JPS5826111A - U-shaped steel sheet pile - Google Patents

Abstract

PURPOSE:To make the construction work of steel sheet piles safer by preventing the rotation encountered when driving the sheet piles by a method in which an U-shaped steel sheet pile having auxiliary couplers is connected along the joined portion of the web and flange of a steel sheet pile body of an U-shaped cross section to form a linear wall. CONSTITUTION:An U-shaped steel sheet pile 192 adjacent to a forward U-shaped steel sheet pile 101 is inversed in relation to the center line L-L of execution, and then the coupling portions of both are connected and driven. Then, the U- shaped steel sheet pile 102 is connected with an U-shaped steel sheet pile 103 through coupling portions 142 and 143 and they are driven. Also, a thick plate 26 is fitted into between the auxiliary coupler 151 and 153 of the U-shaped steel sheet piles 101 and 103 they are driven.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a υ-shaped steel sheet pile that can be constructed in a new combination with U-shaped copper arrows 1 [K, 41].

A conventional general U-shaped steel sheet pile has flanges formed on both side edges of the web or a shaped cross-section, and a hand portion is formed at the tip of the flange.

The form of this kind of U-shaped steel sheet pile after driving is the first
As shown in the figure, the adjacent U-shaped steel sheet piles 1 and 2 are inverted with respect to the construction center line L-I, and the child connection s2 is connected to each of the adjacent sheet piles 1 and IB. The workpiece center 11 is located at the center between the web 3 and BB [located on L-L].

In the above-mentioned conventional U-shaped steel sheet pile, the adjacent sheet pile l
Since M and IB are arranged symmetrically across the construction center line,
The shape after construction! is uneven. For this reason, when used on the quay of a river or the like, water stagnates and the flow does not flow smoothly, making it inferior to straight steel sheet piles, which have a straight appearance. When it comes to construction, the second
As shown in the figure, a pair of conductive materials 4 are used to form a guide during driving, but the interval between these conductive materials 4 must be at least twice the web height j of 1 mm of U-shaped steel sheet piles. be. Therefore, during driving, the following sheet pile IB is likely to rotate relative to the preceding sheet pile IAK, and there are problems in construction, such as making it difficult to install the sheet pile straight.

The present invention has focused on the above-mentioned problems, and an object of the present invention is to provide a U-shaped steel sheet pile that has a linear wall shape after construction and can be stably and reliably constructed.

In order to achieve the above object, the υ-shaped steel sheet pile according to the present example has a web and a flange with a υ-shaped cross section, and a joint part is provided at the tip of the flange.
By forming an auxiliary joint part at the joint part Kf6 with the lunge, and by stretching a steel plate between the auxiliary joints, the wall surface form after construction will be linear, and by combining it with the steel plate in advance, it will be possible to This makes it possible to prevent sheet pile rotation.

Embodiments of the present invention will be described in detail below with reference to the drawings.

An end-to-end view of the U-shaped steel sheet pile according to this example is shown in FIG. As shown in this figure, the U-shaped steel sheet pile 1° has a web 11
and a pair of 7 langes 1 provided on both side edges of the web 11.
It has a steel sheet pile main body 13 formed by forming 2 and 2 into a U-shaped cross section. This steel sheet pile main body 13 has a joint part 14 bent and formed at the tip of the seven flange 12, and this joint part 14
It is possible to connect similar steel sheet pile bodies 13 to each other,
This serves the same function as the conventional 17-section steel sheet pile (Figs. 1 and 2).

In such a steel sheet pile main body 13, an auxiliary joint part 15 different from the joint part 14 is formed at the joint portion between the web 11 and the seven flange 12. The auxiliary joint Is is a concave groove 118 formed at the outer edge of the joint between the web 11 and the flange 12, with its opening directed outward in the width direction of the web 11. Further, the opening width of this auxiliary joint portion 15 is made approximately equal to the thickness of the web 11.

The TTm steel sheet pile IO configured in this manner is formed through a piezoelectric process, and in particular, the auxiliary joint portion 15 is rolled formed in the same manner as the method for forming rigid claws of Z-shaped steel sheet piles and straight steel sheet piles.

Specifically, the production of the U-shaped steel sheet pile IO is performed using piezoelectric equipment shown in Figure tJE4. This equipment is constructed by disposing a heating furnace 16 on the upstream side in the flow direction of the material, and sequentially installing a roughing press machine 17, an intermediate piezoelectric machine 18, a finishing press machine 111, and a hot saw 20.

First, a rough steel piece 21Fi with a rectangular or H-shaped cross section, a heating furnace 16
It is heated to 1250 to 1300°C and soaked.

Then, the roughening machine 17 reduces the area and changes the cross-sectional shape. Out of the hole shapes shown in the piezoelectric process in FIG. By changing the upper and lower roll gaps of M~C and performing reciprocating piezoelectricity 2 to 5 times on each hole cover M~C, piezoelectric material 2! Form in a trench. Next, this piezoelectric material 22 is sent to the intermediate piezoelectric machine 18, and holes [D%l, F, GK, each 1 to 2
Using reciprocating piezoelectricity, form the web length part 11 and the seven-flange parallel part 12B with an H-shaped cross section, and at the same time form the binding part 14 and the auxiliary joint 15 at the tip of the flange-equivalent part l. The desired protrusions 23 are formed up to the piezoelectric material 24 formed on the top surface of both ends of the web length section 11m. Finally, in the first finishing press 19, the round holes 1IH, 2, and J are turned by the roll and pressed through the round holes 1IH, 2, and J, thereby bending and forming the arm part 14 to form the conventional joint part. 14
, and also by bending and forming the protrusion 23 to form an auxiliary thin 1
5. The U-shaped steel sheet pile IO obtained in this way is cut into a predetermined length with a hot saw 20, cooled on a cooling bed, and then subjected to kneeling such as straightening to become a product.

