亚博体育官网首页

Seismic Isolators : Isolating the catastrophe
Technology

Seismic Isolators : Isolating the catastrophe

Though 81 percent of the strongest earthquakes on earth occur along the circum-Pacific seismic belt, which is often referred to as the "Ring of Fire." The Alpine-Himalayan seismic belt extending up to Andaman-Nicobar island region, is also known to be one of the seismically active belts of the world.

Due to a surge in development activities brought on by urbanisation, economic expansion, and the globalisation of India's economy, the risk of earthquakes has increased. After an earthquake, severe financial losses that cause the local or regional economy to collapse could have long-term negative effects on the entire nation. In the event that a megacity like Delhi or Mumbai is affected by an earthquake, this effect would be amplified even further.

All the elements of the built environment including tall buildings have to constantly remain in the shadow of tremors which can cause havoc, in such cases use of seismic isolators can reduce the intensity of damage caused by an earthquake and minimise the loss of life and property.

Seismic isolation is the process of installing isolation devices beneath a building to shield it from major earthquakes. Japan has used it to good effect. The number of seismic isolated buildings exceeds 4000. The National Museum of Western Art in Tokyo was built in 1958 by Shimizu Corporation and was originally designed by Le Corbusier, a well-known architect of the 20th century. In 1998, the seismic isolation retrofit was used to renovate this museum . The seismic isolation retrofit was first implemented in Japan at the National Museum of Western Art in Tokyo.

Since the 1980s, the seismic isolation method has been studied and used in buildings. The columns and beams of the conventional earthquake-resistant design are constructed to be sturdy and adaptable enough to withstand earthquake motions. This method is used to design and construct the vast majority of buildings. When a typical building experiences a powerful earthquake, it may be able to avert collapse and save its occupants' lives. However, the building's furnishings and equipment will almost certainly fall, and the building's structural components may sustain significant damage.

Under the building, isolation devices are installed to separate the structure from earthquake motions. The building's shaking can be significantly reduced with seismic isolation. Laminate rubber bearings have made it possible to use the seismic isolation method.

In order to lessen the bearings' deformation in the event of an earthquake, the seismic isolation method requires the installation of energy-absorbing devices alongside laminated rubber bearings. Layers of rubber and steel make up a lead-rubber bearing, which has a solid lead plug in the center. The lead plug is a device for absorbing energy. Special rubbers are used in high-damping rubber bearings to significantly dampen motion and dissipate energy.

Across India the feasibility of using seismic isolators needs to be studied carefully. A lot of buildings can use this method to shield themselves from the severe impact of earthquakes. These retrofits should also be a part of the smart cities mission to make existing and upcoming cities smarter.

Though 81 percent of the strongest earthquakes on earth occur along the circum-Pacific seismic belt, which is often referred to as the Ring of Fire. The Alpine-Himalayan seismic belt extending up to Andaman-Nicobar island region, is also known to be one of the seismically active belts of the world. Due to a surge in development activities brought on by urbanisation, economic expansion, and the globalisation of India's economy, the risk of earthquakes has increased. After an earthquake, severe financial losses that cause the local or regional economy to collapse could have long-term negative effects on the entire nation. In the event that a megacity like Delhi or Mumbai is affected by an earthquake, this effect would be amplified even further. All the elements of the built environment including tall buildings have to constantly remain in the shadow of tremors which can cause havoc, in such cases use of seismic isolators can reduce the intensity of damage caused by an earthquake and minimise the loss of life and property. Seismic isolation is the process of installing isolation devices beneath a building to shield it from major earthquakes. Japan has used it to good effect. The number of seismic isolated buildings exceeds 4000. The National Museum of Western Art in Tokyo was built in 1958 by Shimizu Corporation and was originally designed by Le Corbusier, a well-known architect of the 20th century. In 1998, the seismic isolation retrofit was used to renovate this museum . The seismic isolation retrofit was first implemented in Japan at the National Museum of Western Art in Tokyo. Since the 1980s, the seismic isolation method has been studied and used in buildings. The columns and beams of the conventional earthquake-resistant design are constructed to be sturdy and adaptable enough to withstand earthquake motions. This method is used to design and construct the vast majority of buildings. When a typical building experiences a powerful earthquake, it may be able to avert collapse and save its occupants' lives. However, the building's furnishings and equipment will almost certainly fall, and the building's structural components may sustain significant damage. Under the building, isolation devices are installed to separate the structure from earthquake motions. The building's shaking can be significantly reduced with seismic isolation. Laminate rubber bearings have made it possible to use the seismic isolation method. In order to lessen the bearings' deformation in the event of an earthquake, the seismic isolation method requires the installation of energy-absorbing devices alongside laminated rubber bearings. Layers of rubber and steel make up a lead-rubber bearing, which has a solid lead plug in the center. The lead plug is a device for absorbing energy. Special rubbers are used in high-damping rubber bearings to significantly dampen motion and dissipate energy. Across India the feasibility of using seismic isolators needs to be studied carefully. A lot of buildings can use this method to shield themselves from the severe impact of earthquakes. These retrofits should also be a part of the smart cities mission to make existing and upcoming cities smarter.

Next Story
Real Estate

Kolkata鈥檚 luxury housing market sees price growth amid mixed trends

A new study by Nklusive reveals that Kolkata鈥檚 luxury residential market (Rs 5鈥�10 crore) recorded a 33 per cent year-on-year rise in supply and a 52 per cent increase in sales in calendar year 2024 (CY24). South Kolkata led with 78 per cent of the segment鈥檚 supply. The average price rose by 6 per cent鈥攆rom Rs 17,519 to Rs 18,600 per sq ft鈥攚hile unsold inventory grew by 15 per cent. Monthly absorption improved from 2 to 3 units.In contrast, the ultra-luxury segment (Rs 10 crore and above) experienced a 17 per cent decline in supply and a 30 per cent fall in sales. Central Kolkata acco..

Next Story
Infrastructure Transport

New Expressway to Cut Pune-Bengaluru Travel Time by Half

The upcoming Pune-Bengaluru Expressway is expected to significantly improve connectivity and economic opportunities across Maharashtra and Karnataka. This 700-kilometre greenfield, access-controlled highway will cut the travel time between Pune and Bengaluru from 15 hours to just 7 hours, facilitating easier movement for both commuters and businesses. Starting from Bommanal in Karnataka鈥檚 Athani Taluk, the expressway will traverse important districts such as Belagavi, Bagalkot, and Jamakhandi. It will then enter Maharashtra at Kanjle, connect with the proposed Pune Ring Road, and pass throug..

Next Story
Infrastructure Transport

Nagpur鈥檚 Koradi Naka to Get Y-Shaped Flyover for Safer, Smoother Traffic

To alleviate traffic congestion and enhance safety at Koradi Naka in Nagpur, a Y-shaped flyover is currently being constructed on National Highway 47. Demolition work has already commenced, with the main construction scheduled to start on June 20, 2025.The project, costing Rs 430.37 billion, involves building a 1,090-meter-long flyover that will connect Farsa, the Mahadula Railway Overbridge (ROB), and Bokhara Road, and will also feature an underpass. The existing structure will be repurposed into a service road to facilitate local traffic.Koradi Naka has been identified as a significant "blac..

Advertisement

Advertisement

Subscribe to Our Newsletter

Get daily newsletters around different themes from Construction world.

STAY CONNECTED

Advertisement

Advertisement

Advertisement

Advertisement