䓹ܵc䓹ܱ^LСB䓹ܵg(sh)ܱ^ (qing) _(qing)ȣȹ\(yn)É۔(sh)ˮԱ^ܺı^ȁ^DZ^(yu)Խģн^(du)ă(yu)ԔՈJ(rn)濴
һg(sh)ܱ^
1 Ҏ(gu)`
䓹ܾҎ(gu)`ᘌ(du)κһNmõļg(sh)(sh)MM(jn)Ҏ(gu)죬؝M͵Ҫ 䓹ܵҎ(gu)ᘌ(du)ԾͲЩֻڱض̶Ͼ@Nɫ
2 (qing)ȹ
䓹ܾЃ(yu)ď(qing)ȹSɵ_(d)6.4MPaҎ(gu)ȫϵ(sh)6
(qing)ȣ(j)wSO(sh)cr䓹ܵı^h(hun)(qing)ȿ140~520MPa֮gS(qing)ȿ70~320MPa֮g
(qing)ȣ(j)wSO(sh)cr䓹ܵı^h(hun)(qing)ȿ154~340MPa֮gܿԽӿܲҲԵ
䓏(f)ϹܺͲ䓹ܣ䓹ôBϹܵFܵB䓹ܵc䓹B
_(qing)ȣ䓹ܾнܳĿ_(qing)300kgf?cm/cm2 Ќ(sh)(yn)(bio)2600䓹1.8m̎δκΓpģ
3.ȹܣڄȹܷ߶ܝM䓹ڽ(yng)^СĹܱg(j)ӊAɰӁM(jn)ɝMÑκ΄Ҫ䓹ܱ턂ȝMɲؿ]
ڽܶijdЧd܇䓹ܿͨ^ď׃Ю(dng)dȥ(dng)֏(f)ԭ 䓹ڱض׃ºαГpĻ_ѡ
4.\(yn)É۔(sh)䓹ܵĻwǘO˰(wn)ĸ߷Ypĉǰ6Ҏ(gu)ģԴ_50\(yn)É۔(sh)ҊAWWAASTM Ҏ(gu)
䓏(f)ϹܺͲ䓹䓹ôBϹܵFܵB䓹ܵc䓹B
䓹\(yn)É۔(sh)һ20\(yn)D(zhun)go(h)llyȴM(fi)ø䓹\(yn)D(zhun)r(sh)܃(ni)ˮ|(zh)܇ˮ O(sh)؎Ƿ늈Ҫ(hu)ʹܱڰl(f)gҎ(gu)Ҏ(gu)tw푪(yng)Ϳr|(zh)Y ?yn)ͿYc䓹ܵԭϲͬLr(sh)g\(yn)D(zhun)ˮ_Чΰl(f)ӵ䣬uʧ ͿȻʹܵıFӰl(f)Ч늻W(xu)g،p\(yn)É۔(sh)
5 ˮԱ^
䓹ă(ni)ʮ֝²䓹ܵHazen-Wllliamsֲϵ(sh)Cֵ160165䱣Ҏ(gu)ֵ50Ӌ(j)150 䓹ܵCֵ120(jng)\(yn)úC65CֵĽ?yn)ܵıFӰl(f)Ч늻W(xu)gӳڃ(ni)ڽY(ji)
䓹c䓹ܵM(jn)б^Ĕ(sh)(j)?yn)䓹ܵĿ϶ֲڶȞ?.05mmg䓹ܵĿ϶ֲڶȞ3mmgδ g䓹ܵĿ϶ֲڶȵ60
䓏(f)ϹܺͲ䓹䓹ôBϹܵFܵBӣ䓹ܵc䓹B
ȡ䓹ܵHazen-Williams ƽֲϵ(sh)Cֵ100䓹ܵC150t12ӢIJ䓹c14Ӣ䓹ܵͬ fͬĹl䓹ܵ䓹Ҫ36%
䓏(f)ϹܺͲ䓹䓹ôBϹܵFܵB䓹ܵc䓹B߀]п]òܹܵ߀䓹ܵԒڿ]]Ҳʲô}