JP5693778B1 - Temporary mountain retaining structure and temporary mountain retaining method - Google Patents

Abstract

An object of the present invention is to prevent the collapse of earth and sand and to simplify the construction.
A maximum value of a vertical support is determined by a construction distance. The vertical support is provided with two or more connection receiving parts that receive the insertion from the upward direction. Insertion engaging portions at both ends of a pair of horizontal struts are inserted into the connection receiving portions at the same height of the vertically disposed vertical struts. A frame body composed of vertical columns and horizontal columns is formed by four or more vertical columns and two or more pairs of horizontal columns. Two or more of the horizontal struts are provided with steel sheet pile guides having a width and thickness that allow the steel sheet piles to pass only in the vertical direction on one or four sides outside the horizontal rectangular space surrounded by the two pairs of horizontal struts. Therefore, the steel sheet pile can be installed by inserting the steel sheet pile vertically in two or more of the horizontal struts. At this time, since the horizontal strut functions as an upset, the earth and sand outside the steel sheet pile do not enter the inside.
[Selection] Figure 1

Description

  The present invention relates to a mountain retaining that prevents the collapse of earth and sand, and when digging a hole for an underground buried object, burying an underground buried object, or digging out an underground buried object, workers are buried alive, The present invention relates to a temporary pile structure and a temporary pile method that eliminate the possibility of being buried, and the present invention relates to a temporary pile structure and a temporary pile using a steel sheet pile including a lightweight steel sheet pile that prevents collapse of earth and sand. It is about the method.

In patent document 1, conventionally, as a temporary mountain retaining method for retaining a mountain by a supporting work in a shaft or a root cut having a rectangular parallelepiped shape in plan view,
(1) A method in which one of the rectangular vertical side portion and the horizontal side portion is fixed by a cut beam type support, and the other is anchored by an anchor type support.
(2) A method in which one side is fixed with a cut beam type support and the other is a fire beam type support.
(3) A method in which both are anchored by an anchor-type support.
(4) A method in which both are fixed by a beam-type support.
(5) A method in which the mountain is fixed by another type of support (for example, an island method).
It is explained that a preferable method has been selected from the above methods depending on conditions such as the scale of the mountain wall, the properties of the soil, the construction steps, and the like.

Of the various methods described above, in the case of (4) above, i.e., when both the vertical and horizontal sides of the rectangle are piled by a beam-type support, it is a horizontal member for the pile. The vertical and horizontal two-way beams are arranged so as to cross each other while being vertically displaced. In this case, the following problems may occur.
(A) The workability is poor because the vertical gap between the vertical beam and the horizontal beam is narrow.
(B) Installation of cutting beams becomes complicated, and the efficiency and safety of work by heavy machinery are low.
(C) The occupation ratio of the cut beam also increases in plan view, and it is difficult to secure a work space for unloading.
In this case, the upside-down in the vertical and horizontal directions, which are horizontal members for the mountain tower, are also arranged at right angles in a vertically displaced state, as in the case of the above-mentioned beam, It has similar problems. Therefore, Patent Document 1 solves the problems of the prior art, and provides an arrangement structure of horizontal mounting members for mountain retaining that has good workability and high installation efficiency and safety.

However, in order to embed underground structures, the ground at the burial site must be excavated (root-cut) to the required depth. A mountain retaining work is required as a temporary structure to support it so that it will not collapse.
As shown in FIG. 19, in the conventional mountain retaining works, as shown on one side, prior to excavation, H-shaped steel, old rails, etc. are driven into the excavation surface as a main pile at appropriate intervals according to the soil quality. As the excavation progresses, a horizontal sheet pile a for retaining is inserted between the main piles to form a retaining wall, or as shown on the other side, the steel sheet pile 50 is continuously placed prior to excavation. A pile-holding work is performed in which a steel wall is constructed by driving in and the steel sheet pile 50.
However, in the conventional mountain retaining work, the stake is provided by providing a bellows and a cutting b on the inner side of the main pile and the steel sheet pile, and further providing a fire beam 60 at the corner of the belly d and the cutting b. Supporting the external force (earth pressure / water pressure) acting on the wall, when suspending underground structures built into a system box by suspending them with a crane, support members such as abdominal bulges and tensions get in the way, There was a problem that it could not be buried. In addition, since the main pile and steel sheet pile are driven prior to excavation, there is a risk that the nearby ground may collapse due to the vibration generated by the striking force at the time of driving, so as a basement room adjacent to the existing ground house It cannot be used as a mountain anchor for burying underground structures.

  In patent document 2, it was created with such a background, and the intention is to bury an underground structure as a basement room adjacent to a ground house in a limited narrow site. The retaining frame, which is formed only by the four walls, eliminates any supporting members that hinder burial work such as raising and tensioning. The structure of the underground burial for underground construction that can perform excavation work safely and efficiently without causing adverse effects such as collapse on the foundation part is disclosed.

  In order to solve the above-mentioned problem, the first technical means of the underground frame embedded in the underground structure adopted by the present invention is a mountain frame composed of four vertically-opening circumferential walls surrounding the excavation surface, The above-mentioned mountain retaining frame has an upper quadrilateral wall that prevents the surrounding sediment from collapsing in the initial stage of excavation, and a lower stage that is inserted into the open part of the upper quadrilateral wall as excavation progresses to prevent collapse of the exposed surface of the lower excavation It is composed of four walls. Further, the second technical means is that the upper trunk beam and the lower trunk beam are fixed to the upper and lower ends of the unit walls formed of corrugated steel plates respectively on the upper and lower circumferential walls. The encounters between the beams are configured to be detachably connected via steel fire beams provided at the corners. And as for the 3rd technical means, the hanging metal fitting is fixed to the upper trunk beam of an upper stage and a lower stage 4 surrounding wall in a required position, respectively. Further, the fourth technical means is that a through hole communicating vertically with the upper longitudinal beam and the lower longitudinal beam of the upper four circumferential walls is formed in a hollow center column inserted into the through hole. A support rod having a distal end bent outward is fitted and fixed, and a safety fence surrounding the upper outer side of the upper four peripheral wall is stretched through the support rod. Further, according to a fifth technical means, on the upper and lower quadrangular walls, scaffold ladders that are detachably engaged with the upper trunk beam and the lower trunk beam are provided.

JP2001-262560 JP 2000-204553 A

As described above, Patent Document 1 joins the vertical erection and the lateral erection in the form of making a right angle on the same plane through the L-shaped joint member having two joints. did. In addition, the longitudinal beam and the transverse beam are joined in a crossed manner on the same plane through a cross-shaped joining member having four joints protruding on the same plane. As a result, the installation structure of the horizontal mounting member for the mountain mounting, which has good workability and high efficiency and safety of installation work, is obtained.
Therefore, in patent document 1, when forming a surrounding wall with the up-down direction steel sheet pile which prevents collapse of the surrounding earth and sand at the initial stage of excavation, it is necessary to drive in the steel sheet pile which forms a surrounding wall, and also forms a surrounding wall. Inside, there was an upset and a joining member, and it was not an environment where workers could enter and work inside.

Further, Patent Document 2 discloses an upper quadrilateral wall that is open in the vertical direction that prevents the surrounding sediment from collapsing at the initial stage of excavation, and an exposed lower excavation surface that is inserted into the open part of the upper quadrilateral wall as excavation progresses. When the underground structure is built as a basement room adjacent to the ground house in a limited narrow site, it is composed of the lower four-round walls that are open in the vertical direction to prevent the collapse of the soil. We provide a mountain retaining frame for underground structure burial that can prevent drilling without fail.
Here, the unit wall that constitutes the upper quadrilateral wall is made of corrugated steel, and the rigidity against external force (earth pressure / water pressure) is secured by the upper trunk beam, lower trunk beam and steel fire beam made of H-shaped steel. In addition, the unit wall that forms the lower quadrilateral wall is also formed of a corrugated steel plate, and external forces (earth pressure, Since the rigidity against water pressure is secured, the upper quadrilateral wall prevents the sediment around the excavation from collapsing at the initial stage of excavation, and the lower excavation surface is prevented from collapsing by the lower quadruple wall as the excavation progresses. The Therefore, even when an underground structure as a basement room is buried adjacent to an above-ground house in a narrow site, excavation can be performed without adverse effects such as collapse on the foundation portion supporting the load of the above-mentioned house.

However, in Patent Document 2, rigidity against external force (earth pressure / water pressure) is ensured by the upper trunk beam, the lower trunk beam and the steel fire beam, but these Patent Document 1 and Patent Document 2 include It has a function to prevent water leakage as a common matter, and it is necessary to close the joining of corrugated steel sheets (steel sheet piles) as much as that. For example, as in Patent Document 1, steel sheet piles are driven into the four-walled wall. When it was formed, the work time had to be long.
In an actual site, it is very rare to bury a buried object or dig a hole for burying it in a place that cuts through a water vein, and it is almost none. Moreover, even if there is a case where the water vein is traversed in a house built on a slope in a mountainous area, it is sufficient to pump it up with a pump.
If a steel sheet pile is driven into or pulled out of the four-walled wall, a special press machine, a vibro hammer, a rough terrain crane, or other dedicated machines are required, which may increase the work cost. In addition, there are not a few workers who are unfamiliar with work in civil engineering and construction sites, and if there are mistakes in the work content and work sequence, not only employees on the site but also road passers-by may be affected.

  Therefore, the present invention was made to solve the above problems, and even an unskilled worker can assemble and disassemble without any mistake, and requires construction such as driving a steel sheet pile with a dedicated machine. However, an object of the present invention is to provide a temporary mountain retaining structure and a temporary mountain retaining method that can prevent the collapse of adjacent earth and sand and that can be easily constructed.

In the temporary mountain retaining structure according to the invention of claim 1, the vertical struts erected vertically in the vertical direction are inserted into the insertion engaging portions disposed at both ends of the horizontal strut from above. Two or more connection receiving portions for receiving the insertion are provided. Two horizontal struts in pairs are connected by inserting insertion engaging portions at both ends into connection receiving portions at the same height of the vertical struts arranged opposite to each other and connecting them.
At least one of the horizontal struts is rotated 90 degrees from the position of the horizontal strut provided with the insertion engagement portion outside the horizontal rectangular space surrounded by the two pairs of horizontal struts. A steel sheet pile guide having a width and a height through which the steel sheet pile passes only in the vertical direction is disposed at the position, and is movable in a direction perpendicular to the length direction of the horizontal strut. At this time, it is desirable that the lower end of the steel sheet pile is buried in the ground by driving or the like. Further, the steel sheet pile guide is formed in the horizontal direction with the horizontal strut as one side, and is inserted in the vertical direction for each steel sheet pile without sliding and connecting between the adjacent steel sheet piles. It is intended to be removable, and defines the width in the length direction of the horizontal strut and the height in the direction perpendicular to the horizontal strut. In addition, this division includes not only what surrounds the perimeter of a steel sheet pile but also what hold | maintains partially.
Here, the vertical struts are erected vertically in the up-down direction, with two pairs as a minimum unit, two pairs as a minimum unit, and the vertical strut main body composed of two or more pairs from the upper direction. A connection receiving portion provided with two or more stages for receiving the insertion is provided. Two or more connection receiving portions are preferably provided at intervals of 20 to 100 cm because the horizontal struts to be attached function as an abdomen. Moreover, the number of connection receiving parts may be two or more and four or less, but preferably three or four receiving parts adjacent to each other at every 90 degrees at one place.

