Bracket for support system of excavation

Abstract

The present invention relates to a support beam fixing device used in earth retaining temporary construction, and more specifically, to a support beam fixing device using a bracket and a fixing bolt in which a bolt hole provided on a horizontal plane is inclined in a clockwise or counter-clockwise direction, and to a support beam fixing device that improves the connection structure between a center pile (H-beam) and a support beam in earth retaining temporary construction. The present invention provides a bracket of a shape corresponding to the construction error of the center pile, thereby providing safety and convenience in the bolt connection between the bracket and the support beam.

Description

Technology Field

[0001] The present invention relates to a fixing device for a support beam used in temporary earth retaining structure construction, and more specifically, to a fixing device for a beam support using a fixing bolt and a bracket, and to a fixing device for a support beam that improves the combined construction of a center pile (H-beam), a strut, and a support beam in the construction of a temporary earth retaining structure. Background Technology

[0003] Generally, when excavating for civil engineering works or the installation of underground structures for medium and large-scale buildings, earth retaining wall construction is carried out to prevent soil leakage from underground walls, ground subsidence, or collapse.

[0004] In the aforementioned earth retaining wall construction, a barrier wall (earth retaining wall) is installed underground in advance before excavation begins. To prevent the collapse of the earth retaining wall, horizontal struts are installed to resist earth pressure. As the depth increases, the excavation and strut installation are repeated in stages.

[0005] In addition, in the case of a wide width, center piles are installed at regular intervals in a vertical direction to support the braces in order to prevent the braces from falling as shown in Fig. 1, and the braces are placed on a support beam in a direction perpendicular to the braces while being the same horizontal member, and a bracket for supporting the support beam is installed on the center piles.

[0006] However, the existing technology of Fig. 1 is constructed by interconnecting mutually orthogonal members with bolt connections, but a problem arises in that the position of the bolt holes cannot be specified due to construction errors.

[0007] Due to these problems, on-site workers use oxygen welding machines, which are high-risk equipment, to drill holes in support beams or bracket members and fasten bolts, resulting in very inefficient work performance, reduced work quality, and, in particular, a high vulnerability to safety accidents.

[0008] In addition, there is a problem in that damage occurs in brackets or center piles (H-beams) used for support beams that are repeatedly reused, and as the number of uses increases, the damaged area expands, ultimately leading to a significant deterioration in the quality of the member.

[0009] In addition, the patent document below is an example showing a construction method for temporary earth retaining structures in excavation work and a connection device for bracing beams.

[0010] First, registered patent No. 10-23531885, 'Short member fixing structure and earth retaining structure using the same,' shows a conventional earth retaining structure composed of vertical piles, supporting beams, and short members, and a short member fixing structure for fixing a short member to a supporting beam.

[0011] In addition, registered patent No. 10-1812451, 'Connecting device for tie beams and bracing beams for earth retaining walls,' shows a bracket form composed of a tie beam support body and a bracing beam support body, and shows a construction method of inserting a bracing beam into the bracket to connect them.

[0012] In addition, registered patent No. 10-2478561, 'connecting device for earth retaining tie beam and bracing beam with insertion groove formed,' shows a method of construction in which a bracing beam is inserted by forming a bracing beam insertion hole in a body used as a bracket. The problem to be solved

[0014] The purpose of the present invention is to provide construction efficiency and safety for known temporary earth retaining structures.

[0015] A specific objective of the present invention is to provide a bracket that enables easy and rapid bolt fastening regardless of construction errors of the center pile (H-beam).

[0016] In addition, the purpose of the invention is to provide convenience and safety in the construction of brackets and support beams.

[0017] In addition, the purpose is to ensure that damage to the members and deterioration of quality do not occur even with repeated use of the bracket and support members. means of solving the problem

[0019] The present invention provides an improved support beam fixing device that provides convenience and stability in the combination of a center pile (H-beam) and a strut as a means of solving the above problem.

[0020] The support beam fixing device according to the present invention is composed of a bracket and a fixing bolt, and is characterized in that the bolt hole on the horizontal surface of the bracket is configured in the form of an elongated slot and has a rotation angle in a clockwise or counter-clockwise direction.

[0021] The above fixing bolt is fastened with a washer and a nut.

[0022] In addition, the fixing bolt connecting the bracket and the support beam is characterized by being composed of a bracket-type fixing bolt having an L-shaped bolt head.

[0023] In addition, the above-mentioned bracket-type fixing bolt is characterized by having a corresponding part. Effects of the invention

[0025] The present invention has the following effects.

[0026] The present invention provides a bracket of a shape corresponding to the construction error of the center pile, thereby providing safety and convenience in the bolt fastening of the connection part of the support beam.

[0027] In addition, since the present invention uses standardized brackets, it eliminates the need to manufacture brackets for on-site custom work, thereby reducing the increase in costs associated with bracket production and eliminating the risk factors associated with manufacturing custom brackets on-site, thus providing a safe working environment.

