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λã > ɹ > wģW(wng)ʩY(ji)(gu)|(zh)...wģW(wng)ʩY(ji)(gu)|(zh)
䓽Ӌ(j)Ҏ(gu)t
1䓽(yng)^(q)eF(xin)A(y)Ƙ(gu)ͬ䓷NҎ(gu)քeO(sh)Ӌ(j)L(zhng)ȳԆλԇӋ(j)
2Ӌ(j)䓽r(sh)O(sh)Ӌ(j)Ҏ(gu)䓽L(zhng)ȵҎ(gu)L(zhng)Ӌ(j)㣻O(sh)Ӌ(j)δҎ(gu)L(zhng)ȵģѰ䓽ēp֮(ni)Ӌ(j)L(zhng)䓽ͲDȽ^Ԃ(g)Ӌ(j)
3ȏA(y)(yng)䓽(gu)γߴӋ(j)L(zhng)A(y)(yng)䓽O(sh)Ӌ(j)DҎ(gu)A(y)(yng)䓽A(y)L(zhng)ȣ^(q)eͬ^քeҎ(gu)Ӌ(j)㣺
1)ͺϽ䓽ɶ˲ݗU^ߕr(sh)A(y)(yng)䓽A(y)L(zhng)Ȝp0.35mݗUӋ(j)
2ͺϽ䓽һ˲û^ƬһݗU^ߕr(sh)A(y)(yng)䓽L(zhng)ȰA(y)L(zhng)Ӌ(j)ݗUӋ(j)
3ͺϽ䓽һ˲û^Ƭһ˲Î͗l^ߕr(sh)A(y)(yng)䓽0. 15mɶ˲Î͗l^ߕr(sh)A(y)(yng)䓽0.3mӋ(j)
4ͺϽ䓽ú^r(sh)A(y)(yng)䓽L(zhng)0. 35mӋ(j)
5ͺϽ䓽䓽gJM XM QM^߿L(zhng)20mԃ(ni)r(sh)A(y)(yng)䓽L(zhng)lmL(zhng)20mϕr(sh)A(y)(yng)䓽L(zhng)1.8mӋ(j)
6̼䓽zF^L(zhng)20mԃ(ni)r(sh)A(y)(yng)䓽L(zhng)lmL(zhng)20mϕr(sh)A(y)(yng)䓽L(zhng)18m.
7̼䓽zɶ˲煴^r(sh)A(y)(yng)䓽zL(zhng)0. 35mӋ(j)㡣F(xin)ʼnĹӋ(j)Ҏ(gu)tʽ
1F(xin)ܽY(ji)(gu)ļӋ(j)㷽Dʾߴm3Ӌ(j)(yng)۳Tڼ0.3m2ռweӋ(j)㹫ʽVL(zhng)ߡ0.3m2Te
ʽУL(zhng)≦LУ(ni)L(ni)߾(c) ߡԻA(ch)ϱDҎ(gu)(j)䓽ĩҪ1800 1350 900^r(sh)AֱD(yng)С䓽ֱd2.5ƽֱL(zhng)ȲС䓽ֱd3HRRB335(j)HRB400(j)䓽ď(ni)(yng)С䓽ֱd4^ƽֱL(zhng)ȑ(yng)O(sh)Ӌ(j)Ҫ 1800ÿ(g)^L(zhng)=6.25 d( d䓽ֱmm)
A(ch)Ӌ(j)Ҏ(gu)tʽ
≦lλA(ch)Ĺ≦lλA(ch)ľL(zhng)ȡlλA(ch)Ľe
(ni)lλA(ch)Ĺ(ni)lλA(ch)L(zhng)L(zhng)ȡlλA(ch)Ľe
ע⣺L(zhng)Ӌ(j)㑪(yng)ŗlλA(ch)ֱбӃL(zhng)Ӌ(j)
2MûA(ch)Ӌ(j)㼰ʽ
MûA(ch)=MûA(ch)eMûA(ch)װ崹ֱֺȣϲ_(ti)we
3(d)A(ch) Ū(d)A(ch)cڻA(ch)ϱֽ磩
(1)λA(ch) V=L(zhng)
(2)AλA(ch) V=ƸA(L(zhng))
(3)^FλA(ch) V=V1+V2=1/6 h1 AB+A+aB+b+ab+ABh2
V1A(ch)ϲ_(ti)weV2A(ch)²L(zhng)wweh1_(ti)߶AB_(ti)߅L(zhng)ab_(ti)߅L(zhng)h2A(ch)²L(zhng)w߶
