WO2002097153A1

WO2002097153A1 - Method of hot-dip galvanizing i-shaped structural member

Info

Publication number: WO2002097153A1
Application number: PCT/JP2002/005122
Authority: WO
Inventors: Kazuo Handa; Yoshihiro Murakami; Hirotsugu Fujimoto; Masayuki Fujimoto; Koji Yanagawa; Kohei Kikukawa
Original assignee: E Tech Incorporated
Priority date: 2001-05-25
Filing date: 2002-05-27
Publication date: 2002-12-05

Abstract

Deformations such as bulging, twisting and bending are prevented during the process of hot-dip galvanizing an I-shaped structural member. When an I-shaped structural member having flanges (2) at the top and bottom of a web (1) is to be hot-dip galvanized, two I-shaped structural members are juxtaposed with webs (1) kept vertical, a plurality of portions including lateral opposite ends of the members are linked together by a binding member (3) at the webs (1) and the flanges (2) to form a pseudo single structure, and the members are hot-dip galvanized in this condition.

Description

Hot-dip solder plating method with I-shaped structural sound

The present invention relates to an I-shaped structure, and more particularly to a method for melting an I-shaped structural member for a bridge. Background leakage

Various types of steel structural members are widely used for construction and bridges. The β members for bridges vary depending on the type of rice girder type, box type, truss type, etc. Among them, the sheet girder type has a web (also called I 复 plate) 1 as shown in Fig. 13 At the upper and lower parts, a boat I with a flange 2 attached by welding or the like is used. These 1-types can be used as vertical stiffeners and salivary stiffeners as shown in the examples.) 3, or by welding a flat stiffener (not shown) to both sides or one side of the web 1. , I type ¾ ^ 咅咅 reinforced and prevent its deformation. In addition, since such an I-shaped Jiangsu attachment is used by being connected in a vertical direction, a large number of joint port holes or joint holes are formed on both webs 1 and flanges 2 as shown in Fig. 13. Is provided. On the other hand, when the “I-shaped structure” is used for β, etc., it is painted or plated with lead (hereinafter simply referred to as “plate”) to prevent hood. The latter zinc plating is carried out by immersing the ΛΜίI member in a molten M plating bath (approx. 440 ° C), usually 4 ~; L for 0 min, then lifting the bow from the bath and cooling it. . The protection by such a hot-dip lead has superior corrosion resistance compared to painting [life and economy], but has a major problem of deformation as described below.

In other words, if the tidal shape of * λ and the complicated cross-section like the I-shaped structure for sheet girder and the anti-I-shaped structure sound is melted, residual deformation such as web skewing, torsional deformation of the girder, and bending deformation will occur. Despite the differences, they always occur. In the plating process of type I 音 ^ 音変形起因熱変形変形変形変形変形変形変形変形変形変形変形変形変形変形変形変形変形変形変形変形. In the welding process, deformation of the web attached to the I 开 O 开 occurs, and the ffi shrinkage force generated on the upper and lower flanges in the following process acts eccentrically due to the distorted deformation, resulting in a twisted seat. It is believed that bowing occurs.

Such intrusion and torsion in the I-shape section change under the influence of the web height and height, the yield of steel 降, etc., and the smaller the thickness, the larger the height, and the higher the yield strength, It increases as the degree decreases. The deformation also depends on the thickness ratio between the flange and the web, the plating immersion conditions, and the like. As the plate thickness ratio increases and the plating immersion speed decreases, these deformations tend to increase. In particular, torsion, in addition to these factors, naturally increases with the length of the member.

Conventionally, as a measure to prevent deformation of the I 开麵 member when it is damaged, a method has been proposed in which deformation preventing members (hereinafter referred to as “flap stop members”) are attached to both ends of the web in the direction of guidance. This is an example of this method.A schematic diagram of the case where the webbing 1 is attached to the two webs 1 with the I-shaped structural sound using the sheet girder by attaching It is. As shown in the figure, the method is as follows: a stake stopper 4 made of Oka IJ is attached to both sides of the joint portion of the web 1 by firmly using a port 6 and attached. ¾¾ It is intended to prevent or reduce the thermal deformation generated in I-shaped bridge members during the lead plating process.

If the above method of turning the stopper material is not difficult, the amount of deformation of the stopper generated at the end of the web in the molten MM lead plating process is considerably increased. Therefore, it can be said that this stopper material is one of the measures to prevent the deformation at the edge of the web. However, this method is only to prevent the end of the I-shaped structural sound from sticking, and has little effect on the prevention of the end of the end portion from being stuck or twisted. Even if the anti-sling material attached to I 开 ^ ffit 設け is provided, it is still open and has a degree of freedom of deformation. It has almost no effect on deformations such as torsion and bending, and these deformations occur in the same way as in the UK without the provision of anti-jamming material.

Even if the web at the end of I 开 ^ S 咅 can be prevented from being entangled and deformed, if it is twisted or bent, if the I 开 ^ 咅 is connected with a joint at the site and β is assembled, let's connect Β ^ of the joint part attached to I 开 Munon is reluctant to Nada. In addition, if the amount of deformation exceeds the permissible amount, it becomes extremely difficult to install the joint. In this case, it is necessary to correct the deformation mechanically on site at a large scale.

Therefore, such a twist or bend poses a major problem in performing ^ ffl with I-ring as a β-sound. As a solution to this problem, it is conceivable to devise the thickness and shape of the structure of the I-shaped sound attachment itself, but at present, these deformations have not been prevented. For example, increasing the thickness of the web is a big problem in terms of increasing the mass, but even if you enjoy the lm mJ of the web, the I-shape is open: Therefore, twisting and bending cannot be avoided as long as zinc plating is performed. In particular, for the thickness of the web, If it is quite thick (for example, 1: 3 or more), and if the sound length is long (for example, 12 m or more), the shape of the I-shaped material due to zinc plating will be more twisted or bent, and the web will be more stuck at the end. growing.

