立面的改造主要是在每一层层间的内侧添加了一道幕墙，以降低能耗。 外立面的承重幕墙和窗槛墙予以保留，唯一改变的就是安装了防撞玻璃。 新添加的内侧幕墙窗户可以通过手动开启， 达到自然通风的效果。 遮阳系统安装在内外幕墙之间，即可以达到保温的目的， 又保持了原本的经典外观，即令人熟悉的遮阳板开关错落的印象。
The curtain wall façade was made energy-efficient by the addition of a new internal primary façade to the offices on each storey. The external load-bearing façade including the spandrels were left in their original state, the only change was to install impact-glazing. The windows of the primary façade can be opened manually to enable draught-free ventilation of the offices. The sunshades fitted between the two skins of the façade also offer thermal protection and even appear to be on the outside, such that, from a distance, the building appears unchanged; the familiar sight with its opened and closed sunshades remains.
大楼侧面原本采用不锈钢包边，经久耐用，经过清洁后仍然崭新。
Due to the durability of the original material, the stainless steel cladding on the sides of the building was cleaned and retained.
其余的改造工作，一项主要的内容就是更新了楼宇管理系统与服务和消防安全系统。 原来的系统因为过于分散而多占用了大约1200平米的使用面积。 多亏安装了大量的防火卷帘和增添了一个紧急出口，才使大堂可以维持原状。
In addition to the works to the façade, a major achievement was the renewal of the building management systems and services and the fire safety system. The former were decentralised resulting in an additional 1,200 m2 of usable space. Thanks to the installation of a number of fire curtains and the provision of an additional emergency exit, the listed foyer was retained in its original condition.
办公大楼平面也做了优化以便使得出租面积更为灵活多变， 经过优化后每层可分割成2个以上的出租单元。租户可以自行按各自风格来进行内部装修，许多租户都选择与大楼本身的风格保持一致，即采用墨绿色的大理石地板和不锈钢包裹核心筒。
The office floors were modernised in order to create a flexible letting concept; up to two units per storey can now be achieved. The design and fit-out of the interiors was determined by the tenants, a number of whom opted to make reference to the building itself, choosing dark green marble floors or stainless steel cladding to the service core.
大楼底层和地下停车也按要求进行了改造， 目前大楼的地下停车库直接与市级的地下通道连接。 此外楼顶还新添加了两个露台。
Further refurbishment works were required to the lower ground floors and the underground car park, which now connects directly to the municipal tunnel system. Two new terraces have also been added to the roofs of the external slices of the building.
项目信息
名称: 三片楼翻新
业主: 三片楼有限公司（MOMENI集团和黑马投资公司联合体)
租户: Incl. Allen & Overy, alltours, A.T. Kearney, Black Horse Investments, Cadman, Gleiss Lutz, Jones Lang LaSalle, Latham & Watkins, Roland Berger
位置: 杜塞尔多夫
总建筑面积: 35,000 m2
工位: 约 1,200
建成: 1960
翻新: 2012 - 2014/15
楼层: 地上26 层， 地下3层
高度: 96 米
绿建标准: LEED金奖标准
设计: HPP Architects, Düsseldorf Studio
主创: Joachim H. Faust
项目合伙人: Claudia Roggenkämper
项目负责人: Karl Heinz Wolff
团队: Fritz Altland, Sema Arda-al-Salahi, Detlev Armeloh, Ugur Aybirdi, Erwin Drese, Anika, Kessel, Markus Leiting, Heike Pauckert-Noelte, Florentine Struss, Marion Weiler
Project Data
Project Name: Dreischeibenhaus Refurbishment
Client: Dreischeibenhaus GmbH & Co. KG
(a joint venture of the MOMENI Group
and Black Horse Investments)
Tenants: Incl. Allen & Overy, alltours, A.T. Kearney, Black Horse Investments, Cadman, Gleiss Lutz, Jones Lang LaSalle, Latham & Watkins, Roland Berger
Location: Düsseldorf
GFA: 35,000 m2
Work places: approx. 1,200
Year of construction: 1960
Refurbishment: 2012 - 2014/15
Storeys: 26 above-ground, 3 below-ground
Height: 96 metres
Green Building: aiming for LEED Gold
Planning: HPP Architects, Düsseldorf Studio
Partner: Joachim H. Faust
Project Partner: Claudia Roggenkämper
Project Leader: Karl Heinz Wolff
Team: Fritz Altland, Sema Arda-al-Salahi, Detlev Armeloh, Ugur Aybirdi, Erwin Drese, Anika, Kessel, Markus Leiting, Heike Pauckert-Noelte, Florentine Struss, Marion Weiler
About HPP
HPP is one of Germany‘s oldest and most successful Architectural Partnerships. Founded by Helmut Hentrich, the company celebrated its 80th anniversary in 2013 and is currently managed by the fourth generation of architects. From the very beginning, administrative and corporate headquarters for major German companies have been among the company’s most renowned projects. These include the headquarters for various insurance companies such as ERGO, Allianz and LVM. The most recently completed projects include the Vodafone Campus in Düsseldorf, the Clariant Innovation Centre in Frankfurt, the maxCologne offices including the Lanxess Tower in Cologne and the LVM 5 Tower in Münster.
HPP是德国最成功的合伙人制建筑事务所之一。由Helmut Hentrich先生创立至2013年已有80年的历史，目前由第四代建筑师管理。从公司建立初期起，最知名的项目就是德国主要的行政办公和企业总部。包括ERGO保险总部，安联保险和明斯特LVM7保险公司总部。最新完成的项目有杜塞尔多夫沃达丰办公园区，法兰克福娇韵诗研发中心，科隆朗盛大楼和明斯特LVM5保险大楼。
via：archcollege.com
