KR20020026895A - Joining method of high strength steel structure - Google Patents

Abstract

PURPOSE: A jointing method of a high-strength steel structure is provided to enlarge the strength and rigidity of a column member without an increase in a section by restraining effects of a steel pipe by filling up a steel pipe column with high-strength concrete, to improve a fire-resistance, to reduce the quantity of steel materials, to exclude the necessity of a form, to utilize space maximally and to reduce the period of construction. CONSTITUTION: The jointing method of a high-strength steel structure comprises the steps of projecting two pairs of projected plates(4,5) on bearing plates(3,3'), forming guide curved pieces(8,9,8',9') on the upper end, fitting fixing pin bolts(7,7') on the lower end with many bolt holes, attaching a rope guide ring(10) and a guide magnet(10a) to the upper end of the bearing plates, welding spigot plates(12) with a reverse V-shaped groove(13) or an inclined part and a rope hole to horizontal beam bearing plates(11,11') welded to H-horizontal beams(2,2') in the shape of T, passing a rope tied up in a rope hole through the guide ring(10), then pulling between a pair of bearing plates and fitting a spigot plate to joint by placing the reverse V-shaped groove and the inclined part over the fixing pin bolt.

Description

Joining method of high strength steel structure

The present invention improves the construction method of the diaphragm joint for the square steel pipe which is used most frequently as a concrete filled steel tube (CFT) column member, which is important for CFT structure construction technology and diaphragm joint design formula of CFT structure design. Particularly, it is related to the joining method of high strength steel structure, which enables the high strength concrete square CFT column to be activated and the rigidity and construction cost greatly reduced by eliminating on-site welding, especially in the field of construction technology.

The connection between the columns and beams of the CFT structure should be secured for the filling of concrete, and the mechanical properties such as the stress transmission mechanism and hysteresis of the joint should be identified, and the effect of the change of detail on the stress transmission mechanism should be determined. The joints consisting of columns and beams of filled steel pipe structures have been proposed and evaluated through experiments and analyzes by many researchers. There are many examples in which structures using filled steel pipes have already been constructed in Japan and Europe. It is often applied directly, and the performance certification type joint system specialized for each construction company is settled.

In Korea, since the early 1990s, performance verification and suggestion of various joint types have been made by experimental research. However, there are not many cases applied to actual buildings. "The Jogyesa Standards and East Guide" (hereinafter referred to as SRC Standard) shows the design method of diaphragm according to the joint configuration, and the mechanical characteristics and design method according to the design of the joint and the joint type. Described,

In case of column and beam connection, it is easy to cause out-of-plane deformation when steel and circular steel pipes are used as pillars. Therefore, when designing steel joints, appropriate reinforcement is required. Diaphragm type Through-diaphragm type is typical, and in the case of round steel pipe, the outer diaphragm type and the inner diaphragm type are generally used. In addition, there are other special types of joints, such as when connecting without diaphragm. Reinforcement method of inner diaphragm type or through diaphragm type having diaphragm on inner surface is effective and effective for stress transfer on beam flange because the extension part of beam flange penetrates the column and is welded to the inside of steel pipe.

Proper construction prevents local stress concentration and secures high stiffness.But there is a possibility of increased work load by cutting and assembling columns and stress concentration points due to split welding process of stiffeners. It is necessary to check the delivery mechanism and determine the details,

The inner diaphragm type joint with the reinforcement plate added to the inside of the column can be changed into round and square depending on the shape of the hole in the reinforcement plate.

Other non-diaphragm type, column penetrating high-strength bolted joint type, longitudinal rib joint type, stiffener (side, vertical) reinforced type joint, special assembly There is a form.

Concrete filled steel pipe structure is filled with high-strength concrete in the steel pipe column, which can greatly increase the strength and rigidity of the column member without increasing the cross-section due to the restraint effect of the steel pipe, and improve the fire resistance, reducing the amount of steel, no formwork, and maximizing space utilization. It is aimed at the excellent construction which has many advantages and economical advantages in terms of design and construction compared to the conventional steel and RC structures such as shortening the construction period, and the bleeding and sinking of concrete is achieved by the development of highly reliable concrete mixing and filling construction methods. It is equipped with an excellent construction system such as small size, high fluidity and low material separation.

