JPS60133199A - Method and apparatus for constructing movable repulsive force receiver - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The conventional propulsion method for advancing a cylinder by excavating it underground is to have a fixed reaction wall at the rear of the cylinder absorb the reaction force of the propulsion force, and advance the cylinder by a propulsion jack. However, this reaction wall is fixed, and as the cylinder advances, the distance between the cylinder and the reaction wall increases, and spacers must be added one after another between the propulsion jack and the cylinder. One drawback is that it is only used for propulsion of medium-sized short cylinders with a length of 2 to 4 m.

The present invention eliminates the above-mentioned drawbacks of conventional propulsion methods, and provides an excellent method for constructing a movable reaction force receiver, which has been developed to enable the advancement of a large and extended cylindrical body, and the entire device thereof. It is something to do. That is, to explain one embodiment using the drawings, a reaction force cylinder 3 made of steel or concrete is placed at an appropriate position in front of the cylinder 1 on the starting platform A' in the cylinder launch base A from the ground. Lay it vertically to the required depth.

Next, from the starting base A, a small horizontal hole 4 is excavated in the horizontal direction using a horizontal poling propulsion method or a horizontal hole excavation method such as the Tanukibori method, and the vertical underground reaction force cylinder 3 is penetrated through this small horizontal hole. A connecting member 5 having the required strength is inserted into the reaction force cylinder 3 and fixed with a fixing member 6, and the rear part of the connecting member 5 can be freely attached to and detached from the movable reaction force receiving member 7 at the rear of the cylinder 1. Directly with the fixing tool 8 or
The movable reaction force receiver of the present invention is constructed so as to be indirectly fixed.

The method of moving the cylinder forward using the above-mentioned device is to insert a propulsion jack between the moving reaction force receiving part phase 7 and the cylinder 1, and to directly attach and detach it to the movable reaction force receiving member 7. The movable reaction force receiving member fixes the movable anchor 8 and transmits the reaction force of the underground passive earth pressure of the reaction force cylinder via the connecting member 5. Each time the body 1 is moved forward, the movable reaction force receiving member 7 and the fixing device 8 are moved forward by one stroke of the jack and fixed again, and the cylinder body 1 is repeatedly propelled through the movement, or the cylinder body 1 is The movable reaction force receiving member 7 is fully crimped to the rear end, and a hollow jack 9 (or
A removable fixing device 8 is indirectly fixed to the connecting member 5 extending to the rear of the traction device by a plurality of propulsion jacks, etc. combined with a traction jack, and a traction device such as a medium-hole jack 9 is used to The movable reaction force receiving member 7 and the cylinder 1 can be brought into close contact with each other and moved forward at the same time by using the reaction force of the medium reaction force cylinder 3 as a reaction force to pull the connecting part 5 through the connecting member 5. By repeating this operation, the long cylindrical body can be sequentially advanced into the ground without repeatedly using spacers as in the propulsion method.

The advantages and effects of the present invention are as follows.

1. The movable reaction force receiving member moves forward by the amount of forward movement of the cylindrical body, and fills the gap between the jack and the cylindrical body each time the cylindrical body moves forward, as in the conventional propulsion method. Since no spacer is required for the spacer, the heavy spacer and the time and effort of repeatedly installing and removing it are omitted, making it highly economical and shortening the construction period.

2. As mentioned above, this method does not require a spacer, so even a single cylinder with a large extension can be easily advanced forward over a long distance, eliminating the limitation of one cylinder extension as in conventional propulsion methods. I don't receive it.

3. The movable reaction force receiving member 9 is in close contact with the rear of the cylinder and moves forward together with the cylinder, or only the propulsion jack is interposed between the movable reaction force receiving member 9 and the cylinder 1 and conventional propulsion is used. Since the press member required for the construction method is not required, the risk of the spacer flying off due to addition and stretching is eliminated, and the construction period is also shortened at low cost.

4. The reaction force cylinder 3 of the present invention, which is vertically sunken into the ground from the ground, has its size, shape, length, and strength appropriately strengthened as necessary (for example, double-reinforced cylinder, concrete or It is possible to cast reinforced concrete), reach deep underground, and easily obtain large underground reaction forces due to passive earth pressure. Moreover, its construction is easy, quick and inexpensive.

5. Also, the connecting member 5 is inserted from the starting base A into a small horizontal hole 4 dug horizontally with respect to the vertical reaction cylinder 3, passing through the reaction cylinder 3, and inserting the front part thereof. Since it is fixed to the reaction force cylinder 3 by the fixing member 6, its construction is easy and economical, and the number of pieces can be increased and easily inserted depending on the required forward force of the cylinder.

