架构师提供的文本描述。AZL养恤基金总部是现有办公楼的延伸，该办公楼可追溯到20世纪40年代，位于荷兰赫伦市中心。现有的结构被保留下来-违背原意-因为它具有历史和文化意义，这在很大程度上归功于该地区19世纪末蓬勃发展的煤炭采矿业。修复和增加使用了一个严酷和约束的材料调色板，依靠混凝土，黑色钢和黑色比奇木。

Text description provided by the architects. The AZL Pension Fund Headquarters is an extension to an existing office building dating from the 1940s, in the center of Heerlen, the Netherlands. The existing structure was retained–against original desires–for its historic and cultural significance, largely owed to the region’s flourishing late 19th century coal mining industry. The restoration and addition makes use of a stark and restrained material palette, relying on concrete, black steel and black Birchwood.

 © Jan Bitter

(扬·斯泰特)

新建筑物的地点连接两条不同的街道，因此有两种不同的通道。新计划要求有230个工作场所、23个私人办公室、各种开放的规划和小组区域、一个会议室、咖啡厅、停车场和花园。指导项目发展的概念主题是“插入”或“嫁接”的想法，后者是公司活动的关键组成部分，成为进入项目复杂方案和现场条件的直接概念路线。实际上，新的建筑组件实际上是插入到现有的现场情况中。垂直延伸连接在建筑物的后面，并“插入”到现有的单位。相反，该网站的汽车交通模式是对这一概念的逆转，从街道上移除，降低到等级以下。

The site of the new building connects two different streets and therefore has two different means of access. The new program called for 230 workplaces, 23 private offices and a variety of open-plan and group areas, a conference room, café, car park and garden. The conceptual theme that governed the project’s development was the idea of ‘inserting’ or ‘grafting’, the later being a key component of the firm’s activities, becoming the direct conceptual route into the project’s complex program and site conditions. In effect, the new building components were literally inserted into the existing site situation. Perpendicular extensions were attached to the rear side of the buildings, and ‘plugged’ into the existing units. Conversely, the site’s automobile traffic pattern is a reversal of this concept; removed from the street and lowered below grade.

主要的添加物被安置在拉长的体积中，包括用混凝土和不锈钢包覆的薄板坯体积。这些书彼此挂在一起，上面有一个巨大的直线空间，是从地面上雕刻出来的。这种漂浮效应提供了一种失重的感觉，同时也是一种节能的双层膜。凿成的地面延伸到两座现有建筑之间的空间，将以前的场地条件和新建的建筑结合起来。雕刻的卷作为一个几何调整装置，容纳整个复杂的微妙-错位的街道，确定了AZL养恤基金总部所在地。

The major additions are housed in the elongated volume, consisting of thin slab volumes clad in concrete and stainless steel. These volumes hang upon one another, and above a large lineal space carved from the ground. This floating effect provides a perception of weightlessness, at the same time doubling as an energy saving double-membrane. The hewn ground extends into the space between the two existing buildings, combining the former site condition with the newly created one. The carved volumes work as a geometry-adjusting device, accommodating the entire complex to the subtle-misalignment of the streets that define the site of the AZL Pension Fund Headquarters.

 © Jan Bitter

(扬·斯泰特)