JP2001511492A - Structural member with a metal shell reinforced by a reinforcing plate - Google Patents

Abstract

(57) Abstract: A structural member is an elongated hollow case including two or more thin metal shells, and flanges are provided at both ends of the shell so as to extend over the entire length thereof. It has a hollow case, which forms a hollow case, at least one reinforced end member engaging a distal end of the case, and a filler packed in the case. The stiffener plate is attached to the inside surface of the thin metal shell using an adhesive such as an epoxy resin to increase the tensile strength of the structural member. Further, the reinforcing plate is provided with at least one opening and a suitable number of uprights formed on the sides of the opening. The adhesive contained in the opening serves as an additional means for increasing the tensile strength of the structural member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001] TECHNICAL FIELD OF THE INVENTION The present invention relates to a structural member which includes an elongated hollow thin metal shell filler is packed, in particular, attached to a thin inner wall of the metal shell elongated hollow The present invention relates to a novel structural member whose tensile strength is increased by a reinforcing plate.

2. Description of Background Art In general, posts, pillars, posts, poles, structures for the members such as beams or the like, that structural member, the wood depending on the application, concrete, metal or a composite material thereof, Made.

[0003] Specifically, structural members made of concrete have been widely used in the construction field due to their compressive strength and economy. Another advantage is that various shapes can be easily formed by designing molds of various shapes. But,
Concrete pillars and posts have rough surfaces and their appearance is not aesthetic,
Usually not suitable for decorative uses. Therefore, in order to use the concrete member in an application requiring an aesthetic surface, a separate finishing element made of wood and / or metal plate is required to change the rough surface of the concrete member into an aesthetically pleasing one.

[0004] Therefore, in various structural members such as columns, connecting rods, decorative poles, etc., for example, aluminum, aluminum alloy, stainless steel, etc., for aesthetic reasons and their high corrosion resistance and workability. Metal hollow structural members made of steel, zinc-plated steel, special steel, copper, or copper alloy are often used. Such a hollow metal member needs to be relatively thick in order to withstand the applied load, which increases material costs and manufacturing costs.

Therefore, in such a metal hollow structural member, in order to increase the bending strength and the moment of inertia of the metal structural member, the structural member has a bent cross-sectional shape or a cross-sectional shape provided with an inward groove. Efforts have been made to reduce the thickness. However, the manufacturing cost of such a metal member is still relatively high due to an additional manufacturing step for forming the metal member into a specific shape. Furthermore, if the thickness of the metal member is reduced to reduce the cost, the structural member becomes vulnerable to an external impact, which may backfire efforts to reduce the cost.

For this reason, various structural members have been developed with the specific purpose of increasing their tensile and compressive strength.

[0007] US Patent Nos. 5,263,297 and 5,45, issued to the assignee of the present invention.
No. 7,929, a structural member adapted for use with a base portion, comprising: an elongated hollow thin metal shell; and a reinforced end member with a through hole engaging the distal end of the shell. There is disclosed a structural member having the hollow thin metal shell and a filler filled in a through hole of the reinforcing end member. The reinforced ends disclosed in the above patents, so that both ends of the shell do not deform when pouring concrete mortar into the shell, nor do both ends of the structural member break or be damaged during transportation or assembly thereof. The member may be embedded in a concrete filler.

One of the major drawbacks of these conventional structural members is that they can basically support only small to moderate loads. That is, when it is necessary to support a large load, specifically, a large tensile load such as used in a railing of a bridge, a building or a building, these structural members cannot be used.

Accordingly SUMMARY OF THE INVENTION The main object of the present invention is to provide a large tensile load that can also be supported and equipped with a thin metal shell structural member.

[0010] The above and other objects of the present invention are a structural member, an elongated hollow case provided with at least two thin metal shells, wherein both sides of the metal shell have a total length. A flange formed by bending inward over the hollow shell to form an elongated hollow case with the flanges facing each other; a reinforcing plate attached to an inner surface of each of the metal shells; This is achieved by providing a structural member characterized by having a filler packed in a hollow case.

[0011] (Embodiment of the Invention) Figure 1 shows a structural member 100 in accordance with a preferred embodiment of the present invention. As shown, the structural member 100 is attached to an elongated hollow case 110 having a pair of thin shells 112, a pair of reinforcing end members 120 inserted at both ends of the case 110, and an inner wall of each of the elongated shells. It has a pair of reinforcing plates 130. The case 110 is filled with a filler such as a concrete mortar (see FIG. 2).

