设计双筋矩形截面梁,当As和As'均未知时,使用钢量接近最少的方法是:()A、取ξ=ξbB、取As=As'C、使x=2as'D、取ρ=0.8%~1.5%

设计双筋矩形截面梁,当As和As'均未知时,使用钢量接近最少的方法是:()

  • A、取ξ=ξb
  • B、取As=As
  • C、使x=2as
  • D、取ρ=0.8%~1.5%

相关考题:

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