Until now, there has been no known effective and effective deformation prevention method for Ml self-locking material_¾ ^ in zinc plating of I-shaped β member. For this reason, despite the fact that zinc plating girders are recognized to be superior, including covering, to bridge plating ffi, compared to paint deposition, discomfort due to self-destructive thermal deformation has become a major obstacle. Is in a state of being late.

In view of the above, the present invention provides a simple and inexpensive plating method that can prevent deformation such as entanglement, twisting, bending, etc., of zinc plating of I 开 port construction members converted to sheet girder. It is also effective for transportation, storage, and construction of the I-type. Disclosure of the invention

The present invention has been obtained as a result of various studies to achieve the three objectives, and has the following constitutional requirements.

(1) In a method of zinc plating an I 开 ffit sound with flanges at the upper and lower portions of the web, a plurality of

In a state in which adjacent I-ring members are connected by a binding member at a plurality of members including both ends in the tt ^ direction of the I-shaped itit member, it is immersed in a molten MM lead plating bath to cause sub-meshing. I I type «3i 咅 1 year old 溶ツ

(2) In the method of mounting the I-shape with flanges on the upper and lower parts of the web, a plurality of touches I 开At a plurality of places including both ends of the guidance direction, the outside of the flange and the Z or web side of the I-shaped structural member are tied with a restraint and immersed in a molten plating bath to perform zinc plating; ^ The lead plating method of I type

(3) In the method of zinc-placing the I-shaped «咅 attachment with the flanges at the upper and lower parts of the web, a plurality of ¾1 形 -shaped members are turned to the web», and the adjacent I-shaped attachments The web and the flange are immersed in a molten a @ E lead plating bath and zinc plated in a state where the web and the flange are connected by a restraining member at a plurality of locations including both ends in the vertical direction of the I-shaped structural member. A method of melting indigenous materials. () Flanges at the top and bottom of the web: In the method of zinc plating the I-shaped ί 咅、、、、、複数複数 IS IS IS IS IS IS IS IS IS IS The web is connected by a restraining member at a plurality of locations including both sides of the I-shaped structure member, and the web is immersed in a molten SSE lead plating bath in a state where the webbing is vertically attached. A method for melting I-shaped structural members, characterized by zinc plating.

(5) In the I-shaped «S-applied» method with flanges at the top and bottom of the web, a plurality of 开複数 ¾ 部材 members are turned in the vertical direction, and both ends in the direction of the adjacent I-shaped members. At the important point including the part, a pair of restraints attached outside the upper and lower cafeteria flanges are connected by a connecting material between the end part and the disgusting I-shaped attachment, and each I-shaped ffit member The flange of the I was made with the reinforcing material;

(6) The method of melting or plating an I-shaped structural member according to any one of the above (1) to (5), wherein a stopper is vertically attached to one or both sides of the return web.

(7) The method of soldering with a lead, which is described in any one of the above items 1 to 6, wherein the attachment is a plate, a frame, a connecting bar, or an angle material or a mountain. .

(8) The method according to any one of (4) to (7) above, wherein the stopper material is an angle member or a mountain material.

(9) Attach the lift self-restraining 咅 and Ζ or anti-jamming material using the joint hole, the bracket previously attached to the I-shaped sound attachment, or the I-shaped vertical stiffener, the port hole drilled in the web or flange. (1) The method for melting and as-leading an I-type β member according to any one of (1) to (8).

(10) The upper and lower restraining members connecting the adjacent flanges of the I-shaped structure are connected by a reinforcing material.The I-shaped structure described in the above 2, 6, 7, 8 or 9 M lead plating method.

(11) An I 开 ^ ffit component melting SM plating method in which two or more methods selected from the above 1 to 5 are combined.

(1 2) When attaching a restraining member and Z or anti-flap material, insert a spacer between I and I-type: Lead plating method with f¾g sound.

(1 3) In the method of mounting an I-shaped screw with a flange at the upper and lower portions of the web, the ブ eb is turned to the β direction, and at least two unfavorable SI-shaped members are subjected to M. ί ί A method for plating I-shaped structural members, characterized in that both of the two are immersed in a molten metal plating bath while the two are connected by a restraining member to cause sub-dusting.

(14) Attach the anti-deformation stopper along the end of the web using the joint port hole provided at the recommended end of the web, and disturb through the stopper. 13. The method of forming a fffitg [¾r melted Siffi lead according to the above item 131, in which both ends of the I 开 ^ t member are knitted by self-restraint.

(15) A spacer is interposed between the web and the restraining member, or between the web and the anti-deformation stopper, to provide a gap between the restraining member or the detent prevention stopper and the web. 13. A melting method with an I-shaped structure according to 13 or 14 above.

(16) The welding method according to any one of (1) to (15) above, which is a light-weight girder for an I-shaped structural member. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a plan view showing a notch cross section of an I J ffig attached to an example of the present invention.

Figure 2: Left side view of Figure 1.

Figure 3: Drilling diagram of the embodiment with restraint according to the present invention.

FIG. 4: Side view corresponding to FIG. 2 in another aspect of the invention.

FIG. 5: Control diagram corresponding to FIG. 2 in another embodiment of the present invention.

FIG. 6: Side view corresponding to FIG. 2 in another embodiment of the present invention.

Fig. 7: Schematic view of the surface of another SH of the present invention.

FIG. ⁸ : Schematic diagram of the side ffi in another embodiment of the present invention.

FIG. ⁹ is a schematic side view of another embodiment of the present invention.

