Changzhou High Speed Railway New Town, located in Changzhou National High tech Zone, is a key development area in Changzhou’s “14th five year plan”. Focusing on the overall positioning of “new urban center, new pivot of central axis, new industrial highland and smart ecological city”, it will build a green development demonstration zone of the Yangtze River economic belt.
opportunities and challenges
The “Xinlong headquarters economic zone” where the project is located is composed of five 100-meter towers and their podiums. According to the principle of “unified planning and land transfer”, three of the five towers have been built and developed by three different industries when we were involved in the project. At this time, the architect is actually given a “proposition composition”. How to “sew” the five independent plots into a whole through reasonable planning and design, so as to create a “business card” representing the region?
▼项目与周边环境概览，overall of the project and surrounding environment ©夏木工作室
“Our mission is to use design to empower the whole plot and make it an organic part of urban space, not just to add two buildings”. When Jane and the architectural design team first thought about the design, they took into account the communities around the plot. “The whole area should be separated by people and vehicles. An overhead gray space for people to stop is formed on the ground floor to increase the accessibility of the plot and form an open large garden inside. At the same time, the new basement should consider connecting all the other three basement to reduce the number of new ramps.” The design team first solves the integrity of the plot from the perspective of urban design.
▼体块生成，Generate analysis ©简和建筑设计事务所有限公司
“We do not add, but multiply. After finding out the molecules, we determine the maximum common divisor”. For the park with three facade styles, how can the two new buildings be “embedded” into the current situation and bring a new look to the park at the same time? The design team used the method of decoding first and then coding, refined the facade elements of the current three buildings, and then interpreted this design element with new methods. The overall appearance should be overall and full of changes. Through the “darning” of new buildings, the facade styles of new and old buildings complement each other to form a unified whole.
▼立面模数分析，Facade modulus analysis ©简和建筑设计事务所有限公司
Lvchuang building is located in the southeast corner of the headquarters economic zone. It is also the only building in the region that can be seen from the North Station of high-speed railway. It has become a “window” to show the whole headquarters economic zone. The building itself has a limitation (dilemma), that is, when the floor area ratio is 3.5, it can only be about 80m normally. The customer wants the visual height to be 100 meters as far as possible. Between limitations and challenges, we must come up with unconventional ideas to solve problems.
▼外观概览，overall of the project ©夏木工作室
▼空中花园分析图， analysis diagram of “raising the atrium and sky garden” ©简和建筑设计事务所有限公司
The key to breaking the game is to increase the floors as much as possible without increasing the construction area, so “raising the atrium and sky garden” has become the winner and loser of the problem-solving and one of the biggest highlights of the building. Taking out 1 / 4 of each floor as a raised space is a loss to the occupancy rate of office space, which is why a large number of business office buildings still adopt the traditional “large flat floor” method. The owner can allow the designer to take such a risky way, but also after careful customer portrait.
▼“垂直花园式企业总部”，”vertical garden type enterprise headquarters” ©夏木工作室
▼三层挑高的“企业客厅”，Each enterprise has its own three-story “enterprise living room” ©夏木工作室
Lvchuang building puts forward the concept of “vertical garden type enterprise headquarters”. There is an enterprise on every three floors, covering an area of about 4000 square meters. Each enterprise has its own three-story “enterprise living room” and outdoor air courtyard. In the same enterprise, the communication between the upper and lower floors is particularly important. The shared space provides a scene for employees to communicate, rest and gather, and has also become the best “display space” of the enterprise. The location of the outdoor garden is determined according to the relationship between the building and the city. The outdoor garden facing the East and south is higher, which can look out at Xinlong lake and North high-speed railway station, and the garden facing the West and north is lower, which can see the internal square. The indoor atrium is concentrated in the lower value space on the West and north sides.
