Abstract
Load test is the main method to identify the bearing capacity of foundation in practical engineering. However, some problems are existing in the experiment, such as the scale effect, high cost and long construction period. The newly numerical ultimate analysis can overcome the shortcomings of time-consuming, complicated operation, inaccuracy and so on, which is gradually becoming an effective calculation method in geo-technical engineering. The paper adopts increment loading method and ultimate strain method to simulated the load test numerically. The calculation examples in the paper show that the results of load test can be obtained through numerical ultimate analysis, where the ultimate strain method is better.
Highlights
The identification of bearing capacity of foundation is an classical topic of soil mechanics [1], which is directly related to the safety and cost of buildings
Numerical ultimate analysis can simulate the whole process of the load test effectively and the pressuresettlement curves match well
Small discrepancy exists in the ultimate load, the reason is the different criteria to identify the ultimate load
Summary
The identification of bearing capacity of foundation is an classical topic of soil mechanics [1], which is directly related to the safety and cost of buildings It is emphasized by the construction units, structural engineers and construction enterprises and studied by many researchers. In practical engineering, loading experiment is often considered as the most authoritative solution when the data of bearing capacity of foundation is not available or reliable. It is the worldwide major method in identifying the bearing capacity of foundation and is widely used in the effect inspection of foundation treatment. The paper simulates numerically the load test through increment loading method and ultimate strain method
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