Sritharan, the Wilson Engineering Professor of Civil, Construction and Environmental Engineering, spent more than a week in Christchurch as part of a team from the Earthquake Engineering Research Institute’s Learning from Earthquakes Program. The team’s reconnaissance trip was supported by the National Science Foundation.
“I saw more damage than I expected to see,” said Sritharan, who recently won a three-year, $1.2 million grant from the National Science Foundation to study how walls that are safely allowed to rock during earthquakes can reduce damage to buildings.
In Christchurch, Sritharan said unreinforced brick masonry buildings built in the 1930s and ’40s suffered significant damage. Older buildings that had been upgraded to withstand earthquakes, however, resisted collapse and saved lives and property. Even so, several of those buildings will require significant repair or even replacement.
He said newer buildings tended to survive the Christchurch earthquake if they were regular in shape. Buildings that weren’t regular or symmetric tended to suffer more damage.
Researchers take these reconnaissance trips to study the real impacts of earthquakes on buildings. Teams make a quick survey of damage, document important findings and assess the need for new areas of research while helping with any local needs.
The researchers’ goal is to reduce the risks of earthquakes by advancing the science of earthquake engineering and advocating realistic measures to reduce earthquake damage.
Sritharan said he left New Zealand with three ideas for further study: the interaction of soils and structures during earthquakes, the role structural symmetry plays in resisting earthquake loads and the significance of vertical accelerations in this and other earthquakes.
And, Sritharan said the emergency response from New Zealand authorities was very effective. There was adequate control. There was no looting. There were few security problems. And so Sritharan said there are civil defense lessons to be learned from the Christchurch earthquake as well.
Mike Krapfl | Newswise Science News
Modeling magma to find copper
13.01.2017 | Université de Genève
What makes erionite carcinogenic?
13.01.2017 | Friedrich-Schiller-Universität Jena
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).
Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...
Many pathogens use certain sugar compounds from their host to help conceal themselves against the immune system. Scientists at the University of Bonn have now, in cooperation with researchers at the University of York in the United Kingdom, analyzed the dynamics of a bacterial molecule that is involved in this process. They demonstrate that the protein grabs onto the sugar molecule with a Pac Man-like chewing motion and holds it until it can be used. Their results could help design therapeutics that could make the protein poorer at grabbing and holding and hence compromise the pathogen in the host. The study has now been published in “Biophysical Journal”.
The cells of the mouth, nose and intestinal mucosa produce large quantities of a chemical called sialic acid. Many bacteria possess a special transport system...
UMD, NOAA collaboration demonstrates suitability of in-orbit datasets for weather satellite calibration
"Traffic and weather, together on the hour!" blasts your local radio station, while your smartphone knows the weather halfway across the world. A network of...
Fiber-reinforced plastics (FRP) are frequently used in the aeronautic and automobile industry. However, the repair of workpieces made of these composite materials is often less profitable than exchanging the part. In order to increase the lifetime of FRP parts and to make them more eco-efficient, the Laser Zentrum Hannover e.V. (LZH) and the Apodius GmbH want to combine a new measuring device for fiber layer orientation with an innovative laser-based repair process.
Defects in FRP pieces may be production or operation-related. Whether or not repair is cost-effective depends on the geometry of the defective area, the tools...
10.01.2017 | Event News
09.01.2017 | Event News
05.01.2017 | Event News
16.01.2017 | Trade Fair News
16.01.2017 | Automotive Engineering
16.01.2017 | Life Sciences