Earth retaining beam receiving adjustable fitting

Abstract

To provide an earth retaining beam receiving universal metal fitting capable of obtaining large strength by a simple structure.SOLUTION: The earth retaining beam-receiving adjustable fitting includes a base 20 and a movable base 30, and an arc-shaped convex 22a formed on an end face of each of a plurality of fixed support plates 22 provided on the base 20 is brought into sliding contact with an arc-shaped concave 32a formed on an end face of a movable support plate 32 provided on the movable base 30. A base 20 is provided with a square base plate 21, a plurality of fixed support plates 22 erected on one side of the base plate 21 at intervals, load dispersion cylinders 23 horizontally provided between the central parts of adjacent fixed support plates 22, and a plurality of radial ribs 24 radially provided, and axial force of a shore strut is dispersed through the plurality of radial ribs 24 and the load dispersion cylinder 23 and transmitted from a movable base 30 to the base 20.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a swivel fitting used between a support material such as a wale and a beam material such as a strut, and in particular to a swivel fitting for earth retaining beams that allows the mounting angle of the beam material to be adjusted. [Background technology]

[0002] In retaining wall construction, when connecting a strut to a waling at a non-perpendicular angle, a beam support stand is attached to the waling side, and mortar is filled between the ends of the waling and the strut to secure them in place.

[0003] It is also known to connect the wale and the end of a beam such as a flint beam by interposing a beam support between them (Patent Document 1). This type of beam support device comprises a base mounted on the belly-raising side and a movable platform mounted on the end side of the beam material; the base and movable platform are constructed from multiple steel plates; one of the opposing support plates that make up the base and movable platform has an arc-shaped convex surface formed on it, and the other support plate has an arc-shaped concave surface formed on it; these convex and concave surfaces are brought into sliding contact with each other, allowing the movable platform to rotate relative to the base. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3178993 Summary of the Invention [Problem to be solved by the invention]

[0005] The conventional technique of connecting the wale and strut using beam supports involves the following problems. <1> The struts must be pressurized (extended) until the mortar hardens, which takes time to install. <2> Since the beam support frame is a temporary member, it must be removed after the struts are pressurized, and removing the beam support frame requires a lot of time and effort. <3> To prevent the struts from lifting up, the beam support frame and the struts are secured together with fastening hardware, but even attaching and detaching the fastening hardware requires a lot of time and effort.

[0006] The conventional technique of connecting the wale and the beam using beam supports involves the following problems. <1> The beam support is designed to be strong enough to accommodate a flint beam that does not have a very large axial force. Therefore, if the beam support is used to secure a strut, which is subject to a larger axial force than a beam, the load may be concentrated on one part of the beam support, causing deformation of the support plate. <2> If the thickness of the multiple support plates is increased in order to increase the strength of the beam support, the weight of the beam support will increase, making it difficult to handle on site and also increasing the cost of the beam support. <3> It is possible to manufacture beam supports by casting, but cast beam supports are heavier and harder to handle than those made from steel plate, and additional processing such as cutting and drilling is required after casting, making manufacturing time and costly.

[0007] The present invention has been made in consideration of the above points, and its object is to provide a flexible earth retaining beam support fitting that has a simple structure and can obtain a large bearing capacity. A further object of the present invention is to provide a flexible earth retaining beam support fitting suitable for struts that generate large axial forces. [Means for solving the problem]

