JP7453686B2 - Shoring - Google Patents

Description

The present invention relates to shoring used to support structures at various construction sites, construction sites, etc., and particularly to the technical field of structures in which shoring is constructed by connecting a plurality of pipe materials.

For example, at various construction sites and construction sites, various works are carried out with structures supported by shoring. Commonly used types of shoring include, for example, what is called a square support, which is made by welding connecting members to four pipes, and what is called a square support, which is made of thick steel pipes. It can also support heavy structures.

The above-mentioned square support has four pipes connected by welding and cannot be disassembled, so each support is heavy. Furthermore, steel pipes are generally made thicker and thicker in order to increase the allowable load, so each pipe is heavier. Therefore, in the case of conventional shoring made of square posts or steel pipes, it cannot be transported manually by workers at the site, and can only be handled by cranes or the like. For this reason, it has been impossible to carry conventional square supports and steel pipes into underground pits where it is difficult to install cranes, etc., or into closed rooms such as inside pipes and tanks.

Furthermore, as disclosed in, for example, Patent Documents 1 to 3, it is known to increase the allowable load per shoring by connecting a plurality of pillars using detachable connectors. The support pole of Patent Document 1 is provided with a support connecting fitting for connecting horizontal members or diagonal members. By using this connecting metal fitting for shoring, it is possible to reinforce the shoring with horizontal members and diagonal members without interfering with horizontal connecting members and the like. Further, in Patent Document 2, a horizontal member connecting collar is provided on a support that is erected at a predetermined interval in the horizontal direction, a hole is formed in the horizontal member connecting collar, and a horizontal member with a wedge mechanism is connected to the horizontal member. A shoring structure is constructed by connecting a plurality of supports by engaging them with the holes in the guard. Further, in Patent Document 3, a supporting metal fitting having a wedge hole is provided on a support column, and a plurality of support columns are connected by engaging a horizontal member with the wedge hole to construct a shoring structure.

Japanese Patent Application Publication No. 8-270214 Japanese Patent Application Publication No. 2008-57253 Japanese Patent Application Publication No. 2014-105572

According to the shoring structures disclosed in Patent Documents 1 to 3, since the plurality of supports are connected by detachable connectors, the shoring structures can be easily disassembled and the supports can be transported one by one. becomes possible. In general, in the case of the pillars disclosed in Patent Documents 1 to 3, a single pillar is heavy enough to be transported by hand, so it is difficult for workers to manually transport it to an underground pit or closed room. This improves convenience. Another advantage is that by changing the number of struts to be combined, the allowable load of the shoring can be easily set for each site. Furthermore, it becomes possible to freely arrange the supports according to the shape of the structure to be supported. In other words, there are various advantages to constructing a shoring structure by connecting a plurality of supports using removable connectors.

However, the strength of the connecting parts of the pillars that make up the shoring may be problematic. For example, when constructing a shoring structure by providing a connector that connects the lower ends of multiple columns, the lower ends of the columns are connected by butting against the upper end of the cylindrical member provided on the connector. If the support column and the cylindrical member are misaligned, the end faces will not match each other, and if a large load is applied in this state, it may cause deformation.

The present invention has been made in view of the above, and an object of the present invention is to prevent misalignment at the connecting portions of the columns when constructing a shoring structure by connecting a plurality of columns using removable connectors. The objective is to prevent this and enable the structure to be supported in a stable state.

In order to achieve the above object, the first invention includes a plurality of columns extending in the vertical direction and arranged at intervals from each other in the horizontal direction, and a connector connecting the lower ends of the columns, In the shoring that supports a structure from below, the connector includes a base plate and a plurality of cylindrical members that are fixed to the base plate, protrude upward, and are formed to have approximately the same diameter as the lower end of the support. The lower end of each of the columns is abutted against the upper end of each of the cylindrical members, and the lower end of the column and the upper end of the cylindrical member are separated from the radially outer side of the columns and the cylindrical member. It is characterized by comprising a plurality of clamp members for clamping.

According to this configuration, with the lower end of the column abutted against the upper end of the cylindrical member of the connector, the lower end of the column and the upper end of the cylindrical member are clamped from the outside in the radial direction by one clamp member. be done. That is, since the lower end of the column and the upper end of the cylindrical member are simultaneously clamped by one clamp member, relative movement between the column and the cylindrical member is prohibited. At this time, since the lower end of the column and the upper end of the cylindrical member have approximately the same diameter, the lower end of the column and the upper end of the cylindrical member are aligned, and their end surfaces coincide. This allows the construction of shoring that can withstand even large loads. Moreover, by connecting a plurality of columns with a connector, the relative positional relationship of these columns can be maintained appropriately. Therefore, it becomes possible to support the structure in a stable state.

On the other hand, when the clamp member is removed, the column can be separated from the connector. This allows the shoring to be easily disassembled into individual pillars. Since a single prop can be transported manually, for example, a worker can manually transport the prop to an underground pit or closed room. Furthermore, by changing the number of struts to be combined, it becomes possible to easily set the allowable load of the shoring for each site. Furthermore, it becomes possible to freely arrange the supports according to the shape of the structure to be supported. Also, multiple shoring structures can be connected together. When connecting shoring, a separate cloth material etc. can be used.

