JP5902453B2 - Natural mountain reinforcement bag - Google Patents

Description

  The present invention relates to a natural ground reinforcing bag used mainly for reinforcing natural ground.

  In the ground anchor method, a slope structure such as a slope frame arranged on a slope and an anchor fixed on a ground extending behind the slope are interconnected via a tension member and tension is applied to the tension member. The tension force introduced into the tensile material acts on the slope via the slope structure, increasing the shear resistance of the natural ground and preventing its collapse in advance. It becomes.

  On the other hand, the nailing method is to insert a reinforcing bar as a core material into a natural ground and fill the grout material between its surroundings and the natural ground, and fix the reinforcing bar to the natural ground over its entire length. The deformation when the natural ground is about to move is constrained by the shearing, bending or tensile rigidity of the reinforcing bars, and the slope can be prevented from falling and stabilized as in the case of the ground anchor method.

  On the other hand, the core material and the bag body arranged so as to surround the core material are inserted into the reinforcing material insertion hole formed in advance in the ground, and then the circumferential surface of the bag body contacts the inner surface of the reinforcing material insertion hole. A construction method is known in which a grout material is pressure-injected into the bag so as to come into contact with the bag (Patent Document 1).

  In such a construction method, the circumferential surface of the bag body comes into contact with the inner surface of the drilling hole so as to expand the reinforcing material insertion hole as the grout is inflated by injecting the grout. Integrate.

  In other words, this method constrains deformation of the natural ground in the form of fixing force to the natural ground over the entire length of the core material plus the fixing force due to the expansion of the bag body. As you can see from the name of), it is highly expected as a new construction method with much better fixing power than the conventional nailing method.

JP 2006-188845 A JP 2009-191582 A

  In attaching the bag body to the core material, the core material is inserted into the tube-shaped bag body, and both ends of the bag body are squeezed and fixed to the core material. If the leakage occurs from between the both ends of the bag body and the core material, the bag body cannot be expanded, and as a result, the reinforcing material insertion hole cannot be expanded.

  Therefore, conventionally, the water tightness of both was ensured by tightly binding the vicinity of the edge of the end of the bag body to the core with a steel restraining band or wire (Patent Document 2).

  However, if the grout pressure in the bag body is increased in order to increase the fixing force to the natural ground due to the spreading action of the bag body, the restraint band that has bound the vicinity of the edge of the bag body as the internal pressure of the bag body increases. As a result, there is a problem that the wire and the wire are loosened and the binding portion may be displaced in the axial direction of the core material or the bag body may be damaged.

  Such a problem leads to a situation in which the grout material leaks from the place where the looseness occurs or the damaged place, the injection pressure decreases, and the bag body cannot be expanded as planned.

  The present invention has been made in consideration of the above-described circumstances, and provides a ground reinforcement bag body capable of preventing leakage of grout material from the end portion of the bag body even when the internal pressure of the bag body increases. Objective.

In order to achieve the above-mentioned object, the ground pile reinforcing bag according to the present invention is formed in a tube shape so that the core material can be inserted and disposed, and the end portion is fixed to the core material. In the ground reinforcement bag that can inject grout material into the internal space,
The bag body includes a bag body and a fixing member attached to the end of the bag body, and the fixing member is disposed between the bag side sleeve and the bag side sleeve where the peripheral edge of the end of the bag body is in contact with the outer peripheral surface. And a caulking member for tightly attaching the peripheral edge of the end portion of the bag body, and the bag side sleeve is configured so that the core material can be inserted into the inner side thereof, and the core material is inserted and fixed to the core material. A core-side sleeve that is threadedly engaged with a male screw formed on the outer peripheral surface of the core-side sleeve so that the bag-side sleeve can be coaxially and detachably attached to the core-side sleeve. The female screw is formed on the inner peripheral surface of the bag-side sleeve .

  Moreover, the ground pile reinforcing bag according to the present invention has a movement restricting portion for restricting movement of the bag side sleeve protruding from the core side sleeve.

In addition, as described in claim 3, the ground reinforcing bag according to the present invention is formed in a tube shape so that the core material can be inserted and disposed, and the end portion is fixed to the core material so as to be in the internal space. In the ground reinforcement bag which can inject grout material,
The bag body includes a bag body and a fixing member attached to the end of the bag body, and the fixing member is disposed between the bag side sleeve and the bag side sleeve where the peripheral edge of the end of the bag body is in contact with the outer peripheral surface. And a caulking member for tightly attaching the peripheral edge of the end portion of the bag body, and the bag side sleeve is configured so that the core material can be inserted into the inner side thereof, and the core material is inserted and fixed to the core material. The core side sleeve is screwed into a male screw formed at one end of the core side sleeve so that the bag side sleeve can be coaxially and detachably attached to the core side sleeve. A movement restricting member for restricting the movement of the bag side sleeve is provided, and a pressing holding portion for pressing the bag side sleeve is protruded from the other end of the core side sleeve.

Also, the natural ground reinforcing bag according to the present invention as described in claim 4, the internal space by the core material is that each end is formed into a tube so that it can be inserted and arranged is fixed to the core material In the ground reinforcing bag body that can inject grout material into
A bag body;
A first core material side sleeve in which the core material is inserted and fixed to the core material, and an external thread is formed on the outer peripheral surface;
A first caulking member that narrows the peripheral edge of one end of the bag body between the first bag-side sleeve and the first bag-side sleeve, the peripheral edge of the bag body being in contact with the outer peripheral surface; A first fixing member formed by forming on the inner peripheral surface of the first bag-side sleeve a female screw that is screwed to the male screw of the first core-side sleeve;
A second core material side sleeve in which the core material is inserted and fixed to the core material, and an external thread is formed on the outer peripheral surface;
A second bag-side sleeve in which the peripheral edge of the other end of the bag body is in contact with the outer peripheral surface, and a second caulking member that tightly attaches the peripheral edge of the other end of the bag body to the second bag-side sleeve. And a second fixing member formed by forming a female screw to be engaged with a male screw of the second core material side sleeve on the inner peripheral surface of the second bag side sleeve,
Of the end portions of the core material, the side on which the bag body is inserted is set as an insertion end portion, and the first core material side sleeve and the second core material side sleeve from the insertion end portion. The core material side sleeve arranged at the separated position is the first core material side sleeve, the core material side sleeve arranged at the position close to the insertion end is the second core material side sleeve, and the first One bag-side sleeve is configured such that its inner diameter is larger than the outer diameter of the second core-side sleeve.

  Further, the ground reinforcement bag according to the present invention is a movement that restricts the movement of the bag body to an end located on the opposite side of the insertion end of the first core side sleeve. A limiting portion is provided, or includes a movement limiting member that is screwed into a male screw formed on the opposite end to limit the movement of the bag body.

  Further, the ground pile reinforcing bag according to the present invention is screwed into a male screw formed at an end located on the same side as the insertion end of the second core side sleeve. A movement restricting member for restricting the movement of the bag body, and a pressing holding portion for pressing the second bag side sleeve projecting from the movement restricting member at the other end of the second core side sleeve It is.

Also, the natural ground reinforcing bag according to the present invention as described in claim 7, the internal space by the core material is that each end is formed into a tube so that it can be inserted and arranged is fixed to the core material In the ground reinforcing bag body that can inject grout material into
A bag body;
A first core material side sleeve in which the core material is inserted and fixed to the core material, and an external thread is formed on the outer peripheral surface;
A first caulking member that narrows the peripheral edge of one end of the bag body between the first bag-side sleeve and the first bag-side sleeve, the peripheral edge of the bag body being in contact with the outer peripheral surface; A first fixing member formed by forming on the inner peripheral surface of the first bag-side sleeve a female screw that is screwed to the male screw of the first core-side sleeve;
A second core material side sleeve in which the core material is inserted and fixed to the core material, and an external thread is formed on the outer peripheral surface;
A second bag-side sleeve in which the peripheral edge of the other end of the bag body is in contact with the outer peripheral surface, and a second caulking member that tightly attaches the peripheral edge of the other end of the bag body to the second bag-side sleeve. And a second fixing member formed by forming a female screw to be engaged with a male screw of the second core material side sleeve on the inner peripheral surface of the second bag side sleeve,
Of the male screw formed on the first core member side sleeve and the male screw formed on the second core member side sleeve, one is a right screw and the other is a left screw.

  Further, the ground pile reinforcing bag according to the present invention is the movement of the bag main body to the end located on the side opposite to the side where the bag main body is arranged, of the end of the first core material side sleeve. A movement restricting member that restricts the movement of the bag main body, and is provided with a movement restricting member that is screwed into a male screw formed at the end, or the end of the second core side sleeve Among them, a movement restricting portion for restricting the movement of the bag main body is protruded at an end located on the side opposite to the side where the bag main body is arranged, or is screwed into a male screw formed at the end. A movement restricting member for restricting movement of the bag body is provided.

In addition, the ground pile reinforcing bag according to the present invention is formed in a tube shape so that the core material can be inserted and disposed, and each end is fixed to the core material, as described in claim 9. In the ground reinforcing bag body that can inject grout material into
A bag body;
A first core material side sleeve in which the core material is inserted and fixed to the core material, and an external thread is formed on the outer peripheral surface;
A first caulking member that narrows the peripheral edge of one end of the bag body between the first bag-side sleeve and the first bag-side sleeve, the peripheral edge of the bag body being in contact with the outer peripheral surface; A first fixing member formed by forming on the inner peripheral surface of the first bag-side sleeve a female screw that is screwed to the male screw of the first core-side sleeve;
A second core material side sleeve in which the core material is inserted and fixed to the core material, and an external thread is formed on the outer peripheral surface of one end;
A second bag-side sleeve in which the peripheral edge of the other end of the bag body is in contact with the outer peripheral surface, and a second caulking member that tightly attaches the peripheral edge of the other end of the bag body to the second bag-side sleeve. A second fixing member,
Of the end portions of the core material, the side on which the bag body is inserted is an insertion end portion, and the insertion end portion of the first core material side sleeve and the second core material side sleeve is the insertion end portion. The core material side sleeve arranged at a close position is used as the second core material side sleeve and is screwed into the male screw of the second core material side sleeve so as to limit the movement of the second bag side sleeve. A configured movement restriction member,
A pressing holding portion that presses the second bag-side sleeve on the movement restricting member protrudes from the other end of the second core material-side sleeve, and the inner diameter of the first bag-side sleeve is the second. The core material side sleeve is configured to be larger than the outer diameter.

  In the ground reinforcement bag according to the present invention, the core-side sleeve disposed at a position spaced from the insertion end is used as the first core-side sleeve. A movement restricting portion for restricting the movement of the first bag-side sleeve is provided in a protruding manner.

  Further, the ground reinforcement bag according to the present invention includes an annular member that surrounds the bag body on the bag body side of the fixing member, the first fixing member, or the second fixing member. is there.

  Further, the ground pile reinforcing bag according to the present invention communicates the outer peripheral surface side and the inner peripheral surface side of the core material side sleeve, the first core material side sleeve, or the second core material side sleeve with each other. The adhesive filling hole is provided in the core material side sleeve, the first core material side sleeve, or the second core material side sleeve.