[0008] The present invention is a flexible retaining beam support fitting which comprises a base provided on the wale side and a movable base provided on the strut side, and which is configured so that the arc-shaped convex surfaces formed on the end faces of multiple fixed support plates provided on the base slide against the arc-shaped concave surfaces formed on the end faces of the movable support plates provided on the movable base, and which is configured so that the joint angle of the movable base with respect to the base is adjustable.The base comprises a square base plate which can be attached to the wale via multiple bolts, multiple fixed support plates erected at intervals on one side of the base plate, a load distribution tube mounted horizontally between the centers of adjacent fixed support plates, and multiple radial ribs arranged radially outside the load distribution tube between the adjacent fixed support plates, and is configured so that the axial force of the strut acting on the sliding surfaces of the movable support plates of the movable base and the fixed support plates of the base is distributed through the multiple radial ribs and the load distribution tube and transmitted from the movable base to the base. In another embodiment of the present invention, arcuate convex surfaces may be formed on the outer peripheral end surfaces of the plurality of fixed support plates, and stopper surfaces may be formed at the ends of the convex surfaces so as to protrude outward from the convex surfaces. In another form of the present invention, the movable platform comprises a square connecting plate that can be attached to the end face of the strut via a plurality of bolts, a plurality of movable support plates erected at intervals on one side of the connecting plate, reinforcing ribs provided between adjacent movable support plates, and a positioning plate attached to the side of the outermost movable support plate. In another form of the present invention, the structure may comprise a base provided on the wale side, a movable table provided on the strut side, and one or more extension bases provided on the wale adjacent to the base, the extension base having an extension base plate that can be attached to the wale via a plurality of bolts, and by providing the extension base plate adjacent to the base, the overall length of the base plate of the base may be substantially extendable. In another embodiment of the present invention, a plurality of fixed support plates are provided at intervals to form a symmetrical base. [Effects of the Invention]

[0009] The present invention has at least one of the following advantages. <1> The present invention is configured to distribute axial force so that even if a huge axial force acts through the strut, an unbalanced load does not occur on the fixed support plate of the base. Therefore, without increasing the number of fixed support plates installed or increasing the thickness of all fixed support plates, it is possible to reinforce multiple fixed support plates through the load distribution tube and multiple radial ribs, while effectively distributing the axial force acting on some of the fixed support plates to multiple fixed support plates. Therefore, it is possible to suppress the manufacturing costs of the beam-supporting universal fitting while increasing the strength of the beam-supporting universal fitting, and also to improve the handling properties of the beam-supporting universal fitting by reducing its weight. <2> By forming a stopper surface on a part of the movable support plate of the base, the rotation of the movable base relative to the base can be restricted within a certain range. This prevents accidents in which a worker's hands, arms, etc. get caught between the base and the movable platform, increasing the safety of the earth retaining beam support bracket. <3> By combining an extension base, the fixing force of the beam support bracket can be adjusted as desired depending on the magnitude of the axial force acting on the strut. Therefore, there is no need to individually manufacture beam-supporting universal fittings whose base lengths vary depending on the magnitude of the axial force acting on the strut. [Brief explanation of the drawings]

[0010] [Figure 1] Exploded view of a flexible earth retaining beam support fitting according to Example 1 of the present invention [Figure 2] A perspective view of the joint where a brace for beam support is installed between the wale and the beam [Figure 3] Cross section of the joint between the wale and the beam [Figure 4] Cross-sectional view of IV-IV in Figure 3 [Figure 5] Plan view of earth retaining beam support bracket [Figure 6] A side view of a flexible earth retaining beam support fitting according to a second embodiment of the present invention. [Figure 7] Plan view of the earth retaining beam support flexible fitting according to Example 2 DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. [Example]

[0012] <1> Overall structure of beam support bracket An earth retaining beam support flexible metal fitting 10 (hereinafter referred to as "beam support flexible metal fitting 10") according to the present invention will be described with reference to Figs. The beam-supporting flexible fitting 10 according to the present invention is a fitting interposed between a wale A, which is an earth retaining support, and a strut B, which is a beam material. The beam-supporting universal fitting 10 comprises a base 20 and a movable base 30, and the base 20 and the movable base 30 are rotatable due to a non-support structure.

[0013] <2> Foundation The base 20 comprises a rectangular base plate 21, a plurality of fixed support plates 22 arranged parallel to each other at intervals on one side of the base plate 21, a load distribution tube 23 arranged horizontally between the centers of adjacent fixed support plates 22, and a plurality of radial ribs 24 arranged radially outside the load distribution tube 23 and between adjacent fixed support plates 22.

[0014] <2.1> Substrate The base plate 21 is a rectangular steel plate, and a plurality of bolt holes 21a corresponding to the bolt holes drilled in the wale A are provided on the surface of the plate. End plates 25 are erected at the ends of the substrate 21. In this example, a pair of end plates 25, 25 are erected facing each other at both ends of the substrate 21, but the end plate 25 may be provided at one end of the substrate 21.