In a second aspect of the present invention, the support column includes a first support column and a second support column that are arranged horizontally at a distance from each other, and the cylindrical member includes a first support column with which a lower end of the first support column is abutted. a cylindrical member; and a second cylindrical member against which a lower end of the second support is abutted; a second clamp member that clamps the lower end of the second support column and the upper end of the second cylindrical member; one end of the cloth material is connected to the first clamp member; The second clamp member is characterized in that the other end of the cloth material is connected to the second clamp member.

According to this configuration, the first support column and the second support column can be connected with the cloth material, so that the strength of the shoring can be improved.

In a third aspect of the present invention, the clamp member includes an upper contact portion that contacts the outer peripheral surface of the support column, and a lower contact portion that contacts the outer peripheral surface of the cylindrical member.

According to this configuration, the upper contact portion of the clamp member contacts the outer circumferential surface of the column, and the lower contact portion contacts the outer circumferential surface of the cylindrical member, so that the column and the cylindrical member can be firmly clamped.

In a fourth aspect of the present invention, a plurality of the upper contact portions are provided at intervals in the circumferential direction of the support column, and a plurality of the lower contact portions are provided at intervals in the circumferential direction of the cylindrical member. It is characterized by being

According to this configuration, the plurality of upper abutting portions abut the outer circumferential surface of the column, and the plurality of lower abutting portions abut the outer circumferential surface of the cylindrical member, so that the radial position of the column and the cylindrical member is Matching is ensured.

In a fifth invention, the upper contact portion extends in an arc shape along the outer peripheral surface of the support column, and the lower contact portion extends in an arc shape along the outer peripheral surface of the cylindrical member. It is characterized by the presence of

According to this configuration, the contact area of the upper contact portion with the support column is expanded, and the contact area of the lower contact portion with the cylindrical member is expanded, so that the clamp member is stabilized.

A sixth aspect of the present invention is characterized in that the upper abutting part and the lower abutting part are made of one plate.

According to this configuration, relative positional deviation between the upper abutting part and the lower abutting part can be suppressed, and the support and the cylindrical member can be aligned with high accuracy.

In a seventh invention, the plate member includes an upper plate portion extending in a direction perpendicular to the outer peripheral surface of the support column, a lower plate portion extending in a direction perpendicular to the outer peripheral surface of the cylindrical member, and the upper plate member. and a connecting plate portion extending from the lower plate portion to the lower plate portion, the upper plate portion being provided with the upper abutting portion, and the lower plate portion being provided with the lower abutting portion. .

According to this configuration, the relative positional relationship between the upper side plate part and the lower side plate part can be fixed by the connecting plate part. Furthermore, since the upper plate part, the lower plate part, and the connecting plate part are integrated, the rigidity is increased.

According to the present invention, it is possible to construct a shoring structure by connecting a plurality of pillars using detachable connectors, so that it is possible to transport the shoring structure manually, thereby increasing convenience. The clamp member can prevent misalignment at the connecting portions of the struts, and can support the structure in a stable state by maintaining appropriate spacing between the struts.

FIG. 1 is a perspective view of a shoring structure according to an embodiment of the present invention. FIG. 2 is a perspective view of the lower connector mounted on the H-beam. FIG. 3 is a perspective view of the clamp member seen from above. FIG. 4 is a perspective view of the clamp member seen from below. FIG. 5 is a plan view of the clamp member. FIG. 6 is a bottom view of the clamp member. FIG. 7 is a plan view of the clamp member in an open state. FIG. 8 is a perspective view showing a state in which the lower end of the column and the upper end of the cylindrical member of the lower connector are misaligned. FIG. 9 is an enlarged side view of section A in FIG. 8. FIG. 10 is a perspective view showing a state where the lower end of the column and the upper end of the cylindrical member of the lower connector are clamped by the clamp member. FIG. 11 is a perspective view showing a state in which all four pillars are clamped. FIG. 12 is a perspective view showing a state in which the lower ends of four pillars are connected to each other by a cloth material. FIG. 13 is a perspective view showing a state in which the intermediate portions of four pillars are connected to each other by a cloth material.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. Note that the following description of preferred embodiments is essentially just an example, and is not intended to limit the present invention, its applications, or its uses.

FIG. 1 is a perspective view showing a structure 200 (indicated by imaginary lines) supported by a shoring 1 according to an embodiment of the present invention. The shoring 1 is used, for example, when supporting various structures 200 at various construction sites and construction sites. The structure 200 can be, for example, a concrete formwork used when making concrete floors or beams, and the concrete formwork can be supported by the shoring 1 from the time the concrete is poured until it hardens. . Furthermore, the structure 200 may be, for example, a bridge, and is not particularly limited.

For example, a plurality of supports 1 are constructed to support one structure 200, and these supports 1 are connected. Each support 1 can be constructed by connecting and integrating a plurality of supports 11 to 14 that extend in the vertical direction and are arranged at intervals in the horizontal direction. 15 to 18 can also be constructed in combination. Furthermore, for example, one shoring 1 having four pillars 11 to 14 can be used by arranging them horizontally and connecting them to each other. In this case, a plurality of supports 1 can be arranged in accordance with the shape of the structure 200. For example, the supports 1 can be used by being arranged in a straight line and connected to each other, or one support 1 can be used alone. The number and arrangement of the supports 1 can be arbitrarily set depending on the shape, size, and weight of the structure 1.

