JP2007191871A - Unnecessary matter removing container and unnecessary matter removing device at pile head, and unnecessary matter removing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a removing device which can easily remove unnecessary matter such as concrete milk, fresh concrete, and slime in a liquid state or a gelled state before hardening, at a pile head, and to provide a removing method. <P>SOLUTION: According to the structure of the removing device, a recovery space 12 into which the liquid or gelled unnecessary matter is introduced, is formed in a removing container body 11 of a removing container 10 which is inserted into a space where the unnecessary matter produced at the pile head during construction of a pile foundation, is present. The recovery space 12 has an opening 13 for releasing the interior thereof to the outside, on a bottom side. The container main body has a cover plate 14 rockably fixed to the interior of the recovery space 12, for closing the opening 13 on the side of the recovery space 12. When the removing container 10 is sunk in the unnecessary matter, the unnecessary matter presses the cover plate upward by its inflow pressure to be introduced into the recovery space 12. Thereafter when the removing container is pulled out, the cover plate 14 closes the opening 13 due to the weight of the unnecessary matter, and in this manner the unnecessary matter can be easily removed from the space at the pile head where the unnecessary matter is present. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  In the present invention, when a pile is constructed in pile foundation work, the pile head (in this specification, “pile head” refers to the top and near the top of the pile, “pile head” refers to the inside of the pile head and It is used as a concept that includes the space in the excavation hole on the pile head, and is simply referred to as “pile head” including both. More particularly, the pile foundation with excavation of the ground and the placement of concrete, such as the cast-in-place pile method and the embedded pile method, with regard to the removal device as an element and the method of removing unnecessary materials using the removal container. The present invention relates to a removal container and a removal apparatus for removing unnecessary materials such as cement milk, slime, and ready-mixed ready-mixed concrete generated in construction, and a method for removing the unnecessary materials.

  The cast-in-place pile method is known as an example of a pile foundation method that involves excavating the ground and placing concrete.

  In this cast-in-place pile method, after excavating the ground, a steel bar is inserted and concrete is laid to create a pile in the field. Covering the hole wall with a liner plate or casing tube, or After excavating the ground by excavation using an earth auger or other excavator to the support layer while protecting the hole wall with the pressure of water or stabilizing liquid injected into the hole, the rebar cage is put into this hole. After that, piles are constructed by inserting a trayy pipe into the excavation hole and injecting ready-mixed concrete.

  When constructing such a pile, if concrete is placed in the excavation hole, impurities such as slime remaining in the excavation hole will rise to the top of the concrete due to the difference in specific gravity, and the concrete at the pile head will contain a lot of impurities. .

  Therefore, when placing concrete, so-called “filling” is performed, in which concrete is placed to a position higher than the original position of the pile head, and slime, concrete, etc. at this filling portion are removed as unnecessary items. Things have been done.

  Unnecessary removal of such pile heads is not limited to the construction of piles by the cast-in-place pile method described above, but also by other methods such as pre-built pile method, excavation of the ground and concrete placement. It may also be necessary for pile foundation work with construction.

  As an example, in the existing pile method, the embedding method using a hollow pile has a rooting liquid such as cement milk and a peripheral fixing liquid in the excavation hole formed by excavation using an excavator such as an earth auger. After the injection, a steel or concrete hollow pile is inserted, or after the hollow pile is inserted, a root-setting liquid such as cement milk is injected through the hollow hole of the pile, so And the surrounding ground and hollow pile are integrated.

  Reinforcing bars for joining to the structure constructed on the upper part are attached to the heads of hollow piles buried by such an existing pile construction method. For example, after inserting a lower end portion of a rebar car manufactured in advance into the hollow space of the head, concrete is placed in the hollow portion (see FIG. 13C).

  However, in the prefabricated pile method as described above, cement milk is filled at or beyond the pile head, so there is no space for inserting the joining rebar into the pile head. It is necessary to secure a space for inserting the joining rebar.

  Therefore, the work which removes cement milk, slime, etc. before hardening after hardening which is clogged in the hollow space of a pile head as an unnecessary thing is performed.

  As a general method for removing unnecessary materials from the pile head, after the ready-mixed concrete, cement milk, slime, etc. are hardened, these hardened products can be removed by crushing with a chiseling machine. Or, when these unnecessary materials are still in a soft state before being cured, they are generally removed by hand digging using a scoop or the like.

  As a technique for simplifying the removal of unnecessary materials, the following methods have been proposed in the embedding method using hollow piles.

(1) A hollow pile is inserted into the excavation hole before cement milk is injected, and peeling means made of corrugated paper or the like is temporarily attached to the inner wall of the hollow pile to a predetermined depth of the pile head. After the solidified material locking means is installed in the hollow of the part, cement milk is poured into the hollow pile to the upper end position, and the solidified solid is pulled out together with the solidified material locking means and removed (see Patent Document 1) ).

(2) Before the cement milk on the pile head is hardened, it is added to the part of the cement milk where the processing agent such as high molecular organic acid that reduces the strength after hardening is removed to facilitate removal after hardening. Thing (refer patent document 2).

(3) A method of injecting water into the pile head, delaying the hardening of the cement milk, and removing it during that time (see Patent Document 3).

Prior art document information of the present invention includes the following.
JP 7-189243 A JP-A-11-193524 Japanese Patent Laid-Open No. 5-230831

  In the above-described conventional method for removing unwanted material from the pile head, a large amount of labor and time is spent on the work of removing the concrete before hardening manually or crushing and removing it with a chiseling machine. It is. In particular, since such removal work is performed after the pile is put into operation, it is necessary to incorporate the work time required for this removal into the work period, which contributes to prolonging the foundation work.

