CE470 Structural Steel Design

Transcription

1 CE470 Structural Steel Design Spring 2014 Judy Liu MWF 11:30 AM 12:20 PM RHPH 164 R 3:30 5:20 PM HAMP 3153

2 Syllabus My Office Hours Mondays, Wednesdays 1:00 2:20 PM Or by appointment Saahas Office Hours Wednesdays 3:30 4:30 PM Fridays 1:00 2:00 PM

3 Course Objectives This course covers design of structural steel elements, including tension members, compression members, flexural members, and structural connections with welds and bolts. You will be able to design these components using the AISC Specification for Structural Steel Buildings and to apply your knowledge to the design of a steel building.

4 Required Books L. F. Geschwindner Unified Design of Steel Structures 2 nd edition BOOKSTORE AISC Steel Construction Manual 14 th edition PURCHASE ONLINE with credit card (or mail form with check) Details in handout

5 Homework / Labs / Exams Late assignments will not be accepted unless arrangements have been made in advance with the instructor. The lowest homework grade will be dropped. A missed lab will result in zero credit unless arrangements have been made in advance with the instructor. The lowest lab grade will be dropped. There will be no make-up exams unless arrangements have been made with the instructor at least one week in advance.

6 Labs Bring: Except for this first week and next week your AISC manual, a straight edge, engineering paper, calculator, and writing instruments Be prepared to stay for the full duration.

7 Ethics Academic integrity is expected of all students at all times. Any incidents of academic dishonesty will, at the very least, result in zero credit for the associated assignment or exam. Further penalties, such as immediate failure of the course and/or referral to the Dean of Students, are at the discretion of the instructor. brochure.php

8 Emergencies In the event of a major campus emergency, course requirements, deadlines and grading percentages are subject to changes that may be necessitated by a revised semester calendar or other circumstances. Information about changes in this course can be obtained from the course website, my address: jliu@purdue.edu, and/or my office phone:

9 Emergency Assembly Areas

10 Emergency Assembly Areas Gather away from RHPH alongside JNSN

11 Course Website Check this site for lecture objectives, reading assignments, homework assignments, supplemental materials and announcements

12 Website (Homework)

13 Website (Reading, Lecture Objectives)

14 Lecture Plan

15 Lecture Plan

16 CE 470 Lectures 1 and 2 Introduction Types of buildings Gravity and lateral systems Design procedure Load and Resistance Factor Design Loads

17 Steel Structures Framed Structures Beams and columns Moment Frames, Braced Frames, Shear Walls + Gravity Frames, Space Frames Shell Structures Water tanks, pressure vessels Suspension Structures Cables in tension provide primary support Suspension bridges (Cable-stayed bridges)

18 John Hancock Tower Chicago Golden Gate Bridge San Francisco

19 JEWISH CONTEMPORARY MUSEUM SAN FRANCISCO Structural Engineers OLMM Consulting Engineers, Oakland, CA Arup, San Francisco (Consultant)

20 LAMAR CORPORATE HEADQUARTERS HUDSONVILLE, MI Structural Engineers Structural Design, Inc., Ann Arbor, MI Mehdi Setareh, VA Tech (Consultant) Images courtesy of Elisabeth Wong, SDI Structures

21 COWBOYS STADIUM DALLAS, TX Structural Engineers Walter P. Moore, Dallas Uni-Systems, LLC, Minneapolis (Consultant)

22 Types of Buildings RIGID PINNED Moment Frame Braced Frame Shear Wall Lateral load resisting systems shown here; Gravity load resisting systems typically have pinned connections only.

23 Photo Courtesy of Michael Engelhardt

24 Photo Courtesy of Michael Engelhardt

25 Types of Braced Frames Single Diagonal Inverted V- Bracing V- Bracing X- Bracing Two Story X- Bracing

26 WANG HALL PURDUE UNIVERSITY

27 CENTER FOR STUDENT EXCELLENCE AND LEADERSHIP (CSEL) PURDUE UNIV. Photos Courtesy of Miguel Betancourt, FRP

28 Photo Courtesy of C.M. Uang

29 Temporary Bracing Photo Courtesy of Tim Mrozowski

30 L.A. Live Hotel and Residences aspx?id=16012

31 Types of Buildings SHEAR WALL MOMENT FRAMES CORE BRACED FRAMES A couple of examples of lateral load resting frame configurations. Typical buildings might have moment frames or braced frames in both directions and only in a few bays.

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34 Design Team Traditional Design Team Owner Architect/ Engineers CM/contractors/ sub-contractors Design-Build O A E CM

35 Basic Goals of Design Team Safety life safety, structural integrity Function Serve purpose / goals of owner Economy Short & long-term costs Labor and materials Material cost 25% of total Cost of steel in $ / lb

36 Design Procedure 1. Planning 2. Preliminary Layout 3. Establish Loads 4. Preliminary Member Selection 5. Analysis 6. Evaluation 7. Redesign 8. Done! DEMANDS? FUNCTION(S) SPACING of BEAMS/COLUMNS WIND? EARTHQUAKE? GRAVITY? BASED ON EXPERIENCE / BASIC CALCULATIONS CHECK CAPACITY/ SERVICEABILITY?