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qA3=qB3=qG2=qH2=3.55?0.5?3.9=6.92 kN/m(·åÖµ)

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q=[1?2(3.923.93a2a)?()]?6.92=5.8kN/m )?()3]aq=[1?2(2b2b2?6.32?6.3 qA2=qB2=qG3=qH3=3.55?0.5?3.9=6.92 kN/m(·åÖµ) ÔòµÈЧ¾ù²¼ºÉÔØΪ

q=5aq/8=5?6.92/8=4.33 kN/m

ËùÒÔ£¬×÷ÓÃÔڱ߿çÖù¶¥µÄ¼¯ÖкÉÔØΪ

F71 =£Û£¨4.84+4.33+1.63£©?7.8/2+£¨3.05+5.8+4.08+1.72£©?6.3/

£¨2?2£©£Ý?2+37.44+179.16=167.86+187.96=354.82KN

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F72=354.82+27=381.82KN

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Áù²ã F61=167.86+381.82=549.68KN F62=549.68+27=576.68KN Îå²ã F51=167.86+576.68=744.54KN F52=744.54+27=771.54KN ËIJã F41=167.86+771.54=939.4KN F42=939.4+27=966.4KN Èý²ã F31=167.86+966.4=1134.26KN F32=1134.26+27=1161.26KN ¶þ²ã F21=167.86+1161.26=1329.12KN F22=1329.12+27=1356.12KN Ò»²ã F11=167.86+1356.12=1523.98KN F12=1523.98+47.7=1571.68KN 2 Öпç

¶¥²ã£ºÁ¬ÏµÁº×ÔÖØ qL14=qL15= qL18=qL19=0.3?0.6?25=4.5 kN/m Áº²à·ÛË¢ 2?£¨0.6-0.1£©?0.02?17=0.34 kN/m qA4=qB4=qG1=qH1=5.66?0.5?3.9=11.04 kN/m(·åÖµ) ÔòµÈЧ¾ù²¼ºÉÔØΪ

q=5aq/8=5?11.04/8=6.9 kN/m

qE1=qF2=qC1=qD2=5.66?0.5?2.55=7.22kN/m(·åÖµ)

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q=[1?2(2.5522.553a2a)?()]?7.22=5.93kN/m )?()3]aq=[1?2(2b2b2?3.92?3.9ËùÒÔ£¬×÷ÓÃÔÚÖпçÖù¶¥µÄ¼¯ÖкÉÔØΪ

F81 =£¨4.84+6.9+5.93£©?7.8?2/2+£¨6.3+2.55£©?3.05/2+4.15?2.55/2 +9.25?6.3/2=185.75KN ×÷ÓÃÔڱ߿çÖùµ×µÄ¼¯ÖкÉÔØΪ F82=185.75+42.2=227.95KN

Æ߲㣺 Á¬ÏµÁº×ÔÖØ qL8=qL9= qL14=qL15=0.3?0.6?25=4.5 kN/m

- 9 ¨C

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Áº²à·ÛË¢ 2?£¨0.6-0.1£©?0.02?17=0.34 kN/m ºáÏò´ÎÁº×ÔÖØ L18=qL19=qL24=qL25=L20=qL21=qL22=qL23

=0.25?0.45?25=2.81kN/m

Áº²à·ÛË¢ 2?£¨0.45-0.1£©?0.02?17=0.24kN/m ºáÏò´ÎÁºÉϺáǽ×ÔÖØ 0.2?£¨3-0.45£©?8=4.08kN/m ǽÃæ·ÛË¢ 2?£¨3-0.45£©?0.02?17=1.73kN/m

qA4=qB4=qG1=qH1=3.55?0.5?3.9=6.92kN/m(·åÖµ)

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q=5aq/8=5?6.92/8=4.33kN/m

qE1=qF2=qC1=qD2=3.55?0.5?2.55=4.53kN/m(·åÖµ) ÔòµÈЧ¾ù²¼ºÉÔØΪ

q=[1?2(2.5522.553a2a)?()]?4.53=3.72kN/m )?()3]aq=[1?2(2b2b2?3.92?3.9ËùÒÔ£¬×÷ÓÃÔÚÖпçÖù¶¥µÄ¼¯ÖкÉÔØΪ

F71 =(4.84+4.33+3.72)?7.8?2/2+£¨6.3+2.55£©?8.86/2+2.83?2.55/2 +5.8?6.3/2+242=161.63+227.95=389.58KN ×÷ÓÃÔڱ߿çÖùµ×µÄ¼¯ÖкÉÔØΪ F72=389.58+42.2=431.78KN

ͬÀí¿ÉËãµÃÆäÓà¸÷²ãÖù¼¯ÖкÉÔØ£¬Ôڴ˲»ÔÙ׸Êö£¬½öÁнá¹ûÈçÏ Áù²ã F61=161.63+431.78=593.41KN F62=593.41+42.2=635.61KN Îå²ã F51=161.63+635.61=797.24KN F52=797.24+42.2=839.44KN ËIJã F41=161.63+839.44=1000.74KN F42=1000.74+42.2=1042.94KN Èý²ã F31=161.63+1042.94=1204.24KN F32=1204.24+42.2=1246.44KN ¶þ²ã F21=161.63+1246.44=1408.07KN F22=1408.07+42.2=1450.27KN Ò»²ã F11=161.63+1450.27=1611.9KN F12=1611.9+74.5=1686.4KN ºãÔØ×÷ÓÃÊܺɼòͼÈçͼ3.1Ëùʾ

