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
Giants 400 | Aug 21, 2022
Top 110 Architecture/Engineering Firms for 2022
Stantec, HDR, HOK, and Skidmore, Owings & Merrill top the rankings of the nation's largest architecture engineering (AE) firms for nonresidential and multifamily buildings work, as reported in Building Design+Construction's 2022 Giants 400 Report.
Giants 400 | Aug 19, 2022
2022 Giants 400 Report: Tracking the nation's largest architecture, engineering, and construction firms
Now 46 years running, Building Design+Construction's 2022 Giants 400 Report rankings the largest architecture, engineering, and construction firms in the U.S. This year a record 519 AEC firms participated in BD+C's Giants 400 report. The final report includes more than 130 rankings across 25 building sectors and specialty categories.
| Aug 19, 2022
Cuningham appoints Jacqueline Dompe as new Chief Executive Officer
Cuningham, a national design firm, is thrilled to announce the appointment of Jacqueline Dompe as the firm’s Chief Executive Officer (CEO).
| Aug 19, 2022
Future sea rise could expose 720,000 more people on East Coast to flooding
An analysis by NPR based on modeling from the National Hurricane Center for New York City, Washington, D.C., and Miami-Dade County found future sea rise could expose about 720,000 more people to damaging floods later this century.
| Aug 19, 2022
Manassas Museum renovated to reimagine a civic design & engage the community
Manassas, VA has recently added to its historic Manassas Museum.
| Aug 18, 2022
U.S. Treasury moves to boost affordable housing
The Department of the Treasury recently announced new guidance to “increase the ability of state, local, and tribal governments to use American Rescue Plan (ARP) funds to boost the supply of affordable housing in their communities,” according to a news release.
| Aug 18, 2022
The Illinois Institute of Technology restores three Mies van der Rohe buildings
With Dirk Denison Architects and Gilbane Building Company, the Illinois Institute of Technology has recently completed a $70 million housing project that has restored three Ludwig Mies van der Rohe buildings.
Multifamily Housing | Aug 17, 2022
California strip mall goes multifamily residential
Tiny Tim Plaza started out as a gas station and a dozen or so stores. Now it’s a thriving mixed-use community, minus the gas station.
| Aug 17, 2022
Focusing on building envelope design and commissioning
Building envelope design is constantly evolving as new products and assemblies are developed.
| Aug 17, 2022
New York to deploy 30,000 window-sized electric heat pumps in city-owned apartments
New York officials recently announced the state and the city will invest $70 million to roll out 30,000 window-sized electric heat pumps in city-owned apartments.