Research at Case Western Reserve University has found that buildings that rock during an earthquake and return to plumb would withstand seismic shaking better than structural designs commonly used today in vulnerable zones of California and elsewhere.
Those buildings would also be more easily and cheaply repaired and could be put back into use faster, said Michael Pollino, an assistant civil engineering professor at Case School of Engineering. The computer model research suggests optimal sizes for damping devices and steel yielding devices that dissipate the energy of a quake.
Pollino’s model compares rocking steel-braced frames to current earthquake standards used in low- to mid-rise buildings. "Currently, engineers are designing low-rise structures for an earthquake that has a 10% chance of occurring in a 50-year-lifetime," Pollino said. "We accept there will be damage, but no collapse or loss of life. But what about an event that has a 50% chance of occurring? You may still have to tear the building down afterward.”
Pollino and other researchers are finding advantages to the design, which has not yet made it into practice. He and colleagues are discussing forming a technical committee of civil engineers that would advance the technology into practice. Pollino is now applying for funding to begin physically testing designs in the university's structures laboratory.
Related Stories
| Jan 4, 2013
Manchester, England building achieves highest BREEAM rating in U.K.
One Angel Square in Manchester, England, is the highest scoring outstanding building for the Building Research Establishment Environmental Assessment Method (BREEAM) in the U.K.
| Dec 27, 2012
Pentagon eases leasing standards established in 9/11 aftermath
The Pentagon has eliminated the stringent real estate leasing standards it put into place following the Sept. 11, 2001, terrorist attacks, reverting back to a version widely used by federal civilian agencies.
| Dec 27, 2012
Google provides USGBC with $3 million grant to transform building materials industry and indoor health
Google has contributed a $3 million grant to the U.S. Green Building Council (USGBC) to help transform the building materials industry and accelerate the creation of healthier indoor environments.
| Dec 27, 2012
Former industrial French city reshapes itself according to ambitious green standards
Nantes has a strong commitment to address challenges such as urban sprawl and carbon dioxide emissions.
| Dec 27, 2012
New York City law tracking building energy use yields surprises
A legally mandated report that tracks the energy use of New York City's largest buildings provides details about which buildings are achieving higher-than-expected energy efficiency, such as the Chrysler and Empire State buildings, as well as those that are performing poorly.
| Dec 27, 2012
New Jersey considers green roof mandate for state buildings
The New Jersey legislature is considering a bill that would require installation of green or blue roofs on state buildings that are at least 15,000 sf.
| Dec 20, 2012
AIA’s Healthier Communities Through Design showcases local policy initiatives
The American Institute of Architects released Local Leaders: Healthier Communities Through Design, a report that demonstrates the power of architecture to improve public health with policies that promote active living, accessibility, transit options, and better indoor air quality.
| Dec 20, 2012
China to build sustainable city for 180,000 from scratch
A 120-million sf urban development in China will be designed according to high green standards for about 180,000 residents.
| Dec 20, 2012
Air duct trade group urges maintenance, restoration professionals to avoid chemical cleaners
The National Air Duct Cleaners Association (NADCA) urges professionals to avoid using chemicals as a method for cleaning and maintaining air duct systems.