Fig. 10: Schematic view of a hood in another II of the present invention.

Fig. 11: View of spacer.

Fig. 12: Illustration of torsion measurement with I-type release.

Figure 13 _: 1 mm.

Fig. 14: 1S side view with I Mig sound attached with «Non-jam stopper.

Fig. 15: I-shape of another example of the present invention;

Figure 16: Right side view of Figure 15.

Fig. 17: Cross-sectional view taken along line BB in Fig. 16.

FIG. 18: Cross-sectional view corresponding to FIG. 17 in another U of the present invention. Explanation of reference numerals

1: Web 2: Flange 3: Restraint member

4: Stopper 5: Vertical stiffener 6: Port

7: Nop I washer-8: Port hole 9: Joint hole

10: Port 11: Connecting material 14: Supplementary

15: Connection bar Best mode for carrying out the invention

The lead plating method of I 开 ^ i 开 according to the present invention is a method of melting at least two I, which is not immersed in a molten bath and zinc plated, as in ». Attached to the I-shaped ffiii sound at a plurality of places including the I-direction (longitudinal method) of the I-shaped ffiii sound (both unless otherwise specified means both ends of the m-direction). The feature is that the melted MM bells are connected in the state of being connected.

The present invention performs the galvanized plating in such a manner that a plurality of I-gethers are connected by detention in a plurality of glands including the two, by using a continuous yarn §1 "with the restraint. Even if two adjacent I-Nada attachments are temporarily made into pseudo-units and each I-type attachment is subjected to thermal power in the melting process, This is to prevent the structural members from being deformed freely, that is, by strengthening the IJ sound attachment in this way, the I 开 «咅 attachment receives heat during the plating process. It is based on the fact that even if it is deformed, it is constrained to each other by the restraint and the deformation is remarkably suppressed.

In the present invention, the above-mentioned I-shaped structure requires a hot-dip lead plating for a P direction and a metal which can obtain required properties as various types of iii materials! It is usually made of $ 3 steel. A long basket with a generally I-shaped cross section that has flanges attached by welding or the like on the upper and lower parts of the web. «¾! Can be. Of course, it may be an I-shape attached to the use of rice girder ^.

In addition, the disgusting 31-type ffii members are large I-type attachments that cause distorted or twisting deformations, etc. in the melting process, and usually have a sound attachment length of 4 m or more. Effective for inventions. The thickness and dimensions of the I-shaped sound-added web and flange are mainly determined by the application. As a practical range, the web thickness is 5 to 20 mm and the height is 100 to 300. It has a thickness of about 100 mm, a flange thickness of about 100 to 50 mm, and a width of about 200 to 800 mm.

In the present invention, the number of I-shaped structural members connected to form a pseudo unitary structure is usually two, but is not limited thereto. However, when the number of I-shaped structures is increased, the apparent volume of the continuous yarn is more than twice as large as that of the single I-mesh, so a liquor bath for liquor is required. Not only that, but the overall mass is significantly increased, which increases the load on the λ and its transport to the plating bath, and reduces the workability of the solder plating.

Furthermore, in a preferred difficult form, even after a mess, without removing the S-restricted attachment from Ig ^ «g§ attachment, keep the I-shaped †« B sound attachment in a connected state, If the number of I 开 ^ ffit 咅 is 3 or more, there are many problems in these aspects as well.

Therefore, it is optimal to connect two I-shaped ffig members. In the following description, the number of I-shaped structural members is all two for convenience. The restraining member of the present invention must be capable of preventing or suppressing the deformation of the above-mentioned I-shaped structural member against thermal stress in the process of hot-dip plating. For this reason, they are usually made of steel with a large ¾Jt. Also, examples of the form with the constraint include a plate-like body, a frame body that is framed by truss or fiber, an angle material, a mountain, or a binding bar. Which type of detention is narrowed mainly depends on the connection method of the I-shaped members and the connected I-shaped ffii sound! »It is preferable in terms of installation workability.

In the present invention, self-locking is provided at a plurality of places including both ends of the I-shaped bracket. , The middle part of both ends ¾ ^ <<, connect as necessary I-type If the ffit member is so long, it is enough to connect both ends, but: fck I-type When the structure or staple dog specification has an I-shaped ffi sound that is easily deformed by thermal force, for example, the center of the I-shaped structural member is also connected with a constrained sound. The number of connections can be increased to two or more if necessary, in which case the restraint sound at both ends and the restraint at the middle part are different even if the same shape is used. May be used.

Further, in the present invention, for the purpose of suppressing the deformation of the web by entangling, it is possible to attach an S entrapment material to the web of the I-shaped member connected in accordance with the restrictions. The anti-jamming material is particularly suitable for I-shaped structural members in which the height and length dimensions of the web are large and the jaw deformation is likely to occur. In addition, it can be provided on either or both of the web and the middle part, but it is necessary to provide Suitable locations are the ends of the web and the middle of the web without vertical stiffeners.

As the material of the anti-seizing material, a steel angle material or a mountain ache with high rigidity, usually three bends, is suitable. These materials are cut to the specified dimensions and calendered to the embedding material.Then, using the joint holes of the web, the brackets attached to the web or the boring holes drilled in the web, the web can be cut vertically on one or both sides of the web. (Same direction as vertical stiffener).

In addition, the I-shaped fine member is restricted by a constraining member: ^ means that the two I-shaped structural members adjacent to each other with the web facing »are preferably 0.5 to 1.5 m, particularly 0.8 to 1 m. Om are arranged side by side, and in this state, the both ends of the web are connected by restraint attachment.Actually, the attachment method differs depending on the connecting position and the form of the restraint attachment, but most of the joint holes, Use the bracket attached to the I-type attachment in advance, or the vertical stiffener of the I-shaped member, the port hole drilled in the web or flange, and secure with the port. At one time, the joints at both ends are provided with joint holes as if they were selfish, so that both ends can be easily connected by engaging the joint holes.