In this embodiment, the shoring 1 includes the first to fourth pillars 11 to 14, which are horizontally spaced from each other, but the number of pillars is not limited to four. , may be three or less, or may be five or more. The shoring 1 also includes fifth to eighth pillars 15 to 18 connected above the first to fourth pillars 11 to 14. The fifth support 15 is connected to the first support 11, the sixth support 16 is connected to the second support 12, the seventh support 17 is connected to the third support 13, and the fourth support 14 is connected to the fifth support 15. An eighth pillar 18 is connected to the top. If the height of the shoring 1 can be low, the fifth to eighth pillars 15 to 18 are unnecessary. Further, although not shown, another support may be connected to the fifth to eighth supports 15 to 18.

The first to eighth pillars 11 to 18 are all the same. In this embodiment, the first to fourth pillars 11 to 14 are arranged at substantially equal intervals from each other so as to be located at the vertices of a regular quadrilateral in a plan view, but the shape is not limited to this, and the shapes are rectangular, pentagonal, pentagonal, etc. in a plan view. The supports may be arranged in a polygonal shape such as a hexagonal shape. For example, the first support 11 is made of a metal tube having a circular cross section. The upper end and lower end of the first support column 11 are each open.

The intervals between the first to fourth pillars 11 to 14 are set to be a predetermined interval. The interval between the first to fourth pillars 11 to 14 can be set depending on the weight of the structure 200. For example, the heavier the structure 200, the narrower the interval between the first to fourth pillars 11 to 14. is preferable. The interval between the first to fourth pillars 11 to 14 can be set, for example, to 150 mm to 250 mm, and in this embodiment is set to 200 mm.

The shoring 1 includes a lower end connector 30 that connects the lower ends of the first to fourth pillars 11 to 14, and an upper end connector 40 that connects the upper ends of the fifth to eighth pillars 15 to 18. It further includes a jack 50. The jack 50 can be placed on an H-shaped steel 300 or the like as a support member. Note that the jack 50 may be omitted.

The jack 50 is for adjusting the height of the first to fourth pillars 11 to 14, and has a conventionally known structure. That is, the jack 50 has a base 51, a screw shaft 52 extending upward from the base 51, and a movable portion 53 that is screwed into the screw shaft 52. A base 51 is installed on the upper surface of the H-shaped steel 300. The height of the movable part 53 can be changed by rotating the movable part 53 while being screwed onto the screw shaft 52. The upper surface of the movable portion 53 extends substantially horizontally, and the lower end connector 30 is placed and fixed on the upper surface of the movable portion 53 as described later.

As shown in FIG. 2, the lower end connector 30 includes a substrate 30a extending in the horizontal direction, first to fourth cylindrical members 31 to 34 fixed to the substrate 30a and protruding upward from the substrate 30a, and reinforcements. It has a member 35. The substrate 30a is a portion fixed to the jack 50, and has a nearly rectangular shape in plan view. The upper side of the screw shaft 52 of the jack 50 passes through the center of the board 30a. Further, the board 30a is fastened and fixed to the movable part 53 of the jack 50 by a fastening member (not shown).

The first to fourth cylindrical members 31 to 34 are made of metal tubes formed to have approximately the same diameter as the lower end portions of the first to fourth columns 11 to 14 constituting the shoring 1. It is arranged to match the arrangement position of the fourth pillars 11 to 14. That is, as shown in FIG. 1 and the like, the first cylindrical member 31 is arranged directly below the first column 11, and the lower end of the first column 11 is butted against the upper end of the first cylindrical member 31. There is. Since the lower end of the first support 11 and the upper end of the first cylindrical member 31 have approximately the same diameter, the entire circumference of the lower end of the first support 11 abuts the entire circumference of the upper end of the first cylindrical member 31. It looks like this. Similarly, the second cylindrical member 31 is arranged directly below the second column 12 so that the lower end of the second column 12 abuts against the upper end of the second cylindrical member 32, and the third cylindrical member 33 is The fourth cylindrical member 34 is disposed directly below the third column 13 so that the lower end of the third column 13 abuts against the upper end of the third cylindrical member 33. The lower end of the fourth support column 14 is abutted against the upper end of the fourth cylindrical member 34 .

As shown in FIG. 2, four reinforcing members 35 are provided. Each reinforcing member 35 is made of a plate material fixed to the upper surface of the substrate 30a and the outer surfaces of the first to fourth cylindrical members 31 to 34, and is arranged so as to protrude upward from the upper surface of the substrate 30a. ing. Both ends of the reinforcing member 35 are fixed to the outer surfaces of the adjacent cylindrical members 31 to 34, and each reinforcing member 35 connects the cylindrical member 31 and the cylindrical member 32, the cylindrical member 32 and the cylindrical member 33, and the cylindrical member 33 and the cylindrical member. 34, the cylindrical member 31 and the cylindrical member 34 are connected. This prevents the first to fourth cylindrical members 31 to 34 from falling down.

As shown in FIG. 1, the upper end connector 40 has the same structure as the lower end connector 30, and can be used as the upper end connector 40 by turning the lower end connector 30 upside down. It is now possible to do so. That is, the upper end connector 40 includes a substrate 40a extending in the horizontal direction, and first to fourth cylindrical members 41 to 43 (the fourth cylindrical member is not shown) that are fixed to the substrate 40a and protrude downward from the substrate 40a. ) and a reinforcing member (not shown).

