谁说旧建筑不节能？他们做到了扩建反而更省电

Photo credit: Franco Casaccia / JSWD

 

德国布吕尔市政厅与图书馆旨在扩建现有的市政厅，并对毗邻的Janshof广场进行整合设计。建于20世纪60年代的原附楼将被取代。

 

Photo credit: Schmitz.Reichard GmbH

 

 

设计面临的关键挑战在于如何将新建筑与历史悠久的市政厅衔接，并在严格遵守文物保护法规的前提下对其进行修缮。最终成果是一座无障碍、面向未来的市政厅，不仅满足最新的节能标准，还具备灵活的空间布局，通过整合不同功能实现协同效应。

 

Photo credit: Taufik Kenan

 

 

市政府的办公空间位于民政服务窗口（办公室及婚姻登记处）之上。

 

新建部分的所有楼层均设有市立图书馆，其中儿童图书馆位于地下层，并朝向一个阅读庭院开放。

 

Photo credit: Taufik Kenan

 

清晰的导视系统确保了市政厅空间易于辨识和使用。

 

新建门厅是连接新旧建筑与城市界面的核心节点，它面向步行街和已基本实现无车化的Janshof广场开放。访客可由此汇入经Markt广场进入历史市政厅的人流。

 

Photo credit: Taufik Kenan

 

 

新建筑的设计灵感源于布吕尔历史城区多样的城市空间与尺度。

 

其前部体量呼应了历史市政厅的轮廓与形态，形成了既具独特性又契合地域特征的整体造型。

 

Photo credit: Jens Kirchner

 

三个相互嵌套的体块顺应街道方向布置，其山墙立面朝向街道。

 

部分砖墙采用穿孔设计，使自然光柔和地渗入室内。

 

立面与屋顶统一使用浅色砖材，进一步强化了新建筑的几何体块感。

 

Photo credit: Christa Lachenmaier

 

 

项目致力于实现最大程度的可持续性，具体措施包括：

 

历史结构保护： 尽可能保留原有历史建筑的结构。

 

能源供应： 采用热电联产电厂提供能源和供暖。

 

节能设计： 综合运用三层玻璃窗、最大化自然采光、外部遮阳系统以及混凝土构件蓄能技术，有效降低整体能耗。

 

Photo credit: Franco Casaccia / JSWD

 

 

JSWD建筑事务所于2000年成立于德国科隆。自2021年起，其在德国柏林和美国坦帕增设了分支机构。目前，两位创始人——Olaf Drehsen 与 Frederik Jaspert，连同合伙人 Tobias Unterberg、Mario Pirwitz 和 Christian Mammel，共同领导着一个由来自30多个国家约240名员工组成的团队。

 

JSWD 在德国及欧洲已完成超过60个建筑项目，作品类型广泛，涵盖文化与活动建筑、住宅、办公、学校、医疗建筑，以及既有建筑的改造与功能更新。

 

Photo credit: Christa Lachenmaier

 

作为建筑和城市规划者，该事务所展现出对材料与设计的执着追求，并承担起可持续规划的责任。从项目构思伊始，他们便对项目的成功负责，并作为总规划方全程把控直至最终交付。通过与法国、西班牙、卢森堡和美国等国的建筑事务所合作，JSWD 能够汲取更多的建筑、技术和知识灵感，并在联合建设项目中高效协作。

 

概念与形式的清晰性贯穿于 JSWD 的所有项目，他们运用少量明确界定的元素，创造出独特的结构性与空间层次。同时，其每个设计都基于具体情境和反映使用者自我形象的诉求（企业办公建筑），塑造出其独特的身份。

 

Photo credit: Franco Casaccia / JSWD

 

The objective of the competition was to plan an extension for the existing town hall and to create a concept for adjacent Janshof square. The project involved replacing an extension that was built in the 1960s.

 

One particular challenge was connecting the new building to the historic town hall, and then renovating it in line with heritage requirements. The result is an accessible, future-oriented town hall that meets the latest energy standards, designed to enable flexible use and to tap into synergies by connecting various building functions.

 

Photo credit: Franco Casaccia / JSWD

 

The offices of the municipal authorities are located above the civil registry offices (Bürgeramt and Standesamt). The municipal library is spread across all floors of the new building, with a children's library in the basement that opens up to a reading courtyard. Clear signage makes the town hall easy to navigate. The new foyer opens up to both the pedestrian zone and the now largely car-free Janshof. From here, visitors' paths converge with those of pedestrians entering the historic building via Markt.

 

Photo credit: Franco Casaccia / JSWD

 

The new building plays with the idea of different urban spaces and proportions in Brühl's historic city center. The front building references the form of the historic town hall, creating a cubature that is at once unique and also typical of the region. The three interlocking structures are oriented so that their gables face the adjacent street, with brickwork partially perforated so that it filters the light coming into the underlying windows. The same light-colored bricks are used for the facade and the roof, thus reinforcing the cubic effect of the new building.

 

Photo credit: Franco Casaccia / JSWD

 

The project aims for the greatest possible sustainability. For example, the firm preserved as much of the historic building's fabric as possible. Energy and heat are supplied by a combined heat and power plant. In addition to triple-glazed windows, a great deal of natural light, and external solar protection, concrete component activation guarantees lower energy consumption.

 

Photo credit: Franco Casaccia / JSWD

 

JSWD is an architecture firm founded in Cologne, Germany in 2000. Since 2021, it has also had locations in Berlin, Germany, and Tampa, USA. Today, its two founders – Olaf Drehsen and Frederik Jaspert – along with partners Tobias Unterberg, Mario Pirwitz, and Christian Mammel, lead a team of around 240 employees from more than 30 countries.

 

With over 60 buildings completed in Germany and Europe, JSWD's portfolio boasts a wide range of projects, from cultural and event buildings, to residential buildings, offices, and schools, and from healthcare buildings to the conversion and repurposing of existing structures.

 

Photo credit: Franco Casaccia / JSWD

 

As an architect and urban planner, the firm demonstrates its passion for material and design and takes responsibility for sustainable planning. Starting from the initial idea, they assume responsibility for the success of every project and, as a general planner, guide each project all the way to the final handover. In cooperation with architecture firms in other countries, including France, Spain, Luxembourg, and the US, JSWD is able to find additional sources of architectural, technical, and intellectual inspiration and work together effectively on joint construction projects.

 The pursuit of conceptual and formal clarity runs through all of JSWD's construction projects like a common thread. Working with just a few clearly defined elements allows for unique structural and spatial hierarchies. At the same time, each design develops its own identity based on the details of the situation and the desire to reflect the self-image of the user in the form of corporate architecture.

 

Photo credit: Christa Lachenmaier

 

Program: New construction of the Library and Refurbishment of the old City Hall
Address: Steinweg 1, 50321 Brühl, Germany
Client: City of Brühl
Architecture: JSWD, 1st prize competition 2017
Completion: 2023
Structural design: Kempen Krause Ingenieure Aachen
Building service engineering: DEERNS
Library and interior planning: UKW Innenarchitekten, Krefeld
Landscape: RMPSL, Bonn

Site: 4,800 sqm
GFA: 5,200 sqm