Šuchov’s bent networks

Type: Journal Paper
Title: Šuchov’s bent networks: The impact of network curvature on Šuchov’s gridshell designs
Year: 2020
Authors: Eike Schling, Rainer Barthel
Published in: STRUCTURES, Volume 29, February 2021, Pages 1496-1506
DOI: https://doi.org/10.1016/j.istruc.2020.12.021
Office: The University of Hong Kong; Technische Universität München, Chair of Structural Design

At the turn of the twentieth century, the Russian engineer Vladimir Šuchov developed an internationally acclaimed design language for steel construction. His filigree constructions – from lattice shell to the hanging roof – are timeless in their economy, lightness and, not least, simplicity. By combining a profound geometric and mechanical knowledge, Šuchov succeeded in deducing astonishingly pragmatic designs. A decisive strategy for simplification was the deliberate, elastic and plastic deformation of Z, L and flat steel profiles into continuously curved structural elements. As a result, Šuchov was able to assemble complex doubly curved grids using only repetitive components and simple riveted connections.

In this paper we conduct a geometrical analysis of these structures looking at the curvature behaviour of four exemplary structures with increasing complexity: the hyperbolic tower, the rotational hanging roof, the cylindrical lattice vault, and the parabolic, double-curved gridshell. By systematically deriving their geometry and examining the three axes of curvature of each rod within those grids, we discover previously undescribed deformations of the steel members and deduce their associated bending moments and stresses.

The results reveal Šuchov’s systematic approach to utilizing elastic deformation to simplify construction, and offer conclusions about the prefabrication, the construction process, and the design approach he used for his lattice constructions. This has a direct impact not only on specific repair measures and structural analysis of his structures, but also on current research and the design and construction of similar gridshells today.

About eikeschling

Dr.-Ing. | Architect BYAK Assistant Professor in Architectural Structures The University of Hong Kong

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: