Connection structure for steel members using tension bolts

Abstract

The present invention relates to a connection structure for steel members using tension bolts, wherein, during on-site splicing of steel members installed for the construction of steel-concrete composite members, each tension bolt is fastened into fastening holes in connectors coupled to respective steel members at connecting end portions thereof, so as to provide a simple and clear stress transfer mechanism as well as excellent constructability, thereby facilitating design and securing structural stability.

Description

Connection structure of steel members using tension bolts

[0001] The present invention relates to a joint structure of a steel member using a tension bolt, which ensures structural stability and facilitates design by having excellent constructability and a simple and clear stress transfer mechanism, by fastening a tension bolt into a fastening hole of a joint member coupled to one side of the joint end of the steel member when the steel member is installed for construction of a steel-composite concrete member.

[0002] Reinforced concrete members are constructed in the sequence of installing formwork, arranging reinforcing bars inside the formwork, pouring concrete, and curing.

[0003] Conventional reinforced concrete construction methods require a long construction period and make it difficult to ensure uniform quality because formwork installation and rebar placement are carried out on-site. In addition, separate temporary materials must be installed to support the formwork and resist the pressure of concrete pouring, which adds installation and dismantling processes. Furthermore, interference from these temporary materials makes it difficult to secure on-site workspace and passageways, and raises concerns about safety accidents.

[0004] In particular, large members are used in structures requiring high ceilings and long spans, such as semiconductor and display factories and logistics centers. However, the use of large members inevitably requires working at heights during construction, which reduces workability and safety, and increases construction costs due to the larger scale required for temporary materials such as system supports.

[0005] In addition, conventional formwork construction involves applying a release agent to the surface of the formwork panels to facilitate formwork removal. However, the release agent poses a problem of causing environmental pollution, and it is cumbersome as it requires separate concrete surface treatment work after formwork removal.

[0006] Accordingly, various types of steel-concrete composite members have been developed that allow for the omission of tasks such as formwork installation and removal, and rebar placement.

[0007] Among these, the CFT (Concrete Filled Tube) column is constructed by filling concrete inside a steel tube. Since there is no distinction between the strong and weak axes, it is structurally more efficient than an H-shaped steel column. Furthermore, because the steel tube not only acts as formwork but also restrains the internal concrete, increasing strength and ductility, the column's load-bearing capacity is improved, allowing the column cross-section to be minimized (Registered Patent No. 10-2515590, etc.).

[0008] Since these CFT columns are composed of closed sections, internal work is difficult, so the upper and lower columns are joined by welding on-site. However, on-site welding requires a long time, is heavily affected by site conditions such as weather, and makes it difficult to ensure homogeneous joint quality.

[0009] In addition, PSRC (Prefabricated Steel Reinforced Concrete) columns are steel column members in which L-shaped steel sections placed at the corners of the column cross-section are connected by horizontal support members, and a lightweight permanent formwork made of thin plates is pre-assembled on the exterior (Registered Patents No. 10-1490748, No. 10-2029302, etc.).

[0010] PSRC columns eliminate the need for on-site rebar placement and formwork installation, and their relatively light weight allows for larger sizes and easy connection to beams.

[0011] When joining the upper and lower columns of these PSRC columns, a cover plate is attached to the outside of the L-shaped steel of the upper and lower columns and joined with friction bolts.

[0012] However, the conventional joining method using friction bolts requires friction bolts to be fastened to the ends of each steel section being joined, resulting in a large number of bolt fastening points and requiring a significant amount of work time. Additionally, the formation of bolt fastening holes causes cross-sectional defects in the steel sections, making it structurally disadvantageous. Furthermore, since friction bolts must penetrate the steel sections and be fastened simultaneously from both the inside and outside, the fastening process is cumbersome. Moreover, in closed sections, it is impossible to insert a hand into the steel section, making nut fastening impossible. In addition, because the joint length between the upper and lower steel sections is long, formwork cannot be pre-assembled at the joint, resulting in the inconvenience of having to install additional formwork at the site.

