Method for inserting h-steel requiring joint

Abstract

To provide a method for inserting H-steel requiring a joint which is composed of a plate-like transmission plate and a plate-like connection plate.SOLUTION: A method for inserting H-steel inserts H-steel requiring a joint into the ground. The joint is composed of a plate-like transmission plate 42 and a plate-like connection plate 43, the transmission plate is disposed at a position along each web 41b of the H-steels joined to each other by the joint, a side part 42a of the transmission plate is welded to the inside part of a flange, the connection plate is disposed at a position along the transmission plate, and the H-steels joined to each other by the joint are inserted into a drilled hole formed by a predetermined drilling machine, by using H-steel 41 formed by joining the connection plate, the transmission plate and the web by a bolt 44.SELECTED DRAWING: Figure 8-A

Description

[Technical Field]

[0001] The present invention relates to a method for inserting H-beams requiring joints. [Background technology]

[0002] Conventionally, when constructing a retaining wall such as a soil cement wall or a pile-and-sheet pile wall, H-beams 3 are inserted into the ground as stress materials, as shown in Figure 3. In this case, however, depending on various conditions such as the excavation depth, the size of the site, and the vehicles that can be transported to the site, it is necessary to join multiple H-beams 3 with joints 8. As shown in FIG. 4, the joining by the joint 8 is specifically a bolted joint 2 using a bolt 1 and a splice plate 7, and the bolted joint 2 is joined to the flange 3a and web 3b of the H-beam steel 3, respectively.

[0003] On the other hand, when inserting the H-beam 3 into the hole 4 underground, the insertion position is controlled using a guide ruler 5, such as a steel plate or H-beam installed on the ground surface, as a guide. However, because the shank 1a of the bolt 1 and the nut 6 protrude outside the flange 3a, the H-beam 3 must be inserted at a distance L from the ruler 5 equal to the protruding dimension (see Figure 4).

[0004] Furthermore, when inserting H-beams that require conventional joints into the ground, as shown in Figure 5-B, splices (joints) 24 are provided on the flange 22 and web 23, respectively, and H-beams 21 are used that are bolted together with bolts 25 and nuts.

[0005] An example of a conventional bolt connection for H-shaped steel beams is shown in FIG. 5 of Japanese Patent Laid-Open Publication No. 2013-144876 (see Patent Document 1). [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2013-144876 A (see FIG. 5) Summary of the Invention [Problem to be solved by the invention]

[0007] When inserting a conventional H-beam 3 into the ground, as described above, the shank 1a of the bolt 1, the nut 6, etc. protrude outside the flange 3a, so the H-beam 3 must be inserted at a distance L from the ruler material 5 by the amount of this protrusion (see Figure 4). In other words, the H-beam 3 cannot be inserted in a state where it is aligned with the ruler material 5. As a result, the distance from the ruler material 5 to the flange 3a must be measured while inserting it, which poses the problem that it is complicated and difficult to accurately manage the insertion position of the H-beam 3. Furthermore, since the H-beam 3 cannot be inserted in a state aligned with the ruler member 5, there is no means to restrain the insertion position when the inserted H-beam 3 begins to shift. In other words, since the ruler member 5 cannot prevent the insertion position from shifting, careful construction is required, which poses the problem of making the work difficult.

[0008] In addition, when inserting H-beams that require conventional joints into the ground, as shown in Figure 6-B, bolts 25 protrude outside the flange 22, and the peripheral surface 28 of the drilled hole is formed outside this protruding bolt 25, resulting in the drilled hole diameter being made larger by the amount of the protruding bolt 25. Therefore, if the drilled hole diameter becomes larger, there is a problem in that the amount of soil removed during drilling increases, and the amount of cement milk injected also increases. Furthermore, because bolts 25 protrude outside flange 22, there is a problem that, as shown in Fig. 7-B, during excavation work, bucket 26 may come into contact with bolts 25. Note that reference numeral 27 in Fig. 7-B denotes the underground.

[0009] Therefore, in the conventional method of inserting H-beams, there are two issues that must be resolved: when inserting the H-beam 3 into the ground, it must be inserted in a state aligned with the ruler material 5, making it easy to manage the insertion position; and when the H-beam 3 begins to shift, the ruler material 5 must be able to restrain the insertion position and prevent the shift.