In addition, the horizontal struts are a pair of two, in which the insertion engaging portions at both ends are inserted and connected to the connection receiving portion at the same height of the vertical struts arranged to face each other. In the same dimensions, various lengths are available.
Two or more of the horizontal struts have a width and a height that allow a steel sheet pile to pass only in the vertical direction on one or four sides formed by a horizontal rectangular space surrounded by the two pairs of horizontal struts. A steel sheet pile guide is provided. The steel sheet pile used here can be a steel sheet pile such as a lightweight steel sheet pile or a corrugated steel sheet. In this embodiment, NS-SP-II (Nippon Steel & Sumikin Co., Ltd.), JFESP
-2 (manufactured by JFE Steel Corporation) was used. In order to collect the temporary pile structure in a compact and lightweight manner, it is desirable that the steel sheet pile be a lightweight steel sheet pile. In addition, unless otherwise indicated, the steel sheet pile in the case of implementing this invention is demonstrated in the meaning of steel sheet piles, such as a corrugated steel sheet containing a lightweight steel sheet pile.
The steel sheet pile guide is formed in the horizontal direction with the horizontal column as one side, and the width in the length direction of the horizontal column and the height in the vertical direction with respect to the horizontal column can be inserted and removed in the vertical direction. The width and height of passing the steel sheet pile only in the vertical direction at a position rotated 90 degrees from the position of the horizontal strut provided with the insertion engagement portion in one or more of the horizontal struts. It forms a guide for the future.

  In the temporary pile structure according to the second aspect of the present invention, the two or more connection receiving portions disposed on the vertical strut are two to four U-shaped receiving portions with respect to the horizontal section of the vertical strut. In addition, the dimensions of the connection receiving portions are arranged in common, and the position is 180 degrees and / or 90 degrees with respect to the horizontal section of the vertical support. Further, the dimensions of all the connection receiving parts are made common and arranged as two or more stages.

The lower end of the vertical column of the temporary pile structure according to the invention of claim 3 is formed by connecting any one of a pin-like pile, a substantially square base, or a jack base.
Here, a metal pointed pile with a sharp lower end is suitable for driving into the ground, and a substantially square base can load the vertical column according to a predetermined area (100 mm square to 300 mm square). It is suitable for placement on the ground surface when the ground is hard, and is made of metal or synthetic resin. Alternatively, the jack base is made of metal in which a ball screw suitable for alignment with another vertical column is formed. Any device having these functions may be used.

A steel sheet pile guide disposed on the horizontal strut of the temporary pile structure according to the invention of claim 4 is an L-shaped steel member obtained by cutting L-shaped steel into a vertical width of ± 10 mm of the diameter of the horizontal strut, Other than that, it is similarly formed by a T-shaped steel member having a vertical width of ± 10 mm of the diameter of the horizontal strut, and the L-shaped steel member and the T-shaped steel member are welded to the horizontal strut.
Here, the steel sheet pile guide disposed on the horizontal strut functions as the horizontal strut of the horizontal strut, so that the space surrounded by the horizontal strut is the horizontal strut side, and the steel sheet pile disposed on the outer periphery thereof Therefore, it is only necessary that the steel sheet pile side of the horizontal strut can maintain vertical. Although the steel sheet pile can be inserted from the lateral direction, it is preferable to put the steel sheet pile vertically in and out because it is related to human safety.

An L-shaped steel member welded to both ends of the horizontal column between the two horizontal columns connected to the vertical column at a 90-degree angle in the temporary pile structure according to the invention of claim 5, and the two A fire striking beam is arranged at the corner so that the angle between the L-shaped steel members welded at both ends to the horizontal strut of the steel rod does not change.
Here, the fired beam at the corner is one that reinforces the weakness of the parallelogram, that is, the angle change is not changed by the fired beam, because the temporary mountain structure has a rectangular shape in plan view. It is. The fired beam at the corner may have a mechanical structure in which both ends can be connected to the two horizontal struts so as to draw a right isosceles triangle if possible.

The steel sheet pile guide provided in the horizontal strut in the temporary pile structure according to the invention of claim 6 is sized so that it cannot move in the horizontal direction while passing the height and width of the steel sheet pile in the length direction. An L-shaped steel member and a T-shaped steel member are formed.
Here, the steel sheet pile guide in which the L-shaped steel member and the T-shaped steel member are formed in a size that allows the height and width of the steel sheet pile to pass through can be configured most inexpensively. Here, the steel sheet pile can be inserted up and down, but it is difficult to fit from the side, and the assembly cannot be distorted.

The steel sheet pile guide provided in the horizontal strut in the temporary pile structure according to the invention of claim 7 determines the size of both end plates to a size allowing the height of the steel sheet pile to pass, and round bars in the width interval of the steel sheet pile Alternatively, a partition member made of a square bar is provided, one of the both end plates and the partition member is welded to the horizontal strut, and the other end side is connected by a strip-shaped member or a rod-shaped member.
Here, the steel sheet pile guide provided in the horizontal strut is provided with a number of the steel sheet pile installation number + 1 separating member in the width interval of the steel sheet pile, and one of the separating members is welded to the lateral strut, The other end side is welded and connected to a belt-like member or a rod-like member.

The connection receiving portion of the vertical strut in the temporary pile structure according to the invention of claim 8 is formed by continuously forming four U-shapes in plan view and welding them to the main body portion of the strut.
Here, four U-shapes are continuously formed in a plan view, and one place is open, so that the number of welding places including that is at most four. After press molding, any one or more of an oblong hole, a circular hole, a triangular hole, a rectangular hole, and a slit may be punched, or may be stamped and press-molded simultaneously with the press molding or sequentially from the end side. . In addition, an oblong hole, a circular hole, a triangular hole, a rectangular hole, and a slit do not ask | require an exact shape, but mean an approximate shape.
In addition, formation of a connection part makes a single metal plate into a flat plate state, and forms four U-shaped receiving parts by one press working, and then stands it up to change the shape of the connection part. Although it forms, it may process by dividing into multiple times. Alternatively, the four U-shaped receiving portions can be formed by pressing at the same time or sequentially, and then the connecting portions can be sequentially wound. And it can also form so that a U-shaped receiving part and a connection part may be wound in order previously. When inserted into the end of the column main body in this state, it can move against the elastic force.

In the temporary pile structure according to the ninth aspect of the invention, the insertion engaging portions at both ends formed on the horizontal struts are thicker at the inner side of the horizontal struts than at the tips without changing the outer dimensions thereof. (Changed). Thereby, the space | interval of a vertical support | pillar is not changed by the coupling depth of the insertion engaging part of the both ends formed in the said horizontal support | pillar.
Here, the insertion engaging portion is wedge-shaped with the lateral strut side thicker than the tip, and it is desirable that the connection receiving portion receiving the same is also tapered, but may have the same upper and lower opening dimensions. .

The temporary mountain retaining method according to the invention of claim 10 is vertically installed in the vertical direction, and a vertical support composed of two or more pairs is inserted with respect to insertion from above. There are two or more connection receiving parts. In addition, in the two horizontal struts, the insertion engaging portions at both ends are inserted and connected to the connection receiving portions at the same height as the vertical struts arranged to face each other. At least one of the horizontal struts is rotated 90 degrees from the position of the horizontal strut provided with the insertion engagement portion outside the horizontal rectangular space surrounded by the two pairs of horizontal struts. A steel sheet pile guide having a width and a height that allows the steel sheet pile to pass only in the vertical direction is disposed at the position, and is movable in a direction perpendicular to the length direction of the horizontal strut. The horizontal strut is formed in a horizontal direction as one side, and can be inserted / removed vertically in each steel sheet pile without sliding between adjacent steel sheet piles. The steel sheet pile guide which divides the width | variety of the length direction of this and the height of the perpendicular direction with respect to the said horizontal support | pillar is comprised.
Here, the vertical strut is erected vertically in the up-down direction, with two pairs as a minimum unit, two pairs as a minimum unit, and with respect to insertion from above in a strut main body composed of two or more pairs. A connection receiving section provided with two or more stages for receiving the insertion is provided. Moreover, the number of connection receiving parts may be two or more and four or less, but if possible, it is desirable to have three or four receiving parts at one place.
In addition, the horizontal struts are a pair of two, in which the insertion engaging portions at both ends are inserted and connected to the connection receiving portion at the same height of the vertical struts arranged to face each other. Then, it is the same dimension.
A steel sheet pile guide having a width and a height that allows a steel sheet pile to pass only in the vertical direction on one or four sides outside the horizontal rectangular space surrounded by the two pairs of horizontal supports is provided at two or more of the horizontal supports. Is provided. Here, NS-SP-II (Nippon Steel & Sumikin Co., Ltd.) and JFESP are used as steel sheet piles.
-2 (manufactured by JFE Steel Corporation) was used. In order to collect the temporary pile structure in a compact and lightweight manner, it is desirable that the steel sheet pile be a lightweight steel sheet pile. In addition, unless otherwise indicated, the steel sheet pile in the case of implementing this invention is demonstrated in the meaning of steel sheet piles, such as a corrugated steel sheet containing a lightweight steel sheet pile.
The steel sheet pile guide has a width and height that allows the steel sheet pile to pass only in the vertical direction at a position rotated 90 degrees from the position of the horizontal strut provided with the insertion engagement portion in one or more of the horizontal struts. The guide is formed.

The vertical support column in the temporary pile structure according to the first aspect of the present invention is provided with two or more connection receiving portions that receive the insertion with respect to the insertion from above. Insertion engaging portions at both ends of a pair of horizontal struts are inserted into the connection receiving portions at the same height of the vertical struts arranged to face each other. In this manner, a three-dimensional frame composed of the vertical struts and the horizontal struts is formed by four or more vertical struts and two or more pairs of horizontal struts. The horizontal strut is formed in a horizontal direction as one side, and can be inserted / removed in the vertical direction for each steel sheet pile without sliding connection between the adjacent steel sheet piles. A steel sheet pile guide is defined that defines a width in the vertical direction and a height in the vertical direction with respect to the horizontal strut.
Two or more of the horizontal struts have a width and a height that allow a steel sheet pile to pass only in the vertical direction in one or two to four sides outside the horizontal rectangular space surrounded by the two pairs of horizontal struts. Since the steel sheet pile guide is provided, the steel sheet pile can be installed by inserting the steel sheet pile vertically into two or more of the horizontal struts. At this time, since the horizontal strut functions as an upset, the earth and sand outside the steel sheet pile do not enter the inside. Steel sheet pile guides having a width and a height that allow the steel sheet pile to pass only in the vertical direction can be provided on both horizontal sides of the horizontal strut, but only one side that functions as an upset of the horizontal strut is suitable.
In particular, in the experience of the inventors, the water veins are rarely touched on the roads and residential areas, and even on slopes in the mountains, it is possible to touch or cross the water veins with a large amount of water. Very rare and rarely such. Even if it occurs, it is only the extent that water oozes out, and even if it occurs, it can be solved by installing a pump.
Furthermore, the earth and sand are dammed with steel sheet piles, and the space between the steel sheet piles is such that a gap of 10 to 30 mm can be formed at the maximum, and the horizontal rectangular space in which the earth and sand are almost surrounded by the two pairs of horizontal struts. Will not flow into.
And since the earth and sand dammed up with the steel sheet pile function as an uprising with the required number of vertical columns and horizontal columns, the earth and sand are stably dammed up.
Furthermore, the temporary pile structure according to the present invention may be excavated (rooted) in the ground after being assembled on the ground and moved there, or after digging to a predetermined depth using heavy machinery. The temporary mountain retaining structure of the present invention may be installed in the ground. In particular, even when there are devices such as septic tanks buried in the ground, they can be set for a long time in the installed state. Moreover, although the temporary mountain retaining structure of this invention demonstrated in the example which carries out a mountain stop, it can be used also as a temporary enclosure of the scaffold for construction sites. It can also be used as a guard fence.
Therefore, even inexperienced workers will not be out of order in assembly and disassembly, so there is no mistake, assembly and disassembly can be done without error, and there is no need for construction of steel sheet piles with a dedicated machine, and the collapse of the earth and sand It becomes a temporary mountain retaining structure which can be prevented and can be easily constructed.

