a predetermined depth, and FIG. 6B is a side view thereof.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Concrete sheet pile 2 ... Grasp member 3 ... Bolt hole 4 ... Bolt 5 ... Insert 6 ... Vibro hammer 7 ... Chuck 8 ... Concrete pile

Claims (1)

It is a concrete sheet pile construction jig, an insert in which an internal thread is cut is embedded in the head of the concrete sheet pile, a grip member is stacked on the concrete sheet pile, a bolt is inserted into a bolt hole provided in the grip member, and the concrete A concrete sheet pile construction jig characterized by being screwed and fixed to an insert embedded in a sheet pile.

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