These high-strength filled steel pipe columns have been urgently needed for practical use, but studies to support the construction technology of structural systems are insufficient. In particular, the joints of CFT columns and cheolgolbo include external diaphragms or internal diaphragms considering local stress. In the case of the internal diaphragm, when the concrete is poured, it is difficult to fill the concrete under the diaphragm. When the external diaphragm is installed, the field welding is inevitably performed at the joint with the cheolgolbo. Management and construction management is difficult to solve the defects that are acting as a factor of the construction cost increase as described below in detail by the accompanying drawings as follows.

1 is a perspective view of the present invention bonded state

Figure 2 is a perspective view of a state in reverse showing the bonding state of the present invention

Figure 3 is a plan view of the present invention bonded state

Figure 4 is a side view of the present invention bonded state

Figure 5 is an exemplary side view of a state in which both ends of the insertion plate bottom of the present invention is installed in both ends of the steel pipe column in the state consisting of a V groove

6 is an exemplary view showing a state in which the bottom surface of the inserting plate of the present invention is configured by the inclined portion and joined;

7 is an exemplary view showing a state in which the bottom surface of the insertion plate of the present invention is constructed by inverting V grooves and joined;

Figure 8 is an exemplary view of the side installed in the steel pipe column at both ends in the state consisting of the bottom end of the insert plate both ends of the present invention as an inclined portion

9 is a perspective view illustrating a state in which the joint of the present invention can be joined to any point of interruption of the H side beams;

Figure 10 is an exemplary view of the present invention can be attached to the support plate attached to the present invention to the H steel column instead of the steel pipe column

11 is an exemplary view in which the joint of the present invention is mounted on a cylindrical steel pipe column.

Figure 12 A is an illustration of a state in which one of the steel pipe struts of the present invention

Figure 12B is an illustration of a state in which the rape holding cranial cradle of the present invention

Figure 13A is an exemplary view of installing two steel pipe struts of the present invention to install the H sideways

13B is an exemplary view of installing two steel pipe columns of the present invention to install H side beams;

14 is an exemplary view of a modified (modified) state of FIG. 9 of the present invention.

Figure 15 is a perspective view of the H-connected sideways in Figure 14 of the present invention in the opposite direction;

Figure 16 is a modified example of a state of joining by forming a pair of the support plate and the lateral support plate of the present invention

Figure 17 is a perspective view of the separated state of the support plate and the lateral support plate according to Figure 16 of the present invention

Steel pipe pillars (1) (1 ') in joining H-shaped beams (2) (2') (2a) of each type by placing various types of steel pipe pillars (1) (1 ') 30 (40). (30) (40) Weld the support plates 3, 3 ', 3a, 3b, 3c, 28, 28a, 33, 33', 43, 43 'at any point on the outer circumferential surface. These support plates have respective protruding plates (4) (4) (5) (5 ') (24) (25) (24a) (25a) 34 (34') 35 (35 ') (44) (44 ') (45) (45') are protruded, and on both sides of the upper end, the curved guide piece (8) (8 ') (9) (9') 38 (39) (38) '(39') (48) (49) (48 ') 49' (52) (53) and the lower pin bolt (7) (7 ') (27) (27a) (37) (47) (47 ') and then insert the side support plates (11) (11') (11a) (11b) welded to the H side beams to the side support plates (11) (11 ') (11a) (11b). The insert plates 12, 12 ', 12a, 21, 21a are formed in a T-shape, and the lower ends of the insert plates 12, 12', 12a, 21, 21a are attached to the pin bowl. The arc-shaped grooves 15, 15a, 29 and 29a are formed in the inverted V-groove 13 and 23 or the inclined portions 14 to V-vertex vertices. The hole is formed through a sharp hole formed in the inverted V-groove 13, 13 ', 23, 23a, and the inclined portion 14, and the rope 17, 17' is hung over the rope. The guide plate 10, 12 ', 12a, 21 is guided and inserted between the protruding plates by guiding and pulling on the rope guide ring 10 attached to the steel pipe column at the top of the fingerboard, and the guide magnet 10a is magnetic. Induced by

The operation is explained as follows.

