Research on survivability of mesh hyperboloid structures

Abstract

The object of study is a mesh hyperboloid tower, which has a base diameter of 34 meters and a height of 128 meters, constructed by an engineer V.G. Shukhov. The survivability property of the mesh hyperboloid tower was accepted as a subject of research. The aim of the work is to perform a numerical calculation of the mesh hyperboloid tower for survivability in a static setting, under conditions of failure of individual load-bearing elements of the system as a result of an accident. This calculation evaluates the survivability of the structure. The research methodology involves consideration of several options for the collapse of the bearing elements: 1. Collapse of the intermediate rings of the 1st and 2nd tiers and 16 racks of the mesh tower, excluding power transmission cables; 2. Collapse of the intermediate rings of the 1st and 2nd tiers and 16 racks of the mesh tower, taking into account the influence of the load from the power transmission cables during operation. As a result, the most dangerous destruction zones are identified, from the point of view of the survivability of the structure, the survivability coefficient of the mesh tower, as a whole is determined. As a result of the calculations, it was revealed that when the intermediate rings and 16 racks in the tower elements are removed, the efforts in the elements adjacent to the collapse zone increase by 2.6 times. The asymmetry of the load on the removed elements plays a significant role in changing the efforts. With the removal of the intermediate rings of the 1st and 2nd tiers and 16 racks, the zone of the 1st lower tier becomes the most loaded. Compression efforts in the remaining racks of this tier increase by 150%. In addition, the number of compressed-bendable elements of the tower shell increase. The results of this work can be used by designers to calculate structures’ survivability.