[0015] <2.2>Fixed base plate At the center of the base plate 21, a plurality of fixed support plates 22 are arranged in parallel in the longitudinal direction of the base plate 21. The reason why multiple fixed support plates 22 are arranged in the central position of the base plate 21 is to form the base 20 symmetrically on both sides with the central axis of rotation of the base 20 and the movable base 30 sandwiched between them when the base 20 is laid flat.

[0016] Each fixed support plate 22 is a steel plate for rotatably supporting the movable base 30 , and transmits the axial force acting through the fixed support plate 22 to the base plate 21 . Each fixed support plate 22 has a mounting hole 22a at its center, through which a connecting bolt 40 is inserted to prevent the base 20 and the movable base 30 from separating.

[0017] <2.2.1> Arc-shaped convex surface and stopper The fixed support plate 22 is formed in a semicircular shape and has an arc-shaped convex surface 22b formed on the outer peripheral end surface of the upper half thereof. Since the arc-shaped convex surface 22b serves as a sliding contact surface against the movable base 30, the convex surface 22b is formed as an arc surface with a uniform diameter.

[0018] At the end of the convex surface 22b, a stopper surface 22c is formed that protrudes outward from the convex surface 22b. The side end surface of the movable support plate 32 constituting the movable base 30 abuts against the stopper surface 22c, so that the rotation of the movable base 30 relative to the base 20 can be restricted within a certain range. The stopper surface 22c is formed at a position that can prevent an accident in which the operator's hand, arm, etc. is caught between the base 20 and the movable table 30.

[0019] <2.2.2> Number of fixed support plates installed In this example, three fixed support plates 22 are arranged side by side at intervals on one side of the base plate 21, but the number of fixed support plates 22 to be arranged can be selected appropriately.

[0020] <2.2.3> Thickness of fixed support plate In this example, we will explain a form in which the thickness of the central fixed support plate 22 out of the three fixed support plates 22 is made thicker than the fixed support plates 22 on either side, but the thickness of all the fixed support plates 22 may also be made uniform.

[0021] By providing a difference in plate thickness for the fixed support plates 22 as in this example, the thicker central fixed support plate 22 can bear a large portion of the axial force through the strut B, and the thinner fixed support plates 22 on both sides can bear a reduced amount of axial force.

[0022] <2.3>Load distribution cylinder The load distribution tube 23 is a steel cylinder (e.g., a steel pipe) that has both the function of reinforcing the multiple fixed support plates 22 in cooperation with the radial ribs 24 and the function of evenly distributing the load (axial force) acting on the multiple fixed support plates 22 in cooperation with the radial ribs 24. Both ends of the load distribution tube 23 are fixed to the side surfaces of the adjacent fixed support plates 22 by welding.

[0023] In this example, we will explain a form in which a single load distribution tube 23 of the same diameter is placed on the same axis between adjacent fixed support plates 22, but there are also cases in which multiple load distribution tubes 23 of different diameters are placed on the same axis between adjacent fixed support plates 22.

[0024] <2.3.1> Relationship between the load distribution tube and the convex surface of the fixed support plate In order to allow the load distribution tube 23 to exhibit its load distribution function, the center of the load distribution tube 23 and the center of the convex surface 22b of the fixed support plate 22 are set to be substantially the same.

[0025] <2.3.2> Diameter difference between the convex surfaces of the load distribution tube and the fixed support plate In order to arrange the radial ribs 24 on the outside of the load distribution cylinder 23, the diameter of the load distribution cylinder 23 is set smaller than the diameter of the convex surface 22b of the fixed support plate 22. The diameter of the load distribution cylinder 23 can be selected as appropriate, but it is desirable that the difference in diameter from the convex surface 22b is small.

[0026] <2.4> Radial ribs The radial ribs 24 are steel plates that have the dual function of reinforcing the multiple fixed support plates 22 in cooperation with the load distribution tube 23, and also of evenly distributing the load (axial force) acting on the multiple fixed support plates 22 in cooperation with the load distribution tube 23. The plurality of radial ribs 24 are arranged radially between the opposing surfaces of the adjacent fixed support plates 22 and extend horizontally between the opposing surfaces of the adjacent fixed support plates 22 and between the outer peripheral surface of the load distribution cylinder 23 and the base plate 21 .