  Further, the ground reinforcement bag according to the present invention includes an inner space of the core material side sleeve, the first core material side sleeve, or the second core material side sleeve. 1 core material side sleeve or two core material side sleeves are provided in parallel with the material axis of the second core material side sleeve and parallel to each other, one of which is a core material through hole through which the core material is inserted, the other Is a pipe insertion hole through which a grout injection pipe for injecting a grout material into the internal space of the bag body is inserted.

  Further, in the natural ground reinforcing bag according to the present invention, the core is made of a PC steel wire.

  Further, the ground pile reinforcing bag according to the present invention covers a core exposed side of the core material, the exposed portion of the tip extending from the first core material side sleeve, or the second core material side sleeve. The core material covering cap is provided.

  After inserting the core material into the reinforcing material insertion hole of the natural mountain, the ground reinforcing bag body expands in the radial direction by injecting the grout material into the inside and hits the hole wall of the reinforcing material insertion hole. Since the reinforcing material insertion hole is further expanded by being in contact, the inner diameter when expanded in the radial direction is larger than the outer diameter of the core material.

  Therefore, in order to fix the end portion of the natural ground reinforcing bag body to the core material, for example, it is necessary to fold the peripheral edge portion of the natural ground reinforcing bag body into a hook shape and fix it to the core material with a wire or the like. However, since the work is performed while handling a core material with high rigidity, it takes a considerable amount of time to manufacture even in the factory as well as in the field.

[First invention]
On the other hand, in the ground reinforcing bag body according to the first invention, when attaching the fixing member comprising the bag side sleeve and the caulking member to the end portion of the bag body, the peripheral edge of the end portion of the bag body is attached to the outer peripheral surface of the bag side sleeve. By caulking a caulking member from the periphery in a state where the bag is in contact, the edge of the end of the bag body is narrowly attached in advance between the bag side sleeve and the caulking member.

In other words, the work for attaching the fixing member to the end of the bag body can be completed in a short time because it is not necessary to run a core material that is rigid and has a long overall length compared to the case where it is directly fixed to the core material. It becomes possible. In addition, the operation itself of fixing the end portion of the bag body to the core material is sufficient only by inserting the core material inside the bag side sleeve and fixing the bag side sleeve to the core material via a predetermined member. .

  Therefore, the overall workability when fixing the end of the bag body to the core material is significantly improved.

The core material side sleeve is provided so that the core material side sleeve is inserted and fixed to the core material, and the bag side sleeve can be coaxially and detachably attached to the core material side sleeve. since it is configured, it is possible to proceed with the securing work of the core insertion operation and the core member to the bag body separately, it is possible to further enhance the overall work efficiency.

  The core side sleeve for attaching the bag side sleeve to the core side sleeve in a detachable manner is optional, but the side opposite to the side on which the bag body is disposed as the internal pressure increases due to the injection of grout material If the bag-side sleeve is kept from shifting, leakage of the grout material can be more reliably prevented.

  As a specific configuration in this case, for example, a female screw that is screwed into a male screw formed on the outer peripheral surface of the core side sleeve is formed on the inner peripheral surface of the bag side sleeve, or the core material A movement restricting member that is screwed into a male screw formed at one end of the side sleeve and restricts the movement of the bag side sleeve; and a pressing holding portion that presses the bag side sleeve against the movement restricting member A configuration in which the other end of the sleeve projects is possible.

  Here, in the former configuration, the movement of the bag-side sleeve can be restricted by the engaging action of the screws, but a movement restricting portion that restricts the movement of the bag-side sleeve is provided in the core-side sleeve. If the core side sleeve is fixed to the core material so that the side opposite to the side on which the bag body is arranged is in contact with the movement restricting portion of the bag side sleeve, the grout material The bag-side sleeve can be prevented from shifting due to the injection more reliably.

[Second invention]
In the ground support bag body according to the second invention, the first fixing member is the first fixing member from the periphery thereof in a state where the peripheral edge of the bag body is in contact with the outer peripheral surface of the first bag-side sleeve. A caulking member is applied and caulked so that the peripheral edge of the bag main body is narrowed in advance between the first bag side sleeve and the first caulking member, and the first core side A female screw that is screwed into a male screw formed on the outer peripheral surface of the sleeve is formed on the inner peripheral surface of the first bag-side sleeve.

  Similarly to the first fixing member, the second fixing member is caulked by applying the second caulking member from the periphery thereof in a state where the peripheral edge of the other end of the bag body is in contact with the outer peripheral surface of the second bag side sleeve. Thus, the peripheral edge of the other end of the bag main body is configured to be narrowed in advance between the second bag side sleeve and the second caulking member, and is formed on the outer peripheral surface of the second core side sleeve. A female screw screwed to the male screw is formed on the inner peripheral surface of the second bag side sleeve.

  The first bag-side sleeve is configured such that its inner diameter is larger than the outer diameter of the second core-side sleeve.

  In order to fix each end of the bag body to the core member via the first fixing member and the second fixing member, first, the first core member side sleeve and the second core member side sleeve are connected to the core member. Pre-adhering to.

  Here, the first core material side sleeve and the second core material side sleeve have the insertion end portion as the insertion end portion of the end portion of the core material where the bag main body is inserted in the subsequent process, and the insertion end portion. The first core material side sleeve is fixed to the core material so that the first core material side sleeve is disposed at a position away from the first core material, and the second core material side sleeve is disposed at a position close to the first core material side sleeve.

  Next, the core material is inserted into the bag main body from the insertion end, and the first bag side sleeve of the bag main body passes through the second core material side sleeve and then reaches the first core material side sleeve. Next, the bag body is advanced along the axis of the core material.

  If the first bag side sleeve of the bag body reaches the first core side sleeve, the bag body is formed on the outer peripheral surface of the first core side sleeve while rotating the bag body around the core axis of the core material. The female screw formed on the inner peripheral surface of the first bag side sleeve is screwed to the male screw, and the second bag side sleeve is connected to the male screw formed on the outer peripheral surface of the second core material side sleeve. The first bag side sleeve and the second bag side sleeve are respectively attached to the first core side sleeve and the second core side sleeve by screwing a female screw formed on the inner peripheral surface.

  According to such a configuration, when attaching the first fixing member and the second fixing member to each end portion of the bag body, it is necessary to route a core material that has higher rigidity and a longer overall length than when directly fixed to the core material. It is possible to complete the work in a short time because there is not.

  In addition, the operation itself of fixing each end portion of the bag body to the core material is performed by fixing the first core material side sleeve and the second core material side sleeve to the core material, and then the first core material. It is only necessary to attach the first bag side sleeve and the second bag side sleeve to the side sleeve and the second core side sleeve, respectively.

  Further, since the inner diameter of the first bag-side sleeve is set larger than the outer diameter of the second core-side sleeve, the first bag-side sleeve is passed through the second core-material-side sleeve. The first core material side sleeve and the second core material side sleeve can be fixed to the core material in advance.

  Therefore, the attaching operation of the first fixing member and the second fixing member to the bag body and the fixing operation of the first core member side sleeve and the second core member side sleeve to the core member can be simultaneously performed. After the first core side sleeve and the second core side sleeve are all fixed to the core, the first bag side sleeve and the second bag side sleeve are connected to the first core. It can be attached to the material side sleeve and the second core material side sleeve, respectively, and thus the peripheral edge of the bag body is folded into a hook shape with respect to the core material having high rigidity and troublesome handling. Compared to the conventional case of fixing, not only the leakage of the grout material due to the increase in internal pressure can be prevented, but also the overall workability when fixing each end of the bag body to the core material is remarkably improved.

  Further, the bag body is arranged by the screw engaging action with the first core side sleeve in the first bag side sleeve and the screw engaging action with the second core side sleeve in the second bag side sleeve. Since the movement to the side opposite to the formed side is restricted, there is no possibility that the grout material leaks even if the internal pressure rises due to the grout material injection, and the reverse movement to the side where the bag body is arranged, In other words, since the return is similarly prevented, leakage of the grout material before and after the start of the injection of the grout material can be prevented in advance.

  Here, among the end portions of the first core side sleeve, a movement limiting portion for restricting the movement of the bag body is provided at an end located on the opposite side of the insertion end portion, or on the opposite side. If a movement restricting member that is screwed into a male screw formed at the end and restricts the movement of the bag body is provided, the movement of the first bag-side sleeve can be more reliably prevented.

  Further, a movement limiting member that is screwed into a male screw formed on an end located on the same side as the insertion end among the ends of the second core side sleeve and restricts the movement of the bag main body. And a movement holding member that presses the second bag-side sleeve protrudes from the other end of the second core-side sleeve and moves or reverses the second bag-side sleeve. Directional movement can be prevented more reliably.

[Third invention]
In the ground support bag body according to the third invention, the first fixing member is the first fixing member from the periphery thereof in a state in which the peripheral edge of the bag body is in contact with the outer peripheral surface of the first bag-side sleeve. A caulking member is applied and caulked so that the peripheral edge of the bag main body is narrowed in advance between the first bag side sleeve and the first caulking member, and the first core side A female screw that is screwed into a male screw formed on the outer peripheral surface of the sleeve is formed on the inner peripheral surface of the first bag-side sleeve.

  Similarly to the first fixing member, the second fixing member is caulked by applying the second caulking member from the periphery thereof in a state where the peripheral edge of the other end of the bag body is in contact with the outer peripheral surface of the second bag side sleeve. Thus, the peripheral edge of the other end of the bag main body is configured to be narrowed in advance between the second bag side sleeve and the second caulking member, and is formed on the outer peripheral surface of the second core side sleeve. A female screw to be screwed into the male screw is formed on the inner peripheral surface of the second bag side sleeve, but is formed on the male screw and the second core side sleeve formed on the first core side sleeve. One of the male threads is a right-hand thread and the other is a left-hand thread.

  In order to fix each end of the bag body to the core member via the first fixing member or the second fixing member, the first core member side sleeve, the second core member side sleeve and the bag body are The bag body is inserted through the core material so as to be disposed between the first core material side sleeve and the second core material side sleeve.

  Next, the first core material side sleeve and the second core material side sleeve are fixed to the core material with the bag body inserted through the core material.

  Next, the female screw formed on the inner peripheral surface of the first bag-side sleeve is connected to the male screw formed on the outer peripheral surface of the first core-side sleeve while rotating the bag body around the core axis of the core material. And the female screw formed on the inner peripheral surface of the second bag-side sleeve is screwed into the male screw formed on the outer peripheral surface of the second core-side sleeve.

  Here, one of the male screw formed on the first core side sleeve and the male screw formed on the second core side sleeve is a right screw, the other is a left screw, in other words, a reverse screw. Therefore, by rotating the bag body in a predetermined direction, the first bag side sleeve is screwed into the first core material side sleeve, and at the same time, the second bag side sleeve becomes the second core material. Screwed into the side sleeve.

