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gad：The Landscape Tower is located in the Two Rivers Collaborative Innovation Zone of Chongqing. There are Mingyue Lake and Mingyue Mountain in the park, and a large number of buildings are arranged around Mingyue Lake, attracting many entrepreneurial workers to stay in it. The demand for providing park users with a panoramic view of mountains and rivers and a place to relax and unwind has emerged. We were commissioned by the business owner to build the tower at the designated location.
The landscape tower is located on a high hill by the side of Mingyue Lake: to the east, you can overlook the scenery of Mingyue Mountain, to the west, you can overlook the color of Mingyue Lake, and to the near, you can have a panoramic view of the park under construction. The landscape tower stands in the mountains and forests, and its independent, unique, and high position inevitably makes it a unique scenery in the park.
▽景观塔与周边环境 View of the tower and its surroundings
设计空间结果也设计空间抵达路径 Design spatial outcomes and design spatial arrival paths
“Climbing high and looking far, leaning against railings” is the ultimate result of our desire for users to climb the tower, and the process of reaching the result also affects the feeling of the outcome situation. Therefore, the ancients said “different scenery with different steps”. Therefore, the process of climbing the tower is also the key point of the design: climb up the landscape tower along the mountain slope path from the dense forest, spiral up the hanging light ladder of the landscape tower, feel the gradual expansion of the view from the nearby mountains and trees to the vast lake sky, and then pass through the narrow platform entrance, bringing a brief contraction of emotions. Upon reaching the platform, one will feel even more enlightened when climbing.
▽景观塔下 Under the view tower
▽登山路径 Hiking path
▽登顶风景 Peak view
The form of the landscape tower takes the meaning of “bright moon” and simulates the shape of “gradually rising convex moon”, which is a nearly “perfect” lunar phase, containing the designer’s beautiful symbolism. In order to give the landscape tower a sense of independent material existence and to reflect the corresponding mountains, forests, and environment, the design focuses on shaping its lightness, thinness, and purity, hoping that it will float like a bright moon in the mountains.
▽月下的景观塔 The view tower under the moon
理性结构逻辑实现感性空间情境 Realizing Sensory Spatial Situations through Rational Structural Logic
The shaping of emotional imagination requires the rational implementation of mechanical logic, and only sufficiently slender supporting structures can achieve architectural intentions. The integrated design of space structure has become a key element in project implementation.
Considering the form, stair path, structural force transfer efficiency, etc., the structural design uses “frame column+swing column+stair slant support” to jointly build the support system of the project:
Six frame columns transmit vertical forces and bear bending moments to participate in lateral resistance;
Six swinging columns assist the frame columns in transmitting vertical forces but do not participate in lateral resistance to minimize diameter;
The inclined beam system of the staircase surrounds and connects 6 frame columns in ascending series, forming a lateral force resistant system similar to a supporting frame to enhance the overall integrity of the structure.
▽结构优化前后 Before and after structural optimization
▽景观塔结构 Landscape tower structure
If the upper limit of the conventional steel column slenderness ratio of 120 is calculated in reverse, the diameter of the landscape tower steel column should be at least 300mm, but this cannot achieve the design demand of “lightweight and thin” floating sensation. Therefore, we adopt a performance-based design method of “high bearing capacity low ductility”, breaking through the conventional slenderness ratio limit by increasing the bearing capacity surplus of steel columns, and ultimately achieving a frame column diameter of 245mm, a slenderness ratio of 150, a swinging column diameter of 152mm, and a slenderness ratio of 200.
▽框架柱+摇摆柱的竖向力、抗侧力分担示意 Vertical force and lateral force sharing of frame column + swing column
▽夕阳下的景观塔 View tower at sunset
The reduction of cross-sectional diameter weakens the lateral stiffness of the structure, and even if the bearing capacity meets the requirements, noticeable horizontal shaking will occur in wind and crowd activities. In order to improve the comfort of the experience, considering that the stiffness and weight of the structure are greatly affected by construction conditions, vibration measurements will be carried out after the main structure is basically completed, and further analysis of the physical comfort will be carried out through computer calculations. Finally, by adding four 500kg Tuned Mass Dampers (TMDs) along two main axes, the vibration reduction efficiency exceeded 50%.
▽TMD施加前后水平晃动加速度对比 Comparison of horizontal shaking acceleration before and after TMD application
▽远眺景观塔 Overlooking the landscape tower
The fusion of emotional design context and rational mechanical logic deduction is realized in the landscape tower, making it an exquisite construction sketch.
▽一层平面图 1F Plan
▽二层平面图 2F Plan
▽景观塔大样 Landscape tower large sample
Project Name: Chongqing Mingyue Lake Scenic Pagoda
Project location: Collaborative Innovation Zone in Liangjiang New Area, Chongqing
Design date: July 2022
Built in: June 2023
Project Director: Wu Yan
Lead architect: Guo Tongjiang
Structural Director: Huang Jia
Complete list of design teams: Wu Zhenhui and Liu Zheng (architecture); Yang Guanglei, He Song, and Gao Hongwei (structural); He Changyan, Feng Yuanmeng (Landscape)
Built status: Built
Land area (square meters): 500 square meters
Building area: 131 square meters
Design unit: gad Design Group Ltd.
Structural consultant: gad Design Group Ltd.
Construction drawing design: Guangdong Architectural Design and Research Institute Ltd
Construction: China Construction Seventh Bureau
Owner: Chongqing Liangjiang Collaborative Innovation Zone Construction Investment Development Ltd
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