[0027] That is, both ends of each radial rib 24 are fixed to the opposing surfaces of the adjacent fixed support plates 22 by welding or the like, and the inner end faces of the radial ribs 24 are fixed to the outer peripheral surface of the load distribution cylinder 23 by welding or the like. Radial ribs 24 extending horizontally from the lower half of the fixed support plate 22 are fixed to the outer circumferential surface of the load distribution cylinder 23 and the base plate 21 by welding or the like.

[0028] In this example, five radial ribs 24 are provided between the opposing surfaces of adjacent fixed support plates 22, but the number of radial ribs 24 provided can be selected appropriately.

[0029] <3> Movable platform The movable base 30 comprises a rectangular joint plate 31, a plurality of movable support plates 32 spaced apart from one side of the joint plate 31, reinforcing ribs 33 provided between adjacent movable support plates 32, and a positioning plate 34 attached to the side of the outermost movable support plate 32.

[0030] <3.1> Joint plate The joining plate 31 is a rectangular steel plate for joining to the end of the strut B, and its plate surface has a plurality of bolt holes 31a corresponding to the bolt holes drilled in the strut B.

[0031] <3.2> Movable support plate The movable support plate 32 is a plate body for directly transmitting axial force to the fixed support plate 22 of the base 20 . The thickness of the movable support plate 32 is set to be equal to or greater than that of the fixed support plate 22 described above.

[0032] <3.2.1> Arc-shaped concave surface The end face of the movable support plate 32 is formed with an arc-shaped concave surface 32a. The arc-shaped concave surface 32 a is a curved surface that can come into sliding contact with the convex surface 22 b of the fixed support plate 22 .

[0033] <3.2.2> Curvature of arc-shaped convex and concave surfaces The radius of the concave surface 32a is the same as the semicircle of the convex surface 22b, and the curvatures of the convex surface 22b and the concave surface 32a are the same so that the convex surface 22b of the fixed support plate 22 and the concave surface 32a of the movable support plate 32 come into sliding contact with each other to allow rotation.

[0034] <3.3> Reinforcement rib The reinforcing rib 33 is a steel plate that exhibits a reinforcing function for the movable support plate 32, and is laid horizontally between the opposing surfaces of adjacent movable support plates 32. The reinforcing rib 33 is not essential and can be omitted.

[0035] <3.4> Positioning plate The positioning plate 34 is a positioning steel plate for attaching the movable base 30 to the base 20 so that it cannot be separated. The positioning plate 34 is fixed integrally to the outer surface of the outermost movable support plate 32 . The surface of the positioning plate 34 has mounting holes 34a, through which connecting bolts 40 are inserted to prevent the base 20 and the movable base 30 from separating. The connecting bolts 40 and nuts 41 for inseparably attaching the movable base 30 to the base 20 are not essential and may be omitted in some cases.

[0036] <4> The reason for combining the convex surface of the fixed bearing plate and the concave surface of the movable bearing plate The beam-supporting bracket 10 according to the present invention pivotally supports the base 20 and the movable base 30 rotatably by bringing the convex surface 22b of the fixed support plate 22 and the concave surface 32a of the movable support plate 32 into sliding contact. A typical pivot structure uses a support shaft, but if the support shaft structure commonly used in flexible beam support fittings for earth retaining walls is applied, a large diameter support shaft will be required, which will result in a large burden in terms of cost and weight. In the present invention, in order to solve this problem, a combination of the convex surface 22b of the fixed support plate 22 and the concave surface 32a of the movable support plate 32 is adopted.

[0037] <5> Manufacturing of beam support brackets The base 10 and the movable base 20 that make up the beam-supporting universal fitting 10 are made of steel plate and steel pipe, and the base 10 and the movable base 20 can be easily manufactured by, for example, cutting each plate into a predetermined shape from a single steel plate and then welding these steel plates and steel pipes together. Therefore, not only can the manufacturing costs of the base 10 and the movable base 20 be significantly reduced, but also, since large diameter support shafts are not used in the pivot structure, the weight can be significantly reduced compared to when large diameter support shafts are used.

