Ëִܸ°

0.35¡Á1.7=0.595kN/m

( 3.3-1.7)¡Á0.5=0.8kN/m

ˮˢʯÍâǽÃæ Ë®Äà·ÛË¢ÄÚǽÃæ ºÏ¼Æ µ×²ã£º ×Ýǽ Ëִܸ°

(3.3-1.7)¡Á0.36=0.576kN/m

6.721kN/m

(4.25-1.7-0.7-0.45)¡Á0.25¡Á18=6.3kN/m

0.35¡Á1.7=0.595kN/m (3.3-1.7)¡Á0.5=0.8kN/m (3.3-1.7)¡Á0.36=0.576 kN/m

8.271 kN/m

ˮˢʯÍâǽÃæ Ë®Äà·ÛË¢ÄÚǽÃæ ºÏ¼Æ

6¡¢ÄÚ×Ýǽ×ÔÖØ

±ê×¼²ã£º ×Ýǽ

(3.3-0.7)¡Á0.2¡Á6.5=3.38 kN/m

(3.3-1.7)¡Á0.36¡Á2=1.152 kN/m

4.532kN/m

Ë®Äà·ÛË¢ÄÚǽÃæ ºÏ¼Æ µ×²ã£º ×Ýǽ

(4.25-0.7-0.45)¡Á0.2¡Á6.5=4.03 kN/m

(3.3-0.7)¡Á0.36¡Á2=1.872kN/m

5.902kN/m

Ë®Äà·ÛË¢ÄÚǽÃæ ºÏ¼Æ

7¡¢ÄÚºáǽ×ÔÖØ

±ê×¼²ã ºáǽ

(3.3-0.7)¡Á0.2¡Á6.5=3.38kN/m

(3.3-0.7)¡Á0.36¡Á2=1.872kN/m

5.252kN/m

Ë®Äà·ÛË¢ÄÚǽÃæ ºÏ¼Æ µ×²ã£º ºáǽ

(4.25-0.7-0.45)¡Á0.2m¡Á6.5=4.03kN/m

(3.3-0.7)¡Á0.36¡Á2=1.872kN/m

5.902kN/m

Ë®Äà·ÛË¢ÄÚǽÃæ ºÏ¼Æ

£¨¶þ£©»îºÉÔرê×¼Öµ¼ÆËã

9

1¡¢ÎÝÃæºÍÂ¥Ãæ»îºÉÔرê×¼Öµ

ÉÏÈËÎÝÃæ

2.0 kN/m2

²»ÉÏÈËÎÝÃæ 0.5 kN/m2

Â¥Ã棺×ßÀÈ 2.5 kN/m2

Â¥Ãæ

2.0 kN/m2

2¡¢ÊúÏòºÉÔØÏ¿ò¼ÜÊܺÉÔØ×Üͼ

ͼ3-1°å´«ºÉÔØʾÒâͼ

¾­¼ÆËãËùÓÐÏÖ½½°å°å¿éµÄ³¤±ßÓë¶Ì±ß±È¾ùСÓÚ3.0£¬ÒË°´Ë«Ïò°å¼ÆË㣬´ÓËĽdzö45oƽ·ÖÏߣ¬Çø¸ñ°å±»·ÖΪËĸöС¿é£¬Ã¿Ð¡¿éºÉÔØ´«¸øÓëÖ®ÏàÁڵĵÄÁº£¬¼û°å´«ºÉʾÒâͼ¡£°å´«ÖÁÁºÉϵÄÈý½ÇÐλòÌÝÐκÉÔصÈЧΪ¾ù²¼ºÉÔØ¡£

3¡¢A-BÖá¼ä¿ò¼ÜÁº

ÎÝÃæ°å´«¸øÁºµÄºÉÔØ£º

ºãÔØ£º2¡Á6.89¡Á1.8¡Á[1-2¡Á£¨1.8/7.2£©2+£¨1.8/7.2£©3]=21.316 kN/m

10

»îÔØ£º0.5¡Á1.8¡Á2.4¡Á[1-2¡Á£¨1.8/7.2£©2+£¨1.8/7.2£©3]=1.856kN/m

Â¥Ãæ°å´«¸øÁºµÄºÉÔØ£º

ºãÔØ£º2¡Á3.82¡Á1.8¡Á[1-2¡Á£¨1.8/7.2£©2+£¨1.8/7.2£©3]=11.818 kN/m »îÔØ£º2.0¡Á1.8¡Á2.4¡Á[1-2¡Á£¨1.8/7.2£©2+£¨1.8/7.2£©3]=7.425 kN/m ºáÁº×ÔÖرê×¼Öµ£º4.61kN/m

A-BÖá¼ä¿ò¼ÜÁº¾ù²¼ºÉÔØΪ£º ÎÝÃæÁº

ºãÔØ£ºÁº×ÔÖØ+°å´«ºÉÔØ=4.61kN/m¡Á1 m +21.316kN/m =25.926kN/m »îÔØ£º°å´«ºÉÔØ=1.856kN/m

Â¥ÃæÁº

ºãÔØ£ºÁº×ÔÖØ+°å´«ºÉÔØ=4.61kN/m¡Á1 m +11.818kN/m =16.428kN/m »îÔØ£º°å´«ºÉÔØ=7.425kN/m