[0013] To solve the above-mentioned problems, the present invention aims to provide a connection structure for steel members using tension bolts that ensures structural stability and facilitates design by having a simple and clear stress transfer mechanism, while offering excellent constructability when on-site joining of steel members installed for the construction of steel-composite concrete members.

[0014] The present invention, according to a preferred embodiment, provides a joining structure of steel members using a tension bolt, characterized by comprising: a first joining member coupled to one side of the joining end of the first steel member; a second joining member coupled to one side of the joining end of the second steel member; and a tension bolt fastened to a first fastening hole formed in the first joining member and a second fastening hole formed in the second joining member to mutually join the first joining member and the second joining member.

[0015] According to another preferred embodiment, the present invention provides a joining structure of steel members using a tension bolt, characterized in that the first joining member and the second joining member are each formed in a long bar shape along the width direction at the ends of the first steel member and the second steel member.

[0016] According to another preferred embodiment, the present invention provides a joining structure of steel members using a tension bolt, characterized in that the first joining member comprises a first bolt fastening part in which the first fastening hole is formed and the tension bolt is fastened, and a first fixing plate provided on each of the left and right sides of the first bolt fastening part and fixed to the first steel member by a fixing bolt, and the second joining member comprises a second bolt fastening part in which the second fastening hole is formed and the tension bolt is fastened, and a second fixing plate provided on each of the left and right sides of the second bolt fastening part and fixed to the second steel member by a fixing bolt.

[0017] According to another preferred embodiment, the present invention provides a joining structure of a steel member using a tension bolt, characterized in that a plurality of first joining members and second joining members are provided spaced apart from each other in the transverse direction, a third joining member having the same shape as the second joining member is provided between the spaced-apart first joining members and is staggered with respect to the first joining member and fixed to the first steel member, and a fourth joining member having the same shape as the first joining member is provided between the spaced-apart second joining members and is staggered with respect to the second joining member and fixed to the second steel member, and the third joining member and the fourth joining member are joined to each other by a tension bolt.

[0018] According to another preferred embodiment, the present invention provides a joining structure of a steel member using a tension bolt, characterized in that an internal screw thread is formed on the inner surface of the second fastening hole, and the end of the tension bolt penetrating the first fastening hole is screw-coupled thereto.

[0019] According to the present invention, by fastening a tension bolt into a fastening hole of a joint member coupled to one side of the joint end of adjacent steel members, a connection structure for steel members using a tension bolt that can be simply joined on-site can be provided.

[0020] Accordingly, the stress transfer mechanism for tension and compression between adjacent steel members is simple and clear, facilitating design and ensuring structural stability. Furthermore, since a single tension bolt is fastened to both steel members simultaneously, the number of bolt fastening points is significantly reduced compared to conventional friction bolt methods, and work time can be greatly shortened. Additionally, because the tension bolt does not penetrate the steel members, bolt fastening is possible from the outside, making construction easier.

[0021] FIG. 1 is a perspective view illustrating the connection relationship between a first joint and a second joint.

[0022] FIG. 2 is a cross-sectional view illustrating the connection state of the first and second joints by a tension bolt.

[0023] FIG. 3 is a cross-sectional view illustrating the state in which the height adjustment bolt is installed.

[0024] FIG. 4 is a perspective view illustrating the state in which a tension bolt and a height adjustment bolt are installed.

[0025] FIG. 5 is a perspective view illustrating the first joint.

[0026] FIG. 6 is a perspective view illustrating a second joint.

[0027] FIG. 7 is a perspective view illustrating the connection relationship between the first and second joints and the first and second steel frame members.

[0028] FIG. 8 is a perspective view illustrating the connection relationship between the first and second joint members and the tension bolt.

[0029] FIG. 9 is a perspective view illustrating the state in which a tension bolt is coupled to the first and second joints.

[0030] FIG. 10 is a front view illustrating the state in which the first to fourth joints are installed.

[0031] FIG. 11 is a cross-sectional perspective view illustrating an embodiment in which a tension bolt is screw-coupled to a second joint.

[0032] FIG. 12 is a cross-sectional view illustrating the combined state of the first joint and the second joint shown in FIG. 11.

