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浜松岩田信用金库总部・总行丨日本静冈丨日建设计

2025/12/21 11:59:14

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通过坚实的工作场所营造家庭氛围，加速决策

Fostering a sense of family and accelerating decision-making though a robust workplace

浜松岩田信用金库扎根于历史悠久的城下町，横跨面向城市象征浜松城的两块用地，实现了总部与总行两栋建筑的改建计划。

his redevelopment plan for two buildings – the head office and main branch – spans two sites facing the town’s symbolic Hamamatsu Castle. It was brought to fruition by hinkin ank (credit union) with deep roots in this historic castle town.

▼项目概览，Aerial-view of the project © Fumito Suzuki

日建设计自2011年起参与该金库分行的设计，与信用金库共同打造了重视与地区联系的个性化服务网点。为整合这些分支机构并创造新的服务，我们与金库管理层反复探讨了总部工作场所的理想形态。结果表明，需要实现“决策速度”，以及在“部门负责人之间、部门内部、职员之间”这三个层级上“营造出家庭般的氛围”。

Nikken Sekkei has been involved in designing distinctive service hubs for the credit union’s branches since 2011, prioritizing the institution’s connection with the community. Extensive discussions were held with the credit union’s officers and staff to determine how the new headquarters workplace should look in order to unify the branches and foster new services. The outcome identified two key requirements: accelerating decision-making and fostering a sense of family across three hierarchical levels: 1) between department heads, 2) within departments, 3) and among staff.

▼立面细部，Facade details © Fumito Suzuki

作为解决方案，我们提出了一个对日本传统建筑进行现代化诠释的工作场所：以类似檐廊的过渡区域环绕居住空间，居住空间则用隔扇、拉门等可灵活变化的隔断进行松散分隔。

As a solution, we proposed a workplace based on a modern interpretation of traditional Japanese architecture: an intermediate space, akin to an engawa (veranda) that wraps around the living areas, softly partitioned by flexible dividers such as fusuma (sliding doors) and shoji (sliding screens).

▼入口，Entrance © Fumito Suzuki

我们打破“办公室=无柱大跨度结构”的盲目信仰，将外围立柱偏移5ｍ，实现了在结构上解放外围区域的嵌套状平面布局。将作为内外部过渡区域的外围区域视为“檐廊”，将被檐廊包围的内部区域视为“起居室”，由此营造出环境各异的场所，从而为工作场所提供了多样化的选择。起居室通过凹凸式吊顶和移动式搁板架进行松散分隔。由于公司管理层和员工之间的心理距离较近，部门内沟通活跃，因此决定打造一个包含专务以下管理层在内、所有员工齐聚一堂、无等级之分的工作场所。

▼办公区轴测图，Axon diagram of head office © 日建设计

The prior-held belief that ‘the office = a column-free long-span structure’ was challenged. Offsetting the perimeter columns by five meters created a nested plan that structurally liberated the perimeter. The perimeter zone, which serves as a buffer between the exterior and interior, was designed to resemble a veranda. The enclosed interior zone (living room) yields spaces with distinct environments that offer variety in workplace. The living room is softly partitioned by raised ceilings and movable shelving. This space can transform into a workplace where all staff, from new-hires to managing directors, can gather, reflecting the company culture of psychological closeness among staff and vigorous interdepartmental communication.

▼无等级之分的工作场所，Interdepartmental communication © Fumito Suzuki

连接上下层的檐廊留有超过5m的充裕空间，不仅可用于移动，还可供人伫立和聚集，作为工作场所的一部分发挥作用，形成了一个容许外部环境影响、“不均匀”的温热环境、声环境和视觉环境。建筑外围覆盖着陶土百叶和与之呼应的木质百叶，在确保浜松城景观视野、控制日照和遮挡来自住宅区的视线的同时，营造出宛如漫步于天龙美林树木间的舒适感。在檐廊的一角，还设置了隐蔽又独立的洽谈空间“离室（离开主建筑的独立房间）”。▼百叶窗细部，Louver details © 日建设计

The generously proportioned veranda, spanning over five meters, connects the upper and lower floors, functioning for both movement and also as a workplace with areas for gathering and milling. This creates a thermal, acoustic, and visual environment with variations that allow for influences from the external surroundings. The building is enveloped by both terracotta and timber louvers that wrap the building perimeter allowing for views of Hamamatsu Castle while controlling solar radiation. This manages sightlines from the residential neighborhood and at the same time imparts the pleasant sensation of strolling through the city’s Tenryū Forest. “The Annex,” a secluded, detached meeting space, was also provided in one corner of the veranda.

▼隐蔽又独立的空间，A secluded, detached space © Fumito Suzuki

摒弃了追求不分使用者的均质性，积极看待差异性，打造以人为本的办公空间，从建筑骨架开始重新构思，最终形成了一个坚实的工作场所，且有望成为未来办公建筑的解决方案。

Rather than prioritizing uniformity for all users, the fundamental structure of the architecture was re-examined, creating a robust workplace centered on people that proactively embraces heterogeneity. This approach has yielded a solution for future office architecture.