Note that the substrate 40a of the upper end connector 40 supports the structure 200 directly or with another member interposed therebetween. Further, a jack (not shown) can also be provided above the board 40a.

The shoring 1 includes first to fifth clamp members 71 to 75. The first clamp member 71 is a member for clamping the lower end of the first support 11 and the upper end of the first cylindrical member 31 from the outside in the radial direction of the support 11 and the cylindrical member 31. Similarly, the second clamp member 72 clamps the lower end of the second column 12 and the upper end of the second cylindrical member 32 from the outside in the radial direction, and the third clamp member 73 clamps the lower end of the second column 12 and the upper end of the second cylinder member 32 . The lower end portion and the upper end portion of the third cylindrical member 33 are clamped from the outside in the radial direction, and the fourth clamp member 74 clamps the lower end portion of the fourth column 14 and the upper end portion of the fourth cylindrical member 34 in the radial direction. This is a member that clamps from the outside.

While one each of the first to fourth clamp members 71 to 74 is provided, a plurality of fifth clamp members 57 are provided. The fifth clamp members 57 include those installed at intermediate portions of each of the columns 11 to 18. Furthermore, like the first to fourth clamp members 71 to 74, the fifth clamp member 57 clamps the upper end of the first support 11 and the lower end of the fifth support 15, and the one that clamps the upper end and the lower end of the sixth pillar 16; one that clamps the upper end of the third pillar 13 and the lower end of the seventh pillar 17; and one that clamps the upper end of the fourth pillar 14 and the lower end of the eighth pillar 18. It includes something to clamp the bottom end.

In this example, the lower ends of the first to fourth pillars 11 to 14 are abutted to the upper ends of the fifth to eighth pillars 15 to 18, respectively, and clamped by the fifth clamp member 75 to connect them. ing. This connection structure is similar to the connection structure for the lower end connectors 30 of the first to fourth pillars 11 to 14. Further, although not shown, the connection structure between the upper ends of the fifth to eighth pillars 15 to 18 and the upper end connector 40 can be similar, but as another connection structure, for example, A structure in which the upper ends of the eight pillars 15 to 18 are inserted into the first to fourth cylindrical members 41 to 44 of the upper end connector 40 may be applied.

The first to fifth clamp members 71 to 75 are all the same. Hereinafter, the structure of the first clamp member 71 will be explained in detail based on FIGS. 3 to 7. The first clamping member 71 rotates the first clamping member 80 and the second clamping member 90 for clamping the column 11 and the first cylinder member 31 in the radial direction, and the first clamping member 80 and the second clamping member 90. It includes a connecting member 100 that can be connected together, and a fastening member 110 that connects the first holding member 80 and the second holding member 90. The first clamping member 80 and the second clamping member 90 are arranged on one side in the radial direction (horizontal direction) of the first strut 11 and the first cylindrical member 31 with respect to the outer peripheral surfaces of the first strut 11 and the first cylindrical member 31, and By abutting each other from the other side, the first support 11 and the first cylindrical member 31 can be clamped in the radial direction.

In the description of this embodiment, when the first clamp member 71 is in use, the lower side is simply referred to as "lower", and the upper side is simply referred to as "upper". Further, the side of the first clamping member 80 and the second clamping member 90 that are connected by the connecting member 100 is referred to as the "base end side" of the first clamping member 80 and the second clamping member 90, and The side of the second clamping member 90 opposite to the side connected by the connecting member 100 is referred to as the "tip side" of the first clamping member 80 and the second clamping member 90. The distal ends of the first clamping member 80 and the second clamping member 90 correspond to one end side, and the proximal ends of the first clamping member 80 and the second clamping member 90 correspond to the other end side. Defining the direction of the first clamp member 71 in this way is only for the convenience of explanation, and does not limit the usage state of the first clamp member 71. It is also possible to use member 71.

Moreover, FIGS. 3 to 6 show the case where the first clamping member 71 is in a use state (clamped state), and FIG. 7 shows the case where the distal ends of the first clamping member 80 and the second clamping member 90 are separated from each other. A state in which the first clamping member 80 and the second clamping member 90 are rotated in the direction is shown. The state shown in FIG. 7 can be called an open state.

(Configuration of first holding member 80)
The first holding member 80 connects the first to third upper side plate parts 81a, 81b, 81c (shown in FIG. 3) and the first to third lower side plate parts 82a, 82b, 82c (shown in FIG. 4). It includes a plate part 83 and a vertical plate part 84. The first to third upper plate parts 81a, 81b, 81c, the first to third lower plate parts 82a, 82b, 82c, the connecting plate part 83, and the vertical plate part 84 are made of a single metal plate (for example, It can be obtained by press forming a steel plate, etc.). The first to third upper plate portions 81a, 81b, and 81c are provided at intervals from each other in the circumferential direction of the first support 11 (the outer shape is shown by imaginary lines in FIG. 5). It extends in a direction perpendicular to the outer peripheral surface. The first upper plate part 81a is located on the base end side of the first clamping member 80, the third upper plate part 81c is located on the distal end side of the first clamping member 80, and the second upper plate part 81b is located on the first upper side plate part 81b. It is located between the portion 81a and the third upper plate portion 81c.