[0033] To achieve the above objective, the joining structure of a steel member using a tension bolt according to the present invention is for joining an adjacent first steel member and a second steel member, and is characterized by comprising: a first joining member coupled to one side of the joining end of the first steel member; a second joining member coupled to one side of the joining end of the second steel member; and a tension bolt that is fastened to a first fastening hole formed in the first joining member and a second fastening hole formed in the second joining member to mutually join the first joining member and the second joining member.

[0034] The present invention will be described in detail below according to the attached drawings and preferred embodiments.

[0035]

[0036] FIG. 1 is a perspective view illustrating the connection relationship between a first joint member and a second joint member, and FIG. 2 is a cross-sectional view illustrating the connection state of the first and second joint members by a tension bolt. FIG. 3 is a cross-sectional view illustrating the state in which a height adjustment bolt is installed, and FIG. 4 is a perspective view illustrating the state in which a tension bolt and a height adjustment bolt are installed.

[0037] As illustrated in FIGS. 1 to 4, the joining structure of steel members using the tension bolt of the present invention is for joining adjacent first steel members (1a) and second steel members (1b), and is characterized by being composed of: a first joining member (2a) coupled to one side of the joining end of the first steel member (1a); a second joining member (3a) coupled to one side of the joining end of the second steel member (1b); and a tension bolt (4) that is fastened to the first fastening hole (201) formed in the first joining member (2a) and the second fastening hole (301) formed in the second joining member (3a) to mutually join the first joining member (2a) and the second joining member (3a).

[0038] The present invention aims to provide a connection structure for steel members using tension bolts that ensures structural stability and facilitates design by having a simple and clear stress transfer mechanism, while offering excellent constructability when field joining steel members installed for the construction of steel-composite concrete members.

[0039] The present invention is for joining a first steel member (1a) and a second steel member (1b) installed for the construction of steel composite concrete columns or beams.

[0040] The first and second steel members (1a, 1b) include members in which steel members are placed on the outer edge of the cross-section of the member, such as CFT or TSC beams, PSRC columns or beams in which structural steel is placed on the outer edge of the member.

[0041] In order to join adjacent first steel member (1a) and second steel member (1b), a first joining member (2a) and a second joining member (3a) are provided at the joining ends of the first steel member (1a) and the second steel member (1b), respectively.

[0042] The first joint member (2a) is joined to one side of the joint end of the first steel member (1a).

[0043] The second joint member (3a) is joined to one side of the joint end of the second steel member (1b) to be joined to the first steel member (1a) at a position corresponding to the first joint member (2a).

[0044] The first joint (2a) and the second joint (3a) are joined together by a tension bolt (4).

[0045] To this end, the first joining member (2a) and the second joining member (3a) each have a first fastening hole (201) and a second fastening hole (301) formed at corresponding positions.

[0046] The above tension bolt (4) passes through the first fastening hole (201) and the second fastening hole (301), so that the head of one end of the tension bolt (4) is caught on the upper surface of the drawing of the first joint (2a), and a nut (41) that is caught on the lower surface of the second joint (3a) can be fastened to the other end of the tension bolt (4) (Fig. 2, etc.).

[0047] It is preferable that the first joint member (2a) and the second joint member (3a) be connected to the outer surfaces of the first steel member (1a) and the second steel member (1b) so that the above tension bolt (4) can be easily fastened.

[0048] The tensile force acting between the first steel member (1a) and the second steel member (1b) being joined is directly transmitted by the tension bolt (4). The compressive force acting between the first steel member (1a) and the second steel member (1b) is transmitted by the direct bearing pressure between the first joint (2a) and the second joint (3a) or by the bearing pressure of concrete poured between the first joint (2a) and the second joint (3a). Accordingly, the stress transmission mechanisms for tension and compression are configured separately.

[0049] When the first steel member (1a) and the second steel member (1b) are column members, the steel column joint is not high in height and can be sufficiently embedded inside the beam or slab concrete.

[0050] Therefore, even when the present invention is applied to PSRC columns, the omission section of the formwork pre-assembled in the factory is short, so there is no need to install joint formwork separately at the construction site.