  In the temporary pile structure according to the second aspect of the present invention, the two or more connection receiving portions of the vertical struts are 180 degrees, two U-shaped receiving portions or 90 degrees four relative to the horizontal cross section of the vertical struts. The U-shaped receiving portion of 90 degrees and three U-shaped receiving portions of 90 degrees, and two or more steps in common in the length direction of the vertical struts are disposed. In addition to the effects of the above, if one position can be positioned, other positions can be automatically determined, and no rotational force is applied to the vertical support by the connection receiving portion, so that a stable structure can be assembled. . Moreover, by making each connection receiving part into the same shape, the material to be used can be only two kinds of vertical struts and horizontal struts, and even if steel sheet piles such as corrugated steel sheets including lightweight steel sheet piles are inserted, 3 Since it consists only of types of parts, it is easy to manage the components.

  The lower end of the vertical strut in the temporary pile structure according to the invention of claim 3 is formed by connecting one kind of a pointed pile, a substantially square base or a jack base. In addition to the effect described in 2, when it is determined that the soil is soft soil (earth and sand) according to the land conditions when the temporary mountain structure of the present invention is installed, the lower end of the vertical column is formed in a cusp-like shape. When it is judged that the pile is solid soil (earth and sand), the lower end of the vertical column is a substantially square base. An arbitrary assembly structure can be configured by. In particular, when excavating (root cutting), a large step may occur at the lower end of the vertical column. If the error is small, it can be absorbed by positioning the substantially square base, but if the error is large, it is absorbed by the jack base.

  The steel sheet pile guide disposed on the horizontal strut in the temporary pile structure according to the invention of claim 4 has an L-shaped steel member whose end is ± 10 mm in width of the diameter of the horizontal strut, and the other is the diameter of the horizontal strut In addition to the effect described in any one of claims 1 to 3, in addition to the effect described in any one of claims 1 to 3, it is formed with a T-shaped steel member having a width of ± 10 mm and welded to the horizontal strut. Since a steel sheet pile guide can be formed, the operability during assembly and disassembly is good. In addition, since the L-shaped steel member and the T-shaped steel member are formed from the shape steel having a width of ± 10 mm of the diameter of the horizontal strut, the rotation of the horizontal strut is restrained even when placed on the truck bed. The loading state can be stabilized.

  Between the two horizontal struts connected to the vertical struts at an angle of 90 degrees in the temporary pile structure of the invention of claim 5, an L-shaped steel member welded at both ends to the horizontal struts, and two The fire striking beam is disposed in the corner so that the angle between the L-shaped steel members welded at both ends to the horizontal strut does not change, and therefore, according to any one of claims 1 to 4. In addition to the effect, since the space between the two horizontal struts is fixed by the fire beam, the temporary pile structure of the present invention can be firmly maintained. In particular, in the case of a mountain retaining in which the temporary retaining structure of the present invention is embedded in a pit shape, it can withstand a large external force. Moreover, although the temporary mountain retaining structure of this invention is demonstrated in the example which carries out a mountain stop, it can be used also as a temporary enclosure of the scaffold for construction sites. Moreover, it can be used as a guard fence and there is no sense of incongruity with a scaffold for a construction site.

  The steel sheet pile guide provided on the horizontal strut in the temporary pile structure according to the invention of claim 6 welds the L-shaped steel member and the T-shaped steel member to dimensions that allow the height and width of the steel sheet pile to pass only in the vertical direction. Therefore, in addition to the effect described in any one of claims 1 to 5, the steel sheet pile can be held in the lightest state, and therefore, it is excellent in weight reduction.

The steel sheet pile guide provided in the horizontal strut in the temporary pile structure of the invention of claim 7 is provided with a partition member made of a round bar or a square bar at a width interval through which the height and width of the cross section of the steel sheet pile are passed. Since one of the partition members is welded to the horizontal strut and the other end is welded to a band-shaped member or a rod-shaped member, the effect according to any one of claims 1 to 5 is achieved. In addition, even though it is a simple structure, some of the steel sheet pile guides do not protrude outward and are covered with strips or rods, so even if they are handled roughly, the height of the cross section of the steel sheet piles It is difficult for the dimensions to pass through the width and width to be confused.

  Since the connection receiving part of the vertical strut in the temporary pile structure of the invention of claim 8 is formed by continuously forming four U-shapes in plan view and welding it to the main body of the strut. In addition to the effect described in any one of claims 1 to 7, any one of an oblong hole, a circular hole, and a slit that can be continuously arranged, and which is welded to the main body during that time. Because the welding area can be widened using a high mechanical strength and there is no need to handle the U-shaped connection receiving part individually, welding work can be done mechanically, even during use Since external force does not concentrate on one point, it is difficult to produce defects.

  In the temporary pile structure according to the ninth aspect of the present invention, the insertion engaging portions at both ends formed on the horizontal struts have the same distance to the outside of both ends of the insertion engaging portion, and are wedge-shaped rather than the tip. Since the inner side of the horizontal strut is formed thicker, in addition to the effect according to any one of claims 1 to 8, the lateral strut side is thicker than the tip in a wedge shape. Easy to assemble. Further, since the distance between the adjacent vertical struts does not change when assembled, even if the insertion engaging portions and the connection receiving portions at both ends are assembled, there is no deviation in the overall dimensions.

In the temporary mountain retaining method according to the invention of claim 10, the vertical struts erected vertically in the vertical direction are provided with two or more connection receiving portions that receive the insertion with respect to the insertion of the horizontal struts from above. And both insertion engaging portions of a pair of horizontal struts are inserted and connected to the connection receiving portion at the same height of the vertical struts arranged opposite to each other, and one or more of the horizontal struts are A steel sheet pile guide is provided outside the horizontal rectangular space surrounded by the two pairs of horizontal struts, and at a position rotated 90 degrees from the position of the horizontal strut provided with the insertion engagement portion. Is passed through only in the vertical direction so as to be movable in a direction perpendicular to the length direction of the horizontal struts.
In two or more of the horizontal struts configured in this way, a steel sheet pile is placed only in the vertical direction on one or two or four sides located outside the horizontal rectangular space surrounded by the two pairs of horizontal struts. Since the steel sheet pile guide having a width and a height to be passed through is provided, the steel sheet pile can be installed by inserting the steel sheet pile vertically into two or more of the horizontal struts. The horizontal strut is formed in a horizontal direction as one side, and can be inserted / removed in the vertical direction for each steel sheet pile without sliding connection between the adjacent steel sheet piles. A steel sheet pile guide is defined that defines a width in the vertical direction and a height in the vertical direction with respect to the horizontal strut. At this time, since the said horizontal support | pillar functions as an erection, the earth and sand outside a steel sheet pile do not enter inside.
In particular, in the experience of the inventors, the water veins are rarely touched on the roads and residential areas, and even on slopes in the mountains, it is possible to touch or cross the water veins with a large amount of water. It is very rare. Most of the water is so oozing that it can be solved by installing a pump.
Moreover, earth and sand are dammed up by steel sheet piles, and the space between the steel sheet piles is such that a gap of 1 to 2 cm can be formed at the maximum. Will not flow into.
And since the earth and sand dammed up with the steel sheet pile function as an uprising with the required number of vertical columns and horizontal columns, the earth and sand are stably dammed up.
Furthermore, the temporary pile structure according to the present invention may be dug into the ground after being assembled on the ground, or after being dug to a predetermined depth using a heavy machine. May be set up underground. In particular, even when there are devices such as septic tanks buried in the ground, they can be set for a long time in the installed state. Moreover, although the temporary mountain retaining structure of this invention demonstrated in the example which carries out a mountain stop, it can be used also as a temporary enclosure of the scaffold for construction sites. It can also be used as a guard fence.

FIG. 1 is an explanatory view showing a skeleton of a minimum unit in a temporary pile structure according to an embodiment of the present invention in a perspective view. FIG. 2 shows an example in which the temporary mountain structure according to the embodiment of the present invention is installed in a pit excavated (root cut). FIG. 3 shows an example in which the temporary mountain structure according to the embodiment of the present invention is directly installed on land to be excavated (root cut). FIG. 4 is a perspective view immediately before inserting one steel sheet pile in the temporary pile structure according to the embodiment of the present invention. FIG. 5 is a perspective view during insertion of one steel sheet pile in the temporary pile structure according to the embodiment of the present invention. FIG. 6 is a perspective view after inserting one steel sheet pile in the temporary pile structure according to the embodiment of the present invention. 7A and 7B are perspective views for explaining two types of vertical struts in the temporary pile structure according to the embodiment of the present invention. FIG. 7A is an embodiment of a connection receiving portion without a step, and FIG. It is embodiment of the connection receiving part with a level | step difference. FIG. 8 is a perspective view for explaining three types of lower end aspects of the vertical struts in the temporary pile structure according to the embodiment of the present invention, where (a) is a pointed pile, and (b) is a substantially square base. Step (c) is a jack base configuration. FIG. 9 is a plan view, FIG. 9 (b) is a perspective view, and FIG. 9 (c) is an unfolded view. FIG. 9 (a) is a plan view, and FIG. 9 (b) is an exploded view. FIG. FIG. 10 is a plan view, FIG. 10 (b) is a perspective view, and FIG. 10 (c) is an unfolded view. FIG. FIG. 11 is a plan view, FIG. 11 (b) is a perspective view, and FIG. 11 (c) is an unfolded view. FIG. 11 (a) is a plan view, FIG. FIG. FIG. 12 is a sectional view and (b) is a perspective view for explaining the width and height of a steel sheet pile used in the temporary pile structure according to the embodiment of the present invention. FIG. 13 is a plan view and FIG. 13 (b) is a front view for explaining an embodiment of a steel sheet pile guide included in the horizontal strut in the temporary pile structure according to the embodiment of the present invention. FIGS. 14A and 14B are diagrams for explaining the aspect of the steel sheet pile guides of the horizontal struts in the temporary pile structure according to the embodiment of the present invention. FIG. 14A is an exploded perspective view, and FIG. It is a disassembled perspective view. FIG. 15: is a perspective view explaining the other aspect of the steel sheet pile guide which the horizontal support | pillar has in the temporary mountain retaining structure of embodiment of this invention. FIGS. 16A and 16B illustrate a mode in which steel sheet piles are inserted into three wall surfaces in the temporary mountain retaining structure according to the embodiment of the present invention. FIG. FIG. 17 is a cross-sectional view illustrating a mode in which a steel sheet pile is inserted into the steel sheet pile guide in the temporary pile structure according to the embodiment of the present invention. FIG. 18 is a perspective view when the temporary mountain retaining structure according to the embodiment of the present invention is used as a temporary enclosure or guard fence for a scaffold for a construction site. FIG. 19 is a perspective view illustrating a case where a mountain is fixed by a conventional support work.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that, in the embodiments, the same reference numerals and the same reference numerals are the same or corresponding functional parts, and therefore, redundant description thereof is omitted here.

[Embodiment]
In FIG. 1 to FIG. 18, the vertical struts 10 erected vertically in the vertical direction are composed of two, four, six, eight,. Usually, it is a numerical value that is the same as or approximated to the standard of a building having a length of about 90, 180, 270, 360,. One vertical support 10 is provided with one connection receiving portion 20 at intervals of 20 to 100 cm. However, although this dimension may be equally divided, the upper and lower ends of the vertical support 10 are generally shorter than the other because of the relationship with other adapters to be connected. In addition, when implementing this invention, the material and shape of the vertical support | pillar 10 are not ask | required.

