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λã > ɹ > 麣wģW(wng)ʩY(ji)(gu)|(zh)...麣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)LȳԆλԇӋ(j)㡣
2Ӌ(j)䓽rO(sh)Ӌ(j)Ҏ(gu)䓽LȵҎ(gu)LӋ(j)O(sh)Ӌ(j)δҎ(gu)LȵģѰ䓽ēp֮(ni)Ӌ(j)L䓽ͲDȽ^ԂӋ(j)
3ȏA(y)(yng)䓽(gu)γߴӋ(j)LA(y)(yng)䓽O(sh)Ӌ(j)DҎ(gu)A(y)(yng)䓽A(y)L^(q)eͬ^ͣքeҎ(gu)Ӌ(j)㣺
1)ͺϽ䓽ɶ˲ݗU^ߕrA(y)(yng)䓽A(y)LȜp0.35mݗUӋ(j)
2ͺϽ䓽һ˲û^ƬһݗU^ߕrA(y)(yng)䓽LȰA(y)LӋ(j)ݗUӋ(j)
3ͺϽ䓽һ˲û^Ƭһ˲Î͗l^ߕrA(y)(yng)䓽0. 15mɶ˲Î͗l^ߕrA(y)(yng)䓽0.3mӋ(j)
4ͺϽ䓽ú^rA(y)(yng)䓽L0. 35mӋ(j)
5ͺϽ䓽䓽gJM XM QM^߿L20mԃ(ni)rA(y)(yng)䓽LlmL20mϕrA(y)(yng)䓽L1.8mӋ(j)
6̼䓽zF^L20mԃ(ni)rA(y)(yng)䓽LlmL20mϕrA(y)(yng)䓽L18m.
7̼䓽zɶ˲煴^rA(y)(yng)䓽zL0. 35mӋ(j)F(xin)ʼnĹӋ(j)Ҏ(gu)tʽ
1F(xin)ܽY(ji)(gu)ļӋ(j)㷽Dʾߴm3Ӌ(j)(yng)۳Tڼ0.3m2ռweӋ(j)㹫ʽVLߡ0.3m2Te
ʽУL≦L(ni)L(ni)߾(c) ߡԻA(ch)ϱDҎ(gu)䓽ĩҪ1800 1350 900^rAֱD(yng)С䓽ֱd2.5ƽֱLȲС䓽ֱd3HRRB335HRB400䓽ď(ni)(yng)С䓽ֱd4^ƽֱLȑ(yng)O(sh)Ӌ(j)Ҫ 1800ÿ^L=6.25 d( d䓽ֱmm)
A(ch)Ӌ(j)Ҏ(gu)tʽ
≦lλA(ch)Ĺ≦lλA(ch)ľLȡlλA(ch)Ľe
(ni)lλA(ch)Ĺ(ni)lλA(ch)LLȡlλA(ch)Ľe
ע⣺LӋ(j)㑪(yng)ŗlλA(ch)ֱбӃLӋ(j)
2MûA(ch)Ӌ(j)㼰ʽ
MûA(ch)=MûA(ch)eMûA(ch)װ崹ֱֺȣϲ_we
3(d)A(ch) Ū(d)A(ch)cڻA(ch)ϱֽ磩
(1)λA(ch) V=L
(2)AλA(ch) V=ƸA(L)
(3)^FλA(ch) V=V1+V2=1/6 h1 AB+A+aB+b+ab+ABh2
V1A(ch)ϲ_weV2A(ch)²Lwweh1_߶ȣAB_߅Lab_߅Lh2A(ch)²Lw߶
Ӌ(j)Ҏ(gu)tʽ
š(gu)Ӌ(j)
٘(gu)we(gu)we+Rwe=HAB+0.03bn
ʽУH(gu)߶ AB(gu)L b(gu)cuҧ1/2 nR߅(sh)
٬F(xin)O(sh)Ӌ(j)DʾߴweӋ(j)㡣۳(gu)(ni)䓽A(y)Fռwe
wee*
ߣ
a (yng)ϱ(ǰϱ)һӘǰ±֮gĸ߶Ӌ(j)
b o(yng)ϱ(ǰϱ)ñ±֮gĸ߶Ӌ(j)
c (yng)ϱ픸߶Ӌ(j)
d A(y)ƻO(sh)Ӌ(j)DʾߴweӋ(j)۳(gu)(ni)䓽A(y)Fռweţȣ(yng)weӋ(j)
䓽Ҏ(gu)t
1һӋ(j)㹫ʽĽe*LȰO(sh)Ӌ(j)DʾߴweӋ(j)۳(gu)(ni)䓽A(y)Fռwe뉦(ni)^|we(ni)
2Lȡ
cBӕrL(c)cBӕrL(c)
3Ȧ
≦ȦĹ≦ȦľLȡȦĽe
(ni)ȦĹ(ni)ȦLLȡȦĽe 䓽ĹӋ(j)
1һF(xin)Ӌ(j)㷽F(xin)尴O(sh)Ӌ(j)DʾߴweӋ(j)۳(gu)(ni)䓽A(y)Fe0.3m2ԃ(ni)ĿռweӋ(j)㹫ʽVL匒
2ϵָcF(xin)һw乤weӋ(j)(c)we֮Ӌ(j)
3oϵֱָñ֧εİwecñweӋ(j)
4ƽָoֱɉ֧εİ乤匍(sh)weӋ(j)
3A(ch)we
Ӌ(j)㷽A(ch)we=ăLă
䓽Ӌ(j)LȵĴ_
䓽L=(gu)Dʾߴ磭o(h)ӿ+ɶˏ^L+DעĴL䓽бLֵ
ʽбo(h)Ӻ䓽^Lȡ䓽L䓽бLֵԼN䓽O(sh)Ӌ(j)LȵӋ(j)㹫ʽҊ£
1䓽űo(h)Ӻ
䓽űo(h)Ӻ(yng)O(sh)Ӌ(j)Ҫ(dng)O(sh)Ӌ(j)owҪr(yng)С䓽ֱ(yng)±Ҫ
2̎҃(ni)h(hun)ɹSa(chn)A(y)Ƙ(gu)(dng)ŏ(qing)ȵȼC20ʩ|(zh)пɿCr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䱣o(h)Ӻȿɰ҃(ni)h(hun)еĘ(gu)ıo(h)ӺȔ(sh)ֵá
3䓽(gu)䓽^ıo(h)Ӻһ10mmA(y)Ƶΰߵıo(h)Ӻȿɰ]
䓽^LȣָN(gu)̎˴˵䓽(yng)^̵L
O(sh)Ӌ(j)D_Ҏ(gu)䓽^LȰDӋ(j)㣻(dng)O(sh)Ӌ(j)owҪrtY(ji)(gu)O(sh)Ӌ(j)Ҏ(gu)Ҏ(gu)Ӌ(j)
GB500102002Ҏ(gu)Ҏ(gu)
1䓽^L
䓽^Lȑ(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)ȵȼC40rC40ȡֵ
d 䓽ֱ a 䓽ϵ(sh)䓽aȡ0.16䓽aȡ0.14
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