In addition, in the step of forming the protrusion 23 that will become the auxiliary joint part Is, the hole shape mold in the previous process is adjusted in advance so that the protrusion 23 in the final hole shape G of the intermediate rolling mill 18 has a specified shape. 23mm ~ 23'F
The height of
On the opposite side of F, there is a bulge 25 that secures the amount of reduction for pushing.

The U-shaped steel sheet pile 1O rolled and formed in this way is constructed as follows. That is, as shown in Fig. 36, the U-shaped steel sheet piles 102 adjacent to the preceding U-shaped steel sheet piles 101 are inverted relative to the construction center line, similar to the conventional construction state. The joint parts 141 and 142 are connected and driven. Furthermore, U adjacent to this U-shaped steel sheet pile 101
10 m of shaped steel sheet piles are driven in the same arrangement as the preceding steel sheet pile 101.

In this way, in the U-shaped steel sheet piles 101-103 that are alternately reversed and driven, each auxiliary joint portion 151, 153 of the U-shaped steel sheet pile 103 that is one sheet apart from the preceding U-shaped steel sheet pile 101 is
The reeds are on the same straight line, and the υ-shaped steel sheet pile 101.
103 Unibuto 11. Steel plate 2 with approximately the same thickness as 113.
6 can be installed in both auxiliary joints with a thickness of 151.153. By continuously joining this steel plate 26 and the U-shaped steel sheet piles 101, 103, it becomes possible to make the wall surface after construction a straight line parallel to the construction center line LL.

For this reason, when such a U-shaped steel sheet pile 1o is used for a river quay, etc., it is possible to create a wall that can generate a smooth flow without stagnation.

Further, although the steel [26 and the U-shaped steel sheet piles 1G1 to 103 may be driven separately, it is optimal to assemble several steel sheet piles together with the steel sheet 26 into a single integrated body in advance as a combination sheet pile. In this case, as shown in FIG. 6, it is desirable to weld and secure the auxiliary joint part 1,153 and the steel plate 26 inserted therein at the cut edge part 2).

This combination sheet pile is located at a position K away from the construction center line L-L.
Since the vfr surface is added, cross-sectional performance is improved.

Therefore, there is no need to perform forming to thicken the web and thin the joint, which was conventionally done as a method to increase the section modulus, resulting in the disadvantages of warping due to thermal stress and deterioration of productivity. disappears.

Furthermore, since it is a combination of sheet piles, the second
Since the sheet piles are always supported and guided by the pair of conductors 4 shown in the figure, the disadvantage of rotating the sheet piles is used for defense purposes. Of course you can.

Figure 7 shows another construction example. This is to drive adjacent U-shaped steel sheet piles 10 in the same direction. In this construction, since the U-shaped steel arrows 1 [10] are not directly connected to each other, they are connected via the ■-shaped joints 28. This H-shaped handle 28 is made by bending seven flanges 29 on one side of H-shaped steel so that it can be fitted to the adjacent sheet piles 100 and 14, and the other flange 30 can be fitted to the auxiliary joint part 15. . In this case, the bottom 3 of the joint part 14 of the U-shaped steel sheet pile lO
1 to increase the section modulus, and at the same time, increase the length of the gap S (contact length) between the steel sheet piles 10 and prevent rotation of the steel sheet piles 10.

In this construction example, construction can be performed with a width that is half the width of the conventional U-shaped steel sheet pile construction method, and the construction can be performed with adjacent steel sheet piles 10 tightly connected to each other. Further, it is possible to make one side of the wall straight with the ■-shaped joint 28.Furthermore, since the joint bottom 31 is thick, warping in the longitudinal direction due to thermal stress is alleviated.

Furthermore, since the height of the arrows is approximately equal to the spacing between the guide members 4, it can be cast straight and has good workability.

More than 1M! As explained above, according to the present invention, it is possible to make the wall surface form on a straight line after construction using U-shaped steel sheet piles, and new construction methods that could not be performed with conventional U-shaped steel sheet piles are possible. It has the excellent effect of allowing paper cutting to be carried out safely and reliably since there is no rotation during driving.

[Brief explanation of the drawing]

Figure 1 is a construction diagram of a conventional U-shaped steel sheet pile, Figure 2 is a construction diagram of the same during driving, Figure 3 is an end view of the U-shaped steel sheet pile according to this embodiment, and Figure Il/c4 is the same. A plan view of the piezoelectric equipment for manufacturing U-shaped steel sheet piles, Figure 5 is a diagram of the crushing equipment for the same U-shaped steel sheet pile, Figure 6 is a diagram of the construction form using the same U-shaped steel sheet pile, and Figure @7 is a diagram of the same U-shaped steel sheet pile. It is a construction form diagram. 10... U-shaped steel sheet pile, 11... Web, 12
... flange, 13 ... steel sheet pile body, 14
...Joint part, Is...Auxiliary joint part. Agent Tatsuyuki Unuma (and 2 others) Figure 1 1Δ 3rd I21 Throwing

Claims (1)

[Claims] (1) A U-shaped steel sheet pile characterized in that an auxiliary joint is formed at the joint Kfa between the web of the steel sheet pile main body and the flange, which has a υ-shaped cross section.