JPH0710031U - Bar reinforcement for ground reinforcement - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a rod-shaped reinforcing material for ground reinforcement that is easy to manufacture and can respond to the need for reinforcing materials of various lengths very easily in the field. It is what [Structure] A rod-shaped reinforcing member which is forcibly pressed directly into the ground for use without being perforated by rotation. A rod portion having a hollow hole formed through the entire length along an axial center and a rear end thereof are provided. A hose connecting portion having a through hole communicating with the hollow hole, and an outer circumference attached to the tip of the rod portion having a larger diameter than the outer circumference of the rod portion and having a recess for fitting with the tip of the rod portion. When the tip of the rod portion is fitted to the bottom portion of the concave portion of the cap portion and the inner peripheral surface that communicates with the bottom portion of the cap portion, the rod portion communicates with the hollow hole and the rear end of the cap portion. At least one or more passages that open are formed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention grasps a part of the bar-shaped reinforcing material for ground reinforcement to give vibration or impact and forward thrust, and forcibly pushes the bar-shaped reinforcing material field directly into the ground without rotary perforation. Alternatively, the present invention relates to a reinforcing material for ground reinforcement used in a ground reinforcement strengthening method for preventing ground collapse or landslide prevention.

[0002]

[Prior art]

 As a conventional technique related to this field, there is Japanese Patent Application Laid-Open No. 4-87399 filed by the present applicants. Although the method of penetration of the ground reinforcement into the ground is different from that of the present invention, the ground reinforcement is provided with a drilling bit at the tip to give rotation and forward force to the ground reinforcement. Japanese Utility Model Publication No. 4-7231 is known as a method of making a hole to penetrate. The present invention is different from the method of Japanese Utility Model Publication No. 4-7231 in that the rod-shaped reinforcing material is forcedly pushed into the ground without rotating, and the usage method and the operation and effect are different. On the other hand, the bar-shaped reinforcing material for ground reinforcement needs to have various lengths depending on the conditions of the reinforcement site, and it was necessary to prepare bar-shaped reinforcing materials of different lengths.

[0003]

[Problems to be solved by the device]

 In the case of the conventional products as described above, for example, in the former case, in order to form a large diameter portion at the tip of the rod, the large diameter portion is formed in the rod forging process, or the large diameter portion is welded after the rod forging. Either one of them is required, and after that, a step of forming multiple ejection holes is required, and it is necessary to prepare various types of reinforcing materials with different lengths according to the application, and it is necessary to process all of them. Therefore, the production cost was also high. In the latter case, a bit for excavation for rotating is provided, but this bit is also produced due to the need to make it with a special shape suitable for drilling and using a special material. It will be an expensive product.

The present invention has been developed in view of the above matters, and is a product that is easy to manufacture and that can easily cope with the need for reinforcing materials of various lengths in the field. It is intended to be provided.

[0005]

[Means for Solving the Problems]

 Next, the present invention will be described. In a rod-shaped reinforcing member that is forcibly pressed directly into the ground without rotating and drilling, a rod portion having a hollow hole formed through the entire length along the axis and a rear end of the rod portion is provided. The hose connecting part having a through hole communicating with the hollow hole and the outer periphery attached to the tip of the rod part have a larger diameter than the outer periphery of the rod part and a recess for fitting with the tip of the rod part. It is composed of a bottomed cap part, and when the tip of the rod part is fitted to the bottom part of the concave part of the cap part and the inner peripheral surface communicating with this, the cap part communicates with the hollow hole. At least one or more passages that open at the rear end are formed.

Further, the hose connecting portion provided at the rear end of the rod portion of the ground-reinforcing rod-shaped reinforcing member has a hose connecting protrusion having a through hole formed at the rear end, and a screw and a screw of the rod portion are formed at the front end portion. It is preferable to combine a hose connection part having a structure in which a cylindrical part having a matching female screw is provided, and a protective cover having at least one opening having an appropriate width is provided outside the protrusion.

