During construction of high formwork support frame, collapse accident usually occurs because of cantilever length of adjustable jacking of steel tubular scaffold with couplers.
建筑模板工程施工中，特别是高大支模架体施工中，往往出现扣件式钢管架体顶部可调顶托的悬臂长度过长，导致架体坍塌事故。
During construction of high formwork support frame, collapse accident usually occurs because of cantilever length of adjustable jacking of steel tubular scaffold with couplers.
建筑模板工程施工中，特别是高大支模架体施工中，往往出现扣件式钢管架体顶部可调顶托的悬臂长度过长，导致架体坍塌事故。
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