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RISManaging Safety Hazards in Metro Subway Projects under Complex Environmental Conditions
Publisher: ASCE
Abstract: During the expansion of metro subway projects, numerous safety hazards occur due to geotechnical site conditions, the complexity of the construction work, the concealment of the project, and the lengthy construction period. ...
Late Payment and Nonpayment Encountered by Contracting Firms in a Fast-Developing Economy
Publisher: American Society of Civil Engineers
Abstract: Late payment and nonpayment is explicitly recognized as a widespread problem in the construction sector and recurs in project after project. Although the Construction Industry Payment and Adjudication Act was enacted in ...
Damping Force Analysis and Optimization of a Lunar Lander with MRF
Publisher: ASCE
Abstract: Controllable lunar landers with magnetorheological fluid (MRF) damper have become a hot topic of research. However, limited research studies have been performed on the damping force analysis of MRF under high-velocity ...
Maximum Superstructure Response of Sliding-Base Structures under Earthquake Excitation
Publisher: ASCE
Abstract: Sliding-base (SB) systems are efficient for protecting low-rise buildings in high-seismicity rural areas. The normalized peak pseudoacceleration (NPPA) of one-story SB structures under three-component earthquake excitation ...
Seismic Response from Centrifuge Model Tests of a Scoured Bridge with a Pile-Group Foundation
Publisher: ASCE
Abstract: A series of seismic centrifuge tests were performed on an RC girder-type bridge with a 3 × 3 pile-group foundation embedded in dry sand to investigate the seismic behavior under various scour conditions. Based on the ...
Modeling of Initial Stresses and Seepage for Large Deformation Finite-Element Simulation of Sensitive Clay Landslides
Publisher: ASCE
Abstract: Groundwater seepage and an increased lateral earth pressure coefficient at rest (K0) increase the potential for triggering large-scale landslides in sensitive clays. After the failure is triggered, the successive retrogressive ...
Simplified Added-Mass Model for Evaluating the Response of Rectangular Hollow Bridge Piers under Earthquakes
Publisher: ASCE
Abstract: A simplified added-mass model is proposed in this paper for evaluating the seismic response of rectangular hollow piers in deep water, which are widely used in railway bridges. For this purpose, the accurate and concise ...
Investigating the Cushion Effect of Using Pebble Gravel in Bridge Foundations through Laboratory Cyclic Direct Shear Tests
Publisher: ASCE
Abstract: Recently, isolated foundations with cushions have gained more attention in bridge design, especially for cross-sea bridges in deep water 50 meters or more in depth. This foundation has become a good choice for bridges ...
Estimation of X-Band Polarimetric Radar Attenuation and Measurement Uncertainty Using a Variational Method
Publisher: American Meteorological Society
Abstract: variational algorithm for estimating measurement error covariance and the attenuation of X-band polarimetric radar measurements is described. It concurrently uses both the differential reflectivity ZDR and propagation phase ...
Vertical Modification on Depth-Integrated Ice Shelf Water Plume Modeling Based on an Equilibrium Vertical Profile of Suspended Frazil Ice Concentration
Publisher: American Meteorological Society
Abstract: AbstractThe ice shelf water (ISW) plume is a prevalent phenomenon at the base of an ice shelf or sea ice adjacent to the ice shelf front. Such plumes may become supercooled and deposit marine ice when they rise. In the ...