JP4753503B2 - Deck plate triangular truss - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of a triangular truss that supports a lower side of a deck plate used for forming a roof portion of a structure, for example.
[0002]
[Prior art]
As shown in FIGS. 5 and 6, the triangular truss structure 103 that supports the lower side of the deck plate 101 has a predetermined distance in the longitudinal direction with respect to the upper section steel 105 that supports the lower side of the deck plate 101, for example. Thus, the pair of upper mounting steel plates 107 are welded. In the pair of upper mounting steel plates 107, a central portion is cut out in a cross-sectional shape of the upper section steel 105, a lower portion is bent, and the bent portion 109 is disposed obliquely facing a reverse C shape.
[0003]
Then, the upper end of the slanted section steel 111 is welded to these bent portions 109. In this way, the pair of diagonal steel plates 111 are arranged in an inverted C shape, and both lower ends are welded to the lower mounting steel plate 113. The lower mounting steel plate 113 is welded to a lower steel material 115 disposed in a direction perpendicular to the upper structural steel 105. The lower mounting steel plate 113 has a central portion cut out in a cross-sectional shape of the lower section steel 115 and is disposed obliquely.
[0004]
In another conventional example, in the corrugated cross section of the deck plate 101, both upper ends of a pair of section steels or a pair of bar members (corresponding to a slanted section steel) are formed in an inverted C shape on both side surfaces 101A below the corrugation. Weld to. And it was the structure which welds both lower ends to the shape steel or bar material (equivalent to a lower shape steel) arrange | positioned in parallel with the deck plate 101. FIG.
[0005]
[Problems to be solved by the invention]
However, in the former former structure (FIGS. 5 and 6), the upper mounting steel plate and the lower mounting steel plate are firmly welded and fixed to the upper structural steel and the lower structural steel. It is also necessary to be cut into the cross-sectional shape of the section steel or bend a part in accordance with the inclination of the oblique steel material. A large number of upper mounting steel plates and lower mounting steel plates having such complicated shapes must be arranged along the longitudinal direction of the lower section steel, and there are many shape processing and welding operations in the factory, which increases the cost. Was.
[0006]
In the latter latter structure, the welded parts that weld both ends of the diagonal steel (or bar) are both sides of the corrugated cross section of the deck plate. Depending on the corrugated dimensions, the welded parts become smaller and smaller. Only a triangular truss was obtained.
The present invention has been made to solve the above-described problems. The triangular truss of a deck plate that can reduce the cost by reducing the shape processing and welding work for attaching the oblique steel material and can obtain a large-scale one. The purpose is to provide.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the first invention is a triangular truss that supports the lower side of the deck plate, and the lower steel material for fixing the lower end of the diagonal steel material arranged in an inverted C shape has a cross section. A triangular truss of a deck plate characterized by having both sides of an inverted C shape.
[0008]
According to a second aspect of the present invention, there is provided a deck plate having a corrugated cross section, and a pair of upper portions that support the lower side of the deck plate, are long in the wavelength direction of the wave, are arranged in parallel to each other, and have one flat side facing each other in parallel. Between the steel material and the pair of upper steel materials, the steel material is disposed in a direction perpendicular to the longitudinal direction of the upper steel materials, and is diagonally positioned facing the inverted C shape at predetermined intervals along the flat side surface. A pair of upper mounting steel plates to which both side edges are fixed, an oblique steel member whose upper end is fixed to these upper mounting steel plates and arranged in an inverted C shape, and a lower end of the pair of diagonal steel members is fixed, so that the cross section A triangular truss for a deck plate, comprising: a lower steel member having both sides of an inverted C shape and disposed in a direction perpendicular to the wavelength direction of the wave.
[0009]
According to a third aspect of the present invention, the pair of upper steel members are shaped steels, and are arranged in a state where the flat one side surfaces of the shaped steels face each other in parallel, and the oblique steel materials are shaped steels, A flat truss truss for a deck plate, wherein one flat side surface of a steel material is fixed along the surface of the upper mounting steel plate.
According to a fourth aspect of the present invention, the lower steel material is formed by welding a pair of channel steels, opening the U-shaped cross sections of these channel steels facing each other, and welding the lower edges of both U-shaped steels. The triangular truss of the deck plate is characterized in that both sides of the inverted U-shape are formed at the bottom of both U-shaped.
[0010]
According to a fifth aspect of the present invention, the lower steel material has a substantially box-shaped cross section that is opened or closed by bending a strip-shaped steel plate, and both side surfaces of the substantially box-shaped form a reverse C-shape. It is a triangular truss of the deck plate characterized by doing.
According to a sixth aspect of the present invention, there is provided the triangular truss of the deck plate, wherein the lower steel material further includes a steel plate having the same shape as the space shape of the cross section fixed at a plurality of locations in the longitudinal direction as a reinforcing material.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
One embodiment of the present invention is shown in FIGS.
The deck plate 1 of this embodiment constitutes a roof portion 3 of a building and has a corrugated cross section as shown in FIG.