[0010] In addition, when inserting H-beams that require joints as in the conventional example into the ground, there are issues that must be resolved: making the drilling diameter as small as possible to reduce the amount of soil removed during drilling, thereby reducing the amount of cement milk injected, and avoiding the bucket 26 coming into contact with the bolt 25 during excavation work. [Means for solving the problem]

[0011] The gist of the present invention, which solves the problems of the above-mentioned conventional examples, is a method for inserting H-shaped steel beams that require joints into the ground, wherein the joints consist of a plate-shaped transmission plate and a plate-shaped connecting plate, the transmission plates are arranged in positions along the webs of each of the H-shaped steel beams that are to be joined by the joints, the sides of the transmission plates are welded to the inner parts of the flanges, the connecting plates are arranged in positions along the transmission plates, and the H-shaped steel beams in which the connecting plates, transmission plates, and webs are joined with bolts are used, and the H-shaped steel beams joined with the joints are inserted into holes formed by a specified drilling machine.

[0012] The gist of the present invention, which aims to solve the problems of the above-mentioned conventional examples, is a method for inserting H-beams requiring joints into the ground, wherein the joints consist of a plate-shaped transmission plate and a plate-shaped connecting plate, and the connecting plates are arranged in positions near the flanges along the webs of each of the H-beams to be joined by the joints, and the transmission plates are arranged in positions along the connecting plates, and the sides of the transmission plates are welded to the inside of the flanges, and an H-beam in which the transmission plate, the connecting plate, and the web are joined with bolts is used, and the H-beam joined with the joints is inserted into a hole formed by a specified drilling machine.

[0013] The gist of the present invention, which solves the problems of the above-mentioned conventional examples, is a method for inserting H-shaped steel beams requiring a joint into the ground, wherein the joint comprises a connecting protruding plate protruding from the end of one of the H-shaped steel beams to be joined, and a transmission clamping plate which is attached to the end of the other H-shaped steel beam and clamps the connecting protruding plate, the connecting protruding plate is welded along the web and has its side welded to the inside of a flange, the transmission clamping plate comprises an inner plate and an outer plate which is attached at a predetermined distance from the inner plate, the inner plate is welded along the web and has its side welded to the inside of the flange, and the outer plate has its side welded to the inside of the flange, and the H-shaped steel beam formed by joining the transmission clamping plate which clamps the connecting protruding plate to the web with bolts is inserted into a hole formed by a predetermined drilling machine. [Effects of the Invention]

[0014] According to the method for inserting H-shaped steel beams using a joint of the present invention, a transmission plate is arranged in a position along the web of each of the H-shaped steel beams to be joined by the joint, the side of the transmission plate is welded to the inner part of the flange, a connecting plate is arranged in a position along the transmission plate, and an H-shaped steel beam is used in which the connecting plate, transmission plate, and web are joined with bolts, so that the bolts do not protrude from the outer side of the flange. As a result, the diameter of the drilled hole for inserting the H-beam can be made smaller than in conventional cases, which reduces the amount of soil removed during drilling and the amount of cement milk injected. Similarly, since the bolts do not protrude from the outer side of the flange, the bucket does not come into contact with the bolts during excavation work, making it possible to carry out work safely. Furthermore, since there are no protrusions such as bolts on the flange, it is easy to insert the H-beam and ensure vertical accuracy. In addition, the transmission plate and flange are welded together to transmit force between them, which provides various excellent effects, such as a joint strength that is comparable to that of the conventional H-beam joint structure (see Figure 5-B).

[0015] According to the method for inserting H-beams using joints of the present invention, connecting plates are arranged near the flanges at positions along the webs of each of the H-beams to be joined by the joint, transmission plates are arranged along the connecting plates, and the sides of the transmission plates are welded to the inner sides of the flanges, and H-beams are used in which the transmission plates, connecting plates, and webs are joined with bolts, so that the bolts do not protrude from the outer side of the flange. As a result, the diameter of the drilled hole for inserting the H-beam can be made smaller than in conventional cases, which reduces the amount of soil removed during drilling and the amount of cement milk injected. Similarly, since the bolts do not protrude from the outer side of the flange, the bucket does not come into contact with the bolts during excavation work, making it possible to carry out work safely. Furthermore, since there are no protrusions such as bolts on the flange, it is easy to insert the H-beam and ensure vertical accuracy. In addition, the transmission plate and flange are welded together to transmit force between them, which provides various excellent effects, such as a joint strength that is comparable to that of the conventional H-beam joint structure (see Figure 5-B).