6. Each fixed reaction wall used in the conventional propulsion method requires pouring, tearing down, and cleaning up on site, which requires time, labor, and labor, but this invention eliminates this and provides a movable reaction receiving member. can be used repeatedly, and the underground reaction cylinder can be recovered, which saves construction costs.As explained above, the method of the present invention eliminates the spacer and fixed reaction force at the rear of the launch base, which are required in conventional propulsion methods. The underground reaction cylinder can be easily constructed from the ground surface without the use of walls, and its shape, size, and strength can be arbitrarily selected according to need, and connecting members can be easily inserted and installed, and its strength is not limited by technical standards. It is novel and economical, and removes the restriction on the length of a single cylinder that cannot be propelled with conventional propulsion methods, making the length of a single cylinder many times longer than the length of the cylinder used in conventional propulsion methods. It has great technical advantages, such as being able to be used as a small cylinder and also allowing the huge cylinder to move forward without being restricted in its shape and size.

The apparatus of the present invention is a device for carrying out the invention of the method described above, and is a vertical reaction force cylinder 3 installed underground from the ground surface at appropriate locations in front of the starting base A of the underground cylinder to be constructed. An appropriate number of connecting members 5 and the reaction force cylinder 3 are inserted through the entire reaction force cylinder 3 into a small horizontal hole 4 which is horizontally dug from the starting base A toward the cylinder 3 using the horizontal hole excavation method. A fixing member 6 that fixes the connecting member 5 to The movable reaction force receiving device of the present invention is configured and constructed by attaching a removable fixing device 8 that fixes directly or indirectly.

The method of use and operation of the apparatus of the present invention will be omitted since it is believed that the explanation in the invention section of the above method is sufficient.

In addition, the advantages and effects of the device of the present invention are those that exhibit the excellent advantages and effects of the method of the present invention, and although detailed description thereof will be omitted, it is excellent in economy, safety, and novelty, and is technically superior to the conventional method. This is a revolutionary movable reaction force receiving device for all construction work, which eliminates the spacer required for the construction method, eliminates the restriction on the extension of a single cylinder, and theoretically increases the limit on the extension of the IWJ body.
Moreover, it is an excellent invention that allows the vertical reaction force cylinder to be installed more easily than the lichen, making it possible to easily remove the passive soil with a large reaction force and to increase the size and length of the cylinder. Further, in order to increase the reaction force, concrete or reinforced concrete can be placed inside the reaction force cylinder as shown in the figure.

The method and apparatus of the present application have been explained above with reference to embodiments, but of course the present invention is not limited to these embodiments, and various modifications of the design can be made without departing from the spirit of the invention. There is something that can be done.

[Brief explanation of the drawing]

FIG. 1 is a side view of an embodiment of the present invention. FIG. 2 is a plan view of FIG. 1. Code 1...Cylinder body 2...Starting base 3...Reaction force cylinder body 4...Small horizontal hole 5...Connecting member 6 ...Fixing member 7 ...Movable reaction force receiving member 8 ...Fixing tool 9 ...Medium hole jack (2 others)

Claims (2)

[Claims] (1) Regarding the method of constructing a reaction force receiver for advancing the cylinder into the ground, from the appropriate ground in front of the cylinder launch base, the reaction force cylinder made of steel or concrete, etc., as required in the entire vertical direction. A small horizontal hole is excavated horizontally in the direction of the reaction cylinder by horizontal poling, a raccoon hole method, or a horizontal hole digging method such as a propulsion method from the cylinder starting base. The inner connecting member is inserted, its tip is fixed to the reaction cylinder, and the rear part of the connecting member extends to the rear of the cylinder on the starting base, and is detachably attached to the movable reaction force receiving member installed at the rear of the cylinder. A method of constructing a movable reaction force receiver by attaching a fixing device directly or indirectly. (2) A reaction cylinder of a required depth is laid vertically from the ground into the ground at an appropriate position in front of the underground cylinder launch base, and a horizontal hole is excavated horizontally from the launch base towards the reaction cylinder. A connecting member inserted into a small horizontal hole to be drilled through, and a fixing member that completely fixes the connecting member and the reaction force cylinder at its tip. A movable reaction force receiving device comprising a connecting member extending rearward and a movable reaction force receiving member at the rear of a cylinder which is fixed directly or indirectly by a detachable fixing device.