Efficient progressive collapse analysis for robustness evaluation and enhancement of steel concrete composite buildings
Efficient progressive collapse analysis for robustness evaluation and enhancement of steel concrete composite buildings
... significance of this study lies in bridging this gap by means of a realistic yet efficient progressive collapse analysis method for robustness evaluation of buildings The contribution of this thesis ... 157 5.4.1 Strategy 1: Robustness enhancement of new buildings 157 5.4.2 Strategy 2: Robustness enhancement of existing buildings 159 5.5 Robustness enhancement of Cardington building ... development and verification of the proposed efficient progressive collapse analysis (ePCA) method In the second stage, the efficiency of ePCA is utilized to perform dynamic and static progressive collapse...
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Tài liệu Inspection, Evaluation and Repair of Steel Structures P2 ppt
... A588/A588M steel (a low-carbon weathering steel containing copper) and would corrode when coupled with A588/A588M steel There may also be a potential difference between rivet steel and the adjoining ... contact surfaces of the structure and seal, galvanic corrosion if the seal plate is of a dissimilar metal to that of the structure itself, or erosion corrosion if abrasive sand and silt particles ... stresses and/ or displacements between connected components Concentrated loads occur at support locations on all structures (i.e., trunnion assembly of gates and valves, end posts of lift gates, and...
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Tài liệu Inspection, Evaluation and Repair of Steel Structures P1 docx
... 2001 Engineering and Design INSPECTION, EVALUATION AND REPAIR OF HYDRAULIC STEEL STRUCTURES Purpose This manual describes the inspection, evaluation, and repair of hydraulic steel structures, including ... describes the inspection, evaluation, and repair of hydraulic steel structures, including preinspection identification of critical locations (such as fracture critical members and various connections) ... hydroxide often forms Deposits of film-forming materials such as oil and grease and sand and silt can also contribute to corrosion by creating crevices and ion concentration cells (2) Corrosion of steel...
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Inspection Evaluation And Repair Of Steel structures Part 1 docx
... 19 93, and ETL 11 10-2-3 51, 31 March 19 94 CECW-ED Manual No 11 10-2-6054 DEPARTMENT OF THE ARMY U.S Army Corps of Engineers Washington, DC 20 314 -10 00 EM 11 10-2-6054 December 20 01 Engineering and ... 11 10-2-6054 EM 11 10-2-6054 December 20 01 Engineering and Design INSPECTION, EVALUATION AND REPAIR OF HYDRAULIC STEEL STRUCTURES Purpose This manual describes the inspection, evaluation, and repair ... Distribution 1- 3 References 1- 4 Background 1- 5 Mandatory Requirements .1- 6 1- 1 1- 1 1- 1 1- 1 1- 1 1- 4 Chapter Causes of Structural Deterioration...
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Inspection Evaluation And Repair Of Steel structures Part 2 pot
... permission 2- 7 EM 1110 -2- 6054 Dec 01 Table 2- 1 (Continued) (Sheet of 4) 2- 8 EM 1110 -2- 6054 Dec 01 Table 2- 1 (Continued) (Sheet of 4) 2- 9 EM 1110 -2- 6054 Dec 01 Table 2- 1 (Concluded) (Sheet of 4) 2- 10 ... Descriptions and illustrations of various welded details and their fatigue categories are given in Table 2- 1 and Figure 2- 1 (AASHTO 1996) Figure 2- 1 Current AASHTO Sr-N curves 2- 6 EM 1110 -2- 6054 Dec ... cracking of a component The most important factors governing the fatigue life of structures are the severity of the stress concentration and the stress range of the cyclic loading The fatigue life of...
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Inspection Evaluation And Repair Of Steel structures Part 3 potx
... function of hydraulic steel structures is to dam and control the release of water Sources of repeated loading include changes in load due to pool fluctuations, operation of the hydraulic steel structure, ... inspection 3- 2 Inspection Procedures The following four primary steps are considered necessary to perform a periodic inspection adequately: preinspection assessment, inspection, evaluation, and ... paragraphs 3- 3 and 3- 5, respectively, to assist the inspector during the preinspection (3) Review of previous inspection reports and operations records will aid in defining occurrence of unusual...
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Inspection Evaluation And Repair Of Steel structures Part 4 docx
... 69 (10) 250 122.0 61.0 46 .0 21.0 11.0 3.9 83 (12) 147 71.0 35.0 27.0 12.0 6 .4 2.2 97 ( 14) 92 44 .0 22.0 17.0 7.5 4. 0 1 .4 110 (16) 62 30.0 15.0 11.0 5.0 2.7 0.95 1 24 (18) 43 21.0 10.0 7.9 3.5 1.9 ... periodic inspection of hydraulic steel structures, if necessary These methods, discussed in Chapter 4, include dye penetrant, magnetic particle, or eddy-current methods for inspection of cracks, and ... 10.0 7.9 3.5 1.9 0.67 138 (20) 32 15.0 7.6 5.8 2.6 1 .4 0 .49 152 (22) 24 12.0 5.7 4. 3 1.9 1.0 0.37 165 ( 24) 18 8.8 4. 4 3.3 1.5 0.79 0.28 179 (26) 14 6.9 3.5 2.6 1.2 0.62 0.22 193 (28) 12 5.6 2.8 2.1...
