JPS59158847A - Skeletal structure of dome roof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention generally relates to a frame groove of a dome roof covering a large space, and is used, for example, as a roof IC of a storage tank structure for LPG, LNG, etc.

As shown in FIG. 6, a plurality of annular frames (2) of different diameters connected in an annular manner by ring members (1) are arranged concentrically in the widthwise direction and with progressively smaller diameters in the upward direction, Each annular frame (2
) is a frame structure of a dome roof (4) connected by rafter members (3) arranged radially in the radial direction, and when an external shear force or torsional force is applied, the frame resists the external force with a rigid frame-like action. Therefore, in terms of strength, it is not a rational structure.Therefore, in order to increase the strength, the roof panels were welded to the rafter material (3) or the ring material (1) to improve rigidity. However, since the amount of welding is very large and the work is done on-site, it is laborious and time-consuming, has poor workability, and has the disadvantage of delaying the construction period.In order to solve these problems, In order to reinforce the frame structure of the dome roof (4), a method was adopted in which reinforcing diagonal members (5) were provided as shown in Fig. 4.However, the diagonal members (5) Between the intersections of the rafter material (3) and the ring material (1), that is, between the joints,
It is a diagonally constructed structure, and the connecting parts of the rough goo material (3), ring material (1), and diagonal material (5) are assembled at the joint, and the construction ：′1′
sとな′″′C“1・The diagonal material (°) I received is even more fujiji!
゛An.

Therefore, if the rafter material (3) is reduced to reduce the weight, there is a risk that the ring material (1) will buckle at the local area.

Therefore, the present invention takes into account the above problems and provides strength against buckling.
This design aims to improve efficiency and reduce weight, as well as to facilitate construction.The feature is that multiple annular frames connected by ring material are used in the height direction. The annular frames are arranged on a concentric circle with a diameter reduced by about 1, and each annular frame is connected by rafter members arranged radially in the radial direction, and the two are connected by a tub reinforcement between the fixed member and the ring member. In the frame structure of a dome roof in which reinforcing diagonals are provided up to the center, the outer edge area from the radius of the dome roof, the rings adjacent to each other between the joints of the O-ring material and the rough goose material. A reinforcing diagonal member is installed across the middle part of the material side and the middle part of the rafter material side, and the center part side end of each diagonal member placed closest to the center part is connected to each rafter material. At the point.

□ Atom, explaining the embodiment of the present invention based on the drawings, Cold:, Voice, '1 In figure 1, Moe is sitting on the dome roof.
'The dome roof (LO is connected in an annular manner by the ring material OD and equipped with annular frames a'zr of different diameters), each annular frame iμ is connected concentrically in the height direction. The annular frames are arranged upward in order of decreasing diameter.The annular frames are connected by rafter members arranged radially in the radial direction.

Radius of the dome roof αO? Annular frame +121 in the outer edge area positioned outward from the lower edge, that is, ring material 01J
The reinforcing diagonal material side is strung and tightened between the adjacent ring material σB and the intermediate portion on the rafter material 03 side.

In addition, in this example, reinforcing diagonal members α (g) are installed across the center portions between the joint parts f141.
, each diagonal member side arranged in a space formed by a pair of ring members u11 and a pair of rough goo members 0 adjacent to each other has a substantially rhombic shape. Each diagonal member is made of H-beam steel, for example, as shown in FIG. 2, and each end of the diagonal member σ9 is provided with a ring member αD.

Or a connecting plate (16
1 is regretted. Each connecting plate αG is provided with appropriate through-holes (17) for bolt insertion and general use.
, On the other hand, the ring to which each connecting plate σG is connected, the joint part on the material a1J or rough goo material α3, and the connecting plate [16
A port insertion hole a9 corresponding to the insertion hole 0η of No. 1 is provided, and as shown in FIG.
The connection plate Q61 of 05 is joined, and the connection plate ua c on both sides
It is constructed so that it can be connected at the same time by bolting through the holes t8 and t8, and the holes and holes of the joint CG+.

In addition, each of the diagonal members (5) disposed closest to the center, that is, in this embodiment, the sixth annular frame σ2 and the fourth annular frame σ2 toward the center from the outermost annular frame 121 As shown in FIG. 1, each diagonal member 09 disposed between the ring-shaped frame az and
The center part 1 between the joint parts on the side is connected to the bottom, and the end on the radially inner side, that is, the center part side is connected to the joint part (141) between the ring material surface and the after material α3, respectively □ connected.

, and arranged in a space formed by a pair of ring materials Qll and a pair of rafter materials 03 adjacent to each other,
The sides of each pair of diagonal members formed are approximately in the shape of a ■.

Furthermore, reinforcing diagonal members 05 are provided every 90 degrees up to the center. , annular frame Ga
As shown in FIG. The annular frame ap on the frame and the innermost circumference,
, and each pair of diagonal members q5 are constructed in a substantially 7-shape shape that extends inward in one radial direction.

