A cone penetration test with pore water pressure measurement, or CPTU, is a static penetration test with water pressure measurement. The main purpose of CPT (CPTU) testing is to identify subsurface conditions: classify soil, detect layers and measure strength, determine deformation characteristics and the permeability of foundation soils.

The Pagani TG63-150 is the most popular CPTu machine in the world having sold over 1000 machines in 86 different countries. Developed over the last 30 years, Pagani Geotechnical have pioneered small relatively lightweight (1100kg) tracked CPTu rigs that provide an unmatched pushing testing force of 16tons due to their unique mast with ...

软弱地基的压缩模量将直接影响到地基沉降的预测精度。作为一种新型原位测试技术,孔压静力触探(CPTU)可 以提供3个 测试参数(锥 尖阻力qt、侧壁摩阻力fs�. 孔隙水压力u2),具 有快速、�. 算公式�. (m);qi压缩模量进行了大量研究,得 到了许多经验关系式。为第研究表明[2~7],土的压缩模量与锥尖阻力具有较好的线性相关关系,经 验公�. 地基假设,视 整个地基土为同一土类,反演出经验系数α。 然而,天 然地基并非是单层的,一 般呈多层状,不同土层的CPTU . 试锥尖阻力的范围差别较 …

本文首先介绍了目前国内外无线静力触探技术的研究现状，从设备、原理、特点、应用等方面分析对比了存储式、波导式 (声波、光波、无线电波)及特制探杆式三类无线静力触探技术，并对国内外无线静力触探的发展提出了展望。 研发了一种基于特制探杆、探头电源自供、无线电波传输的多功能数字式无线 CPTU 测试技术———NCT-1 型无线静力触探系统。 现场工程测试数据表明该系统技术性能稳定，测试数据可靠，操作便利快捷，可实时显示且便于加装探杆以实现深度勘测， …

孔压静力触探（CPTU）能实测锥尖阻力qc，侧 壁摩阻力f s 和孔隙水压力u等参数，能非常直观地反 映土类的变化，因此土分类一直是CPTU的主要工程

摘要：孔压静力触探〔CPTU〕原位测试技术不仅能测得锥尖阻力和侧 壁摩阻力，还可测得地下水位以下各土层的孔隙水压力及超孔隙水压力消散过程，在区分砂 层和黏性土层时，分辨率极高。 另外，CPTU 测试对土体扰动很小，其测试数据能最大程度 反映土体的真实性状。 因此，CPTU 原位测试技术在我国具有广阔的应用和开展空间。 报,2004,26 (4):553～556. Liu Songyu. On the strategy and development of CPT in China. Chinese Journal of Geotechnical EngiBiblioteka …

The piezocone penetration test (CPTu) is a in situ testing method used to determine the geotechnical engineering properties of soils and assessing subsurface stratigraphy, relative density, strength and equilibrium groundwater pressures.

In the Cone Penetration Test (CPT), a cone on the end of a series of rods is pushed into the ground at a constant rate and continuous measurements are made of the resistance to penetration of the cone and of a surface sleeve. Figure 2 illustrates the main terminology regarding cone penetrometers.

2021年2月7日 · A cone penetration test system that is equipped with a pore water pressure sensor is called a CPTu. In fact, without any need for sampling and only using these three parameters of q c , f s and u, the soil type and subsurface layering can be …

本文研制了一套自主研发的3000 米级多参数CPTu原位综合测试系统，成功解决了深海CPTu探测技术、水力精细控制穿透技术、同轴电缆和光缆等方面存在的技术难题。