Static analysis for tall building tube-in-tube structures with variable cross-section on semi-infinite elastic subgrade

摘要

In the paper a new semi-analytical method for three-dimensional analysis of interactions between semi-infinite elastic subgrade and foundation and superstructure of tall buildings is developed. Some satisfying conclusions are obtained by the static analysis for the tube-in-tube structure adopted by Guangdong Guomao Building. The various subgrade stiffness for evaluating elastic strain energy stored in subgrade was as well inferred by using the principle of energy equivalency.