For example, the lower end of the vertical column 10 is a pin-like pile 11 made of a cylindrical metal such as a pile, a metal or synthetic resin-like substantially square base 12, or a jack base 13 that adjusts a ball screw-like distance. One type is selected and used. Of course, there may be a case where the vertical column 10 is erected directly without connecting them. This selection is determined by the conditions when the temporary mountain structure of the present embodiment is installed. For example, as shown in FIG. 2, in the case of a soft land, a pile 11 having an apical shape is driven into the soil or earth and sand with respect to the dug pit P, and the lateral direction with respect to the vertical support column 10 that is erected vertically. That is, it should be able to withstand external force in a right angle direction.
If the ground surface is solid, the lower end of the vertical support 10 is a substantially square base 12, and the temporary pile structure is moved without driving the vertical support 10 into the solid land, as shown in FIG. Can be installed. 2, when a predetermined range is excavated (root cut) after the temporary mountain retaining structure of the present embodiment is installed, or the pit P excavated (root cut) as shown in FIG. In some cases, the temporary mountain structure is moved and installed. Here, in the case where the positions of the plurality of substantially square bases 12 do not have a uniform height, by using the jack base 13 that adjusts the ball screw-like distance, any assembly structure according to the state of the land is obtained. You can make up your body.

Moreover, the connection support part 20 is provided in the vertical support | pillar 10 for every space | interval of 20-100 cm. The connection receiving portion 20 is equidistant around the column main body portion 10A of the vertical column 10, and when viewed in plan, the cross section in the length direction of the vertical column 10 consists of three or four, Alternatively, the vertical column 10 has a U-shaped cross section including two in the longitudinal direction. This U-shape means that a U-shape opening in plan view is welded around the column main body portion 10A.
Here, the column main body portion 10A of the vertical column 10 means only the pole from which the connection receiving portion 20 is removed. Specifically, as shown in FIG. 9, the U-shaped connection receiving portion 20 having four pieces in plan view includes a U-shaped receiving portion 21 and a U-shaped receiving portion 22 that is 90 degrees away from the U-shaped receiving portion. Furthermore, it has a U-shaped receiving portion 23 which is 90 degrees away from it, and a U-shaped receiving portion 24 formed between the U-shaped receiving portion 21 and the U-shaped receiving portion 23.
In the developed view of FIG. 9C, the upper side and the lower side are drawn with the same length, but the lengths of the upper side and the lower side are slightly different, and the lower side is shortened. Therefore, the U-shaped connection receiving portion 20 is tapered in the attached state. The U-shaped receiving portion 21, the U-shaped receiving portion 22, the U-shaped receiving portion 23, and the U-shaped receiving portion 24 all have a large upper opening area, and the lower opening area becomes smaller. Yes. That is, the shape shown in the developed view of FIG. 9C is a shape that is pressed from a metal plate, and the metal plate can be a single rectangular shape or a substantially fan shape.

9 between the open ends of the U-shaped receiving portion 21, the U-shaped receiving portion 22, the U-shaped receiving portion 23, and the U-shaped receiving portion 24. It is formed with a curvature along the periphery of 10A, and there are connecting portions 21a, 22a, 23a between them, and oval punching holes 21b, 22b, 23b are formed in the connecting portions 21a, 22a, 23a. It is installed. The oval punching holes 21b, 22b, and 23b secure a welding distance and an area in order to obtain sufficient welding strength. Further, the end portion 21c and the end portion 24c are serpentine end portions (zigzag end portions). This zigzag is also intended to obtain a sufficient distance at the time of welding. By increasing the mechanical strength and lengthening the distance, the connection receiving portion 20 and the insertion engaging portion 40 can be coupled together. Obtaining elastic force. Of course, it can also be a straight line.
Therefore, the U-shaped receiving portion 21, the U-shaped receiving portion 22, the U-shaped receiving portion 23, and the U-shaped receiving portion 24 are wound with a curvature along the periphery of the column main body portion 10A of the vertical column 10. If this is the case, the column main body 10A is surrounded by substantially one round, the oval punching holes 21b, 22b, and 23b have a wide welding length and area, and the meandering end 21c and end 24c are also welded. The length and area can be increased.

Thus, unlike the conventional example in which the vertical column 10 of the above embodiment is directly welded around the column main body 10A of the vertical column 10 along the circumference of the column main body 10A of the vertical column 10. Even the elliptical punch holes 21b, 22b, and 23b are elastically functioning, so that even if an unreasonable operation is performed, they are within the elastic limit and are less likely to be damaged. Accordingly, it is possible to exhibit the elasticity and holding function that are not conventionally provided.
Specifically, since the welding robot works, a plurality of U-shaped connection receiving portions 20A are inserted around the column main body portion 10A of the vertical column 10 and welding is performed while positioning the connection receiving portions 20A. .
In this embodiment, as shown in FIG. 9, there are four U-shaped receiving portions 21, a U-shaped receiving portion 22, a U-shaped receiving portion 23, and a U-shaped receiving portion 24. Although it is the connection receiving portion 20 </ b> A, this may be a connection receiving portion 20 </ b> B having three U-shaped receiving portions 25, a U-shaped receiving portion 26, and a U-shaped receiving portion 27. In the following, as representations of connection receivers, 20A, 20B, and 20C indicate embodiments, and 20 indicates a common connection receiver.

The three U-shaped connection receiving portions 20B shown in FIG. 10 have a U-shaped receiving portion 25, a U-shaped receiving portion 26, and a U-shaped receiving portion 27, and the U-shaped receiving portion. 25 and the U-shaped receiving portion 26, and between the U-shaped receiving portion 26 and the U-shaped receiving portion 27, there are connecting portions 25a and 26a, and the connecting portions 25a and 26a have an oval shape. Punching holes 25b and 26b are formed. The oval punching holes 25b and 26b can increase the welding length and area, and the meandering end 25c and end 27c can also increase the welding length and area.
In the developed view of FIG. 10C, the upper side and the lower side are drawn with the same length, but the lengths of the upper side and the lower side are slightly different, and the lower side is shortened. Therefore, the U-shaped connection receiving portion 20 is tapered in the attached state. Each of the U-shaped receiving portion 25, the U-shaped receiving portion 26, and the U-shaped receiving portion 27 has a large upper opening area and a lower opening area. That is, the shape shown in the developed view of FIG. 10C is also press-worked from a metal plate, and the metal plate can be a single substantially rectangular or substantially fan shape.

The three U-shaped connection receiving portions 20B may be two U-shaped connection receiving portions 20C. An example is shown in FIG.
The two U-shaped connection receiving portions 20 </ b> C include a U-shaped receiving portion 28 and a U-shaped receiving portion 29, and a space between the U-shaped receiving portion 28 and the U-shaped receiving portion 29 is provided. The connecting portion 28a is provided with an oval punching hole 28b. The oval punching hole 28b can increase the welding length and area, and the meandering end 28c and end 29c can also increase the welding length and area.
Also in the present embodiment, the space between the U-shaped receiving portion 28 and the U-shaped receiving portion 29 does not simply have a U-shaped form. Since there is room in the length of the joint, the coupled state is stabilized by its elasticity.
In the above embodiment, the oval punching holes 21b, 22b, 23b, the oval punching holes 25b, 26b, and the punching holes 28b formed in the arc portion are two or three rows of oval holes or It can be an X-shaped oval hole. Alternatively, a zigzag oval hole may be used.
In the development of FIG. 11C, the upper side and the lower side are drawn with the same length, but the upper side and the lower side are slightly different in length, and the lower side is shortened. Therefore, the U-shaped connection receiving portion 20 is tapered in the attached state. Each of the U-shaped receiving portion 28 and the U-shaped receiving portion 29 has a wide upper opening area and a lower opening area. That is, the shape shown in the developed view of FIG. 11 (c) is also press-worked from a metal plate, and the metal plate can be a single substantially rectangular or substantially fan shape.

The two U-shaped connection receiving portions 20 </ b> C composed of the U-shaped receiving portion 28 and the U-shaped receiving portion 29 configured as described above are provided in two upper and lower stages as shown in FIG. 7B. As with the four U-shaped connection receiving portions 20A, one U-shaped connection receiving portion can use four U-shaped connection receiving portions. However, since there is a step, it is necessary that the step does not matter.
As described above, the vertical support column 10 is erected vertically in the vertical direction, and is composed of two or more pairs, with two pairs as a minimum unit, and the insertion with respect to the insertion from above. As long as two or more stages of connection receiving parts 20 (20A, 20B, 20C) are provided.
In addition, a plurality of connection receiving portions 20 (20A, 20B, 20C) are usually provided on one vertical support column 10, and the plurality of connection receiving portions 20 (20A, 20B, 20C) are connected to each other. The letter-shaped upper opening has the same opening shape.

  In particular, the plurality of connection receiving portions 20 (20A, 20B, 20C) are usually provided at intervals of 20 to 100 cm in the vertical direction. For example, the two U-shaped connection receiving portions 20C are adjacent to each other. In addition, it has a U-shaped receiving portion 29 that is rotated 90 degrees and is separated from the U-shaped receiving portion 28 by 180 degrees, and the U-shaped receiving portion 28 and the U-shaped receiving portion. 29, the connecting portion 28a and the oval punching hole 28b formed in the connecting portion 28a increase the welding length and area, and the meandering end portion 28c and end portion 29c also have the welding length and area. Is to widen. When these are vertically adjacent to each other and fixed at positions rotated by 90 degrees, four U-shaped connection receiving portions 20 having steps are formed.

  Of course, a conventional U-shaped receiving section may be added to the connection receiving section 20 (20A, 20B, 20C). Further, since the connection receiving portion 20 (20A, 20B, 20C) is provided with a plurality of connection receiving portions 20 (20A, 20B, 20C) formed in the same shape with respect to one vertical strut 10, the vertical strut 10 is provided. Unlike only the column main body portion 10A, it does not roll even when placed on the truck bed or leaning on the bed.

The horizontal struts 30 that are paired with two insertion engaging portions 40 inserted and connected to the connection receiving portions 20 (20A, 20B, 20C) at the same height of the vertically arranged vertical struts 10 This is an iron galvanized cylinder in a state where the insertion engaging portion 40 is not joined, and the numerical value is the same as or approximated to the standard of a building having a length of about 90, 180, 270, 360,. It has become.
At both ends, a wedge-shaped insertion engaging portion 40 that engages with the connection receiving portion 20 (20A, 20B, 20C) is welded to form the horizontal strut 30. The insertion engagement portion 40 has the same length in the end direction and has a wedge shape with a taper on the inside. Therefore, the distance between the vertical struts 10 is not changed regardless of the state of coupling with the connection receiving unit 20 (20A, 20B, 20C).
Therefore, even if the insertion engaging portion 40 is driven into the connection receiving portion 20 (20A, 20B, 20C) with a small hammer, a hammer, a hammer or the like, the contact point position of the vertical strut 10 does not move, so the overall shape hardly changes.

  Further, in the horizontal strut 30 of the present embodiment, an L-shaped steel member 33 is welded in the vicinity of the insertion engagement portion 40 welded to both ends of the horizontal strut main body 30A. A long L-shaped steel cut by the thickness of the horizontal strut main body 30A or a value close to it, that is, formed by L-shaped steel having a vertical width of ± 10 mm of the diameter of the horizontal strut 30. It is made by welding. Naturally, the L-shaped steel member 33 is welded in the vicinity of the insertion engaging portion 40 welded to the end portion of the horizontal support column 30 in a chamfered state. The position where the L-shaped steel member 33 is arranged is determined by the width of the steel sheet pile 50 described later.

