JP2630709B2 - Tensile reinforcement construction equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tension reinforcing member construction apparatus for reinforcing ground immediately after cutting or general ground.

[0002]

2. Description of the Related Art Various devices have been developed for constructing a reinforcing member for preventing collapse of a newly cut slope or reinforcing a general ground.

[0003]

However, the conventional technique has the following problems when, for example, construction is performed in the immediate vicinity of a railway in use. <A> It is difficult for conventional devices to perform reinforcement work without affecting the surrounding ground. <B> In particular, a device that improves earth and sand with a large diameter,
It is dangerous because the surrounding earth and sand may collapse. <C> If the device improves soil with a small diameter, the risk is reduced, but the construction takes time and effort. <D> There are few devices that can be constructed on narrow land or land with limited height, such as construction in a city.

[0004]

SUMMARY OF THE INVENTION The object of the present invention is to improve such a point, and to provide an apparatus for constructing a tensile reinforcement capable of safely reinforcing the ground by using a large-diameter tensile reinforcement. Is to do.

[0005]

Means for Solving the Problems That is, the present invention comprises a movable trolley, a digging and stirring device capable of digging a slope of the ground mounted on the trolley, and a core material. The core consists of a hollow rotating shaft through which solidified liquid such as cement milk can pass, and a drilling blade and stirring blade provided around the rotating shaft. The hollow rotating shaft can rotate in the forward and reverse directions. At the tip of the hollow rotating shaft, a tip hole through which a core material can pass is opened, and a lid body is fitted to the tip hole in a state that it can be removed only to the outside, and a tension reinforcement body construction device,
Alternatively, in the tensile reinforcement applying apparatus, an inclined surface having a diameter decreasing toward the distal end hole is formed inside the hollow rotary shaft.

[0006]

To achieve this, the present invention relates to: <a> Since the excavated soil and the solidified material liquid such as cement milk are stirred and mixed in the ground while excavating the ground, a tension reinforcing member construction apparatus capable of being constructed without collapse of the surrounding ground. It is. <B> When constructing a tension reinforcing body with a hollow rod provided with excavating and stirring blades at the tip, the core material penetrates into the unstirred ground at the tip of the tension reinforcing body through the hollow of the rod, and the core material is removed. It is a tension reinforcing body construction device that can be arranged at the center. <C> Since the periphery of the core material is hardly agitated, it is surrounded by the solidified material liquid discharged when the stirring hollow rod is pulled out,
This is a tensile reinforcement construction equipment that can firmly adhere the core material and the surrounding improved earth and sand.

[0007]

Embodiment 1 An embodiment of a construction apparatus according to the present invention will be described below with reference to the drawings. <A> Overall Configuration The construction apparatus of the present invention includes a movable truck 1, a drilling / stirring hollow rod 6 mounted on the truck 1, and a core 3. The bogie 1 is a vehicle body that can run freely with ordinary crawler tracks and tires, and has a guide rail 4 with an adjustable angle on its upper part.
With. The guide rail 4 is provided with a rotary drive device 5 movable on the rail, and the rotary drive device 5 is provided with a hollow rod 6 for excavation and stirring.

<B> Hollow Rod 6 for Excavation and Stirring The hollow rod 6 for excavation and stirring mounted on the carriage 1 is a device in which a drilling blade 61 and a stirring blade 62 are protruded around the tip of a hollow rotary shaft. The rotation shaft 63 is formed of a hollow long pipe-like cylinder. Cement milk is supplied from the rear end of the rotating shaft 63 through the hollow inside the rotating shaft 63, or the core material 3 is inserted. For this purpose, a cement milk discharge port is formed around the tip of the hollow rod 6. Therefore, the cement milk supplied through the cavity of the rotating shaft 63 is supplied to the excavated soil through this discharge port.

<C> Lid A tip end hole 64 communicating with the cavity is opened at the tip of the hollow rotary shaft 63. The diameter of the distal end hole 64 is formed so as to allow the core material 3 to be described later to pass therethrough. The tip of the cavity is formed in a tapered shape in a state of being slid into the tip hole 64. Further, a lid 65 that can be removed only to the outside is attached to the tip hole 64 to prevent excavated soil from entering the cavity from the outside. The lid 65 can be removed only to the outside so that it does not come off during the excavation and agitation work. After the excavation is completed, if the core 65 pushes the lid 65 out of the inside, the lid 65 can be easily pushed out to make the tip hole. 64 can be removed. The shape of the lid 65 may be a general dish (FIG. 4), or it may be formed as a triangular prism or a cone having an acute end and an enlarged rear diameter (FIG. 5).

