균열 폭 검토 계산기 (GB 50010)
Member type
Force type
Concrete grade
Rebar grade
Exposure class
Stress input
단면 너비 밀리미터(mm)
단면 높이 밀리미터(mm)
保护层厚度 밀리미터(mm)
철근 직경 밀리미터(mm)
철근 개수
Service moment Ms kN·m
计算裂缝宽度: - 밀리미터(mm)
Crack limit wlim: - 밀리미터(mm)
Limit utilization: -
Effective depth h0: - 밀리미터(mm)
Steel stress σs: - N/mm²
Tension steel As: - mm²
Effective tension Ate: - mm²
有效配筋率 ρte: -
不均匀系数 ψ: -
Force factor αcr: -
검증 결과: -
Notes: -
Crack Width Calculator (GB 50010)
Estimate maximum crack width wmax per GB 50010 §7.1.2 for beams/slabs and compare with exposure-class limits.
- Choose member, force type (αcr), concrete/steel grades and exposure class
- Beam: b×h, cover, bar dia & count; slab: thickness, dia & spacing (b=1000 mm)
- Enter service moment Ms or σs directly
- wmax = αcr·ψ·(σs/Es)·(1.9c + 0.08 deq/ρte)
- αcr: flexure 1.9 / axial tension 2.7 / eccentric compression 1.5
For learning and preliminary checks only—final design needs a licensed engineer. Runs locally in your browser.