䓹ܵc䓹ܱ^L(zhng)СB䓹ܵg(sh)ܱ^ (qing) _(qing)ȣȹܣ\(yn)É۔(sh)ˮԱ^ܺı^ȁ(li)^DZ^(yu)Խģн^(du)ă(yu)(sh)ԔՈ(qng)J(rn)濴¡
һg(sh)ܱ^
1 Ҏ(gu)`
䓹ܾҎ(gu)`ԣᘌ(du)κһNmõļg(sh)(sh)MM(jn)Ҏ(gu)؝M(mn)͵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)ȿ154~340MPa֮gܿԽӿڣܲҲԵ
䓏(f)ϹܺͲ䓹ܣ䓹ôBϹܵFܵBӣ䓹ܵc䓹B
_(qing)ȣ䓹ܾнܳĿ_(qing)300kgf?cm/cm2 Ќ(sh)(yn)(bio)2600䓹1.8m̎δκΓpģ
3.ȹܣڄȹܷ߶ܝM(mn)䓹ڽ(yng)^СĹܱg(j)ӊAɰӁ(li)M(jn)ɝM(mn)Ñ(h)κ΄Ҫ䓹ܱ턂ȝM(mn)ɲؿ]
ڽܶijdЧd܇(ch)䓹ܿͨ^(gu)ď׃(li)Ю(dng)dȥ(dng)֏(f)ԭ 䓹ڱض׃º(jin)αГpĻ_(ki)ѡ
4.\(yn)É۔(sh)䓹ܵĻwǘO˰(wn)ĸ߷Ypĉǰ6Ҏ(gu)ģԴ_50\(yn)É۔(sh)Ҋ(jin)AWWAASTM Ҏ(gu)
䓏(f)ϹܺͲ䓹䓹ôBӣϹܵFܵB䓹ܵc䓹B
䓹\(yn)É۔(sh)һ20ꡣ\(yn)D(zhun)go(h)llyȴM(fi)ø䓹\(yn)D(zhun)r(sh)܃(ni)ˮ|(zh)?ch)?O(sh)؎Ƿ늈(chng)Ҫأ(hu)ʹܱڰl(f)gҎ(gu)Ҏ(gu)tw푪(yng)Ϳr|(zh)Y ?yn)ͿYc䓹ܵԭϲͬL(zhng)r(sh)g\(yn)D(zhun)ᡢˮ_Ч(jin)ΰl(f)ӵ䣬uʧ ͿȻʹܵıFӰl(f)Ч늻W(xu)g،p\(yn)É۔(sh)
5 ˮԱ^
䓹ă(ni)ʮ֝(rn)²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ܣ䓹ôBϹܵFܵBӣ䓹ܵc䓹B
ȡ䓹ܵHazen-Williams ƽֲϵ(sh)Cֵ100䓹ܵC150t12ӢIJ䓹c14Ӣ䓹ܵͬ f(shu)ͬĹl£䓹ܵ䓹Ҫ36%
䓏(f)ϹܺͲ䓹ܣ䓹ôBϹܵFܵBӣ䓹ܵc䓹B߀](mi)п]òܹܵ߀䓹ܵԒ(hu)ڿ]]Ҳʲô(wn)}