The horizontal struts 30 have both ends connected to the connection receiving portion 20 (20A, 20B, 20C) at the same height as the vertical struts 10 arranged in pairs, one pair up and down, and the other pair on the opposite side. Are inserted and connected, and are disposed between the vertical struts 10. In addition, the horizontal support | pillar 30 can also be arrange | positioned in the lowest part or uppermost part of the vertical support | pillar 10 which arrange | positioned the connection receiving part 20. FIG. One or more T-shaped steel members 34 are arranged at equal intervals by welding between the L-shaped steel members 33 of the horizontal struts 30. This T-shaped steel member 34 is also formed of T-shaped steel having a vertical width of ± 10 mm that is the diameter of the horizontal strut 30.
A long T-shaped steel member 34 is welded between the L-shaped steel members 33 of the horizontal struts 30 in a chamfered state where the length of the T-shaped steel members 34 cut by the thickness of the horizontal strut main body 30A or a value close thereto is chamfered. The position where the T-shaped steel member 34 is arranged is determined by the width of the steel sheet pile 50 described later.

As shown in FIG. 12, the steel sheet pile 50 generally has a width W between the wide openings, and a direction perpendicular to the width W is called a height H. The length of the L-shaped steel member 33 along the horizontal strut 30 is set to be an interval between the T-shaped steel members 34 slightly larger than the width W, for example, 3 to 15 mm. The thickness of the T-shaped steel member 34 is included in this 3 to 15 mm.
Moreover, the said height H is made into the distance 3-15 mm away from the horizontal support | pillar 30, for example like the former with respect to the height H of the steel sheet pile 50. Since this distance becomes a gap between the steel sheet piles 50, it is desirable that the distance is small, but this leads to difficulty in inserting the steel sheet piles 50 from above. Moreover, since this dimension is controlled by the lower end and upper end of the length of the steel sheet pile 50, the influence is not large.

  As shown in FIG. 12, the steel sheet pile 50 of the present embodiment has a substantially chevron shape, so that the L-shaped steel member 33 and the horizontal struts 30 to T extend from the outer periphery of the horizontal strut 30 in accordance with its height H. The distance to the free end of the shaped steel member 34 is determined, and the height is specified. Moreover, the length direction of the horizontal support | pillar 30 is divided by the thickness of the some T-shaped steel member 34 within the L-shaped steel member 33 of the both ends of the horizontal support | pillar 30, and the steel sheet pile 50 can be inserted freely. The substantially chevron shape of the steel sheet pile 50 shown in FIG. 12 may be one, two, or three, but preferably the L-shaped steel member 33 and the T-shaped steel member 34 projecting greatly from the outer periphery of the horizontal support 30. If there is no. In this sense, the steel sheet pile 50 of the present embodiment is desirably a thin lightweight steel sheet pile.

The horizontal struts 30 are provided with insertion engaging portions 40 at both ends, and the insertion engaging portions 40 are normally inserted vertically downward from above. Both ends are arranged at the same length. When the insertion engaging portion 40 at the end of the horizontal strut 30 is viewed from the end where the horizontal strut 30 is a circle, the L-shaped steel member 33 and the T-shaped steel member 34 are welded and protruded in a direction rotated 90 degrees. ing. The 90-degree rotation position projects the L-shaped steel member 33 and the T-shaped steel member 34 in a direction rotated 90 degrees to the left from the position of the insertion engagement portion 40 at the end of the horizontal strut 30. However, if the other end of the horizontal strut 30 is in front, the L-shaped steel member 33 and the T-shaped steel member are rotated 90 degrees clockwise from the position of the insertion engaging portion 40 at the end of the horizontal strut 30. 34 is projected. That is, the L-shaped steel member 33 and the T-shaped steel member 34 are protruded in a line in a direction rotated 90 degrees to the left from the position of the insertion engagement portion 40 at the end of the horizontal strut 30.
That is, the steel sheet pile 50 passes vertically in the tangential direction of the outer periphery of the horizontal strut 30 parallel to the length direction of the insertion engagement portions 40 at both ends of the horizontal strut 30.
The steel sheet pile guide 80 is formed in the horizontal direction with the horizontal support column 30 as one side, and the length and width of the horizontal support column 30 that allows the steel sheet pile 50 to be inserted and removed in the vertical direction that is the standing direction of the vertical support column 10. The height in the vertical direction with respect to the column 30 is defined. The ends of the L-shaped steel member 33 and the T-shaped steel member 34 opposite to the ends joined to the horizontal strut 30 side are free ends and are released, but part of the free ends. Thus, the height H side of the steel sheet pile 50 is held.

In FIG. 13, the case where the L-shaped steel member 33 and the T-shaped steel member 34 are welded has been described. However, when the present invention is carried out, it can be manufactured by other methods.
In FIG. 14A, the necessary number of partition members 37 are arranged by cutting the surface on the side of the horizontal column 30 with the curvature of the horizontal column 30 and cutting the opposite end into a straight line parallel to the tangent line of the outer periphery of the horizontal column 30. And welded there. At this time, the minimum dimension between the side cut by the curvature of the outer periphery which is the diameter of the horizontal strut 30 of the separating member 37 and the straight tangent line (band member 38) of the outer periphery of the opposite horizontal strut 30 is steel. The width W is set to be 3 to 15 mm larger than the height H of the sheet pile 50. Moreover, the space | interval of the division member 37 is set to the height H 3-15 mm larger than the width W of the steel sheet pile 50, and insertion of the steel sheet pile 50 is easy.

The thickness of the partition member 37 is a gap between adjacent steel sheet piles 50. Therefore, this thickness is set to about 3 to 15 mm. Here, the separating members 37 disposed on the horizontal struts 30 are all welded, and then a straight strip member 38 is welded to the free end. However, when the present invention is implemented, the separating members at both ends are used. 37 can also be integrally formed on the belt-like member 38 side. That is, it can also be manufactured by bending the partition members 37 at both ends of the belt-like member 38 at right angles, welding the partition members 37 except for both ends of the lateral struts 30, and welding the partition members 37 at both ends to the lateral struts 30. .
FIG. 14B shows an example in which a shape corresponding to the partitioning member 37 is formed at both ends of the belt-like member 38A, bent at a right angle, and welded to the partitioning member 37 excluding both ends of the horizontal strut 30. The separator members 37 at both ends can be manufactured by welding to the horizontal struts 30. In addition, the separating member 37 is not provided for each steel sheet pile 50, but the steel sheet piles 50 can be partitioned at two locations.

Thus, the L-shaped steel member 33 and the T-shaped steel member 34 disposed on the horizontal strut 30 described above, or the required number of partition members 37 and strip members 38, or the required number of partition members 37 and the partition members at both ends. The band-shaped member 38 integrally provided with 37 is formed on the outer side of two or more horizontal upper and lower horizontal columns 30 surrounded by at least four horizontal columns 30 with respect to the length direction of the horizontal columns 30. Thus, a steel sheet pile guide 80 having a width W and a height H that allows the steel sheet pile 50 to move up and down in a perpendicular direction is configured. This steel sheet pile guide 80 is formed so that when the steel sheet pile 50 is inserted from above, the steel sheet pile 50 can be easily disposed on the outside of the horizontal support 30 in the rectangular space in plan view without detaching. Has been.
Each of the steel sheet piles 50 is closed by the partition member 37 and the belt-like member 38 to hold the height H side and the width W of the steel sheet pile 50. The end of the partition member 37 opposite to the end joined to the side column 30 is a band-shaped member 38 and is closed. Therefore, when the present invention is carried out, it may be a free end or may be closed, but the configuration of FIG. 14 is preferable in terms of mechanical stability.

In FIG. 14, although formed with a plate material, when implementing this invention, as shown in FIG. 15, it can also comprise with a circular pipe material and / or a column material. The separating member 37 in FIG. 14 is preferably formed of a columnar material or a circular tube material, particularly a circular tube material, and the strip-shaped member 38 in FIG. 14 is preferably a rod-shaped member 39 formed of a columnar material or a circular tube material, particularly a columnar material.
That is, by configuring the partition member 37 with a columnar material or a circular tube material, the outer periphery of the columnar material or the circular tube material becomes a curved surface, and the radius thereof serves as a guide, so that the steel sheet pile 50 can be easily inserted. In addition, when it is separated, it can be processed with a small contact resistance. Nevertheless, the steel sheet pile 50 is guided to a predetermined position on the outer periphery of the separating member 37. Further, the rod-shaped member 39 made of a columnar material or a circular tube material becomes a guide (guide) on its peripheral surface, and is difficult to be deformed by the partition member 37, so that the mechanical strength is also increased.
The steel sheet pile guide 80 is formed in the horizontal direction with the horizontal support 30 as one side, and can be inserted / removed in the vertical direction for each steel sheet pile 50 without connecting adjacent steel sheet piles 50. The width W in the longitudinal direction and the height H in the vertical direction with respect to the horizontal strut 30 are defined.

  As described above, in particular, the partition member 37 can be a round bar or a square bar, but considering the workability of inserting and removing the steel sheet pile 50, it is desirable to use a round bar material such as a circular tube or a cylinder. . Further, if the rod-like member 39 formed of the strip-like member 38 and the columnar member or the circular tube member is the rod-like member 39, it becomes a guide (guide) on the peripheral surface thereof, and is difficult to be deformed by the partition member 37. Since it becomes high, it is desirable to use a round bar material such as a circular tube or a cylinder.

In this embodiment, even if the temporary pile structure of the embodiment of the present invention is formed by the four vertical columns 10 and the eight horizontal columns 30, as shown in FIG. Otherwise, there is a possibility that the parallelogram will be transformed into a rhombus. Therefore, in the present embodiment, a rectangular cut fitting portion 61 is provided at both ends of the L-shaped steel having a predetermined length, and the rectangular fitting portions 61 at both ends are provided 20 from the end of the horizontal support 30. The fire beam 60 is provided at a distance of ˜50 cm to be fixed by being engaged with the fitting portion 71 between the locking member 70 provided.
Here, if the rectangular cut has a width of about 1.1 to 1.5 times that of the L-shaped steel used as the fire striking beam 60, it is possible to perform a fitting fit with little backlash. In addition, when the level | step difference has arisen in the U-shaped connection receiving part 20 mentioned later, since there is a level | step difference in the two horizontal support | pillars 30 of a corner, the rectangular incision of the L-shaped steel used as the fire beam 60 Is preferably about 1.5 times as wide.

  The locking member 70 creates an L-shaped steel member having a width of ± 10 mm of the diameter (thickness) of the horizontal strut 30 at a distance of 20 to 50 cm from the end of the horizontal strut 30, and this is used as the horizontal strut 30. The two sides on the open side are welded and integrated. The locking member 70 has rectangular cuts on both outer surfaces. In addition, rectangular cuts are also provided at both ends of the fire beam 60, and the fitting parts 61 are formed by rectangular cuts of the fire beam 60 arranged at a distance of 20 to 50 cm from the end of the horizontal support column 30. Will be attached to.

Therefore, even if the eight horizontal struts 30, that is, the two horizontal struts 30 within the eight horizontal struts 30 are to cause a change in angle, the two horizontal struts 30 having the locking members 70 and the fire beam 60 are right-angled triangles. The temporary mountain retaining structure of the present embodiment is composed of four vertical struts 10 and eight horizontal struts 30 according to the embodiment of the present invention. The body can be formed and the possibility of deformation as a parallelogram can be eliminated.
However, in the case where the two U-shaped connection receiving portions 20C shown in FIG. 11 are formed into four U-shaped connection receiving portions 20 in two upper and lower stages, the vertical struts 10 are the intersections at right angles. Since there is a step in the horizontal strut 30 of the book, the fire striking beam 60 cannot be disposed horizontally as shown in FIG. However, the error can also be absorbed by adjusting the rectangular cuts at both ends of the fire beam 60. Of course, if an elbow clamp or the like is connected to the end of the fire beam 60 as a free clamp, the connection can be made ignoring the step.