[0007]

[Action]

 Since the present invention has the above-described structure, a large diameter portion is formed at the tip of the rod portion by simply attaching the cap portion to the tip portion of the rod portion, and at the same time, cement milk or the like communicating with the hollow hole of the rod portion is formed. An injection hole for the coagulant is also formed, and the coagulant such as cement milk supplied from the hose connected to the hose connection part at the rear end of the rod part is guided through the hollow hole of the rod part to the passage in the cap part, The coagulant can be injected from the rear end of the cap part toward the rear and simultaneously with the penetration of the rod-shaped reinforcement into the ground.

[0008]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings.

First, the structure of the present invention will be described. A removable gripping mechanism for gripping a part of the ground reinforcing rod-shaped reinforcing material is used to forcefully press the ground directly into the ground without rotating and punching. The rod-shaped reinforcing member 1 to be used has a rod portion 3 having a hollow hole 2 formed through the entire length along the axis and a through hole communicating with the hollow hole 2 provided at the rear end. A bottomed bottom having a hose connecting part 4 and an outer circumference attached to the tip of the rod part 3 having a larger diameter than the outer circumference of the rod part 3 and having a recess 5 for fitting with the tip of the rod part 3. When the tip of the rod portion 3 is fitted to the bottom of the recess 5 of the cap portion 6 and the inner peripheral surface that communicates with this, it communicates with the hollow hole 2. At least one or more passages 7 ... Are not formed It is something.

In this case, the fitting portion of the cap portion 6 that fits with the distal end portion of the hollow rod portion 3 is formed by forming the concave portion 5 of the cap portion 6 into a concave portion having a gentle slope, as shown in FIG. A method in which the tip portion of the rod portion 3 is press-fitted into the concave portion 5, or a projection 8 to be inserted into the hollow hole 2 of the rod portion 3 is formed in the center of the concave portion 5 of the cap portion 3 as shown in FIG. At the center of 8, there are provided passages 7 ... Communicating with the hollow hole 2 of the rod part 3 and the bottom of the recess 5 of the cap part 6, respectively, and the protrusion is press-fitted or screwed into the hollow hole 2 of the rod part 3. 1 or a method of screwing with a screw formed on the rod portion 3 as shown in FIGS. 1, 2 and 6, and a hoist at the rear end of the rod portion 3 is used. There are various conceivable combinations with the connecting portion 4, for example, by welding with the rear end of the rod portion 3 Whether it is formed, screwed into a female screw formed at the rear end of the hollow portion 2 of the rod portion 3, pressed into the hollow hole of the rod portion 3, or pressed into the outer peripheral portion of the rod portion 3, or Is attached to the rear end of the rod portion 3 by screwing with a screw formed on the outer periphery of the rod portion 3.

Further, the hose connecting portion 4 has a hose connecting protrusion 16 having a through hole 17 formed at the rear end thereof, and the female end of the hose connecting portion 4 is screwed into the screw of the rod portion 3 at the tip end portion thereof. It is preferable that a cylindrical portion having a groove 14 is provided and a protective cover 13 having at least one opening 12 having an appropriate width is provided outside the protruding portion 16.

As described above, the connection of the respective parts adopts a form of fitting or screwing in an extremely simple method and does not have a special structure. Especially, the rod part 3 is commercially available. The product can be cut to the required length and used, and it is possible to provide an extremely inexpensive product.

Of course, as described above, the structure of the cap portion 6 and the hose connecting portion 4 is simple, and a reinforcing member of any length can be easily assembled with one type of cap portion 6 and hose connecting portion 4. It is possible and can easily be adapted to any site requirements.

FIG. 6 shows a state in which a socket (quick coupler) 9 is connected to the hose connecting fitting at the rear end of the bar reinforcing member 1 for ground reinforcement of the present invention, and the insertion portion 10 at the rear end of the socket 9 is shown. The tip of the hose 11 is connected to.

FIG. 7 is a cross-sectional view showing another embodiment of the hose connecting portion 4. The hose connecting projection having a through hole is joined to a commercially available hose socket 9, and the hose socket 9 is a hose socket 9. This is to be used by contacting with S11. In this case, as the reinforcing material is pushed in, the hose connecting portion often hits the reinforcing material guide tube of the reinforcing material placing device, and the hose is often broken, and a countermeasure has been desired. This part is provided with a protective cover 13 having at least one opening 12 having an appropriate width. Further, by interposing the elastic ring 15 between the rod portion 3 and the rear end of the rod portion 3 to increase the degree of sealing, other structures may have a rough accuracy and the manufacturing is easy.

