静力触探技术在场地及地基地震效应评价中的应用

Application of static sounding in evaluating earthquake effect of field and foundation

文章试图利用静探技术定量评价场地和地基地震效应。通过对静探技术与波速试验的原理研究,得出两者成正相关关系,并选取8个工程共12组静探、波速试验孔,应用多种数理统计技术进行相关分析,分别建立粘性土及砂性土的等效剪切波速计算公式。并得到了工程验证,效果良好。

According to the criterion, the area, whose earthquake intensity is equal to or greater than degree 6, should be carried through engineering survey for earthquake effect of field and foundation to class field sort and advantageous or disadvantageous areas for earthquake. For Class IV building or Class III building of not beyond 10 floors and 30m high, it can estimate the shear wave velocity for each soil layer when field measured shear wave velocity is non available. The paper evaluates earthquake effect of field and foundation quantitatively by static sounding technique. Through the theoretic study of static sounding technique and wave velocity test, the positive correlation is gained. Taking 8 projects including 12 test bores as examples, equivalent shear wave velocity formulae for clay and sandy soil are set up using several statistics methods, which are validated by practice. Static sounding technique has been widely applied in engineering survey for its handiness, speediness and high efficiency. Using it to calculate field equivalent shear wave velocity and quantitatively evaluate earthquake effect of field and foundation is a simple, efficient and accurate method, which is worth applying and summarizing.