JP2620138B2 - Exterior structure of high-rise circular building - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an exterior structure of a super-high-rise circular building, and more particularly, to an exterior of a super-high-rise circular building having improved wind pressure resistance as a super-high-rise building. It is about structure.

[Related Art] In recent years, skyscrapers have been increasing due to the concentration of urban activities and the like, and since such skyscrapers form remarkable landmarks, the appearance of the entire building is designed. Is emphasized, and in particular, it is often performed in the form of a circular tower.

However, in high-rise buildings, not only the importance of exterior design but also the importance of wind design is important. Not only structural design for wind power but also consideration for so-called “building style” is important, so various exterior designs It is known that the method has been developed and effective.However, it is generally considered that forming a protrusion on the exterior wall of a building is disadvantageous due to the wind resistance. Have been.

By the way, in the structural design against the wind in the high-rise building as described above, experiments using a model have often been performed with the development of wind tunnel experiments, but conventional experiments generally have the assumed structure. This was done in the form of confirmation or additional tests on buildings, and only moderate wind resistance was obtained.

Therefore, although it was known that the suction force in the direction perpendicular to the wind direction shows a large negative wind pressure coefficient, no approach has been taken to elucidate the wind resistance characteristics of the skyscraper itself. The exterior of the building was not considered.

[Problems to be Solved by the Invention] The present invention has been conceived in view of the above-mentioned current situation, based on the development of intensive studies for elucidating the wind resistance characteristics of a high-rise building itself. The intent is to reduce the generation of negative wind pressure coefficients due to wind without imposing structural restrictions on the cylindrical design of high-rise buildings, streamlining the exterior design for wind power, and building An object of the present invention is to provide an exterior structure of a super high-rise circular building capable of suppressing generation of wind and wind noise as much as possible.

[Means for Solving the Problems] In order to solve the above problems, a technical means adopted in the present invention is to provide a plurality of ridges on an outer wall peripheral surface of a super-high-rise circular building. It is formed in an oblong shape as viewed from the front having a round surface on the periphery while projecting substantially perpendicular to the surface,
A plurality of the ridges are arranged at predetermined intervals in the circumferential direction and the height direction on the entire peripheral surface and the entire height surface of the outer wall except for the glass window surface, and a wind absorbing force acting on the wall surface from an unspecified direction. Is reduced.

[Operation] According to the exterior structure of the super-high-rise circular building of the present invention, the exterior structure projects substantially perpendicularly to the peripheral surface of the outer wall, and is disposed at a predetermined interval on the entire peripheral surface and the overall height of the outer wall. Multiple ridges can effectively counter wind acting from all directions and heights, reducing the negative wind pressure coefficient on the sides of cylindrical skyscrapers and reducing Building wind is also minimized. Further, since the peripheral edge of the ridge is formed in a round surface, generation of unpleasant wind noise is suppressed as much as possible.

Example An exterior structure of a high-rise circular building of the present invention will be described in detail with reference to the drawings of the example. FIG. 1 is a standard vertical sectional view of an outer wall mainly including a spandrel, FIG. 2 is a front view of an outer wall unit, and FIG. 3 is a plan view thereof.

First, a high-rise circular building adopting the present invention is referred to as a fifth-class building.
This will be described with reference to a schematic elevation view of the figure and a vertical sectional view of the standard floor in FIG.

In both figures, reference numeral 1 denotes the whole high-rise circular building, and the target building is a hotel building. 2 is an outer wall, 3 is a spandrel of each floor, 4 is a window sash formed in a continuous window type so as to face each guest room R on the standard floor of the hotel, 5 is a steel structure of the building 1, 6 Indicates the inside of the building 1, and 7 indicates the outside.