  Unnecessary items that have been removed are costly to dispose of, especially for concrete that has been removed after curing, even after being removed from the construction site, it should be removed and discarded after being crushed to a certain size. Therefore, a great deal of labor and cost are spent on the work.

  Furthermore, when crushing concrete with a chiseling machine to remove the concrete, there is a risk of damaging the pile head during the chiseling operation, and if such a breakage occurs, The strength of is reduced. In addition, there is a problem that noise and vibration generated when crushing concrete after or after removal deteriorates the working environment and surrounding environment. This type of work is performed especially in urban areas and residential areas. It has become difficult.

  In the method for removing unnecessary materials disclosed in Patent Document 1, unnecessary concrete can be removed at the same time by removing the solidified material locking means from the pile head. If we evaluate only in terms of removal of things, we cannot say that efforts are being reduced.

  However, in the method described in Patent Document 1, it is limited to the construction method that is performed by the procedure of injecting cement milk after the insertion of the existing pile into the excavation hole, and the insertion procedure of the hollow pile and the injection of cement milk are reversed. In some cases, this method cannot be used, nor can it be used in the cast-in-place pile method.

  Further, since the concrete is removed after the concrete milk is hardened, it is the same as the prior art in that a work such as crushing is required to dispose of the waste as an industrial waste.

  Further, since the solidified material locking means arranged in the hollow pile is extracted in a state of being embedded in the hardened concrete, the removed concrete and the solidified material removing means are separated, and the solidified material locking means is separated. New work is required to recover the waste.

  Furthermore, if the solidified material locking means is to be reused, the work of removing and cleaning the concrete adhering to the surface becomes necessary, which increases labor due to the occurrence of new work.

  In the method described in Patent Document 2 in which a treatment agent that causes a decrease in strength after curing is added, the cured concrete can be easily crushed, but operations such as crushing and removal cannot be omitted.

  Furthermore, in the method described in Patent Document 3, although hardening of cement milk can be delayed by adding water, a new work of processing cement milk that has overflowed to the surroundings due to an increase in the amount of water added. Is required. Moreover, there is no description of how to remove cement milk that has been delayed in hardening, but if this is done manually by a known method, the work effort itself cannot be reduced.

  Therefore, the present invention has been made in order to eliminate the above-mentioned conventional drawbacks, and with a relatively simple configuration, before curing unnecessary materials such as concrete milk, ready-mixed concrete, and slime that do not require pile heads. By providing a removal container that can be easily removed in a liquid or gel state, a removal device that uses this removal container as a constituent element, and a removal method, By incorporating it, it is possible to shorten the work period and to eliminate the need for processing such as crushing at the time of disposal, as in the case of removing unnecessary materials after curing.

In order to achieve the above object, the pile head unnecessary object removal container 10 according to the present invention is provided in an excavation hole defined as a pile head space in which there are unnecessary objects generated in the pile head when the pile foundation is constructed. Or the recovery space which is inserted in the inner and outer periphery of the said pile head of a hollow pile, or is mounted on a pile head edge, is formed so that the said space can be coat | covered, and introduce | transduces the said liquid or gel-like unnecessary material inside 12 and a removal container body 11 having an opening 13 for opening the recovery space on the bottom side,
The opening 13 can be freely opened and closed, for example, provided with a lid plate 14 attached to the collection space 12 that covers the collection space 12 (Claim 1).

  In the unnecessary matter removing container 10 having the above-described configuration, a gripping part and / or a connecting part (joint 19) may be provided at the upper end of the removing container main body 11 (Claim 2), or the gripping part and / or the connecting part. (T-shaped hook 32 in the embodiment) and suspending means 30 that can be attached to and detached from the removal container main body 11 can be provided (Claim 3). A joint connectable to the rod can be provided.

Further, the unnecessary object removing device 1 of the present invention is constituted by the removal container 10 and a discharge assisting means 50 for discharging the unnecessary substance introduced into the recovery space 12 of the removal container 10 from the removal container 10. With
The discharge assisting means 50 engages with the base plate 55 on which the removal container 10 can be placed, and the cover plate 14 of the removal container 10 when the removal container 10 is placed on the base 55, Preferably, an engagement protrusion 56 is provided to push up the lid plate 14 into the collection space 12 (Claim 4).

  In the unnecessary object removing device 1 having the above-described configuration, the discharge assisting unit 50 further includes positioning protrusions 57a to 57d for restricting the placement position of the removal container 10 on the base 55. (Claim 5).

  Furthermore, it has an outer shape that is placed on the pile head during the construction of the pile foundation and that can be fitted to the outer surface close to the inner surface of the space where the unnecessary matter generated in the pile head exists, and the removal container is formed on the inner surface. When the main body 11 includes a cylindrical sheet pile 60 that can be removably inserted, it is suitable for a case where the height of the excavation hole of the pile head is high, a case where the excavation hole is weak, and a case where spring water is discharged from the excavation hole. (Claim 6).

  If detachable lids 67 and 68 are provided on the upper and / or lower parts of the cylindrical sheet pile 60, it is possible to prevent the pile head from being damaged by the root cutting operation.

