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?NpINpIe2?MG1??tu,90?MG2p ?pc,l2????????A?WI?t,20W?u?opnnp?n??4.4?15.874?9.93?1.546?8.8MPa ËÄ·Öµã½ØÃæ:

NpI??1395?43.35?107.6?69.6??2368?2781.1kN?pc,l2????NpI?An=4.37+11.37-8.37-1.345 =6.025MPa

Ap?AsA?5.65

?NpIe?MG1??tu,90?MG2 ?????In?Wnp??tu,20?Wop2p

ËùÒÔ: ?pc?(6.025?8.8)/2?7.41MPa.

???EP?2763?2454.5?0.00584 3893.827*10, ?1?i2I0A0È¡¿çÖÐÓëËÄ·Öµã½ØÃæµÄƽ¾ùÖµ¼ÆËã:

APep?ASes2763*1132.6?2454.5*1187.6¿çÖнØÃæ:eps???1158.47mm

Ap?As2520?2454.5ËÄ·Öµã½ØÃæ: eps??ps?1?e2pse2psAPep?ASesAp?As=1058.52mm

ËùÒÔ, ?pc?(1158.47+1058.52)/2=1108.5mm A0?893.827*103mm3

I0?(325.475?321.5)*109/2?323.488*109mm4

?ps?1?e2psi2?1?e2psI0A0=1+1108.5¡Á1108.5/(323.488¡Á10

9/893.827¡Á

103)=4.39

½«ÒÔÉϸ÷Ïî´úÈë¼´µÃ:

?l6?0.9*(1.95*20?5.65*7.41*1.69)=79.27MPa

1?15*0.00584*4.39 37

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MG21MG22?MQ600.6*1062743.9*106?kt?'????10.3MPaW0PW0P2.817*1082.874*108 ËùÒÔ¸ÖÊøÓ¦Á¦Îª:

?ymax??y??ny??1159.82?5.76*8.41?1267.35MPa?[?y]?0.65?1860?1209MPa

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3511.22?1033511.2?103?1123.02466.24?106?hs???38798.559?104.835*104.835?108?1.345MPa(ѹ£©

3511.22?1033511.22?103?1123.02466.24?106?hx???38798.559?102.281?102.281?108'?10.9MPa?fck(0.7*29.6?20.72MPa)

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