In this structural member according to an embodiment of the present invention, the thin shell 112 may be made of a metal such as, for example, stainless steel, aluminum, copper, or alloys thereof. On both sides of the metal shell 112, flanges 114 formed by bending inward over the entire length thereof are provided.
Can be formed to form the hollow case 110. By making the flanges face each other in forming the case, a rib is formed on the case over its entire length, and the rib increases the contact area between the filler 140 and the case 110. This rib functions as an anchor to the filler 140.

The reinforcing end member 120 has a through hole 122 through which the filler 140 is injected into the case 110, and the reinforcing end member 120 formed around the upper portion thereof is too deeply inserted into the case 110. The ribs of the case 110 formed on the two opposite sides of the reinforcing end member can be slid along with the step 124 for preventing the stiffening end member, and the reinforcing end member 120 can be more firmly engaged with the case 110. And a pair of slit portions 126 for enabling the formation.

The reinforcing plate 130 may be a metal, a layer of a fiber material selected from the group consisting of carbon fiber, aramid fiber, and glass fiber, or a combination thereof (ie, a layer of metal and a fiber layer). Combination). The reinforcing plate 130 is
Attached to the inner wall of metal shell 112, either by an adhesive such as an epoxy resin, soldering, or spot welding, to increase the tensile strength of structural member 100. Further, in order to increase the contact area between the reinforcing plate 130 and the filler 140, the reinforcing plate 130 is provided with a pair of upright portions 132 formed by bending both sides inward over the entire length thereof. Is also good. The upright portion 132 is provided with a filler 140.
Acts as an anchor to

When a load W is applied to the structural member of the present invention as shown in FIG. 2, the structural member has three types of stresses, namely, a compressive stress on the upper portion of the structural member represented by an arrow A and an arrow B And a shear stress on its side represented by arrow C. The strength of a structural member is related to its ability to withstand the stresses applied to it, that is, its ability to absorb or reduce stress.

As shown in FIG. 3A, the reinforcing plate 130 attached to the inner wall of the case 110 absorbs or reduces the tensile stress applied to the structural member. As shown in FIG. 3B, the upright portions 132 provided on both sides of the reinforcing plate 130 over their entire length function as an anchoring means (fixing means) to the additional filler, thereby increasing the tensile strength of the structural member 100. And increase the shear strength.

The reinforcing plate 130 of FIG. 3B provided with uprights 132 on both sides over its entire length
3C to 3E, the reinforcing plate 130 has at least one opening 131 and an appropriate number of uprights 133 formed on one side around the opening 131 of the reinforcing plate 130. Can also be provided.

As shown best in FIG. 4, the reinforcing plate 130 having the opening 131 and the upright portion 133 is attached to the metal shell 11 by an adhesive 138 such as an epoxy resin.
At the time of attachment to 2, the adhesive 138 is put into the opening 131, and the adhesive in the opening 131 functions as an additional means of absorbing tensile stress and shear stress. The number and position of the openings 131 and the uprights 133 are determined based on the desired tensile strength.

Further, as shown in FIG. 5, the reinforcing plate 130 may only have a plurality of openings 134 having a certain specific shape, and in this case, the adhesive in the openings 134 may have a tensile stress. , Thereby increasing the tensile strength of the structural member 100.

Referring now to FIGS. 6 and 7, there is shown a structural member to which other components can be connected according to a second preferred embodiment of the present invention. As shown in FIG.
A reinforcement having two or more thin metal shells 212 each having an opening 216 and an opening 234 attached to the inner surface of each metal shell 212 and corresponding to each opening 216 of the thin metal shell 212. And a plate 230. Other structural members (not shown) may be provided by suitable coupling means 25 used through openings 216 and 234.
0 allows coupling to the structural member 200 of the present invention. Metal shell 21
Flanges 214 formed by bending inward over the entire length are also provided on both sides of the 2. By making the flanges 214 face each other, a hollow case can be formed.

The coupling means 250 includes, for example, a threaded bolt 252 having a threaded hole 253, a nut screwed to the threaded bolt 252, and a screw used for coupling a structural member and other parts. And a bolt 254 screwed into the hole 253. The distal end of the threaded bolt projecting inward from the stiffener plate may also serve as an anchor to the filler 140.

8 and 9, instead of the nut 256 as shown in FIGS. 6 and 7, the coupling member 258 has a screw hole 259 configured to fix the threaded bolt 252. A structural member with another coupling means is shown.