The steel sheet pile 50 used in the embodiment of the present invention is NS-SP-II (Nippon Steel & Sumikin Co., Ltd.).
The experiment was conducted using JFESP-2 (manufactured by JFE Steel Corporation). NS-SP-II and JFESP-2 used in this embodiment both have a steep change in the height H corresponding to the width W. For example, the T-shaped steel member 34 and the L-shaped steel member 33 are free. Since the width of the end side can be narrowed, the above standard was used. However, when carrying out the present invention, LSP-2 type and LSP-3B type (manufactured by JFE Steel Corporation) which are commercially available as lightweight steel sheet piles can also be used.
Therefore, the steel sheet pile 50 used in the embodiment of the present invention is not limited to a special cross-sectional shape, and can generally be used in any case. However, the use of a commercially available lightweight steel sheet pile is preferred.

Next, the construction of the temporary mountain retaining structure of the present embodiment will be described.
First, as shown in FIG. 2, a pit P (hole) necessary for the ground surface is excavated (rooted) by a heavy machine. The pits P have four sides wider than the end of the horizontal support 30 by about 20 to 50 cm or more than the flat area of the temporary pile structure to be assembled. However, a pit P that is as small as possible in the flat area of the temporary mountain structure is desirable.
In particular, with a general purpose heavy machine such as a hydraulic excavator, power shovel, excavator, yumbo, backhoe, etc., a hole larger than the flat area of the temporary mountain structure is excavated (root cut), and four vertical struts 10 are formed. The case where it maintains based on is demonstrated.

Here, as a premise, it is assumed that the condition of the soil for selecting the substantially square base 12 connected to the lower end of the vertical column 10 is selected. Of course, you may use the lower end of the vertical support | pillar 10 without connecting the apex-shaped pile 11 or the substantially square base 12, the jack base 13, or those. The four vertical struts 10 to which the substantially square base 12 is attached are configured from the ground surface conditions.
First, the two vertical struts 10 are erected, and the insertion engaging portions 40 at both ends of the horizontal strut 30 are inserted into the connection receiving portion 20 (20A, 20B, 20C). 30 is connected.

  When the two vertical struts 10 and the horizontal struts 30 are connected, one vertical strut 10 is added in an L shape in plan view to either of the two vertical struts 10 and the length between them is Insertion engaging portions 40 at both ends of the horizontal strut 30 are inserted, and one vertical strut 10 and one horizontal strut 30 are connected. In addition, when the three vertical struts 10 and the two horizontal struts 30 are connected, one vertical strut 10 is added to one of the three vertical struts 10 in plan view and in a U shape. The insertion engaging portions 40 at both ends of the horizontal strut 30 having a length between them are inserted, and one vertical strut 10 and one horizontal strut 30 are additionally connected.

  When the three vertical struts 10 and the three horizontal struts 30 are connected in a U shape in plan view, the insertion engaging portions 40 at both ends of the remaining one horizontal strut 30 are inserted, and one horizontal strut 30 is connected. In addition, when the four vertical struts 10 and the four horizontal struts 30 are connected, the connection of the four bottom horizontal struts 30 is completed. When the three vertical struts 10 and the three horizontal struts 30 are connected in a U-shape in plan view, they are self-supporting, and further, the connection receiving portions 20 (20A, 20A, 20B, 20C), the required number of horizontal struts 30 having a predetermined length are installed.

In FIG. 2 of the present embodiment, the number of steps of the horizontal struts 30 is two. In the pit P, after assembling the four vertical struts 10 and the four horizontal struts 30 of the present embodiment, a wire or the like is hung on the tip of the heavy machine and clamped to the upper part of the steel sheet pile 50 and held. To do. At this time, since the steel sheet pile 50 is not used in a river or the like, it can be a lightweight steel sheet pile (steel sheet pile 50). In addition, normally, the steel sheet pile 50 is processed by a steel sheet pile / steel pipe pile punching method, but in the present embodiment, the steel sheet pile 50 may be moved up and down to a predetermined position. Use is not necessary. However, when the land to be constructed is soft, the mechanical strength is greatly increased by driving the steel sheet pile 50 to a position where excavation (root cutting) is performed and then driving 5 to 20 cm. For this inclusion, the upper end of the steel sheet pile 50 may be pressed or an impact may be applied by a general-purpose heavy equipment shovel such as a hydraulic excavator, a power shovel, an excavator, a jumbo, or a backhoe.
Therefore, the temporary pile structure according to the present embodiment does not require a special machine, so that construction can be performed at low cost. There is no need to generate vibrations even in crowded residential areas. Therefore, there is no influence by construction other than the client's residential area to be constructed.

  As shown in FIGS. 1 to 6, the steel sheet pile 50 is lifted by a heavy machine or lifted by human power, and an L-shaped steel member 33 in which a width W of the steel sheet pile 50 is disposed on a horizontal support 30 having a predetermined length. And the height H of the steel sheet pile 50 is set in the predetermined L-shaped steel member 33 and T-shaped steel member 34. As a result, as shown in FIGS. 4 to 6, the steel sheet pile 50 can descend outside the two or more horizontal struts 30. Moreover, if it descends | falls as it is, the L-shaped steel member 33 and T shape which were arrange | positioned in the other horizontal support | pillar 30 between the L-shaped steel member 33 and the T-shaped steel member 34 arrange | positioned in the horizontal support | pillar 30 of the lower stage. The steel sheet piles 50 can penetrate into the ground by being allowed to pass between the steel members 34 and being lowered. In this state, the steel sheet pile 50 may be driven into the ground.

When each steel sheet pile 50 is vertically lowered in this state, the L disposed between the L-shaped steel member 33 and the T-shaped steel member 34 disposed on the upper horizontal strut 30 and the L disposed on the lower horizontal strut 30. The section steel member 33 and the T-shaped steel member 34 can also pass through, and the steel sheet pile 50 bites into the ground.
In this way, in the present embodiment, at least four vertical struts 10 and 4 × 2 horizontal struts 30 form a skeleton, and steel sheet piles 50 are fitted around the entire periphery to surround the periphery. be able to. Of course, the same applies to four or more vertical columns 10 and eight or more horizontal columns 30.

  However, at this time, the entire circumference is surrounded by the steel sheet pile 50, but a gap of about 3 to 15 mm is generated between the steel sheet piles 50. This gap prevents the earth and sand from flowing into the space formed by the four vertical columns 10 and the 4 × 2 horizontal columns 30, and if there is a flow of water, the flow of water is blocked. It is not a thing. In particular, in the experiments conducted by the applicants of the present application, water veins are rarely present within 1 to 2 m, and are rarely present even on slopes in mountainous areas. When the water vein is cut in this way, there is no problem even if the concrete is hardened by installing a pump for pumping the water or setting a water channel.

  Usually, in the temporary mountain structure according to the present embodiment, the earth and sand are shielded from flowing into the space formed by the four vertical columns 10 and the 4 × 2 horizontal columns 30. This shielding is due to the fact that earth and sand cannot pass through the gap between the steel sheet piles 50 and about 3 to 15 mm, and the movement is blocked by the steel sheet piles 50. On the space side formed by the four vertical struts 10 and the 4 × 2 horizontal struts 30 of the steel sheet pile 50, the horizontal struts 30 function as upsets, and the sediment at the boundary of the pits P dug by heavy machinery collapses. However, there is no influence that flows into the internal space. In particular, the land to be excavated (root-cut) is lump of earth and sand, and since it is gathered, a gap of about 3 to 15 mm cannot pass. Although the earth and sand forming the pit P partially collapse, they are dammed up by the steel sheet pile 50 and do not flow into the internal space.

Therefore, in the temporary pile structure of the present embodiment, for example, in a space formed by four vertical struts 10 and 4 × 2 horizontal struts 30, a water tank, a septic tank, an elevator hoistway, and an elevator machine Even when installing a room, an outdoor unit for air conditioning, a fuel tank, a water pipe, a water supply / sewerage system, etc., the work can be performed safely during construction. Moreover, even if the work to be performed is a buried object and backfilling is performed, the work from the outside is simple, and an efficient work can be performed without reducing the work efficiency.
In the case of disassembling the temporary pile structure according to the present embodiment, the steel sheet pile 50 is extracted, and in this state, the framework of the temporary pile structure is taken out by a heavy machine and then disassembled.

In the above-described example, the temporary mountain retaining structure of the present embodiment has been described in the case where it is disposed in the pit P. For example, the temporary pile structure is formed by four vertical columns 10 and 4 × 2 horizontal columns 30. In the case where the roots are machined to form a foundation in the space, the temporary pile structure according to the present embodiment can be sequentially machined if the lower ends of the four vertical columns 10 are also dug down at the same time.
Moreover, although not shown in figure, the steel sheet pile 50 can also be connected to a length direction like well-known. In this case, the four vertical struts 10 and the 4 × 2 horizontal struts 30 are not fixed, but the length of the four vertical struts 10 is increased for each pair (two). It is possible to increase the number of stages by multiplying by multiples. The 4 × 2 horizontal struts 30 can be correspondingly 4 × 3, 4 × 4, 4 × 5. Of course, the length and height can be changed simultaneously.

Furthermore, the temporary mountain retaining structure of the present embodiment can also be used on the ground when making a machine room or the like for placing concrete on the ground. In particular, it can be used as a guard fence when building a building, and can also be used as a scaffolding and guard fence for construction or as a temporary fence. In this case, the steel sheet pile 50 can be a lightweight steel sheet pile.
In addition, when using it as a guard fence, building scaffolding, building scaffolding / guard fence, and temporary enclosure, since it is lightweight, it is desirable for the steel sheet pile 50 to be a lightweight steel sheet pile.
In this way, it eliminates the possibility of workers burying or burying in the earth and sand as a mountain retaining to prevent the collapse of the earth or sand, or when burying underground buried objects or digging holes for the buried objects It is possible to provide a temporary mountain retaining structure and a temporary mountain retaining method using the steel sheet pile 50 that prevents the earth and sand from collapsing.

The temporary mountain retaining structure of the present embodiment is erected vertically in the vertical direction, is composed of two or more pairs, with two pairs as a minimum unit, and with respect to insertion from above. The vertical support column 10 provided with two or more connection receiving units 20 (20A, 20B, 20C) for receiving the insertion and the connection reception unit 20 (20A, 20B, 20C) and two or more outer sides of the horizontal struts 30 in the horizontal rectangular space surrounded by the horizontal struts 30 and a pair of horizontal struts 30 into which the insertion engaging portions 40 at both ends are inserted and connected. Is provided with a steel sheet pile guide 80 having a width W and a height H that allows the steel sheet pile 50 to move up and down in a direction perpendicular to the length direction of the horizontal strut 30.
In addition, the L-shaped steel member 33 and the T-shaped steel member 34 disposed on the horizontal strut 30, the necessary number of partition members 37 and the strip-shaped member 38, or the necessary number of partition members 37 and the partition members 37 at both ends are integrated. The provided belt-like members 38 are arranged in the direction perpendicular to the length direction of the horizontal struts 30 on the outer sides of two or more horizontal struts 30 in a horizontal rectangular space surrounded by at least four horizontal struts 30. A steel sheet pile guide 80 having a width W and a height H that allows the steel sheet pile 50 to move up and down is configured.

  The temporary pile structure of the above embodiment has four vertical struts 10, 6, 8, etc., with a minimum value of 4 and increases by a multiple of 2. The maximum value is determined by the construction distance. The The vertical strut 10 is provided with two or more stages of connection receiving portions 20 (20A, 20B, 20C) that receive the insertion with respect to the insertion from above. The insertion engaging portions 40 at both ends of the pair of horizontal struts 30 are inserted into the connection receiving portions 20 (20A, 20B, 20C) at the same height of the vertical struts 10 arranged to face each other. In this way, a frame body composed of a frame composed of the vertical struts 10 and the horizontal struts 30 is formed by the four or more vertical struts 10 and the two or more pairs of horizontal struts 30.