Ӌ(j)Ҏ(gu)tʽ
(gu)Ӌ(j)
٘(gu)we(gu)we+Rwe=HAB+0.03bn
ʽУH(gu)߶ AB(gu)L(zhng) b(gu)cuҧ1/2 nR߅(sh)
٬F(xin)O(sh)Ӌ(j)DʾߴweӋ(j)۳(gu)(ni)䓽A(y)Fռwe
wee*
ߣ
a (yng)ϱ(ǰϱ)һӘǰ±֮gĸ߶Ӌ(j)㡣
b o(yng)ϱ(ǰϱ)ñ±֮gĸ߶Ӌ(j)
c ߣ(yng)ϱ픸߶Ӌ(j)
d A(y)ƻO(sh)Ӌ(j)DʾߴweӋ(j)㣬۳(gu)(ni)䓽A(y)Fռweţ(yng)weӋ(j)
䓽Ҏ(gu)t
1һӋ(j)㹫ʽĽe*L(zhng)ȰO(sh)Ӌ(j)DʾߴweӋ(j)۳(gu)(ni)䓽A(y)Fռwe뉦(ni)^|we(ni)
2L(zhng)ȡ
cBӕr(sh)L(zhng)(c)cBӕr(sh)L(zhng)(c)
3Ȧ
≦ȦĹ≦ȦľL(zhng)ȡȦĽe
(ni)ȦĹ(ni)ȦL(zhng)L(zhng)ȡȦĽe 䓽ĹӋ(j)
1һF(xin)Ӌ(j)㷽F(xin)尴O(sh)Ӌ(j)DʾߴweӋ(j)۳(gu)(ni)䓽A(y)F(g)e0.3m2ԃ(ni)ĿռweӋ(j)㹫ʽVL(zhng)匒
2ϵָcF(xin)һw乤weӋ(j)(c)we֮Ӌ(j)
3oϵֱָñ֧εİ塣wecñweӋ(j)
4ƽָoֱɉ֧εİ乤匍(sh)weӋ(j)
3A(ch)we
Ӌ(j)㷽A(ch)we=ăL(zhng)ă
䓽Ӌ(j)L(zhng)ȵĴ_
䓽L(zhng)=(gu)Dʾߴ磭o(h)ӿ+ɶˏ^L(zhng)+DעĴL(zhng)ȡ䓽бL(zhng)ֵ
ʽбo(h)Ӻ䓽^L(zhng)䓽L(zhng)䓽бL(zhng)ֵԼN䓽O(sh)Ӌ(j)L(zhng)ȵӋ(j)㹫ʽҊ£
1䓽űo(h)Ӻ
䓽űo(h)Ӻ(yng)O(sh)Ӌ(j)Ҫ(dng)O(sh)Ӌ(j)owҪr(sh)(yng)С䓽ֱ(yng)±Ҫ
2̎҃(ni)h(hun)ɹSa(chn)A(y)Ƙ(gu)(dng)ŏ(qing)ȵȼ(j)C20ʩ|(zh)пɿCr(sh)䱣o(h)ӺȿɰҎ(gu)p5mmA(y)Ƙ(gu)еA(y)(yng)䓽ıo(h)ӺȲ(yng)С15mm̎¶҃(ni)ߝȭh(hun)A(y)Ƙ(gu)(dng)ˮɰ{Ĩ|(zh)ɿCʩr(sh)䱣o(h)Ӻȿɰ҃(ni)h(hun)еĘ(gu)ıo(h)ӺȔ(sh)ֵ
3䓽(gu)䓽^ıo(h)Ӻһ10mmA(y)Ƶΰߵıo(h)Ӻȿɰ]
䓽^L(zhng)ָN(gu)̎˴˵䓽(yng)^̵L(zhng)
O(sh)Ӌ(j)D_Ҏ(gu)ģ䓽^L(zhng)ȰDӋ(j)(dng)O(sh)Ӌ(j)owҪr(sh)tY(ji)(gu)O(sh)Ӌ(j)Ҏ(gu)Ҏ(gu)Ӌ(j)
GB500102002Ҏ(gu)Ҏ(gu)
1䓽^L(zhng)
䓽^L(zhng)ȑ(yng)йʽӋ(j)㣺
ͨ䓽 La=a(fy / ft)d
A(y)(yng)䓽 La=a(fpy / ft)d
ʽ fy fpy ͨ䓽 A(y)(yng)䓽Ŀ(qing)O(sh)Ӌ(j)ֵ
ft SĿ(qing)O(sh)Ӌ(j)ֵ(dng)(qing)ȵȼ(j)C40r(sh)C40ȡֵ
d 䓽ֱ a 䓽ϵ(sh)䓽aȡ0.16䓽aȡ0.14
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