Fig. 1

Side view of the S3-L20-Z1 STMF, showing plastic hinges at the ends of the special truss segments. Hinges in columns and truss members outside the special segments are also defined but not shown for clarity.

Side view of the S3-L20-Z1 STMF, showing plastic hinges at the ends of the special truss segments. Hinges in columns and truss members outside the special segments are also defined but not shown for clarity.