½á¹¹Á¦Ñ§Á·Ï°Ìâ¼°´ð°¸1 ÏÂÔØ±¾ÎÄ

q

C B D A

°Ë.(±¾´óÌâ15·Ö) ÓÃÁ¦·¨×÷ͼ½á¹¹µÄMͼ.EI=³£Êý.

EI EI 2q EI 2EI EI 2q

l l l

½á¹¹Á¦Ñ§ÊÔ¾í´ð°¸

Èý£® ÊÇ·ÇÌâ

1 . £¨X£©£»2. £¨X£©£» 3 . £¨O£©£» 4. £¨O£©

ËÄ£® Ñ¡ÔñÌâ

1 £¨ A £© 2. £¨ B £© 3. £¨A£© 4. (B )

Èý ͼʾÌåϵΪ¾ßÓÐÒ»¸ö¶àÓàÔ¼ÊøµÄ¼¸ºÎ²»±äÌåϵ

ËÄ Çó½â¹ý³ÌÈçÏÂËùʾ

5. ( C)

6 200/9

»ù±¾Ìåϵ µ¥Î»Íä¾ØÍ¼ ×îÖÕÍä¾ØÍ¼

Îå ÒòΪ½á¹¹¶Ô³Æ¡¢ºÉÔØ¶Ô³Æ£¬Òò´Ë¿ÉÈ¡°ë½á¹¹ÈçÏ£¬¼ÆËã¹ý³Ì¼°Íä¾ØÍ¼ÈçÏÂͼ

0 0.5 -0.5 -0.25 0 0 0.125 0.125 0.0625 0 0.5 -0.5 -0.125 0.125 0.0625

20 80 60 240 2 B B 1 6 FPl/8

M1¡÷=4 mm X1

MB X1?1?11X1??1C???11?216EI?1C?0X1?100/27M?M1X1FP FPl/2

FPl/16

FPl/8

FPl/2 ? 0.5 0.5

MPM1Áù µ¥Î»ºÍºÉÔØÍä¾ØÍ¼Îª ÓÃͼ³Ë¿ÉÇóµÃ

?B?2970?0.14 mEIÆß »ù±¾Ìåϵ¡¢µ¥Î»ÓëºÉÔØÍä¾ØÍ¼ÈçÏÂËùʾ

Î»ÒÆ·¨·½³Ì¡¢ÏµÊý¼°Çó½â½á¹ûÈçÏ rZ?R?01111P

°Ë.ÒòΪ½á¹¹¶Ô³ÆºÉÔØ·´¶Ô³Æ£¬¿ÉÀûÓöԳÆÐÔÈçÏÂ

q q 2q q

q

q

q

ql2/64 5ql2/64 C B A Z1 q D i 4i Z1?1ql2/8 3i 2i M1ͼMPͼr11?8iR1P??ql2/8Z1?ql2/64iM?M1Z1?MP4ql2/64 Mͼ2ql2/64

¶Ô³Æ°ë½á¹¹ÓÃÎ»ÒÆ·¨Çó½â

¶Ô³ÆÍä¾ØÍ¼

l/2 ·´¶Ô³Æ½á¹¹ÓÃÁ¦·¨Çó½â 4ql2/72

4ql2/72

2ql2/72

2ql2/72

q r11Z1?R1P?0r11?6iR1P?ql2/12Z1??ql2/72iM?M1Z1?MP

q X1X1?1?11X1??1P?0M1ͼql2/2

ql/7

2

MPͼql2/7

?11?7l3/24EI?1P?ql4/12EIX1?2ql/7M?M1X1?MPql2/7 ql2/7 2ql2/7 5ql2/14

10ql2/14 5ql2/14

·´¶Ô³ÆÍä¾ØÍ¼ 86ql2/504 172ql2/504

µþ¼Ó¶Ô³Æ¡¢·´¶Ô³ÆÍä¾ØÍ¼µÃ×îÖÕÍä¾ØÍ¼

58ql2/504 58ql2/504 86ql2/504 Mͼ202ql2/504 304ql2/504

202ql2/504