JPH0693742A - Structure of fire escape stairs of skyscraper - Google Patents

Abstract

PURPOSE:To enhance the fire resisting performance by suppressing the floor area shared by the stairs to the possible minimum while the ideal arrangement for evacuation is reserved. CONSTITUTION:At each floor plane, a skyscraper has a common core 1 part, which is composed of an elevator 12. water-associated equipment room 2, staircase 3, and corridor 4, wherein two parallel flights of stairs 5 are furnished in such a way as crossing in a vertical plane. In a plane, the perimeter of each flight of stairs is surrounded by a partition wall 6 to accommodate in one staircase 3, and the bulkhead 6 of staircase is provided with a doorway 7 functioning also as an evacuation hole which is positioned facing corridors 4 on both sides mating with each other at the staircase 3. The space between the crossing flights of stairs 5 is partitioned by a fire resisting partition wall 14 of multi-layer structure stretching from the over-floor to the under-floor, and each stair slab is made from precast concrete.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は高層建築物の避難階段構
造に係るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an evacuation stair structure for high-rise buildings.

【０００２】[0002]

【従来の技術】従来、一般には１５階建以上の高層ビル
は特別避難階段が２個所必要であり、同階段の位置は避
難上、重複しないように相対する位置が義務付けられて
いる。2. Description of the Related Art Conventionally, in general, a high-rise building having 15 or more floors requires two special evacuation stairs, and the positions of the stairs are required to be opposite to each other so that they do not overlap in evacuation.

【０００３】[0003]

【発明が解決しようとする課題】従って階段の占める床
面積が増大し、居室のレンタブル面積（収益面積）が減
少する。本発明はこのような実情に鑑みて提案されたも
ので、その目的とする処は避難上理想的な形態をなし、
しかも階段の占める床面積を最小限に抑制する高層建築
物の避難階段構造を提供する点にある。Therefore, the floor area occupied by the stairs increases and the rentable area (earning area) of the living room decreases. The present invention has been proposed in view of such circumstances, and the intended place has an ideal form for evacuation,
Moreover, the point is to provide an evacuation stair structure for high-rise buildings that minimizes the floor area occupied by stairs.

【０００４】[0004]

【課題を解決するための手段】前記の目的を達成するた
め、本発明に係る高層建築物の避難階段構造は、各階の
平面において、共用コア部分がエレベーター、水廻り設
備室、階段室及び廊下より構成された高層建築物におい
て、互いに平行した２つの階段を垂直面においてクロス
状に配設するとともに、平面上において、同各階段の周
辺を仕切壁で囲繞して１個所の階段室に納め、同階段室
の区画壁には、同階段室における相対する両側の廊下に
面して避難口を兼ねた出入口を設け、前記クロス状の階
段の間を上下階に亘って延びる連層壁として構成された
耐火仕切壁で区画するとともに、階段スラブをプレキャ
ストコンクリート造として構成されている。In order to achieve the above object, in the evacuation staircase structure of a high-rise building according to the present invention, in the plane of each floor, the common core part is an elevator, a water supply facility room, a staircase room and a corridor. In a high-rise building composed of two stairs, which are parallel to each other, are arranged in a cross shape in a vertical plane, and on the plane, the periphery of each staircase is surrounded by a partition wall and housed in one stair room. In the partition wall of the staircase, there is an entrance / exit that faces the corridors on both sides of the staircase facing each other, and also serves as an evacuation exit, and as a multi-story wall extending between the cross stairs to the upper and lower floors. The staircase slab is constructed as a precast concrete structure while it is divided by the constructed fireproof partition wall.

【０００５】[0005]

【作用】本発明によれば前記したように、互いに平行す
る２つの階段を垂直面においてクロス状に配設して、平
面においては前記各階段の周辺を仕切壁で囲って、共用
コア部分における１個所の階段室に納め、階段の占める
床面積を最小限にとどめるものである。According to the present invention, as described above, two stairs parallel to each other are arranged in a cross shape in a vertical plane, and in the plane, the periphery of each stair is surrounded by a partition wall, and in the common core portion. The floor space occupied by the stairs is kept to a minimum by storing it in one staircase.

【０００６】また前記階段室にはコア部分両側の廊下に
面して避難口を兼ねた出入口を設けることによって、非
常の際、避難路が重複することなく、理想的な避難路が
形成される。更に前記クロス状の階段の間を、上下階に
亘って延びる連層壁より構成された耐火仕切壁で区画す
るとともに、階段スラブをプレキャストコンクリート造
としたことによって、層間耐火区画が形成される。Further, by providing the entrances and exits that also serve as evacuation openings facing the corridors on both sides of the core part in the staircase, ideal evacuation paths are formed without overlapping evacuation paths in an emergency. . Further, the space between the cross-shaped stairs is divided by a fire-resistant partition wall composed of a multi-story wall extending over the upper and lower floors, and the step slab is made of precast concrete to form an inter-layer fire-resistant partition.

【０００７】[0007]

【実施例】以下本発明を図示の実施例について説明す
る。図３は高層建築物の基準階を示し、１は共用コア
で、水廻り設備室２、避難用の階段室３、廊下４より構
成されている。５は互いに平行且つ垂直面においてクロ
ス状に配設された階段で、各階段５の周辺に仕切壁６が
囲繞され、１個所の階段室３に納められている。The present invention will be described below with reference to the illustrated embodiments. FIG. 3 shows a standard floor of a high-rise building, and 1 is a shared core, which is composed of a water supply facility room 2, an evacuation staircase 3, and a corridor 4. Reference numeral 5 is a staircase arranged in a cross shape in parallel to each other and in a vertical plane, and a partition wall 6 is surrounded around each staircase 5 and is housed in one staircase room 3.