In addition, when the web 15 is provided with an anti-slip material as an anti-slip deformation itm at the time of melting MM lead plating, it is recommended that the web be restrained via the anti-slip material to maintain it. It is good.

In the present invention, the melting MM condition and the condition of the type I β sound can be controlled in the same manner as in the suspension method. Therefore, these conditions are not described in detail, but as a general outline, the plating conditions are as follows: bath ^ S: 435 to 445 ° C, immersion in the valley MS: 10 to 3 Om / min, immersion angle: 1 5-2 5 degrees, withdrawal 1 ~: l OmZ, pulling angle from initial 5 degrees to final 30 degrees is preferred. Conditions Temperature: 60 to 80 ° C,: about 10 to 3 Om / min, Immersion angle: about 20 to 30 degrees, and pulling up and angle are arbitrarily selected.

Next, the main feature of the present invention will be specifically described with reference to the drawings. Fig. 1 is a plan view of two I instantaneous joints connected by a constrained sound attachment 3, Fig. 2 shows the left side view, and the cutaway section in Fig. 1 is the A--A part in Fig. 2. It is. In this example, two I-shaped fffig notes for rice girder are connected by the constraint shown in Fig. 3 (Appendix 3) .The two parallel I-types are connected at both ends and in the middle, It has a single structure. FIG. 1 shows only one restraining member 3 in the middle. In this example, each I-shaped structure before connection is connected to a joint hole 9 (see Fig. 13) for connecting the girder slightly in the field, as is commonly used. , I type with sound isolation It is provided on the web 1 and the flange 2 of the end joint. Further, as shown in FIG. 1, the web 1 is provided on both sides of the web 1 at intervals of 5 stiffeners. And, on both sides of the web 1 at both ends of the I-shaped member, the arrogant joint hole 9 is used for the IJ and a stopper 4 made of, for example, an angle material is firmly attached by a port 6. . Portions are provided in advance in the staple stopper 4 located on the inner side of the two I-shaped structural members indicated by ^ ij.

FIG. 3 shows constraint 3 in this example. The marketing bundle member 3 is formed from a square-shaped steel ribbon, and a polylet hole 8 for attachment is provided at both ends of the bracket 3. In this case, the height of the attachment 3 is substantially the same as the height of the web 1 of the continuous I-Rin construction member, or is equal to the height. Also, the width can be determined, but the width defines the distance between two consecutive I-shaped members. If the height of t * in Appendix 3 is too large,

The width of the material becomes large as necessary, which affects the size of the bathtub and the storage space after plating and the inside of the hall. On the other hand, if the width is too small, the attachment property of attachment 3 to the I-shaped sound attachment becomes poor, and the resistance when immersed in the plating bath increases, so that the immersion must be slowed down. There is. "If the immersion into the bath is small, the amount of torsion that occurs in I 开 ^ t 咅 increases. In consideration of these factors, the width of constraint 3 is usually about 50 to 150 cm. Appropriate.

The thickness in Appendix 3 is determined so that a bow girl that can withstand the stress generated during the welding process can be obtained. If this thickness force S is small, the required bow can not be obtained, so that the heat force of the lysed thigh lead plating d will cause the detention 3 to be formed, and the scissors, torsion, bending, etc., which will be generated in the I-dori structure Deformation cannot be sufficiently suppressed. However, since the deformation of the I-shaped ffit§15 «mainly balances the sound length, web thickness, flange thickness, etc., the thickness of the restraint member 3 is based on the design specifications of the I-shaped structural sound. It is practical to decide. In the case of a constrained sound attachment that connects an I-shaped ffit II attachment for β, its thickness is preferably 10 to 50 mm.

Next, a description will be given of a method of actually linking two I-Gangs under the constraint of Annex 3. First, the connection in the I-type structure (2) will be described. Two I-shaped bezels with anti-seize members 4 attached to the web 1 of the joint in advance are arranged side by side with the web 1 in the vertical direction at an interval equivalent to the width of the bezel 3. Next, the restraining member 3 is brought into contact with the inner stopper 4 (see FIG. 1), and the porter 10 makes it difficult for the stopper 4 and the stopper 3 of each I-Zone. In this case, the number of ports 10 may be selected according to the size of the boat, the size of the barb, the boat to which the boat is attached, etc. . On the other hand, the restraining member 3 in the middle part is provided with a port hole in the vertical stiffener 5 of the I-Linka member, and is fixed to the vertical stiffener 5 by the port 10 using the port hole. When five vertical stiffeners are provided on the web 1, for example, a bracket is attached to a position where the web 1 is to be connected, and a connection Mm3 is attached via the bracket. Thus, the two I-shaped structural members are connected to each other at the intermediate portion by the restraint. In addition, since the I-shaped member of the present example is provided with a straight stiffener 5, a force that does not provide the anti-flush material 4 at the intermediate portion of the I-shape is required. At this time, for example, a bracket is provided on the web 1 and the anti-jamming member 4 is mounted in the vertical direction. Note that the stopper 4 is substantially the same as that of the present embodiment in all the embodiments, and therefore, the description of the separating embodiment will be omitted.

When the sickle 3 is attached to the restraint 3 and the clinging material 4 is attached, the clinging material 4 adheres to the web 1 and the restraining member 3 closes to the vertical stiffener 5; The stiffeners 5 are covered with the detainees 3 and the anti-jamming material 4, respectively, so that they are not damaged. In order to prevent this, pipe washers 17 are inserted between the web 1 and the stopper 4 and between the vertical stiffener 5 and the stopper 4, respectively, as switches it ^. FIG. 11 shows an example of this pipe washer 17, which is provided with a semicircular hole 12 for zinc outflow preferably having a diameter of preferably 5 to 15 mm on all four ends of the pipe body. The pipe washer 7 may be temporarily attached to the anti-sling material 4 and the attachment 3 for better durability. The wearing of the shoes is the same in all the examples.