[0016] According to the method for inserting H-beams using a joint of the present invention, the joint consists of a connecting protruding plate that is provided in a protruding state at the end of one of the H-beams to be joined, and a transmission clamping plate that is provided at the end of the other H-beam and clamps the connecting protruding plate, the connecting protruding plate is welded along the web and has its side welded to the inside part of the flange, the transmission clamping plate consists of an inner plate and an outer plate that is provided at a predetermined distance from the inner plate, the inner plate is welded along the web and has its side welded to the inside part of the flange, and the outer plate has its side welded to the inside part of the flange, and because an H-beam is used in which the transmission clamping plate that clamps the connecting protruding plate and the web are joined with bolts, no bolts protrude from the outside of the flange. As a result, the diameter of the drilled hole for inserting the H-beam can be made smaller than in conventional cases, which reduces the amount of soil removed during drilling and the amount of cement milk injected. Similarly, since the bolts do not protrude from the outer side of the flange, the bucket does not come into contact with the bolts during excavation work, making it possible to carry out work safely. Furthermore, since there are no protrusions such as bolts on the flange, it is easy to insert the H-beam and ensure vertical accuracy. Furthermore, the connecting protruding plate, inner plate, and outer plate are welded at their sides to the inner part of the flange, allowing for mutual force transmission, which provides various excellent effects, such as a joint strength that is comparable to that of the conventional H-beam joint structure (see Figure 5-B). [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a plan view showing an H-beam and a ruler member according to a first embodiment of the first invention of the present invention. FIG. [Figure 2] FIG. 10 is a plan view showing an H-beam and a ruler member according to a second embodiment of the first invention pertaining to the present invention. [Figure 3] FIG. 10 is a cross-sectional view illustrating a state in which a conventional H-shaped steel beam is inserted into the ground. [Figure 4] FIG. 10 is a plan view showing an H-beam and a ruler member according to a conventional example. [Figure 5-A] FIG. 10 is a perspective view of an H-beam steel member requiring a joint according to a second aspect of the present invention. [Figure 5-B] FIG. 1 is a perspective view of an H-shaped steel beam requiring a joint according to a conventional example. [Figure 6-A] FIG. 10 is a plan view showing the relationship between the H-shaped steel beam requiring the joint of the second invention and the diameter of the drilled hole. [Figure 6-B] FIG. 10 is a plan view showing the relationship between the H-shaped steel beam requiring a joint according to a conventional example and the diameter of the drilled hole. [Figure 7-A] FIG. 10 is a front view showing an H-shaped steel beam and a bucket that require a joint according to a second aspect of the present invention. [Figure 7-B] FIG. 10 is a front view showing an H-shaped steel beam and a bucket that require a joint according to a conventional example. [Figure 8-A] FIG. 10 is a plan view showing an H-shaped steel beam requiring a joint according to the third invention of the present invention. [Figure 8-B]FIG. 10 is a front view showing an H-shaped steel beam requiring a joint according to the third invention of the present invention. [Figure 9-A] FIG. 10 is a plan view showing an H-shaped steel beam requiring a joint according to a fourth aspect of the present invention. [Figure 9-B] FIG. 10 is a front view showing an H-shaped steel beam requiring a joint according to a fourth aspect of the present invention. [Figure 10] FIG. 10 is a perspective view showing an H-shaped steel beam requiring a joint according to a fifth aspect of the present invention. [Figure 11] FIG. 10 is a perspective view showing an H-shaped steel beam requiring a joint according to a fifth aspect of the present invention. [Figure 12] FIG. 10 is a perspective view showing an H-shaped steel beam requiring a joint according to a fifth aspect of the present invention. [Figure 13] FIG. 10 is a side view showing an H-beam steel requiring a joint according to the fifth invention of the present invention. [Figure 14] FIG. 14 is a view taken along the arrow A in FIG. [Figure 15] FIG. 14 is a view taken along the arrow B in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0018] Next, embodiments of the present invention will be described with reference to the drawings. As shown in Figure 1, the first invention of the present invention relates to a method for inserting H-shaped earth retaining steel bars into the ground when constructing an earth retaining wall. 1, reference numeral 11 denotes an H-beam, reference numeral 12 denotes a joint, reference numeral 13 denotes a drilled hole, and reference numeral 14 denotes a guide ruler material to be installed on the ground surface of the hole 13. Specifically, the ruler material 14 is a steel plate, an H-beam, or the like. [Example]

