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
Codes and Standards | Apr 19, 2019
Notre Dame fire highlights danger of renovating historic structures
The devastating fire at Notre-Dame de Paris is the latest blaze to damage or destroy historic buildings while undergoing renovations. It highlights how vulnerable such structures are to fire while undergoing repairs.
Codes and Standards | Apr 19, 2019
Developers and owners can now join AIA 2030 Commitment
Organization offers tools and resources for working toward net-zero design.
Codes and Standards | Apr 19, 2019
New method of manufacturing cement removes CO2 from the air
Breakthrough could have significant impact on reducing greenhouse gas emissions.
Codes and Standards | Apr 12, 2019
Deadline nears on New York City sprinkler requirement for tall office buildings
The mandate applies to all buildings regardless of when constructed.
Codes and Standards | Apr 8, 2019
LEED v4.1 now available for cities, communities, residential/homes
The rating system emphasizes performance monitoring, fully integrated design, social equity, and human health.
Market Data | Apr 8, 2019
Engineering, construction spending to rise 3% in 2019: FMI outlook
Top-performing segments forecast in 2019 include transportation, public safety, and education.
Codes and Standards | Apr 5, 2019
Manhattan expected to adopt congestion pricing plan for automobiles
New York would be first U.S. city to charge drivers extra for downtown motoring.
Codes and Standards | Apr 4, 2019
Chicago makes major building code overhaul
Previous comprehensive changes were done 70 years ago.
Codes and Standards | Apr 3, 2019
Construction advanced materials makers can enhance industry efficiency with technology
Integration of new IT approaches in construction with new materials has potential to enhance sustainability, alleviate worker shortage.
Codes and Standards | Apr 2, 2019
Open offices reduce collaboration among employees
Counterintuitive finding makes value of wide open workspaces questionable.