The lower side of the deck plate 1 is supported by channel steel which is the upper steel material 5. The upper steel material 5 is long in the wavelength direction of the waveform of the deck plate 1, and a pair is arranged in parallel to each other. Then, the flat one side surface 5A of the channel steel, that is, the bottom of the U-shaped cross section is opposed to each other in parallel.
[0012]
The upper mounting steel plate 7 is welded between the pair of upper steel materials 5. The upper mounting steel plate 7 has a quadrangular shape and is arranged in a direction perpendicular to the longitudinal direction of these upper steel materials 5. In addition, the pair is diagonally positioned facing each other in a reverse C shape at a predetermined interval. Then, both side edges of the square are welded along the flat side surface 5 </ b> A of the upper steel material 5.
In the vicinity where the upper mounting steel plate 7 is welded, a receiving member 9 that receives the lower side of the waveform of the deck plate 1 is straddling the pair of upper steel materials 5 in the upper portion 5B of the U-shaped section of the upper steel material 5. , Welded.
[0013]
The upper end of the channel steel which is the diagonal steel material 11 is welded to each of these upper mounting steel plates 7. One flat side surface 11 </ b> A of the groove steel, that is, the bottom of the U-shaped cross section is welded along the surface of the upper mounting steel plate 7. By this welding, a pair of diagonal steel materials 11 are arranged in an inverted C shape, and both lower ends are welded to the lower steel material 13 to form an inverted triangle.
[0014]
The lower steel member 13 is composed of a pair of channel steels 15 such that the U-shaped cross-sectional openings of these channel steels face each other and the lower edge portions 17 of both U-shapes are welded together. And the inclined surface suitable for welding with the diagonal steel material 11 is obtained by forming 17A of both sides | surfaces of an inverted U shape in the bottom part of both U-shapes. Steel plates having the same shape as the spatial shape of the cross section of the lower steel material 13 are welded as reinforcements 19 at a plurality of locations in the longitudinal direction of the lower steel material 13.
[0015]
The lower end of the inverted triangle formed by the oblique steel material 11 is shifted by a predetermined distance in the longitudinal direction of the lower steel material 13, not directly below the upper mounting steel plate 7. Moreover, two diagonal steel materials 11 are welded to each upper mounting steel plate 7, so that two pairs of diagonal steel materials are welded to the pair of upper mounting steel plates 7, and two inverted triangles are formed. .
[0016]
The shift of the lower ends of the two inverted triangles is in the reverse direction in the longitudinal direction of the lower steel material 13. In addition, a plurality of such a pair of upper steel materials 5, a pair of upper mounting steel plates 7, a pair of receiving members 9, and two pairs of oblique steel materials 11 are provided at regular intervals along the longitudinal direction of the lower steel material 13. A truss structure 21 in which a plurality of triangles are continuous as shown in FIG. 3 is formed along the lower steel material 13.
Further, a plurality of lower steel members 13 are provided in parallel with each other (not shown), and therefore a plurality of such truss structures 21 are provided in parallel with each other.
[0017]
(Effect of embodiment)
As described above, the cross section of the lower steel material 13 has both sides 17A having an inverted C shape, so that the lower end of the oblique steel material 11 may be welded along the both side surfaces 17A. The mounting steel plate 113 becomes unnecessary. Therefore, the shape processing of the lower mounting steel plate 113 and the work of welding to the lower steel material 13 are not required, and the cost of the triangular truss can be kept low.
Further, it is not necessary to use both side surfaces 101A of the corrugated cross section of the deck plate 101 as welded portions as in the prior art. Therefore, a large-scale triangular truss can be easily configured without being affected by the waveform dimensions.
[0018]
Further, when the upper mounting steel plate 7 is fixed between the pair of parallel upper steel materials 5, the both side edges of the square of the upper mounting steel plate 7 are welded along the flat side surfaces 5A of the upper steel material 5 facing each other in parallel. Therefore, welding is easily performed with respect to an arbitrary oblique angle of the upper mounting steel plate 7.
[0019]
Further, by using the prescribed grooved steel for the upper steel material 5 and the oblique steel material 11, the strength of the triangular truss can be maintained and the cost can be reduced compared to the case where a special steel material is used.
[0020]
Further, a pair of channel steels 15 are welded to the lower steel member 13 and the reinforcing members 19 are welded to a plurality of locations in the longitudinal direction, so that the strength of the lower steel member 13 is maintained, the cost is lowered, and eventually the triangular truss. The cost can be kept low.
[0021]
(Other embodiments)
In the above embodiment, the upper steel material 5 was a channel steel (FIG. 4B), but in other embodiments, other steel shapes, for example, angle irons, are used. The side surfaces can be made to face each other in parallel with the pair of upper steel members 5. At this time, the angle steel has two directions (FIGS. 4C and 4D).
[0022]
Moreover, in the above embodiment, the diagonal steel material 11 was channel steel (FIG.4 (E)), However, In other embodiment, another shape steel, for example, angle iron (FIG.4 (F)). Then, the flat one side surface of the angle iron can be welded along the surface of the upper mounting steel plate 7. At this time, the angle iron has two directions (not shown).