[0019] First, an H-beam 11 used in a method for inserting an H-beam for earth retaining according to a first embodiment of the first invention will be described. As shown in Figure 1, the H-beam 11 is constructed by arranging plate-shaped joints 12 at positions along the webs 11b of the H-beams 11 to be joined by the joints, welding both ends 12a of the joints 12 to the inner parts of the flanges 11a, and joining the joints 12 and the webs 11b with bolts 15. In FIG. 1, reference numeral 15a denotes the shaft portion of the bolt 15, and reference numeral 16 denotes a nut screwed onto the shaft portion 15a. As shown in FIG. 1, the joints 12 are disposed on both side surfaces of the web 11b, and bolts 15 are inserted through the joints 12 on both sides and screwed into place.

[0020] Then, as shown in FIG. 1, the H-beam 11 is inserted into a hole 13 in the ground with the outer portion of the flange 11a of the H-beam 11 aligned with a guide ruler 14 installed on the ground surface.

[0021] Since the H-beam 11 has both ends 12a of the joint 12 welded to the inside of the flange 11a, the shaft 15a of the bolt 15 and the nut 16 do not protrude from the outside of the flange 11a as in the conventional example. Therefore, the H-beam 11 can be inserted into the ground with the outer portion of the flange 11a of the H-beam 11 aligned with the guide ruler 14. In other words, since it is not necessary to measure the distance from the ruler 14 to the flange 11b while inserting it, as in the conventional example, it is easy to accurately manage the insertion position of the H-beam 11. [Example]

[0022] Next, a ruler member 14 used in a method for inserting an H-shaped recessed steel bar according to a second embodiment of the first invention will be described. 2, a recessed groove 18 is formed at the end of the ruler material 14, the recessed groove 18 having a shape that conforms to the flange 11a of the H-shaped steel 11. Then, with the outer portion of the flange 11a aligned with the recessed groove 18, the H-shaped steel 11 is inserted into the ground. In this way, by inserting the H-beam 11 into the ground with the outer portion of the flange 11a aligned with the groove portion 18, when the H-beam 11 begins to shift, the groove portion 18 can restrain the insertion position and prevent the shift.

[0023] Furthermore, as shown in Figure 2, it is even better to install the ruler material 14 on each of the flanges 11a of the H-beam 11 to be inserted into the ground, and insert the H-beam 11 into the ground with the outer portions of both flanges 11a aligned with the respective groove portions 18. In this case, when the H-beam 11 begins to shift, the recessed grooves 18 restrain the insertion position from both sides of the flange 11a, thereby further preventing the shift.

[0024] The method of inserting the H-beam retaining steel configured as described above involves arranging plate-shaped joints 12 at positions along the webs 11b of the H-beams 11 to be joined by the joint, welding both ends 12a of the joints 12 to the inside of the flanges 11a, and using H-beams 11 in which the joints 12 and the webs 11b are joined with bolts 15, so that the shanks 15a and nuts 16 of the bolts 15 do not protrude from the outside of the flanges 11a. Therefore, the H-beam 11 can be inserted into the ground with the outer portion of the flange 11a of the H-beam 11 aligned with the guide ruler material 14, which not only simplifies the construction and management during insertion, but also improves the installation accuracy of the H-beam 11. While the installation accuracy of permanent piles is usually 1 / 100 or less, the installation accuracy of H-beam earth retaining structures is 1 / 100 to 1 / 150 or less for temporary structures and 1 / 150 to 1 / 200 for permanent use, meaning that stricter accuracy is required than for permanent piles.

[0025] Next, a second aspect of the present invention will be described. The second aspect of the present invention relates to a method for inserting H-shaped steel beams, which require joints, into the ground, as shown in Fig. 5-A. In FIG. 5-A, reference numeral 31 denotes an H-beam, reference numeral 32 denotes a joint, and reference numeral 33 denotes a bolt.

[0026] First, an H-beam 31 used in the method for inserting an H-beam having a joint according to the second invention into the ground will be described. As shown in Figures 5-A and 6-A, the H-beam 31 is constructed by arranging plate-shaped joints 32 at positions along the webs 31b of the H-beams 31 to be joined by the joints 32, welding both ends 32a of the joints 32 to the inner parts of the flanges 31a, and joining the joints 32 and the webs 31b with bolts 33. As shown in FIG. 6A, the joints 32 are disposed on both side surfaces of the web 31b, and bolts 33 are inserted through the joints 32 on both sides and screwed into place.