<4> Drilling blade, stirring blade A drilling blade 61 is fixed to the periphery of the tip of the hollow rotary shaft 63. Therefore, the ground can be excavated with the rotation of the rotating shaft 63. The excavator wing 61 not only excavates,
When stirring the excavated soil and cement milk and pulling out the excavated stirring rod, it also serves to push the mixture of excavated soil and cement milk back toward the tip. The stirring blade 62 is fixed around the hollow rotary shaft 63 at the rear of the excavating blade 61, and is configured to be able to stir soil and cement milk with the rotation of the rotary shaft 63. The stirring blade 62 is composed of a plurality of blades, and this shape serves to push out the mixture in the same manner as the excavation blade 61 when the hollow rod is pulled out while stirring and mixing. The co-rotation preventing blade is a blade-like member loosely fitted to the hollow rod 6 between the excavating blade 61 and the stirring blade 62, and has a function of cutting into the soil to prevent the co-rotation of the soil.

<E> Core 3 As will be described later, the core 3 is a member inserted into the hollow rotary shaft 63 from its tail end during construction. This core material 3
Uses a reinforcing bar, FRP, carbon fiber, steel pipe, or the like. It is particularly desirable that the core material 3 has a high tensile strength, can maintain the strength for a long time, and is hardly oxidized.

[0012]

[Method of Use] Next, a method of using the apparatus of the present invention will be described. <A> Movement of the device By moving the carriage 1, it approaches the position where the reinforcing member 7 is to be constructed.

<B> Excavation Stirring and Discharge The rotary drive device 5 mounted on the carriage 1 is driven. Then, the rotating shaft 63 of the excavating and stirring rod 6 rotates, and the stirring blade 6
1 moves forward while excavating the slope of the ground. The ground slope refers to a natural slope or an existing embankment slope or cut slope. At this time, the cement milk is discharged from a discharge port near the tip of the rotating shaft 63. Since the rotating shaft 63 is rotating at the same time as the discharge, the excavated soil and the cement milk are stirred by the stirring blade 62. As a result, a large-diameter reinforcing member 7 made of mortar mixed with soil (soil cement) is used.
Is completed.

<C> Inserting the core material 3 (FIG. 2) When the excavation and agitation to the deepest part are completed, the rotation of the rotating shaft 63 is stopped. Then, the core material 3 is inserted from the rear end of the rotating shaft 63 through the cavity of the rotating shaft 63. A tip hole 64 is opened at the tip of the rotating shaft 63, and a lid that can be removed only to the outside is provided. The inside is tapered toward the tip hole 64. Therefore, when the core material 3 made of a reinforcing bar or the like is inserted, the core material 3 is guided toward the distal end hole 64, and
5 will be pushed out. Since the lid 65 can be removed only to the outside, it can be easily removed by pressing the core member 3 from behind. The core material 3 is protruded to the outside from the front end hole 64 opened by opening the lid 65, and is driven into the ground to a certain depth by hitting from the rear end.

<D> Pulling out the stirring rod Next, the hollow rod 6 can be retracted while rotating the rotating shaft 63 in the direction opposite to the direction of the excavation, and can be pulled out with the core material 3 left. At this time, by appropriately adjusting the rotational speed and the pulling speed in the opposite direction, the hollow rod 6 can be pulled out in a state where the earth and sand of the improved reinforcing member 7 is compressed toward the tip. In this case, the rotating shaft 63
Can be pulled out while the core 3 is located exactly at the center of the core 3, and the position of the core 3 is not deviated from the center.

<E> Discharge of Cement Milk When the hollow rod 6 is pulled out, the earth and sand will be insufficient by the volume of the hollow rod 6, and a cavity will be formed to loosen the surrounding earth and sand. Therefore, when the hollow rod 6 is pulled out, the cement milk is discharged from the vicinity of the tip. Then, this cement milk will make up for the insufficient volume. Since the center part of the discharged cement milk is not stirred, the core material 3
The surrounding area is surrounded by high quality cement milk, which is hardly mixed with earth and sand.

