Characterization of soil behaviour for earthquake engineering applications

地震工程应用中的土壤行为表征

• 批准号: 250368-2012
• 负责人: Sivathayalan, Siva
• 金额: $ 1.75万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=547613
• 关键词: Characterization; soil; behaviour; earthquake; engineering

Fundamental understanding of soil behaviour has mainly been derived from laboratory tests under fully drained or fully undrained conditions, and along specific stress paths. In reality, in-situ stress paths would be dictated by variations in all three principal stresses, and deformation would invariably involve simultaneous changes in pore-volume and pore-pressure. While drained and undrained approximations might be applicable to specific situations depending on the permeability of the soil and the loading rate, there are several instances during which such approximations will not yield satisfactory results.

对土壤特性的基本认识主要来自完全排水或完全不排水条件下的实验室试验，以及沿着特定应力路径的试验。 实际上，原地应力路径将由所有三个主应力的变化决定，并且变形将总是涉及孔隙体积和孔隙压力的同时变化。虽然排水和不排水近似值可能适用于取决于土壤渗透性和加载速率的特定情况，但在某些情况下，这种近似值不会产生令人满意的结果。