[0027] Then, the H-beam 31 is inserted vertically into a bore hole 34 formed by a predetermined boring machine (not shown) such as an auger, using a predetermined driving machine or the like (not shown).

[0028] The method for inserting H-beams requiring joints according to the second invention configured as described above into the ground involves arranging plate-shaped joints 32 in positions along the webs 31b of the H-beams 31 to be joined by joints 32, welding the joints 32 to the inside of the flanges 31a, and using H-beams in which the joints 32 are joined to the webs 31b with bolts 33, so that the bolts do not protrude from the outside of the flanges 31a (see Figure 6-A). As a result, the diameter of the drilled hole for inserting the H-beam 31 can be made smaller than in the conventional example, which reduces the amount of soil removed during drilling and the amount of cement milk injected. Similarly, since the bolts 33 do not protrude from the outer side of the flange 31a, the bucket 35 does not come into contact with the bolts 33 during excavation work, as shown in Fig. 7-A, and work can be carried out safely. Note that the reference numeral 36 in Fig. 7-A denotes the underground. Furthermore, since there are no protrusions such as bolts 33 on the flange 31a, the H-beam 31 can be easily inserted, and vertical accuracy can be easily ensured.

[0029] Next, a third aspect of the present invention will be described. The third aspect of the present invention relates to a method for inserting H-beam steel pieces requiring joints into the ground, as shown in Figures 8-A and 8-B. In Figures 8-A and 8-B, symbol 41 indicates an H-beam, symbol 42 indicates a long plate-shaped transmission plate, symbol 43 indicates a long plate-shaped connecting plate, and symbol 44 indicates a bolt, and the joint is composed of the transmission plate 42 and the connecting plate 43.

[0030] First, an H-beam 41 used in the method for inserting an H-beam having a joint according to the third invention into the ground will be described. 8-A and 8-B, the H-beam 41 has a configuration in which a transmission plate 42 is disposed in a position along each web 41b of the H-beams 41 to be joined by a joint, a side portion 42a of the transmission plate 42 is welded to the inside portion of the flange 41a, a connecting plate 43 is disposed in a position along the transmission plate 42, and the connecting plate 43, transmission plate 42, and web 41b are joined with bolts 44. Reference numeral 45 in the figures indicates a welded portion. As shown in FIG. 8A, the joints made up of the transmission plate 42 and the connecting plate 43 are disposed on both side surfaces of the web 41b, and bolts 44 are inserted through the joints on both sides and screwed into place.

[0031] Then, the H-beam 41 is inserted vertically into a hole formed by a predetermined drilling machine (not shown) such as an auger, using a predetermined driving machine or the like (not shown).

[0032] The method for inserting H-beams requiring joints according to the third invention, configured as described above, into the ground involves arranging transmission plates 42 in positions along the webs 41b of the H-beams 41 to be joined by the joints, welding the side portions 42a of the transmission plates 42 to the inside portions of the flanges 41a, arranging connecting plates 43 in positions along the transmission plates 42, and using H-beams 41 in which the connecting plates 43, transmission plates 42, and webs 41b are joined with bolts 44, so that the bolts do not protrude outside the flanges 41a. As a result, the diameter of the drilled hole for inserting the H-beam 41 can be made smaller than in conventional cases, which reduces the amount of soil removed during drilling and the amount of cement milk injected. Similarly, since the bolts do not protrude from the outer side of the flange 41a, the bucket does not come into contact with the bolts during excavation work, making it possible to carry out work safely. Furthermore, since the flange 41a has no protrusions such as bolts, the H-beam can be easily inserted, and vertical accuracy can be easily ensured. Furthermore, the transmission plate 42 and the flange 41a are welded together to transmit force between them, so the joining strength is comparable to that of the conventional H-beam joining structure (see FIG. 5-B).

[0033] Next, a fourth aspect of the present invention will be described. The fourth aspect of the present invention relates to a method for inserting H-beam steel pieces requiring joints into the ground, as shown in Figures 9-A and 9-B. In Figures 9-A and 9-B, symbol 51 indicates an H-beam, symbol 52 indicates a long plate-shaped transmission plate, symbol 53 indicates a long plate-shaped connecting plate, and symbol 54 indicates a bolt, and the joint is composed of the transmission plate 52 and the connecting plate 53.

