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RISInfluence of Double-O-Tube Shield Rolling on Soil Deformation during Tunneling
Publisher: American Society of Civil Engineers
Abstract: One of the main disadvantages of the advanced tunneling technology of the double-O-tube (DOT) shield is unavoidable rolling of the shield machine during construction. In this study, the influence of the DOT shield rolling ...
Identification Method of Deformation Localization in DEM-Simulated Granular Geomaterials Based on Contact Deformations
Publisher: American Society of Civil Engineers
Abstract: Deformation localization of granular geomaterials is critical in analyzing the stability of earth structures. This paper presents a new and simple method for quantitatively identifying deformation localization in the ...
Crack Propagation and Coalescence Mechanism of a Rock Bridge between a Parallel Fissure Pair in a Direct Shear Test with Unloading Normal Stress
Publisher: ASCE
Abstract: To investigate crack propagation and the coalescence mechanism of a rock bridge under unloading condition induced by intensive excavation of rock mass, the direct shear test with unloading normal stress and corresponding ...
Development of a DEM-Based Method for Modeling the Water-Induced Failure Process of Rock from Laboratory- to Engineering-Scale
Publisher: ASCE
Abstract: The time-dependent hydromechanical behavior of rocks is crucial to assessing the long-term stability of rock engineering, such as reservoir rock slopes and underground waste storage facilities. This research aims at ...
Pullout Performance and Branching Effect of Radial Cables to Reinforce the Steep Fill–Bedrock Interfaces: Investigation of a Pullout Test and a Numerical Simulation
Publisher: ASCE
Abstract: Steep fill–bedrock interfaces usually appear in many filling soil infrastructures, such as airports, houses, and road embankments in mountainous areas, when the excavation of rock slopes is constrained. These interfaces ...
Failure Mechanism of Primary Support for a Shallow and Asymmetrically Loaded Tunnel Portal and Treatment Measures
Publisher: ASCE
Abstract: Shallow and asymmetrically loaded tunnels are very common in mountain tunnel portals, and localized excessive deformation, cracking, or even collapse often occur during the construction process. In this study, a shallow ...
Development of a Modeling Method and Parametric Study of Seepage-Induced Erosion in Clayey Gravel
Publisher: ASCE
Abstract: The aim of this study is to develop a method to simulate the behaviors of clayey gravel during water erosion by using computational fluid dynamics–discrete element method. The fluid phase was solved using the “fixed ...
Multi-Objective Optimization of Thermo-Ultrasonic Flip-Chip Bonding Process for High-Brightness Light Emitting Diodes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Flip-chip bonding is a kind of chip packaging technology, which can make fabricated chips lighter and smaller. Thermo-ultrasonic flip-chip bonding is a technology that directly joins gold pad ...
Shake-Table Testing of a Full-Scale 10-Story Resilient Mass Timber Building
Publisher: American Society of Civil Engineers
Abstract: As part of a collaborative research effort (The NHERI TallWood Project), an extensive shake table test program was undertaken on a full-scale 10-story mass timber building with a resilient posttensioned mass timber rocking ...