Jiunvfeng Study

Jiunvfeng Study

Architect
line+
Location
China, Shandong, 泰安市 | View Map
Project Year
2019
Category
Villages

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Stories By
line+

Vondom

A Suspended Cloud: Jiunvfeng Study on Mount Tai / gad · line+ studio

line+ as Architects

It comes from Lao Zi’s Tao Te Ching that “major principles are simple”. “Less is more” in the architectural philosophy of western modernism and the minimalism pursued by contemporary Japanese architects have actually been embodied as early as thousands of years ago in China. In the ancient Chinese idea, architecture can even get rid of any medium and reach the extreme lightness without its existence.

Jiunvfeng Study is located in Daiyue District, Tai’an City, adjacent to the Shenlong Grand Canyon, with Mount Tai, the top of the five sacred mountains, in the east. It is surrounded by mountains, full of rocks like flocks of sheep, with the broad vision of overlooking the gorge and gully and looking out mountains and peaks. On the rocky mountain in the north, the contrasting white is left vacantly, which was the original idea of the design.

 

01 Site and Form

Comparing with the magnificence and sublimity of Mount Tai, Jiunvfeng is simple and restrained. line+ hopes to build "a floating cloud wadding hovering in the mountains" to respond to the magnificent cloud sea of Mount Tai.

The study is located at the high point of the mountain ridge, with mountains in the east, the village in the west, it can be seen when driving to circle up the mountain.

The building form can be divided into three parts from top to down: the white “cloud body”, transparent glass and thick rubble wall base. The north side faces the wide interface of canyon and peak. The narrow corridor at the entrance connects the coffee bar and the reading   area at the two sides. It blurs the boundary between the architecture and the natural landscape, giving visitors and readers the illusion of being in the top of forests and mountains.

 

02 Material and Structure

The accurate use of materials and structures is equally important for the form expression of the design idea. For the shaping of the concept of cloud flocculation, we hope to highlight the following key words: floating, light and transparent. In the natural conflict between the soft intuitive cognition of "cloud" and the simple and hard mountain environment in northern China, it gives people a relaxed and pleasant intuitive perception. 

The light steel and membrane structure system used in the main building has the characteristics of firmness, reliability and lightness, which enables the design to draw the thin and stretching shape with the natural curve on the top of the hill.

The transverse base structure shrinks to a maximum extent, with balconies extending on each side, creating a sense of suspension.

The double-layer white membrane inside and outside the roof is drawn by a series of arched light steel keels with gradual changes in size, which ensures the fluent, soft and smooth shape of the roof.

Near the south side of the village, the wall is made of local rubble, which is thick and solid, melting into the mountain stepping up, and following the primitive temperament of residential buildings. The curved wall interface guides to the entrance, which indicates the orientation relation between the whole building and the site.

The high glass windows in rows between the rubble wall and the roof naturally transit the “heaviness” and “lightness” in the vertical direction which not only meets the needs of indoor natural ventilation and lighting, but also creates an ambiguous relationship between the rubble wall and the white membrane roof which wants to break free but is still related with each other.

The northern facade facing the canyon and the mountain unreservedly adopts a large area of rimless glass windows, and the transparent large glass accommodates the external flowing scenery, while the solid structure below the roof is hidden. The “cloud” looks like floating on the rocks from a distance.

The bookshelves and seats in the interior are also laminated in an integrated arc shape.

The curve corridor, which turns from wide to narrow, then to wide, naturally transits the dynamic and static public areas, and constructs the space boundary in a gentle way.

The inner membrane at the top of the room is covered with light strip. At night, the whole curved inner membrane radiates evenly, and the light escapes from the high windows between the stone walls and the membrane surfaces. It looks like a cloud with halo from the distance.

In order to maintain the integrity and purity of the membrane surface on the top of the room, we chose the ground air system. The main air duct under the floor is hidden in the side close to the rubble wall, and the branch pipe is upturned inside the ring beam, connecting the ribbon outlet through the cavity between the floor and the surface. While satisfying the requirement of air volume, the overall height of the outer edge of aluminum plate is reduced to the maximum extent, so as to ensure the light floating effect of the building.

 

03 Construction and Implementation

The project began to be constructed in April 2019 and was completed in September 2019. The precise and rapid assembly of the light steel construction system ensured the construction period. At the same time, the design work ran through the whole construction process: the uncertainty of the site forced the architect to re-perceive the site, so that the design can be updated and adjusted accordingly.

1 Foundation construction

To make the whole building “suspend” on the ground, the design foundation is slightly above the surrounding ground. After surveying the terrain, illumination and landscape resources, it is found that the canopy height and density condition of the existing vegetation directly affect the base location of the building and the view height of the landscape, so the base height was re-adjusted to 400mm.

