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Located on Lize Road in southwest Beijing, “Leeza SOHO Tower” anchors the new Fengtai business district – a growing financial and transport hub between the city centre and the recently opened Beijing Daxing International Airport to the south. The new business district is integral to Beijing’s multi-modal urban plan to accommodate growth without impacting existing infrastructure networks in the centre of the city.
This 45-storey 172,800m² tower responds to demand from small and medium-sized businesses in Beijing for flexible and efficient Grade A office space.
Adjacent to the business district’s rail
station at the intersection of five new lines currently under
construction on Beijing’s Subway network, Leeza SOHO’s site is
diagonally dissected by an underground subway service tunnel.
Straddling this tunnel, the tower’s
design divides its volume into two halves enclosed by a single facade
shell. The emerging space between these two halves extends the full
height of the tower, creating the world’s tallest atrium
at 194.15m which rotates through the building as the tower rises to
realign the upper floors with Lize road to the north.
This rotation of the atrium intertwines
Leeza SOHO’s two halves in a dynamic ‘pas de deux’ with connecting
skybridges on levels 13, 24, 35 and 45; its glaced facade giving
panoramic views across the city.
Leeza SOHO’s atrium acts as a public
square for the new business district, linking all spaces within the
tower and providing varying views due to its twisting, sculptural form;
creating a fantastic new civic space for Beijing
that is directly connected to the city’s transport network.
The atrium brings natural light deep
within the building, acting as a thermal chimney with an integrated
ventilation system that maintains positive pressure at low level to
limit air ingress and provides an effective clean air
filtration process within the tower’s internal environment.
Leeza SOHO’s double-insulated, unitised
glass curtain wall system steps the glazing units on each floor at an
angle, providing narrow ventilating registers to draw outside air
through operable cavities where required; creating
extremely efficient environmental control for each floor.
The two halves of the tower shade the
atrium’s public spaces, while the double-insulated low-e glazing
maintains a comfortable indoor environment in Beijing’s extreme weather
conditions. With a u-value of 2.0 W/m²K, the glazing
has a shading coefficient of 0.4. The tower’s overall external envelope
u-value is 0.55 W/m²K.
At the forefront of 3D Building
Information Modelling (BIM) in design, construction management and
building operations, Zaha Hadid Architects and SOHO China have
implemented proven technologies to reduce the energy consumption
and emissions at each of their four collaborations, totalling 15
million square feet (1.4 million sq. m) of mixed-use urban space in
Beijing and Shanghai.
Designed to achieve LEED Gold
certification by the US Green Building Council, Leeza SOHO’s advanced 3D
BIM energy management system monitors real-time environmental control
and energy efficiency. These systems also include heat
recovery from exhaust air and high-efficiency pumps, fans, chillers
boilers, lighting and controls. The tower incorporates water-collection,
low-flow rate fixtures and grey water flushing as well as an insulating
green roof with photovoltaic array to harvest
solar energy.
2,680 bicycle parking spaces, with
lockers, shower facilities and dedicated charging spaces for electric
and hybrid cars are located below ground; while low volatile organic
compound materials are installed throughout Leeza SOHO
to minimise interior pollutants and high efficiency filters remove
particulates via the air-handling system.
Project Data
Top of façade: 199.99 m
Top of atrium: 194.15 m
Standard floor to floor height: 4.1 m
Number of floors: 45 floors above ground, 4 floors below ground
Site area: 14,365 m²
Gross floor area: 172,800 m²
Project Start Date: October 2013
Siteworks Start Date: April 2015
Completion Date: 19 November 2019
Source : Zaha Hadid Architects (ZHA)