[0034] First, an H-beam 51 used in the method for inserting an H-beam having a joint according to the fourth invention into the ground will be described. 9-A and 9-B, the H-beam 51 has a structure in which a connecting plate 53 is disposed in the vicinity of the flange 51a along the web 51b of each of the H-beams 51 to be joined by the joint, a transmission plate 52 is disposed along the connecting plate 53, and a side portion 52a of the transmission plate 52 is welded to the inside portion of the flange 51a, and the transmission plate 52, connecting plate 53, and web 51b are joined with bolts 54. Reference numeral 55 in the figures indicates a welded portion. As shown in FIG. 9A, the joints made up of the transmission plate 52 and the connection plate 53 are disposed on both side surfaces of the web 51b, and bolts 54 are inserted through the joints on both sides and screwed into place.

[0035] Then, the H-beam 51 is inserted vertically into a hole formed by a predetermined drilling machine (not shown) such as an auger using a predetermined driving machine or the like (not shown).

[0036] The method for inserting H-beams requiring joints according to the fourth invention, configured as described above, into the ground involves arranging connecting plates 53 near flanges 51a along webs 51b of the H-beams 51 to be joined by the joints, arranging transmission plates 52 along the connecting plates 53, and welding the side portions 52a of the transmission plates 52 to the inside portions of the flanges 51a, and using H-beams 51 in which the transmission plates 52, connecting plates 53, and webs 51b are joined with bolts 54, so that the bolts do not protrude outside the flanges 51a. As a result, the diameter of the drilled hole for inserting the H-beam 51 can be made smaller than in the conventional method, which reduces the amount of soil removed during drilling and the amount of cement milk injected. Similarly, since the bolts do not protrude from the outer side of the flange 51a, the bucket does not come into contact with the bolts during excavation work, making it possible to carry out work safely. Furthermore, since the flange 51a has no protrusions such as bolts, the H-beam can be easily inserted, and vertical accuracy can be easily ensured. Furthermore, the transmission plate 52 and the flange 51a are welded together to transmit force between them, so the joining strength is comparable to that of the conventional H-beam joining structure (see FIG. 5-B).

[0037] Next, a fifth aspect of the present invention will be described. The fifth aspect of the present invention relates to a method for inserting H-shaped steel beams requiring joints into the ground, as shown in Figs. 10 to 15. In Figures 10 to 15, reference numeral 61 denotes an H-beam, reference numeral 62 denotes a long plate-shaped connecting protruding plate, reference numeral 63 denotes a transmission clamping plate that clamps the connecting protruding plate, reference numeral 64 denotes a bolt, and reference numeral 65 denotes a nut. The transmission clamping plate 63 is made up of an inner plate 63a and an outer plate 63b provided at a position spaced a predetermined distance from the inner plate 63a. The joint is composed of a connecting protruding plate 62 that is protruding from the end of one of the H-beams 61 (61x) to be joined, and a transmission clamping plate 63 that is provided at the end of the other H-beam 61y and clamps the connecting protruding plate 62.

[0038] First, an H-beam 61 used in the method for inserting an H-beam having a joint according to the fifth invention into the ground will be described. One of the H-beams 61x has a connecting protruding plate 62 welded along a web 61b, and a side portion 62a thereof welded to the inner portion of the flange 61a (see FIG. 14). The other H-beam 61y has the inner plate 63a of the transmission clamping plate 63 welded along the web 61b, its side portion 63c welded to the inner portion of the flange 61a, and the side portion 63d of the outer plate 63b welded to the inner portion of the flange 61a (see Figure 15). A transmission clamping plate 63, which clamps the tip of the connecting protruding plate 62, and the web 61b are joined together with bolts 64 (see FIGS. 12 and 13). In addition, a joint consisting of a connecting protruding plate 62 provided at the end of one H-beam 61x and a transmission clamping plate 63 provided at the end of the other H-beam 61y is arranged on both side surfaces via a web 61b, as shown in Figures 14 and 15, and a bolt 64 is inserted through the joints on both sides and screwed in (see Figure 15).

