华北地区剪切波速与深度之间统计关系的通用模型特征研究  

Research on the Characteristics of Statistical Relationship between Shear Wave Velocity and Depth in North China

作　　者：闫振军 吕悦军[1] 黄雅虹[1] 方怡[1] Yan Zhenjun;Lii Yuegun;Huang Yahong;Fang Yi(Institute of Crustal Dynamics,China Earthquake Administration,Beijing 100085,China)

机构地区：[1]中国地震局地壳应力研究所

出　　处：《震灾防御技术》2019年第2期304-313,共10页Technology for Earthquake Disaster Prevention

基　　金：中央级公益性科研院所基本科研业务专项(ZDJ2017-28);国家自然科学基金(51708516)

摘　　要：剪切波速是区别土动力学和静力学的重要参数,其影响因素包括土层埋深、颗粒形状、颗粒比重、压缩模量、孔隙比、含水率和密度等,其中土层埋深对剪切波速的变化影响较大。本文搜集整理了华北地区10个城市的928个钻孔共10703个测点的剪切波速与土层埋深之间的经验统计关系,探讨华北地区剪切波速随深度变化的特征,并从岩性条件、沉积环境等方面分析其原因。通过对比分析,给出了华北地区黏性土和砂类土剪切波速随深度变化的最佳拟合经验统计关系,并进行实例验证,所得结果可为缺乏数据的区域提供一定参考。Shear wave velocity is an important parameter to distinguish soil dynamics and statics. The influencing factors include soil depth, particle shape, particle specific gravity, compressive modulus, void ratio, water content and density, etc. Among them, the soil depth has a great influence on the change of shear wave velocity. Many scholars have given statistical relationships between soil depth and the shear wave velocity of different lithological soils such as clay, silt, sandy soil and gavel soil in different regions of the country. This paper collects and compiles the empirical statistical relationship between the shear wave velocity and soil depth of 16741 points in 753 holes in 11 cities of North China. The statistical relationship is summarized and the characteristics of shear wave velocity variation in North China are discussed from aspects of lithological conditions, sedimentary environment and so on. Through comparison and analysis, the best fitting empirical relationship between the shear wave velocity and the depth of clay soil and sand soil in North China is given and verified. The obtained results can provide certain reference for the areas lacking data, which has certain engineering practical significance.

关 键 词：华北地区 剪切波速 统计关系 土层埋深 通用模型 

分 类 号：TU435[建筑科学—岩土工程]