[0038] <6> Assembling the beam support bracket As shown in Figure 1, the movable base 20 is placed over the side of the base 10 so that the convex surface 22b and concave surface 32a of the fixed support plate 22 and the movable support plate 32 abut against each other, and the beam-supporting bracket 10 can be assembled by the simple process of connecting the fixed support plate 22 of the base 20 and the positioning plate 34 of the movable base 30 with connecting bolts 40 and nuts 41. The pair of positioning plates 34 restrict the free lateral movement of the movable base 30 relative to the base 20, and the connecting bolts 40 and nuts 41 prevent the base 10 and the movable base 20 that constitute the beam-supporting universal fitting 10 from being separated.

[0039] [How to use the beam support bracket] A method of using the beam-supporting universal fitting 10 will be described with reference to FIGS.

[0040] <1> Assembly of beam support bracket The base plate 21 of the base 20 constituting the beam-supporting universal fitting 10 is pressed against the side surface of the wale A, and bolts 50 are inserted through the aligned bolt holes and fixed with nuts 51. The connecting plate 31 of the movable base 30 constituting the beam-supporting universal fitting 10 is pressed against the end face of the strut B, and a plurality of connecting bolts 52 are inserted into each aligned bolt hole and fixed with nuts 53 .

[0041] <2> Pivot mechanism for beam support bracket The beam-supporting bracket 10 of the present invention does not have a support shaft member as in the conventional case, but has a pivot structure in which the arc-shaped convex surface 22b and concave surface 32a formed on the end faces of the fixed support plate 22 and the movable support plate 32, respectively, are in sliding contact with each other. The movable base 30 can rotate relative to the base 20 around the contact surface between the arc-shaped convex surface 22b and the concave surface 32a, so it can accommodate even if the mounting angle of the strut B is slightly displaced.

[0042] When assembling the beam-supporting universal fitting 10, the joint angle between the base 20 and the movable base 30 may become maximum (for example, 30°). Even in such a case, the side end faces of the movable support plates 32 constituting the movable base 30 abut against the stopper faces 22c of the base 20, restricting the rotation of the movable base 30 relative to the base 20 within a certain range. Therefore, accidents such as the worker's hand or arm getting caught between the base 20 and the movable base 30 can be prevented.

[0043] <3> Strength of beam support brackets In the present invention, a combination of a load distribution tube 23 and multiple radial ribs 24 is adopted to reinforce the multiple fixed support plates 22 while evenly distributing the load (axial force) acting on the multiple fixed support plates 22.

[0044] If the only requirement is to reinforce the fixed support plate 22, this can be achieved by increasing the number of fixed support plates 22 installed or by increasing the thickness of the fixed support plate 22, without using the load distribution tube 23 and the multiple radial ribs 24. Increasing the number of fixed support plates 22 installed or increasing the thickness of all of the fixed support plates 22 not only increases costs but also increases the weight, making it difficult to handle.

[0045] A typical strut is a single H-shaped steel beam, but in sites where large bearing capacity is required, a large, high-strength strut made by joining two H-shaped steel beams (such as the "Hirose Twin Beam") is used. At such sites, demonstration experiments have confirmed that simply reinforcing the fixed support plates 22 will result in an unbalanced load acting on some of the fixed support plates 22 when a large axial force (an axial force more than twice that of a single H-shaped steel strut) is applied, causing the fixed support plates 22 on the base 20 side and the movable support plates 32 on the movable base 30 side to deform and break.

[0046] The present invention is configured to distribute the axial force through the large cross-section, high-strength struts B so that even if a huge axial force acts on the fixed support plate 22 of the base 20, an unbalanced load does not occur. That is, the axial force is distributed and transmitted evenly to all the fixed support plates 22. Therefore, in the present invention, it is possible to reinforce multiple fixed support plates 22 through the load distribution tube 23 and multiple radial ribs 24, while dispersing the axial force acting on some of the fixed support plates 22 through the load distribution tube 23 and multiple radial ribs 24, without increasing the number of fixed support plates 22 installed or increasing the thickness of all of the fixed support plates 22. Therefore, not only can the strength of the beam support universal fitting 10 be increased while suppressing the manufacturing costs of the beam support universal fitting 10, but the handling properties of the beam support universal fitting 10 can be improved due to the reduced weight of the beam support universal fitting 10.