The first to third lower plate portions 82a, 82b, and 82c are provided at intervals from each other in the circumferential direction of the first cylindrical member 31 (the outer shape is shown by imaginary lines in FIG. 6). It extends in a direction perpendicular to the outer peripheral surface of 31. The first lower plate part 82a is located on the proximal end side of the first clamping member 80, the third lower plate part 82c is located on the distal end side of the first clamping member 80, and the second lower plate part 82b is located on the first lower side plate part 82b. It is located between the portion 82a and the third lower plate portion 82c.

As shown in FIGS. 3 and 4, the connecting plate portion 83 extends in the vertical direction from the first to third upper plate portions 81a, 81b, 81c to the first to third lower plate portions 82a, 82b, 82c. , which connects the upper plate parts 81a, 81b, 81c and the lower plate parts 82a, 82b, 82c.

A vertical plate portion 84 is provided at the tip of the connecting plate portion 83 . This vertical plate portion 84 extends in the vertical direction and projects outward in the radial direction. A shaft insertion notch 84a is provided in the vertically intermediate portion of the vertical plate portion 84.

As shown in FIG. 3, an insertion hole 85 into which a wedge of cloth material 61 (described later) can be inserted is formed between the first upper plate part 81a and the second upper plate part 81b. Further, an insertion hole 86 into which a wedge of the cloth material 61 can be inserted is also formed between the second upper side plate part 81b and the third upper side plate part 81c. The shape and size of the insertion holes 85 and 86 can be arbitrarily set according to the shape of the wedge of the cloth material 61. The insertion holes 85 and 86 may be formed as notches, may be formed as through holes, or may have a pocket-like shape.

As shown in FIG. 5, the tip surfaces of the first to third upper plate portions 81a, 81b, and 81c are the first to third upper contact portions 81d, 81e, and 81f that abut the outer circumferential surface of the first support column 11, respectively. It is said that The first to third upper contact portions 81d, 81e, and 81f are provided at intervals from each other in the circumferential direction of the first support 11, and are configured to contact portions of the outer peripheral surface of the first support 11 that are separated from each other. It has become. The first to third upper contact parts 81d, 81e, and 81f are arcuate surfaces extending in an arc shape along the outer peripheral surface of the first support 11, and are located on the same circle centered on the axis of the first support 11. It is formed to do so.

Further, an insertion hole 85 into which the cloth material 61 can be inserted is also formed between the first lower side plate part 82a and the second lower side plate part 82b. Further, an insertion hole 86 into which a wedge of the cloth material 61 can be inserted is also formed between the second lower side plate part 82b and the third lower side plate part 82c. The upper insertion hole 85 and the lower insertion hole 85 are arranged at the same position in the circumferential direction. The same applies to the insertion hole 86.

As shown in FIG. 6, the tip surfaces of the first to third lower plate portions 82a, 82b, and 82c are connected to the first to third lower contact portions 82d and 82e, which contact the outer circumferential surface of the first cylindrical member 31, respectively. , 82f. The first to third lower contact portions 82d, 82e, and 82f are provided at intervals in the circumferential direction of the first cylindrical member 31, and are located at mutually separated portions on the outer peripheral surface of the first cylindrical member 31. They are designed to touch each other. The first to third lower contact portions 82d, 82e, and 82f are arcuate surfaces that extend in an arc shape along the outer peripheral surface of the first cylindrical member 31, and are the same circle centered on the axis of the first cylindrical member 31. It is formed to be located above. Furthermore, when viewed from the vertical direction, the first to third lower contact parts 82d, 82e, 82f and the first to third upper contact parts 81d, 81e, 81f are arranged so as to overlap with each other. There is.

First to third upper plate parts 81a, 81b, 81c having first to third upper contact parts 81d, 81e, 81f, and first to third upper plate parts 81a, 81b, 81c having first to third lower contact parts 82d, 82e, 82f. ~ Since the third lower side plate parts 82a, 82b, 82c are made of one plate material, the first to third upper side contact parts 81d, 81e, 81f and the first to third lower side contact parts 82d, 82e , 82f are composed of one plate.

(Configuration of second holding member 90)
The second holding member 90 includes first to third upper plate portions 91a to 91c (shown in FIG. 3), first to third lower plate portions 92a to 92c (shown in FIG. 4), and a connecting plate portion 93. , and a pair of support plate portions 94. The first to third upper plate parts 91a, 91b, 91c, the first to third lower plate parts 92a, 92b, 92c, the connecting plate part 93, and the support plate part 94 are similar to the first holding member 80. It can be obtained from a single metal plate. The first to third upper plate portions 91a, 91b, and 91c are provided at intervals from each other in the circumferential direction of the first support 11 (the outer shape is shown by a virtual line in FIG. 5). It extends in a direction perpendicular to the outer peripheral surface. The first upper plate part 91a is located on the proximal end side of the second clamping member 90, and is close to the first upper plate part 81a of the first clamping member 80. The third upper plate portion 91c is located on the tip side of the first clamping member 80, and is close to the third upper plate portion 81c of the second clamping member 90. The second upper plate part 91b is located between the first upper plate part 91a and the third upper plate part 91c.

The first to third lower plate portions 92a, 92b, and 92c are provided at intervals from each other in the circumferential direction of the first cylindrical member 31 (the outer shape is shown by a virtual line in FIG. 6). It extends in a direction perpendicular to the outer peripheral surface of 31. The first lower plate portion 92a is located on the base end side of the second clamping member 90, and is close to the first lower plate portion 82a of the first clamping member 80. The third lower plate portion 92c is located on the distal end side of the second clamping member 90, and is close to the third upper plate portion 82c of the first clamping member 80. The second lower plate portion 92b is located between the first lower plate portion 92a and the third lower plate portion 92c.