  According to such a configuration, when attaching the first fixing member and the second fixing member to each end portion of the bag body, it is necessary to route a core material that has higher rigidity and a longer overall length than when directly fixed to the core material. It is possible to complete the work in a short time because there is not.

  In addition, the operation itself of fixing each end portion of the bag body to the core material is performed by fixing the first core material side sleeve and the second core material side sleeve to the core material, and then the first core material. It is only necessary to attach the first bag side sleeve and the second bag side sleeve to the side sleeve and the second core side sleeve, respectively.

  Further, the bag body is arranged by the screw engaging action with the first core side sleeve in the first bag side sleeve and the screw engaging action with the second core side sleeve in the second bag side sleeve. Since the movement to the side opposite to the formed side is restricted, there is no possibility that the grout material leaks even if the internal pressure rises due to the grout material injection, and the reverse movement to the side where the bag body is arranged, In other words, since the return is similarly prevented, leakage of the grout material before and after the start of the injection of the grout material can be prevented in advance.

  Here, a movement restricting portion that restricts movement of the bag body protrudes from an end portion of the first core side sleeve that is located on the side opposite to the side where the bag body is disposed, or A movement restricting member that is screwed into a male screw formed at the end and restricts the movement of the bag main body, or of the end of the second core side sleeve, on the side where the bag main body is disposed A movement limiting member that restricts the movement of the bag main body by projecting a movement limiting portion that restricts the movement of the bag main body at an end located on the opposite side of the bag, or screwed into a male screw formed at the end. If provided, the movement of the first bag-side sleeve and the second bag-side sleeve can be more reliably prevented.

[Fourth Invention]
In the ground support bag body according to the fourth invention, the first fixing member is the first fixing member from the periphery thereof in a state where the peripheral edge of the bag body is in contact with the outer peripheral surface of the first bag-side sleeve. A caulking member is applied and caulked so that the peripheral edge of the bag main body is narrowed in advance between the first bag side sleeve and the first caulking member, and the first core side A female screw that is screwed into a male screw formed on the outer peripheral surface of the sleeve is formed on the inner peripheral surface of the first bag-side sleeve.

  On the other hand, in the same manner as the first fixing member, the second fixing member is also applied with the second caulking member from the periphery thereof in a state where the other peripheral edge of the bag body is in contact with the outer peripheral surface of the second bag side sleeve. By crimping, the periphery of the other end of the bag body is configured to be narrowed in advance between the second bag side sleeve and the second caulking member. A movement limiting member is provided that is loosely fitted to the material-side sleeve and has a female screw that is screwed into a male screw formed on the outer peripheral surface of the second core material-side sleeve.

  The first bag-side sleeve is configured such that its inner diameter is larger than the outer diameter of the second core-side sleeve.

  In order to fix each end of the bag body to the core member via the first fixing member and the second fixing member, first, the first core member side sleeve and the second core member side sleeve are connected to the core member. Pre-adhering to.

  Here, the first core material side sleeve and the second core material side sleeve have the insertion end portion as the insertion end portion of the end portion of the core material where the bag main body is inserted in the subsequent process, and the insertion end portion. The first core material side sleeve is fixed to the core material so that the first core material side sleeve is disposed at a position away from the first core material, and the second core material side sleeve is disposed at a position close to the first core material side sleeve.

  Next, the core material is inserted into the bag main body from the insertion end, and the first bag side sleeve of the bag main body passes through the second core material side sleeve and then reaches the first core material side sleeve. Next, the bag body is advanced along the axis of the core material.

  If the first bag side sleeve of the bag body reaches the first core side sleeve, the bag body is formed on the outer peripheral surface of the first core side sleeve while rotating the bag body around the core axis of the core material. The female screw formed on the inner peripheral surface of the first bag-side sleeve is screwed into the male screw.

  Next, in a state where the second bag-side sleeve is loosely fitted to the second core material-side sleeve, the movement restricting member is screwed onto the male screw formed on the outer peripheral surface of the second core material-side sleeve. Thus, the second bag side sleeve is sandwiched between the second holding member formed on the other end of the second core side sleeve.

  According to such a configuration, for attaching the first fixing member and the second fixing member to each end portion of the bag body, a core material having higher rigidity and a longer overall length is used as compared with the case of directly fixing to the core material. The work can be completed in a short time because it does not need to be turned.

  In addition, the operation itself of fixing each end portion of the bag body to the core material is performed by fixing the first core material side sleeve and the second core material side sleeve to the core material, and then the first core material. It is only necessary to attach the first bag side sleeve and the second bag side sleeve to the side sleeve and the second core side sleeve, respectively.

  Further, by setting the inner diameter of the first bag-side sleeve to be larger than the outer diameter of the second core-side sleeve, the first bag-side sleeve is used as the core material so as to pass over the second core-side sleeve. Accordingly, the first core material side sleeve and the second core material side sleeve can be fixed to the core material in advance.

  Therefore, the attaching operation of the first fixing member and the second fixing member to the bag body and the fixing operation of the first core member side sleeve and the second core member side sleeve to the core member can be simultaneously performed. After the first core side sleeve and the second core side sleeve are all fixed to the core, the first bag side sleeve and the second bag side sleeve are connected to the first core. It can be attached to the material side sleeve and the second core material side sleeve, respectively, and thus the peripheral edge of the bag body is folded into a hook shape with respect to the core material having high rigidity and troublesome handling. Compared to the conventional case of fixing, not only the leakage of the grout material due to the increase in internal pressure can be prevented, but also the overall workability when fixing each end of the bag body to the core material is remarkably improved.

  Further, the detachable structure of the second bag side sleeve and the second core material side sleeve is not screwed together, but the second bag side sleeve is loosely fitted to the second core material side sleeve, that is, the core material In addition to being rotatable around the material axis, a structure is adopted in which it is tightly attached between the pressing holding portion provided on the second core material side sleeve and the movement restricting member screwed to the second core material side sleeve. As a result, when the first bag side sleeve of the first fixing member is turned around the material axis of the core material together with the bag body and screwed to the first core material side sleeve, the second fixing member side is There is no influence, and when the second bag side sleeve is fixed to the second core side sleeve, no influence is given from the side of the first fixing member that has already been fixed. Absent.

  In addition, the first bag-side sleeve is screw-engaged with the first core material-side sleeve, and the second bag-side sleeve is contacted by the movement limiting member screwed into the second core material-side sleeve. Since the movement to the side opposite to the side where the bag body is disposed is limited by the contact action, there is no possibility that the grout material leaks even if the internal pressure rises due to the grout material injection.

  In addition, the first bag-side sleeve is screw-engaged with the first core-side sleeve, and the second bag-side sleeve is pressed against the pressing holding portion protruding from the second core-side sleeve. The contact action prevents reverse movement to the side where the bag body is disposed, in other words, return, so that leakage of the grout material before and after the start of pouring of the grout material can be prevented.

  As described above, the first bag-side sleeve is restricted from moving or shifting to the side opposite to the side on which the bag body is disposed by the screw engagement with the first core-side sleeve. If a movement restricting portion for restricting the movement of the first bag-side sleeve is provided on the first core-side sleeve, the movement of the first bag-side sleeve can be prevented more reliably.

[Common to all inventions]
In each of the above-described inventions, the caulking member, the first caulking member, or the second caulking member is made of, for example, stainless steel or aluminum, and includes a bag side sleeve, a first bag side sleeve, or a second bag side sleeve. It is possible to form a sleeve-like one having an inner diameter larger than the outer diameter, and the peripheral edge of the bag main body along the outer peripheral surface of the bag-side sleeve, the first bag-side sleeve, or the second bag-side sleeve. For example, it is bent into a bowl shape, abuts on each bag-side sleeve, and covers the same so as to be coaxial with each bag-side sleeve. It can be tightly fitted between the sleeve, the first bag-side sleeve, or the second bag-side sleeve.

  Here, if an annular member surrounding the edge of the end of the bag body is provided on the bag body side of the fixing member, the first fixing member or the second fixing member, the bag body accompanying the grout material injection is provided. Since the expansion can be suppressed on the bag body side of the fixing member, the first fixing member, or the second fixing member, a force for expanding the caulking member, the first caulking member, or the second caulking member. As a result, the peripheral edge of the bag body can be more securely narrowed between the bag-side sleeve, the first bag-side sleeve, and the second bag-side sleeve.

  How to fix the core material side sleeve, the first core material side sleeve or the second core material side sleeve to the core material is arbitrary. For example, the gap between them and the core material is filled with an adhesive. Also, insert a wedge between them, for example, four screws every 90 ° or three screws so that the tip is screwed into the peripheral surface of the core from the outer peripheral surface in the direction perpendicular to the material axis. For example, the core material side sleeve, the first core material side sleeve, or the first core may be used as a specific configuration for fixing with an adhesive. The core material side sleeve, the first core material side sleeve, or the second core material side sleeve is provided with an adhesive filling hole that allows the outer peripheral surface side and the inner peripheral surface side of the two core material side sleeves to communicate with each other. A configuration can be employed.

  Each of the above-described inventions can be applied to both the case where the grout injection pipe for injecting the grout material into the ground reinforcement bag is also used as the core material and the case where the grout injection pipe is individually provided. Is an internal space of the core material side sleeve, the first core material side sleeve, or the second core material side sleeve, and the core material side sleeve, the first core material side sleeve, or the second core. Two insertion holes parallel to the material axis of the material side sleeve and parallel to each other are provided, one of which is a core material insertion hole through which the core material is inserted, and the other is injected into the inner space of the bag body. What is necessary is just to make it a pipe insertion hole into which the grout injection pipe to be inserted is inserted.

  Moreover, when providing a core material and a grout injection pipe separately, it is possible to make a core material especially a strand from PC steel.

  Here, a core material covering cap is provided that covers a core exposed sleeve extending from the core material side sleeve, the first core material side sleeve, or the second core material side sleeve, of the PC steel strand. If it is set as the structure, it can prevent beforehand that a grout material leaks from the clearance gap between wires from PC steel.