3.3.2 B-CÖá¼ä¿ò¼ÜÁº

ÎÝÃæ°å´«¸øÁºµÄºÉÔØ£º

ºãÔØ£º6.89¡Á1.05¡Á5/8¡Á2=9.048 kN/m »îÔØ£º0.5¡Á1.05¡Á5/8¡Á2=0.656kN/m

Â¥Ãæ°å´«´«¸øÁºµÄºÉÔØ£º

ºãÔØ£º3.82¡Á1.05¡Á5/8¡Á2=5.014 kN/m »îÔØ£º2.0¡Á1.05¡Á5/8¡Á2=2.625 kN/m ºáÁº×ÔÖرê×¼Öµ£º2.54kN/m

B-CÖá¼ä¿ò¼ÜÁº¾ù²¼ºÉÔØΪ£º ÎÝÃæÁº

ºãÔØ£ºÁº×ÔÖØ+°å´«ºÉÔØ=2.54+9.048 =11.588kN/m »îÔØ£º°å´«ºÉÔØ=0.656kN/m

Â¥ÃæÁº

ºãÔØ£ºÁº×ÔÖØ+°å´«ºÉÔØ=2.54+5.014 =7.554kN/m »îÔØ£º°å´«ºÉÔØ=2.625KN/m

3.3.3 C-DÖá¼ä¿ò¼ÜÁº£ºÍ¬A-BÖá¼ä¿ò¼ÜÁº

11

3.3.4 AÖáÖù×ÝÏò¼¯ÖкÉÔؼÆËã

¶¥²ãÖù

Å®¶ùǽ×ÔÖØ£¨×ö·¨Ç½¸ß700£¬100mmµÄ»ìÄýÍÁѹ¶¥£©

0.25m¡Á0.7¡Á18 +25¡Á0.1¡Á0.25+(1.2¡Á2+0.25)¡Á0.5

=5.1kN/m

ÏÖ½½Ìì¹µ×ÔÖØ£º25¡Á£¨0.60+0.20£©¡Á 0.08+£¨0.60+0.20£©¡Á£¨0.5+0.36£©

=2.13kN/m

¶¥²ãÖùºãÔØ=Å®¶ùǽ¼°Ìì¹µ×ÔÖØ+Áº×ÔÖØ+°å´«ºÉÔØ

=£¨5.1+2.13£©¡Á7.2+4.61¡Á(7.2-0.5)+21.316¡Á7.2 =236.418kN

¶¥²ãÖù»îÔØ=°å´«»îÔØ

=1.856¡Á7.2=13.363KN

±ê×¼²ãÖùºãÔØ=ǽ×ÔÖØ+Áº×ÔÖØ+°å´«ºÉÔØ

=6.721¡Á(7.2-0.5)+4.61¡Á(7.2-0.5)+5.909¡Á7.2=119.863kN

±ê×¼²ã»îÔØ=°å´«»îÔØ=2.0¡Á5/8¡Á1.8¡Á7.2£«2.0¡Á[1£­2¡Á£¨1.8/7.2£©2+ £¨1.8/7.2£©3]=39.284kN

3.3.5 BÖáÖù×ÝÏò¼¯ÖкÉÔصļÆËã

¶¥²ãÖùºãÔØ=Áº×ÔÖØ+°å´«ºÉÔØ=4.61¡Á(7.2-0.5)+12.92¡Á£¨1.8+1.8£©+

2¡Á4.61¡Á7.2/4+6.89¡Á1.8¡Á[1-2¡Á£¨1.8/7.2£©2+£¨1.8/7.2£©3]¡Á 7.2 + 6.89 ¡Á 1.05¡Á [ 1- 2¡Á£¨1.8/7.2£©2+£¨1.8/7.2£©3]¡Á7.2=219.911kN

¶¥²ãÖù»îÔØ=°å´«»îÔØ=0.76¡Á£¨1.8+1.8£©+0.5¡Á1.8¡Á[1-2¡Á£¨1.8/7.2£©2+ £¨1.8/7.2£©3]¡Á7.2+0.5¡Á1.05¡Á[1-2¡Á£¨1.8/7.2£©2+£¨1.8/7.2£©3]¡Á7.2=11.874kN

±ê×¼²ãÖùºãÔØ=Áº×ÔÖØ+°å´«ºÉÔØ£«Ç½×ÔÖØ=4.61¡Á(7.2-0.5)+ 5.909¡Á£¨1.8+1.8£©+2¡Á4.61¡Á6/4+3.82¡Á1.8¡Á[1-2¡Á£¨1.8/7.2£©2+£¨1.8/7.2£©3]¡Á7.2+3.82¡Á1.05¡Á[1-2¡Á£¨1.8/6.0£©2+£¨1.8/6.0£©3]¡Á7.2£«5.902¡Á£¨7.2-0.5£©=178.110kN

±ê×¼²ãÖù»îÔØ = °å´«»îÔØ = 0.76¡Á£¨1.8+1.8£©+2.0¡Á1.8¡Á[1-2¡Á£¨1.8/7.2£©2 +

12