In addition, when connecting I-shaped sticks with vertical stiffeners or flat stiffeners attached to only one side of the web, arrange them so that the three stiffeners are unfavorable when IJ these I-shaped sticks. Is preferred. In addition, as an example of the form of the restraint member 3, a plate-like body is exemplified, but a truss, a frame body vertically and horizontally framed, and a composite panel can also be used.

FIG. 4 is a side view similar to FIG. 2 showing another example of the present invention. In this example, as shown in the figure, two flanges 2 attached to an I-shaped member S are connected by fixing them with a restraining member 3, thereby forming a pseudo-single unit ffit body. The locations connected by the restraint members 3 may be considered as in FIG. The connection of both ends is made by abutting the restraint 3 on the outside and inside (the ffi of the web 1) of the joint of the flange 2 respectively, and applying these restraint sounds 3 to the flange 2 using the joint holes. It is obtained by fixing at 0. As an attachment 3 that is fixed to the outside of the flange 2, the cross section turns into a U-shaped mountain However, bacteria can also be used for plate-like bodies and angle materials. Further, if the outside and inside of the flange 2 are closed by two restraining members 3 as shown in the example, a strong connection structure is obtained. However, the connection may be made only by the outside or inside of the flange 2.

The manner in which the restraining member attached to the intermediate portion of the I-shaped structural member is connected to the restraining member at the end is substantially the same. However, since there is no bolt hole for fixing the restraining member to the flange 2 in the middle part, a port hole is provided in the flange 2 and then fixed with the restraining member 3 by T. Further, although the same type of restraining member as the middle portion is used, the middle portion may have a different shape from the both ends.

FIGS. 5 and 6 show another embodiment in which two I-shaped ffiii members of FIG. In other words, Fig. 5 shows that both ends of the upper and lower restraint members 3 connecting the two 1 开 members outside the flange 2 and the middle part of the two It is a structure. Thereby, the link tffig by the 贿 member 3 can be further strengthened. For the workability, the connection material is welded to the attachment 3 in advance, for example, by welding to form a strong frame that surrounds the outside of the I Sig member, and then inserted and attached to the end of the 1 音 «^ sound attachment. It is preferable to attach Appendix 3 to flange 2 with Port 10.

Further, in FIG. 5, the frame between the connecting member 11 provided outside the I-shaped member and the harness binding member 11 provided between the two I 开 ^ ¾g sound attachments is made to correspond to the width of the flange 2. If the flange 2 is formed and both sides of the flange 2 can be sandwiched between the flanges 1 1, it is possible to fix the attachment 3 to the flange 2 simply by fitting an I-shaped member to the frame. However, it is possible to make two I-shaped sounds more difficult. In this case, if the width of the upper flange 2 is smaller than the lower flange 2 as shown in Fig. 5, either 例えば provide, for example, a convex portion on the binder 11 or rigidity between the flange 2 and the connector 11 Fig. 6 shows two I port constructions by fixing the restraint 3 to the I-type release member with Port 10 inside the flange 2 This is an application example of the case. By connecting the two I-shaped structural members with the upper and lower restraints 3 made of angle material, for example, and connecting them with the reinforcing bar 14 It is to get a continuous thread g it.

FIGS. 7 to 9 are schematic views showing another example of the pot invention. In each of the figures, reference numeral 10 denotes a port for fixing the constraint attachment 3 to an I-shaped Si sound attachment. It is Jutsu's opinion that these fls also form a series of I fu g¾ sound attachments in Detention 3, which also formed the frame of a rectangular dog. Each frame is made of steel, such as Andal and Yamanori, by welding and is made of various materials depending on the combination of steel. It is possible to obtain the restraining member 3 in the form. That is, the restraining member 3 in FIG. 7 is the simplest rectangular frame (a dog frame), FIG. 8 is a frame obtained by combining vertical and horizontal steel materials with the rectangular dog frame, and FIG. It is a truss-like frame made of steel materials, though not shown, it is necessary to provide a spacer between the restraining member 3 and the I-shaped structure, and if necessary, an anti-flap material The provision of 4 is the same as that of the embodiment with tfi¾.

In order to connect the two adjacent I-shaped IS! Members in Appendix 3 of such a frame, the frame is sandwiched from both sides by the I-shaped structural member, and in this state, each I-shaped Κί is tightened and fixed to the restraint member 3 with bolts 10. In this case, it is preferable to fix the web 1 and the flange 2 of the I-shaped structure to the restraint 3 as shown in the example, since a solid union can be obtained. However, it is also possible to restrict only Web 1 or Flange 2 to Restriction 3 as disliked.

FIG. 10 shows a still further embodiment of the present invention, in which two adjacent I-shaped ffi members are fixed with a connecting bar 15 to connect them. It connects and reinforces one upper flange 2 and the other lower flange 2 of the disgusting Irnmt facing each other at in—16. However, there is a considerable effect from the connection 15 alone.

FIG. 15—FIG. 17 shows one of the most preferred examples of the present invention, and FIG. 15 shows a case where both ends of two I-shaped stiffeners are connected by the fastening members 3. It is a top view. FIG. 16 is a right side view of FIG. 15, and FIG. 17 is a cross-sectional view taken along the line BB of FIG. The left end of I Jliig in Figure 15 is exactly the same as in Figure 5.

