Double-layer Flat Net Shell Static And Dynamic Performance Analysis

Double reticulated domes are typical space structures with many advantages such as aesthetics, convenient installation, definitely transferring forces, covering large space, favorable unitary rigidity and so on, so this kind of space structure has wide development foregrounds. But at present, the static performances of the double reticulated domes applied on the different load combination of wind load, snow load, live load, seismic load and dead load are not adequately studied. Also the study on the dynamical response under seismic action is not sufficient. In this thesis, the internal force and transfiguration of the double reticulated dome under different load combination are studied; the linear and nonlinear analysis are separately performed; compare the difference between space girder element and space truss element; at last analyze the dynamical response under seismic action. The horizontal seismic response of double layer oblate lattice shell is analyzed by using step-by-step integration procedure. The effect of some parameters such as exterior load, different support conditions and damping ratio on the dynamic internal forces and dynamic properties is studied. Some valuable conclusions are obtained, which can provide a reference to civil engineering.