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Showing posts from November, 2014

World’s first Tensegrity Bridge - Kurilpa Bridge

Ad Introduction :- Australia's Queensland State Government in 2006 established a design brief on a pedestrian bridge with low budget hardly possible in state capital, Brisbane to establish link with Queensland Gallery of Modern Art  (GoMA). Baulderstone (contractor), Arup (engineer) and Cox Rayner (architect) won the design competition with a design, fusion of art and science having array of masts, cables and flying steel spars well suited with locality, structurally efficient and completely original. More on “tensegrity”. Key statistics Ø   Bridge deck 430m long x 6.5m clear width between handrails Ø   500m 3  of concrete and 500 tonnes of steel Ø   Nearly 7km of high strength steel cables Why “tensegrity” Bridge? All the possible solution in front of the team and why there were discarded is shown below:- Restrictions :- Clearance and remote access. OPTION HINDERANCE DECISION Cable-stayed Large mast Visually Dominant No Arch Poor soil condit...

Structural Health Monitoring

Abstract: Typically structure is suited design erected with components such as  roofs,  slabs,  beams, columns and foundation. These structures damage due to exposure conditions like temperature, ill-management during construction and lack of quality of control during construction. Damage to structure may be defined as changes to the material or geometric properties of a structural system, including changes to the boundary conditions and system connectivity, which can adversely affect the system’s performance. In SHM process we observe system over time with the help of periodically sampled dynamic response measurements from an array of sensors, then extract damage-sensitive features, and finally statistical analysis is done to determine the current state of system health. After extreme events, such as earthquakes or blast loading, SHM is used for rapid condition screening and aims to provide, in near real time, reliable information regarding the integrity of the structure...

Disaster Management

Ad           Literally speaking natural disaster is the effect of a natural hazard (e.g., flood, tornado, hurricane, volcanic eruption, earthquake, heat wave, or landslide). Disaster management is increasingly a global enterprise for international organizations, Governmental institutions, and arguably individuals. Disasters are either caused by natural phenomena or human action. Natural disasters can be also exacerbated by human error during reaction and mitigation .Examples of natural disasters   internationally mitigated include earthquakes, volcano eruptions, severe droughts, floods, and indeed tsunamis.                         Disaster management is a vast domain that includes treaties, laws, policies, equipment, and training implemented by the United Nations down to community civil defense organizations. Organizations can be characterized by their roles in disast...