In FIGS. 1 to 3, the spandrel 3 of the outer wall 2 is formed by extending a large number of outer wall units 10 on the outside 7 side of the structural body 5, and the outer wall unit 10 is formed as a formed plate. The height H is made equal to the height of the spandrel 3 so as to be suitable for the product, and the length L is a unit length that divides and assigns the entire circumference of the spandrel 3. In this embodiment, the outer wall unit 10 is a metal formed plate, and is provided in a factory.

The outer wall unit 10 which is the most characteristic of the present invention is made of an aluminum casting as the material to be used, and has a ridge 12 formed on the outer seven surface side of the main body 11.

The ridge 12 of this embodiment has an oval shape in a front view with a round surface formed on the periphery as is apparent from FIGS. 1 to 3, and FIGS. 3 and 5 (a). As shown in (1), it projects substantially perpendicularly to the peripheral surface of the outer wall. And ridge 12
Are provided at predetermined intervals in the circumferential direction and the height direction of the outer wall. Reference numeral 15 denotes a finishing material arbitrarily applied to the outer surface of the outer wall unit 10, and in this example, acrylic urethane coating is applied.

On the back side of the outer wall unit 10, in addition to the entire peripheral frame,
A longitudinal reinforcing rib 16 having a taper downward,
Two reinforcing ribs 17 in the horizontal direction are integrally formed,
18 is a cone provided at the intersection. This complement rib 16
The height of the protrusion corresponds to the pressure receiving stress of the wind.

On the upper and lower sides of the outer wall unit 10, horizontal rails 41 for the gondola are formed at the connecting portions of the window sash 4, and the intermediate height of the spandrel 3 and the position behind the lower rail 41 are formed through the cone 18. The upper and lower fasteners 20 are attached to the slab 51 of the structural body 5 and the flange 53 below the steel beam 52, and are fixed. Reference numeral 21 denotes a base member of each part for the fastener 20.

2 and 3, the horizontal width a of the ridge 12 and the mutual distance b in the horizontal direction, the height h of the ridge 12 protruding from the surface of the main body 11, and the height of the ridge 12 in the height direction of the building 1 are shown. The length c, the distance d, and the like are determined from the scale of the building 1 according to a structural calculation using wind power and a wind tunnel experiment, and are assigned to the height H and the length L of the outer wall unit 10. Here, the interval b and the height h of the ridge 12 are at least a columnar shape formed to protrude from the outer wall 2,
Alternatively, the dimension is set to exclude a vertical member such as a cubic projected from the glass window surface. 19 in each of the above figures is
It is a fireproof covering material that covers all metal surfaces.

The configuration of the outer wall unit 10 of the present invention is not limited to the above embodiment. For example, the window sash 4 is not limited to the continuous window type, and the outer wall unit 10 can be made of precast concrete. In that case,
Although the weight is increased, the refractory coating 19 becomes unnecessary, and the structure 5
The structure for attaching to the curtain wall will use other types of fasteners, but in any case, the structure as the curtain wall is normal.

Next, the construction method of the above-mentioned exterior structure of the super-high-rise circular building of the present invention will be described.

In the spandrel 3 shown in FIGS. 1 and 2, the outer wall unit 10 is formed in advance as a unit, is attached to the structure 5 before and after the window sash 4, and is stably fixed by the fastener 20 provided on the back surface. Is done.

When the spandrel 3 is formed on the entire outer periphery of the building 1, the spandrel 3 has a ridge 12 in a direction perpendicular to the wind W from all directions, as shown in FIG. Will be. According to the knowledge obtained in the wind tunnel experiment, such a ridge 12 does not form a wing-shaped projection, so that a positive pressing force is not generated, and the airflow of the wind W is generated on the windward side. For all the ridges 12, a suction force S having a negative wind pressure coefficient is generated around the building 1. And wind W
The wind pressure coefficient of the suction force S caused by the wind direction W is, as shown in the comparison graph of FIG.
(B) As shown in FIG.
On the other hand, in the case of (a) having various ridges, -1.
It was confirmed that the degree was 2 or less.