[0028] In addition, the present invention allows connection and disassembly operations to be performed even when the fixing bolt is not completely separated from the bracket through the use of a fixing bolt having a bracket-shaped bolt head, thereby eliminating the inconvenience of losing the components constituting the fixing bolt. Brief explanation of the drawing

[0030] FIG. 1 is an example diagram illustrating the configuration of a conventional support beam fixing device. FIG. 2 is a configuration diagram of a support beam fixing device according to the present invention. FIG. 3 is an example of construction of a support beam fixing device according to the present invention. FIG. 4 is an example diagram of bracket operation in a support beam fixing device according to the present invention. FIG. 5 is an exemplary embodiment of a fixing bolt in a support beam fixing device according to the present invention. Fig. 6 is an example of the construction of Fig. 5. Fig. 7 is an example diagram of the bracket operation of Fig. 5. FIG. 8 is an example of another embodiment of the fixing bolt of FIG. 5. FIG. 9 is another example of a bracket in a support beam fixing device according to the present invention. FIG. 10 is an example of a vertical plane of a bracket in a support beam fixing device according to the present invention. Specific details for implementing the invention

[0031] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. For reference, the size, line thickness, etc., of the components illustrated in the drawings referenced for explaining the present invention may be depicted somewhat exaggerated for ease of understanding.

[0032] In addition, the terms used in the description of the present invention are defined considering their functions in the present invention, and may vary depending on the user's or operator's intent, convention, etc.

[0033] Therefore, the definition of this term should be based on the content throughout this specification.

[0035] The support beam fixing device (30) according to the present invention will be described in detail with reference to the attached drawing.

[0036] It can be seen from the attached FIG. 2 that the configuration of the present invention consists of a bracket (20) and a fixing bolt (10), and the attached FIG. 3 shows an example of use of FIG. 2 in a perspective view.

[0037] In addition, Fig. 4 shows an embodiment of Fig. 2, in which a slot-shaped bolt ball (23) changes the position of the support beam (300).

[0038] The present invention is described in more detail as follows.

[0039] The support beam fixing device (30) according to the present invention is characterized by being composed of a fixing bolt (10) and a bracket (20).

[0041] The above bracket (20) is composed of a horizontal surface (24), a vertical surface (22), and a reinforcing surface (25), and the bolt hole (23) of the horizontal surface (24) of the bracket (20) is configured in the form of an elongated slot and is characterized by having a rotation angle in a clockwise or counter-clockwise direction.

[0042] Generally, slotted bolts are primarily used to easily compensate for construction errors, but they have the disadvantage that the bolt may slip when force is applied along the length of the slot.

[0043] And in the case of a temporary earth retaining structure, if the bolt hole is provided in the form of an elongated slot perpendicular to the axis of the support beam, the bolt may be pushed in that direction by the force transmitted from the support beam, and the support beam may slide due to the force transmitted from the support beam.

[0044] However, as in the present invention, if the bolt hole (23) is provided in a shape inclined on a plane with a rotation angle, the inclined surface of the bolt hole (23) prevents the movement of the fixing bolt (10) by applying pressure, thereby restraining the support beam (300) from sliding in a direction perpendicular to the axis. This allows for the provision of a combined structure between the support beam (300) and the fixing device (100) that ensures stability while improving the constructability of the fixing bolt (10) by using the bolt hole (23) in the form of an elongated slot.

[0045] Meanwhile, the rotation angle of the bolt ball (23) is provided between 10° and 25°. In addition, the rotation direction of the bolt ball (23) can be either way, and it is not necessary for all four bolt balls (23) to be in the same direction. For example, as shown in FIG. 2, the bolt balls in the first and second rows may be in the same direction within the same column but in opposite directions in the rows, or as shown in FIG. 9 which will be described later, the columns and rows may be in opposite directions or the ratio of the number may be different.

[0046] In addition, the fixing bolt (10) in the present invention has a conventional fixing bolt configuration and is composed of a polygonal bolt head (11), a washer (13) and a nut (14) for preventing loosening.

[0048] The use of the present invention is explained.

[0049] The vertical surface (22) of the bracket (20) is fixed to the center pile (100) using a standard fixing bolt and a bolt hole (21).

[0050] After positioning the support beam (300) on the horizontal surface (24) of the fixed bracket (20) as described above, the support beam (300) is fixed to the bracket (200) using a fixing bolt (10).

[0051] In the above operation, the support beam (300) is equipped with a normal bolt hole.

[0053] In the present invention, the connection of the fixing bolt (10) is achieved by inserting the bolt head (11) of the fixing bolt (10) into the bolt hole formed in the support beam (300), passing through the bolt hole (23) of the bracket (20), and then sequentially assembling a washer (13) and a nut (14) to the threaded portion (12), thereby maintaining the binding force of the fixing bolt (10).