2 Main structure construction

The precast element in the factory ensured the accuracy of construction. A thin steel column with a diameter of 150mm supports the arc-shaped ring beam, and a double-deck 28 pairs of arched keels were set up on the ring beam. This series of arc-shaped keels with gradual changes in size and dense arrangement provides support for the smooth tension of the inside and outside double layer membrane.

3 Structure installation of inner and outer membrane

Wire meshes were pulled and connected between 28 pairs of arched keels, and the tin foils were spread flat to reflect the light of LED light strip evenly, the bagged insulation cottons were covered and fixed on the tin foils. The inner lining fixed on the inner side of the lower keel is the light box cloth, which was finished by fine hanging and auxiliary tension with metal buckles. 

4 Rubble-wall masonry

The south side entrance and the elevation were built with the rubble wall, supplemented with the small steel column slipknots. The architect selected suitable size and color of rubble on site and guided the construction team to complete the masonry.

5 Lighting and indoor construction

The LED light strip is arranged lengthwise above the lower keels. To realize the large-area uniform floodlight effect of the indoor membrane bottom, the tests of different arrangement, illuminance and interval of LED light strip were carried out on site. 

 

04 Remarks

When morning light slightly illuminates, the transparent glass body is hidden in the forest; when night falls, the “cloud” floats on the mountain with a faint light; visitors inside are totally immersed in a relaxed space atmosphere to read and meditate. The architectural space created by the environment exists in the natural landscape of dynamic evolution, and we ascribe it to nature in the simplest and the most direct way, so as to live with nature in harmony.

 

Project Name: Jiunvfeng Study on Mount Tai

Project Location: Dongximen Village, Daiyue District, Tai’an, Shandong

Design Company: gad · line + studio (architecture, interior, landscape)

Chief Architect/Project Principal: Menɡ Fanhao

 

Design Team

Architecture: Zhu Min, Zhang Erjia, Xu Hao

Interior: Jin Xin, Hu Jinwei, Zhou Xinyi

Landscape: Li Shangyang, Jin Jianbo, Chi Xiaomei

Floor Area: 287.3 m2

 

Design Period: 2019.04-2019.06

Construction Period: 2019.05-2019.09

Client: Lushang Pusu (Tai’an) Cultural Tourism Development Co., Ltd.

Structure Coordination and Construction: Hangzhou Zhongpu Building Technology Co., Ltd.

Structure: Membrane structure roof and steel structure

Materials: Membrane, steel, rubble

Photography: zystudio, Jin Xiaowen, Pan Bing

 

Status: Built
Location: Shangdong, CN
Firm Role: Chief Architect/Project Principal
Additional Credits: Project Name: Jiunvfeng Study on Mount Tai
Project Location: Dongximen Village, Daiyue District, Tai’an, Shandong
Design Company: gad · line + studio (architecture, interior, landscape)
Chief Architect/Project Principal: Menɡ Fanhao
Design Team
Architecture: Zhu Min, Zhang Erjia, Xu Hao
Interior: Jin Xin, Hu Jinwei, Zhou Xinyi
Landscape: Li Shangyang, Jin Jianbo, Chi Xiaomei

Jiunvfeng Study

Vondom as Manufacturers

Conceived as a ‘suspended cloud’, this white pavilion in China’s Shandong province serves as a visitor centre that offers sweeping views across the mountainous landscape. Designed by Gad · line+ Studio, the structure is located adjacent to the Shenlong Canyon, with Mount Tai, one of China’s five ‘sacred mountains’, to the east. The building itself comprises three main parts: a white membrane canopy, a transparent floor to ceiling glazing, and a thick stone base. The pavilion was constructed in its entirety in just five months.

Contrasting the hard and unforgiving landscape, Gad · line+ Studio designed the pavilion — referred as ‘Jiunvfeng Study’ — to be as light and transparent as possible. “Less is more’ says the design team.

The entrance to the pavilion is through an opening in the stone walls, before encountering a single long room fl anked by two outdoor balconies.

In addition to the study, which contains books and a variety of seating areas, furnished with Africa chairs and Mari-sol tables, contract furniture that was designed by Eugeni Quitllet. The building also includes a bar elegantly decorated with stools from Vondom’s Wall Street collection. Floor-to-ceiling windows offer panoramic views of the mountains, giving guests the illusion of being high in the treetops. Meanwhile, from a distance, the white structure seems to float gently over the landscape.

Visitors inside are totally immersed in a relaxed space atmosphere to read and meditate.

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