  In addition, the pile head unnecessary material removal method according to the present invention is a method for removing a hollow or hollow hole defined as a pile head space where liquid or gel-like unnecessary materials are generated in the pile head when the pile foundation is constructed. It is inserted into the inner and outer peripheries of the pile head of the pile, or the collection space 12 is placed on the edge of the pile head to cover the space of the pile head, and the cover plate 14 at the bottom of the collection space is Opening with an unnecessary object, introducing the unnecessary object into the recovery space 12, removing the recovery space 12 from the space of the pile head, covering the opening 13, and removing the unnecessary space in the recovery space 12 An object is removed from the space of the pile head (claim 8).

In the method for removing unwanted parts from the pile head, the above-described discharge assisting means 50 having a base 55 on which the removal container 10 is placed and an engaging protrusion 56 protruding from the base 55 is prepared. And
By placing the removal container 10 extracted from the space where the unnecessary objects exist on the position where the engagement protrusion 56 of the base 55 is formed, the cover plate of the removal container 10 is formed by the engagement protrusion 56. It is also possible to push up 14 to open the opening 13 so as to discharge the collected unnecessary matter (claim 9).

  The removal container main body 11 is fitted in the space of the pile head, the opening 13 is opened, and the unnecessary objects are removed by the step of discharging the collected unnecessary objects. The method includes a step of placing a pile head body that covers the pile head (claim 10).

  By placing the cylindrical sheet pile 60 in the space of the pile head, fitting the removal container main body 11 in the cylindrical sheet pile 60, opening the opening, and discharging the collected unnecessary matter, the unnecessary After removing the object, the upper and lower openings of the cylindrical sheet pile 60 are covered, and the cylindrical sheet pile 60 is again placed in the pile head recovery space 12, and then the cylindrical sheet pile 60 is moved to the upper and lower lid bodies 67, A step of carrying out and removing together with 68 can be added (claim 11).

  The unnecessary object to be removed by the above method may be cement milk and / or impurities in the hollow space in the pile head of the existing pile (Claim 12), or the pile head of the cast-in-place pile. It may be concrete and / or impurities deposited on top (claim 13).

  With the configuration described above, in the pile head unnecessary object removal container 10 of the present invention, the removal container 10 is provided in a hollow space of, for example, a hollow regulated pile or a predetermined portion of a cast-in-place pile. Unnecessary items such as cement milk, ready-mixed concrete, and slime could be removed by an extremely simple operation of inserting at a depth and then pulling it out.

  In addition, such removal work can be performed not only on hollow prefabricated piles but also on cast-in-place piles, and it is necessary to remove unnecessary materials that involve excavating the ground and placing concrete. It can be widely applied to various pile foundation works.

  A gripping part for gripping when the removal container 10 is moved, a ring for locking a wire or a hook when suspended by a crane, a coupling part for coupling to a screw rod of an excavator, etc. In the removal container 10 provided, it was possible to easily move, suspend, insert into and remove from a space where unnecessary objects existed.

  In particular, the suspending means 30 having the gripping part and the connecting part is formed by another member that can be attached to and detached from the removal container 10, so that the shape of the removal container 10 itself is simple and compact. There is an advantage that a plurality of removal containers 10 can be stacked and stored.

  In addition, when a plurality of removal containers 10 are continuously moved, once the suspending means 30 is attached to a wire, a hook, or the like, each detachment container 10 can be attached to or detached from the removal container 10 by attaching or detaching the suspending means 30 to each individual container. A work of attaching a wire or the like to the removal container 10 is not necessary, and workability is improved.

  Furthermore, in the unnecessary matter removing apparatus 1 of the present invention configured by combining the removal container 10 with the discharge assisting means 50, the unnecessary matter collected in the removal container 10 is placed on the discharge assisting means 50. Only by placing it at a predetermined position, it was possible to discharge the waste collected in the removal container 10 very easily.

  Therefore, for example, by disposing the discharge assisting means 50 at the waste disposal position, the waste collected in the removal container 10 can be easily discharged to the disposal position. By arranging the auxiliary means 50 in the truck bed or other container or on the container, it is easy to collect the collected unnecessary items in one place.

  It should be noted that raw concrete, cement milk, slime, etc., which are removed from the pile head, which have been removed by the above-described removal container 10, removal device 1, and removal method, are all removed before curing. In addition, there is no need to crush at the time of disposal, and therefore there is no problem of pile strength reduction or noise caused by breakage of the pile head that occurs when crushing with a chiseling machine or the like.

  Furthermore, since the recovered waste is in a liquid or gel state before curing, it can be easily diluted by adding water, etc., and after such dilution, either directly or as needed. It is also advantageous in terms of disposal costs, such as being able to be discarded as wastewater after being subjected to predetermined treatment.

  Next, embodiments of the present invention will be described below with reference to the accompanying drawings.

[Removal container]
1-3, 10 is the removal container of this invention, and this removal container 10 is the said pile of the excavation hole or hollow pile defined as the space of the pile head in which the unnecessary thing in a pile head exists. It has a removal container main body 11 (11a, 11b, 11c) which is inserted into the inner and outer periphery of the head or placed on the edge of the pile head and formed to cover the space.

  Here, as an example of the space where unnecessary objects exist, when the target pile is constructed by the cast-in-place pile method, it is the upper space of the part that becomes the pile head, which is explained in the prior art. In this case, the part where “concave” concrete, etc. is present falls under this space, and in the case of a pile foundation constructed by an existing pile method using hollow piles, it is connected from the head of the hollow pile. A hollow portion or the like having a predetermined depth necessary for inserting a reinforcing bar or the like corresponds to this space.

  The removal container 10 shown in FIGS. 1 to 3 is configured for an existing pile method using a hollow pile, and here, the diameter that allows the removal container body 11 to be inserted into the hollow space of the hollow pile. It is formed in a cylindrical shape.

