Site Investigation | Optimize Pile Layout for New Buildings on Soft Ground! Detailed Ground Bearing Capacity Evaluation Survey
Boring survey
Clarifying settlement behavior in new building construction on soft, cohesive soil! Achieving a high level of both pile placement and structural safety through precise visualization of ground bearing capacity to prevent differential settlement.
This technical solution is a ground consulting service that eliminates the risk of uneven settlement, which is likely to occur in new building construction plans on soft, cohesive ground. It ensures the long-term safety of buildings through precise evaluation of ground bearing capacity and optimization of pile placement. In sites where alluvial clay and soft soil layers are deeply distributed, concerns arise about uneven slopes and structural cracks due to eccentric loads from superstructures and long-term consolidation settlement. Geotech combines standard penetration tests, laboratory soil tests, and multi-point ground bearing capacity measurements to accurately visualize the consolidation yield stress and deformation angles of cohesive soils through numerical simulations. By linking the obtained quantitative data with the axial and lateral forces under the columns of the superstructure, we establish an optimal pile placement design that focuses on areas with high settlement risk. This prevents excessive piling due to overly conservative safety factor estimates while providing reliable ground evidence that smoothly passes rigorous structural compatibility assessments and building confirmation reviews. We support the asset value and preservation of buildings throughout their lifecycle.
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basic information
In this survey, we will conduct N-value calculations using the Standard Penetration Test (SPT) and collect undisturbed samples, followed by laboratory geotechnical tests such as unconfined and triaxial compression tests and staged loading consolidation tests. We will accurately determine the consolidation yield stress, overconsolidation ratio, compression index, and shear strength of cohesive soils, and output the predicted settlement and deformation angle due to long-term axial loads from the superstructure. Furthermore, we will perform allowable vertical bearing capacity calculations in accordance with the Ministry of Land, Infrastructure, Transport and Tourism notifications and the design guidelines for building foundation structures, and determine the design N-value corresponding to certified pile methods such as end-bearing winged steel pipe piles.
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Applications/Examples of results
It is mainly used for different settlement measures and optimization of pile foundations for newly constructed buildings, medical and welfare facilities, and mid- to high-rise apartments in alluvial lowlands and former riverbed areas. It is ideal for design projects that aim to prevent building tilting due to long-term consolidation settlement in sites where high water content clay or soft clay is thickly deposited, or for scientifically determining the number and arrangement of piles to accommodate uneven loading of the superstructure. Additionally, it is widely used as supporting documentation for technical inquiries from third-party review organizations and as proof of compliance with structural review standards.
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