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Inspection Evaluation And Repair Of Steel structures Part 5 pot
... components of the structure (5) The inspector should complete a report following the actual inspection The report should include the identification and location of inspected structures, date and time of ... inspected structures, date and time of inspection, type of inspection, inspection procedure, inspection equipment, inspector identity and qualifications, and a record of discontinuities detected that ... location, size, orientation, and classification of each discontinuity Standard symbols are found in AWS (1998b) b Inspection for loose rivets The inspection of riveted structures should include...
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Inspection Evaluation And Repair Of Steel structures Part 6 docx
... Preparation of the test specimen and the test procedure for CTOD testing are described in ASTM E1290 5-5 EM 1110-2 -60 54 Dec 01 Chapter Structural Evaluation 6- 1 Purpose of Evaluation a Structural evaluation ... effect of bead configuration, and macrodefects of welded joints The quality of welds can be evaluated as a function of ductility to resist cracking during bending The top and bottom surfaces of a ... process of determining the capability of a structure to perform its intended function The evaluation includes the assessment of both the long- and short-term effects of all reported damage and unusual...
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Inspection Evaluation And Repair Of Steel structures Part 7 docx
... combination of σ and a Stress-intensity factors for various types of geometries can be calculated using the information included in Figures 6-8 through 6-16 (Barsom and Rolfe 19 87) Barsom and Rolfe and ... (Barsom and Rolfe 19 87, p 40 Reprinted by permission of Prentice-Hall, Inc., Englewood Cliffs, NJ.) Figure 6-11 Cracks growing from round holes (Barsom and Rolfe 19 87, p 42 Reprinted by permission of ... depth, and g = function that describes effect of a/w on KI 6-10 EM 1110-2-6054 Dec 01 Figure 6-14 Embedded elliptical or circular crack (Barsom and Rolfe 19 87, p 47 Reprinted by permission of Prentice-Hall,...
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Inspection Evaluation And Repair Of Steel structures Part 8 ppt
... life of the members (Pennsylvania Department of Transportation 1 988 ) Figure 6-23 Development of maintenance schedule 6-12 Recommended Solutions for Distressed Structures a If a thorough evaluation ... Association of State Highway and Transportation Officials 1996; American Institute of Steel Construction 1994; EM 1110-2-2105) (5) Integrate the crack growth rate expression (i.e., Equations 6 -8 and ... involve repair of fractured members using qualified welding procedures and improved fatigue details or bolted cover plates A long-term solution would involve detailed inspection and evaluation of...
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Inspection Evaluation And Repair Of Steel structures Part 9 pot
... vibration Because of the history of problems at this site, a thorough visual inspection was made previously on several gates (2) Inspection An in-depth inspection was made of the gate with particular ... fracture toughness A review of the hypothetical design documents indicated that the gate had been fabricated from A36 steel Since KIc testing (ASTM E 399 ) of mild steels at reasonable service ... structural integrity of the spillway gate must be evaluated (a) Since an evaluation of the local buckling of the strut arms was conducted when it was first observed and the amount of buckling on the...
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Inspection Evaluation And Repair Of Steel structures Part 10 ppsx
... Steel Structures Steel standards for the period when many hydraulic steel structures were constructed are of interest from both a structural evaluation and a repair and maintenance standpoint In a ... structural steel today and is used for both welded and bolted applications b Rivet steel standards (1) Rivet steel was not typically specified by steel grade, but only as structural steel, carbon steel, ... hydraulic steel structures were designed and built, several structural steels were commonly in use In the mid-1930's, structural steel could have been either ASTM A7-33T or ASTM A9-33T steel (Ferris...
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Inspection Evaluation And Repair Of Steel structures Part 11 pot
... carbon steel and either stainless steel or bronze), provide an electric insulator between the two metals and avoid large ratios of cathode (stainless steel) to anode (carbon steel) area Surfaces of ... repair plates or components must be compatible with the protective system of adjacent steel EM 111 0-2-3400, CWGS 09940 and CWGS 05036 provide detailed information on selection, application, and ... EM 111 0-2-6054 Dec 01 Table 7-1 Suggested Practices for Sound Welding with A7 Steel (After Stout and Doty 1953) 7-24 EM 111 0-2-6054 Dec 01 Chapter Repair Considerations 8-1...
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