Two or more of the horizontal struts 30 have a width and thickness that allows the steel sheet pile 50 to pass only in the vertical direction on one or two or four sides outside the horizontal rectangular space surrounded by the two pairs of horizontal struts 30. Since the steel sheet pile guide 80 is provided, the steel sheet pile 50 can be installed by inserting the steel sheet pile 50 vertically into two or more of the horizontal struts 30. At this time, since the horizontal strut 30 functions as an upset, the earth and sand outside the steel sheet pile 50 do not enter the inside.
In particular, in the experience of the inventors, the water veins are rarely touched on the roads and residential areas, and even on slopes in the mountains, it is possible to touch or cross the water veins with a large amount of water. It is very rare. Most of the water is so oozing that it can be solved by installing a pump disposed at the bottom of excavation (root cutting).

Also, the earth and sand are dammed by the steel sheet piles 50, and the distance between the steel sheet piles 50 is such that a gap of 1 to 2 cm can be formed at the maximum, and the earth and sand are almost surrounded by the two pairs of horizontal struts 30 in the horizontal direction. It does not flow into the rectangular space.
And since the earth and sand dammed up by the steel sheet pile 50 function as an uprising by the required number of vertical columns 10 and horizontal columns 30, the earth and sand are stably dammed up.
Further, the temporary pile structure according to the present embodiment may be dug into the ground after being assembled on the ground, or after being dug up to a predetermined depth using a heavy machine. A Yamadome structure may be installed in the ground. In particular, even when there are devices such as a water tank or a septic tank buried in the ground, it can be set for a long time in the installed state.
Moreover, although the temporary mountain retaining structure of this Embodiment demonstrated in the example which carries out a mountain stop, it can be used also as a temporary enclosure of the scaffold for construction sites. It can also be used as a guard fence.

  For example, when used as a temporary enclosure for a scaffold for a construction site, it is erected vertically in the up-down direction, two pairs, two pairs as a minimum unit, two or more pairs, and from the top Connection receiving portion 20 (20A, 20B, 20C) having two or more stages to receive the insertion, and the connection receiving portion 20 (at the same height of the vertical strut 10 arranged oppositely) 20 </ b> A, 20 </ b> B, 20 </ b> C) of the horizontal struts 30 that form a pair of horizontal struts 30 into which the insertion engaging portions 40 at both ends are inserted and connected, and a horizontal strut 30 surrounded by the horizontal struts 30. Temporary piles having a steel sheet pile guide 80 having a width W and a height H that allow the steel sheet pile 50 to move up and down in a direction perpendicular to the length direction of the horizontal support column 30 on the outer side of the upper and lower two or more. Used for construction site scaffolds such as scaffolding boards, piers, and treads (not shown) Only it needs to be assembling the parts to be.

Conversely, the vertical strut 10 and the horizontal strut 30 can be used in the same manner by constituting the vertical strut 10 and the horizontal strut 30 as parts shared with the parts used in the building site scaffolding.
Moreover, as a guard fence, it is set as the frame | skeleton of the temporary mountain retaining structure of this Embodiment which formed the surrounding surface by the vertical support | pillar 10 and the horizontal support | pillar 30, and the steel sheet pile 50 is inserted in the steel sheet pile guide 80 of only the outer surface. What is necessary is just to comprise the wall surface made. Of course, the corner of the guard fence is formed by attaching the steel sheet pile 50 to the two steel sheet pile guides 80 which are the corners of the skeleton of the temporary pile structure of the present embodiment in which the four columns are formed by the vertical columns 10 and the horizontal columns 30. What is necessary is just to comprise the inserted wall surface.

In the case of a temporary enclosure, the vertical pile 10 and the horizontal column 30 form a four-sided surface as the skeleton of the temporary pile structure of the present embodiment, and the steel sheet pile guide 80 is inserted into the steel sheet pile guide 80 on the four outer surfaces. What is necessary is just to comprise the wall surface made. At this time, if a passage is necessary, the steel sheet pile 50 may be inserted into one side by 50 to 80% and used as a passage.
The temporary pile structure of the present embodiment can be used as a scaffold for a construction site, a temporary fence for a construction site scaffold, a guard fence, a temporary fence, or a garbage pallet. Correspondingly, reinforcement pipes can be added, handrails can be added, ladders and struts can be added.

As described above, in the temporary mountain retaining structure of the present embodiment, the connection receiving portions 20 (20A, 20B, 20C) provided with two or more stages of the vertical support 10 are 180 degrees with respect to the horizontal section of the vertical support 10. And / or a position of 90 degrees, and two or more stages of connection receiving portions 20 (20A, 20B, 20C) are arranged in common.
As described above, the two or more connection receiving portions 20 (20A, 20B, 20C) of the vertical pillar 10 of the temporary pile structure according to the present embodiment are positioned at 180 degrees with respect to the horizontal cross section of the vertical pillar 10 and Since it is arranged at a position of 90 degrees and at least two steps in the longitudinal direction of the vertical support column 10, if one position can be positioned, other positions can be automatically determined, and Since the connection receiving portion 20 (20A, 20B, 20C) does not apply a rotational force to the vertical support column 10, a stable structure can be maintained.

The lower end of the vertical column 10 is formed by connecting one type of a pin-like pile 11, a substantially square base 12, or a jack base 13.
Since the lower end of the vertical column 10 in the temporary pile structure according to the present embodiment is connected to one of the apex pile 11, the substantially square base 12, or the jack base 13, it depends on the land conditions. When it is determined that the soil is soft soil (earth and sand), the lower end of the vertical column 10 is formed into a pointed pile 11 and when it is determined that the soil is solid soil (earth and sand), the lower end of the vertical column 10 is formed into a substantially square shape. In the case where it is necessary to align the height of the vertical struts 10, the jack base 13 can be used to form an arbitrary assembly structure according to the state of the land.

  The steel sheet pile guide 80 disposed on the horizontal strut 30 is formed of an L-shaped steel member whose end is cut at a width of 2 to 10 mm, and a T-shaped steel member that is cut at a width of 2 to 10 mm. It is welded to the horizontal support 30. In particular, the steel sheet pile guide 80 disposed on the horizontal strut 30 in the temporary pile structure according to the present embodiment has an L-shaped steel member 33 whose end is ± 10 mm in width of the diameter of the horizontal strut 30 and the other is the horizontal strut. The steel sheet pile guide 80 can be formed in a relatively light weight because it is formed of a T-shaped steel member 32 having a diameter of 35 mm and a width of ± 10 mm, and is welded to the horizontal support column 35. .

Between the two horizontal struts 30 connected to the vertical strut 10 at an angle of 90 degrees, an L-shaped steel member 33 welded at both ends to the horizontal strut 30 and an L-shaped steel welded at both ends to the two horizontal struts 30. A fire beam 60 is provided so that the angle between the vertical struts 10 between the members 33 is not changed.
Between the two horizontal struts 30 connected to the vertical strut 10 at an angle of 90 degrees in the temporary pile structure of the present embodiment, an L-shaped steel member 33 welded at both ends to the horizontal strut 30 and two Since the fire strut 60 is disposed so that the angle between the L-shaped steel members 33 welded at both ends to the horizontal strut 30 is not changed, the two struts 30 are fixed by the fire strut 60. Therefore, the temporary mountain retaining structure of the present embodiment can be firmly maintained. In particular, in the case of the mountain retaining embedded in the pit P shape of the temporary mountain retaining structure of the present embodiment, it can withstand a large external force. In addition, although the temporary mountain retaining structure of this Embodiment has demonstrated in the example which mounts a mountain, it can be used also as a temporary enclosure of the scaffold for construction sites. Moreover, it can be used as a guard fence and there is no sense of incongruity with a scaffold for a construction site. In particular, the fire striking beam 60 according to the present embodiment is provided with a rectangular cutout at the end, so that the structure is simple and it will not be broken even if handled roughly.

The steel sheet pile guide 80 provided in the horizontal strut 30 is formed by forming an L-shaped steel member and a T-shaped steel member in dimensions that allow the height H and width W of the steel sheet pile 50 to pass through.
Here, the steel sheet pile guide 80 provided in the horizontal support | pillar 30 in the temporary pile structure of this Embodiment is the L-shaped steel member 33 and T-shaped steel in the size which passes the height H and the width W of the steel sheet pile 50. Since the member 32 is formed by welding, the steel sheet pile 50 can be held in the lightest state, which is excellent in weight reduction.

The steel sheet pile guide 80 provided on the horizontal strut 30 is provided with a partition member 37 in the width interval of the steel sheet pile 50 so as to pass the height H and width W of the cross section of the steel sheet pile 50. It welds to the horizontal support | pillar 30, and the other end side is welded to the strip | belt-shaped member 38.
In the steel sheet pile guide 80 provided in the horizontal support 30 in the temporary pile structure of the present embodiment, the partition member 37 is disposed at a width interval through which the height H and the width W of the cross section of the steel sheet pile 50 are passed. Since one of the members 37 is welded to the horizontal strut 30 and the other end is welded to the belt-like member 38, a part of the steel sheet pile guide 80 does not protrude to the outside while having a simple structure. Since they are covered in a belt state, even if they are handled roughly, it is difficult for the dimensions to pass through the height H and the width W of the cross section of the steel sheet pile 50 to be out of order.

The connection receiving portion 20 (20A, 20B, 20C) of the vertical strut 10 is formed by continuously forming four U-shapes in plan view and welding them to the strut body portion 10A.
The connection receiving portion 20 (20A, 20B, 20C) of the vertical strut 10 in the temporary pile structure according to the present embodiment continuously forms four U-shapes in plan view and welds it to the strut body portion 10A. Therefore, four pieces can be arranged continuously, a slit to be welded to the column main body 10A can be formed between them, and the welding area can be widened. Since it is not necessary to handle the individual connection receiving portions individually, welding work can be performed mechanically, and even during use, external force does not concentrate on one point, so that it is difficult for defects to occur.

The connection receiving portion 20 (20A, 20B, 20C) of the vertical strut 10 is formed by continuously forming two U-shapes facing each other in plan view, and welding them to the strut body portion 10A.
The connection receiving portion 20 (20A, 20B, 20C) of the vertical strut 10 in the temporary pile structure according to the present embodiment continuously forms two U-shapes facing each other in plan view, and this is formed into a strut body portion 10A. Is formed by welding a circular arc to the column main body portion 10A of the vertical column 10 at the center, and two U-shapes are formed on both sides. A weld area can be obtained and integrated by welding at both ends. Further, since the welded portion can be relaxed across the arc, the damage to the two U-shaped connection receiving portions 20 (20A, 20B, 20C) can be reduced.

The insertion engaging portions 40 at both ends formed in the horizontal strut 30 are wedge-shaped with the horizontal strut 30 side thicker than the tip.
Since the insertion engaging portions 40 at both ends formed on the horizontal strut 30 in the temporary pile structure of the present embodiment are thicker on the side of the horizontal strut 30 than the front end in a wedge shape, Since the side strut 30 side is thickened, it is easy to assemble.

  The temporary pile method according to the present embodiment is vertically installed in the vertical direction, and the vertical strut 10 composed of two or more pairs with two pairs as a minimum unit is inserted from above. Two or more connection receiving portions 20 (20A, 20B, 20C) that receive the insertion are arranged, and the connection receiving portions 20 (20A, 20B) at the same height of the vertical struts 10 arranged to face each other. 20C), the two insertion engaging portions 40 of the horizontal struts 30 as two pairs are inserted and connected, and one or more of the horizontal struts 30 have a horizontal rectangular space surrounded by the two pairs of horizontal struts 30. On the outside, a steel sheet pile guide 80 is provided at a position rotated 90 degrees from the position of the horizontal strut 30 on which the insertion engaging portion 40 is provided, and the steel sheet pile 50 is placed in a direction perpendicular to the length direction of the horizontal strut 30. It can be moved only in the vertical direction.

