The lateral stiffness factor α is deduced and used to modify the effective length coefficient which calculates sway frame s second-order effect such as the P-Δ method,second-order elastic analysis method and double second-order effect method.

Through the analysis on the elements influencing the bearing capability such as settlement, mud thick and shape of hole wall the mechanics adopting post grouting technology to enhancing bearing capability of single pile are elaborated and the side resistance coefficient and end resistance coefficient are introduced.

Optimal analysis for lateral stiffness of shear wall in mid-highrise RC frame-shearwall structure with special-shaped columns;

Optimal lateral stiffness of tall building based on initiative control;

Analysis of lateral stiffness influence on the prestressing force of frame;

Based on a practical project, the influence of the lateral rigidity on effective prestressing force is introduced, which is analyzed by methods of classical structural mechanics and finite element program.