Facility

MICROTREMOR OBSERVATION

Microtremor observation is one of the seismic survey techniques that could be applied for various studies such as seismic microzonation, seismic site effect and classification and dynamic properties of ground and structures. The laboratory is equipped with six sets of portable microtremor measuring instruments consisting of KINKEI type velocity sensor, AK data logger and GPS time sensor and one set of SDR NewPIC+ consisting of a main unit and a sensor unit. Microtremor measurement is conducted with real time viewing on a computer. Both single point and array observation can be carried out.

loading frames

Three loading frames are available in Heavy Structure Laboratory that can perform vertical, horizontal and combination of vertical and vertical loading system for both monotonic and cyclic loading patterns. The capacity varies from 45 tonnes to 100 tonnes. The loading frames are located on the strong floor of the laboratory.

A test frame fabricated for testing sample subjected to both lateral and vertical loads for a maximum working capacity of 50 tonnes. The device has a clear working height of 2.7m and clear distance between columns is 1.75mm which is capable to test up to medium scale model subjected to both lateral and vertical loads.

UNI-AXIAL shaking table

A single-axis shaking table consists of a 3m by 3m steel platform is moved by a Shimadzu dynamic actuator with a load capacity of 30 tonnes and +/-50mm stroke controlled by computer. The device is equipped with a 10 tonnes overhead crane that can move in both the east-west and north-south directions. With 5m high ceiling, this device is capable to test up to medium scale model subjected to ground motion consists of various regular wave forms and earthquake ground motions.