Design of Steel Structures (2) Design of Steel Beams

Slides:

Advertisements

Similar presentations

T1. DESIGN OF STEEL BEAMS Steel framed building

Advertisements

Design of Steel Flexural Members

Limit States Flexure Shear Deflection Fatigue Supports Elastic Plastic

Beams Stephen Krone, DSc, PE University of Toledo.

ENCE 710 Design of Steel Structures

2.2 STRUCTURAL ELEMENT BEAM

Lecture 9 - Flexure June 20, 2003 CVEN 444.

Elastic Stresses in Unshored Composite Section

Advanced Flexure Design COMPOSITE BEAM THEORY SLIDES

Umm Al-Qura University Department of Civil & Structural Engineering

T6. DESIGN OF REINFORCED CONCRETE BEAM Reinforced concrete framed building T6. Design of reinforced concrete beam page 1. Alaprajz Floor plan Beam: linear.

4-Chapter Allowable stresses. contents Introduction 2.6.1(p8) Compression element, Axial or bending2.6.1(p8) Compression element, Axial or bending Axial.

Reinforced Concrete Flexural Members

Design of Concrete Structure I

Sample Problem 4.2 SOLUTION:

LRFD-Steel Design Dr. Ali Tayeh Second Semester

Section 3 design of post-tensioned components for flexure Developed by the pTI EDC-130 Education Committee lead author: trey Hamilton, University of.

ENCE 455 Design of Steel Structures

COMPOSITE BEAMS-II ©Teaching Resource in Design of Steel Structures –

Torsion in Girders A2 A3 M u = w u l n 2 /24 M u = w u l n 2 /10M u = w u l n 2 /11 B2 B3 The beams framing into girder A2-A3 transfer a moment of w u.

CM 197 Mechanics of Materials Chap 14: Stresses in Beams

Sample Problem 4.2 SOLUTION:

10 Pure Bending.

Beams. BEAMS A structural member loaded in the transverse direction to the longitudinal axis. Internal Forces: Bending Moments and Shear.

Composite Beams and Columns

By: Prof Dr. Akhtar Naeem Khan

Dr. Ali I. Tayeh First Semester

Chapter 4 - Flexure. Lecture Goals Structures Basic Concepts Rectangular Beams.

BEAMS AND COLUMNS PRESENTED BY K.ROSHIN RUKSHANA.

© Dr S R Satish Kumar, IIT Madras1 SECTION 7 DESIGN OF COMPRESSION MEMBERS.

CTC 422 Design of Steel Structures

N.W.F.P. University of Engineering and Technology Peshawar 1 By: Prof Dr. Akhtar Naeem Khan Lecture 12: Composite Beams.

LRFD- Steel Design Dr. Ali I. Tayeh second Semester Dr. Ali I. Tayeh second Semester.

Chapter 4 Pure Bending Ch 2 – Axial Loading Ch 3 – Torsion

Structural Curriculum for Construction Management and Architecture Students 1 Prepared by: Ajay Shanker, Ph.D., P.E. Associate Professor Rinker School.

6- Calculation of shear stress at composite interface: A)Under service load: Strain and stress distributions across composite beam cross- section, under.

Composite Construction

Chapter 4 Pure Bending Ch 2 – Axial Loading Ch 3 – Torsion Ch 4 – Bending -- for the designing of beams and girders.

Beam Design Beams are designed to safely support the design loads.

UNIT - IV PLASTIC ANALYSIS OF STRUCTURES

Design of Gantry Girders

PLASTIC ANALYSIS OF BEAMS - SANDEEP DIGAVALLI. AT A GLANCE OF THIS TOPIC  BASIS OF PLASTIC THEORY  STRESS-STRAIN CURVE OF PLASTIC MATERIALS  STRESSES.

SECTION 7 DESIGN OF COMPRESSION MEMBERS

Structural Considerations for Bridges

Analysis and Design of Beams for Bending

Sample Problem 4.2 SOLUTION:

Design of Beams for Flexure

Design of Gantry Girders

Example 6.04 SOLUTION: Determine the shear force per unit length along each edge of the upper plank. For the upper plank, Based on the spacing between.

