Misan University College of Engineering-Civil Engineering Department 3 rd Stage

2. Misan UniversityCollege of Engineering-Civil Engineering Department3rd Stage Theory of Structures Dr. Abdulkhaliq Abdulyimah Jaafer

3. Syllabus • Structures and their components. • Trusses. • Statically determinant beams and frames. • Influence lines. • Moving loads. • Approximate methods of analysis. • Deflections of beams. • The principle of superposition. • The three-moment equation. • Energy methods. • The slope deflection method. • The moment distribution method. • Stiffness matrix method

4. Text Book:  Structural Analysis, by R.C. Hibbleler , SEVENTH  Edition, Prentice Hall, Inc. 2009. References Structural Analysis by Nebbeel A. Jassim Structural Analysis by Jack C. MC Cormac Structural Analysis by Ronald L. Sack. Any Structural Analysis Book

5. Prerequisite: Mechanics of Materials Course Aims: This course aims to understanding basic principles and methods for Structural analysis and to practice problem solving in type of loads and structures, Analysis of statically determinate and indeterminate structures, Trusses, Internal loading (Axial force, Shear force and Bending Moment diagram), Cables, Arches, Influence line, and deflections.

6. Introduction A structurerefers to an assembly of members. The main purpose of a structure is to resist external loads while performing its intended function in an acceptable fashion and transmit these loads to the foundation. Important examples related to civil engineering include buildings, bridges, and towers …etc.

8. Structural Members (Elements) Structural members are the smallest units into which structure can be divided. Several types of structural member exist depending on how the forces are transferred throughout them. The primary types are illustrated below.

9. Beams Beams are bending elements, they carry loads primarily normal (transverse) to their longitudinal axis and transfer these loads from support to support by flexural bending of member material.

11. Columns Columns arecompression elementsthat carry forces primarily in direct compression of the member materials. Beam-Columns Beam-columns carry loads in combined axial load and bending.

12. Ties Ties are elements that carry load in axial tension, or stretching of the member material.

13. Cables Cables are tension members, but unlike ties, cable loads are usually applied at an angle to the cable axis. Cables are almost perfectly flexible members, and are characterized by a geometry that incorporates a definite sag, from which the cable derives its load-carrying ability.

14. Arches Arches are curved elementthat use their geometrical shape to carry loads (across horizontal span) primarily in compression. The distribution of internal forces in an arch depends upon: the loads applied, the support conditions, the shape of the arch, and the details of internal construction.

15. Plates and Shells A plate is a three dimensional element one of whose dimensions (thickness) is considerably less than other two. The plate is flat or plane element, while the shell is curved. In shell the basic resistance to loads is through tension and compression, however, plates resist transverse loads by two dimensional bending and shear.

16. Q&A

17. Thank You Very Much