Because of its particularity, high-rise buildings have different characteristics from ordinary buildings, so what are the design points of super high-rise buildings? Let's have a look!
1 technical principle of super high-rise building
(1) Establish a friendly relationship between buildings and urban environment, improve the utilization rate of land resources, and create a people-oriented, healthy and efficient microclimate environment with high quality. The indoor environment compliance rate is 100%.
(2) Combining the unique climate environment and the characteristics of the building itself, optimize the energy-saving design of the building to the maximum extent, make full use of renewable energy, rationally realize the cascade utilization of energy, and improve the energy utilization efficiency of the building, with a comprehensive energy-saving rate greater than 60%.
2 Advantages and disadvantages of super high-rise buildings
The so-called high-rise building, different countries have different national plans. In China, high-rise buildings refer to residential buildings with ten or more floors and other buildings with a building height of more than 24 meters, which are called high-rise buildings. High-rise buildings are the product of modern economic development and scientific and technological progress. Urban population concentration, land shortage and fierce commercial competition have promoted the emergence and development of modern high-rise buildings.
What are the rules for setting the refuge floor of super high-rise buildings?
1. The setting of the refuge floor from the first floor to the first refuge floor or between two refuge floors of a high-rise building should not exceed15; This is because the maximum working height is 30 ~ 45m when climbing and lifting fire engines. According to the actual measurement of firefighters, when climbing above 10 floor, the heartbeat and breathing are obviously accelerated, which does not meet the needs of jumping and will bring adverse effects to fire fighting work. Therefore, considering the above reasons and saving investment, the first floor to the first refuge floor and the above two refuge floors should not exceed 15.
2. The smoke-proof stairwell leading to the refuge floor should be separated in the refuge floor, dislocated or disconnected from top to bottom on the same floor, but personnel must go up and down through the refuge floor;
3. The net area of the refuge floor shall be calculated as 5 persons per square meter;
4. The refuge layer can also be used as the equipment layer, but the equipment pipes should be arranged centrally, and the equipment tube wells and vertical traffic facilities should be enclosed by walls with a fire resistance limit of not less than 1h;
4. Provisions on curtain wall setting of super high-rise buildings
1. The wall between the window and the windowsill wall shall be filled with nonflammable materials. When the exterior wall is made of incombustible materials with a fire resistance limit of not less than 1.00h, incombustible materials can be used as the filling materials in the wall;
2. For the glass curtain wall without window partition and window sill wall, a non-combustible solid skirt wall with a fire resistance limit of not less than 1.00h and a height of not less than 0.80m should be set in the external volume of each floor;
5 concrete filled steel tube in super high-rise building
With the development of building science and technology, the fifth structural type, namely the brand-new steel-concrete composite structure, has appeared in recent 20 years. This new building structure gives full play to the material characteristics and advantages of steel and concrete, and can be divided into four types according to its combination mode: concrete filled steel tube structure, steel-concrete composite beam, steel-clad composite structure and rigid reinforced concrete structure. They are characterized by simple construction, short construction period, good structural performance and saving a lot of building materials. Concrete-filled steel tube is a kind of steel-concrete composite structure, which is a building component made of plain concrete filled in steel tube. It has the outstanding advantages of high bearing capacity, good seismic performance, steel saving and simple construction, and has been widely used in high-rise and super-high-rise buildings.
6 design difficulties of super high-rise buildings
Super high-rise building is like a street erected, and there are many problems that are difficult to solve properly, such as safety, internal traffic, environment and energy consumption. The higher the development, the more problems such as safety, durability and comfort, and the higher the requirements for structures, architecture, electromechanical, HVAC and elevators.
Seven Suggestions on the Design of Super High-rise Buildings
First of all, before the construction design of super-high-rise building, the first thing to do is to analyze the construction objectives and requirements of the project in detail, select similar super-high-rise building projects according to the target height and target structure of the super-high-rise building, and refer to its design process and design content, so as to reduce the blindness and design risk of super-high-rise building design. In terms of construction technology, effective technical requirements must be determined according to the actual situation to ensure the overall construction quality of buildings, such as wall construction technology and internal support column construction technology. , and do a good job of supervision in the construction process, to ensure the effective implementation of construction technology. In terms of construction equipment, it is necessary to fully consider the construction content and make preparations for construction equipment, such as lifting equipment and lifting equipment, to ensure the construction progress and safety.
8 technical principles of super high-rise buildings
(1) Establish a friendly relationship between buildings and urban environment, improve the utilization rate of land resources, and create a people-oriented, healthy and efficient microclimate environment with high quality. The indoor environment compliance rate is 100%.
(2) Combining the unique climate environment and the characteristics of the building itself, optimize the energy-saving design of the building to the maximum extent, make full use of renewable energy, rationally realize the cascade utilization of energy, and improve the energy utilization efficiency of the building, with a comprehensive energy-saving rate greater than 60%.
9 What are the structural systems that can be used in super high-rise buildings?
More than 150 buildings have been built in China, with the height exceeding 150 meters. There are many structural forms to choose from. The common structural forms are: reinforced concrete frame-core tube structure, reinforced concrete frame-shear wall structure, steel frame-reinforced concrete core tube structure, steel frame-support structure, mixed structure, mega-structure and so on. In recent years, there have been many successful cases of oblique grid structure in office buildings.
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