  However, the diameter or shape of the removal container main body 11 portion of the removal container 10 is not limited to a shape that can be inserted into the hollow space or a cylindrical shape as shown in the figure. Corresponding to the shape of the pile, it can be formed in various shapes.

  In the removal container main body 11 of the removal container 10, a collection space 12 is formed for collecting unnecessary items to be removed as shown in FIG. 2, and unnecessary items are disposed on the bottom side of the collection space 12. Is formed in the removal container main body 11 and a cover plate 14 for covering the opening 13 from the inside is provided (see FIGS. 2 and 3).

  The opening 13 described above should be a position where a liquid or gel-like unnecessary object can be introduced when the removal container 10 is inserted into a space where there is an unnecessary object on the pile head so as to cover the space from the bottom side. In this embodiment, the opening is formed on the bottom surface of the removal container main body 11 formed in a bottomed cylindrical shape.

  The lid plate 14 has a size capable of closing the opening 13 and is swingably fixed in the recovery space 12 so that the opening 13 can be opened by the inflow pressure of the unnecessary material. In the illustrated embodiment, one end is fixed to the bottom plate of the removal container main body 11 by a hinge 15, and when the opening 13 is closed, the cover plate 14 covers the opening 13 from the inside. In addition to closing, it swings about the hinge 15 as a fulcrum, so that it rises on the bottom plate and opens the opening 13.

  In the illustrated embodiment, the cover plate 14 has a single-open configuration, but for example, two cover plates may be attached so as to be a so-called “double door”, and as described above, Any configuration may be used as long as the opening 13 can be closed and the opening 13 can be opened by the inflow pressure of an unnecessary substance flowing into the recovery space 12.

  In FIG. 2, S is a stopper, and when the cover plate 14 is opened, the swing range of the cover plate 14 is restricted so that the cover plate 14 has an opening angle of less than 90 degrees.

  For example, in the embodiment shown in FIG. 2, when the opening angle of the lid plate 14 exceeds 90 degrees and the tip (free end) swings until it contacts the inner wall of the removal container body 11, the lid plate 14 is stabilized at this position. However, as shown in FIG. 2, the opening angle of the cover plate 14 is less than 90 degrees by the stopper S (85 degrees in this embodiment). ), The cover plate 14 is surely moved to the opening 13 side by its own weight when released from the pressure at the time of introduction of unnecessary objects, or by the weight of unnecessary objects when extracted from the hollow space of the hollow pile. It falls down and closes the opening 13.

  The recovery space 12 in the removal container main body 11 can discharge the air in the recovery space 12 according to the introduction amount of the unnecessary material when the unnecessary material is introduced into the removal container main body 11. In this embodiment, the removal container body 11 is formed of a cylindrical body, and the upper end of the removal container body 11 that is the cylindrical body is opened.

  At the upper end of the removal container removal container main body 11 configured as described above, a connecting portion 19 for allowing the removal container 10 to be suspended is provided.

  In the present embodiment, a support member 21 is provided between the inner periphery of the removal container body 11 in the upper end opening of the removal container body 11 which is a cylindrical body. 19 is provided.

  In the embodiment of FIGS. 1 and 2, a first H-shaped steel 21 a that spans the inner periphery of the upper opening of the removal container main body 11 in the diameter direction, and a center in the length direction of the first H-shaped steel 21 a. The support member 21 is formed by the second and third H-shaped steels 21b and 21c spanned between the portion and the inner periphery of the removal container body 11 so as to be orthogonal to each other in plan view (see FIG. 1). The upper end of the removal container main body 11 can be reinforced and the connecting portion 19 can be attached without closing the upper end opening of the removal container main body 11.

  The above-described connecting portion 19 is provided at the central portion of the support member 21 configured as described above. In this embodiment, the connecting portion 19 is used as a joint portion of a screw rod of an excavator. Hexagonal column joint (male) is fixed.

  By providing the connecting portion 19 in this way, the connecting portion 19 is inserted into the joint (female) provided at the tip of the screw rod, and the pin hole provided in the joint (female) provided on the screw rod The removal container 10 can be easily attached to the tip of the screw rod by inserting a locking pin into the pin hole provided in the connector 19 together.

  In addition, the structure of the removal container 10 is not limited to the structure demonstrated with reference to FIGS. 1-3, A various change is possible. The example of a change of such a removal container 10 is demonstrated with reference to FIG.4 and FIG.5.

  In the removal container 10 shown in FIGS. 4 and 5, the configuration of the lower end portion is the same as the structure of the removal container 10 described with reference to FIGS. 1 to 3, but in the embodiment shown in FIGS. 4 and 5, 1-3, the removal container main body 11 formed of a cylindrical body has a shape in which the height direction is further extended by a rectangular plate 11b and a ring-shaped member 11c.

  In the illustrated embodiment, the lower half of the removal container main body 11 is constituted by the cylindrical body 11a, and the upper half of the removal container 10 is equally spaced in the circumferential direction from the upper edge of the cylindrical body 11a. 4 and the ring-shaped member 11c fixed to the intermediate portion in the height direction of the rectangular plate 11b, the side surface of the upper portion of the removal container body 11 communicates with the recovery space. The rectangular window 16 is formed, and the air in the collection space 12 can be discharged through the window 16.

