Steel structures - Häme University of applied sciences
Steel structures
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Steel structures

Steel structures

Who are we

Our main competence areas include high-strength steel welding, structural fire engineering, reuse of steel structures, structural testing and finite element analysis in the applications of steel structures. We have more than twenty years of experience in structural testing of sheet metal products including sandwich panels and cold-formed sheets according to European standards. We use Finite Element Analyses (FEA) as one of the major methods, in addition to structural testing, to conduct theoretical research in steel structures. The FEA softwares include Ls Dyna, ABAQUS, RFEM and Robot Structural Analysis. We are capable of conducting structural testing of light-weight sheet metal products to fatigue tests of heavy welded structures.

Steel structures research group consists of research-oriented engineers and laboratory engineers. The group is led by principal research scientist, PhD, D.Sc., MBA, Zhongcheng Ma.

What do we do

We work enthusiastically in both public funded research projects in national and international levels as well as in the area of research and development with global and regional companies. Our major research interest is the design and execution of sustainable and fire-safe steel construction. We perform both basic and applied research in our competence areas. Engineering-oriented research activities are the core at this moment, and we aim to bridge the science-based research in scientific universities and the current engineering research in university of applied sciences in the future.

Applications of high strength steel are increasing, and manufacturing of high strength steel structures remain challenging. Carbon emissions and fire safety are another two critical challenges in the steel construction. We will focus our research more in these challenges and provide knowledge and solutions to the society for a sustainable and fire-safe built environment. Our R&D services aim to promote and revitalize the steel manufacturing and construction industry. We will continue the activities in engineering educations, to provide knowledge and cultivate the research interest of young engineers.

Who do we work with

In the engineering research field, we cooperate closely with national and European universities. As a competent partner, we provide value-added contributions in both EU and national research projects. In global and regional company level, our R&D services are valuable especially for the small to medium size companies in manufacturing and construction industries. For them we provide for example load-bearing tests, finite element analyses and theoretical calculations.

Our infrastructure

Our structural testing laboratory can be utilized to test the behaviour and load-carrying capacity of both full-size structures as well as individual structural members. The equipment is suitable for both static and repeated loadings.

We have multiple hydraulic cylinders with loading capacities of 25 (1), 250 (2) and 630 (2) kN. The control system of the cylinders allows programming for test-specific timed loadings, for controlling the speed of the loading, and for controlling the loading so that the tested member reaches the desired displacement and displacement rate at a specified point. When two cylinders are used to load the tested piece/member the cylinders may function dependent on each other, thus enabling a simultaneous loading. Test measurement results are saved automatically on to a computer.

We also have three systems for material testing:

Zwick/Roell Z050 – suitable for tension and compression tests up to 5 kN, 50 kN and 250 kN.

GOM / Aramis optical strain measurement system

3D-scanning devices

These devices can be used for versatile testing purposes: tension and compression properties of different materials, as well as resistance of various joints (e.g. welded seams and adhesive joints) and standard / application specific coating adhesion.