The connecting plate portion 93 extends in the vertical direction from the first to third upper plate portions 91a, 91b, 91c to the first to third lower plate portions 92a, 92b, 92c, and is connected to the upper plate portions 91a, 91b, 91c. This is a portion that connects the lower plate portions 92a, 92b, and 92c.

A pair of support plate parts 94, 94 are provided at the distal end of the connecting plate part 93, spaced apart from each other in the vertical direction. The support plate portions 94, 94 protrude outward in the radial direction and are substantially parallel to each other.

An insertion hole 95 into which a wedge of the cloth material 61 can be inserted is formed between the first upper plate part 91a and the second upper plate part 91b. Moreover, an insertion hole 96 into which a wedge of the cloth material 61 can be inserted is also formed between the second upper side plate part 91b and the third upper side plate part 91c.

As shown in FIG. 5, the tip surfaces of the first to third upper plate parts 91a, 91b, and 91c are the first to third upper contact parts 91d, 91e, and 91f that contact the outer peripheral surface of the first support column 11, respectively. It is said that The first to third upper contact portions 91d, 91e, and 91f are provided at intervals from each other in the circumferential direction of the first support 11, and are configured to contact mutually distant portions of the outer peripheral surface of the first support 11. It has become. The first to third upper contact portions 91d, 91e, and 91f are arcuate surfaces extending in an arc shape along the outer peripheral surface of the first support 11.

Moreover, an insertion hole 95 into which a wedge of the cloth material 61 can be inserted is also formed between the first lower side plate part 92a and the second lower side plate part 92b. Further, an insertion hole 96 into which a wedge of the cloth material 61 can be inserted is also formed between the second lower side plate part 92b and the third lower side plate part 92c. The insertion holes 95, 96 can be configured similarly to the insertion holes 85, 86 of the first holding member 80, and all the insertion holes 85, 86, 95, 96 have the same shape and size. be able to.

As shown in FIG. 6, the tip surfaces of the first to third lower plate portions 92a, 92b, and 92c are connected to the first to third lower contact portions 92d and 92e that abut the outer circumferential surface of the first cylindrical member 31, respectively. , 92f. The first to third lower contact portions 92d, 92e, and 92f are provided at intervals from each other in the circumferential direction of the first cylindrical member 31, and are located at mutually separated portions on the outer peripheral surface of the first cylindrical member 31. They are designed to touch each other. The first to third lower contact portions 92d, 92e, and 92f are arcuate surfaces extending in an arc shape along the outer peripheral surface of the first cylindrical member 31. When viewed from the top and bottom, the first to third lower contact portions 92d, 92e, and 92f and the first to third upper contact portions 91d, 91e, and 91f are arranged to overlap with each other. The first to third upper contact portions 91d, 91e, and 91f and the first to third lower contact portions 92d, 92e, and 92f are composed of one plate.

(Configuration of connecting member 100)
As shown in FIGS. 3 and 4, the connecting member 100 can be made of, for example, a round bar made of metal, and extends in the vertical direction. The upper part of the connecting member 100 passes through the first upper plate part 81a of the first clamping member 80 and the first upper plate part 91a of the second clamping member 90. That is, although not shown, the first upper plate part 81a of the first clamping member 80 and the first upper plate part 91a of the second clamping member 90 have through holes through which the upper part of the connecting member 100 can be inserted. The connecting member 100 is inserted into these through holes and is prevented from coming off by caulking or the like.

Further, the lower portion of the connecting member 100 passes through the second lower plate portion 82a of the first clamping member 80 and the second lower plate portion 92a of the second clamping member 90. Similarly to the upper side, the connecting member 100 is inserted into a through hole (not shown) formed in the second lower plate part 82a of the first clamping member 80 and the second lower plate part 92a of the second clamping member 90. In this state, it is secured by caulking etc.

With the connecting member 100 inserted into each of the through holes, the first clamping member 80 can be rotated around the center line of the connecting member 100 with respect to the second clamping member 90, and the second clamping member 90 can be rotated with respect to the second clamping member 90. The connecting member 100 can be rotated about the center line with respect to the first holding member 80. Thereby, the open state shown in FIG. 7 can be achieved.

(Configuration of fastening member 110)
The fastening member 110 includes at least a fastening shaft portion 111, a nut 112, and a support shaft 113. As shown in FIG. 3 and the like, a large diameter portion 111a is formed at the base end portion of the fastening shaft portion 111. The portion of the fastening shaft portion 111 other than the large diameter portion 111a is constituted by a threaded rod having continuous thread grooves formed on its outer circumferential surface, and may be constituted by, for example, the shaft portion of a bolt. The nut 112 is a member that is screwed onto the fastening shaft portion 111. The flange portion 112a of the nut 112 comes into contact with the peripheral edge of the shaft insertion notch 84a in the vertical plate portion 84.

The support shaft 113 is a member for rotatably supporting the large diameter portion 111a of the fastening shaft portion 111 relative to the distal end side of the second holding member 90. The support shaft 113 is made of a round bar extending in the vertical direction like the connecting member 100 described above. The upper portion of the support shaft 113 passes through the upper support plate portion 94. That is, the upper support plate portion 94 is formed with an insertion hole (not shown) through which the upper portion of the support shaft 113 can be inserted. The upper part of the support shaft 113 is inserted into this insertion hole, and in this inserted state, the support shaft 113 can rotate around the center line of the support shaft 113 relative to the upper support plate portion 94. It has become. The upper end of the support shaft 113 is prevented from coming off by caulking.