<F> Fixing of the core material 3 When the hollow rod 6 is pulled out, the tail end of the core material 3 whose periphery is reinforced is exposed outside the hole. The tail end is fixed on a concrete wall to be built later.

【The invention's effect】

Since the construction of the construction apparatus of the present invention is as described above, the following effects can be achieved. <A> If the device of the present invention is used, the core material can be inserted simultaneously with the ground improvement. Therefore, a wide range of ground can be improved in a short time without requiring two steps as in the conventional case. <B> The diameter of the conventional reinforcing bar reinforced earth method is small. Therefore, it was not possible to increase the pull-out resistance. The use of the device according to the invention, however, is very economical, since it allows the construction of a stiffener with a large diameter and therefore a high pull-out resistance. <C> An improved earth and sand body having a larger diameter than that of a conventional reinforcing steel reinforced earth method can be constructed in the ground. Therefore, it is possible to improve the earth and sand in a wide area by a more efficient operation as compared with the conventional apparatus in which the construction position is frequently moved to construct a large number of reinforcements. <D> Work can be carried out with almost no earth and sand to be improved taken out. Therefore, railways and roads,
Even when working in a place close to a building, there is no danger of sinking the surrounding ground, and the work can be performed safely. <E> The improved reinforcing body can be configured as a central reinforcing body of a solidified material liquid having a high concentration at the center and a mixture of earth and sand and cement milk at the periphery. Therefore, a highly reliable and high-quality reinforcing body can be constructed underground. <F> When the hollow rod is retracted, the core can be placed at the center thereof. Therefore, the core material is always located at the center of the improved earth and sand, and even when a pulling force is applied later, the pulling force is reliably transmitted to the ground, thereby exhibiting a large pulling resistance. <G> When pulling out the excavation stirring rod, pull out the rod while compressing the soil and sand of the improved reinforcing body toward the tip by appropriately adjusting the rotation speed in the opposite direction and the pulling speed. Can be. Therefore, the earth and sand will not be loosened even if it is pulled out, but instead will be compressed and compacted,
A strong reinforcement can be formed.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a construction device for a tensile reinforcement according to the present invention.

FIG. 2 is an explanatory view of the state of use.

FIG. 3 is an explanatory view of the state of use.

FIG. 4 is an explanatory view of a tip hole and a lid.

FIG. 5 is an explanatory view of a tip hole and a lid.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yukihiko Tamura 2-22-15- 106, Katsuradai, Midori-ku, Yokohama-shi, Kanagawa (72) Inventor Kosei Fukuda 2-4-1 Akasaka, Minato-ku, Tokyo Tenox Co., Ltd. (72) Inventor Shigeru Yoshida 2-4-1, Akasaka, Minato-ku, Tokyo Tennox Co., Ltd. (72) Inventor Shushi Kami 4-1-1, Akasaka, Minato-ku, Tokyo Tenox Co., Ltd. (56 References JP-A-4-5312 (JP, A) JP-A-4-5313 (JP, A) JP-A-4-52317 (JP, A) JP-A-1-146013 (JP, A) 1-146014 (JP, A) Japanese Utility Model 3-79337 (JP, U) Japanese Utility Model 2-1444036 (JP, U)

Claims (2)

(57) [Claims] 1. A movable trolley and a trolley mounted on the trolley.Can excavate the slope of the groundDrilling stirrer
And a core material, and the excavating and stirring device has a core material and cement milk inside.Solid
Chemical liquidHollow rotating shaft that can pass through and around the rotating shaft
It consists of a drilling wing and a stirring blade provided inThe hollow rotating shaft can rotate in the forward and reverse directions,  At the tip of the hollow rotating shaft, a core materialPassableOpen tip hole
In this tip hole, the lid can be
Fitted, tensile reinforcement construction equipment. (2)The tension reinforcing body construction device according to claim 1.
And The diameter becomes smaller toward the tip hole inside the hollow rotary shaft
Characterized by forming an inclined surface, Tensile reinforcement construction equipment.