[0039] The method of inserting an H-beam requiring the joint of the fifth invention configured as described above into the ground comprises a joint consisting of a connecting protruding plate 62 and a transmission clamping plate 63, the connecting protruding plate 62 being provided in a protruding state at the end of one H-beam 61x, and the transmission clamping plate 63 being provided at the end of the other H-beam 61y, and an H-beam 61 is used in which the transmission clamping plate 63, which clamps the connecting protruding plate 62, is joined to the web 61b with a bolt 64, so that the bolt 64 does not protrude from the outer part of the flange 61a. As a result, the diameter of the drilled hole for inserting the H-beam 61 can be made smaller than in the conventional example, which reduces the amount of soil removed during drilling and also reduces the amount of cement milk injected. Similarly, since the bolts do not protrude from the outer side of the flange 61a, the bucket does not come into contact with the bolts during excavation work, making it possible to carry out work safely. Furthermore, since the flange 61a has no protrusions such as bolts, the H-beam can be easily inserted, and vertical accuracy can be easily ensured. Furthermore, the connecting protruding plate 62, the inner plate 63a, and the outer plate 63b have their sides 62a, 63c, and 63d welded to the inner part of the flange 61a, respectively, so that force can be transmitted between them. This provides a joint strength that is comparable to that of the conventional H-beam joint structure (see Figure 5-B). [Explanation of symbols]

[0040] 1 volt 1a Shaft 2. Bolted joints 3H steel 3a flange 3b Web 4 Hole 5 Ruler material 6 nuts 7 Plate 8. Joints 11 H steel 11a flange 11b Web 12 Joints 12a end 13 Drilled hole 14 Guide ruler 15 volts 15a Shaft 16 Nut 18 Groove 21 H steel 22 flange 23 Web 24 Splice (joint) 25 volts 26 Bucket 27 underground 28 Peripheral surface 31 H steel 31a flange 31b Web 32 Joints 32a end 33 volts 34 Drilling 35 Bucket 36 underground 41 H steel 41a flange 41b Web 42 Transmission plate 42a Side 43 Connecting plate 44 volts 45 Welded section 51 H steel 51a flange 51b Web 52 Transmission plate 52a Side 53 Connecting plate 54 volts 55 Welded section 61 H steel 61a flange 61b Web 61x One H-beam 61y The other H-beam 62 Connecting protruding plate 62a Side 63 Transmission clamping plate 63a Inner plate 63b Outer plate 63c Side 63d Side 64 volts 65 Nut 66 bolt holes

Claims

1. A method for inserting an H-beam requiring a joint into the ground, comprising: the joint includes a plate-shaped transmission plate and a plate-shaped connecting plate, The transmission plate is disposed at a position along each web of the H-shaped steel beams to be joined at the joint, and a side portion of the transmission plate is welded to an inner portion of the flange; The connecting plate is disposed at a position along the transmission plate; The connecting plate, the transmission plate, and the web are joined by bolts using an H-beam, Inserting the H-beam joined with the joint into the hole drilled by a specified drilling machine. A method for inserting H-beams requiring a joint, characterized by the above.

2. A method for inserting an H-beam requiring a joint into the ground, comprising: the joint includes a plate-shaped transmission plate and a plate-shaped connecting plate, The connecting plate is disposed in a position along the web of each of the H-shaped steel beams to be joined at the joint and in the vicinity of the flange, The transmission plate is disposed at a position along the connecting plate, and a side portion of the transmission plate is welded to an inner portion of the flange; The transmission plate, the connecting plate, and the web are joined by bolts using an H-shaped steel beam, Inserting the H-beam joined with the joint into the hole drilled by a specified drilling machine. A method for inserting H-beams requiring a joint, characterized by the above.

3. A method for inserting H-beams requiring joints into the ground, comprising: The joint comprises a connecting protruding plate provided in a protruding state at an end of one of the H-shaped steel beams to be joined, and a transmission clamping plate provided at the end of the other H-shaped steel beam and clamping the connecting protruding plate, The connecting protruding plate is welded along the web and has its sides welded to the inner side of the flange; The transmission clamping plate comprises an inner plate and an outer plate provided at a position spaced a predetermined distance from the inner plate, the inner plate is welded along the web and has its sides welded to the inner sides of the flanges; The outer plate has its sides welded to the inner side of the flange, The H-beam is formed by connecting the web and the transmission clamping plate, which clamps the connecting protruding plate, with bolts. Inserting the H-beam joined with the joint into the hole drilled by a specified drilling machine. A method for inserting H-beams requiring a joint, characterized by the above.

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