Effects of a Group of High-Rise Structures on Ground Motions under Seismic Excitation

Figure 21

Peak ground acceleration distribution of URBAN4-4 with respect to nondimensional spatial coordinates (1/4 FE model, , El Centro, . The structure location is , , , and . The urban nondimensional width is 4.0; the nondimensional effective width of the structural group parallel to the excitation is 7.0; the nondimensional effective width of the structural group perpendicular to the excitation is 5.0).