Site Investigation | Deep Soil Bearing Capacity Assessment to Ensure Proximity Construction of Urban DC Buildings
Ground investigation
To protect the proximity construction of urban-type data centers, deep drilling and viscous soil consolidation analysis are used to prevent deformation and settlement risks in the surrounding ground.
When constructing or expanding data centers in urban areas or densely built environments, it is extremely important to implement proximity construction measures that minimize the impact of super high loads due to self-weight on the surrounding ground and adjacent structures. Geotech's specialized ground investigation service precisely visualizes the depth of supporting layers and the composition of strata through deep borehole surveys and standard penetration tests, supporting the selection of construction methods that prevent ground loosening and vibration damage during construction. Furthermore, by conducting indoor loading consolidation tests using undisturbed samples from alluvial clay layers, we calculate the consolidation yield stress and compression index to simulate the propagation behavior of underground stress, thereby preemptively blocking residual settlement effects on neighboring properties and roads. In addition, by combining measured lateral deformation coefficients from in-situ lateral loading tests (LLT) with surrounding data from our proprietary database "GEODAS," we derive safe foundation structures that minimize neighboring impacts. With reliable ground data that prevents neighbor disputes and fulfills accountability to third-party organizations, we strongly support the smooth construction of urban-type data centers.
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basic information
We will conduct deep excavation using a boring machine that complies with urban delivery restrictions, as well as standard penetration tests (continuous N-value measurement) in accordance with JIS standards. For cohesive soil layers, we will perform undisturbed sample collection (using triple tubes, etc.) and precisely calculate the consolidation yield stress Pc and compression index Cc through JIS A 1217 staged loading consolidation tests. Additionally, we will directly measure the lateral deformation modulus E value of the ground in situ using in-hole lateral loading tests (LLT). All measurement data will be analyzed in conjunction with our in-house ground information system GEODAS and delivered as a technical report specialized for proximity construction.
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Applications/Examples of results
It is optimal for assessing proximity construction risks for data center construction in urban areas, adjacent to industrial parks, and at existing facility expansion sites. It will be used for preliminary checks of risks such as neighboring subsidence and road collapse due to high load, prevention of vibration noise and ground loosening during pile driving, and foundation design in areas close to retaining walls and soil supports. Additionally, it can be widely utilized by developers and construction companies to present quantitative evidence in explanations to neighboring residents and discussions with relevant agencies, as well as to respond to confirmation reviews and structural assessments.
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