On the other hand, FIGS. 10 and 11 show another reinforcing terminal member similar to the reinforcing terminal member of FIG. As shown in the figure, the reinforcing end member 220 has not only the through hole 122, the step portion 124, and the slit portion 126 of the reinforcing end member 120 as shown in FIG. , Two pairs of parallel ribs 224, a pair of insertion holes 226 provided at the ends of each rib 224, and the connecting member 1.
70. The connecting member 170 has a cylindrical portion 172 inserted into the insertion hole 226 at one end, and a stopper portion 174 at the opposite end to prevent the connecting member 170 from completely sinking into the insertion hole 226. Each of the cylindrical portion 172 and the stopper portion 174 has a screw hole 176. The cylindrical bolt 262 is shown in FIG.
As shown in FIG. 3, it is screwed to the stopper portion 174 and serves as an anchor to the filler 140. The bolt 260 is screwed to the cylindrical portion 172 through a bracket (not shown) attached to a base portion (not shown) as shown in FIG.
When filling 40, the screw hole 176 is not closed. After filling the filler 140 and removing the bolts 260, the threaded holes 176 can be used to connect the structural member and other components by appropriate connecting means.

Next, FIGS. 14 and 15 show another embodiment of the reinforcing end member of the present invention.
The reinforcing end member 320 shown in FIG. 14 is similar to that of FIG. 1 except that a pair of screw holes 326 are provided integrally on the side wall of the reinforcing end member 120 of FIG. Is different. 10 and 11 are screwed into the screw holes 326.

The reinforcing end member 420 shown in FIG. 15 is a combination of the same components as those shown in FIGS. 10 and 11 and the same components as those shown in FIG. The point is that a pair of screw holes 326 is used instead of the pair of insertion holes 226 into which the connecting member 170 is inserted.

FIG. 16 shows a structural member according to a third embodiment of the present invention. As shown, the structural member 300 includes a circular elongated hollow case 400 having three circular thin metal shells 430 and an adhesive such as an epoxy resin, soldering, and spot welding. It has a circular stiffening plate 410 used to attach to the inner surface of each metal shell 430 and a pair of circular stiffening end members 440 that engage the ends of the case. On both sides of the metal shell 430, flanges 420 formed by bending inward over the entire length thereof are provided, and the hollow case 400 can be formed by facing the flanges 420. The circular reinforcing end member 440 includes three slit portions 442 so that the flanges 420 formed by bending each of the metal shells 430 facing each other can slide along the end portions.

In the above embodiment, the shape of the structural member of the present invention is rectangular or circular. However, the shape is not limited to this, and may have various shapes such as a pentagon and a hexagon.

Although the present invention has been described with reference to preferred embodiments, workers skilled in the art will recognize that various modifications can be made to the embodiments of the present invention without departing from the true scope of the invention, which is set forth in the following claims. Will be understood.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a structural member provided with a reinforcing plate according to a preferred embodiment of the present invention. However, concrete fillers are excluded for clarity.

FIG. 2 is a perspective view for explaining stress applied to a structural member of FIG. 1;

FIG. 3A is a perspective view showing an example of a form of a reinforcing plate and showing directions of applied stress.

FIG. 3B is a perspective view showing an example of a form of a reinforcing plate and showing directions of applied stress.

FIG. 3C is a perspective view showing an example of a form of a reinforcing plate and showing directions of applied stress.

FIG. 3D is a perspective view showing an example of a form of a reinforcing plate and showing directions of applied stress.

FIG. 3E is a perspective view showing an example of a form of a reinforcing plate and showing directions of applied stress.

FIG. 4 is a sectional view taken along line II of FIG. 3D.

FIG. 5 is a perspective view of a reinforcing plate having only an opening.

FIG. 6 is an exploded perspective view of a structural member including a connecting means of a reinforcing plate and a thin metal shell according to a second preferred embodiment of the present invention; However, concrete fillers are excluded for clarity.

FIG. 7 is a sectional view showing how to assemble the structural member shown in FIG. 6;

8 is an exploded perspective view of a structural member as in FIG. 6 with a coupling means slightly different from that shown in FIG. 6;

9 is a sectional view showing how to assemble the structural member shown in FIG.

FIG. 10 is an exploded perspective view of another form of the reinforcing end member of FIG. 1;

FIG. 11 is a sectional view showing details of the structural member of FIG. 10;

FIG. 12 is a partially cutaway perspective view of a structural member in which concrete is packed in the hollow shell of FIG. 10 using the structural member of FIG. 10;

FIG. 13 is a sectional view taken along line II-II in FIG.

