张家港盛泰码头吹填粉细砂地基处理试验研究

某工程采用高真空击密法加固地基，为找到经济合理的施工参数，分别在散货堆场（A区）和件杂堆场（B区） 设一个试验区。试验区检测结果表明，A区容许地基承载力达到225 kPa以上，0~8 m内砂层平均标贯击数约20.6击，平均端 阻Ps值约7.48 MPa；B区容许地基承载力达到196 kPa以上，0~7 m内砂层平均标贯击数约17.0击，平均端阻Ps值约6.21 MPa。 本工程是一个典型的长江中下游地区吹填长江粉细砂形成陆域的地基处理案例，对长江中下游类似工程具有参考价值。

Ground improvement test on Zhangjiagang Shengtai port reclamation area

High vacuum densification method (HVDM) is recommended for ground improvement. To obtain the most economic and reasonable construction parameters, two test-areas, zone A and zone B, are performed in steel stock yard and goods yard respectively. Post testing results indicate that, in zone A, the allowable bearing capacity reaches at least 225 kPa, average SPT value of sand layer in 0~8m reaches 20.6 blows and average CPT Ps value of sand layer reaches 7.48 MPa. In zone B, the allowable bearing capacity reaches at least 196 kPa, average SPT value of sand layer in 0~7m reaches 17.0 blows and average CPT Ps value of sand layer reaches 6.21 MPa. This project, which is a typical ground improvement case for projects using Changjiang fine sand for reclamation, offers a valuable reference for similar projects.