3.2 »îºÉÔØ

²éºÉÔع淶£ºÂ¥Ãæ¾ù²¼»îºÉÔرê׼ֵΪ2.0KN/m,ÉÏÈËÎÝÃæ¾ù²¼»îºÉÔرê׼ֵΪ2.0KN/m2 ¡£

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3.2.1 ×÷ÓÃÔÚ¿ò¼ÜÁºÉϵĻîºÉÔØ

1 ×÷ÓÃÔÚ¿ò¼ÜÁºÉϵľù²¼»îºÉÔØ

qL1=qL5=2.0?0.5?3.9?2=7.8kN/m(·åÖµ)

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- 10 ¨C

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28KN.M152.16KN22.52KN/M185.75KN22.32KN/M242KN403.63KN146.15KN146.15KN16.96KN/M7.94KN/M16.96KN/M185.75KN157.57KN157.57KN18.73KN/M7.94KN/M18.73KN/M242KN403.63KN22.32KN/M22.32KN/M22.52KN/M28KN.M152.16KN188.16KN29.4KN.M356.02KN392.02KN29.4KN.M559.88KN188.16KN29.4KN.M356.02KN392.02KN29.4KN.M559.88KN595.88KN29.4KN.M763.74KN799.74KN29.4KN.M967.6KN1003.6KN29.4KN.M1171.46KN1207.46KN29.4KN.M1375.32KN1411.32KN29.4KN.M1579.18KN157.57KN157.57KN22.32KN/M18.73KN/M7.94KN/M18.73KN/M459.88KN459.88KN621.51KN621.51KN157.57KN157.57KN22.32KN/M18.73KN/M7.94KN/M18.73KN/M677.76KN677.76KN839.39KN839.39KN157.57KN157.57KN22.32KN/M18.73KN/M7.94KN/M18.73KN/M895.64KN895.64KN1057.27KN1057.27KN157.57KN157.57KN22.32KN/M18.73KN/M7.94KN/M18.73KN/M1113.52KN1113.52KN1275.15KN1275.15KN157.57KN157.57KN22.32KN/M18.73KN/M7.94KN/M18.73KN/M1331.4KN1331.4KN1493.03KN1493.03KN157.57KN157.57KN22.32KN/M18.73KN/M7.94KN/M18.73KN/M1549.28KN1549.28KN1710.91KN1710.91KN22.32KN/M595.88KN29.4KN.M763.74KN799.74KN29.4KN.M967.6KN22.32KN/M22.32KN/M1003.6KN29.4KN.M1171.46KN22.32KN/M1207.46KN29.4KN.M1375.32KN1411.32KN29.4KN.M1579.18KN22.32KN/M1626.88KN1785.41KN1785.41KN1626.88KN6300AB7500C6300D

ͼ3.1 ºãÔØ×÷ÓÃÊܺɼòͼ

q=[1?2(3.923.93a2a)?()]?7.8=6.54KN/m )?()3]aq=[1?2(2b2b2?6.32?6.3- 11 ¨C

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qL2=qL4=2.0?0.5?2.55?2=5.1kN/m(·åÖµ)

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q=5aq/8=5?5.1/8=3.19kN/m

2 ×÷ÓÃÔÚ¿ò¼ÜÁºÉϵļ¯ÖлîºÉÔØ

qE3=qF4=qC3=qD4=2.0?0.5?2.55=5.1kN/m(·åÖµ)

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q=[1?2(2.5522.553a2a)?()]?5.1=4.0KN/m )?()3]aq=[1?2(2b2b2?3.92?3.9 qI1=qI2=qK1=qK2=2.0?0.5?2.4=2.4kN/m£¨¾ùÖµ£© qC2=qE2=qF1=qD3=2.0?0.5?2.55=2.55kN/m£¨·åÖµ£© ÔòµÈЧ¾ù²¼ºÉÔØΪ

q=5aq/8=5?2.55/8=1.59kN/m

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F=£Û1.59?2.55/(2?2)+2.4?7.8/2+4.0?7.8/2£Ý?2 =51.95KN

3.2.2 ×÷ÓÃÔÚ¿ò¼ÜÖùÉϵļ¯ÖлîºÉÔØ

1 ±ß¿ç qA2=qB2=qG3=qH3=2.0?0.5?3.9=3.9kN/m£¨·åÖµ£© ÔòµÈЧ¾ù²¼ºÉÔØΪ

q=5aq/8=5?3.9/8=2.44kN/m

qA3=qB3=qG2=qH2=2.0?0.5?3.9=3.9kN/m£¨·åÖµ£© ÔòµÈЧ¾ù²¼ºÉÔØΪ

3.923.93)?()]?3.9=3.27 kN/m q=[1?2(2?6.32?6.3ËùÒÔ£¬×÷ÓÃÔڱ߿çÖù×ÓÉϵļ¯ÖлîÔØΪ

FA=FD=2.44?7.8?2/2+3.27?6.3?2/(2?2)=29.33KN

2 Öпç qA4=qB4=qG1=qH1=2.0?0.5?3.9=3.9kN/m£¨·åÖµ£© ÔòµÈЧ¾ù²¼ºÉÔØΪ

q=5aq/8=5?3.9/8=2.44kN/m

qC1=qE1=qF2=qD2=2.0?0.5?2.55=2.55kN/m£¨·åÖµ£© ÔòµÈЧ¾ù²¼ºÉÔØΪ

q=[1?2(2.5522.553)?()]?2.55=2.09kN/m 2?3.92?3.9ËùÒÔ£¬×÷ÓÃÔڱ߿çÖù×ÓÉϵļ¯ÖлîÔØΪ

FB=FC=(2.44+2.09)?7.8+1.59?2.55/2+3.27?6.3/2=47.66KN »îÔØ×÷ÓÃÊܺɼòͼÈçͼ3.2Ëùʾ

- 12 ¨C

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