[0023]
Moreover, in the above embodiment, the lower steel material 13 was used by welding a pair of channel steels (FIG. 4 (A)), but in other embodiments, a strip-shaped steel plate is bent. Then, it has an open or closed substantially box-shaped cross section (FIGS. 4G, 4H, 4I, and 6J), and both side surfaces 13A of the substantially box shape form a reverse C-shape. It is also good.
[0024]
Moreover, in the above embodiment, members, such as each steel material, were fixed by welding, However, In other embodiment, you may fix with a bolt nut.
[0025]
Moreover, in the above embodiment, although the inside of the cross section of the lower steel material 13 was a cavity, in other embodiment, concrete is poured into the inside of the cross section of the lower steel material 13 from upper opening. The roof supported by the truss structure 21 may serve as a weight that prevents the roof from being covered with wind.
Further, in the above embodiment, the upper mounting steel plates 7 are arranged such that a pair independent from each other is arranged in an inverted C shape. However, in other embodiments, the pair of upper mounting steel plates 7 are mutually connected. The upper end may be integrated with a horizontal flat plate. That is, both ends of the flat plate may be bent to form the pair of upper mounting steel plates 7.
[0026]
【The invention's effect】
As described above, according to any one of the first to sixth inventions, the cross section of the lower steel material for fixing the lower end of the oblique steel material arranged in the inverted C shape is By having both sides of the letter shape, there is no need for conventional bottom mounting steel plates, so there is no need for shape processing of the bottom mounting steel plates and welding to the bottom steel materials in the factory, and the cost of the triangular truss is kept low. be able to.
[0027]
Further, according to any one of the second to sixth inventions, both sides of the corrugated cross section of the deck plate do not need to be welded parts, and are not affected by the corrugated dimensions, so that a large-scale triangular truss is easy. Is obtained.
[0028]
Further, when fixing the pair of upper mounting steel plates between the pair of upper steel materials supporting the lower side of the deck plate, both side edges of the upper mounting steel plates are fixed along the flat side surfaces of the upper steel materials facing each other in parallel. Therefore, fixing is easy with respect to an arbitrary oblique angle of the upper mounting steel plate.
According to any one of the third to sixth inventions, the cost of the triangular truss can be kept low by using the shape steel for the upper steel material and the oblique steel material.
According to any one of the fourth to sixth inventions, the cost of the triangular truss can be kept low by using the grooved steel for the lower steel material.
According to the sixth invention, the strength of the lower steel material can be improved by the reinforcing material.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of the present invention.
FIG. 2 is an enlarged view showing a main part of FIG.
FIG. 3 is a side view showing the whole of FIG. 1;
4A is a front view of FIG. 1 and FIG. 4B is a modification of the cross section of each part of FIG.
FIG. 5 is an overall side view showing a conventional example.
6 is a front view of FIG. 5. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Deck plate 3 Roof part 5 Upper steel material 5A Side surface 5B Upper part 7 Upper attachment steel plate 9 Receiving member 11 Diagonal steel material 11A Side surface 13 Lower steel material 15 Channel steel 17 Lower edge part 17A Both sides 19 Reinforcement material 21 Truss structure

Claims (5)

  A deck plate having a corrugated cross section, a pair of upper steel members that support the lower side of the deck plate, are long in the wavelength direction of the wave, are arranged in parallel to each other, and have one flat side facing each other in parallel. Between the upper steel members, the upper steel members are arranged at right angles to the longitudinal direction of the upper steel members, and are obliquely positioned facing each other in a reverse-shaped manner at predetermined intervals, and both side edges are fixed along the flat side surfaces. A pair of upper mounting steel plates, an oblique steel material whose upper end is fixed to these upper mounting steel plates and arranged in an inverted C shape, and a lower end of these pair of diagonal steel materials is fixed, so the cross section is an inverted C shape And a lower steel member arranged in a direction perpendicular to the wave wavelength direction.   The pair of upper steel members is a section steel, and is disposed in a state where flat one side surfaces of the shape steel are opposed in parallel to each other, and the oblique steel member is a section steel, and the flat one side surface of the steel member is The deck truss truss according to claim 1, wherein the truss is fixed along the surface of the upper mounting steel plate.   The lower steel is made of a pair of channel steels, with the U-shaped cross-sectional openings of these channel steels facing each other and welding the lower edges of both U-shaped parts, The triangular truss for a deck plate according to claim 1, wherein both side surfaces of an inverted C shape are formed.   The lower steel material is formed by bending a strip-shaped steel plate to have an open or closed substantially box-shaped cross section, and both side surfaces of the approximately box-shaped form a reverse C-shape. Deck plate triangular truss as described in 1, 2 or 3.   5. The deck plate according to claim 1, wherein the lower steel material has a steel plate having the same shape as the spatial shape of the cross section fixed at a plurality of locations in the longitudinal direction as a reinforcing material. Triangular truss.

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