In many cases, it is the pressure given by the architect that drives the structure to explore more possibilities.
▲ City view window © Yeran ▲ Design Strategy ▲ Structure Diagram For more details, see: Break the boundary, integrate and share Jing’an Archives and Community Cultural Center.
▲ Location relationship between Kunming Airport T2 Terminal and the current site ▲ Aerial view of Kunming Airport T2 ▲ Schematic diagram of the completed filling and excavation surface of Kunming Airport T2 Site ▲ Typical longitudinal section of Kunming Airport T2 Terminal ▲ Overall analysis model of the structure and rock and soil of Kunming Airport T2 Transport Center ▲ Interior renderings of Kunming Airport T2 Terminal Architects’ imaginations (“wishful thinking”) often ignore the pressure state of the structure, Add another pressure weight easily.
At the same time, the staircase cylinder outside this area is used to project the cantilever truss above the roof to form a suspension for the lower structure.
In many cases, the building needs a special shape for space and function, just like people sometimes need to put a POSE.
The base staggered isolation with a height difference of 9 meters is adopted, and the vibration and earthquake double control is adopted for crossing the high-speed railway area.
The roof structure of Hohhot Airport Terminal under construction can try to echo this state.
The single structure in the main building area is more than 560 meters long and the maximum height is 73.2 meters.
“Feeling” has always remembered a sentence in the course of Introduction to Civil Engineering by Professor Zhu Bolong when he just entered Tongji University in 1986: “Try to imagine your body as the structure you are designing, and always ask if you are in a comfortable state.” Feeling and controlling the stress state of the structure is the most essential work of structural design.
It is better to hold the wall with one hand to prevent accidental collision.
To make this posture look beautiful, you need to coordinate your body balance: when one leg is lifted, the other leg that falls to the ground needs to be particularly powerful, and your body needs to lean slightly to maintain balance.
The high-speed railway and subway cross the ground and floor, and the environmental conditions are extremely complex.
A recently completed small project, the Shanghai Jing’an District Archives and Community Cultural Center, has put up such a POSE.
Considering the influence of terrain, the seismic parameters at the location of each individual building are equivalent to 8.7-9.0 degrees according to the safety assessment.
The single structure of the traffic center located on the slope, the arrival departure track of the high-speed railway and the main structure bridge are built together, which can not be isolated, so the hybrid damping measures of BRB and VFD are adopted; Since the base is located on a multi-stage slope bench with a height difference of 18m, we try to study the influence between the two by the overall analysis of rock, soil and structure.
I would like to bring light to you in the confusion and hesitation, and cheer for you in the process of forging ahead.
Two force transmission ways ensure the safety redundancy of the structure.
To this end, the Architectural Structure magazine invited some structural experts to talk about the projects they are working on or the challenges they are facing, about the people or things they are concerned about, about their surroundings or far away, etc., and to report on what contemporary structural engineers are doing, doing, thinking and thinking.
As far as technical pressure is concerned, I think it comes from at least three aspects: the natural conditions of the project, the persistent pursuit of architects, and the desire of engineers to challenge themselves.
In order to shape the image of public cultural space facing the city, the architect nested and overlapped the exhibition hall, small theater, reading room, multi-function hall, exhibition gallery and other spaces, and presented them as transparent urban landscape windows.
The current construction industry market is unpredictable, so it is better to stand on the current rather than hesitate.
Q1: What have you been busy with these years? Mainly focus on the busy project, and experience the sweetness and bitterness brought by structural design in the process of project practice.
The most comfortable state of the body is to sit or stand easily (not lying!).
There is no vertical component falling to the ground within 15.6m of the elevation in this area.
In the T4 terminal project of Urumqi Airport, in order to demonstrate the theme of “Silk Road Tianshan Mountain”, the architect hoped that the roof of the ticket lobby would be both undulating and silky flowing, so he cut the entire roof into strips with side skylights, and columns would support every interval..
The T2 terminal of Kunming Airport under design is located at the edge of the high fill slope with a height difference of 47m, and the basic seismic fortification intensity of the site is 8.5.
“Bearing” If the transmission of force flow in the body is just imagination, the structural engineers who bear all kinds of pressures are actually daily.
I summarized these experiences into three states: feeling, bearing and enjoying: feeling the transfer of force flow in the structure, bearing all kinds of pressures faced by design, and enjoying the joy brought by each step.
The whole structure is made up of two ground shear walls at the bottom and their cantilevers through various conversion supports.
The best state of the structure should also be stable, with balanced stress on all parts and the ability to cope with unexpected effects.
▲ ETFE air pillow covers the cable to form a transparent skylight ▲ The skylight protruding from the roof presents the image of a yurt ▲ The calculation simulation and construction site photos of the roof column.
The two-way crossing truss structure can easily span the medium column grid with a maximum of 58mx45m; The column goes out of the roof and sets radial cables and stay cables from the top of the column to hang the surrounding truss; ETFE air pillow covers the stay cables to form a transparent skylight, and the skylight protruding the roof presents the image of a yurt; The column shall be made into a shuttle shape with hinge up and down to reflect a dynamic feeling.
In case of being hit by someone, you must be able to maintain a stable posture.
Interviewee Zhou Jian, Chief Structural Engineer of Huajian Group and Chief Structural Engineer of East China Architectural Design and Research Institute Co., Ltd.
The lateral stiffness lost by the hinge column shall be compensated by additional peripheral steel columns, so that the overall lateral resistance of the roof can resist wind load and the seismic action of the 8-degree seismic fortification area.
