Tensegrity structures are composed of tension compression components, where the compression components (bars) are discontinuously enclosed within continuous tensile components (cables). From an engineering point of view, a tensegrity structure is characterized by geometric non-linearity and large displacements under loading. Therefore, its prestressed shape and deformation under loading are the...

The Collapsible Rib Tensioned Surface CRTS re ector is a new concept for multipur pose deployable membrane re ectors that is being developed by the European Space Agency It is based on the inherent geometrical stability of a doubly curved membrane with high in plane sti ness maintained in a state of tension by a series of exible ribs The shape of a CRTS re ector is not uniquely determined It re...

The segmental prestressed concrete box girder of Koror-Babeldaob (KB) Bridge in Palau, which had the record span of 241 m (791 ft.), presents a striking paradigm of serviceability loss due to excessive multi-decade deflections. The data required for analysis have recently been released and are here exploited to show how the analysis and design could be improved. Erected segmentally in 1977, thi...

Annual bluegrass (Poa annua L.) turf quality is reduced during periods of high temperature. To predict heat stress injury and develop improved prestress maintenance practices, an understanding of the seasonal variation in annual bluegrass heat tolerance and the influence of soil moisture on heat tolerance is crucial. Annual bluegrass growing in the field on a Drummer silty clay loam (fine silty...

This study was designed to test the assumption that elastic tissues of the ankle are prestressed, by investigating the presence of simultaneous opposite passive elastic moments and thus, passive co-tension, at the ankle joint. A prestressed two-spring model used to generate qualitative predictions of the effects of stretching the posterior elastic structures of the ankle on the net passive mome...

In order to improve the force performance of traditional anti-buckling energy dissipation bracing with excessive non-recoverable deformation caused by strong seismic action, this paper presents a prestress-braced frame structure system shape memory alloy (SMA) and investigates its characteristics under horizontal load. Firstly, establishes theoretical analysis model analyzing geometric relation...

The cable-supported grid structure (CSGS) is a hybrid combined with rigidity and flexibility. Its formed state closely related to the zero-stress state, construction process, prestress distribution. self-equilibrium force-finding method proposed in this paper continuously conduct form-finding, analysis. As first engineering project adapting CSGS an internal compression ring, Shanghai Pudong Foo...