Tendency toward using precast segmental construction methods is increasing in the world due to the reduction of construction time and cost. Considering the precast construction of this type of bridge and its post-tensioning contact on segment joints, it is expected that under earthquake excitation, the bridge behavior will be affected by the joint operation. According to the high weight of the deck and ease of the construction process by lacking frame-works, the previous studies have paid more attention to prefabrication in the super-structure than the sub-structure. Nevertheless, in recent years, researchers focus their laboratory studies on segmental piers with re-centering capability that dissipate high energy with low residual drift than the corresponding conventional monolithic sub-structure, especially after the 1995 Kobe earthquake. I'm trying to investigate the effects of 3-dimensional excitation of earthquakes on these types of bridges including sub-structure and super-structure by non-linear time history analysis.
Investigation on cable-stayed bridges (highways and railways) constructed by the precast segmental methods under various loading scenarios such: seismic, wind, ice, service and etc.
Weighing-in-motion (WIM) by weigh bridge: WIM system is data collection equipment collects both truck volume and load spectra, but the equipment is more expensive to obtain and more difficult to install and operate than equipment that can only count and classify vehicles.
Therefore, highway agencies routinely use a combination of WIM and simpler vehicle classification equipment to collect the data they require for pavement design.