The lower portion of the support shaft 113 passes through the lower support plate portion 94. That is, the lower support plate portion 94 is formed with an insertion hole (not shown) through which the lower portion of the support shaft 113 can be inserted. The lower part of the support shaft 113 is inserted into this insertion hole, and in this inserted state, the support shaft 113 rotates around the center line of the support shaft 113 relative to the lower support plate portion 94. It is possible. The lower end of the support shaft 113 is prevented from coming off by caulking.

By rotating the fastening shaft part 111, the fastening shaft part 111 can be inserted into the shaft insertion notch 84a of the vertical plate 84 as shown in FIG. The state where the portion 111 is removed from the shaft insertion notch 84a of the vertical plate 84 can be changed. When the nut 112 is tightened with the fastening shaft portion 111 inserted into the shaft insertion notch 84a of the vertical plate member 84, the distal end side of the first clamping member 80 and the distal end side of the second clamping member 90 approach each other. It is fastened in the direction.

(Composition of cloth material)
As shown in FIG. 1, the shoring 1 includes first to fifth cloth materials 61 to 65 as a plurality of cloth materials. The first to fifth cloth materials 61 to 65 are the same, and each extends in the horizontal direction, and wedges that project downward are provided at both ends.

The first cloth material 61 connects the first support column 11 and the second support column 12 via the first clamp member 71 and the second clamp member 72 . Specifically, one wedge of the first cloth material 61 is inserted into the insertion holes 85 and 95 (or insertion holes 86 and 96) of the first clamp member 71, and the other wedge is inserted into the insertion holes 86 and 96 of the second clamp member 72. It is inserted into an insertion hole (not shown). Thereafter, in the same manner, the second cloth material 62 connects the second support column 12 and the third support column 13 via the second clamp member 72 and the third clamp member 73. The third cloth material 63 connects the third support column 13 and the fourth support column 14 via the third clamp member 73 and the fourth clamp member 74. The fourth cloth material 64 connects the first support column 11 and the fourth support column 14 via the first clamp member 71 and the fourth clamp member 74 . Furthermore, the fifth cloth material 65 connects the adjacent columns 11 to 18 with each other via a fifth clamp member 75 disposed at an intermediate portion of the columns 11 to 18.

The horizontal dimension of the first to fifth cloth materials 61 to 65 is set to a length corresponding to the spacing between adjacent columns 11 to 14 and 15 to 18. The distances between adjacent columns 11-14, 15-18 are set to be a predetermined distance depending on the horizontal lengths of the first to fifth cloth materials 61-65.

(Construction of shoring 1)
Next, a case will be described in which the shoring 1 configured as described above is constructed. As mentioned above, the materials constituting one shoring 1 include the first to eighth supports 11 to 18, the lower end connector 30, the upper end connector 40, and the first to fifth clamp members 71 to 75. , the first to fifth cloth members 61 to 65, and the jack 50.

As shown in FIG. 2, a jack 50 is installed on the H-shaped steel 300, and the lower end connector 30 is fixed on the jack 50. Thereafter, as shown in FIG. 8, the first support 11 is connected to the first cylindrical member 31 of the lower end connector 30. At this time, the lower end of the first support 11 is brought into contact with the upper end of the first cylinder member 31, and as shown in FIG. 9, the axis C of the first support 11 and the axis B of the first cylinder member 31 are may be deviated in the radial direction. If the axis B and the axis C are deviated in the radial direction, the contact area between the lower end of the first column 11 and the upper end of the first cylindrical member 31 becomes small, and when a large vertical load is applied, the first There is a possibility that the lower end of the support column 11 and the upper end of the first cylindrical member 31 may be deformed.

In this embodiment, as shown in FIG. 10, the first clamp member 71 clamps the lower end of the first support column 11 and the upper end of the first cylindrical member 31 from the outside in the radial direction. When clamping, first, the first clamp member 71 is opened as shown in FIG. Then, the first clamping member 80 and the second clamping member 90 sandwich the lower end of the first support column 11 and the upper end of the first cylindrical member 31 in the radial direction. rotate relatively. Next, the fastening shaft portion 111 is inserted into the shaft insertion notch 84a of the vertical plate member 84, and then the nut 112 is tightened.

By clamping the lower end of the first support 11 and the upper end of the first cylindrical member 31 from the outside in the radial direction, the axis C of the first support 11 and the axis B of the first cylindrical member 31 are aligned. Can be done. As a result, the lower end of the first support column 11 and the upper end of the first cylindrical member 31 are aligned, and their end surfaces coincide with each other, so that even if a large load is applied, it can sufficiently withstand. In addition, the work is simple because it is only clamped with the first clamp member 71.

As shown in FIG. 11, the second to fourth columns 12 to 14 can be connected to the second to fourth cylindrical members 32 to 34 by the second to fourth clamp members 72 to 74, so that the first column 11 As in the case of connection, alignment can be easily performed.

Thereafter, as shown in FIG. 12, the first to fourth support columns 11 to 14 are connected by the first to fourth cloth materials 61 to 64. Further, as shown in FIG. 13, a fifth clamp member 75 is attached above the first to fourth clamp members 71 to 74.

