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RISA Quasi-Static Mechanics Analysis of Three-Dimensional Nanoscale Surface Polishing
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A quasi-static mechanics analysis of nanoscale surface polishing that provides insight into the surface topography evolution and the removal of material at the asperity level is presented. The ...
Wall and Ground Movements due to Deep Excavations in Shanghai Soft Soils
Publisher: American Society of Civil Engineers
Abstract: An extensive database of 300 case histories of wall displacements and ground settlements due to deep excavations in Shanghai soft soils were collected and analyzed. The mean values of the maximum lateral displacements of ...
Prediction of Mechanical Efficiency of Parallel-Axis Gear Pairs
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A computational model is proposed for the prediction of friction-related mechanical efficiency losses of parallel-axis gear pairs. The model incorporates a gear load distribution model, a friction ...
Behavior of Grouted Anchors Subjected to Repeated Loadings in Field
Publisher: American Society of Civil Engineers
Abstract: This paper presents the results of full-scale repeated-loading tests performed on three prestressed and six passive anchors grouted to various lengths in a rock mass. Different levels of prestress load, ranging from 22% ...
Sensitivity Analysis and Prediction Method for Water Inflow of Underground Oil Storage Caverns in Fractured Porous Media
Publisher: ASCE
Abstract: A sensitivity analysis method is proposed for the water inflow assessment and prediction of underground water-sealed oil storage caverns in fractured porous media. First, sensitivity analysis was carried out based on the ...
Transit-Oriented Land Planning Model Considering Sustainability of Mass Rail Transit
Publisher: American Society of Civil Engineers
Abstract: With the acceleration of urbanization, the mass rail transit (MRT) is developing rapidly in China. However, some unsustainable problems are brought to many metropolitan governments, such as the expensive costs of MRT ...
Design and Performance of Large Excavations for Shanghai Hongqiao International Airport Transport Hub Using Combined Retaining Structures
Publisher: American Society of Civil Engineers
Abstract: As an important add-on to Shanghai Hongqiao International Airport, the Shanghai Hongqiao International Airport transport hub is the biggest transport center in China. The transport hub consists of interchange stations for ...
Buffering Effect of Overlying Sand Layer Technology for Dealing with Rockfall Disaster in Tunnels and a Case Study
Publisher: ASCE
Abstract: An overlying sand layer combined with a concrete arch operates as a buffering structure for dealing with rockfall disasters in tunnel construction, especially through karst and weak strata. However, the buffering effect ...
Mechanics Criterion of Water Inrush from the Coal Floor under Influence of Fault and Its Engineering Application
Publisher: American Society of Civil Engineers
Abstract: In order to investigate the impact of fault on the stability of the water-resisting layer of the coal floor, the critical water pressure formula of the water-resisting layer failure under the influence of fault is deduced ...
Effect of Density, Trace Length, Aperture, and Direction Angle on Permeability Performance of Fracture Networks
Publisher: ASCE
Abstract: A fractured rock mass was characterized by strong heterogeneity, discontinuity, and anisotropy. The study of flow in a fractured rock mass was a complex and challenging task. As the main seepage channels of a fractured ...