[0051] In addition, since a separate on-site welding process is unnecessary when joining steel members, homogeneous quality can be ensured, and since joining work can be done from the outside of the steel members, constructability is excellent.

[0052]

[0053] As shown in FIGS. 1 and 2, the first joint (2a) and the second joint (3a) can be formed in a long bar shape along the width direction at the ends of the first steel member (1a) and the second steel member (1b), respectively.

[0054] In order to evenly transmit stress without stress concentration over the entire cross-section of the steel member, the first joint (2a) and the second joint (3a) can be configured in the shape of a long bar.

[0055] At this time, the first joint (2a) and the second joint (3a) can be formed of steel and welded to the first steel member (1a) and the second steel member (1b), respectively.

[0056] A plurality of first fastening holes (201) may be formed in the bar-shaped first joint (2a) so as to be spaced apart from each other along the length direction of the first joint (2a). Similarly, a plurality of second fastening holes (301) may be formed in the bar-shaped second joint (3a) at positions corresponding to the first fastening holes (201).

[0057] That is, a plurality of tension bolts (4) can be simultaneously fastened to a set of first joint members (2a) and second joint members (3a).

[0058] Therefore, the above tension bolt (4) is fastened across the entire cross-section of the steel member, enabling even stress transfer, and the stress that each individual tension bolt (4) must bear is reduced, allowing the cross-section of the tension bolt (4) to be minimized.

[0059] In order to weld a bar-shaped joint (2a, 3a) to one side of a steel member (1a, 1b), a chamfer can be formed on the corner of the joint (2a, 3a) on the steel member (1a, 1b) side to fill in the weld.

[0060]

[0061] As shown in FIG. 2, the first steel member (1a) and the second steel member (1b) may be arranged in close contact with each other. Alternatively, as shown in FIG. 3 and FIG. 4, the first steel member (1a) and the second steel member (1b) may be spaced apart from each other for the purpose of allowing reinforcing bars to pass through between them.

[0062] When the first steel member (1a) and the second steel member (1b) are spaced apart from each other, the tension bolt (4) connecting the first joint (2a) and the second joint (3a) transmits only tensile force at the joint and therefore only passes through the first fastening hole (201) of the first joint (2a) and is not separately screw-connected. Therefore, the tension bolt (4) cannot support the spaced-apart first steel member (1a).

[0063] Therefore, a separate height adjustment bolt (6) that can be adjusted in height can be installed to maintain the distance between the first and second steel members (1a, 1b).

[0064] When installing the height adjustment bolt (6), a fixing nut (61) can be installed on the lower part as well as the upper part of the first joint (2a) to maintain the spacing of the first joint (2a).

[0065]

[0066] FIG. 5 is a perspective view illustrating a first joint, FIG. 6 is a perspective view illustrating a second joint, and FIG. 7 is a perspective view illustrating the connection relationship between the first and second joints and the first and second steel members. FIG. 8 is a perspective view illustrating the connection relationship between the first and second joints and a tension bolt, and FIG. 9 is a perspective view illustrating the state in which a tension bolt is connected to the first and second joints.

[0067] As illustrated in FIGS. 5 to 9, the first joint member (2a) may be composed of a first bolt fastening part (21) in which the first fastening hole (201) is formed and the tension bolt (4) is fastened, and a first fixing plate (22) provided on each of the left and right sides of the first bolt fastening part (21) and fixed to the first steel member (1a) by a fixing bolt (5), and the second joint member (3a) may be composed of a second bolt fastening part (31) in which the second fastening hole (301) is formed and the tension bolt (4) is fastened, and a second fixing plate (32) provided on each of the left and right sides of the second bolt fastening part (31) and fixed to the second steel member (1b) by a fixing bolt (5).

[0068] When the bar-shaped joint (2a, 3a) shown in FIG. 1 is welded to one side of the steel member (1a, 1b), the weld bar protrudes, so the bar thickness must be increased to fasten the tension bolt (4). In this case, the length of the joint (2a, 3a) protruding from the steel member (1a, 1b) is long, so interference with other members may occur.

[0069] In addition, these protrusions reduce loading efficiency when transporting parts by vehicle.