  However, the configuration that allows the air in the collection space 12 to be discharged in this way is not limited to the configuration of the illustrated embodiment. For example, the entire removal container main body 11 is configured by a cylindrical member, and a hole is formed in the upper side surface. Alternatively, the removal container main body 11 may not be provided with a window, and the upper end of the removal container main body 11 may be formed like the removal container 10 described with reference to FIGS. In the removal container 10 shown in FIGS. 4 and 5, an opening communicating with the inside of the collection space 12 may be provided in the top plate 17 described later.

  In the upper end of the removal container main body 11 configured as described above, in the illustrated embodiment, a circular top plate 17 is attached to the upper end of the rectangular plate 11b described above. The top plate 17 has a diameter larger than that of the removal container main body 11 and protrudes in a flange shape from the upper end edge of the removal container main body 11 in the outer peripheral direction.

  Thus, when the removal container 10 is inserted so as to cover the space from the pile head of the hollow pile by projecting the peripheral edge of the top plate 17 in a flange shape in the outer peripheral direction of the removal container main body 11, The protruding portion of the plate 17 is locked to the upper end of the hollow pile, for example, and is prevented from entering the hollow pile completely.

  The top plate 17 is gripped when a worker carries the ring, such as a ring for attaching a wire when the removal container 10 is suspended, a joint for connecting to a screw rod of an excavator, or the like. A gripping part such as a handle may be attached. However, in this embodiment, a locking rod 18 for attaching and detaching a suspension means 30 described later, which can suspend the removal container 10, is fixed. ing.

  The locking rod 18 is configured by a metal rod having a rectangular cross section in the present embodiment. The metal rod-like member is attached so as to protrude from the peripheral portion of the top plate 17 in the outer peripheral direction. The projecting portion is engaged with a locking groove 33 provided in the suspension means 30 described later, and the suspension means 30 and the removal container 10 are connected.

  In the embodiment shown in FIG. 4, the locking rod 18 is attached to the top plate 17 at two equal angles of 180 degrees. Depending on the size of the removal container 10, the locking rod 18 is attached. May be two or more (for example, three or four), or may be provided at four or more locations.

  As described above, the suspension means 30 including a gripping part such as a handle, a ring for attaching a wire or a hook to the removal container 10, a connecting part such as a joint for connecting a screw rod of an excavator, and the like. By making it detachable, the top surface of the removal container 10 can be made into a flat shape without a protruding portion, and when the plurality of removal containers 10 are stacked and stored, it is convenient and stable. A wire or the like for suspending the removal container 10 is attached to one suspending means 30, and the suspending means 30 is attached to the removal container 10 to be suspended, etc. The operation | work which attaches a wire etc. separately becomes unnecessary.

  The above-described suspending means 30 enables the removal container 10 to be gripped or connected to the removal container 10 by a wire, a screw rod, or the like, so that the removal container 10 can be moved by an operator or a working machine such as a crane. As described above, for example, when the top plate 17 of the removal container 10 is directly provided with a connecting portion such as a ring or a joint, or a gripping portion such as a handle. The suspension means 30 is not necessarily provided.

  In the embodiment of FIG. 1, the suspending means 30 is used by covering the upper end portion of the removal container 10. The suspension means 30 is opened downward to cover the upper end portion of the removal container body 11 from the top plate 17 portion. A cap part 31 and a gripping / connecting part for connecting a hanging wire or the like to the upper end of the cap part 31 are attached to the upper end of the cap part 31. In the illustrated embodiment, Although a T-shaped rod 32 is attached as a gripping / connecting portion, for example, it may be a ring-shaped member, and can be connected to a screw rod as in the embodiment described with reference to FIGS. A joint 19 may be provided.

  Further, a locking groove 33 is formed on the side wall of the cap portion 31 so as to mesh with a protruding portion of the locking rod 18 attached to the top plate 17, and the locking rod 18 is engaged with the locking groove 33. By doing so, the top plate 17 and the suspension means 30 are connected.

  In the present embodiment, the locking groove 33 includes a vertical groove 33a formed upward from the lower end opening edge of the cap portion 31, and a horizontal groove 33b formed in a horizontal direction from the upper end of the vertical groove 33a. The locking grooves 33 are formed in a number corresponding to the locking rods 18 provided in the removal container 10 and corresponding positions.

  When the suspension means 30 configured as described above is disposed on the top plate 17 and is lowered so that the locking rod 18 is fitted in the vertical groove 33a of the locking groove 33, the suspension means 30 The cap part 31 can be put on the top plate 17.

  When the locking rod 18 reaches the upper end of the vertical groove 33a of the locking groove 33, the hanging means 30 is rotated by a predetermined angle, and the locking rod 18 is provided on the hanging means 30. When fitted into the lateral groove 33 b of the groove 33, when the suspension means 30 is lifted, the retaining rod 18 is engaged with the lateral groove 33 b portion of the engagement groove 33 of the suspension means 30. The removal container 10 can be suspended.

  As shown in FIG. 4, a stepped portion 34 for restricting the movement of the locking rod 18 may be formed in the lateral groove 33b portion of the locking groove 33 provided in the suspension means 30.

  In addition, when inserting a ready-made pile into a digging hole, the suspension cap used in order to suspend a ready-made pile has the structure similar to the said suspension means 30, As said suspension means 30, It is good also as what diverts the suspension cap for suspending this ready-made pile.

[Discharge auxiliary means]
6 to 9, 50 is used in combination with the removal container 10 to constitute the removal apparatus 1 of the present invention. This discharge assisting means 50 is an unnecessary object collected in the removal container 10. Assists in discharging.