▼裙楼屋顶花园，roof garden of the podium ©夏木工作室
high degree of reduction
The vertical decorative aluminum plate with three floors and one section is used in the facade design of the tower of Lvchuang building, which weakens the horizontal lines and strengthens the vertical lines in the design, making the tower straighter. The decorative aluminum plate is composed of 600×200 aluminum plate with parallel glass surface and 70×450 decorative lines protruding from the aluminum plate surface, which increases the sense of hierarchy of two quadrants. The vertical lines form “fluctuation” according to the position of the hanging garden, breaking the certainty of the facade and changing in unity. The vertical decorative lines protruding from the glass surface are important functional components in addition to providing a sense of visual depth.
▼塔楼立面设计采用三层一段的竖向装饰铝板， three floors and one section is used in the facade design of the tower ©夏木工作室
▼东立面， east facade ©夏木工作室
▼幕墙节点，analysis of the curtain wall ©简和建筑设计事务所有限公司
Perforated plates are set on the side of the line and hidden open window sashes are set on the back to provide sufficient natural ventilation for the office space without affecting the overall sense of the facade. It is proposed to introduce a bank into the podium. The owner hopes to use the stone facade to highlight the “sense of stability” of the base and unify with the surrounding architectural podium elements. In the selection of materials, the designer compared and selected the collocation of different materials and the visual effects in different weather before finally determining the scheme.
▼底部裙楼，surrounding architectural podium elements ©夏木工作室
▼石材立面，突出基座的“稳重感”，the stone facade with the “sense of stability” ©夏木工作室
Lvchuang building adopts the “EPC mode of design, procurement and construction led by scheme design”. In the scheme design stage, it is necessary to pre design a special design, control the main materials and brands that determine the cost, and assist the owner in preparing the bid. If there are missing items in the design process, the depth is insufficient, or the description of main materials is not detailed enough, the construction unit will often have an opportunity to take advantage of it.
▼由江面看建筑，viewing the project from the water ©夏木工作室
In general, the EPC project puts forward higher requirements for the level of the design team. At the same time, it exercises the right of “acting for party a” during the construction process, and plays frequent games with the construction unit to improve the selection of materials within the scope of controllable cost. For example, in the process of construction, one of several suspended curtain walls in the sky garden is 12 meters long, which is bent in the process of stacking, storage and hoisting. At the insistence of the architect and the owner, the construction team disassembled the installed vertical brace and returned it to the factory for processing, so as to finally ensure the perfect presentation of the effect.
▼立面灯光设计，Facade lighting design ©夏木工作室
▼外观细部， exterior detail ©夏木工作室
In the design of Lvchuang building, “vertical garden enterprise headquarters” is Jianhe’s exploration of humanized office mode, pursuing the integration of office space and life scene. Based on the architectural specialty, the integrated design mode runs through the whole, and fully communicates and integrates with interior, landscape, curtain wall and other specialties, which brings extremely rare integrity to the final completion effect.
▼室内概览，overall of interior ©夏木工作室
▼接待大厅，reception hall ©夏木工作室
After the completion of Lvchuang building in 2021, it has been highly praised by Party A with its ultra-high degree of reduction and unique space design. The differentiated product positioning has won the favor of customers for the project. Lvchuang building redefines the “vertical garden enterprise headquarters”, which is the innovative practice of Jianhe design on office products. In the high-speed railway station where people come and go, and against the light of Xinlong lake, the new generation of enterprise headquarters creates a warmer office scene and a more soul sharing space for employees.
▼夜景，night view ©夏木工作室
▼总平面图，master plan ©简和建筑设计事务所有限公司
▼底层平面图，ground floor plan ©简和建筑设计事务所有限公司
Project name：Lvchuang building, Changzhou Headquarters Economic Zone
Design year & Completion Year：2018.04 / 2021.06
Leader designer & Team：Danni Zou, Ping Sun, Yujing Liu, Qiushan Lin, Chi Zhang, Jinlei LU, Bin Ma, Meiling Chen, Ni Su
Project location：Intersection of Chongyi road and Xinjing street,
Xinbei District, Changzhou City, Jiangsu Province
Gross Built Area：40000 ㎡
Photo credits：Xia Mu studio
Clients：Changzhou Lvzhi Investment Development Co., Ltd