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
Contractors | Feb 3, 2015
Nonresidential construction spending expands in December 2014
Seven of 16 nonresidential construction subsectors posted increases in spending in December on a monthly basis.
Office Buildings | Feb 3, 2015
Bjarke Ingels' BIG proposes canopied, vertical village for Middle East media company
The tensile canopy shades a relaxation plaza from the desert sun.
Fire-Rated Products | Feb 3, 2015
AIA course: Fire and life safety in large buildings
Earn 1.0 AIA/CES learning units by studying this article and successfully completing the online exam.
Multifamily Housing | Feb 2, 2015
D.C. developer sees apartment project as catalyst for modeling neighborhood after N.Y.'s popular High Line district
It’s no accident that the word “Highline” is in this project’s name. The goal is for the building to be a kind of gateway into the larger redevelopment of the surrounding neighborhood to resemble New York’s City’s trendy downtown Meatpacking District, through which runs a portion the High Line elevated park.
Healthcare Facilities | Feb 1, 2015
7 new factors shaping hospital emergency departments
A new generation of highly efficient emergency care facilities is upping the ante on patient care and convenience while helping to reposition hospital systems within their local markets.
Multifamily Housing | Jan 31, 2015
5 intriguing trends to track in the multifamily housing game
Demand for rental apartments and condos hasn’t been this strong in years, and our experts think the multifamily sector still has legs. But you have to know what developers, tenants, and buyers are looking for to have any hope of succeeding in this fast-changing market sector.
Multifamily Housing | Jan 31, 2015
20% down?!! Survey exposes how thin renters’ wallets are
A survey of more than 25,000 adults found the renters to be more burdened by debt than homeowners and severely short of emergency savings.
Multifamily Housing | Jan 31, 2015
Production builders are still shying away from rental housing
Toll Brothers, Lennar, and Trumark are among a small group of production builders to engage in construction for rental customers.
Energy Efficiency | Jan 28, 2015
An urban wind and solar energy system that may actually work
The system was designed to take advantage of a building's air flow and generate energy even if its in the middle of a city.
Multifamily Housing | Jan 27, 2015
Multifamily construction, focused on rentals, expected to slow in the coming years
New-home purchases, which recovered strongly in 2014, indicate that homeownership might finally be making a comeback.