  The temporary pile method according to the present embodiment is vertically installed in the vertical direction, and the vertical strut 10 composed of two or more pairs with two pairs as a minimum unit is inserted from above. Two or more connection receiving portions 20 (20A, 20B, 20C) that receive the insertion are arranged, and the connection receiving portions 20 (20A, 20B) at the same height of the vertical struts 10 arranged to face each other. 20C), the two insertion engaging portions 40 of the horizontal struts 30 as two pairs are inserted and connected, and one or more of the horizontal struts 30 have a horizontal rectangular space surrounded by the two pairs of horizontal struts 30. On the outside, a steel sheet pile guide 80 is provided at a position rotated 90 degrees from the position of the horizontal strut 30 on which the insertion engaging portion 40 is provided, and the steel sheet pile 50 is placed in a direction perpendicular to the length direction of the horizontal strut 30. It can be moved only in the vertical direction.

In two or more of the horizontal struts 30 configured in this way, the steel sheet pile 50 is vertically moved in one or two or four directions located outside the horizontal rectangular space surrounded by the two pairs of horizontal struts 30. Since the steel sheet pile guide 80 having the width W and the height H that only passes through is provided, the steel sheet pile 50 can be installed by inserting the steel sheet pile 50 vertically into two or more of the horizontal struts 30. At this time, since the horizontal strut 30 functions as an upset, the earth and sand outside the steel sheet pile 50 do not enter the inside.
In particular, according to the inventors' experience, it is very rare to touch a water vein on mountain roads and residential land, and to touch or cross a water vein with a large amount of water even on a mountain slope. It is. Most of the water is so oozing that it can be solved by installing a pump.
The earth and sand are dammed by the steel sheet piles 50, and the distance between the steel sheet piles 50 is such that a gap of 1 to 2 cm can be formed at the maximum, and the earth and sand are almost surrounded by the two pairs of horizontal struts 30 in the horizontal direction. It does not flow into the rectangular space.

And since the earth and sand dammed up by the steel sheet pile 50 function as an uprising by the required number of vertical columns 10 and horizontal columns 30, the earth and sand are stably dammed up.
Furthermore, the temporary mountain retaining method of the present embodiment may be performed by digging the ground after assembling on the ground, or after digging to a predetermined depth using a heavy machine, You may set up a stop method in the ground. In particular, even when there are devices such as septic tanks buried in the ground, they can be set for a long time in the installed state. Moreover, although the temporary mountain retaining structure of this invention demonstrated in the example which carries out a mountain stop, it can be used also as a temporary enclosure of the scaffold for construction sites. It can also be used as a guard fence.

  In the said embodiment, it demonstrated about forming the frame of a temporary mountain retaining structure by the required number of the vertical support | pillars 10 and the horizontal support | pillar 30, When the length of the steel sheet pile including a lightweight steel sheet pile is insufficient at this time For example, a steel sheet pile including a lightweight steel sheet pile may be connected and used. At this time, it is easier to increase the mechanical strength by driving some of the steel sheet piles including the lightweight steel sheet pile into the ground and not setting the boundary line to a uniform height. Of course, when the joints of steel sheet piles including lightweight steel sheet piles are at the same height, it does not mean that the mechanical strength is too weak.

  Further, the connecting portions 21a, 22a, 23a, 25a, 26a, and 28a are welded to the column main body portion 10A using at least one of an oblong hole, a circular hole, a triangular hole, a rectangular hole, and a slit. is there. Also, the U-shaped receiving parts 21, 22, 23, 24, 25, 26, 27, 28, 29 are connected to the receiving parts 21, 22, 23, 24, 25, 26, 27, 28, 29. When the connecting portions 21a, 22a, 23a, 25a, 26a, and 28a are formed on a single metal plate, the connecting portions 21a, 22a, 23a, 25a, 26a, and 28a may be curved in an arc shape (fan shape) and may have a shape corresponding to a wedge shape from the beginning. Here, the oblong hole, the circular hole, the triangular hole, the rectangular hole, and the slit do not ask an exact shape, but mean an approximate shape.

In addition, when using as a mountain retaining to prevent the collapse of earth and sand in the temporary mountain structure, not only the scene where there is earth and sand on the four sides of the outer circumference, but also when there is earth and sand on one, two or three sides of the outer circumference In addition, the installation of steel sheet piles including lightweight steel sheet piles is not limited to the installation on all four sides, but may be installed on one, two, or three sides.
In particular, when installing steel sheet piles including lightweight steel sheet piles on one side, two sides, and three sides, it is preferable to attach a pointed pile 11 to the lower end of the vertical column 10 and drive it in advance.

And although the steel sheet pile guide 80 provided in the horizontal support | pillar 30 is provided in one outer side of the horizontal support | pillar 30, when implementing this invention, the steel sheet pile guide 80 is provided in the outer side of the both sides of the horizontal support | pillar 30. May be. In particular, when the steel sheet pile guides 80 are provided on the outer sides of the both sides of the horizontal strut 30, the directivity is not questioned, but when it is disposed on one side, the directivity is questioned.
Furthermore, the steel sheet pile guide 80 provided on the horizontal support 30 can have a cross-sectional shape that approximates the outer diameter shape of the steel sheet pile 50. In other words, the steel sheet pile guide 80 disposed on the horizontal support 30 does not ask the cross-sectional shape of the steel sheet pile guide 50 as long as the steel sheet pile 50 can move up and down without much backlash.

  The connecting portions 21a, 22a, 23a, 25a, 26a, 28a formed on a single metal plate and the U-shaped receiving portions 21, 22, 23, 24, 25, 26, 27, 28, 29 are pressed. After punching and bending the receiving portions 21, 22, 23, 24, 25, 26, 27, 28, 29 by processing, any one of an oblong hole, a circular hole, a triangular hole, a rectangular hole, a slit, etc. It is formed by punching using the above, winding it around a mold having the same shape as the column main body 10A, and welding it to the column main body 10A. However, when practicing the present invention, the connecting portions 21a, 22a, 23a, 25a, 26a, 28a and the U-shaped receiving portions 21, 22, 23, 24, 25, 26, 27, 28, 29 are provided. As long as it can be formed, there is no particular limitation on the means for forming.

Although the present invention has been described as an invention related to a mountain retaining that prevents the collapse of earth and sand, when an underground buried object is buried, when it is dug, or when a hole for an underground buried object is dug, workers are buried alive, It relates to a temporary mountain retaining structure that eliminates the possibility of being buried in earth and sand and a temporary mountain retaining method for performing the temporary mountain retaining, and a steel sheet pile that prevents the collapse of earth and sand may be a lightweight steel sheet pile. Further, it may be connected in the length direction.
In the temporary mountain retaining structure of the present embodiment, a step is formed at the upper ends of the required number of vertical struts 10 as shown in FIG. The step of this diameter connects the vertical column 10 upward, and is used as necessary. The small hole is for locking to maintain the state in which the vertical column 10 is connected.

  Further, in the temporary mountain retaining structure of the present embodiment, the two horizontal struts 30 at the corners are fixed by the fire beam 60. However, in the case of carrying out the present invention, although it can be changed as a parallelogram in theory, an external force is considered from the weight of the vertical strut 10 and the horizontal strut 30 and the concentration of the load erected as the vertical strut 10. Since the corner angle of the two horizontal struts 30 hardly changes, it can be omitted or another configuration can be adopted.

DESCRIPTION OF SYMBOLS 10 Vertical support | pillar 10A Support | pillar main-body part 11 Pointed-pile pile 12 Substantially square base 13 Jack base 20,20A, 20B, 20C Connection receiving part 21,22,23,24,25,26,27,28,29 U character Shaped receiving portions 21a, 22a, 23a, 25a, 26a, 28a Connecting portions 21b, 22b, 23b, 25b, 26b, 28b Oval-shaped punching holes 21c, 24c, 25c, 27c, 28c, 29c End portion 30 Horizontal strut 30A Horizontal column main body 33 L-shaped steel member 34 T-shaped steel member 37 Separating member 38 Strip-shaped member 39 Bar-shaped member 40 Inserting engagement portion 50 Steel sheet pile 60 Fire beam 70 Locking member 80 Steel sheet pile guide

Claims (10)

A vertical strut that is erected vertically in the vertical direction and is provided with two or more connection receiving portions connected by insertion;
Horizontal struts in which insertion engaging portions at both ends are inserted into the connection receiving portions at the same height of the vertical struts arranged to face each other, and the connection receiving portions and the insertion engaging portions are connected,
The horizontal strut is formed in the horizontal direction with the horizontal strut as one side, and the width of the horizontal strut in the lengthwise direction is detachable in the vertical direction for each steel sheet pile without sliding connection between adjacent steel sheet piles. A temporary pile retaining structure comprising a steel sheet pile guide that divides a height in a vertical direction with respect to the horizontal strut.   The connection receiving portions arranged in two or more stages on the vertical struts are two to four U-shaped receiving portions with respect to the horizontal section of the vertical struts, and the dimensions of the connection receiving portions are the same. The temporary mountain structure according to claim 1, wherein the temporary mountain structure is provided.   The lower end of the vertical strut is connected to one type of a pin-like pile, a substantially square base, or a jack base for adjusting a ball screw-like distance. Item 3. A temporary mountain retaining structure according to item 2.   The steel sheet pile guides arranged on the horizontal struts are L-shaped steel members whose both end portions have a vertical width in the range of ± 10 mm of the diameter of the horizontal struts, and other portions are in the range of ± 10 mm of the diameter of the horizontal struts. The temporary structure according to any one of claims 1 to 3, wherein the L-shaped steel member and the T-shaped steel member are welded to the horizontal struts. Yamadome structure.   Between the two horizontal struts connected to the vertical strut at an angle of 90 degrees, an L-shaped steel member welded at both ends to the horizontal strut and an L-shaped steel welded at both ends to the two horizontal struts The temporary pile structure according to any one of claims 1 to 4, wherein a fire beam is disposed at an entrance corner so that an angle between the members having the vertical strut as a vertex does not change. body.   The steel sheet pile guide provided in the horizontal strut has a cross-sectional shape that allows the steel sheet pile to pass through without removing the height and width dimensions of the cross section of the steel sheet pile, and is freely movable in the vertical direction. The temporary pile structure according to any one of claims 1 to 5.   The steel sheet pile guide provided on the horizontal strut is provided with a partition member made of a round bar or a square bar in the width interval of the steel sheet pile so as to pass the height and width of the cross section of the steel sheet pile. The temporary pile structure according to any one of claims 1 to 5, wherein one of the members is welded to the horizontal strut and the other end is welded to a belt-like member or a rod-like member. .   The connection receiving portion of the vertical strut is formed by continuously forming four U-shaped receiving portions via an arc portion and welding to the column main body portion of the vertical strut using the arc portion. The temporary mountain retaining structure according to any one of claims 1 to 7, wherein The insertion engaging portions at both ends formed on the horizontal struts have the same distance to the outside of the both end portions of the insertion engaging portions, and the inside of the horizontal struts is changed in a wedge shape rather than the tip. The temporary mountain retaining structure according to any one of claims 1 to 8 , characterized in that it is characterized in that: The vertical struts erected vertically in the vertical direction are provided with two or more connection receiving parts that receive the insertion from the upper direction,
Insertion engaging portions at both ends arranged as two horizontal struts are inserted and connected to the connection receiving portion at the same height of the vertical struts arranged to face each other,
The horizontal strut is formed in the horizontal direction with the horizontal strut as one side, and the width of the horizontal strut in the lengthwise direction is detachable in the vertical direction for each steel sheet pile without sliding connection between adjacent steel sheet piles. A temporary pile-holding method comprising: providing a steel sheet pile guide that divides a height in a vertical direction with respect to the horizontal strut, and passing the steel sheet pile in a vertical direction parallel to the vertical strut.

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