Lesson Objectives. CEE 3100 Structural Mechanics Fall 2011

Transcription

1 Lesson Objectives CEE 3100 Structural Mechanics Fall /07/11 Lesson 1: Introduction; What is structural engineering? Reading: 1-1,1-2 Define structural mechanics Explain the difference between design and analysis 09/08/11 Lesson 2: Dead loads; Tributary area & load paths Reading: 1-3 Define dead loads Define and calculate tributary area Determine the load path for a concentrated gravity load Explain what the numbers mean for a W Section (e.g., W16x57) 09/09/11 Lesson 3: Live loads Define live loads Define influence area Explain the engineering rationale for live load reduction Calculate live load for a structural member 09/12/11 Lesson 4: Roof live loads Explain the difference between live roof loads and live loads Calculate live roof loads on a structural member 09/14/11 Lesson 5: Snow loads Calculate the snow load on a roof Explain the factors that affect snow load and the effect they have on the load magnitude Determine the terrain category for a building Classify the roof exposure of a building as fully exposed, partially exposed, or sheltered Give an example of when snow drifts might be a problem and explain what the snow drift loads would look like 09/15/11 Lesson 6: Calculating wind load pressure Calculate wind pressure on a building Explain roof uplift Describe the areas of a building where the wind loads will be highest Explain the factors that affect wind load and the effect they have on the load magnitude 09/16/11 Lesson 7: Wind loads on members Determine the wind loading on a roof joist based on uplift Determine the wind loading on a column based on uplift Determine the wind loading on the lateral resistance for a building (shear wall, cross-braced bays, or moment frame) 1

2 09/19/11 Lesson 8: Load combinations Reading: 1-4 Calculate load combinations Explain why load factor values are different for the various load types Determine the factored moment, M u, for a beam 09/21/11 Lesson 9: Introduction to column design Explain resistance factors Calculate the nominal capacity (P n ) for a column Define limit state List and describe the limit states for a column Determine the theoretical controlling limit state for a column Complete a simplified design of a column for a given load Explain the advantages and disadvantages of steel tubes (HSS) compared to wide-flange sections when used as a column List and explain the imperfections accounted for in the AISC column equations 09/22/11 Case study: Quebec Bridge Failure 09/23/11 Lesson 10: Introduction to beam design Explain how a beam fails through a plastic-hinge mechanism Calculate the nominal bending capacity (M n ) for a beam for the plastic hinge limit state 09/26/11 Lesson 11: Beam design lateral torsional buckling and shear Explain how a beam fails by lateral torsional buckling Use a design chart to determine the most efficient section for a beam subject to lateral torsional buckling Determine the nominal shear capacity (V n ) for a beam Explain the concept of serviceability Explain why structural engineers need to check deflection serviceability List and describe limit states for a beam Complete a simplified design of a beam for given loads 09/28/11 Lesson 12: Superposition and symmetry Reading: 2-2, 10 9 Define superposition Explain how superposition can be used to simplify a structural analysis Determine if a structure is symmetric Use symmetry to simplify the analysis of a structure 09/29/11 Exam #1 - Lessons /30/11 Lesson 13: Frame structures shear and moment equations and diagrams Reading: 4-4 Draw shear and moment diagrams for frame structures 10/03/11 Lesson 14: Sketching the deflected shape Reading: 8-1 Sketch the deflected shape of a structure that is consistent with: Moment diagrams Reactions 2

3 Member connections and splices 10/05/11 Lesson 15: Introduction to Influence lines Reading: 6-1,6-2 Define influence line Explain the difference between an influence line and shear/moment diagrams Find the influence line (with magnitude) for a beam 10/06/11 Exam #2 - Lessons /07/11 Lesson 16: Muller-Breslau principle Reading: 6-3 Find the influence line for a structure using the Muller-Breslau principle Use an influence line to find a force effect from a constant distributed load 10/10/11 Lesson 17: Influence lines for trusses Reading: 6-5 Find the influence line for a truss Use a truss influence line to find a force effect due to a live truck loading Explain what the engineering concept of fatigue is Explain why influence lines are useful for determining if fatigue could be a factor for a truss member 10/12/11 Lesson 18: Introduction to tension member design Calculate the nominal capacity (P n ) for a tension member List and explain the limit states for a tension member Explain the difference between a yielding failure and rupture (fracture) Explain what shear lag is 10/13/11 Lesson 19: Introduction to energy methods Reading: 9-1 Explain the engineering principle behind energy methods Use an energy formulation to analyze a structure 10/14/11 Lesson 20: Virtual work truss deflections under static load Reading: 9-4 Define dummy load Find the deflection of a truss under static loading using virtual work 10/17/11 Lesson 21: Virtual work truss deflection under thermal load Find the deflection of a truss under thermal loading using virtual work 10/19/11 Lesson 22: Virtual work trusses with fabrication error and settlement Find the deflection of a truss subject to fabrication error and/or settlement using virtual work 10/20/11 Lesson 23: Virtual work beams Reading: 9-5 Find deflections and rotations of a beam using virtual work 10/21/11 Fall Break 3