【０００８】同階段室３における相対する両側の廊下４
に面して避難口を兼ねた出入口７が設けられている。図
中８は共用コア１内の通路、９は間仕切壁、１０は事務
室、１１は同事務室の間仕切壁、１２はエレベーター、
１３はエレベーターホールである。前記したように互い
に平行し、且つ垂直面においてクロス状に配設された一
双の階段５，５の間が上下階に亘って延びる連層壁とし
て構成された耐火仕切壁１４で区劃され、階段スラブ１
５がプレキャストコンクリートより構成されている。図
中１６は柱である。Corridors 4 on opposite sides of the staircase 3
There is an entrance / exit 7 that also serves as an evacuation exit. In the figure, 8 is a passage in the shared core 1, 9 is a partition wall, 10 is an office room, 11 is a partition wall of the office room, 12 is an elevator,
13 is an elevator hall. As described above, a pair of stairs 5 and 5 arranged in a cross shape in a vertical plane are separated from each other by the fire-resistant partition wall 14 configured as a multi-story wall extending over the upper and lower floors, Stairs slab 1
5 is composed of precast concrete. In the figure, 16 is a pillar.

【０００９】[0009]

【発明の効果】このように本発明においては、高層建築
物の各階平面にエレベーター、水廻り設備室、階段室及
び廊下より構成された共用コア部分に、互いに平行した
２つの階段を垂直面においてクロス状に配設し、平面上
において同各階段の周辺を仕切壁で囲繞して１個所の階
段室に納めたことによって、階段の占める床面積を最小
限にとどめ、居室のレンタブル面積を増大し、収益面積
の増大を図ったものである。As described above, according to the present invention, two stairs that are parallel to each other are formed in a vertical plane on a common core portion formed by an elevator, a water supply facility room, a staircase room, and a corridor on each floor of a high-rise building. By arranging in a cross shape and surrounding each staircase on the plane by a partition wall and storing it in one staircase, the floor area occupied by the staircase can be minimized and the rentable area of the living room can be increased. However, the profit area has been increased.

【００１０】また前記階段室の区劃壁には、同階段室に
おける相対する両側の廊下に面して避難口を兼ねた出入
口を設けたことにより２つの階段を平行に、且つ垂直面
にクロス状に配設したことと相俟って避難上理想的な形
態をとることができる。更にまた本発明によれば階段ス
ラブはプレキャストコンクリート造とし、且つ前記一双
の階段の間に上下階に亘って延びる耐火仕切壁１４で区
画したことによって、階段の耐火性が確保される。In addition, the partition wall of the staircase is provided with an entrance / exit serving as an evacuation exit facing the corridors on the opposite sides of the staircase, so that the two stairs are crossed in parallel and vertically. Combined with the arrangement in a shape, it can take an ideal form for evacuation. Furthermore, according to the present invention, the staircase slab is made of precast concrete, and is divided by the fireproof partition wall 14 extending between the upper and lower floors between the pair of staircases, whereby the fireproofness of the staircase is ensured.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明に係る高層建築物の避難階段構造の一実
施例を示す縦断面図で、図２の矢視ロ−ロ図である。FIG. 1 is a vertical cross-sectional view showing an embodiment of an evacuation staircase structure for a high-rise building according to the present invention, and is a perspective view taken along the arrow in FIG.

【図２】図１の矢視図イ−イ図である。FIG. 2 is a view in the direction of the arrow in FIG.

【図３】基準階の平面図である。FIG. 3 is a plan view of a reference floor.

【符号の説明】[Explanation of symbols]

１ 共用コア ２ 水廻り設備室 ３ 階段室 ４ 廊下 ５ 階段 ６ 仕切壁 ７ 避難口を兼ねた出入口 ８ 通路 ９ 間仕切壁 １０ 事務室 １１ 間仕切壁 １２ エレベーター １３ エレベーターホール １４ 耐火仕切壁 １５ 階段スラブ １６ 柱 1 Shared Core 2 Water Facility Room 3 Stair Room 4 Corridor 5 Stairs 6 Partition Wall 7 Evacuation Door Exit 8 Passage 9 Partition Wall 10 Office Room 11 Partition Wall 12 Elevator 13 Elevator Hall 14 Fireproof Partition Wall 15 Stair Slab 16 Pillars

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 各階の平面において、共用コア部分がエ
レベーター、水廻り設備室、階段室及び廊下より構成さ
れた高層建築物において、互いに平行した２つの階段を
垂直面においてクロス状に配設するとともに、平面上に
おいて、同各階段の周辺を仕切壁で囲繞して１個所の階
段室に納め、同階段室の区画壁には、同階段室における
相対する両側の廊下に面して避難口を兼ねる出入口を設
け、前記クロス状の階段の間を上下階に亘って延びる連
層壁として構成された耐火仕切壁で区画するとともに、
階段スラブをプレキャストコンクリート造としてなるこ
とを特徴とする高層建築物の避難階段構造。1. In a high-rise building in which a shared core portion is composed of an elevator, a water supply facility room, a staircase room, and a corridor on a plane of each floor, two stairs parallel to each other are arranged in a cross shape in a vertical plane. Along with this, on the plane, the stairs are surrounded by partition walls and housed in one stair room, and the partition walls of the stair room face the corridors on both sides of the stair room facing each other. With a doorway that doubles as a partition, the space between the cross-shaped stairs is divided by a fire-resistant partition wall configured as a multi-story wall extending over the upper and lower floors,
An evacuation staircase structure for high-rise buildings, characterized in that the staircase slab is made of precast concrete.