[0054] In this way, the vertical members, the center pile (100), the support (200), and the support beam (300), are fixed, and the earth retaining temporary structure is constructed.

[0056] The attached FIG. 5 shows another example of a fixing bolt (10) constituting the present invention. In addition, FIG. 6 is a perspective view of an embodiment of FIG. 5, and FIG. 7 shows a structure corresponding to construction errors.

[0057] As can be seen in FIG. 5, the fixing bolt (10) is a fixing bolt (10) having an L-shaped bracket head (11') and is fixed to the bracket (20) in a clamp-like form to hold the support beam (300).

[0058] As such, when using a bracket-type fixing bolt (10) having a bracket-type bolt head (11') in the shape of an 'ㄱ', the support beam (300) can be fixed to the bracket (20) without forming a separate bolt hole in the support beam (300), so it is easier to respond to construction errors than using a general bolt as the fixing bolt (10) as in the embodiment of FIG. 2, and the effort and cost of drilling a bolt hole in the support beam (300) can be reduced.

[0059] Meanwhile, in the embodiment of FIG. 5, since the structure is such that two L-shaped bracket bolt heads (11') are installed in close contact with both ends of the lower flange of the support beam (300), the inner spacing between the first row and the second row of bolt holes (23) must not be greater than the width of the support beam flange.

[0060] Figure 8 attached shows another example of a bracket-type fixing bolt (10) constituting the present invention.

[0061] In other examples, a corresponding part (15) is provided on the upper side of the screw part (12).

[0062] The above-mentioned corresponding portion (15) is inserted into the bolt hole (23) of the bracket (20). Since the straight portion of the bolt hole (23) and the corresponding portion (15) of the fixing bolt (10') have a straight portion parallel to each other, the fixing bolt (10) can be more effectively prevented from slipping, thereby stably maintaining the position of the fixing bolt (10) coupled to the bolt hole (23).

[0064] The attached FIG. 9 shows a different arrangement of bolt holes (23) on the upper plate of the bracket (20). The length of the bolt hole (23) slot is reduced, but the arrangement is increased from two rows to three rows. When using a standard fixing bolt (10) as in the embodiment of FIG. 2, one row and two rows of bolt holes (23) are used, and when using an L-shaped bracket fixing bolt (10) as in the embodiment of FIG. 5, one row and three rows of bolt holes (23) are used.

[0065] In this way, by increasing the arrangement of bolt balls (23), the length of the bolt ball (23) slot can be reduced compared to two rows of bolt balls (23), so that the length of the slot can be increased without increasing the thickness of the top plate, thereby mitigating the decrease in rigidity of the bracket (20) top plate.

[0067] The attached FIG. 10 is an example in which a horizontal elongated bolt hole (21') is provided on the vertical surface (22) of the bracket (20). Since no force is applied in the axial direction of the support beam (300), the horizontal elongated bolt hole (21') is advantageous in terms of constructability, and in the case of the embodiment of FIG. 2, it has the advantage of being able to accommodate horizontal errors of the center pile (100). In this case, it is preferable that the width of the bracket (20) be provided wider than the width of the center pile (100) in conjunction with the length of the horizontal bolt hole (23).

[0069] Although specific embodiments of the present invention have been described above, the present invention is not limited by the embodiments disclosed in this specification and the attached drawings, and can be modified in various ways by those skilled in the art within the scope of the technical spirit of the present invention. Explanation of the symbols

[0078] 10. Fixing bolt 11, 11'. Bolt head 12. Screw part 13. Washer 14. Nut 15. Response Department 20. Bracket 21, 21'. Bolt ball 22. Vertical plane 23. Bolt ball 24. Horizontal plane 25. Reinforcement surface 30. Support beam fixing device 100. Center pile (H-beam) 200. Strut 300. Support beam

Claims

Claim 1 A support beam fixing device used in earth retaining temporary construction, comprising a fixing bolt (10) and a bracket (20), wherein the bolt hole (23) of the elongated hole provided on the horizontal surface (24) of the bracket (20) is formed at an angle of 10 to 25° with respect to the direction perpendicular to the axis of the support beam (300), and the inclined surface of the inclined elongated hole is formed to restrain the movement of the fixing bolt (10) in the direction of earth pressure transmission through pressure action, and wherein the fixing bolt (10) uses an L-shaped bracket-type bolt head (11'). Claim 2 A support beam fixing device used in earth retaining temporary construction, characterized in that, in claim 1, the above fixing bolt (10) has a corresponding part (15) corresponding to the inclination of the bolt hole (23) of the elongated hole. Claim 3 A support beam fixing device used in earth retaining temporary construction, characterized in that, in claim 1, the bolt holes (23) of the above bracket (20) have a three-row arrangement structure. Claim 4 delete

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