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以温州丁山垦区的吹填淤泥真空预压加固处理工程为例,基于现场试验和数值模拟,对无砂垫层真空预压法和传统的有砂垫层真空预压法从表面沉降、分层沉降、孔隙水压力、固结度、静力触探、十字板强度及部分土体物理力学参数等方面对加固效果进行了对比分析。结果表明,两者加固效果接近,无砂垫层真空预压法可用于代替传统的有砂垫层真空预压法。
Taking the project of vacuum preloading of dredged silt in Ding Shan reclamation area of Wenzhou as an example, based on the field test and numerical simulation, the vacuum preloading method with sand-free underlay and the vacuum preloading with sand underlayment were studied from the surface subsidence, Layer settlement, pore water pressure, degree of consolidation, static cone penetration, cross-sectional strength and some of the physical and mechanical parameters of soil reinforcement effect were contrastively analyzed. The results show that the two are close to each other, and the vacuum preloading without sand cushion can be used to replace the traditional vacuum preloading with sand bedding.