DOI: 10.1007/s11069-020-04085-7
论文题名: The study on loess liquefaction in China: a systematic review
作者: He S. ; Wang X. ; Fan H. ; Wang H. ; Ren R. ; Guo C.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 103, 期: 2 起始页码: 1639
结束页码: 1669
语种: 英语
中文关键词: Characteristics
; Loess liquefaction
; Loess saturation technology
; New theory
; Prevention methods
英文关键词: confining pressure
; consolidation
; damage mechanics
; dynamic response
; liquefaction
; loess
; reinforcement
; saturation
; seismic response
; seismicity
; soil mechanics
; soil-structure interaction
; China
英文摘要: Sandy soil liquefaction is common phenomena in engineering construction. However, in fact, saturated or nearly saturated loess liquefaction is also common phenomenon in loess area. In recent decades, large earthquakes around the world are frequent, loess is widely distributed worldwide, and loess liquefaction is one of the hot issues in loess dynamics. China has the most typical loess landform in the world, and Chinese scholars have done in-depth research on loess liquefaction. In this paper, the phenomena, mechanism, influencing factors, microscopic characteristics, evaluation methods and prevention methods of loess liquefaction in China are reviewed systematically. At the same time, improvement of loess saturation technology and new theory of loess liquefaction proposed by Chinese scholars are also analyzed. The results indicated that damages of foundations, landslides and collapses are the main phenomena of disasters caused by loess liquefaction; shear capacity of soil particles due to friction is close to zero during loess liquefaction; the main influencing factors of loess liquefaction are effective confining pressure, load frequency, cyclic stress ratio, saturation, over consolidation ratio; most of soluble salts have been dissolved, which is one of the main causes of loess liquefaction, and structure of loess particles has also been destroyed; evaluation methods of loess liquefaction mainly include the standard method and the Seed–Idriss simplified discriminant method; pore water pressure and strain conform to “A type curve” in loess liquefaction; pile foundation reinforcement, dynamic consolidation, chemical treatment are the main prevention methods of loess liquefaction. © 2020, Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168519
Appears in Collections: 气候变化与战略
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作者单位: School of Highway, Chang’an University, Xi’an, 710064, China; State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University, Shijiazhuang, 050043, China; School of Civil and Construction Engineering, Oregon State University, 101 Kearney Hall, Corvallis, OR 97331, United States; School of Science, Xi’an University of Architecture and Technology, Xi’an, 710055, China
Recommended Citation:
He S.,Wang X.,Fan H.,et al. The study on loess liquefaction in China: a systematic review[J]. Natural Hazards,2020-01-01,103(2)