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先张法的第一批预应力损失σlI,和第二批预应力损失σlII为()。 A.σlI=σl1+



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ṹA
ŷԤӦĵһ͵ڶԤӦʧֱΪ: A. ?lI ? ?l1 ? ?l 3 ? ?l 4 , ?lII ? ?l 5 ? ?l 6 C. ? lI ? ? l1 ? ? l...
ֽھ±εʮԤӦ
15. һ͵ڶԤӦʧ 1 6...ê߱ʧ l1 = a * E s / l. ʽ l...con (B) con- LI (C) con- LII 36...
ֽṹ
ŷԤӦֽһʧ lI =___;ŷԤӦ ֽڶʧ lII =___ 02.ӰϽṹݿռնȵҪ______ ...
ԤӦ
2ԤӦֽɲΪֱ߻,...1.Ħʧ l1 :ԭ:ԤӦ,...lI ʹúؽ׶ (2׶) ʧ?lII ŷ...
ṹϰ⼰
ѡ: (ÿС 1 , 10 )1. Ʒĵģָ( A )...6.ŷ LI LII ֱΪ( A ) A.LI=L1 +L2+L3+...
ԤӦʴ
ԤѹǰΪһ, lI ԤѹΪڶ,Ϊ lII :ŷ lI = l1 + l 3 + l 4 lI = l1 ...
2015괺ĩԤӦԾ(A)
4:1)ԤӦܵڼĦӦʧ l1; 2)ê߱Ρֽ...lI ê̺ʧ(ڶ) ? lII ŷ ŷ ? l 2 ? ...
ھ½ṹԭ
һԤӦʧ,ԤӦֽӦΪ( con- ...ԤѹӦ , ڶʧ 1II = 15 =...ԤӦʧ = lI + lII (...
ԤӦṹϰ˼
ԤѹǰΪһ, lI ԤѹΪڶ,Ϊ lII :ŷ ŷ lI = l1 + l 3 + l 4 lI = ...
8ԤӦļ
ʧ l = 0.25 con,øԤӦ...ê߱ʧ:֪:a = 2 mm, l1 = 15... lII = l5 = 61, 'lII = 'l5 = ...
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