The embodiment of the present invention is constructed as described above.In general, in the frame structure of these dome roofs αQ, which is mainly composed of one piece of wood, one piece of wood, and one piece of ring material αD, the frame structure of the dome roof αQ is usually made of lutter, one piece of wood, and one piece of ring material αD. Since the cross-sectional shape of is constant, it acts on each rough and tar material 03 such as 11 approaching the outer periphery. The applied load is large9, so the sag of the dome roof structure as a whole is determined by the strength near the outer periphery. In this embodiment, since the diagonal members (to) are provided in the outer edge area outside the 7th periphery of the radius [r], the strength of the outer periphery is increased, and the -C dome roof (10 overall 7, it is possible to create a frame structure with balanced strength.Furthermore, in each space formed by one row of adjacent ring materials (ID and one length of rough goo material u3) in the outer edge area, each oblique Each diagonal member u has a configuration in which the members Ct5i are arranged in a substantially rhombic shape.
9 (via 1G, ring material 01) or the joint portion of rough goo material 03 (18Hc bolts are fastened). Since the structure allows bolts to be fastened at the same time, construction of the diagonal member opening 9 on site is facilitated, and work efficiency can be improved. Therefore, for torsional external force,
It forms a truss structure and improves shear rigidity, and the diagonal members (151) provided in the outer edge area also provide the same effect, thus improving the strength and rigidity of the dome house s00 as a whole. Since the center part 1 is reinforced with a diagonal opening, it has excellent rigidity and earthquake resistance.

Furthermore, the center side end of the valley diagonal member 09 disposed closest to the center is the joint a4+ between the ring material circle and the rough goo material α3.
Since it has a substantially V-shaped configuration 1~ connected to each other, there is no local concentration of load, and the occurrence of local buckling etc. can be prevented.
Strength against buckling can be improved.

On the other hand, if the configuration is such that the connecting part (141) between the center side end of the valley diagonal member 09 located closest to the center +97g 01) and the rafter material u3 is connected, the ring material (11
) Since the load is concentrated on the connecting part of the ring material (11)
There is a high possibility that locking or local buckling will occur.

As mentioned above, dome roofs (
The overall strength and stiffness of the shifter 10 is improved and therefore the shifter [
The number of 03 and ring materials d and D can be completely reduced, and the weight of the dome roof (■0) can be reduced as a whole.Furthermore, it is not necessary to attach the roof board to rough goo material (13 and ring material (11) K). This will improve work efficiency.

In this example, the dome roof has a structure reinforced with diagonal members q9 every 90 degrees to the center (1 and 0 are shown, but
It may be a structure that is reinforced every 180 degrees or every 120 degrees, or it may be a structure that is reinforced symmetrically.

Furthermore, although the diagonal member C15 is provided in a substantially rhombic shape in the outer edge area of the radius (r), the area provided in this rhombus shape is either 7 of the radius (r) or within 7 of the radius (rl). It is also possible to have a configuration in which up to - is provided.Furthermore, each diagonal member (
The shape formed by the former is also not limited to a diamond shape.

As mentioned above, this structure is applied to the outer edge region of the radius J of the dome roof, between the joint parts of the link material and the rafter material, on the adjacent link material side [11j part and the rough goose material side]. Reinforcing piece diagonal members are installed in the middle part and valleys, and the core center side end of each diagonal member placed closest to the center is connected to each rafter. The number of rough goo materials and ring materials can be reduced by reinforcing
The weight of the entire dome roof can be reduced. In addition, there is no need to attach the roof plate to the rafter material or the ring roof, and the connecting structure of the diagonal material is also cost-saving, making construction easier on site and improving work efficiency. In general, it has the advantage of being able to prevent the local seat 7I-11.

Figures 5(a) to 5(a) show comparative examples of the strength of the seat and field on the roof.
As shown in Fig. M5 (a), the structure without reinforcing members +
7) F-mu&root (4OA) nogl/ff(i/!t',
In the case of r I t Li, Fig. 5(b) does not show tc, Ruchiku, only the outermost l'its are 21″1η that are strong in the grapes.
Dome roof of 4 (IB) 11 strength - 71, 13 times, with diagonals (c) from the 1g part outside the 1g part of the 1st floor shown in Figure 5 (C) to the 2nd step. 1 cloth) 1 yellow moth
The buckling strength of the four dome L is approximately 1.46,
As shown in Fig. 5(d), the dome of the groove chamber is extended by four lengths with diagonal members (G) at the third stage trench from the outermost periphery, and the chamber liquid (+c
The buckling strength of D is about 1°8 (U1, 9, Fig. 5 (f shown in -, lJj<, greedy rafter 'I'+43;
(4J Takabi) Dome's I-cho (4 (
IE)'s 1/Hinota j value is approximately 1°80 times larger, and the dome, chamber fluid (40 tach) structure in Figure 5(d) (
・-11. Compared to the dome ring & (4 (IE) appendix) in Figure 5(e), the buckling strength is approximately equal.-10,000N
>i person ik, r? ; About Yamato Ring N 141
) and the shape of the shifter are 41+43 because they are the same.
) Dome roof (4 (ID) is rough turf 1.U+43 compared to dome roof (40E))
, ':i', the weight can be reduced by about 38%, and the welding process for welding i (on-site welding process of 43j) can be reduced by about 0%.

Claims (1)

[Claims] 1. A plurality of annular frames connected in an annular manner by ring threads,
The annular frames are arranged concentrically in the height direction with diameters decreasing in order upwards, and each annular frame is connected by rafter members arranged radially in the radial direction, reinforcing diagonal members that reinforce between each rafter member and the ring member. In the frame structure of a dome roof in which a groove is provided in the center, at the outer edge region of the radius of the dome roof, the middle part of the ring material side adjacent to each other between each connection part between the ring material and the lid material. Reinforcing diagonal members are installed at the intermediate portions of the roughme timbers 1, and the end portion of each diagonal member placed closest to the center is connected to each rafter material. The frame structure of the dome roof.