???????????????
?????????????????????????
1?????????????1.95??105MPa???????????????????????????????
??1.96 19.3 19.1??/3=1.93??105MPa??
2?????????????????μ???????????????
??L=P*L*(1-e-(kx ???))/(kL ???)/Ay/Eg
????????
???????????????????????δ???????????????????????棬???????????????????????????????????????
???????????????????????????????????????????? ??
???????????????
22*2300*9000 70??
24*2000*8000 80??
30*2100*9000 59??
35*2100*8000 60??
50*2100*8000 30??
????11??16????й?????2??q690qe?????????????С??????