It is a figure of the bag 1 for natural ground reinforcement concerning 1st Embodiment, (a) is a general view, (b) is a layout. It is an assembly drawing of the bag body 1 for ground reinforcement similarly concerning 1st Embodiment, (a) is the fixing member 6a attached to the end of the bag main body 3, and the core material comprised so that attachment or detachment was possible with respect to this fixing member FIG. 4B is an assembly diagram of the side sleeve 11a, and FIG. 4B is an assembly diagram of a fixing member 6b attached to the other end of the bag body 3 and a core material side sleeve 11b configured to be detachable from the fixing member. The assembly perspective view of the core member side sleeve 11a comprised so that attachment or detachment with respect to the fixing member 6a and this fixing member was possible. The assembly perspective view of the core member side sleeve 11b comprised so that attachment or detachment with respect to the fixing member 6b and this fixing member was possible. The perspective view which showed the manufacture procedure of the fixing member 6b. Sectional drawing which showed the procedure which fixes the fixing members 6a and 6b attached to each end of the bag main body 3 to the core material 2. FIG. The fixing member 6a attached to one end of the bag body 3 is fixed to the core material 2 via the core material side sleeve 11a, and the fixing member 6b attached to the other end is fixed to the core material 2 via the core material side sleeve 11b. Sectional drawing which showed a mode fixed to. It is the figure of the bag 31 for natural ground reinforcement which concerns on 2nd Embodiment, While fixing the fixing member 6a attached to the end of the bag main body 3 to the core material 2 via the core material side sleeve 11a, it is in the other end. Sectional drawing which showed a mode that the attached fixing member 6c was fixed to the core material 2 via the core material side sleeve 11c. It is a figure of the bag 31 for natural ground reinforcement similarly concerning 2nd Embodiment, (a) is the core member side comprised so that attachment or detachment to the fixing member 6a attached to the end of the bag main body 3 and this fixing member was possible. FIG. 4B is an assembly diagram of the sleeve 11a, and FIG. 4B is an assembly diagram of the fixing member 6c attached to the other end of the bag body 3 and the core side sleeve 11c configured to be detachable from the fixing member. Sectional drawing which showed the modification of 2nd Embodiment. It is the figure of the bag 41 for natural ground reinforcement which concerns on 3rd Embodiment, While fixing the fixing member 6a attached to the end of the bag main body 3 to the core material 2 via the core material side sleeve 11a, it is in the other end. Sectional drawing which showed a mode that the attached fixing member 6d was fixed to the core material 2 via the core material side sleeve 11b and the movement limitation member 17. FIG. It is a figure of the bag body 41 for ground reinforcement similarly concerning 3rd Embodiment, (a) is the core member side comprised detachably with respect to the fixing member 6a attached to the end of the bag main body 3, and this fixing member FIG. 4B is an assembly diagram of the sleeve 11a, and FIG. 4B is an assembly diagram of a fixing member 6d attached to the other end of the bag body 3 and a core side sleeve 11b configured to be detachable from the fixing member. Sectional drawing which showed the modification of 3rd Embodiment. Sectional drawing which showed another modification of 3rd Embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a natural ground reinforcing bag according to the present invention will be described with reference to the accompanying drawings.

[First embodiment]
1A and 1B are an overall view and a layout view showing a natural ground reinforcing bag according to the first embodiment. As shown in FIG. 1 (a), a ground body reinforcing bag body 1 according to the present embodiment includes a bag body 3 in which a core material 2 made of a PC steel wire is inserted and arranged in a tube shape, A fixing member 6a as a first fixing member attached to one end of the bag body, and a fixing member 6b as a second fixing member attached to the other end of the bag body, the fixing members 6a, Each end of the bag body 3 is fixed to the core member 2 via 6b, whereby an internal space 4 is formed inside the bag body, as shown in FIG. The grout material is injected into the inner space 4 of the bag body 3 while being inserted into the reinforcing material insertion hole 7 formed in the natural ground 8, thereby expanding the bag body and pushing the reinforcement material insertion hole 7. It can be expanded.

  As shown in FIG. 2, the ground pile reinforcing bag body 1 is inserted with a core material side sleeve 11 a as a first core material side sleeve through which the core material 2 is inserted and fixed to the core material, and the core material 2 is inserted. And a core material side sleeve 11b as a second core material side sleeve fixed to the core material.

  As shown in FIGS. 3A and 3, the fixing member 6 a includes a bag-side sleeve 14 a as a first bag-side sleeve in which the one end peripheral edge 13 a of the bag main body 3 is in contact with the outer peripheral surface, and the one end peripheral edge is a bag. It consists of a caulking member 15a as a first caulking member that is closely attached to the side sleeve 14a.

  Here, on the inner peripheral surface of the bag-side sleeve 14 a, a female screw 16 a that is screwed into a male screw 12 a formed at one end of the core material-side sleeve 11 a is formed. When the bag body expands as the internal pressure of the injected grout material increases, the movement or detachment of the bag-side sleeve 14a along the material axis of the core material 2 is restricted, and the core material 2 before and after the start of the grout injection. The bag-side sleeve 14a is prevented from moving in the opposite direction along the material axis (leftward in FIG. 2A).

  In other words, the male screw 12a of the core-side sleeve 11a and the female screw 16a of the bag-side sleeve 14a have a movement restricting function for restricting the movement of the bag-side sleeve 14a accompanying the increase in the internal pressure of the bag body 3 by their screw engaging action. And the function of preventing the bag-side sleeve 14a from moving in the reverse direction when the internal pressure of the bag body 3 is zero or small.

  The other end of the core side sleeve 11a is provided with a movement restricting portion 19 with which the bag side sleeve 14a abuts, and the male screw 12a of the core side sleeve 11a and the bag side sleeve 14a described above. The movement restriction function by the female screw 16a is further enhanced.

  On the other hand, as shown in FIGS. 2B and 4, the fixing member 6b includes a bag-side sleeve 14b as a second bag-side sleeve in which the other peripheral edge 13b of the bag body 3 is in contact with the outer peripheral surface, and the other. A caulking member 15b as a second caulking member whose end peripheral edge is narrowly attached to the bag side sleeve 14b is formed on the inner peripheral surface of the bag side sleeve 14b at one end of the core side sleeve 11b. When the bag body expands as the internal pressure of the grout material injected into the internal space 4 of the bag body 3 increases, the core material 2 is formed. The movement or detachment of the bag-side sleeve 14b along the axis is restricted, and the bag-side sleeve 14b moves in the opposite direction along the material axis of the core 2 before and after the start of grout injection (right in FIG. 2 (b) Direction).

  Here, the natural ground reinforcing bag 1 includes a movement restricting member 17 that is screwed into a male screw 12b formed on the outer peripheral surface of one end of the core side sleeve 11b, and the male side of the core side sleeve 11b. When the bag body expands with the increase in the internal pressure of the grout material injected into the internal space 4 of the bag body 3 in combination with the screw engaging action of the screw 12b and the female screw 16b of the bag side sleeve 14b, A movement restricting function for restricting the movement or detachment of the bag side sleeve 14b along the material axis of the core material 2 is exhibited, and a pressing holding portion 18 is provided at the other end of the core material side sleeve 11b. By maintaining the pressing state of the bag-side sleeve 14b against the movement restricting member 17 by the pressing holding portion, the core material 2 before and after the start of grout injection is coupled with the above-described screw engagement action. Bag side sleeve 14b along the material axis So as to prevent movement in the opposite direction.

  The movement restricting portion 19 of the core material side sleeve 11a and the pressing holding portion 18 of the core material side sleeve 11b are filled with an adhesive that allows the outer peripheral surface side and the inner peripheral surface side of the core material side sleeve to communicate with each other. Holes 20a and 20b are provided, respectively, and an adhesive such as an epoxy resin can be filled in the gap between the inner peripheral surface of the core material side sleeves 11a and 11b and the peripheral surface of the core material 2 through the adhesive filling holes. It is like that.

  The caulking members 15a and 15b are formed in a sleeve shape made of stainless steel or aluminum having an inner diameter larger than the outer diameter of the bag side sleeves 14a and 14b. If the caulking member 15b is described, as shown in FIG. The other end peripheral edge 13b of the main body 3 is bent in a hook shape along the outer peripheral surface of the bag-side sleeve 14b, is brought into contact with the bag-side sleeve, and is put on the bag-side sleeve 14b so as to be coaxial with the bag-side sleeve 14b. By caulking with a tool, the other peripheral edge 13b of the bag body 3 can be tightly fitted between the bag side sleeve 14b.

  In the natural ground reinforcing bag body 1 according to the present embodiment, the bag-side sleeve 14a is configured such that the inner diameter Da is larger than the outer diameter Db of the core-side sleeve 11b, as can be seen in FIG. The bag side sleeve 14a can be advanced along the core material 2 so as to pass through the core material side sleeve while the core material side sleeve 11b is fixed to the core material 2.

  In order to fix each end of the ground pile reinforcing bag 1 according to the present embodiment to the core material 2, first, as shown in FIG. 6, the core material 2 is inserted into the core material side sleeves 11a and 11b, After aligning the core material side sleeve with the position of the end of the bag body when the bag body 3 is inflated, the inner peripheral surface of the core material side sleeves 11a and 11b and the core through the adhesive filling holes 20a and 20b. The core material side sleeves 11 a and 11 b are fixed to the core material 2 by filling the gap between the peripheral surface of the material 2 with an adhesive such as an epoxy resin.

  Here, the core material side sleeve 11a and the core material side sleeve 11b insert the end portion of the core material 2 into the end portion on the side where the bag body 3 is inserted in the subsequent process, that is, the left end portion in the figure. The core material side sleeve 11a is fixed to the core material 2 so that the core material side sleeve 11a is disposed at a position separated from the insertion end portion, and the core material side sleeve 11b is disposed at a close position.

  On the other hand, the end peripheral edges 13a and 13b of the bag main body 3 are tightly fitted between the bag side sleeves 14a and 14b and the caulking members 15a and 15b, so that the fixing members 6a and 6b are attached to the end portions of the bag main body 3, respectively. Install it in advance.

  Next, the core material 2 is inserted from the insertion end portion into the bag side sleeve 14a of the fixing member 6a attached to one end of the bag body 3, and the bag body 3 is moved along the material axis of the core material 2 in this state. Advance (move to the right in FIG. 6). And it advances to the core material side sleeve 11a so that it may pass through the core material side sleeve 11b fixed to the core material 2 in advance.

  Next, by rotating the bag body 3 around the material axis of the core material 2, the female screw 16a of the bag side sleeve 14a constituting the fixing member 6a is screwed into the male screw 12a of the core material side sleeve 11a and the fixing member The female screw 16b of the bag side sleeve 14b constituting the 6b is screwed into the male screw 12b of the core material side sleeve 11b. In this screwing operation, the distal end of the bag side sleeve 14a is brought into contact with the movement restricting portion 19 provided in the core material side sleeve 11a, and the proximal end of the bag side sleeve 14b, that is, the bag body 3 is moved. The process is performed until the end of the arranged side comes into contact with the press holding part 18 provided in the core material side sleeve 11b.

  Next, the movement restricting member 17 is screwed into the male screw 12b formed at one end of the core side sleeve 11b, and screwed in until it comes into contact with the bag side sleeve 14b.

  FIG. 7 shows that the fixing member 6a attached to one end of the bag body 3 is fixed to the core member 2 via the core member side sleeve 11a, and the fixing member 6b attached to the other end is moved to the core member side sleeve 11b and moved. The state fixed to the core material 2 via the limiting member 17 is shown.

  If each end of the bag body 3 is fixed to the core material 2 in this way, the reinforcing material formed on the natural ground 8 together with the core material 2 as shown in FIG. Then, the grout material is injected into the internal space 4 of the bag body 3 through a grout injection pipe (not shown).

  In this manner, the bag-side sleeve 14a is moved in the reverse direction before and after the start of the grout injection, that is, the bag-side sleeve is returned to the bag body side by the female screw 16a formed on the inner surface of the bag-side sleeve and the male-side sleeve 11a. While being prevented by the screw engaging action with the screw 12a, the reverse movement of the bag side sleeve 14b, that is, the return to the bag main body side is prevented by the press holding portion 18 formed on the core side sleeve 11b.

