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RISUnloading Behaviors of Shale under the Effects of Water Through Experimental and Numerical Approaches
Publisher: ASCE
Abstract: During tunnel excavations through shale formations in central and southwest China, engineering problems, such as large deformations and distorted arches, were encountered due to radial stress unloading and groundwater ...
Research on the Characteristics and Evolution of Urban Spatial Structures under Complex Terrain Conditions: Taking 71 Typical Cities in China as an Example
Publisher: American Society of Civil Engineers
Abstract: In the past, research on urban spatial structure under complex terrain conditions has mostly remained at the level of analyzing a specific city and a single type of terrain, the limitations of the research scope and ...
Brittleness Effect on Acoustic Emission Characteristics of Rocks Based on a New Brittleness Evaluation Index
Publisher: ASCE
Abstract: Brittleness has an important effect on the deformation and failure behavior of rocks. In this study, a brittleness evaluation index (Bp) based on the prepeak stress–strain curves of rock was proposed, and its effectiveness ...
Effect of Carbonation Mixing on CO2 Uptake and Strength Gain in Concrete
Publisher: American Society of Civil Engineers
Abstract: Concrete is well known for its capacity to sequester carbon dioxide (CO2) through carbonation curing. If carbonation mixing can be used to introduce CO2 during concrete mixing, the process is able to enhance the carbon ...
Electromagnetic Wave-Absorbing Property and Mechanism of Cementitious Composites with Different Types of Nano Titanium Dioxide
Publisher: ASCE
Abstract: Ten types of nano TiO2 (NT) were used to endow cementitious composites with the electromagnetic absorbing property. The influences caused by sample thickness, the size, and surface treatment of NT on the electromagnetic ...
Long-Term Field Subgrade Monitoring and Quantitative Hazard Assessment along the Qinghai–Tibet Highway in the Permafrost Region
Publisher: American Society of Civil Engineers
Abstract: Herein, long-term field subgrade monitoring was conducted along the Qinghai–Tibet Highway (QTH) on the Qinghai–Tibet Plateau (QTP) to investigate the sustainable service performance of permafrost highway subgrade and ...
Evolutionary Game Analysis of the Opportunistic Behaviors in PPP Projects Using Whole-Process Engineering Consulting
Publisher: American Society of Civil Engineers
Abstract: Opportunistic behaviors are common in public–private partnership (PPP) projects. The contractor involvement in a whole project lifecycle is essential to ensure successful project planning, delivery, and operation, namely, ...
Clarifying Unsafe Behaviors of Construction Workers through a Complex Network of Unsafe Behavior Chains
Publisher: American Society of Civil Engineers
Abstract: Numerous studies indicate that unsafe behaviors of construction workers (UBCW) are the direct causes of most construction safety incidents. To unveil the interconnections among unsafe behaviors and the underlying mechanisms ...
Parameter Identification–Based Attitude Stabilization Control of Spacecraft with Multiaccessories during Orbital Maneuver
Publisher: American Society of Civil Engineers
Analytic Approach and Landing Guidance through a Novel Time-Varying Sliding Mode Control Method
Publisher: American Society of Civil Engineers
Abstract: In this paper, a nonlinear guidance law is developed for the approach and landing (A&L) phase of a reusable launch vehicle (RLV). First, a novel time-varying sliding mode control (TVSMC) technique is introduced. The main ...