Design of Steel Beams Dr. Bashar Behnam.

contents Design of beams (week 11,12,13), (10,17,24 Nov.)

Lecture - Design of Columns

SECTION 7 DESIGN OF COMPRESSION MEMBERS

Chapter-2 Parts of Steel Bridges.

Structure II Course Code: ARCH 209 Dr. Aeid A. Abdulrazeg

CHAPTER 1: INTRODUCTION part C

Chapter 3 BENDING MEMBERS.

DESIGN OF TRUSS ROOF Chapter 7

4 Pure Bending.

Structure I Course Code: ARCH 208 Dr. Aeid A. Abdulrazeg

Theory of Simple Bending

Sample Problem 4.2 SOLUTION:

Example 6.04 SOLUTION: Determine the shear force per unit length along each edge of the upper plank. For the upper plank, Based on the spacing between.

Analysis and Design of Beams for Bending

Introduction to Beams A beam is a horizontal structural member used to support loads Beams are used to support the roof and floors in buildings.

Design of Steel Beams Dr. Bashar Behnam.

4 Pure Bending.

Bending Deformation of a Straight Member

Presentation transcript:

Design of Steel Structures (2) Design of Steel Beams Prof. D. Ahmed Mohamed Anwar Lecture 1

Common Beam Cross Sections S.I.P or I.P.E Channel B.F.I. Built up sections Built up sections

Performance and Behavior of Steel Beams: The behavior of a beam under Concentrated Load at mid-span illustrated by the following example. The max. moment, outer - fiber strain and stresses occur at mid-span Successive Stages in bending are shown in This figure . (I) Elastic Range [Stage (1) and Stage (2)] (II) Plastic Range [Stage (3) and Stage (4)] P 3 2 4 1 (a) 3 2 4 1 (b) My Mp Fy (c) Y ε1<εy ƒ1<Fy Ε1=εy ƒ1=Fy Fy - - (d) X X M=My Fy + + (e) Stage 1 Stage 2 Y (I) Elastic Range

- - - - + Variation in Strain and Stress Along The Depth of the Beam 2 Strength in Elastic Range = My = Fy *Sx , Zx = elastic Section Modulus Strength in Plastic Range = My = Fy *Sp , Zp = Plastic Section Modulus , and, ζ =(Mp/My) = (Zx/Zp) = 1.1 – 1.18 For I- Sections and = 1.5 for Rectangular Section M=My M=Mp Y ε1<εy ƒ1<Fy ε1=εy ƒ1=Fy ε1>εy ƒ1=Fy ε1>>εy ƒ1=Fy - - - - X + + + + Stage 1 Stage 2 Stage 3 Stage 4 Y (I) Elastic Range (II) Plastic Range Variation in Strain and Stress Along The Depth of the Beam Stress (σ) Elastic Range Plastic Range Strain Hardening Idealized Stress – Strain Diagram 2 3 4 Fy 1 ƒ1 Strain (ε) ε1 ε4 ε2 ε3 εy

Fully Laterally Supported Beams (Floor or Roof Beams) Flexural Members have the Compression Flange Restrained to Satisfy Lateral Support . This is True in Beams Supporting floors and Roofs, where the beam is in direct contact or has the top Flange embedded in the floor or Roof Slabs as the Following: LUact =0.0 R. C. Slab Shear Connector Steel Section imbedded in Concrete Section Top Flange embedded in Concrete Slab Top Flange Connected with R. C. Slab by Shear Connectors Composite Slab Box Girder R. C. Slab Beam is Laterally Supported by Composite Slab

Laterally Unsupported Beams Torsion will be combined with Bending when the Line of action of Load is not passing through the Shear Center of the cross section P S U M M (I) A B C D P V X S Y (II) L1 L2 L3 Φ A B D C Section S-S Main Beam “A-D” provided by Lateral Supported by Lateral Beams at B & C “Buckling of Beams Provided with Lateral Secondary Beams” LU act =Greater (L1, L2 & L3)