  Further, when the grout injection operation proceeds and the internal pressure of the bag body 3 increases, the bag body 3 expands with the increase of the internal pressure, and the fixing members 6a and 6b attached to the respective ends of the bag body. However, in the fixing member 6a, the female screw 16a formed on the inner surface of the bag-side sleeve 14a and the male screw 12a of the core-side sleeve 11a are intended to move to the side opposite to the side where the bag body 3 is disposed. The movement of the bag-side sleeve 14a is restricted by the screw engagement action of the screw and the cooperative action of the movement restricting portion 19 provided on the core-side sleeve, and the fixing member 6b has an inner surface of the bag-side sleeve 14b. The movement of the bag-side sleeve 14b is caused by the screw engaging action of the formed female screw 16b and the male screw 12b of the core material side sleeve 11b and the cooperative action of the movement restricting member 17 screwed to the core material side sleeve. It is limited.

  As described above, according to the ground pile reinforcing bag body 1 according to the present embodiment, the core member 2 having a high rigidity and a long overall length is provided for the work of attaching the fixing members 6a and 6b to each end portion of the bag body 3. The work itself can be completed in a short amount of time because it is not necessary to arrange the core, and the work itself of fixing each end portion of the bag body 3 to the core material 2 is performed by attaching the core material side sleeves 11a and 11b to the core material 2, respectively. It is sufficient that the bag-side sleeves 14a and 14b are respectively attached to the core-side sleeves 11a and 11b.

  Further, by setting the inner diameter Da of the bag side sleeve 14a to be larger than the outer diameter Db of the core material side sleeve 11b, the bag side sleeve 14a is moved along the core material 2 so as to pass over the core material side sleeve 11b. The core material side sleeves 11a and 11b can be fixed to the core material 2 in advance.

  Therefore, the attaching operation of the fixing members 6a and 6b to the bag body 3 and the fixing operation of the core material side sleeves 11a and 11b to the core material 2 can be simultaneously performed, and the cores of the core material side sleeves 11a and 11b are allowed to proceed simultaneously. After all the fixing work to the material 2 is completed, it becomes possible to attach the bag side sleeves 14a, 14b of the fixing members 6a, 6b to the core material side sleeves 11a, 11b, and thus the core having high rigidity and troublesome handling. Compared to the conventional case in which the peripheral edge of the bag body 3 is bent in a bowl shape with respect to the material 2 and fixed with a wire or a binding band, the leakage of the grout material due to an increase in internal pressure can be prevented reliably. The overall workability when fixing each end to the core material 2 is also greatly improved.

  Further, according to the ground pile reinforcing bag body 1 according to the present embodiment, the bag side sleeve 14a is caused by the screw engaging action with the core material side sleeve 11a and the movement restricting portion 19 provided in the core material side sleeve 11a. Due to the two cooperating actions of the abutting action, the bag side sleeve 14b has two actions of the screw engaging action with the core side sleeve 11b and the abutting action by the movement restricting member 17 screwed to the core side sleeve 11b. Because of the cooperative action, the movement to the side opposite to the side where the bag body 3 is disposed is limited. Therefore, there is no possibility that the grout material leaks even if the internal pressure increases due to the grout material injection, and the bag side sleeve 14a. The bag-side sleeve 14b is brought into contact with the screw engaging action with the core material side sleeve 11b and the pressing holding portion 18 protruding from the core material side sleeve 11b by the screw engaging action with the core material side sleeve 11a. The two collaborative actions of the abutting action prevent reverse movement to the side where the bag body 3 is arranged, in other words, so-called return, thus preventing leakage of the grout material before and after the start of the grout material injection. can do.

  In addition, according to the ground pile reinforcing bag body 1 according to the present embodiment, the gap between the inner peripheral surface of the core material side sleeves 11a and 11b and the peripheral surface of the core material 2 through the adhesive filling holes 20a and 20b. Since it is configured to be filled with an adhesive such as an epoxy resin, the core material side sleeves 11a and 11b can be firmly fixed to the core material 2 made of PC steel wire, and as a result, the core Reinforcement of natural ground that fully exhibits the tensile strength characteristics of the material 2 is possible.

  In the present embodiment, the movement restricting portion 19 is provided in the core side sleeve 11a. However, the screw engagement between the female screw 16a formed on the inner surface of the bag side sleeve 14a and the male screw 12a of the core side sleeve 11a. If the movement of the bag-side sleeve 14a can be sufficiently restricted, the movement restricting portion 19 may be omitted. In this case, the bag side sleeve 14a may be appropriately positioned on the core material side sleeve 11a using a waterproof tape or the like.

  Similarly, the movement restricting member 17 is screwed into the core side sleeve 11b. However, the screw engagement between the female screw 16b formed on the inner surface of the bag side sleeve 14b and the male screw 12b of the core side sleeve 11b. If the movement of the bag-side sleeve 14b can be sufficiently limited, the movement limiting member 17 may be omitted. Even in this case, the bag-side sleeve 14b may be appropriately positioned on the core material-side sleeve 11b using a waterproof tape or the like.

  In the present embodiment, a fixing member 6a as a first fixing member is attached to one end of the bag body 3 to fix the fixing member to the core material 2 via the core material side sleeve 11a. A fixing member 6b as a second fixing member is attached to the other end, and the fixing member is fixed to the core material 2 via the core material side sleeve 11b. However, both ends of the bag body 3 are not necessarily configured as described above. It does not have to be fixed to the core material 2.

  That is, the fixing member 6a is attached to one end of the bag body 3 and the fixing member is fixed to the core material 2 via the core material side sleeve 11a, while the other end of the bag body 3 is subjected to other methods such as a wire or You may make it fix to the core material 2 by the conventional method using a restraint band.

  In this case, the fixing member 6a, the bag side sleeve 14a, the caulking member 15a, and the core material side sleeve 11a are respectively the fixing member, the bag side sleeve, the caulking member, and the core material side sleeve according to the first invention.

  In the case of such a modification, the bag-side sleeve 14a is not limited with respect to the inner diameter.

  In addition, the fixing member 6b is attached to the other end of the bag body 3 and the fixing member is fixed to the core material 2 via the core material side sleeve 11b. You may make it fix to the core material 2 by the conventional method using a restraint band.

  In this case, the fixing member 6b, the bag side sleeve 14b, the caulking member 15b, and the core material side sleeve 11b are respectively the fixing member, the bag side sleeve, the caulking member, and the core material side sleeve according to the first invention.

[Second Embodiment]
Next, the ground reinforcement bag according to the second embodiment will be described. Note that components that are substantially the same as those of the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIGS. 8 and 9, the ground pile reinforcing bag body 31 according to the second embodiment is a bag body 3 and a first core material side sleeve through which the core material 2 is inserted and fixed to the core material. Core material side sleeve 11 a, core material side sleeve 11 b as a second core material side sleeve through which the core material 2 is inserted and fixed to the core material, and a first fixing attached to one end of the bag body 3. A fixing member 6a as a member and a fixing member 6c as a second fixing member attached to the other end of the bag body 3 are provided, and the fixing members 6a and 6c and the core side sleeves 11a and 11c are interposed. Each end of the bag body 3 is fixed to the core member 2 so that an internal space 4 is formed inside the bag body. As described with reference to FIG. The inner space 4 of the bag body 3 in a state of being inserted into the reinforcing material insertion hole 7 formed in the mountain 8 By injecting grout, so that can be expanded down the reinforcing member insertion hole 7 by expanding the bag body.

  As shown in FIG. 9B, the fixing member 6c is similar to the fixing member 6b, the bag-side sleeve 14c as a second bag-side sleeve with which the other peripheral edge 13b of the bag body 3 is brought into contact with the outer peripheral surface, and the bag-side sleeve 14c. It comprises a caulking member 15c as a second caulking member, the other end periphery of which is narrowly attached to the bag side sleeve 14c, and is formed on one end of the core side sleeve 11c on the inner peripheral surface of the bag side sleeve 14c. A female screw 16c is formed to be screwed to the male screw 12c, and when the bag body expands as the internal pressure of the grout material injected into the inner space 4 of the bag body 3 increases, the core material 2 The movement or detachment of the bag-side sleeve 14c along the material axis is restricted, and the bag-side sleeve 14c is prevented from moving in the reverse direction along the material axis of the core 2 before and after the start of grout injection. Yes.

  Further, the other end of the core side sleeve 11c is provided with a movement restricting portion 19 with which the bag side sleeve 14c is brought into contact, and the male screw 12c of the core side sleeve 11c and the bag side sleeve 14c described above. The movement limiting function by the female screw 16c is further enhanced.

  Here, while the male screw 12a of the core material side sleeve 11a and the female screw 16a of the bag side sleeve 14a are right screws, the male screw 12c formed on the outer peripheral surface of the core material side sleeve 11c and screwed thereto. Thus, the female screw 16c formed on the inner surface of the bag-side sleeve 14c is a left-hand screw.

  The movement restricting portion 19 of the core material side sleeve 11c is provided with an adhesive filling hole 20c that allows the outer peripheral surface side and the inner peripheral surface side of the core material side sleeve to communicate with each other. An adhesive such as an epoxy resin can be filled in the gap between the inner peripheral surface of the core material side sleeve 11c and the peripheral surface of the core material 2 through the hole.

  The caulking member 15c has a sleeve shape made of stainless steel or aluminum having an inner diameter larger than the outer diameter of the bag-side sleeve 14c, and, similarly to the caulking member 15b described in FIG. Is folded in a hook shape along the outer peripheral surface of the bag side sleeve 14c, abutted against the bag side sleeve, covered with the bag side sleeve 14c from above, and then caulked with a predetermined tool, The other end periphery 13b of the bag body 3 can be tightly fitted between the bag side sleeve 14c.

  In order to fix each end portion of the ground pile reinforcing bag body 31 according to the present embodiment to the core member 2, first, the end peripheral edges 13a and 13b of the bag body 3 are connected to the bag side sleeves 14a and 14c and the caulking member 15a, The fixing members 6a and 6c are attached to the respective end portions of the bag body 3 by being closely attached to each other.

  Next, the core material side sleeve 11a, the bag body 3, and the core material side sleeve 11c are inserted into the core material 2 in this order so that the bag main body 3 is disposed between the core material side sleeves 11a and 11c.

  Next, after aligning the core side sleeves 11a and 11c with the end positions of the bag body 3 when the bag body 3 is inflated, the core side sleeves 11a and 11c are inserted into the core side sleeves 11a and 11c via the adhesive filling holes 20a and 20c. The core material side sleeves 11 a and 11 c are fixed to the core material 2 by filling the gap between the inner peripheral surface and the peripheral surface of the core material 2 with an adhesive such as epoxy resin.

  When the bag body 3 obstructs the fixing work of the core material side sleeves 11a and 11c, the bag body 3 is contracted along the material axis of the core material 2 so that each end of the bag body 3 is cored. What is necessary is just to evacuate suitably from the material side sleeves 11a and 11c.

