Constructing a high-rise building should be made with careful consideration. The structure of a high-rise building is very complicated as engineers need to make sure that it can hold extensive load as well as withstand harsh elements.
One of the most important factors an engineer must pay attention to is the structural system of the building. Let us go through each of the structural systems of a high-rise building to better understand how important it is to the entire building structure.
Following are the structural systems that engineers must pay attention to.
Braced-Frame Structural System
The braced-frame structural system is a cantilevered vertical truss that can withstand lateral loads. It is commonly used in steel constructions and is the best option for multi-story buildings that belong to the low to mid-high building category.
The structure uses girders to form the structural web for support. Aside from its primary function, a braced-frame structural system is also used by engineers to enhance the lateral stability and resistance of a rigid-frame structural system.
The advantage of this structure system is it is economical and efficient. It can also be used repetitively throughout the height of the building. However, the downside of this system is that it may hinder internal planning including the placing of doors and windows.
Rigid-Frame Structural System
The rigid-frame structural system, on the other hand, has a monolithic pattern of beams, slabs, and columns joined together with rigid points. These points are also called the fixed joints that have moment and shear resistance as well as axial forces.
A rigid-frame structural system is best for reinforced concrete buildings. It can also be utilized on steel constructions but will be very costly. This type of building structural system can withstand bending moments which is best for high-rise buildings.
Bending moments or BM is the bending effect resulting from an external force applied to the building’s structural system.
Wall-Frame System or Dual System
The third building structural system is the wall-frame system. It is also referred to as a dual system because it mainly consists of a wall and frame that are interconnected horizontally to create a system that is stronger and stiffer.
The walls of this structure are solid and are commonly located around stairwells, elevators, and around the perimeter of the building. These walls also provide extra security for the structure to prevent soft-story collapse.
Shear Wall System
A shear wall system is a continuous vertical masonry wall or reinforced concrete structure that can withstand lateral loads and gravity as well. It also functions as a narrow cantilever beam which is constructed to be the core of the building.
The shear wall system is suitable for residential and hotel buildings where a continuous wall is required for the floor-by-floor monotonous planning. Additionally, it is an effective fire and acoustic insulation system for the building’s rooms.
Core And Outrigger Structural System
Core and outrigger structural system is a system that is a connection of the core or spine of the building to create closed-space outer columns. The main purpose of this structure is to improve the building’s stiffness and strength.
The core of these structures consists of braced frames or shear walls. The outrigger systems on the other hand tie together two structural systems which are the core and the perimeter systems to make the building act as similarly as possible to the composite cantilever.
All in All
Understanding the structures and functions of each structural system will help you design a high-rise building that is safe and sturdy which can withstand different natural elements that it will encounter. Incorporating the proper structural system into a specific building will ensure its quality and strength.