Then, the hose socket 9 is attached and detached using the opening 12.

[0017]

[Effect of device]

 Since the present invention has the above-described structure, when the rod-shaped reinforcing material is driven into the ground, the cap attached to the tip receives a force in the direction of biting into the rod portion due to the resistance of the ground, and therefore the cap comes off during the driving. There is no need to worry, and therefore, the precision of the eye-tolerance, roundness, and roughness of the fitting part between the rod part of the rod-shaped reinforcement and the cap part can be rough, and the manufacturing cost of the cap part is low.

Further, even if there is a gap in the fitting portion between the cap portion and the rod portion, and the coagulant leaks from this gap, the leaked coagulant is generated between the outer periphery of the rod portion and the hole wall of the ground. The manufacture of the cap part and its attachment to the rod part does not have to be a matter of accuracy, as the annular gap between them will be filled and the leakage is rather favorable.

The cap part and the hose connection part are manufactured in a large amount by the lost wax method or the like, and they are attached to the hollow rebars of an arbitrary length as needed according to the situation of the site where the rod-shaped reinforcement is placed. Since it is possible to easily assemble rod-shaped reinforcements, this assembly work is not only possible on-site, but it is also necessary to prepare and stock a large number of dedicated rod-shaped reinforcements with different lengths. Moreover, the cost of inventory management will be greatly reduced.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view showing an embodiment of a cap portion.

FIG. 3 is a plan view of FIG.

FIG. 4 is a cross-sectional view of an essential part showing a second coupling method for fitting the tip portion of the rod portion 3 and the cap portion 6.

FIG. 5 is a cross-sectional view of essential parts showing a third coupling method for fitting the tip portion of the rod portion 3 and the cap portion 6.

FIG. 6 is an exploded side view showing the state of use of the present invention.

FIG. 7 is a cross-sectional view showing a second embodiment of the hose connecting portion which is one of the constituent members of the present invention.

[Explanation of symbols]

 1 ... Bar-shaped reinforcing material for ground reinforcement 2 ... Hollow hole 3 ... Rod part 4 ... Hose connection part 5 ... Recessed part 6 ... Cap part 7 ... Passage 8 ... Protrusion 9 ... Hose socket 10 ... Insertion portion 11 ... Hose 12 ... Opening portion 13 ... Protective cover 14 ... Female screw 15 ... Elastic ring 16 ... Projection portion 17 ...・ Through hole

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Ikuo Ito Creator Ikuo Ito 3-4-19, Atsuta-ku, Nagoya, Aichi Prefecture Teisaku Co., Ltd. (72) Creator Toshio Ogoshi 4-1, Kaigan-dori, Minato-ku, Osaka-shi, Osaka No. 18 Okada Airon Co., Ltd.

Claims (2)

[Scope of utility model registration request] 1. A rod-shaped reinforcing member, which is forcibly pressed directly into the ground for use without being perforated by rotation, has a rod portion having a hollow hole formed through the entire length along an axial center, and a rear end thereof. A hose connecting portion having a through hole that communicates with the hollow hole and an outer circumference attached to the tip of the rod portion are larger in diameter than the outer circumference of the rod portion, and a recess for fitting with the tip of the rod portion is provided. When the tip of the rod portion is fitted to the bottom portion of the concave portion of the cap portion and the inner peripheral surface that is continuous with the bottom portion of the cap portion having the bottom portion, the cap portion is communicated with the hollow hole, and A bar-shaped reinforcing material for ground reinforcement, wherein at least one passage opening at a rear end is formed. 2. The hose connecting portion provided at the rear end of the rod portion of the rod reinforcing member for ground reinforcement according to claim 1, wherein a hose connecting protrusion having a through hole is formed at the rear end, and a rod is provided at the front end portion. A cylindrical portion having a female screw that is screwed with the screw of the
A bar-shaped reinforcing material for ground reinforcement, characterized in that a hose connecting portion having a structure in which a protective cover having at least one opening having an appropriate width is provided outside the protrusion.