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Thanks to NIKKEN SEKKEI for authorizing the publication of the project on mooool, Text description and photos provided by NIKKEN SEKKEI.
日建设计：本项目所在的枚方市交通十分便利，乘坐电车30分钟即可到达大阪和京都。枚方市综合文化艺术中心由三个礼堂和一个美术画廊组成，距离位于枚方市中心的枚方市站步行５分钟，作为枚方市的新地标，为了使其成为广大市民长久喜爱的设施，我们的目标是打造一个“文化艺术聚集地”和“盎然绿意”交织的空间。
室外的施设前广场上分散配置了方便市民集会的草坪广场、树荫广场和舞台等文化艺术空间。内部设计注重与外部空间的连续性，通过中庭和檐口绿化营造出绿意盎然和自然光充沛的空间。旨在通过设施内外空间的融合促进市民艺术活动的蓬勃发展。
NIKKEN SEKKEI：The Hirakata Performing & Visual Arts Center is centrally located in Hirakata City, 30 minutes by train from Osaka and Kyoto, and a five-minute walk from Hirakata Station. Its three halls and art gallery are designed as a space where culture, art and greenery are interwoven, with the aim to create a new city landmark cherished by the citizenry.
Outside, the plaza in front of the facility is dotted with spaces for culture and art, including a grassy area where citizens can easily gather, a shaded area, and a stage. The interior space was created with an awareness of spatial continuity with the exterior, where the courtyard and greened eaves create a space with abundant nature and natural light. We hope that the interior and exterior will support citizens’ artistic activities as a single integrated space.
“紧凑型”礼堂 A compact hall
我们希望本项目不仅是一个与文化艺术中心相称的雅致空间，其规模尺度体系亦应便于市民使用。置身于控制了层高的入口大厅和各个礼堂，可以感受到那种距离带来的身临其境之感。除高度方向外，通道宽度和各房间的距离也兼顾了视野与紧密度，形成可以感受到人的活动和丰富绿色的空间。
We sought to create an elegant and refined space befitting a cultural and artistic center, while at the same time pursuing easy-to-use dimensions. The entrance lobby and halls, with their reduced height, allow visitors to enjoy a sense of realism. The height, along with the width of the corridors and the distance between the various rooms, are designed to ensure visibility and intimacy. The facility’s spaces allow people to feel others’ activities as well as the abundant greenery.
▽艺术文化中心内部礼堂 Inside the auditorium
外观上很好地控制了体量，建筑静立于绿色中，营造出任何人都可利用的安心感，施设前的广场也成为可供大众共享的空间。
The exterior of the building is also purposely less voluminous, as it stands quietly amidst the greenery, affording a sense of security that allows anyone to use the facility and enjoy the front plaza.
▽艺术文化中心建筑外观 Architectural appearance
▽被绿色自然包裹的静谧之中 Surrounded by green nature
兼具设计感与功能性的内外部装饰 Combining functionality and aesthetics in interior and exterior design
为了实现对礼堂的声环境至关重要的声音扩散和反射，内外部装饰中使用的釉面砖共制作了4种不同的剖面形状。具有厚重感的礼堂和以木材、砖块为基调的入口呈现出小巧精致的氛围，力求将其打造成市民们尽享艺术的殿堂。
The bricks used for the interior and exterior were glazed and created in four different cross-sectional shapes to achieve the kind of sound diffusion and reflection qualities that are important for the hall’s acoustic environment. We hope that the massive hall and the wood and brick-based entrance will furnish a high-quality atmosphere, and that the facility will come to be a place where citizens can fully enjoy the arts.
▽内部空间 Interior space
首个采用辐射空调的剧场（礼堂）及其环保措施 Radiant air conditioning & environmental consciousness: a theater first
想在礼堂这样的大空间中使用大量空气运行空调，必须采取相应措施以避免由通风和高差造成的冷热不均。在本项目中，为了实现舒适的观赏环境，首次将辐射空调用于礼堂（剧场设施）中。辐射板被安装在座席背面和天花板较低的1、2层座席后部的天花板上。即使是辐射空调，也需要为礼堂提供最低限度的新风，因而采用了人体感知不到的低风速进气以避免产生通风气流。在设计和施工时，我们分别通过模拟和实验室及实物模型对热舒适度进行了确认，根据竣工后实际演出时所做的舒适度问卷调查结果显示，95%以上的观众选择了“普通”以上的舒适度。
In a large space such as a hall, air conditioning processes use large volumes of air. Measures are therefore required to prevent drafts and uneven temperature distribution due to elevation differences. In this project, radiant air conditioning was adopted for the first time in a hall. Radiator panels were placed on the backs of the seats, on the ceiling surfaces above the 1st floor seats, and in the rear of the 2nd floor seats where the ceiling height is low. Radiant air conditioning must also supply a minimum amount of outside air to the hall. However, equipment was tuned so that air drafts were rendered indiscernible. Thermal comfort was confirmed by simulations during the design stage and by lab tests and mock-ups during construction. In a post-construction questionnaire conducted during an actual performance, more than 95% of the audience responded that the interior conditions felt “normal” or better among five choices: “comfortable”, “somewhat comfortable”, “normal”, “somewhat uncomfortable”, and “uncomfortable”.
