摘要
圆锥动力触探试验(DPT)是岩土工程勘察中常规的原位测试方法之一,在国内外应用非常广泛。它是利用一定质量的落锤,以一定高度的自由落距将标准规格的圆锥形探头击入土层中,根据锤击数、贯入深度等判别土层的变化,评价土的工程性质。结合夹江地区某机场工程,总结了超重型圆锥动力触探与该地区卵石土性参数的规律,浅谈其在卵石地基勘察中的应用,利用超重型圆锥动力触探数据划分了场地的工程地层并得到了卵石层的地基承载力及相关力学参数,证实了超重型圆锥动力触探在卵石地基勘察中推广的适宜性,为卵石地区的工程勘察提供了借鉴意义。
The dynamic cone penetration test(DCPT)is one of the conventional in-situ test methods in the geotechnical engineering investigations.It is widely used both domestic and abroad.It uses a weight falling from a certain height to penetrate the standard sized cone tip into soils with a predefined depth.The blow counts that are required to reach the cone penetration depth are then recorded and used to characterize the engineering properties of subsurface soils.This paper summarizes the application of a heavy dynamic cone penetration in the investigation of cobble soils for the Jiajiang Airport project.The cobble soil stratigraphy and bearing resistance parameters were obtained from the DCPT.The results indicate that the DCPT method could be used in the exploration of cobble soils.
作者
许凯蒂
江巍
聂礼齐
李玉
XU Kaidi;JIANG Wei;NIE Liqi;LI Yu(Air Force Engineering Design&Research Institute,Beijing 100068)
出处
《土工基础》
2020年第6期660-662,共3页
Soil Engineering and Foundation
关键词
超重型动力触探
卵石地基
机场工程
Heavy Dynamic Cone Penetration
Cobble Soils
Airport Engineering