  The discharge assisting means 50 includes a base 55 on which the removal container 10 can be placed, and an engaging projection 56 erected on the base 55, and the removal container 10 is attached to the base of the discharge assisting means 50. When placed on the table 55, the engaging projection 56 pushes up the cover plate 14 that covers the opening 13 provided at the bottom of the removal container 10, thereby discharging the unnecessary material stored in the removal container 10. Do.

  In the case where a means for facilitating the discharge of the unwanted matter collected in the removal container 10 itself is provided, there is no need to separately provide such a discharge auxiliary means. For example, the cover 14 of the removal container 10 is provided on the cover plate 14. When the removal container is placed on the floor surface or the ground, such as by providing an engaging protrusion that protrudes downward when the opening is covered, the lower end of the engaging protrusion is brought into contact with the ground or the floor surface. The cover plate 14 may be configured to be pushed up to open.

  In the illustrated embodiment, the discharge assisting means 50 is composed of an H-shaped steel, a square pipe, or the like 3 between the upper surfaces of the leg portions 51, 51 formed by arranging two H-shaped steels, square pipes, etc. in parallel. The horizontal members 52, 53, 54 are installed to form the base 55, and the removal container 10 can be placed on the horizontal members 52, 53, 54 of the base 55. The space formed between the horizontal members 53 and 54 in the illustrated example secures a discharge space for unnecessary materials.

  The discharge assisting means 50 is for restricting or guiding the placement position of the removal container 10 with respect to the discharge assisting means 50 so that the engaging projection 56 can accurately push up the lid plate 14 here. In the present embodiment, four restricting pieces 57a to 57d protrude from the upper surface of the base 55, and the bottom portion of the removal container 10 is in a space surrounded by the restricting pieces 57a to 57d. Are arranged (see FIGS. 8 and 9).

  In addition, the member shown with the code | symbol 58 provided in the said base 55 is a suspension ring, and in this embodiment, this suspension ring 58 is attached to the both ends of the length direction of the said leg parts 51 and 51. As shown in FIG. By fixing each to the upper surface, it is possible to attach a wire or the like so that it can be easily suspended and moved.

[Unnecessary removal of pile head]
Next, a method for removing unwanted matter from the pile head using the unwanted matter removing apparatus 1 (10, 50) configured as described above will be described. In the following embodiment, an example will be described in which an unnecessary object is removed from a hollow prefabricated pile. However, an unnecessary object can be removed from a cast-in-place pile in substantially the same manner. is there.

  As explained in the prior art, at the completion of the foundation pile construction, the hollow pile is filled with cement milk, slime, etc. up to the pile head. It is necessary to remove cement milk and slime as unnecessary materials.

  In removing such unnecessary materials, when the concrete milk or slime is still in a liquid or gel state before being hardened, the removal container 10 is inserted into the hollow portion of the pile head from the bottom side. .

  When inserting the removal container 10, the removal container 10 is attached to the tip of the screw rod via the connector 19 so that it can be inserted into the hollow space in the pile head of the hollow pile up to the removal depth of unnecessary materials. To.

  The removal container main body 11 of the removal container 10 is formed in a size that can be inserted into the space of the pile head where unnecessary objects are present, in this embodiment, the head hollow space of the hollow pile. Insert the removal container 10 into the hollow space of the hollow pile from the bottom side of the container 10 and insert it into the hollow space by its own weight or by pushing in by applying human or mechanical external force. Allow to settle.

  As described above, the hollow space of the hollow pile is filled with liquid or gel-like slime or cement milk before hardening, but the slime or cement milk loses its place by the insertion of this removal container 10, The lid 14 covering the opening 13 formed in the bottom plate of the removal container 10 is pushed up and flows into the collection space 12 formed in the removal container 10.

  Since this collection space 12 is opened to the atmosphere by the upper opening of the removal container main body 11, air in the collection space 12 is released according to the inflow amount of slime or cement milk, and is replaced with an unnecessary material. The inflow of unnecessary materials to the inside is performed smoothly.

  In this way, when the removal container 10 is further settled in an unnecessary object and inserted to the required depth in the hollow space of the hollow pile, the unnecessary object to be recovered is introduced into the removal container 10 [Fig. 13 (a)].

  In this way, the removal container 10 is inserted into the hollow space of the hollow pile to a predetermined depth, and the introduction of unnecessary substances to be removed such as slime and cement milk into the recovery space 12 is completed. When the introduction pressure of the object disappears, the cover plate 14 whose swing angle is regulated by the stopper S to be less than 90 degrees (85 degrees in the present embodiment) covers the opening 13 by its own weight. Thereafter, the removal container 10 is extracted from the hollow space of the hollow pile via the screw rod connected to the connecting portion 19 described above.

  By pulling out the removal container 10, the unnecessary material introduced into the recovery space 12 tends to flow out of the recovery space through the opening 13 formed in the bottom plate of the removal container 10. 13 is closed by a cover plate 14 or even if the opening 13 is not completely closed by such a cover plate 14, the cover plate 14 is swung by the weight of an unnecessary object and the opening 13 is closed. Close 13 completely. Accordingly, the unwanted matter introduced into the recovery space 12 of the removal container 10 cannot be returned back into the hollow space of the hollow pile, and is extracted and removed together with the removal container 10 [FIG. (B)].

  For example, when there is a large amount of unwanted material to be removed with respect to the capacity of the collection space 12 of the removal container 10, the removal of the unwanted material at the pile head can be completely removed by one insertion of the removal container. If not, repeat this work to remove the necessary amount of unwanted material from the pile head.

  In this way, in the hollow space of the pile head of the hollow pile from which unnecessary items have been removed, after cement milk has hardened, the lower end of, for example, a reinforcing rod is inserted by a known method. A reinforcing bar is attached in the hollow space of the head [FIG. 13 (c)].