  Next, while rotating the bag body 3 about the material axis of the core material 2, the female screw 16a formed on the inner peripheral surface of the bag side sleeve 14a is connected to the male screw 12a formed on the outer peripheral surface of the core side sleeve 11a. And the female screw 16c formed on the inner peripheral surface of the bag side sleeve 14c is screwed into the male screw 12c formed on the outer peripheral surface of the core side sleeve 11c.

  Here, the male screw 12a of the core material side sleeve 11a and the female screw 16a of the bag side sleeve 14a screwed to the male screw 12a are right screws, respectively, whereas the male screw 12c of the core material side sleeve 11c and the female screw 16a of the bag side sleeve 11a are screwed thereto. Since the female screw 16c of the bag-side sleeve 14c is a left-hand screw, by rotating the bag body 3 in a predetermined direction, the bag-side sleeve 14a is screwed into the core material-side sleeve 11a and at the same time, the bag-side sleeve 14c is screwed into the core material side sleeve 11c.

  If each end of the bag body 3 is fixed to the core material 2 in this way, the ground pile reinforcing bag 31 is formed on the natural ground 8 together with the core material 2 as described with reference to FIG. Then, the grout material is injected into the inner space 4 of the bag body 3 through a grout injection pipe (not shown).

  In this manner, the bag-side sleeve 14a is moved in the reverse direction before and after the start of the grout injection, that is, the bag-side sleeve is returned to the bag body side by the female screw 16a formed on the inner surface of the bag-side sleeve and the male-side sleeve 11a. While being prevented by the screw engaging action with the screw 12a, the bag side sleeve 14c is moved in the reverse direction, that is, returned to the bag main body side, with the female screw 16c formed on the inner surface of the bag side sleeve and the core side sleeve. This is prevented by the screw engaging action with the male screw 12c of 11c.

  Further, when the grout injection operation progresses and the internal pressure of the bag body 3 increases, the bag body 3 expands with the increase of the internal pressure, and the fixing members 6a and 6c attached to the respective ends of the bag body. However, in the fixing member 6a, the female screw 16a formed on the inner surface of the bag-side sleeve 14a and the male screw 12a of the core-side sleeve 11a are intended to move to the side opposite to the side where the bag body 3 is disposed. The movement of the bag-side sleeve 14a is restricted by two cooperating actions, namely, the screw engagement action and the contact action by the movement restricting portion 19 provided on the core-side sleeve. The screw engagement action of the female screw 16c formed on the inner surface of the side sleeve 14c and the male screw 12c of the core material side sleeve 11c and the contact action by the movement restricting portion 19 provided in the core material side sleeve 2 Movement of the bag side sleeve 14c is limited by a cooperating action.

  As described above, according to the ground pile reinforcing bag body 31 according to the present embodiment, the core member 2 having a high rigidity and a long overall length is provided for the operation of attaching the fixing members 6a and 6c to the respective end portions of the bag body 3. The work itself can be completed in a short amount of time because there is no need to manage the core, and the work itself of fixing each end portion of the bag body 3 to the core material 2 is performed by attaching the core material side sleeves 11a and 11c to the core material 2, respectively. Then, it is sufficient to attach the bag-side sleeves 14a and 14c to the core material-side sleeves 11a and 11c, respectively.

  Therefore, it is possible to reliably prevent leakage of the grout material due to an increase in internal pressure, as compared with the conventional case where the end periphery of the bag body 3 is bent in a hook shape with respect to the core material 2 which is troublesome to handle, and fixed with a wire or a binding band. Instead, the overall workability when the end portions of the bag body 3 are fixed to the core member 2 is significantly improved.

  Further, according to the ground pile reinforcing bag 31 according to the present embodiment, the bag side sleeve 14a is caused by the screw engaging action with the core material side sleeve 11a and the movement restricting portion 19 provided in the core material side sleeve 11a. Due to the two cooperating actions of the abutting action, the bag side sleeve 14c has two cooperating actions: a screw engaging action with the core material side sleeve 11c and an abutting action by the movement restricting portion 19 provided in the core material side sleeve 11c. Since the movement to the side opposite to the side where the bag body 3 is disposed is limited by the working action, there is no possibility that the grout material leaks even if the internal pressure rises due to the grout material injection, and the bag side sleeve 14a, 14c is prevented from moving backward to the side where the bag body 3 is arranged, that is, returning to the side where the bag body 3 is arranged by the screw engaging action with the core side sleeves 11a and 11c, so that the injection of grout material is started. Leakage of grout can be prevented after.

  Further, according to the ground pile reinforcing bag body 31 according to the present embodiment, the gap between the inner peripheral surface of the core material side sleeves 11a and 11c and the peripheral surface of the core material 2 through the adhesive filling holes 20a and 20c. Since it is configured to be filled with an adhesive such as an epoxy resin, the core material side sleeves 11a and 11c can be firmly fixed to the core material 2 made of PC steel wire, and as a result, the core Reinforcement of natural ground that fully exhibits the tensile strength characteristics of the material 2 is possible.

  In the present embodiment, the movement restricting portion 19 is provided in the core side sleeves 11a and 11c. However, the screw engagement action between the female screw 16a of the bag side sleeve 14a and the male screw 12a of the core side sleeve 11a, or If the movement of the bag-side sleeves 14a, 14c can be sufficiently restricted by the screw engagement between the female screw 16c of the bag-side sleeve 14c and the male screw 12c of the core-side sleeve 11c, One or both may be omitted. In this case, it is preferable to position the bag-side sleeves 14a and 14c on the core-side sleeves 11a and 11c using a waterproof tape or the like.

  Further, instead of the movement restricting portion 19, as shown in FIG. 10, the movement restricting members 17a and 17c are separately provided, and the movement restricting members 17a and 17c are connected to the male screw 12a of the core material side sleeve 11a 'and the core material side sleeve. What is necessary is just to comprise so that it can be screwed respectively to the external thread 12c of 11c '.

  Here, the core side sleeves 11a ′ and 11c ′ have the same configuration as the core side sleeves 11a and 11c except that male screws 12a and 12c are formed at both ends. The configuration is the same as that of the movement limiting member 17 except that the movement limiting member 17c is compatible with a left-hand thread.

[Third embodiment]
Next, the ground reinforcement bag according to the third embodiment will be described. Note that components that are substantially the same as those of the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIGS. 11 and 12, the ground pile reinforcing bag body 41 according to the third embodiment is a bag body 3 and a first core material side sleeve through which the core material 2 is inserted and fixed to the core material. Core material side sleeve 11 a, core material side sleeve 11 b as a second core material side sleeve through which the core material 2 is inserted and fixed to the core material, and a first fixing attached to one end of the bag body 3. A fixing member 6a as a member and a fixing member 6d as a second fixing member attached to the other end of the bag body 3 are provided, and the fixing members 6a and 6d and the core side sleeves 11a and 11b are interposed. Each end of the bag body 3 is fixed to the core member 2 so that an internal space 4 is formed inside the bag body. As described with reference to FIG. The inside of the bag body 3 is inserted into the reinforcing material insertion hole 7 formed in the mountain 8. By injecting grout into 4, so that can be expanded down the reinforcing member insertion hole 7 by expanding the bag body.

  The fixing member 6d is closely attached between a bag side sleeve 14d as a second bag side sleeve in which the other end peripheral edge 13b of the bag main body 3 is in contact with the outer peripheral surface and the other end peripheral edge between the bag side sleeve 14d. The bag side sleeve 14d is loosely fitted to the core side sleeve 11b.

  Here, the natural ground reinforcing bag body 41 includes a movement restricting member 17 that is screwed into a male screw 12 b formed on the outer peripheral surface of one end of the core material side sleeve 11 b, and the inner space 4 of the bag body 3. When the bag body expands as the internal pressure of the grout material injected into the bag expands, it exerts a movement limiting function that limits the movement or detachment of the bag side sleeve 14d along the material axis of the core material 2. In addition, a pressing holding portion 18 is provided at the other end of the core side sleeve 11b, and the pressing state of the bag side sleeve 14d against the movement restricting member 17 is maintained by the pressing holding portion. The bag-side sleeve 14d is prevented from moving in the reverse direction along the material axis of the core material 2 before and after the start of injection.

  The movement restricting portion 19 of the core material side sleeve 11a and the pressing holding portion 18 of the core material side sleeve 11b are filled with an adhesive that allows the outer peripheral surface side and the inner peripheral surface side of the core material side sleeve to communicate with each other. Holes 20a and 20b are provided, respectively, and an adhesive such as an epoxy resin can be filled in the gap between the inner peripheral surface of the core material side sleeves 11a and 11b and the peripheral surface of the core material 2 through the adhesive filling holes. It is like that.

  The caulking members 15a and 15d are formed in a sleeve shape made of stainless steel or aluminum having an inner diameter larger than the outer diameter of the bag-side sleeves 14a and 14d, and like the caulking member 15b described in FIG. The other peripheral edge 13b is bent in a hook shape along the outer peripheral surface of the bag-side sleeve 14d, is brought into contact with the bag-side sleeve, and is placed so as to be coaxial with the bag-side sleeve 14d. By crimping, the other end periphery 13b of the bag body 3 can be tightly attached to the bag side sleeve 14d.

  In the natural ground reinforcing bag body 41 according to this embodiment, the bag-side sleeve 14a is configured such that the inner diameter Da of the bag-side sleeve 14a is larger than the outer diameter Db of the core-material-side sleeve 11b. The bag side sleeve 14a can be advanced along the core material 2 so as to pass through the core material side sleeve while being fixed to the core material 2.

  In order to fix each end of the ground pile reinforcing bag body 41 according to the present embodiment to the core material 2, first, the core material 2 is inserted into the core material side sleeves 11a and 11b, and the core material side sleeve is inserted into the bag. After alignment with the end position of the bag body when the main body 3 is inflated, the inner peripheral surface of the core material side sleeves 11a, 11b and the peripheral surface of the core material 2 through the adhesive filling holes 20a, 20b. The core material side sleeves 11 a and 11 b are fixed to the core material 2 by filling the gaps with an adhesive such as an epoxy resin.

  Here, the core material side sleeve 11a and the core material side sleeve 11b are the end portions of the core material 2 where the bag body 3 is inserted in the post-process, and the left end portion in FIG. In addition, the core material side sleeve 11a is fixed to the core material 2 so that the core material side sleeve 11a is disposed at a position separated from the insertion end, and the core material side sleeve 11b is disposed at a close position.

  On the other hand, the fixing members 6a and 6d are attached to the end portions of the bag body 3 by tightly fitting the end peripheral edges 13a and 13b of the bag body 3 between the bag side sleeves 14a and 14d and the caulking members 15a and 15d, respectively. Install it in advance.

  Next, the core material 2 is inserted from the insertion end portion into the bag side sleeve 14a of the fixing member 6a attached to one end of the bag body 3, and the bag body 3 is moved along the material axis of the core material 2 in this state. Advance (move to the right in FIG. 11). And it advances to the core material side sleeve 11a so that it may pass through the core material side sleeve 11b fixed to the core material 2 in advance.

