Reddy Kancharla Looks at High-Rise Structural Systems

 

Reddy Kancharla: Structural Systems for Tall Buildings

Towers and skyscrapers have long been a source of amazement for people worldwide. These colossal structures have captured our imaginations for centuries as we marvel at their sheer height and the technology required to construct them. It's hard to believe that these impressive buildings were once considered impossible feats of engineering. Today, we are privileged to learn about the structural systems that have made these towering achievements possible. Reddy Kancharla, an expert in the field, reviews some of the most innovative technologies that have allowed us to reach new heights in building design and construction.

1. Rigid frame: Beams and columns are constructed monolithically. It means concrete is poured continuously over the reinforcement, thus, resulting in a rigid frame system. It is suitable for reinforced concrete buildings like the Burj Khalifa in Dubai.  

2. Wall-frame: Otherwise known as a dual system, Reddy Kancharla explains that this system combines a wall and a frame to resist forces by interacting horizontally, creating a stronger and stiffer system. These solid walls are usually found around elevator shafts, stairwells, and sometimes at the building's perimeter. This system also helps in preventing a soft-story collapse.   

3. Braced frame: Columns and beams are supported by so-called cantilevered vertical trusses that are used to resist lateral loads. It is mostly done in steel construction, suitable for low to medium-height multistory buildings. That said, this type of framing affects the location of doors and windows. Coordination with the architect, therefore, is advised.

4. Core and outrigger: This system connects the core or spine to outer columns that are closely spaced together, which improves the building overturning stiffness and strength. There are two structural systems: a core system and a perimeter system. They work together to enable the building to behave like a composite cantilever—best for buildings 70-story and higher.

5. Shear wall system: According to Reddy Kancharla, the core of a building where elevators and fire exits are located is constructed as a shear wall. Shear walls, like narrow-deep cantilever beams, are tough against gravity and lateral loads. Hotels and residential buildings take advantage of the typical layout provided by the vertically continuous shear walls.

Reddy Kancharla has extensive knowledge of engineering theories and principles, civil engineering and construction industry methodologies, and developing quality systems in construction that complies with various codes and standards. For similar posts, visit this page.