First, as shown in Fig. 1, 10, 11, etc., there are various forms of steel pipe columns 1, 1 ', 30, 40, and each of the rape columns is determined by the H-crossing connection point determined at an arbitrary height. Protrusions (4) (4 ') (5) (5') (24) (25) (34) (34 ') (35) (35') (44) (44 ') (45) (45') Weld the angular support plates 3, 3 ', 3a, 3b, 30, 33, 33', 43, 43 'or 28a, which are welded to protrude 24a, 25b. And the welded rope guide ring (10) or guide permanent magnet (10a) is attached to the rope guide ring (10) as the insertion plate 12, 12 '(21) comes down guide curved piece (8) ( 9) It is to be cut and removed when it is guided in between, or to be folded to form an elastic piece so as not to interfere with the insertion plate 12, 12 '(21) is inserted between each support plate,

That is, the ropes inserted into the ropes 17 and 17 'holes 16 drilled in the lower cutting edges of each insertion plate 12, 12' and 21 are inserted into the rope guide ring 10 to protrude the plate 4 ( 5) Pull under the guides between 4 ', 5', and 24 and 25 so that the insertion plates 12, 12 'and 12a are easily inserted between the protrusions 4 and 5. Guide, guide bent pieces 8, 9, 8 ', 9', 38, 39, 38 ', 39', 48, 49, 48 '( 49 'serves to guide the insertion of the insertion plates 12, 12', 12a,

FIG. 12A is an exemplary view showing a state in which one steel pipe column 1 is placed, and the wire 50 is held from above, and FIG. 12B is a state in which steel pipe column 1, 1 'is sequentially placed on both sides. This is an exemplary view, and these are the bolt holes 6, 6 ', 6a, 22, 26, 26a, 36, 36' and 46 as shown in Figs. 1, 4, 10, and 11, respectively. 46 '), and the bottom end is fitted with a pivot bolt (7) (7') (27) (27 ') (27a) (47) (47'), and the upper end of the guide curved piece (8) (8 ') (9). (9 ') 38 (39) (38') 39 '(48) (49) (48') 49 '(52' (53)) consisting of support plates (3) (3 ') (3a) (3b) (3c) (33) (28) (28a) (33 ') (43) (43') welded to any height position determined by the rope guide ring (10) and guide magnet (10a) Is also attached,

FIG. 13A is an exemplary view in which the end of the H side beams 2 is hung with a wire 51 to connect the H side beams 2 to the lower support plates 3c and 3b between the steel pipe columns 1 and 1 '. The lateral support plates 11 and 11 ′ in which the insertion plates 12, 12 ′ and 21 protrude in a T-shape are welded (welded), and the insertion plates 12 of both side support plates 11 and 11 ′ are welded. (12 ') pulls and induces ropes 17 and 17' tied to the rope hole 16 of the lower end of the sharp tip, and is spread as shown in FIG. 13B,

In other words, when both ends are positioned as shown in FIG. 5 or 8, the bolt hole 6 of the protruding end 4 and 5 and the bolt hole 6 'of the insertion plate 12 and 12' coincide with each other. By tightening and joining,

Here, the insertion plate 12 welded in a T-shape to the lateral support plate 11 of the H side beam 2 is between the protruding plates 4 and 5 welded to the support plate 3 of the steel pipe column 1, 1 '. The bolt holes 6 and 6 'are precisely positioned so that the bolt holes 6 and 6' are positioned so as to coincide with each other because they are supported by pinned bolts 7 and 7 'fixed to the lower ends of both protruding plates 4 and 5. ,

In other words, Figure 5. Figure 6. Figure 7. As illustrated in FIG. 8 and the like, the lower end portions of the respective insertion plates 12, 12 'and 21 are spread so as to be accurately positioned on the pin bolts 7 and 7', and the lower end portions of the opposite ends are reverse v-grooves 13 and 23. Or, by forming the semi-circular arc-shaped grooves 15 and 29 at the inclined portion 14 or the reverse v-groove apex, the position is accurately determined.

