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feng8777
- 技术员
- 4
- 12
- 2007-03-20
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1#
t
T
发表于 2007-11-20 20:24
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抗折强度Rf按下式计算:èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿øRf =èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø
| èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø 1.5FfLèY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø
| b3èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø
| 式中:Rf —抗折强度(Mpa);èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿øFf —折断时施加于棱柱体中部的荷载(N);èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿øL —支撑圆柱之间的距离(mm);èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿øb —棱柱体正方形截面的边长(mm)。èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿øèY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿øèY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø关于L和b是多少?èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿øèY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿øèY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø抗压强度Rc按下式计算èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø
Rc =èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø
| FcèY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø
| AèY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø
| èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø 式中:Rc—抗压强度(Mpa);èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø Fc—破坏时的最大荷载(N);èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø A—受压部分面积(mm2)。èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø 关于A是多少?èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø 是2.5还是1.6?èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø èY¶Û,ú{ÀpQbbs.3c3t.comY8°FÔ¿¿ø
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