Each I-shaped structure of the chain has a joint porthole (see Fig. 13) on both sides of the web 1 in order to repeat the girder slightly in the field. And, on the joint portion of the web 1, the stopper 4 made of Yamazaki steel is firmly attached to both sides of the web 1 in advance by a port 7 beforehand; ^ preferable. Since the web 4 can also prevent the web from being deformed by the web 4, the force S provided on both sides of the web 1 as in the example of the web is preferable. In addition, of the disgusting antifouling materials 4 attached to both sides of the web 1, the antifouling material on the side that fixes the restraint 3 is located inside the two inverted I-shaped ffii. Port holes for attaching restraint Appendix 3 are provided in the entrapment material.

Also, when the stopper 4 is in close contact with the web 1, this portion of the web is covered with the stopper 4 and no lead plating is caused, so that the stopper is separated from the web and the entire surface of the web as much as possible. In this example, a pipe washer 7 is inserted as a spacer between the web 1 and the anti-slip material 4 so as to melt the S lead. Figure 11 shows this pipe mesh. This is an example of the yarn 7, and is provided with a semicircular hole for zinc outflow having a diameter of preferably 5 to 15 mm at the four corners of the pipe body. In addition, this pipe washer 7 is temporarily attached to the stopper 4 (it may be welded by welding).

In this example, the material shown in Fig. 3 can be used as the listening material 3 in Wei. Normally, restraint 3 is formed from steel squares (which may be hollowed out in the shape of a customer tool), and both restraints 3 (5 The bolt hole 8 is provided with a force S corresponding to the position of the bolt hole of the disgusting antifouling member 4. Here, similar to the height of the web 1 of the I-shaped screw member at the height of the attachment 3 It is the same, and the width can be determined, but this width defines the distance between the two I-line members to be connected.If the width of this restraint is too large, the I-shaped f Unnecessarily large width of the bath leads to the effect of the size of the bath and the storage space after the plating, the floor curtain, etc. On the other hand, if the length of the bath is too small, the detention will be added to the iS member. The workability at the time of mounting deteriorates, and the resistance when immersing in the plating bath increases. If the MS is small, the amount of torsion that occurs in the structure will increase.In consideration of these factors, the width of the constraint 133 It is about 50-150 cm.

The thickness of the restraining member 3 is determined so that the boat can be humiliated against the stress generated in the solder plating process. With the thickness of J, the required bow can not be obtained, so the restraint sound is formed by the influx of the lead plating process. Cannot be suppressed sufficiently. However, since the deformation of I 咅 mainly depends on the sound length, web thickness and flange thickness, it is practical to determine the thickness of the restraint member 3 based on the design specifications of the I-shaped sound. is there. In the case of a restraining member connecting an I-shaped ffii attachment for β, its thickness is preferably 10 to 50 mm.

Next, a method of actually connecting the two I-shaped screws in the constraint 3 will be described. First, two I 开 ffit members, each of which is provided with a stopper 4, are arranged side by side at a joint corresponding to the width of the restraining member 3 with the web in the vertical direction. Next, the restraining member 3 is brought into contact with the inside of the stopper 4 (the upper part of the stopper 4 in FIG. 17), and the stopper 4 of each I 开 ^ t 咅 and the stopper 3 are connected to the port 10. By «. The number of ports to be used may be selected according to the size of the member, the size of the boat to which the person is attached, etc., but it is desirable that the number of ports be fixed at the upper and lower portions and at the center of the member. If a strong restraint is attached to both sides of the I-Sig I, the two I-shaped structures can be connected with a restraint sound 3 as shown in Figure 15. When combining I-shaped structural members with vertical stiffeners or flat stiffeners attached to only one side of the web, when these I-shaped stiffeners are arranged side by side, It is preferable to arrange them so that they are sized. Also, in this example, if the direction of attachment of the flap stopper 4 attached to the inner side of the flap stopper 4 to the web 1 is changed, the restraint 4 is attached to the outer side of the flap stopper 4. Can be attached to

FIG. 18 shows another embodiment of the present invention. In this example, as is apparent from the figure, both of the I-type sound-absorbing members are connected to each other by the constraint member ST3 without the interposition of the above-described interlocking member 4. The binding 3 in this example is a thick plate having a U-shaped cross section with ribs 17 formed on both sides, and uses a port hole provided in the rib 15 and a port hole in a joint portion of the web 1. Thus, the mi 3 is configured to be directly attached to the web 1 by the port 6. In the figure, reference numeral 18 denotes a nut stopper plate.

Furthermore, the present invention is not limited to the plank of the dog in FIG. 17 and the drawing II in FIG. 18. Although not shown, even if a required bow is secured, for example, a frame-shaped It is possible to narrow things or composite panels. In addition, by simply connecting the opposite ends 15 of the I-ring member with an engagement, a force that can substantially achieve the intended purpose If necessary, for example, the flanges of both parts of the I-shaped i-t member are fixed by other means. Is also good.

Further, in the present invention, when the two I-joints are connected to obtain a simple structure, the I-shaped unit and the middle part are usually connected to the same mountain or link. Is used. However, the present invention can combine different types of continuous weaving or connecting methods, as if they were self-contained. For example, both sides may be made as shown in FIG. 2 and the middle part may be made as shown in FIG. The connection shown in FIGS. 2 and 4 may be used in combination. I-shaped figf for bridges with a flange thickness of 20 mm, web height of 240 mm, web thickness of 12 mm, and length of 10.4 m, 8 vertical in the middle The stiffeners were made at regular intervals from steel. Then, each of the two I 咅 ^ i 漣 attachments was tied together with a constraint attachment, and the samples of Examples 1 to 6 in Table 1 were prepared by the following method. Examples 1 and 2 are the methods shown in Figs. 1 and 2 (only the web is connected with restraint 咅), Examples 3 and 4 are the methods shown in Figure 4 (only the flange is connected), and Examples 5 and 6 are the figures By using method 9 (connecting the flange and the web with the frame), both ends are connected to each other. For the method of visiting a part of the continuous yarn, a product was prepared in which the middle part was assumed to be a ream. As for the connection of the intermediate part, all the parts in the I-shaped structural member: ^ i were attached with ί ^ 咅. In addition, the anti-separation material was attached only to all samples.

