Humidification vibration deformation behavior of intact loess

Abstract

A parameter, known as the parameter of humidification vibration deformation, was proposed, describing quantitatively the impact of water content on vibration settlement deformation, and its relationship with humidification water content, dynamic shear stress peak value, initial consolidation stress and vibration frequency was built. The result shows that 1) the parameter of humidification vibration deformation increases with the vibration shear stress peak value increasing. 2) The humidification water content has significant influence on the curve of the parameter of humidification vibration deformation and the peak vibration shear stress. When the humidification water content is low, the curve increases slowly. However, when the humidification water content is high, the curve increases rapidly. 3) Initial consolidation stress has significant influence on the humidification vibration deformation coefficient. When initial consolidation stress is not large enough to destroy the loess structure, with initial consolidation stress increasing, the humidification vibration deformation coefficient decreases. On the contrary, the humidification vibration deformation coefficient increases with initial consolidation stress increasing. 4) With the increase of vibration time, the parameter of humidification vibration settlement shows an increasing trend overall. The initial dynamic shear stress peak value and humidification water content all have significant effects on the curve of the parameter of humidification vibration settlement and vibration time. However, the humidification water content is even more significant.

Keywords

intact loess / vibration deformation / humidification vibration deformation coefficient

References

[1] FedaJ. Structural stability of subsident loess soils from Praha-Dejvice [J]. Engineering Geology, 1966, 1(3): 201-219

[2] AbedA A, VermeerP A. Numerical simulation of unsaturated soil behaviour [J]. International Journal of Computer Applications in Technology, 2009, 34(1): 2-12

[3] RogersC D F, DijkstraT A, SmalleyI J. Hydro consolidation and subsidence of loess: Studies from China, Russia, North America and Europe [J]. Engineering Geology, 1994, 37(2): 83-113

[4] YuanZ-x, WangL-m, WangQian. Collapsibility and seismic settlement of loess [J]. World Earthquake Engineering, 2010, 26(Supplement): 94-98

[5] LiuZ-dianLoess mechanics and engineering [M], 1996Xi’anShaanxi Technology Press107-114

[6] XieD-yi. Exploration of some new tendencies in research of loess soil mechanics [J]. Chinese Journal of Geotechnical Engineering, 2001, 23(1): 3-13

[7] WuZ-h, FangYan. The seismic subsidence features with humidification of intact loess [C]. Third National Conference on Soil Mechanics Proceedings, 1990ShanghaiTongji University Press285-290

[8] ZhangZ-h, LuoY-sheng. Relation of dynamic deformation characteristic and static deformation characteristic of loess under different moisture conditions [J]. Bulletin of Soil and Water Conservation, 2003, 23(3): 28-32

[9] WangL-minLoess dynamics [M], 2003BeijingEarthquake Press47-60

[10] XuS-h, WangL-m, SunJ-j, WuZ-jian. Study on the influence of water content to subsidence characters of loess [J]. Northwestern Seismological Journal, 2010, 32(1): 30-35

[11] LuoY-s, XieD-y, DongW-m, ChenC-li. Comparative analysis of the vibration deformation behavior of the loess from the different regions [J]. Journal of Shaanxi Water Power, 2001, 17(1): 4-7

[12] QiJ-linSoil structure cordially characteristic and in research on its quantitative parameter [D], 1999Xi’anXi’an University of Technology

[13] HuangW-xiEngineering properties of soils [M], 1983BeijingWater Conservancy and Electric Power Press391-404