A5025345647- Seismic Performance and Analysis
- Structural Behavior of Reinforced Concrete
- Geotechnical Engineering and Underground Structures
- Geotechnical Engineering and Soil Stabilization
- Structural Response to Dynamic Loads
- Concrete Corrosion and Durability
- Structural Engineering and Vibration Analysis
- Structural Load-Bearing Analysis
- Geotechnical Engineering and Soil Mechanics
- Vibration and Dynamic Analysis
- Structural Health Monitoring Techniques
- Dam Engineering and Safety
- Vibration Control and Rheological Fluids
- Infrastructure Maintenance and Monitoring
- Elevator Systems and Control
- Power Systems Fault Detection
- Probabilistic and Robust Engineering Design
- Hydraulic and Pneumatic Systems
- Earthquake and Tsunami Effects
- Earthquake and Disaster Impact Studies
- Fluid Dynamics and Vibration Analysis
University of British Columbia
2022-2024
Tongji University
2018-2024
Summary This paper presents results of one‐g shake‐table tests on scoured pile‐group‐supported bridge models in saturated (liquefiable) and dry (nonliquefiable) sands. The primary objective is to reveal the influence liquefaction seismic demands failure mechanism bridges. To this end, two identical models, each consisting a 2 × reinforced concrete pile‐group with center‐to‐center spacing 3 times pile diameter, cap single pier lumped iron block, were constructed embedded into sands,...
Scour can increase the earthquake-induced damage in pile group foundations. Quantifying parameter sensitivity of seismic performance for scoured foundations is essential optimal design and retrofit bridges located seismic-prone regions. Such quantification requires numerical models that are computationally efficient accurate describing mechanical behavior associated with complex soil–foundation–structure interaction these systems. This study proposes an finite-element model (FEM) groups...
Scouring of pile group foundations is a common phenomenon for cross-river bridges and can produce significant damage in earthquake-prone regions. This study experimentally investigated the seismic failure mechanism postearthquake vertical load-carrying capacity scoured foundations. Three identical 2 × 3 reinforced concrete (RC) specimens were embedded homogeneous medium density sand with an overall scour depth equal to five times diameter single pile, then subjected lateral cyclic loads...
The belowground portion of extended pile-shaft-supported bridges is usually prone to earthquake-induced damage during earthquake shakings. unobservable pile below the ground surface makes it difficult and time-consuming estimate functionality loss these damaged decide whether reopen them for emergency traffic after an earthquake. Therefore, reliable rapid evaluation postearthquake vertical load-carrying capacity shafts essential recovery. To this end, one pile-shaft specimen in homogeneous...
This study performs a nationwide expert-opinion survey in Mainland China to establish component restoration models of highway bridges toward high-fidelity resilience assessment. To this end, questionnaire based on damage states is designed collect expert opinions key variables the models, including loss functionality, traffic decision, idle time, repair strategy, and recovery time. More importantly, introduces concept repair-induced functionality into addition traditional earthquake-induced...
Abstract Drilled shafts with a larger diameter than columns are frequently adopted as the foundation of highway bridge due to their superior economic efficiency and lower impact on existing facilities in urban built‐up area. Different section dimensions lead socket connection between column oversized shaft noncontact lap splice longitudinal bars. The force‐transfer mechanism failure process column‐to‐drilled connections were deeply revealed this study. Detailed FE models developed at Diana...
Abstract The shortcomings of segmentally assembled round‐end hollow‐section piers (SRHPs), such as weak segment joints and poor energy‐dissipation capacity, have limited their application in high‐intensity earthquake regions. Therefore, this article particularly focuses on the seismic performance SRHPs. Three high‐speed railway bridges are designed, which equipped with three different types (RHPs): cast‐in situ RHP (CRHP), bar (E‐SRHP), low‐yield point steel connection buckles (L‐SRHP)....
<p>To investigate the seismic performance of transverse steel damper system (TSDSS), a shake table test is conducted on 1/35-scale model Sutong Bridge, long span cable-stayed bridge with main 1088 m. During test, two types structural systems are considered, one TSDSS, an energy dissipation dampers (TSDs) placed at deck-tower/bent connections, and other fixed transversally bearings. Two ground motions for different site (i.e., hard soft) selected as inputs. Results show...