[0047] <4> Axial force transmission After installation, an axial force (compression force) acts on the beam-supporting universal fitting 10 through the strut B. The axial force acting on the beam-supporting universal fitting 10 is distributed and supported by the fixed support plate 22 and the movable support plate 32 that face each other. The axial force acting on the beam-supporting universal fitting 10 is transmitted between the base 20 and the movable base 30 via the contact surfaces of the arc-shaped convex surface 22b and concave surface 32a, so no load is applied to the connecting bolt 40.

[0048] <5> Bending force In particular, even if the load in the direction of the strut B's own weight acts as a bending force, the multiple fixed support plates 22 are reinforced through the load distribution tube 23 and multiple radial ribs 24, so they can also resist the bending force in the direction of the strut B's own weight.

[0049] <6> About the lift load of struts Furthermore, the load distribution tube 23 and the plurality of radial ribs 24 reinforce the plurality of fixed support plates 22 against the uplift load of the strut B, so that the load can also be resisted against the uplift load of the strut B.

[0050] <7> Comparison with conventional mortar filling and joining methods Compared to the conventional mortar-filled jointing method in which mortar is filled and fixed at the joint between the wale and strut, the present invention does not use any mortar, so there is no generation of industrial waste mortar. Therefore, the work of pressurizing (extending) the struts B can be performed without being affected by the hardening of the mortar, and the work of installing the struts B can be shortened. Furthermore, since no beam support frame is used, the time and labor required for setting up and removing the beam support frame can be reduced, and workability can be significantly improved. [Example]

[0051] Another embodiment in which an extension base 60 is added to the beam-supporting universal fitting 10 will be described with reference to FIGS.

[0052] <1> extension base The extension base 60 is a reinforcing metal fitting that extends the base plate 21 of the base 20 that constitutes the beam-supporting universal fitting 10 and increases the fixing force of the beam-supporting universal fitting 10 to the wale A.

[0053] The extension base 60 of this example comprises at least a rectangular auxiliary base plate 61 and a pair of end plates 62 erected on both ends of the auxiliary base plate 61 so as to face each other.

[0054] The auxiliary base plate 61 has the same width as the base plate 21 of the base 20, and a plurality of bolt holes 62a corresponding to the bolt holes drilled in the wale A are provided on the plate surface. The end plate 62 has bolt holes 62 a formed therein, which correspond to the bolt holes 25 a of the end plate 25 erected on the base plate 21 of the base 20 .

[0055] In this example, a reinforcing rib 63 is integrally provided along the longitudinal direction of the auxiliary substrate 61 at the center of the auxiliary substrate 61, but the reinforcing rib 63 is not essential.

[0056] <2> How to use the extension base A method for adjusting the fixing force of the beam-supporting universal fitting 10 using the extension base 60 will be described with reference to FIGS. When the strut B is joined to the wale A at a non-perpendicular angle via the beam support universal fitting 10, it is conceivable that the fixing force of the beam support universal fitting 10 will be insufficient. In such a case, one or more extension bases 60 are installed on the obtuse angle side of the strut B on the wale A on which the beam support universal fitting 10 is installed.

[0057] To install the extension base 60 on the wale A, the auxiliary base plate 61 of the extension base 60 is pressed against the side of the wale A, and the bolts 50 are inserted into the aligned bolt holes and fixed with the nuts 51.

[0058] Furthermore, the end plate 62 of the extension base 60 is placed adjacent to the end plate 25 of the base 20 that constitutes the beam-supporting universal fitting 10, and the two end plates 25, 62 are fixed together with connecting bolts 52 and nuts 53. When a plurality of extension bases 60 are installed, the plurality of extension bases 60 are installed adjacent to each other. The fixing force of the beam-supporting universal fitting 10 is adjusted according to the number of extension bases 60 installed.

[0059] <3> Function of the extension base If the strut B is joined at a right angle to the wale A, the axial force of the strut B will not act obliquely on the beam-supporting universal fitting 10.

