论文部分内容阅读
某工程采用无砂垫层真空预压法,抽真空90d后,加固效果良好,软基中土体物理力学指标均有大幅改善,土体的强度也有所增长,静荷载试验和十字板剪切强度检测结果表明:加固效果明显,达到工程设计要求的表层承载力标准值(50kPa)。结合不同行业规范地基承载力的多种评价依据,归纳总结出适合吹填土的根据含水率判定地基承载力大小的判定标准,即:对吹填土表层0~1.5m,按含水率57.8%对应地基承载力特征值fak≥50kPa进行判定;对0~原滩面按含水率62.5%对应地基承载力特征值fak≥40kPa进行判定。
Some projects use sand-less vacuum preloading method. After 90 days of vacuuming, the reinforcement effect is good. The physical and mechanical indexes of soils in soft foundation have been greatly improved, and the strength of soil body also increased. Static load test and cross-cut The strength test results show that the reinforcement effect is obvious, and the standard value of surface bearing capacity (50kPa) required by engineering design is reached. Combined with various evaluation criteria for bearing capacity of foundation in different industries, the criterion for determining the bearing capacity of foundation is concluded, which is suitable for filling dredged soil: 0 ~ 1.5m for surface layer of dredger fill, 57.8% Corresponding to the foundation bearing capacity eigenvalues fak≥50kPa; the 0 ~ original surface of the beach according to the moisture content of 62.5% corresponding to the foundation bearing capacity eigenvalues fak≥40kPa to determine.