[0070] Accordingly, the protruding length of the connecting member (2a, 3a) joined to the steel member (1a, 1b) is minimized, and the connecting member (2a, 3a) can be assembled on-site as needed. The first connecting member (2a) and the second connecting member (3a) can be joined to the first steel member (1a) and the second steel member (1b), respectively, using a fixing bolt (5).

[0071] To this end, the first joint member (2a) may be composed of a first bolt fastening part (21) for fastening a tension bolt (4) and a first fixing plate (22) that is fixed to the first steel member (1a) by a fixing bolt (5).

[0072] In the first bolt fastening part (21) above, the first fastening hole (201) is formed through in the longitudinal direction of the first steel member (1a), that is, in the fastening direction of the tension bolt (4).

[0073] The first fixing plate (22), which is provided on each of the left and right sides of the first bolt fastening part (21), is formed in a plate shape and is in close contact with one side of the first steel frame member (1a).

[0074] A fixing hole (221) into which a fixing bolt (5) is fastened may be formed in the first fixing plate (22) (Figs. 5, 7). A fixing hole (101) for fixing the first fixing plate (22) may also be formed in the first steel frame member (1a).

[0075] A nut (51) can be fastened to one end of a fixing bolt (5) that passes through the fixing hole (101) of the first steel member (1a) and the fixing hole (221) of the first fixing plate (22) to connect the first joint member (2a) to the first steel member (1a).

[0076] The above fixing bolt (5) may be a TS bolt.

[0077] In the second steel member (1b) located facing the first joint member (2a), a second joint member (3a) having the same structure as the first joint member (2a) may be provided symmetrically.

[0078] The second joint (3a) above can also be composed of a second bolt fastening part (31) and a second fixing plate (32) in the same way as the first joint (2a).

[0079] The second fastening hole (301) is formed through the second bolt fastening part (31) in the longitudinal direction of the second steel frame member (1b). Female screw threads may be formed on the inner surface of the second fastening hole (301).

[0080] The second fixing plate (32), which is provided on each of the left and right sides of the second bolt fastening part (31), is formed in a plate shape and is in close contact with one side of the second steel frame member (1b).

[0081] A fixing hole (321) into which a fixing bolt (5) is fastened may be formed in the second fixing plate (32) (Figs. 6 and 7). A fixing hole (101) for fixing the second fixing plate (32) may also be formed in the second steel frame member (1b).

[0082] The second joint member (3a) can be connected to the second steel member (1b) by fastening a fixing bolt (5) that passes through the fixing hole (101) of the second steel member (1b) and the fixing hole (321) of the second fixing plate (32).

[0083] In this way, when the first and second joints (2a, 3a) are fixed to the first and second steel members (1a, 1b) by a fixing bolt (5) instead of welding, there is no interference from the welding bar, so the tension bolt (4) can be brought as close as possible to the steel members (1a, 1b). Accordingly, the protruding length of the first and second bolt fastening parts (21, 31) can be minimized.

[0084] The first and second joints (2a, 3a) may be brought to the site pre-assembled with the first and second steel members (1a, 1b) at the factory. Alternatively, the first and second joints (2a, 3a) may be brought in separately from the steel members (1a, 1b) and then assembled at the site.

[0085] In a state where the first and second connecting members (2a, 3a) are connected to the above steel members (1a, 1b), adjacent steel members (1a, 1b) can be connected by fastening a tension bolt (4) into the fastening hole (201, 301) provided in the bolt fastening part (21, 31) of the first and second connecting members (2a, 3a) (Figs. 8, 9).

[0086] At this time, the head provided at one end of the tension bolt (4) is hooked onto the upper part of the drawing of the first bolt fastening part (21), and the other end can be screw-coupled to the second fastening hole (301) of the second bolt fastening part (31).

[0087] The above first and second joints (2a, 3a) may be pre-assembled at the factory with the steel members (1a, 1b) using fixing bolts (5) which are friction bolts, and then brought to the site, or they may be assembled at the site.

[0088]

[0089] FIG. 10 is a front view illustrating the state in which the first to fourth joints are installed.

