The “form finding” methods for tension structures may be classified into two different groups: the linear and nonlinear methods. One of the linear methods is the force density method FDM . In this paper advantage is taken of an important property of the FDM by which knowledge of the initial position of the nonfixed nodes of the structure is not needed, only the connectivity of the nodes is nece...

according to the iranian code of practice for seismic resistant design of buildings, soft storey phenomenon happens in a storey when the lateral stiffness of the storey is lower than 70% of the stiffness of the upper storey, or if it is lower than 80% of the average stiffness of the three upper stories. in the combined structural systems containing moment frames and shear walls, it is possible ...

Earthquake force, loading more than structural capacity, cracking, material fatigue and the other unpredicted events were undeniable in the structure life cycle in order that environmental conditions of the structure would be changed and treats health. Damage of structures such as crack, corrosion of the post tension cables from inappropriate grouting of the post tension structures and etc. can...

Ultra-high performance concrete (UHPC) is a developing concrete and today is increasing to interest using it in structures due to its advantages such as high-compressive strength, modulus of elasticity, highly durability and low-permeability. Therefore, it is necessary to provide models for prediction of nonlinear behavior of this material. This study is aimed to investigate the tension-stiffen...

Tensegrity Structures are nowadays very popular even if, until now, there are very few full scale true tensegrity projects. Since the concept enounced by Richard Buckminster Fuller, and the first sculptures by Kenneth Snelson at Black Mountain College in 1948, they were the object of an increasing number of studies. The main applications are not all in the field of Architecture and Civil Constr...