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首页> 外文会议>Pan-American conference on unsaturated soils >A Coupled Geotechnical-Hydrological Model for Computing Bearing Capacity and Settlement of Shallow Foundation
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A Coupled Geotechnical-Hydrological Model for Computing Bearing Capacity and Settlement of Shallow Foundation

机译：浅层基础承载力与沉降计算的岩土水文耦合模型

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摘要

The loads from the civil engineering systems are ultimately transferred to the subsurface soil through various foundations and their load carrying capacity is greatly influenced by the degree of saturation (dos) of subsurface soil and matric suction within the influence zone. The dos of the subsurface soil and matric suction vary with climatic and hydrologic parameters such as rainfall, water table location, and temperature. In this study, a framework is proposed to evaluate the ultimate bearing capacity and elastic settlement of shallow foundation incorporating the site specific hydrological parameters such as historical rainfall and water table records. The results show that the ultimate bearing capacity obtained using the proposed coupled geotechnical-hydrological method is approximately 30% greater than that computed using the conventional method which assumes that the subsurface soil is fully saturated. Furthermore, the elastic settlement computed from the proposed method is approximately 60% smaller than that of conventional method. From this and the parametric studies, an increase in ultimate bearing capacity and a decrease in elastic settlement were observed for the site considered. It is also observed that the benefits are significant when the size of the footing increases.
机译：土木工程系统的载荷最终通过各种基础传递到地下土壤，其承载能力受地下土壤的饱和度（dos）和影响区域内的基质吸力的很大影响。地下土壤和基质吸力的剂量随气候和水文参数而变化，例如降雨，地下水位和温度。在这项研究中，提出了一个框架来评估浅层基础的极限承载力和弹性沉降，并结合现场特定的水文参数，例如历史降雨和地下水位记录。结果表明，所提出的岩土水文耦合方法所获得的极限承载力比假定地下土壤已完全饱和的传统方法所计算的极限承载力大约大30％。此外，由所提出的方法计算出的弹性沉降比传统方法小大约60％。从该研究和参数研究中，观察到的位置观察到极限承载力增加，而弹性沉降减少。还可以观察到，当立足点增加时，收益是显着的。

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