  Next, by rotating the bag body 3 around the material axis of the core material 2, the female screw 16a of the bag side sleeve 14a constituting the fixing member 6a is screwed into the male screw 12a of the core material side sleeve 11a. This screwing operation is performed until the tip of the bag-side sleeve 14a comes into contact with the movement restricting portion 19 provided on the core material-side sleeve 11a.

  Here, while the bag-side sleeve 14a is screwed, the fixing member 6d attached to the other end of the bag body 3 rotates together with the bag body 3. The fixing member 6d The core material 2 is not yet inserted into the bag side sleeve 14d, the core material 2 is inserted to a position spaced from the core material side sleeve 11b, or the core material side sleeve 11b is inserted and the bag side sleeve 14d is inside. What is necessary is just to select suitably from the three states of the state in which the core material side sleeve 11b is loosely fitted and can be rotated around the material axis.

  When the screwing operation of the bag side sleeve 14a is completed, the fixing member 6d is advanced to the core material side sleeve 11b with the core material 2 inserted through the bag side sleeve 14d, and then the inner side of the bag side sleeve 14d. After the bag side sleeve is fitted so that the core material side sleeve 11b is loosely fitted to the core material side sleeve 11b, the movement restricting member 17 is screwed into the male screw 12b formed at one end of the core material side sleeve 11b and the movement is performed. The core member side sleeve until the end on the base end side of the bag side sleeve 14d, that is, the end portion on the side where the bag main body 3 is disposed is brought into contact with the pressing holding portion 18 of the core side sleeve 11b. Screw into the male screw 12b of 11b.

  If each end of the bag body 3 is fixed to the core material 2 in this way, the reinforcing material formed on the natural ground 8 together with the core material 2 as shown in FIG. Then, the grout material is injected into the internal space 4 of the bag body 3 through a grout injection pipe (not shown).

  In this manner, the bag-side sleeve 14a is moved in the reverse direction before and after the start of the grout injection, that is, the bag-side sleeve is returned to the bag body side by the female screw 16a formed on the inner surface of the bag-side sleeve and the male-side sleeve 11a. While being prevented by the screw engaging action with the screw 12a, the reverse movement of the bag side sleeve 14d, that is, the return to the bag main body side is prevented by the press holding portion 18 formed on the core side sleeve 11b.

  Further, when the grout material injection operation proceeds and the internal pressure of the bag body 3 increases, the bag body 3 expands with the increase of the internal pressure, and the fixing members 6a and 6d attached to the ends of the bag body. However, in the fixing member 6a, the female screw 16a formed on the inner surface of the bag-side sleeve 14a and the male screw 12a of the core-side sleeve 11a are intended to move to the side opposite to the side where the bag body 3 is disposed. The movement of the bag-side sleeve 14a is restricted by two cooperative actions, namely, the screw engagement action with the screw and the contact action by the movement restricting portion 19 provided on the core-side sleeve. The movement of the bag-side sleeve 14d is restricted by the contact action of the movement-limiting member 17 screwed on the material-side sleeve 11b.

  As described above, according to the ground pile reinforcing bag body 41 according to the present embodiment, the core member 2 having a high rigidity and a long overall length is provided for the operation of attaching the fixing members 6a and 6d to the respective end portions of the bag body 3. The work itself can be completed in a short amount of time because it is not necessary to arrange the core, and the work itself of fixing each end portion of the bag body 3 to the core material 2 is performed by attaching the core material side sleeves 11a and 11b to the core material 2, respectively. It is sufficient that the bag-side sleeves 14a and 14d are attached to the core-side sleeves 11a and 11b, respectively.

  Further, by setting the inner diameter Da of the bag side sleeve 14a to be larger than the outer diameter Db of the core material side sleeve 11b, the bag side sleeve 14a is moved along the core material 2 so as to pass over the core material side sleeve 11b. The core material side sleeves 11a and 11b can be fixed to the core material 2 in advance.

  Therefore, the attaching operation of the fixing members 6a, 6d to the bag body 3 and the fixing operation of the core material side sleeves 11a, 11b to the core material 2 can be simultaneously performed, and the cores of the core material side sleeves 11a, 11b are allowed to proceed simultaneously. After all the fixing work to the material 2 is completed, the bag side sleeves 14a, 14d of the fixing members 6a, 6d can be attached to the core material side sleeves 11a, 11b, and thus the core is high in rigidity and troublesome to handle. Compared to the conventional case in which the peripheral edge of the bag body 3 is bent in a bowl shape with respect to the material 2 and fixed with a wire or a binding band, the leakage of the grout material due to an increase in internal pressure can be prevented reliably. The overall workability when fixing each end to the core material 2 is also greatly improved.

  Further, according to the ground pile reinforcing bag body 41 according to the present embodiment, the bag-side sleeve 14d is not screwed in the attaching / detaching structure of the bag-side sleeve 14d and the core-material side sleeve 11b of the fixing member 6d, and the bag-side sleeve 14d is connected to the core-material side. The sleeve 11b is loosely fitted, that is, rotatable around the material axis of the core material 2, and the movement holding member 17 screwed into the core material side sleeve and the press holding portion 18 provided on the core material side sleeve 11b. When the bag side sleeve 14a of the fixing member 6a is rotated around the material axis of the core material 2 together with the bag body 3 and screwed to the core material side sleeve 11a, the fixing member 6a is There is no risk of being affected from the side of 6d, and there is also a concern that when the bag side sleeve 14d of the fixing member 6d is fixed to the core material side sleeve 11b, the fixing member 6a side that has already been fixed is affected. Lost .

  Further, according to the ground pile reinforcing bag body 41 according to the present embodiment, the bag side sleeve 14a is caused by the screw engaging action with the core material side sleeve 11a and the movement restricting portion 19 provided in the core material side sleeve 11a. Due to the two cooperating actions of the abutting action, the bag side sleeve 14d is opposite to the side on which the bag main body 3 is disposed by the abutting action of the movement restricting member 17 screwed to the core material side sleeve 11b. Therefore, even if the internal pressure rises due to the injection of the grout material, there is no risk of the grout material leaking out, and the bag-side sleeve 14a is connected to the core-side sleeve 11a by the screw engagement action. 14d is prevented from moving in the reverse direction to the side where the bag body 3 is arranged, that is, returning to the side where the bag body 3 is arranged by the abutting action of the pressing holding portion 18 protruding from the core side sleeve 11b. Leakage of grout in injection before and after the start of can be prevented.

  In addition, according to the ground pile reinforcing bag body 41 according to the present embodiment, the gap between the inner peripheral surface of the core material side sleeves 11a and 11d and the peripheral surface of the core material 2 through the adhesive filling holes 20a and 20b. Since it is configured to be filled with an adhesive such as an epoxy resin, the core material side sleeves 11a and 11b can be firmly fixed to the core material 2 made of PC steel wire, and as a result, the core Reinforcement of natural ground that fully exhibits the tensile strength characteristics of the material 2 is possible.

  In the present embodiment, the movement restricting portion 19 is provided in the core side sleeve 11a. However, the screw engagement between the female screw 16a formed on the inner surface of the bag side sleeve 14a and the male screw 12a of the core side sleeve 11a. If the movement of the bag-side sleeve 14a can be sufficiently restricted, the movement restricting portion 19 may be omitted. In this case, the bag side sleeve 14a may be appropriately positioned on the core material side sleeve 11a using a waterproof tape or the like.

  Although not particularly mentioned in the present embodiment, as shown in FIG. 13, an annular member 81 a that surrounds the bag body 3 on the bag body side of the fixing member 6 a is provided, and on the bag body side of the fixing member 6 d. Alternatively, an annular member 81b that surrounds the bag body 3 may be provided.

  According to such a configuration, when the bag body 3 is inflated by grouting, at least a part of the expansion force is supported by the annular members 81a and 81b, so that a force for expanding the caulking members 15a and 15d is generated. It can suppress acting on this caulking member.

  In addition, the said modification regarding annular member 81a, 81b is applicable not only to this embodiment but 1st Embodiment or 2nd Embodiment.

  Moreover, in this embodiment, although grout material injection | pouring to the internal space 4 formed in the bag main body 3 was not demonstrated in detail, as shown to the fixing structure located in the right side of FIG. 14, the 1st core material As an internal space of the core material side sleeve 91a as a side sleeve, two insertion holes that are parallel to the material axis of the core material side sleeve and parallel to each other are provided, and one of the core materials is inserted into the core material 2 By adopting a configuration in which the insertion hole 92 and the other is a pipe insertion hole 93 through which the grout injection pipe 94 is inserted, the grout material can be injected into the internal space of the bag body 3 via the grout injection pipe.

  Here, as shown in the figure, a fixing member 6a 'is attached to one end periphery 13a of the bag body 3, and a male screw 12a is formed at one end of the core material side sleeve 91a. 'Is a bag-side sleeve 14a' as a first bag-side sleeve in which one end peripheral edge 13a of the bag body 3 is brought into contact with the outer peripheral surface, and the one end peripheral edge is closely attached to the bag-side sleeve 14a '. And a female screw (not shown) that is screwed into the male screw 12a of the core side sleeve 91a is formed on the inner peripheral surface of the bag side sleeve 14a '. is there.

  Therefore, when the bag body expands as the internal pressure of the grout material injected into the internal space 4 of the bag body 3 expands, the movement or deviation of the bag side sleeve 14a 'along the material axis of the core material 2 is restricted. In addition, the bag-side sleeve 14a ′ is prevented from moving in the reverse direction along the material axis of the core material 2 before and after the start of grout injection.

  Further, the other end of the core side sleeve 91a is provided with a movement restricting portion 19 'against which the bag side sleeve 14a' is brought into contact, and the male screw 12a and the bag side sleeve of the core side sleeve 91a described above are provided. The movement limiting function by the female screw 14a 'is further enhanced.

  Hereinafter, the core-side sleeve 91a has substantially the same configuration as the core-side sleeve 11a except that the pipe insertion hole 93 is formed and the inner diameter is thereby increased, and a fixing member. 6a 'has a configuration substantially similar to that of the fixing member 6a except that the diameter of the core material side sleeve 91a is increased by the above-described increase in the diameter of the core side sleeve 91a.

  In addition, the said modification regarding the pipe penetration hole 93 is applicable not only to this embodiment but 1st Embodiment or 2nd Embodiment.

  Further, although not particularly mentioned in the present embodiment, as shown on the left side of FIG. 14, a core material covering cap 95 that covers the exposed end portion of the core material 2 extending from the core material side sleeve 11 d is provided. You may do it.

  The core material covering cap 95 shown in the figure has a bottomed cylindrical shape, and a female screw 96 formed on the inner surface thereof is screwed into a male screw 12d formed on one end of the core material side sleeve 11d. The exposed end portion of the core material 2 can be covered in a watertight manner.

  The core material 2 is formed by twisting a plurality of PC steel wires, and a gap is formed between the PC steel wires. Depending on the viscosity of the grout material and other conditions, the PC steel wires Although there is a concern that the grout material may slightly leak from the gap, according to the above-described modification, it is possible to completely prevent the grout material from leaking even in such a case.