[0060] When the strut B is joined to the wale A at a non-perpendicular angle, the axial force of the strut B acts on the beam support bracket 10 as a biasing force (lateral sliding force) toward the obtuse angle side of the strut B. In this example, by providing an extension base 60 in advance on the obtuse angle side of the strut B, i.e., on the side where the biasing force acts on the beam-supporting swivel fitting 10, the beam-supporting swivel fitting 10 and the extension base 60 can work together to counter the biasing force. In other words, by providing the extension base 60 adjacent to the beam-supporting bracket 10, the overall length of the base plate 21 that constitutes the base 20 can be substantially extended, thereby increasing the number of bolts that are fixed to the rib A.

[0061] <4> Effects of this example Another possible method is to individually manufacture beam-supporting universal fittings 10 with bases 20 having different overall lengths depending on the magnitude of the axial force acting on the struts B. If the beam-supporting brackets 10 are manufactured individually, not only will manufacturing and transportation costs increase, but the weight of the base 20 will also increase as the overall length of the base 20 increases, making it difficult to handle, and the amount of carbon dioxide emissions from transportation will also increase.

[0062] In this example, by combining the smallest unit of beam-supporting swivel fitting 10 with the extension base 60, there is no need to individually manufacture beam-supporting swivel fittings 10 according to the magnitude of the axial force acting on the strut B, and the fixing force of the beam-supporting swivel fitting 10 can be adjusted as desired simply by selecting the number of extension bases 60 to be installed. Furthermore, in this example, not only the problems of cost and ease of handling mentioned above but also the problem of carbon dioxide emissions can be alleviated. [Explanation of symbols]

[0063] A. Belly rising B...Beam material 10. Beam support bracket 20. Base 21... Circuit board 22...Fixed base plate 22b...Convex surface 23...Load distribution tube 24 Radial rib 30...Movable platform 31...Joint plate 32...Movable base plate 32a...Concave 33 Reinforcement rib 34 Positioning plate 40 Connecting bolt 41 Nut 50 volts 51 Nut 52 Connecting bolt 53 Nut

Claims

1. A flexible retaining beam support bracket is provided with a base provided on the wale side and a movable base provided on the strut side, and the arc-shaped convex surfaces formed on the end faces of multiple fixed support plates provided on the base are in sliding contact with the arc-shaped concave surfaces formed on the end faces of the movable support plates provided on the movable base, and the joint angle of the movable base with respect to the base is adjustable. The base includes a rectangular base plate that can be attached to the wale via a plurality of bolts, and a plurality of fixed support plates that are erected at intervals on one side of the base plate. A load distribution tube is provided horizontally between the centers of the adjacent fixed support plates; A plurality of radial ribs are provided radially outside the load distribution tube and between adjacent fixed support plates, The axial force of the strut acting on the sliding contact surface between the movable support plate of the movable table and the fixed support plate of the base is dispersed through the plurality of radial ribs and the load dispersion tube and transmitted from the movable table to the base. Flexible beam support bracket for retaining walls.

2. 2. A flexible retaining beam support fitting as described in claim 1, characterized in that an arc-shaped convex surface is formed on the outer peripheral end surfaces of the plurality of fixed support plates, and a stopper surface is formed at the end of the convex surface protruding outward from the convex surface.

3. The flexible earth retaining beam support fitting according to claim 1, characterized in that the movable base comprises a square connecting plate that can be attached to the end face of the strut via a plurality of bolts, a plurality of movable support plates erected at intervals on one side of the connecting plate, reinforcing ribs provided between adjacent movable support plates, and a positioning plate attached to the side of the outermost movable support plate.

4. A flexible retaining beam support fitting as described in claim 1, characterized in that it comprises a base provided on the wale side, a movable base provided on the strut side, and one or more extension bases provided on the wale adjacent to the base, the extension base having an extension base plate that can be attached to the wale via a plurality of bolts, and by providing the extension base adjacent to the base, the total length of the base plate of the base can be substantially extended.

5. 2. The earth retaining beam support bracket according to claim 1, wherein a plurality of fixed support plates are erected at intervals in the central position of the base plate to form a base symmetrical on both sides.

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