  On the other hand, the removal container 10 extracted from the hollow portion of the hollow pile and collecting unnecessary materials such as slime and cement milk in the collection space 13 is discharged from the removal container 10 and discarded.

  This unnecessary matter may be discharged through the upper opening of the removal container 10 such as by overturning the removal container 10, but in the present embodiment, the bottom portion of the removal container is formed by the discharge assisting means 50. Unnecessary matter is discharged by pushing up the cover plate 14 covering the opening provided in the opening and opening the opening.

  That is, when the removal container 10 that collects unnecessary materials is placed at a predetermined position on the discharge assisting means 50, an engagement protrusion 56 that protrudes from the base 55 of the discharge assisting means 50 is formed on the bottom surface of the removal container. The cover plate 14 that covers the opening 13 is engaged through the formed opening 13 to push the cover plate 14 upward. As a result, the recovered unnecessary matter that is still in the form of a liquid or gel is discharged out of the removal container 10 through the opening 13 [FIG. 13 (d)].

  Thus, the removal container 10 which discharged | emitted the unnecessary material is again conveyed by the pile head of a hollow pile, is inserted in a hollow space, and is used for the same operation | work repeatedly.

  Since unnecessary substances such as slime and cement milk discharged from the removal container 10 as described above are still in a liquid or gel state before being cured, by diluting them with water or the like, or It is also possible to dispose as waste water after performing a predetermined treatment as required.

  Therefore, as compared with the prior art which is removed after these have been cured, it is possible to greatly reduce a great amount of labor, cost and time required for crushing unnecessary materials and transporting them for disposal.

  10 (A) and 10 (B) show the excavation of the pile head when the height of the excavation hole from the pile head to the ground surface is as high as 2 m or more, or when the ground of the excavation hole is soft. It is related with the cylindrical sheet pile 60 suitable for constructions, such as when springing from a hole ground.

  11 to 12, the cylindrical sheet pile 60 has a cylindrical shape having an outer diameter smaller than the inner periphery of the excavation hole, and holds a reinforcing bar or the like between the upper and lower frame bodies 61 and 62 having an L-shaped cross section. The hook 63 is inserted, the screw portions at the upper and lower protruding ends are fixed to the frame bodies 61 and 62 with nuts or the like, the upper and lower frame bodies 61 and 62 are connected, and the guide pieces 64 provided on the upper and lower frame bodies in the opposing direction, respectively. 64, and a cylindrical body 70 such as a metal cylinder or a void tube is fitted and fixed. Reference numeral 65 denotes an insertion portion, which is an annular plate for guiding or holding the insertion into the head of the hollow pile pile projecting from the bottom edge of the lower frame 62 having an outer diameter fitted to the inner periphery of the pile head of the hollow pile. It is a shaped member. In the embodiment of FIG. 10, the void pipe 70 is vertically stacked to increase the overall length of the cylindrical sheet pile 60. For this reason, the holding rod 63 is connected to the upper and lower sides via the joint 71, and the holding rod 63 is annularly disposed at an appropriate position. The upper and lower void pipes 70 are supported above and below the projecting portion 73. Therefore, the overall height or total length of the tubular sheet pile 60 can be arbitrarily set corresponding to the pile head.

  The holding rod 63 is provided at a position where the circumference is equally divided on the inner periphery of the cylindrical body 70 and imparts rigidity to the cylindrical sheet pile 60 against the earth pressure from the outside.

  Place the lower part on the pile head of the hollow pile on the inner surface of the pile head or the excavation hole space (recovery space) of the pile head where unnecessary items generated at the pile head exist when the pile foundation is constructed The cylindrical sheet pile 60 is inserted and fitted, and the removal container 10 is repeatedly inserted into the cylindrical sheet body 70 of the cylindrical sheet pile as necessary, and an unnecessary object is removed from the pile head as described above. The pile sheet pile 60 is removed sequentially, and after the pile head is cured for about one week, it is carried out from the space of the excavation hole.

  In actual construction, the upper and lower parts of the cylindrical sheet pile 60 are provided with detachable upper and lower lids 67, 68 made of metal, for example, and inserted into the recovery space again, and then rooted. After performing the work, after curing, the cylindrical sheet pile 60 is carried out together with the upper and lower lids 67 and 68 and removed. Thereby, it is possible to prevent the pile head from being damaged by the root cutting operation.

  In addition, when the height of the excavation hole from the pile head to the ground surface is relatively low, or when the ground of the excavation hole is not soft, or when there is no risk of springing from the excavation hole ground of the pile head However, it is not necessary to use the cylindrical sheet pile 60, but after removing unnecessary materials from the pile head sequentially by the removal container 10, a cover body (not shown) is placed on the pile head, It is sufficient to remove the lid after filling up to the surface of the ground and then rooting.