▽辐射空调关系图 Radiant air conditioning diagram
下水道的污水作为一种未经利用的能源，经高度处理后作为热源水用于热泵生产辐射空调所用的冷温水。
屋顶上设置有太阳能发电板，除在平时为电动汽车充电和共用区域照明等输送电力外，还构筑了可由电动汽车的电池向共用区域照明等反向供电的系统以在紧急情况发生时应对BCP(业务连续性计划)。
此外，本设施采用了利用水蓄热和高效螺杆机组的热源系统、新风制冷控制、CO2浓度控制等多种节能技术，取得了环境性能评估系统CASBEE的S级认证。
Hot and cold water used for the radiant air conditioning is produced by a water source heat pump that uses highly treated sewage water, an unutilized energy resource.
Solar panels have been installed on the rooftop to charge electric vehicles and to provide power for common area lighting, etc. In case of emergencies, a reverse power transmission system allows electric vehicle batteries to illuminate lights in the facility’s common areas, etc. for BCP (business continuity plan) service.
In addition, various energy-saving technologies have been adopted, such as a heat source system using thermal water storage and a high-efficiency screw chiller (vapor compressor), an outside air cooling system, and CO2 suppression. These have helped the facility to earn a ranking of “S” (Excellent), according to the Comprehensive Assessment System for Built Environment Efficiency (CASBEE) environmental performance rating system.
▽环境剖面 Section
▽在内部感受延伸的外景 Feel the extended exterior scenes inside
通过具有厚重感的砖块实现丰富的音响效果 Solid brick finish affords rich acoustic resonance
为了充分确保早期反射声，大、小礼堂以舞台和观众席顺畅相连形成一体化空间的形状为基础，结合天花板高度和观众席宽度的比例来确定平剖面形状。音响反射板和观众席的侧墙作为主要反射面，采用了可反射包括低音区域在内的兼具刚性和表面适度凹凸不平的砖砌饰面。通过使用数种砖块进行多种方式砌筑，提高了声音的扩散度。为了确保更多的反射声，大礼堂从舞台到观众席设置了连续的檐状反射面。矩形平面的活动礼堂墙面也采用了凹凸不平的砖砌饰面，用以避免颤动回声(flutter echo)。
In order to ensure sufficient early reflected sound, the basic shapes of the large and small halls were designed for smooth continuity and unification between the stage and audience seats. The halls’ floor plan and cross section were decided with consideration for the proportion of ceiling heights and audience seat widths. The main reflective surfaces, the acoustic reflectors and the side walls of the seating area are finished with brick, rigid enough for low-frequency reflection, and have appropriate surface roughness. To enhance sound diffusion, several types of bricks were used in an array of stacking methods. In the main hall, a continuous eave-like reflective surface stretches from the stage to the audience seats to further increase reflective sounds. Rectangular and flat, the event hall also features uneven wall brickwork to prevent flutter echoes.
▽使用数种砖块进行多种方式砌筑的礼堂 An auditorium built in a variety of ways using several types of bricks
考虑到大、小礼堂之间可能存在一方产生大音量声音的同时另一方需要安静环境的情况，我们通过小礼堂周围的伸缩缝和小礼堂的防振隔音结构实现了高性能隔音。小礼堂墙面上的饰面砖也具有防振隔音的功能。为了使活动礼堂与入口大厅形成一体化空间，通过移动隔墙和出入门将１层处的大开口做成双层样式，２层的玻璃面采用15mm＋15mm的夹层玻璃以确保隔音性能。位于大礼堂斜下方的排练室采用了防振隔音结构。
By using a vibration/sound insulation structure and expansion joints around the small hall perimeter, high sound insulation performance was achieved between the large and small hall venues, where both loud noise and silence are expected. The walls of the small hall are brick-finished, which affords sound and vibration insulation. In the event hall, where the large first floor opening allows for integration with the entrance lobby, a double layer of moving partition walls and entry/exit doors provides ample soundproofing. On the second floor, sound insulation is accomplished with 15mm + 15mm laminated glass. The rehearsal room, located diagonal to and below the main hall, employs a sound and vibration isolation structure.
针对大礼堂所采用的辐射板，在设计和施工的各个阶段都对其杂音防治措施反复进行了测试和研讨，以确保即使在大音量音乐扩音时也不会产生杂音。
The main hall radiator panels were installed after careful testing and examination at each stage of design and construction to ensure against vibration clatter, even in the presence of loud music.
▽平面图 Plan
▽入口剖面图 Section
项目名称：枚方市综合文化艺术中心
所在地：日本大阪府枚方市新町二丁目1-60
主要用途：剧场
用地面积（m²）：13,146.62㎡
建筑面积（m²）：14,383.75㎡
层数：地下1层、地上5层、阁楼1层
檐口高度/最高高度（m）：檐口高度28.2m、最高高度29m
主体结构：钢筋混凝土结构、部分钢骨钢筋混凝土结构、钢结构
竣工年月：2021年5月
业主：枚方市
施工会社：前田建设工业
照片来源：伊藤彰[AIFOTO]
Project name：Hirakata Performing & Visual Arts Center
Location (prefecture, city)：Osaka Prefecture, Hirakata City
Purpose：Theater
Site area（m²）：13,146.62
Total floor area（m²）：14,383.75
Number of floors：One below ground, five above-ground, one penthouse level
Eave height/maximum height (m) Eave height: 28.2 m/ Maximum height: 29 m
Main structure：Reinforced concrete, partially steel-framed reinforced concrete, steel
Completion：May 2021
Client name：Hirakata City
Lead architect：Nikken Sekkei Ltd
Main scope：Concept design, design development, construction administration
Construction company MAEDA CORPORATION
Photography credit Akira Ito, aifoto
“ 一个“文化艺术聚集地”和“盎然绿意”交织的空间。”
审稿编辑：Maggie
更多 Read more about： 日建设计
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