Highly Standardized Long-Span Hybrid Trusses


Article Preview

This paper presents an innovative technology in the field of truss structures, which is based on an innovative concept of mixing two different types of materials and joining them with a newly conceived connection, able to carry high loads with a small size. After an initial feasibility study aimed at pursuing the realization of sustainable and green structures, the project of the hybrid space truss was finally developed. Here, hybridization is the keyword, that is, making use of two different building materials, steel and wood, to achieve lighter roofs through a specialization of their functions and an optimization of their mechanical properties. Another key point is modularity, which is an important aspect that allows easy and fast assembly of structures and, most of all, standardization of parts. The trusses have been designed in detail, with special attention to the connections, and have been built and tested at the Laboratories of the Hunan University at Changsha (China). In a typical process of “designing by experimenting”, the prototypes have been produced and the assembly process has been tested in order to confirm the feasibility of the whole process, from production to construction to ultimate performance conditions.



Edited by:

Giorgio Monti and Enzo Martinelli




S. Caruso et al., "Highly Standardized Long-Span Hybrid Trusses", Applied Mechanics and Materials, Vol. 847, pp. 485-491, 2016

Online since:

July 2016




* - Corresponding Author

[1] Eurocode 1. EN 1991, part 1-1, Actions on structures - Densities, self-weight, imposed loads for buildings,. Brussels, European committee for standardization, (2002).

[2] Eurocode 5. EN 1995, part 1-1, Design of timber structures - Part 1-1: General - Common rules and rules for buildings,. Brussels, European Committee for Standardization, (2004).

DOI: https://doi.org/10.3403/03174906u

[3] NTC2008 - Norme tecniche per le costruzioni - D.M. 14 Gennaio (2008).

[4] SAP2000 - Integrated Structural Analysis and Design Software.

[5] Chilton J., Atlante delle strutture reticolari, Torino, UTET, (2002).

[6] Piazza M., Modena R., Tomasi R., Strutture in legno. Materiale, calcolo e progetto secondo le nuove normative europee, Milano, Ed. Hoepli, November (2005).

[7] Kim J-W, Hao J. Behaviour characteristic of a full-size scale pyramidal space truss unit, Journal of Civil Engineering n. 1 vol. 6, March 2002, pp.33-38.

DOI: https://doi.org/10.1007/bf02829038

[8] Stulz R., Appropriate building materials,. SKAT and Intermediate Technology Publications Ltd, CH-9000, St Gallen, Switzerland, (1983).

[9] Kim J-W., Kim J-J., Rhew H-J, Analysis and experiment for the formation and ultimate load testing of a hyperspace truss, Journal of Constructional Steel Research n. 62, April 2005, pp.189-193.

DOI: https://doi.org/10.1016/j.jcsr.2005.04.020

[10] Šilih S., Premrov M., Kravanja S., Optimum design of plane timber trusses considering joint flexibility, Journal of Engineering structures n. 27, November 2004, pp.145-154.

DOI: https://doi.org/10.1016/j.engstruct.2004.10.001