On the other hand, in order to compare the method of the present invention with the method, as Example 7, exactly the same I-shaped sound as the I-fitted member of Return 3! A sample was prepared.

For each of these seven types of I 开 ^, the r conditions are: 440. C, immersion ¾¾¾: 20 m / min, immersion angle: 15 degrees, withdrawal ¾g _: 1-1 OmZ, and irai conditions (water temperature: 65 ° C, immersion «¾: 30 mZ, immersion angle) : Welding in accordance with 20®, hurt the “twist” of each plate and the “swarping deformation (flatness of the web)” of each plate in the β-lead plate. The amount of d shown in Fig. 2 was measured at both ends, and the amount of twist in the larger direction was described.The flatness of ゥ was measured by measuring the amount of irregularity in each zone tfc¾0 with a vertical stiffener, Table 2 shows the results of these measurements.

Table 2

As is evident from Table 2, the I-shape twist and the flatness of the web of Examples 1 to 6 where at least the two sides were connected were the same as those of Example 7 in which only the webbing 15 was fitted with a non-slipper. In all cases, the values are significantly reduced, and it is clear that the twisting of the web and the web deformation are suppressed. In addition, Examples 1, 3, and 5 in which the central part of the Irinzo structure was connected had improved torsion and flatness of the web compared to Examples 2, 4, and 6 in which only both ends were connected. In particular, the effect of preventing torsion has been improved.

Example 2

Flange thickness is 2 Omm, web height is 240 Omm, web thickness is 12 mm, web length is shown in Table 3 below, 6.7 ~: 11.7m for β I The shape ffi ^ 咅 was made using steel. Then, as shown in Table 3, each of the two I-joints was 20 mm or 30 mm in width and 80 cm in width, as shown in Table 3. We made four sets of ® 端 with the ends tied together with a restraining sound. For each of these Type I Sig II, the molten lead was plated according to the ordinary method. The relationship between sound length and torsion was measured after solder plating. Table 3 shows the results. In addition, although the twisting occurs in the direction of the web in the above attachment after plating, Table 3 shows the amount of twisting on one side of the web where the cracking occurred, as seen in d in Fig. ¹² . It was determined by measuring.

As is evident from Table 3, the amount of torsion can be suppressed to 100 mm *, which is within the practical allowable range, regardless of whether the thickness of the restraint sound is 20 mm or the thickness of the restraint sound is 30 mm. all right. In addition, it was found that when the restraint thickness was 30 mm, the amount of twist could still be suppressed even when the sound length was extremely large, 1 lm or more.

Further, in the case of the present invention, in addition to the amount of torsion, it was found that the tangled deformation of the sound (the flatness of the web can be suppressed to a small range. Table 3 As described above, the twist S was a force S of 42 mm, and the flat β of the web in that case was H / 400 (Η is the height of その EB). In addition, the flat ffiit of the web is obtained by dividing the height of the web by the length of * λ to the ゥ F side as viewed from the;! ^ Direction, and calculating this as Η / Χ. 15 Web 15; ¾λ interleaving length is 6 mm.

On the other hand, in order to compare the method of the present invention with the narrow method, a 8.8-m-long I-Linka-made member was melted under the same conditions as in the conventional method using only the squeezing material shown in Fig. 14. After zinc plating and after plating, the amount of twist and the flatness of the web were measured. The amount of twist was 130 mm and the flatness of the web was HZ229. From this, it can be seen that the method of the present invention can significantly reduce the deformation in the hot-dip plating process as compared with the method.

Bell column 3

The length of the flange of the fs member was changed by changing the thickness of the flange. so,

The S lead was melted with the two pieces connected. After plating, the relationship between the ratio of web thickness to flange thickness and torsion was investigated. The results are shown in Table 4. The method of measuring the amount of twist is the same as in Example 2.

Table 4

Flange thickness Web thickness / twist amount (mm)

Restraint thickness

(mm) Flange thickness ① ② ③ ④

20 mm 16 1: 1.33 18 22 19 1 5

18 1: 1.50 25 29 1 18

20 1: 1.67 42 12 24 35

22 1: 1.83 43 36 40 38

25 1: 2.08 48 42 39 50

27 1: 2.25 53 49 41 46

30 mm 31 1: 2.58 4 1 38 36 30

35 1: 2.92 52 64 28 36

40 1: 3.33 62 58 43 47 Table 4 shows that the amount of torsion can be controlled to a maximum of 10 Omrr * within the practically acceptable range for both the restraint member with a 20 mm and the restraint with a j¾J? Of 30 mm. Also, the ratio of the web thickness to the flange thickness has a close relationship with the amount of torsion. As the flange thickness increases, the amount of torsion increases. It was found that the torsion control effect was larger than that of the restraint member. Availability on Zhao

According to the present invention, as described above, a plurality of locations including at least two I-shaped attachments to be galvanized are firmly connected to each other with a restraint to form a pseudo-single body, In this state, molten M lead is applied.Even if each I-shaped structural member tries to deform by receiving the heat force in the molten zinc plating process, the deformation is suppressed due to the unpleasant single medullary body, and it is entangled and twisted. Such deformation can be significantly prevented or reduced. In particular, the conventional method is achieved by connecting the ¾¾ of the I-Lin-Zu-Yon, which is required to prevent these deformations more strongly than other parts, as the force joint part as soon as these deformations occur most immediately. It is possible to reduce the unfavorable 3 deformations that are not possible with T to within the allowable range. In addition, by connecting the middle part of the long I-shape, the 才 Nobugami deformation can be further suppressed.

