JPH0729017U - Sediment intrusion prevention plate in steel pipe sheet pile joint - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a plate for preventing sediment invasion in a steel pipe sheet pile joint that is easy to install and can completely prevent intrusion of sediment. A steel pipe sheet pile 1 having a joint portion 21 that can be fitted in advance in a slit 20 provided in a joint 12 of the steel pipe sheet pile 1 and a V-shaped notch 22 at the upper end thereof. A sand and sand intrusion prevention plate 10 made of a material having a strength that is easily broken by a tip portion of a joint 13 of a steel pipe sheet pile 1 that is subsequently placed adjacent to the steel pipe sheet pile 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is designed to prevent earth and sand from entering the steel pipe sheet pile joint when press-fitting the steel pipe sheet pile. It relates to the prevention plate.

[0002]

[Prior art]

 Conventionally, as a means for preventing the entry of earth and sand into the steel pipe sheet pile joint, as shown in FIG. 4, flexible rubber packing 4 such as flexible rubber is attached to both sides of the slit of the joint 12 of the steel pipe sheet pile 1, and as shown in FIG. As shown in (1), one in which the joint 13 of another steel pipe sheet pile 1 is fitted into the slit of the joint 12 of one steel pipe sheet pile 1 via the packing 4 has been proposed.

However, in this case, it is difficult to fix the packing 4 on both sides of the slit, and there is a problem that it takes time to install the packing 4. On the other hand, the steel pipe sheet pile 1 shown by the solid line in FIG. 6 is placed on the bottom of the joint 12 with the plate 10 and placed in the earth and sand S, and then the next steel pipe sheet pile 1 shown by the broken line is placed next to it. In doing so, since the joint 13 shown by the broken line is placed while penetrating into the slit of the joint 12, the earth and sand Sx that has entered the joint 12 is solidified at the joint 13 and further penetration is difficult. There is a problem that it becomes difficult, and when applying water-stopping mortar to the joints 12 and 13, it is necessary to wash out the soil in the joints, which is troublesome.

Further, a portion corresponding to the slit in FIG. 4 is formed on a thin steel plate 5 as shown in FIG. 7, and a T-shaped joint 7 of another steel pipe sheet pile 1 is attached to the thin steel plate 5 as shown in FIG. It is also proposed to penetrate. However, in this case, there is a problem in that the process of forming the thin steel plate 5 portion in FIG. 7 is difficult and the cost is high.

[0005]

[Problems to be solved by the device]

 The present invention has been made to solve the above conventional problems, and an object thereof is to provide a plate for preventing sediment intrusion in a steel pipe sheet pile joint, which is easy to install and can completely prevent intrusion of soil. There is.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the earth and sand intrusion prevention plate in the steel pipe sheet pile joint of the present invention has joint portions on both sides that can be fitted in advance to the slits provided in the joint of the steel pipe sheet pile that is previously driven. And has a notch, for example, a V-shaped notch, at the upper end thereof, and is made of a material that is easily ruptured by the tip of the joint of the steel pipe sheet pile that is subsequently placed adjacent to the above-mentioned steel pipe sheet pile. To be done.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a main part of a state where the earth and sand preventive plate of the present invention is attached to a steel pipe sheet pile joint, and FIG. 2 is A-A of FIG. FIG. 3 is a plan sectional view of a main part of a steel pipe sheet pile having a direction joint, and FIG. 3 is an enlarged perspective sectional view of an arrow B portion in FIG.

First, the earth and sand intrusion prevention plate 10 has joint portions 21 on both sides which can be fitted in advance into a slit 20 provided in the joint 12 of the steel pipe sheet pile 1 shown in FIG. 2, and has a V-shaped upper end. A notch 22 is provided, and a vertical notch 23 having an appropriate length, for example, about 1 cm is provided following the notch 22, and the notch 22 is previously fitted to the slit of the joint 12 of the steel pipe sheet pile 1 to be cast. It is something to put.

Next, this earth and sand intrusion prevention plate 10 is attached to a joint 13 of a steel pipe sheet pile 1 similar to the conventional example of FIG. It is made of a material having a strength that can be easily broken by the tip portion, for example, polyethylene, polypropylene, vinyl chloride or the like. The earth and sand intrusion prevention plate 10 having the above-described structure is fitted in advance into the slit 20 of the joint of the steel pipe sheet pile 1 to be placed first, and the bottom of the joint 12 is covered with a steel plate or the like to remove the steel pipe sheet pile 1. When the joint 12 is made to penetrate into the ground and is driven, the joint 12 has no gaps, and therefore the earth and sand do not enter the joint 12.