4 10/24/11 Lesson 24: Virtual work using an integration table Use an integration table to find beam deflection with virtual work 10/26/11 Lesson 25: Virtual work of frames Determine deflections of a frame using virtual work 10/27/11 Exam #3 - Lessons /28/11 Lesson 26: Force method first degree indeterminate Reading: 10-1,2,4 Use the force method to analyze a first-degree indeterminate structure 10/31/11 Lesson 27: Force method multiple degrees of indeterminacy Use the force method to analyze a second-degree or higher indeterminate structure 11/02/11 Lesson 28: Force method settlement Find reactions of an indeterminate structure accounting for settlement Qualitatively determine if a reaction will increase or decrease due to settlement at the same or different reaction 11/03/11 Lesson 29: Approximate analysis of beams Explain why it is important to know how to perform approximate analysis Use approximate methods to analyze a beam 11/04/11 Lesson 30: Approximate analysis of determinate trusses Use approximate methods to calculate determinate truss forces and deflections 11/07/11 Lesson 31: Approximate analysis of indeterminate trusses Reading: 7-2 Use approximate methods to calculate indeterminate truss forces Explain the difference between externally and internally determinate trusses 11/09/11 Lesson 32: Introduction to displacement methods Reading: 11-1 Explain differences between force (flexibility) and displacement (stiffness) methods Find the reactions of an indeterminate structure using the stiffness matrix 11/10/11 Exam #4 - Lessons /11/11 Lesson 33: The slope-deflection method Reading: 11-2, 11-3 Use slope-deflection to analyze an indeterminate structure 11/14/11 Lesson 34: Slope-deflection: non-sway frames Reading: 11-4 Use slope-deflection to analyze an indeterminate non-sway frame 11/16/11 Lesson 35: Slope-deflection: sway frames Reading: 11-5 Use slope-deflection to analyze an indeterminate sway frame 4

5 11/17/11 Exam #5 - Lessons /18/11 Lesson 36: Stiffness coefficient, distribution factor, and carryover Define and calculate the stiffness coefficient, distribution factor, and carryover for an indeterminate beam 11/21/11 Lesson 37: Introduction to moment distribution Reading: 12-1 Use moment distribution to analyze simple indeterminate beams 11/23/11 Lesson 38: Moment distribution for beams Reading: 12-2 Use moment distribution to analyze more complex indeterminate beams 11/24/11 Thanksgiving Recess 11/25/11 Thanksgiving Recess 11/28/11 Lesson 39: Modified stiffness, cantilevers and settlement Reading: 12-3 Use modified stiffness coefficients to more easily analyze structure with moment distribution Analyze structures with cantilevers and support settlement using moment distribution 11/30/11 Lesson 40: Moment distribution frames Reading: 12-4 Use moment distribution to analyze a frame 12/01/11 Exam #6 - Lessons /02/11 Lesson 41: Approximate analysis of frames under gravity load Perform an approximate analysis of a frame subject to gravity loads Continued on 12/05/11 12/07/11 Lesson 42: Portal method Reading: 7-4,7-5 Perform an approximate analysis of a structure subject to lateral loads using the portal method Continued on 12/08/11 12/09/11 Lesson 43: Case Study: The Northridge Earthquake Explain why the damage from the Northridge Earthquake was of such concern to structural engineers Explain why the damage occurred and how it could have been avoided 12/12/11 Lesson 44: Sustainability in Structural Engineering and LEED Define sustainability Explain how LEED assesses the sustainability of a building Compare and contrast LEED to other sustainability rating systems 12/14/11 Lesson 45: Sustainability: concrete and masonry 5

6 Explain the advantages and disadvantages of concrete and masonry in terms of sustainability Explain how structural engineers can improve the sustainability of concrete and masonry 12/15/11 Exam #7 - Lessons /16/11 Lesson 46: Sustainability: steel and wood Explain what steel is and how its makeup affects sustainability Explain the difference between a Basic Oxygen Furnace and an Electric Arc Furnace and how they impact sustainability of steel Explain the advantages and disadvantages of steel and wood in terms of sustainability Explain how structural engineers can improve the sustainability of steel and wood Items in bold are fundamental learning objectives you will be expected to know them for the final exam. Dates are tentative. 6