In addition, when joining the two types of I-type grace due to detention, by making the joint hole in the joint part simple and strong, it is possible to perform the joint easily and firmly. By attaching the retaining material that has been attached and connecting it through the retaining material, it is not only easy to connect, but also the deformation is prevented by using the retaining material. Is also preferred because it is also added.

Further, according to the present invention, the melting! Even after the lead plating, the tethers are not removed until they are erected, so that the I-shaped structure can be melted by itself. Can be obtained.

In other words, in the present invention, the twist of the f-shaped fitting is extremely small, and at least two of the I-shaped fitting forces are connected to each other by the tethers at intervals of eagerness. It can be stored in an upright stable state and can be used for gi &, etc ..

Table 5 summarizes and summarizes the advantages of the JiW loading and other methods for preventing deformation in the hot-dip galvanizing process of the present invention. 5 Advantages of the present invention Advantages over conventional methods Improve transport efficiency by upright transport Improve sideways transport

Reduction of storage space by upright storage Improvement of sideways storage

Simple handling of handling operation by upright storage Less work compared to overturning storage that requires ups and downs

No need for block assembling (ground assembling), no need for single girder block temporary space-no need for installation

No need to assemble while correcting torsion.

No secondary stress due to torsion correction during erection, fatigue strength is improved compared to conventional methods, and reliability in strength is increased

Claims

The scope of the claims

1. In the method of zinc plating on the flanges at the top and bottom of the web, a plurality of touches are arranged in parallel with the web facing «and the adjacent I-shaped« With the 咅 attached to the plurality of βs including both ends in the t¾ direction of the 嵌嵌で attached with the restraining member, immerse it in a molten a® lead plating bath and « I-type melting method with sound.

2. In the method of mounting the flanges on the upper and lower parts of the web, the method of fixing the I-shaped parts is as follows. In a plurality of places including both ends, the outer side of the flange attached to the I-shaped structure and / or the web side are connected with each other by a member, and the flange is immersed in a molten metal bath to perform sub-metal plating. The lead plating method attached to the I-shaped structure.

3. In the method of mounting I-shaped ffii members with flanges on the upper and lower parts of the web, a plurality of muscular boats are cut in the direction of β, and one adjacent boat The web and the flange of the I-type i¾i 咅 are immersed in a molten USE lead plating bath and are zinc-plated in a state of being bound at a plurality of places including both ends in the »direction. The method of melting KM lead plating attached to I-drama ffit 咅.

4. In a method of zinc plating an I-shaped attachment having flanges at upper and lower portions of the web, a plurality of the I-shaped attachments are arranged in parallel with the web in a vertical direction, and the adjacent I-shaped webs are attached to the I-shaped attachment. At a plurality of locations including both sides of the ffit 咅, tie it with a restraining member, and immerse it in a hot-dip plating bath with the squeezing stopper vertically attached to the web. I-type MM lead plating method with glue bedding.

5. In the method of fitting the I-shaped ffit with the flange at the top and bottom of the web,

In a plurality of sections including both ends, a pair of bindings arranged outside the upper and lower disgusting flanges are connected by a connecting material between the end and the café I. I-shape flange attached with high-strength material; 1 dog S, immersed in a bath of melting 1 »-mech bath, and said to be sub-meshed. Method. ■

6. The method according to claim 1, wherein the web is provided with an anti-jamming material on one or both sides thereof in a vertical direction.

7. The method according to any one of claims 1 to 6, wherein the attachment is made of a plate, a frame, a bar, an angled skirt, or a mountain.

8. The method according to any one of claims 4 to 7, wherein the stagnation material is an angle material or an angle iron.

9. Attach the disgusting restraining member and / or anti-jamming material using the joint hole, the bracket previously attached to the I-shaped structural member, or the port hole drilled in the vertical stiffener, web or flange of the I-shaped structural member. Claims: The method for plating molten MS lead attached to I 开 «¾ according to any one of! To 8.

10. The method of claim 2, 6, 7, 8, or 9, wherein the upper and lower restraining members connecting adjacent flanges with the I-shaped structure are connected by a reinforcing material. Hot-dip zinc plating method.

1 1. A molten lead plating method attached to an I-shaped screw St, wherein the number of pastes is a combination of two or more methods selected from claims 1 to 5.

1 2. The I-shape according to any one of claims 1 to 11, wherein a spacer is interposed between the restraint および and the Z or the Z ^ to which the anti-jamming material is attached. Melting method attached to net.

1 3. In the method of zinc plating an I¾t member with a flange at the upper and lower parts of the web, turn at least two bad SI SIS にして with the ゥ b facing and attach the I-shaped ffit 咅 » The 方法 ffi 形 ffi ffi とする方法方法方法 I。方法方法方法方法。。。。。。。。。。。。。。.

1 4. Attach the anti-deformation stopper along the end of the web using the port hole at the joint located in the direction of the web, and use the port stopper to cut through the stopper. The method of claim 1, wherein both ends of the ffit sound are connected in a | ¾) bundle.

1 5. With a spacer interposed between the web and the restraining member, or between the web and the deformation-preventing anti-flanging material, the The molten MM lead plating method for an I-shaped structural member according to claim 1 or 2, wherein a gap is provided in the MM lead.

1 6. The method of welding and shaping an I-shaped i®i member according to any one of claims 1 to 5, wherein the fufB I-shaped ffii is a beta girder.