[0090] As shown in FIG. 10, a plurality of first joint members (2a) and second joint members (3a) are provided spaced apart from each other in the transverse direction, and between the spaced-apart first joint members (2a), a third joint member (3b) of the same shape as the second joint member (3a) is provided spaced apart from the first joint member (2a) and fixed to the first steel member (1a), and between the spaced-apart second joint members (3a), a fourth joint member (2b) of the same shape as the first joint member (2a) is provided spaced apart from the second joint member (3a) and fixed to the second steel member (1b), and the third joint member (3b) and the fourth joint member (2b) can be joined together by a tension bolt (4).

[0091] As in the embodiments of FIGS. 5 to 9, when the first and second connecting members (2a, 3a) are individually configured for each tension bolt (4), the ends of the first and second fixing plates (22, 32) are formed protruding left and right on both sides of the first and second bolt fastening members (21, 31).

[0092] Therefore, the first and second fixing plates (22, 32) of the first and second joints (2a, 3a) interfere with each other with the first and second fixing plates (22, 32) of the adjacent first and second joints (2a, 3a), so the installation spacing of the tension bolts (4) cannot be installed sufficiently narrowly. In this case, there is a limit to the number of tension bolts (4) that can be installed, so large-diameter tension bolts (4) must be used.

[0093] Accordingly, adjacent first joint members (2a) are spaced apart from each other, and a third joint member (3b) of the same shape as the second joint member (3a) can be fixedly installed on the first steel member (1a) between the adjacent first joint members (2a).

[0094] At this time, in order to minimize the gap between the first joint (2a) and the third joint (3b), the first joint (2a) and the third joint (3b) may be installed so as to partially overlap in a planar manner so as to be staggered from each other in the elevation view of the drawing.

[0095] That is, the first joint (2a) is positioned at a certain distance from the end of the first steel member (1a), and the third joint (3b) can be installed close to the end of the first steel member (1a) which is forward of the first joint (2a).

[0096] In correspondence with this, the second joint member (3a) is also arranged to be spaced apart from each other to the left and right, and a fourth joint member (2b) of the same shape as the first joint member (2a) can be fixedly installed on the second steel member (1b) between adjacent second joint members (3a).

[0097] The above-mentioned fourth joint (2b) can be installed so as to be staggered with the second joint (3a).

[0098] That is, the second joint (3a) facing the first joint (2a) can be installed so as to be close to the end of the second steel member (1b), and the fourth joint (2b) facing the third joint (3b) can be installed at a certain distance from the end of the second steel member (1b).

[0099] The above third joint (3b) and fourth joint (2b) can be joined together by a tension bolt (4), just like the first joint (2a) and second joint (3a).

[0100] In this way, when the third joint (3b) is arranged in an alternating manner so as to overlap between adjacent first joints (2a) and the fourth joint (2b) is arranged in an alternating manner so as to overlap between adjacent second joints (3a), the spacing between adjacent tension bolts (4) can be minimized, and accordingly, steel members (1a, 1b) can be stably joined even with small diameter tension bolts (4).

[0101] At this time, the third joint (3b) is provided in front of the first joint (2a). Therefore, in order to fasten the tension bolt (4) so ​​that the head of the tension bolt (4) is positioned on the side of the third joint (3b), the tightening tool may interfere with the first fixing plate (22) when tightening the tension bolt (4).

[0102] Therefore, it is preferable that the tension bolt (4) be fastened on the side of the fourth joint (2b), which is located further back than the second joint (3a) and does not interfere with the second fixing plate (32).

[0103] Accordingly, unlike when combining the first joint (2a) and the second joint (3a), the third joint (3b) on the side of the first steel member (1a) can be formed in the same way as the second joint (3a), and the fourth joint (2b) on the side of the second steel member (1b) can be formed in the same way as the first joint (2a).

[0104] Then, the direction in which the tension bolt (4) is fastened to the first and second joints (2a, 3a) and the direction in which the tension bolt (4) is fastened to the third and fourth joints (3b, 2b) are opposite to each other, so the tension bolt (4) can be fastened without interference with the fixing plate (22, 32).