FIG. 14 is an exploded perspective view showing another embodiment of the reinforcing end member of FIG. 1;

FIG. 15 is an exploded perspective view showing still another embodiment of the reinforcing end member of FIG. 1;

FIG. 16 is an exploded perspective view of a circular structural member having a circular reinforcing plate according to a third embodiment of the present invention; However, concrete fillers are excluded for clarity.

Claims (16)

[Claims] 1. A structural member, comprising: an elongated hollow case having at least two thin metal shells, on both sides of said metal shell a flange inwardly bent over its entire length. Provided, the flanges are opposed to each other to form an elongated hollow case, the hollow case, a reinforcing plate attached to each inner surface of the metal shell, and a filler packed in the hollow case. A structural member comprising: 2. The reinforcing plate according to claim 1, wherein the reinforcing plate is a metal, a layer of a fiber material selected from the group consisting of carbon fiber, aramid fiber and glass fiber, or a combination of a metal and a fiber layer. The structural member according to claim 1, wherein the structural member is made of: 3. The method of claim 2, wherein the reinforcing plate is attached to each inner wall of the metallic shell using any of an adhesive such as an epoxy resin, soldering, or spot welding. 2. The structural member according to 1. 4. The structural member according to claim 1, wherein the reinforcing plate is provided with a pair of upright portions formed by bending both side portions inward over the entire length thereof. 5. The reinforcing plate according to claim 1, wherein the reinforcing plate has at least one opening and an appropriate number of uprights formed on one side around the opening.
The structural member according to claim 1. 6. The structural member according to claim 1, wherein the reinforcing plate has at least one opening. 7. The step of attaching the reinforcing plate to the inner surface of the metal shell, wherein an adhesive is put into the opening of the reinforcing plate.
Or the structural member according to 6. 8. A structural member, comprising: an elongated hollow case having at least two thin metal shells, each of said metal shells having at least one opening, and opposite sides of said metal shell. Is provided with a flange bent inward over its entire length, said flanges being opposed to each other to form an elongated hollow case, said hollow case being attached to each inner surface of said metal shell. A reinforcing plate having at least one opening corresponding to each opening of the metal shell; coupling means for coupling another component and the reinforcing plate through the opening of the hollow case; A structural member having a packed filler. 9. The method according to claim 8, wherein the coupling means includes a threaded bolt fastened through the opening of the hollow case and the reinforcing plate, and a nut screwed to the threaded bolt. The structural member as described. 10. The coupling means includes a threaded bolt fastened through the opening of the metal shell and the reinforcing plate, and a coupling member having a threaded hole screwed into the threaded bolt. The structural member according to claim 8, characterized in that: 11. The method according to claim 9, wherein the coupling unit includes a screw hole formed in the threaded bolt, and a bolt screwed into the threaded hole of the threaded bolt. Structural members. 12. At least one stiffening end member for engaging a distal portion of the hollow case, the through hole filling the hollow case with the filler, and formed on two opposite sides thereof. The structural member according to claim 1, further comprising the reinforcing end member, wherein the opposed flanges have a pair of slit portions that can slide along the flanges. 13. Each of the reinforcing end members includes at least a pair of parallel ribs extending inward along each of the slits, a pair of insertion holes provided at ends of the ribs, A connection member having a cylindrical portion inserted into the insertion hole at one end and a stopper portion at an opposite end, wherein a screw hole is provided in the cylindrical portion and the stopper portion. 13. The structural member according to claim 12, further comprising a member, wherein an anchor member is screwed into the stopper portion to serve as an anchor to the filler. 14. The reinforcing end member further includes a pair of screw holes integrally provided on a side wall of the reinforcing end member without a slit, and an anchor member is screwed into each of the screw holes. 13. The structural member according to claim 12, wherein the structural member serves as an anchor to the filler. 15. Each of the reinforcing end members includes at least two pairs of parallel ribs extending inward along each of the slits, and a pair of insertion holes disposed at ends of the ribs. The structural member according to claim 12, further comprising a pair of screw holes integrally provided on a side wall having no slit portion. 16. The apparatus according to claim 16, further comprising a step formed on an outer peripheral portion on an upper side of the reinforcing end member to prevent the reinforcing end member from being inserted into the case too deeply. 16. The structural member according to any one of 12 to 15.