Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: AASHTO HB-17 DIVISION I-A SEC 4:2002
• Năm ban hành / Publication date: 2002
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Division I-A Seismic Design - Analysis Requirements
• Thay thế cho / Replace: AASHTO DIVISION I-A SEC 4:1996
• Số trang / Page: 4

Phạm vi áp dụng / Scope of standard

GENERAL: The requirements of this section shall control the
selection and method of seismic analysis of bridges. Four analysis
procedures are presented.

Procedure 1. Uniform Load Method

Procedure 2. Single-Mode Spectral Method

Procedure 3. Multimode Spectral Method

Procedure 4. Time History Method

In each method, all fixed column, pier, or abutment supports are
assumed to have the same ground motion at the same instant in time.
At movable supports, displacements determined from the analysis
prescribed in this chapter, which exceed the minimum seat width
requirements as specified in Article 6.3 or 7.3, shall be used in
design without reduction by the Response Modification Factor.