  In addition, the said modification regarding the cap 95 for core material coating | covers is applicable not only to this embodiment but 1st Embodiment or 2nd Embodiment.

  Although not particularly mentioned in the present embodiment, a fixing member 6d is attached to the other end of the bag body 3 to fix the fixing member to the core material 2 via the core material side sleeve 11b. About one end, you may make it fix to the core material 2 by the other method, for example, the conventional method using a number wire or a restraint band.

  In this case, the fixing member 6d, the bag side sleeve 14d, the caulking member 15d, and the core material side sleeve 11b are respectively the fixing member, the bag side sleeve, the caulking member, and the core material side sleeve according to the first invention.

1, 31, 41 Ground body reinforcing bag body 2 Core material 3 Bag body 4 Internal space 6a Fixing member, first fixing member 6b Fixing member, second fixing member 6c Fixing member, second fixing member 6a ′ Fixing Member, first fixing member 11a core material side sleeve, first core material side sleeve 11b core material side sleeve, second core material side sleeve 11c core material side sleeve, second core material side sleeves 12a, 12b male Screw, right screw 12c Male screw, left screw 13a One end peripheral edge 13b of bag main body Other end peripheral edge 14a of bag main body Bag side sleeve, first bag side sleeve 14b Bag side sleeve, second bag side sleeve 14c Bag side sleeve, Second bag side sleeve 14a 'Bag side sleeve, first bag side sleeve 15a Caulking member, first caulking member 15b Caulking member, second caulking member 15c Caulking member, second caulking member 15a' Caulking member, first caulking member 16a, 16b female screw, right screw 16c female screw, left screw 17, 17a, 17c
Movement restricting member 18 Press holding portion 19 Movement restricting portions 20a and 20b Adhesive filling holes 81a and 81b Annular member 92 Core material insertion hole 93 Pipe insertion hole 94 Grout injection pipe 95 Core material covering cap

Claims (15)

In the ground reinforcing bag body which is formed in a tube shape so that the core material can be inserted and arranged, and the end portion is fixed to the core material so that the grout material can be injected into the internal space.
The bag body includes a bag body and a fixing member attached to the end of the bag body, and the fixing member is disposed between the bag side sleeve and the bag side sleeve where the peripheral edge of the end of the bag body is in contact with the outer peripheral surface. And a caulking member for tightly attaching the peripheral edge of the end portion of the bag body, and the bag side sleeve is configured so that the core material can be inserted into the inner side thereof, and the core material is inserted and fixed to the core material. provided with a core member side sleeve being, the bag-side sleeve core material side sleeve so that it can be attached coaxially removably, screwed onto the male screw formed on the outer circumferential surface of the core material side sleeve A natural mountain reinforcing bag having a female screw formed on the inner peripheral surface of the bag-side sleeve. Natural ground reinforcing bag of the movement restricting portion according to claim 1, wherein projecting from said core-side sleeve to limit movement of the bag side sleeve. In the ground reinforcing bag body which is formed in a tube shape so that the core material can be inserted and arranged, and the end portion is fixed to the core material so that the grout material can be injected into the internal space.
The bag body includes a bag body and a fixing member attached to the end of the bag body, and the fixing member is disposed between the bag side sleeve and the bag side sleeve where the peripheral edge of the end of the bag body is in contact with the outer peripheral surface. And a caulking member for tightly attaching the peripheral edge of the end portion of the bag body, and the bag side sleeve is configured so that the core material can be inserted into the inner side thereof, and the core material is inserted and fixed to the core material. provided with a core member side sleeve being, the bag-side sleeve core material side sleeve so that it can be attached coaxially removably, screwed to the male threads formed at one end of the core member side sleeve A ground including a movement restricting member for restricting the movement of the bag side sleeve, and a pressing holding portion for pressing the bag side sleeve on the movement restricting member protruding from the other end of the core side sleeve. Bag for mountain reinforcement. In the ground reinforcing bag body that is formed in a tube shape so that the core material can be inserted and arranged, and each end is fixed to the core material so that grout material can be injected into the internal space,
A bag body;
A first core material side sleeve in which the core material is inserted and fixed to the core material, and an external thread is formed on the outer peripheral surface;
A first caulking member that narrows the peripheral edge of one end of the bag body between the first bag-side sleeve and the first bag-side sleeve, the peripheral edge of the bag body being in contact with the outer peripheral surface; A first fixing member formed by forming on the inner peripheral surface of the first bag-side sleeve a female screw that is screwed to the male screw of the first core-side sleeve;
A second core material side sleeve in which the core material is inserted and fixed to the core material, and an external thread is formed on the outer peripheral surface;
A second bag-side sleeve in which the peripheral edge of the other end of the bag body is in contact with the outer peripheral surface, and a second caulking member that tightly attaches the peripheral edge of the other end of the bag body to the second bag-side sleeve. And a second fixing member formed by forming a female screw to be engaged with a male screw of the second core material side sleeve on the inner peripheral surface of the second bag side sleeve,
Of the end portions of the core material, the side to be inserted into the bag body is an insertion end portion, and the first core material side sleeve and the second core material side sleeve from the insertion end portion. The core material side sleeve arranged at the separated position is the first core material side sleeve, the core material side sleeve arranged at the position close to the insertion end is the second core material side sleeve, and the first 1. A natural mountain reinforcing bag, wherein one bag-side sleeve has an inner diameter larger than an outer diameter of the second core-side sleeve. Of the end portions of the first core side sleeve, a movement limiting portion for restricting the movement of the bag body is provided at an end portion located on the opposite side of the insertion end portion, or at the opposite end portion. 5. The natural ground reinforcing bag according to claim 4, further comprising a movement restricting member that is screwed into the formed male screw and restricts movement of the bag main body. A movement limiting member that is screwed into a male screw formed on an end located on the same side as the insertion end of the second core side sleeve and restricts the movement of the bag body; The ground reinforcing bag body according to claim 4 , wherein a pressing holding portion that presses the second bag side sleeve on the movement restricting member protrudes from the other end of the second core material side sleeve. In the ground reinforcing bag body that is formed in a tube shape so that the core material can be inserted and arranged, and each end is fixed to the core material so that grout material can be injected into the internal space,
A bag body;
A first core material side sleeve in which the core material is inserted and fixed to the core material, and an external thread is formed on the outer peripheral surface;
A first caulking member that narrows the peripheral edge of one end of the bag body between the first bag-side sleeve and the first bag-side sleeve, the peripheral edge of the bag body being in contact with the outer peripheral surface; A first fixing member formed by forming on the inner peripheral surface of the first bag-side sleeve a female screw that is screwed to the male screw of the first core-side sleeve;
A second core material side sleeve in which the core material is inserted and fixed to the core material, and an external thread is formed on the outer peripheral surface;
A second bag-side sleeve in which the peripheral edge of the other end of the bag body is in contact with the outer peripheral surface, and a second caulking member that tightly attaches the peripheral edge of the other end of the bag body to the second bag-side sleeve. And a second fixing member formed by forming a female screw to be engaged with a male screw of the second core material side sleeve on the inner peripheral surface of the second bag side sleeve,
One of the male screw formed on the first core material side sleeve and the male screw formed on the second core material side sleeve, one is a right screw and the other is a left screw. Reinforcing bag. Of the end portion of the first core material side sleeve, a movement restricting portion that restricts the movement of the bag body is provided at the end located on the side opposite to the side where the bag body is disposed, or the end A movement restricting member that is screwed into the male screw formed on the inner surface of the second sleeve to restrict the movement of the bag body, or of the end of the second core side sleeve that is opposite to the side on which the bag body is disposed. A movement restriction member for restricting the movement of the bag body is provided by projecting a movement restriction part for restricting the movement of the bag body at the end located at the end or screwed into a male screw formed at the end. Item 8. A natural mountain reinforcing bag according to Item 7 . In the ground reinforcing bag body that is formed in a tube shape so that the core material can be inserted and arranged, and each end is fixed to the core material so that grout material can be injected into the internal space,
A bag body;
A first core material side sleeve in which the core material is inserted and fixed to the core material, and an external thread is formed on the outer peripheral surface;
A first caulking member that narrows the peripheral edge of one end of the bag body between the first bag-side sleeve and the first bag-side sleeve, the peripheral edge of the bag body being in contact with the outer peripheral surface; A first fixing member formed by forming on the inner peripheral surface of the first bag-side sleeve a female screw that is screwed to the male screw of the first core-side sleeve;
A second core material side sleeve in which the core material is inserted and fixed to the core material, and an external thread is formed on the outer peripheral surface of one end;
A second bag-side sleeve in which the peripheral edge of the other end of the bag body is in contact with the outer peripheral surface, and a second caulking member that tightly attaches the peripheral edge of the other end of the bag body to the second bag-side sleeve. A second fixing member,
Of the end portions of the core material, the side to be inserted into the bag body is an insertion end portion, and among the first core material side sleeve and the second core material side sleeve, the insertion end portion The core material side sleeve arranged at a close position is used as the second core material side sleeve and is screwed into the male screw of the second core material side sleeve so as to limit the movement of the second bag side sleeve. A configured movement restriction member,
A pressing holding portion that presses the second bag-side sleeve on the movement restricting member protrudes from the other end of the second core material-side sleeve, and the inner diameter of the first bag-side sleeve is the second. A natural mountain reinforcing bag, characterized in that it is configured to be larger than the outer diameter of the core side sleeve. A movement restricting portion that restricts the movement of the first bag-side sleeve to the first core-side sleeve using the core-side sleeve arranged at a position separated from the insertion end as the first core-side sleeve. The ground reinforcing bag body according to claim 9, wherein The ground reinforcement according to any one of claims 1 to 10 , further comprising an annular member that surrounds the bag body on the bag body side of the fixing member, the first fixing member, or the second fixing member. Bag body. The core material side sleeve, the first core material side sleeve, or the second core material side sleeve have an adhesive filling hole that allows the outer peripheral surface side and the inner peripheral surface side to communicate with each other. The bag body for reinforcing natural ground according to any one of claims 1 to 11 , wherein the bag body is provided on one of the core material side sleeve or the second core material side sleeve. The core material side sleeve, the first core material side sleeve, or the second core material side as an internal space of the core material side sleeve, the first core material side sleeve, or the second core material side sleeve. A grout that has two insertion holes parallel to the material axis of the sleeve and parallel to each other, one of which is a core material insertion hole through which the core material is inserted, and the other of which is a grout material that is injected into the internal space of the bag body. The bag for reinforcing natural ground according to any one of claims 1 to 12 , which is a pipe insertion hole through which an injection pipe is inserted. The bag for reinforcing natural ground according to any one of claims 1 to 13 , wherein the core material is a strand made of PC steel. Among the core, the core material side sleeve, the first claim 14, further comprising a core material coated cap to be coated on the tip exposed portion extending from the core member side sleeve or the second core member side sleeve A body for reinforcing natural ground.

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