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dhk Architects：已经竣工的35 Lower Long办公大楼位于南非开普敦，共86米高，由玻璃幕墙覆盖，形态优雅。该项目有望激发该地区新兴金融和服务行业的活力。建筑由Abland Property Developers开发，dhk Architects设计，它就像一个巨大而独特的雕塑体块，通过玻璃窗开关实现立面动态变换效果，上部办公楼层和下部停车楼层之间的玻璃幕墙无缝衔接。
dhk Architects：35 Lower Long, an elegant 86-metre glass-clad office tower, has recently been completed which will invigorate Cape Town’s emerging financial and hospitality district. The building, developed by Abland Property Developers and designed by dhk Architects, is characterised by a singular sculpted massing which is transformed via dynamic glazed planes that extend seamlessly over the office and parking levels.
The two main corners of the building are chamfered towards the roofline and soar upwards, forming a striking wing-like effect – resulting in a distinctive, non-orthogonal addition to Cape Town’s skyline.
The site is located in Roggebaai (Cape Town’s growing financial and hospitality precinct) and was previously occupied by an eight-storey 1980s office building which prior to that was part of the now-demolished Long Street Power Station site. While the peninsula site has three street frontages and the public domain experiences high levels of pedestrian traffic, it previously suffered from extremely limited street activation. This was compounded by the last remaining portion of the demolished power station (Site B), hostile frontages of both the 80-metre office building to the south and dilapidated office building to the east. A fundamental component of the design concept involved maximising the activation of the street edge with retail to improve the quality and safety of the public realm, as well as to take advantage of the high levels of pedestrian traffic passing the building.
The initial brief to remodel and extend the existing 1980s building were discarded due to impractical core design, the limitations of adding floors, the need to replace an outdated façade and challenges with long-term viability. The revised brief, by the co-owners Ellerine Bros and Abland, was to offer a more positive medium- to long-term viability, as well as to enhance Cape Town’s skyline with a decidedly taller, inspirational tower building. However, the challenge was to maximise the quality multi-tenant commercial space while accommodating core components such as lifts and stairs along with structured basement parking – all within a relatively small floor plate.
To maximise the floor plates, dhk proposed a simple singular orthogonal massing bar for the articulation of the southeastern and southwestern corners. While fundamentally a solid building mass, the appearance of a dynamic, non-orthogonal sculpted mass was created via tapering or cranked façade planes which extend seamlessly over the office and parking levels.
This was achieved by chamfering both the southeast and southwest corners of the building at the top of the orthogonal parking base and widening them towards the roof. The technique articulates the façade and defragments the solidity of the corners of the building as the wings shape the elevations and extend past the top office floor. By extending the wing-shaped façade screens beyond the roof level with parapet sloping, the appearance of soaring shards is created as opposed to an abrupt utilitarian termination.
In terms of materiality, a glazed façade was selected due to its flush and sculpted reflective form which is able to conceal both the parking levels and solid spandrels. Not only does glass facilitate an exciting play of light but it allows for an expressive articulation of the building mass in the screen and shard-like elements. The introduction of pixilation on the portions fronting the parking levels, ceiling voids, structure and internal desk height upstands allows the building to conceal both the parking levels and avoid overbearing horizontal bands.
The entire length of the street frontage along Lower Long Street and Jetty Street is enlivened with new ground-floor retail and multiple entry points into the office building.
At street level, a double-volume entrance connects to shuttle lifts connecting all parking levels and the ground floor to a spectacular arrival experience within the 10th-floor sky lobby. Thereafter, individuals are transported via a double-volume area and terrace to the office lifts which connects to all the floors above. This ensures mid-building activation and an experience for all users to enjoy as part of the arrival journey into the workspaces – encouraging interaction between different tenants.
Internally, the building offers expansive 360-degree views over the city, ocean and mountains. The glazed façade allows for floor-to-ceiling unencumbered vistas enhanced by glazing with mullions at 2.4-metre-wide centres. The chamfered corners also offer oblique views which facilitate the appreciation of the architectural form both externally and internally – a desirable design aspect often not apparent in tall buildings. Furthermore, the multi-purpose roof area with terraces above both chamfered corners offers a spectacular city entertainment space and signifies high-level activation. From an external viewpoint, the perimeter desk height upstands provide ease of furnishing right against the perimeter with fire separation between the floors, therefore, the office furniture is concealed when viewed externally.
The immediate neighbour to the north and sharing a common boundary is a nine-storey 1980s building that has the potential to be redeveloped in the future. Rather than merely providing an unsightly blank common boundary façade, dhk articulated both northern corners by returning the glazing around onto the common boundary. This is sacrificial in the sense that the neighbour could in future build higher against the common boundary. It also offers spectacular corner northern views of Cape Town’s harbour. The solid wall concealing the stair core is pixelated with coloured plastered panels, echoing the glazed façade’s articulation.
总的来说，35 Lower Long为开普敦的天际线增添了非常需要的当代元素，为周围的城市景观做出了积极贡献。dhk合伙人兼项目首席建筑师Pierre Swanepoel表示:“35 Lower Long建筑造型优美，立面高耸，既满足了客户需求，又符合设计标准。我们非常自豪，它将会是开普敦CBD未来发展的催化剂。”
Fortunately, the client championed environmental sustainability. To achieve a 4-Star GBCSA Design rating, a detailed environmental performance modelling study was undertaken. This required a high-performance double-glazed specification with increased internal cill height raised to desk height – to reduce both solar gain and radiant heat which significantly lowered HVAC requirements. Other environmental considerations included building efficiency, choice of materials, energy-efficient lighting and services, lower parking ratio encouraging the use of public transport, as well as showers and bicycle parking facilities.
Overall, 35 Lower Long is a much-needed contemporary addition to Cape Town’s skyline which positively contributes to its surrounding cityscape. Pierre Swanepoel, dhk partner and lead architect on the project, says “With its sleek, sculpted form and soaring-shaped facade, 35 Lower Long is an exemplar of how client requirements can be met without comprising on design standards. dhk is extremely proud of this building and views it as a catalyst for future developments to come in Cape Town’s CBD”.
项目名称：35 Lower Long办公大楼
MEP工程: Eckon + Converge Consulting
主要施工: Stabilid Cape Construction
室内设计: Entrance & Office Lobby Areas
开发商：Ellerine Bros + Abland Property Developers
Project team: 35 Lower Long
Address：Cape Town, South Africa
Architects: dhk Architects
Structural Engineers: Aurecon
MEP Engineers: Eckon + Converge Consulting
Main Contractors: Stabilid Cape Construction
Interior designers: Entrance & Office Lobby Areas
Owner/Developer: Ellerine Bros + Abland Property Developers
更多 Read more about: dhk Architects