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模板工程施工方案九 | 2011-1-19 3:24:00

现场安全资料实例（157）模板工程施工方案九

模板工程施工方案九

 

               模板工程施工方案

五、模板强度验算

5. 现浇钢筋混凝土楼板支撑系统验算

支撑系统的荷载。

(1)    钢模板及连接件钢楞自重为N1=750 N/m2

(2)    钢管支架自重为N2=400N/m2

(3)    楼板现浇混凝土以最厚部分厚度为180 mm计，得N3=25 kN/m3×0.18 m=4500 N/m2

(4)    施工荷载设定为N4=3000 N/m2

模板支架轴向荷载设计值N

钢管立于内、外钢楞十字交叉处，每区格尺寸为800 mm×800 mm，每区格面积为0.8 m×0.8 m=0.64m2

每根立杆承受的荷载为N=0.64 m×10980 N/m2=7027 N。

查表得Φ48mm×3.0mm钢管截面积A=424mm2,钢管回转半径为，其中d为钢管外径,d1为钢管内径

    其中d为钢管外径，d1为钢管内径。

按抗压强度计算，支柱的受压应力为

按稳定性计算支柱的受压应力为

    根据λ值查《钢结构设计规范》GBJ 17GBJ17-88附录（三）得：\

经验算，模板支撑的强度、刚度、稳定性均满足规定要求。

对3号楼结构转化层的框支架及楼板的支撑结构采用满堂脚手支撑，并布置双向水平支撑，上下两道、地面向上200 mm布置扫地杆。

 

 

 

 

By:苏州愚人 | 阅读全文 | 回复(10) | 引用通告 | 编辑
  • 标签：安全台账 
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    • Re:在漫画中识别身边的违章 | 2017-2-19 23:54:49
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    By:behjn(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复
    Re:在漫画中识别身边的违章 | 2016-10-23 13:27:49
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    Re:在漫画中识别身边的违章 | 2016-10-17 5:00:29
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    Re:在漫画中识别身边的违章 | 2016-10-12 12:17:19
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    Re:在漫画中识别身边的违章 | 2016-10-8 19:26:42
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    原创 | 2016-9-30 16:14:19
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