135度弯钩
- 01
Clarifying 135-degree vs 180-degree stirrup hooks: the 180-degree hook belongs only to plain longitudinal tension bars (straight leg >= 3d); stirrup hooks are >= 90 degrees or >= 135 degrees by member type (no 180-degree tier), with bend inner-diameter calibers for load-bar hooks/bends
Current codes have no 180-degree tier for stirrup hooks: for general str…
GB 50204-2015《混凝土结构工程施工质量验收规范》第5.3.2条、第5.3.3条GB 50666-2011《混凝土结构工程施工规范》第5.3.4条、第5.3.5条、第5.3.6条DB11/T 1832.3-2021《建筑工程施工工艺规程 第3部分：混凝土结构工程》第12.4.7条2026-09-12 - 02
Bend angle and straight length of stirrup and tie-bar end hooks (general members >=90 deg/>=5d; seismic members >=135 deg/>=10d; GB 50666-2011 cl. 5.3.6 and GB 50204-2015 cl. 5.3.3)
Stirrup hooks are controlled on two lines by member class: general struc…
GB 50666-2011《混凝土结构工程施工规范》第 5.3.6 条GB 50204-2015《混凝土结构工程施工质量验收规范》第 5.3.3 条2026-08-30