Graphical Method for the Analysis of Bridge Trusses: Extended to Continuous Girders and Draw SpansD. Van Nostrand., 1875 - 79 páginas |
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Página 8
... construction . Draw a vertical line 1-2 , and measure on the same W1 , W2 , W3 and W4 successively , to any convenient scale of pounds or tons to the inch . Draw 1-0 parallel to A C and 2-0 parallel to BF . Connect the point 0 with the ...
... construction . Draw a vertical line 1-2 , and measure on the same W1 , W2 , W3 and W4 successively , to any convenient scale of pounds or tons to the inch . Draw 1-0 parallel to A C and 2-0 parallel to BF . Connect the point 0 with the ...
Página 17
... construction for every position of the load , we should discover some facts which are of importance as rendering needless the drawing of so many diagrams ; and we may see indications which ANALYSIS OF BRIDGE TRUSSES . 17.
... construction for every position of the load , we should discover some facts which are of importance as rendering needless the drawing of so many diagrams ; and we may see indications which ANALYSIS OF BRIDGE TRUSSES . 17.
Página 25
... construction has been made . Thus we have a check on the accuracy of our work . By dispensing with this check it is only necessary to determine one of the horizontal stresses , and Diagrams I. to IV . of Fig . 6 , are enlarged one and ...
... construction has been made . Thus we have a check on the accuracy of our work . By dispensing with this check it is only necessary to determine one of the horizontal stresses , and Diagrams I. to IV . of Fig . 6 , are enlarged one and ...
Página 33
... construction we must draw A'B ' and C ' B ' . We know that B ' must lie below the curve ( for we have a negative moment of flexure over B ) , and we usually have two points of contra - flexure , where A'B ' and C'B ' cut the curve . We ...
... construction we must draw A'B ' and C ' B ' . We know that B ' must lie below the curve ( for we have a negative moment of flexure over B ) , and we usually have two points of contra - flexure , where A'B ' and C'B ' cut the curve . We ...
Página 43
... construction follows simply . There is no failure when the beam happens to be hori- zontal over the pier B , for then MA and NC are each zero , and therefore area C ' P ' D ' . dl area K'B ' D ' . c k , or K'B ' G ' . b h = A'F ' G ...
... construction follows simply . There is no failure when the beam happens to be hori- zontal over the pier B , for then MA and NC are each zero , and therefore area C ' P ' D ' . dl area K'B ' D ' . c k , or K'B ' G ' . b h = A'F ' G ...
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Términos y frases comunes
abutment applied bending moment bending moments bolt Bridge centre of gravity centre pier centre vertical change of inclination Cloth compression construction continuous girder curve determine diagonal draw span drawn engravings equal experiments feet figure find the stresses fully loaded Guns horizontal distance horizontal line horizontal stress Hypsometry Illustrated inclined chord Iron J. P. WHITNEY line parallel load advances load extends load line manufacture maxima stresses Mechanics ment Mining moment curve moving load multiplied obtained ordinates P₁ panel joint parabola parabolic segment plane of section points of contra-flexure points of support portion position PRACTICAL TREATISE proportional readily rolling load scale shearing diagram shearing force shearing stress side single span Steel STRENGTH OF MATERIALS stress diagram supporting force Survey tangent Telegraph tension tion top chord travelling load triangle U. S. Navy unloaded vertical line Water weight wood-cuts ZERAH COLBURN
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