Furthermore, it was confirmed that the depressurizing effect in each spandrel 3 also affects the portion of the intermediate window-type window sash 4 by being laminated and repeated, and the outer periphery of the building 1 has an overall effect. Then, the wind coefficient becomes about -1.4 to -1.5.

As described above, the exterior structure of the super-high-rise circular building of the present invention is such that a negative wind power coefficient due to wind power exerts a depressurizing action as a suction force on a cylindrical building having a normal smooth outer wall surface. Yes, it greatly facilitates the handling of wind power in structural design.

[Effect of the Invention] In the exterior structure of a super-high-rise circular building according to the present invention, a plurality of ridges are provided on the outer peripheral surface of the super-high-rise circular building, and the ridges project substantially perpendicularly to the peripheral surface. It is formed in an oblong shape as viewed from the front having a round surface at the periphery thereof, and the ridges are provided at predetermined intervals in the circumferential direction and the height direction on the entire peripheral surface and the entire height surface of the outer wall except for the glass window surface. Since a plurality of such arrangements are provided to reduce the suction force of the wind acting on the wall surface from an unspecified direction, the following effects are obtained.

A plurality of ridges that project almost perpendicularly to the outer peripheral surface and are arranged at predetermined intervals on the entire peripheral surface and the entire height of the outer wall are effective against wind acting from all directions and heights. To reduce the negative wind pressure coefficient on the side of a cylindrical skyscraper.

Since the ridges are arranged on the entire height of the outer wall, the generation of building-like wind in the lower part of the building is suppressed as much as possible.

Since the ridge has a round surface on the periphery, generation of wind noise is prevented as much as possible. In addition, such protrusions can be easily manufactured regardless of whether they are concrete or metal curtain walls.

Since the ridges formed in an oval shape having a round surface on the periphery are arranged at predetermined intervals in the circumferential direction and the height direction on the entire peripheral surface and the entire height surface of the outer wall, the circular shape of the building It is also excellent in design in conjunction with.

By exerting these effects, the generation of wind noise and building wind can be reduced as much as possible without imposing structural restrictions on the cylindrical design of a high-rise building, and a comfortable living environment or Can maintain a working environment,
Therefore, both the design and the exterior structure design can be compatible.

[Brief description of the drawings]

The drawings show an embodiment of the exterior structure of a super-high-rise circular building of the present invention, FIG. 1 shows a vertical sectional view of an outer wall mainly of a spandrel of a super-high-rise circular building adopting the present invention, and FIG. FIG. 3 is a front view of the outer wall unit, FIG. 3 is a plan view thereof, FIGS. 4 (a), (b) and (c) are illustrations of the relationship between wind and a building, and FIG. 5 employs the present invention. FIG. 6 is a vertical sectional view of a standard floor of a super-high-rise circular building. 1 ... super high-rise circular building, 2 ... outer wall, 3 ... spandrel, 4 ... continuous window sash, 5 ... structure, 6 ...
... Inner, 7 ... Outer, 10 ... Outer wall unit, 11 ... Main body, 12 ... Protrusion, 15 ... Finishing material, 16 ... Reinforcing rib, 17
…… Reinforcing rib, 18 …… Conical body, 19 …… Fireproof covering material, 20…
... fixing means, fasteners, 52 ... steel beams, W ... wind, wind direction, S ... suction power.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroshi Ueda 2-16-1 Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. −178144 (JP, U)

Claims (1)

(57) [Claims] 1. When a plurality of ridges are provided on the outer peripheral surface of a super-high-rise circular building, the ridges project substantially perpendicularly to the peripheral surface and have a round surface at the periphery. And a plurality of the ridges are disposed on the entire peripheral surface and the entire height surface of the outer wall except for the glass window surface at predetermined intervals in the circumferential direction and the height direction, and act on the wall surface from an unspecified direction. The exterior structure of a high-rise circular building characterized by reducing wind absorption.