Thereafter, the four fifth clamp members 75 are connected by the fifth cloth material 65. Further, as shown in FIG. 1, a fifth clamp member 75 can be further attached to each of the pillars 11 to 14 and connected by a fifth cloth material 65 in the same manner.

Further, when connecting the first to fourth columns 11 to 14 and the fifth to eighth columns 15 to 18, they can be connected by a fifth clamp member 75 in the same manner as the first to fourth clamp members 71 to 74. . Further, the upper ends of the fifth to eighth pillars 15 to 18 can be connected to each other by the upper end connector 40.

The shoring 1 can be constructed as described above. The shoring 1 can basically be constructed by attaching the first to fifth clamp members 71 to 75 and the first to fifth cloth members 61 to 65, and since no welding is required, it can be constructed on site. Easy to construct and disassemble. When the shoring 1 is disassembled, the struts 11 to 18 are not connected, and therefore these struts 11 to 18 can be easily separated.

(Operations and effects of embodiments)
As explained above, according to this embodiment, in a state where the lower ends of the columns 11 to 14 are abutted against the upper ends of the cylindrical members 31 to 34 of the lower end connector 30, the lower ends of the columns 11 to 14 and the upper ends of the cylindrical members 31 to 34 are clamped from the outside in the radial direction by clamp members 71 to 74. At this time, since the lower ends of the columns 11 to 14 and the upper ends of the cylindrical members 31 to 34 have approximately the same diameter, the lower ends of the columns 11 to 14 and the upper ends of the cylindrical members 31 to 34 are aligned. The end faces match each other. Thereby, the shoring 1 is constructed which can sufficiently withstand even when a large load is applied. Furthermore, by connecting the plurality of columns 11 to 14 with the lower end connector 30, the relative positional relationship of the columns 11 to 14 can be maintained appropriately. Therefore, it becomes possible to support the structure 200 in a stable state.

On the other hand, by removing the clamp members 71 to 74, the columns 11 to 14 can be separated from the lower end connector 30. Thereby, the shoring 1 can be easily disassembled into individual pillars. Since a single support can be transported manually, for example, a worker can manually transport the support into an underground pit or a closed room. Furthermore, by changing the number of struts 11 to 18 to be combined, it becomes possible to easily set the allowable load of the shoring 1 for each site. Furthermore, it becomes possible to freely arrange the supports 11 to 18 according to the shape of the structure 200 to be supported.

The embodiments described above are merely illustrative in all respects and should not be interpreted in a limiting manner. Furthermore, all modifications and changes that come within the scope of equivalents of the claims are intended to be within the scope of the present invention.

As explained above, the shoring according to the present invention can be used, for example, when supporting structures at various construction sites and construction sites.

1 Shoring 11 to 14 First to fourth pillars 30 Lower end connectors 31 to 34 First to fourth cylindrical members 71 to 74 First to fourth clamp members 81a, 81b, 81c First to third upper plate parts 81d, 81e, 81f First to third upper contact parts 82a, 82b, 82c First to third lower plate parts 82d, 82e, 82f First to third lower contact parts 83 Connection plate part

Claims (4)

A shoring structure that supports a structure from below, comprising a plurality of columns extending in the vertical direction and arranged at intervals from each other in the horizontal direction, and a connector connecting the lower ends of the columns,
The connector includes a base plate, and a plurality of cylindrical members fixed to the base plate, protruding upward, and having approximately the same diameter as the lower end of the support column,
A lower end of each of the pillars is abutted against an upper end of each of the cylindrical members,
comprising a plurality of clamp members that clamp the lower end of the support and the upper end of the cylindrical member from the outside in the radial direction of the support and the cylindrical member;
The clamp member includes an upper contact portion that contacts the outer peripheral surface of the column, and a lower contact portion that contacts the outer peripheral surface of the cylindrical member, and the upper contact portion and the lower contact portion , consists of one board,
The plate member includes an upper plate portion extending in a direction perpendicular to the outer circumferential surface of the support column, a lower plate portion extending in a direction perpendicular to the outer circumferential surface of the cylindrical member, and from the upper plate portion to the lower plate portion. A connecting plate portion extending up to
The upper abutting portion is provided on the upper plate portion,
A shoring structure, characterized in that the lower abutment portion is provided on the lower plate portion. In the shoring according to claim 1,
The strut includes a first strut and a second strut that are spaced apart from each other in the horizontal direction,
The cylindrical member includes a first cylindrical member against which the lower end of the first support is abutted, and a second cylindrical member against which the lower end of the second support is abutted,
The clamp member clamps the lower end of the first support and the upper end of the first cylindrical member, and the clamp member clamps the lower end of the second support and the upper end of the second cylindrical member. a second clamp member,
A shoring structure, wherein one end of a cloth material is connected to the first clamp member, and the other end of the cloth material is connected to the second clamp member. In the shoring according to claim 1,
The upper contact portions are provided in plurality at intervals in the circumferential direction of the support column,
The shoring is characterized in that a plurality of the lower contact portions are provided at intervals in the circumferential direction of the cylindrical member. In the shoring according to claim 1,
The upper contact portion extends in an arc shape along the outer peripheral surface of the support column,
The shoring structure is characterized in that the lower contact portion extends in an arc shape along the outer peripheral surface of the cylindrical member.

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