Читать книгу Earthquake Engineering for Concrete Dams - Anil K. Chopra - Страница 23

The primary goals of the book are: (i) develop dynamic analysis procedures to determine the response of concrete dams to ground shaking; (ii) identify factors that must be included in the response analyses; (iii) describe procedures for selecting ground motions for dynamic analyses; and (iv) illustrate application of these procedures to the seismic design of new dams and safety evaluation of existing dams. Ground shaking is the only earthquake hazard that is considered; excluded are hazards such as fault rupture under the dam or its abutments, and landslides around the reservoir that may cause overtopping of the dam.

The book is organized into three parts: I. Gravity Dams: Chapters 2–7; II. Arch Dams: Chapters 8–11; and III. Design and Safety Evaluation: Chapters 12–14. Part I and Part II are developed to address the first two of the above‐stated goals for gravity dams and arch dams, respectively. The various topics covered in Chapters 2–11 were mentioned in the preceding sections.

Part III includes three chapters. In Chapter 12, two levels of design earthquakes are defined and the performance requirements for the dam during each earthquake stated, among other topics. Chapter 13 is concerned with construction of the target design spectrum as well as selection of an ensemble of three‐components of ground motions consistent with this spectrum. The book closes with Chapter 14 where application of modern dynamic analysis procedures to four projects are summarized.