SEISMIC PERFORMANCE Meaning and
Definition
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Seismic performance refers to the ability of a structure or infrastructure system to withstand or resist the destructive forces generated by an earthquake. It encompasses the resistance of buildings, bridges, dams, and other structures to seismic hazards, as well as their ability to maintain functionality during and after an earthquake event.
The term "seismic performance" considers various aspects of a structure's behavior, including its ability to withstand ground shaking, avoid excessive deformation, and protect occupants from harm. It takes into account factors such as structural integrity, redundancy, ductility, and energy dissipation mechanisms to mitigate the effects of seismic forces.
High seismic performance implies that a structure has been designed and constructed to meet or exceed the seismic safety requirements of the location where it is situated. It is often expressed in terms of a performance level or rating, indicating the expected level of damage and functionality of the structure under a given seismic event or intensity.
Assessing the seismic performance of structures is a multidisciplinary field that involves the collaboration of engineers, seismologists, and other experts. Various techniques, including mathematical modeling, computer simulations, and physical testing, are used to evaluate the behavior and response of structures under seismic loads. The outcomes of these evaluations help inform the design, retrofit, and construction of structures to improve their seismic performance and reduce the risk to people's lives and assets during earthquakes.
Etymology of SEISMIC PERFORMANCE
The word "seismic performance" is a combination of two terms: "seismic" and "performance".
1. Seismic: The term "seismic" is derived from the Latin word "seismus", which means "shock" or "earthquake". It came into English from the French word "sismique" in the late 19th century and refers to anything related to earthquakes or seismic activity. Its etymology can be traced back to the Greek word "seismos", meaning "earthquake".
2. Performance: The word "performance" originated from the Latin word "performare", which combines "per" (through) and "forma" (form or shape). It entered Middle English through Old French in the 14th century and initially referred to the execution or accomplishment of an action. Over time, it gained broader usage and now commonly signifies the manner in which something is carried out or achieved.