The top view which shows one Embodiment of a removal container. II-II sectional view taken on the line of FIG. III-III sectional view taken on the line of FIG. The perspective view which shows another embodiment of a removal container. The longitudinal cross-sectional view of the removal container of FIG. The front view which shows one Embodiment of a discharge assistance means. The top view which shows one Embodiment of a discharge assistance means. The front view of the state which mounted the removal container on the discharge assistance means. The top view of the state which mounted the removal container on the discharge assistance means. (A) is a general view of the tubular sheet pile 60, (B) is a partial sectional view. (A), (B) shows the up-and-down frame of the cylindrical sheet pile 60, respectively. (A) is a plan view of the upper frame 61, and (B) is a bottom view of the lower frame. It is a figure which shows the attachment structure of the upper-and-lower cover bodies 67 and 68 and the upper cover body 67, The same figure (A) is a bottom view of the upper cover body 67, The same figure (B) is to the cylinder sheet pile 60 of the upper cover body 67. The partial figure which shows the attachment state of (1), the same figure (C) is a top view of a lower cover body. It is explanatory drawing of the removal method of an unnecessary thing, (a) is the insertion process with respect to the hollow pile of a removal container, (b) is the extraction process from the hollow pile of a removal container, (c) is a reinforcing bar for connection with a hollow pile (D) shows the discharge | emission process of the unnecessary material from a removal container.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Unnecessary substance removal apparatus 10 Removal container 11 Removal container main body 11a Cylindrical body 11b Rectangular plate 11c Ring-shaped member 12 Collection space 13 Opening 14 Cover plate 15 Hinge 16 Window 17 Top plate 18 Locking rod 19 Connection part (joint)
21 support material 21a first support material 21b second support material 21c third support material 30 suspension means 31 cap portion 32 T-shaped rod (gripping portion and / or connecting portion)
33 Locking groove 33a Vertical groove 33b Horizontal groove 34 Step part 50 Discharge auxiliary means 51 Leg part 52, 53, 54 Horizontal member 55 Base 56 Engagement protrusion 57a-57d Restriction piece 58 Suspension ring 60 Cylindrical sheet board 61 Upper frame 62 Lower frame 63 Holding rod 64, 64 Guide piece 65 Insertion section 67 Upper lid body 68 Lower lid body 70 Cylindrical body 71 Joint 72 Supporting piece 73 Projecting portion S Stopper

Claims (13)

  It is formed so as to be able to cover the space where the unwanted material generated at the pile head exists during the construction of the pile foundation, and has a recovery space for introducing the liquid or gel-like unnecessary material inside, and the recovery space on the bottom side. An unneeded matter removing container for a pile head, comprising: a removing container main body having an opening to be opened; and an openable / closable lid plate for covering the opening of the removing container main body.   The unnecessary part removal container of the pile head of Claim 1 which provided the holding part and / or the connection part in the upper end of the said removal container main body.   The pile head unnecessary object removing container according to claim 1, further comprising a hanging means that has a gripping part and / or a connecting part and is detachable from the removing container main body. It is formed so as to be able to cover the space where the unwanted material generated at the pile head exists during the construction of the pile foundation, and has a recovery space for introducing the liquid or gel-like unnecessary material inside, and the recovery space on the bottom side. An unnecessary object removing container comprising: a removing container body having an opening to be opened; and an openable / closable lid plate covering the opening of the removing container body;
Comprising discharge assisting means for discharging unnecessary substances introduced into the collection space of the removal container from the removal container;
The discharge assisting means is:
A base on which the removal container can be placed; and an engagement protrusion that engages with the lid plate of the removal container to open the opening when the removal container is placed on the base. Unnecessary material removal device for pile heads.   5. The pile head unnecessary object removing device according to claim 4, wherein a positioning projection for restricting a placement position of the removal container is provided on the base of the discharge assisting means.   The pile foundation is placed on the pile head when the pile foundation is formed, and has an outer shape close to the inner surface of the space where unnecessary objects generated on the pile head exist, and the removal container main body on the inner surface. 5. The pile head unnecessary object removing device according to claim 4, further comprising a cylindrical sheet pile that can be removably inserted.   The pile head unnecessary object removing device according to claim 6, wherein a detachable lid is provided on an upper portion and / or a lower portion of the cylindrical sheet pile.   The pile head space in the excavation hole or hollow pile defined as the space of the pile head where liquid or gel-like unnecessary matter generated in the pile head exists during the construction of the pile foundation is covered with the recovery space, Open the cover plate at the bottom of the recovery space with the unnecessary material, introduce the unnecessary material into the recovery space, extract the unnecessary material from the space of the pile head, cover the opening, and cover the recovery space. An unnecessary object removal method of a pile head characterized by removing unnecessary objects from the space of said pile head. Preparing a base on which the removal container according to claim 1 is placed, and a discharge assisting means having an engaging protrusion protruding from the base;
By placing the removal container extracted from the space where the unnecessary object is present on the position where the engagement protrusion is formed on the base, the engagement protrusion engages with the cover plate of the removal container. A method for removing unwanted matter from a pile head, wherein the opening is opened and the collected unwanted matter is discharged.   The removal container main body is fitted in the space of the pile head, the opening is opened, and the collected unnecessary material is discharged to remove the unnecessary material, and then the pile head is placed on the pile head. The pile head unnecessary material removal method according to claim 8 or 9, comprising a step of placing a pile head body to be covered.   The cylinder sheet pile is placed in the space of the pile head, the removal container main body is fitted into the cylinder sheet pile, the opening is opened, and the collected unnecessary objects are discharged. After removing, the upper and lower openings of the cylindrical sheet pile are covered, the cylindrical sheet pile is placed again in the pile head recovery space, and then the cylindrical sheet pile is carried out from the pile head together with the upper and lower lid bodies. The method for removing unwanted parts from a pile head according to claim 8 or 9.   The method for removing an unnecessary material from a pile head according to claim 8 or 9, wherein the unnecessary material is cement milk and / or impurities in a hollow space in the pile head of an existing pile.   The method for removing impurities from a pile head according to claim 8 or 9, wherein the unnecessary material is concrete and / or impurities deposited on the pile head of a cast-in-place pile.

Images