5 and 7, the lower end of the insertion plate 12 is composed of a reverse v-groove 13 so as to be quickly and accurately positioned on both end pin pins 7 and 7 ′. When the lower end of the insertion plate 12 constitutes the inclined portion 14 as illustrated in FIG. 8, the protruding surface of the insertion plate 12 extends closest to the supporting plate 3, 3 ′. But both sides of the inclined portion 14 is configured so that the rapidity over the exact position tends to fall compared to the reverse v-groove 13,

In addition, as shown in Fig. 9, when the semi-circular arc-shaped grooves 15 and 29 are formed at the apex of the reverse plate grooves 13 and 23 at the lower ends of the insertion plates 12 and 21, the fixing pin bolts 7 and 7 are formed. ') Spans the reverse V-groove 13, 23, there is an effect that is supported more accurately, faster, as well as solid, without flow,

9 is a lateral support plate 11, a support plate 28 and a protruding plate 24, 25, and insertion at the ends or the ends of the H lateral beam 2a and the H connecting lateral beam 20 in addition to the steel pipe column. The plates 12, 21 can be formed and contacted,

FIG. 14 is an exemplary view modified by changing FIG. 9 and includes a bolt hole 6a, a reverse V-groove 13a, and an arc-shaped groove 15a without the horizontal support plate 11 at the cross-section of the H-lateral beam 2b. The plate 12a is directly welded and connected to the stop part by welding the insertion plate 21a constituting the reverse V groove 23a and the arc-shaped groove 29 upside down (inversely), and then the bolt hole 26a and the pin bowl 27a. And the H connecting side beams welded to the ends of the protruding plates 24a and 25a constituting the guide curved pieces 52 and 53 are inserted as shown in FIG. 15 from above and assembled as a bolt nut.

16 and 17 show two sets of pairs of protruding plates 54 and 54 'and inserting plates 56 and 56' formed on the support plate 58 and the lateral support plate 55, respectively. However, the front end is narrow and the rear end is wide, and it shows the state of joining by narrowing back light tunnel. When configured in this way, the result of joining is more robust, but the consumption of materials is slightly added, and there may be some difficulty in assembly.

The steel pipe column and the beam joint of the present invention thus invented have been invented in various representative diaphragm types such as inner and outer penetrations. It is effective to secure the filling property, especially the ease of construction, to maximize the reduction of construction cost due to the shortening of the working time and the quick and accurate of the joining work.

Claims (4)

In the case of placing the steel pipe column and joining the H side beams (2) 92 ') (2a), the support plate (3) is welded to any point on the outer circumferential surface of the steel pipe column (1) (1'). Each pair of protrusions 4, 5, 4 'and 5' is protruded on the 3 ', and the upper end of the guide bent pieces 8, 9, 8', and 9 'is provided. Forming, and the bottom end of the plurality of bolt holes through the fixing pin bolt (7) (7 ') and then attach the rope guide ring (10) and the guide magnet (10a) to the upper end of the support plate and H side beams (2) (2) The side support plates 11 and 11 'welded to the') have a T-shaped inserting plate 12 or 12 'formed of a reverse V-groove 13 or an inclined portion 14 and a rope hole 16 at a lower end thereof. High strength that welds the rope tied to the rope hole through the guide ring 10, pulls it between the pair of support plates, inserts the insertion plate, and joins the reverse V-groove 13 and the inclined portion 14 to the fixing pin bolt. Joining method of steel structure The protrusion plate (34) (35) of Claim 2 which comprised the bolt hole 36, 36 ', the fixed pin bolt 37, and the guide curved piece 38, 39, 38', 39 '. A joining method of a high strength steel structure by welding the support plate 33, 33 'welded 34') (35 ') to the H steel column 30 together with the connecting plate 31. The insertion plate 12a in which the bolt hole 6a and the reverse v-groove 13a are formed at the end of the H side beam 2b to form a semicircular arc-shaped groove 15a at the apex is welded, and the H side beam ( 2b) In the middle of the reverse V-groove 23a, the insertion plate 21a having the semicircular arc-shaped groove 29a is welded, and then the bolt hole 26a, the fixed pin bolt 27a and the guide curved piece 52 are formed. A joining method of a high-strength steel frame structure in which a support plate (28a) welded with the protruding plates (24a) and (24b) constituting (53) is welded to an H connecting crossbeam (29a) and assembled to the inserting plate (21a). The method of claim 1, wherein the support plate 58 and the lateral support plate 55, respectively, a pair of protruding plate 54, 54 'and the insertion plate 56, 56' is configured to be narrowed back light, characterized in that the joining Joining method of a high strength steel structure.