Next, similarly to the conventional example of FIG. 5, a similar steel pipe sheet pile 1 is provided adjacent to the steel pipe sheet pile 1 and the slits of the joint 13 are not closed, and the steel pipe sheet pile 1 is previously cast. When it is inserted into the ground while being fitted into the V-shaped notch 22 of the earth and sand intrusion prevention plate 10 of the joint 12, the earth and sand intrusion that is fitted into the slit of the joint 12 of the steel pipe sheet pile 1 that was previously placed The prevention plate 10 is fractured by the tip of the joint so that the steel pipe sheet pile 1 that is placed later can easily penetrate.

[0011]

[Effect of device]

 According to the earth and sand intrusion prevention plate of the present invention described above, since it is easy to attach to the steel pipe sheet pile joint and can completely prevent the invasion of earth and sand into the joint, the resistance when the steel pipe sheet pile penetrates is reduced, and This has the effect that the work of washing out the soil in the joint is not required when applying the waterproof mortar in the joint.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part of a state where the earth and sand prevention plate of the present invention is attached to a steel pipe sheet pile joint.

FIG. 2 is a plan cross-sectional view of a main portion of the joint portion of the steel pipe sheet pile in FIG. 1 in the AA direction.

FIG. 3 is an enlarged perspective sectional view of an arrow B portion in FIG.

FIG. 4 is a plan view of relevant parts showing a joint of a steel pipe sheet pile according to a conventional example.

5 is a plan view of an essential part of a state where a joint of a steel pipe sheet pile adjacent to the joint of FIG. 4 is inserted.

FIG. 6 is a side cross-sectional view in the soil showing a state in which a steel pipe sheet pile having a conventional joint is placed, and then a joint of the next steel pipe sheet pile is placed adjacent to the steel pipe sheet pile into the joint of the steel pipe sheet pile that has been cast. is there.

FIG. 7 is a plan sectional view of an essential part showing a joint of a steel pipe sheet pile of another conventional example.

8 is a plan sectional view of an essential part of a state where a joint of a steel pipe sheet pile adjacent to the joint of FIG. 7 is inserted.

[Explanation of symbols]

1 Steel pipe sheet pile 10 Sediment intrusion prevention plate 12, 13 Joint 20 Slit 21 Joint part 22 V-shaped notch

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 000204192 Taiyo Kogyo Co., Ltd. 4-8-4 Kikawahigashi, Yodogawa-ku, Osaka-shi, Osaka (72) Inventor Youji Kinoshita 5 Toa Construction Co., Ltd., Chiyoda-ku, Tokyo Inside the formula company (72) Inventor Masayuki Nakanowa 5 Yonbancho, Chiyoda-ku, Tokyo Toa Construction Industry Co., Ltd. (72) Insider Ken Takahashi 5 Yonbancho, Chiyoda-ku, Tokyo Toa Construction Industry Co., Ltd. (72) Inventor Akira Ishiguro 5 Yonban-cho, Chiyoda-ku, Tokyo Within Toa Construction Industry Co., Ltd. (72) Inventor Takahito Nishihara 5 Yonban-cho, Chiyoda-ku, Tokyo Within Toa Construction Industry Co., Ltd. (72) Inventor Masahiro Sakamoto Niigata 3-10 Ichibanhori-dori-cho, Niigata City Stock Company Fukuda Group (72) Inventor Akihiro Takahashi 1-5-1, Omotemachi, Okayama City, Okayama Prefecture Aisawa Industry Co., Ltd. (72) Device Isao Yamamoto 2-10-10 Koraibashi, Chuo-ku, Osaka Prefecture, Osaka Geotop Co., Ltd. (72) Inventor Nobuo Ikuta 3-22-1 Higashiyama, Meguro-ku, Tokyo Tokyo Taiyo Kogyo Co., Ltd. (72) Inventor Katayama Toru 3-6-7, Hakuro-cho, Chuo-ku, Osaka-shi, Osaka Within Kyoraku Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A slit provided in a joint of a steel pipe sheet pile that is previously cast has joint portions that can be fitted in advance on both sides and has a notch at an upper end thereof, and is adjacent to the steel pipe sheet pile. A plate for preventing intrusion of earth and sand in a steel pipe sheet pile joint made of a material that is easily broken by the tip of the joint of the steel pipe sheet pile that is subsequently placed.