[0105]

[0106] FIG. 11 is a cross-sectional perspective view illustrating an embodiment in which a tension bolt is screw-coupled to a second joint member, and FIG. 12 is a cross-sectional view illustrating the combined state of the first joint member and the second joint member shown in FIG. 11.

[0107] As shown in FIG. 11, FIG. 12, etc., female screw threads are formed on the inner surface of the second fastening hole (301) so that the end of the tension bolt (4) passing through the first fastening hole (201) can be screw-coupled.

[0108] In order to join the first joint (2a) and the second joint (3a) using a tension bolt (4) and a nut (41), the nut (41) must be fixed on the side of the second joint (3a), and then the tension bolt (4) must be tightened on the side of the first joint (2a), so the workability is poor.

[0109] In addition, the tension bolt (4) must penetrate the first and second joints (2a, 3a) and protrude more than the thickness of the nut (41) to the rear of the second joint (3a), in which case the length of the tension bolt (4) increases by that amount.

[0110] Accordingly, the first fastening hole (201) formed in the first joint (2a) can be configured so that the inner diameter is slightly larger than the diameter of the tension bolt (4) to allow the tension bolt (4) to pass through. In addition, the second fastening hole (301) formed in the second joint (3a) can be formed so that the inner diameter is the same as the diameter of the tension bolt (4), and female screw threads are formed on the inner surface so that the end of the tension bolt (4) can be screw-coupled.

[0111] Accordingly, the tension bolt (4) can be fastened in one direction from the first joint (2a) side, and there is no need to protrude the end of the tension bolt (4) by passing it through the second joint (3a).

[0112] The joint structure of a steel member using a tension bolt according to the present invention has industrial applicability in that, when a steel member is joined on-site to construct a steel composite concrete member, a tension bolt is fastened into a fastening hole of a joint member coupled to one side of the joint end of the steel member, thereby ensuring excellent constructability, a simple and clear stress transfer mechanism, easy design, and structural stability.

Claims

1. For joining adjacent first steel member (1a) and second steel member (1b), A first joining member (2a) coupled to one side of the joining end of the first steel frame member (1a); A second joint member (3a) coupled to one side of the joint end of the second steel member (1b); and A joining structure of steel members using a tension bolt, characterized by comprising: a tension bolt (4) that is fastened to the first fastening hole (201) formed in the first joining member (2a) and the second fastening hole (301) formed in the second joining member (3a) to mutually join the first joining member (2a) and the second joining member (3a).

2. In Paragraph 1, A joining structure of steel members using tension bolts, characterized in that the first joining member (2a) and the second joining member (3a) are each formed in a long bar shape along the width direction at the ends of the first steel member (1a) and the second steel member (1b).

3. In Paragraph 1, The first joint member (2a) is composed of a first bolt fastening part (21) in which the first fastening hole (201) is formed and the tension bolt (4) is fastened, and a first fixing plate (22) which is provided on each of the left and right sides of the first bolt fastening part (21) and is fixed to the first steel member (1a) by a fixing bolt (5). The above second joint member (3a) is characterized by being composed of a second bolt fastening part (31) in which the second fastening hole (301) is formed and the tension bolt (4) is fastened, and a second fixing plate (32) which is provided on each of the left and right sides of the second bolt fastening part (31) and is fixed to the second steel member (1b) by a fixing bolt (5).

4. In Paragraph 3, The above first joining member (2a) and second joining member (3a) are provided in multiple numbers spaced apart from each other in the transverse direction, Between mutually spaced first joints (2a), a third joint (3b) having the same shape as the second joint (3a) is provided in an alternating manner with the first joint (2a) and is fixed to the first steel member (1a). Between the mutually spaced second joint members (3a), a fourth joint member (2b) having the same shape as the first joint member (2a) is provided in an alternating manner with the second joint member (3a) and is fixed to the second steel member (1b). A joining structure of steel members using a tension bolt, characterized in that the third joining member (3b) and the fourth joining member (2b) are joined to each other by a tension bolt (4).

5. In Paragraph 1, A joining structure of steel members using a tension bolt, characterized in that a female screw thread is formed on the inner surface of the second fastening hole (301) above, and the end of the tension bolt (4) that passes through the first fastening hole (201) is screw-coupled.

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