253 Final Design

The final design is to produce a set of constructible, biddable, and cost-effective construction documents. The design process involves structural analysis, member and detailing design, and preparation of a set of construction documents including plans, drawings, and special provisions. Structural analysis shall consider the appropriate material properties, member joints, and boundary conditions. The members and joints shall be proportioned to carry various possible loads (dead loads, live loads, wind loads, earthquake loads, etc.) in accordance with the requirements of design standards and codes, such as AASHTO (2004) for highway bridges and AREMA (2003) for railway bridges in the United States or JRA (2002) in Japan, or project-specific design criteria. For major bridges, project-specific design criteria are usually needed and shall be developed (Caltrans 2002). A well-prepared construction document shall be biddable and constructable and cost-effective.

Mov.

980,000

980,000

Mov.

Mov.

1,000,000

1,000,000

1,000,000

FIGURE 25.11 Design comparison of Minato Oh-Hashi, Japan: (a) K-truss bridge (this was selected); (b) cable-stayed bridge; (c) arch bridge; and (d) suspension bridge (HEPC 1975).
0 0

Post a comment