A Modified Pressure–Sinkage Model for Studying the Effect of a Hard Layer in Sandy Loam Soil

Applied Sciences

卷:11

Péter Kiss¹  György Pillinger¹  Nihal D. Salman²  Muammel M. Hanon² 

[1] Institute of Technology, Hungarian University of Agriculture and Life Sciences (MATE), 2100 Gödöllő, Hungary;

[2] Mechanical Engineering Doctoral School, Szent István Campus, MATE University, 2100 Gödöllő, Hungary;

关键词: pressure–sinkage relationship;    soil deformation;    bevameter;    sinkage modulus;    load-bearing capacity;   

DOI  :  10.3390/app11125499

来源: DOAJ

【 摘 要 】

The applicability of the typical pressure–sinkage models used to characterize the soil’s bearing properties is limited to homogeneous soils (infinite thickness) that have no hard layer. At a given depth, a hard layer can have a considerable impact on the soil’s load-bearing capacity. It is thus necessary to alter the pressure–sinkage equation by taking this condition into account when assessing the load-bearing capacity. The present paper aims to determine a simple, high-fidelity model, in terms of soil characterization, that can account for the hard layer affection. To assess hard layer affection in this paper, a plate sinkage test (bevameter) was conducted on sandy loam soil. To this end, the soil was prepared by considering three bulk densities and two soil thickness levels at 7–9% moisture content levels. According to the results, this paper put forth a new perspective and related equations for characterizing bearing performance. The sinkage modulus (k) is an intrinsic soil parameter that has a determined unit of N/cm² and is significant for managing the bearing performance. The results showed that the new modulus sinkage model incorporates the main factor of the rigid layer effect involving high fidelity that the conventional models have failed to account for.

【 授权许可】

Unknown