Study on the dynamic characteristics of soft soil.
Feng Qiao1, JingShan Bo1,2, WenHao Qi1
1Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration Harbin 150080 China.
RSC Advances
|May 2, 2022
Summary
This study analyzes Tianjin
Area of Science:
- Geotechnical Engineering
- Soil Mechanics
- Coastal Geology
Background:
- Soft soil foundations are prevalent in coastal China, particularly in Tianjin.
- Rapid urban development in Tianjin necessitates understanding soft soil risks for building safety.
Purpose of the Study:
- To statistically analyze the physical and dynamic properties of Tianjin's soft soil.
- To provide range values for these properties.
- To assess the impact of soil properties on building safety and design.
Main Methods:
- Statistical analysis of soft soil physical properties.
- Experimental analysis of dynamic properties under varying conditions (consolidation time, ratio, effective confining pressure).
- Development of a shear wave velocity model based on burial depth.
- Analysis of kinetic parameters' influence on design response spectrum.
Main Results:
- Identified correlations between physical properties of soft soil (excluding liquidity index).
- Quantified the effects of consolidation and pressure on dynamic shear modulus and damping ratios.
- Established a shear wave velocity model for regional clay and silty clay.
- Determined the influence of kinetic parameters on design response spectrum.
Conclusions:
- The physical and dynamic properties of Tianjin's soft soil have been characterized.
- Understanding these properties is crucial for mitigating risks in construction on soft soil.
- The findings offer valuable data for geotechnical engineers and researchers working with soft soils in coastal urban areas.
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