Semicircular tensile membrane picture

Quick answer：

A semicircular tensile membrane is a type of architectural structure that uses tensioned fabric to create a curved, semicircular shape. These membranes are commonly used in modern architecture for their aesthetic appeal and functionality. The structure involves a series of cables and supports that hold the fabric in place, allowing it to span large distances without the need for intermediate supports. Tensile membranes are known for their durability and ability to withstand harsh weather conditions.