▼交通空间，Transportation space © Fumito Suzuki

自然风格的环保建筑

Natural Environmental Architecture

虽然设计期间恰逢新冠疫情爆发，但鉴于金融机构特有的高度信息保密性，预计之后仍将以出勤为前提维持高在岗率的工作模式，因此潜热负荷处理与自然通风等被动式设计显得尤为重要。

Although the project’s design phase coincided with the onset of the COVID-19 pandemic, information confidentiality inherent to financial institutions meant that a high worker occupancy rate was anticipated. This made passive design elements, such as latent heat load management and natural ventilation crucial. In this project, the sensible/latent heat separation air conditioning system utilizes a desiccant air handler to harness abundant well-water along with solar heat, in a region with one of the longest yearly periods of sunshine in Japan. Utilizing an existing well resulted in a 46.5% groundwater substitution rate for total water usage, balancing energy savings with reduced strain on public infrastructure.

▼大堂， Lobby © Fumito Suzuki

▼循环分析， Circulation diagram © Fumito Suzuki

Sliding windows were installed on the exterior. The upper part of the atrium was fitted with a natural ventilation system featuring a wind- and temperature-sensitive automatic opening-and-closing mechanism. Eco-lamps that promote natural ventilation were installed, enabling staff to actively participate in and enjoy the richness of nature. The exterior louvers gradually change angle to moderate prevailing winds during transitional seasons, and direct gentle breezes to the interior.

▼办公空间， Head office © Fumito Suzuki

外立面设置推拉窗，并在挑空上部采用根据风力和室内外温差自动开关的自然通风系统。同时还设置促进自然通风的环保指示灯，引入了通过管理层的亲自参与得以享受丰富大自然的手法。角度渐变的外装百叶，既能适度调节过渡季节的盛行风，又能将柔和微风引入室内。通过在外周两侧采用悬臂梁挑出，形成平衡玩具状的结构形式，将外围立柱偏移5m，实现了适宜的跨度。这样一来，地下基坑的平面尺寸得以缩小，同时还减少了钢结构用量及地下开挖和主体结构的工程量。通过健全性调查，将既有地下结构体作为主体结构加以利用，从而减少了因拆除而产生的建筑废弃物。这有助于将占前期碳排放约四成的结构相关CO2排放量削减14%，为降低环境负荷做出了贡献。

A seesaw-like structural form is balanced by cantilevered beams that extend from both sides of the perimeter. This allows the outer perimeter columns to be offset by an optimal five-meter span. This results in a smaller underground foundation footprint, reducing steel usage, excavation volume and structural mass. Demolition waste was also minimized by conducting soundness surveys and utilizing the existing underground structure as the main framework. These measures contributed to a 14% reduction in structural CO2 emissions and approximately a 40% reduction in upfront carbon emissions, thereby lowering the project’s environmental impact.

▼会议空间，Meeting Space © Fumito Suzuki

通过无柱无梁的通透挑空空间营造出“户外感”，从而有效降低对温热环境的不满意率。利用这种心理容忍度的变化，放宽对外围区域空调负荷处理能力的要求，制定了允许温度不均匀、不过度强求的设备方案。我们追求的并非依赖技术革新、以某种“强求”为前提的建筑，而是顺应自然法则、善用现有资源的自然风格的环保建筑。

By creating an open atrium-like area unencumbered by columns or beams, a sense of openness and connection to the outdoors is achieved, enhancing comfort and improving the overall thermal experience. This change in psychological tolerance eases the load on the HVAC system, enabling a more flexible equipment plan that is tolerant of temperature variations. Rather than relying on technological innovation or making assumptions about what can be compromised, we pursued an environmental architecture that respects natural principles while utilizing existing conditions and materials.

▼顶层露台， Rooftop terrace © Fumito Suzuki

“不均匀”孕育出的宽舒世界

A Generous World Created by “Variation”

为了打造一个让使用者产生归属感、心境丰盈且富有包容性与人情味的办公空间，团队设计了与工业化、现代化的均质性相悖的“不均匀”建筑。采用陶土和木材等天然材料，通过改变质感、角度、厚度和长度来产生阴影，赋予空间厚重感与温暖感。例如，外立面的陶土上，除了因烧制温度变化产生的自然色差外，还设计了粗面、凹面和筋纹面三种表面形态，并通过包括接缝位置在内的随机布局强化了明暗对比。木材采用实木以凸显其本身的纹理，通过旋转安装角度、组合多种构件尺寸等手法，营造出随视角变化而呈现不同风貌的空间。

In order to create an office that fosters affection and enriches the spirit — a space imbued with tolerance and humanity — we designed architecture featuring “variation” to contrast with industrial and modern uniformity. Natural materials like terracotta and wood were employed of varying textures, angles, thicknesses, and lengths to create shadows, lending space depth and warmth. For example, the exterior terracotta has three surface patterns (rough, concave, and grooved), along with natural “firing” variations caused by temperature fluctuations. These patterns were randomly arranged, including the positioning of joints, to emphasize shadow play. Solid wood was used to highlight inherent material character. Rotating installation angles and combining multiple member sizes yields a space whose appearance shifts depending on the viewing angle.

▼空中廊道，Connecting corridor © Fumito Suzuki

▼夜览，Nightview © Fumito Suzuki

通过认可不均匀性，使人们不再介意颜色不均、污渍和尺寸偏差，同时也通过提高成品率为减少废弃物做出了贡献。正如每个人都有自己的个性一样，我们旨在打造一个将不均匀和参差变为独特韵味、整体上和谐宽舒的建筑。

Embracing heterogeneity makes color variations, stains and dimensional irregularities, etc. become less noticeable. The improved material yield contributes to waste reduction. Just as each person has individuality, the aim was to create a generous architecture where variations and inconsistencies are perceived as characteristics that come together in harmony.

▼首层平面图，Ground floor plan © 日建设计