横向支撑刚度对轴心受压钢管稳定的影响

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THE INFLUENCE OF THE STIFFNESS OF CROSS DIRECTION SUPPORT ON THE STABILITY OF CENTRALLY COMPRESSED STEEL TUBE

1.
1 Department of Building Engineering,Zhejiang College of Construction Hangzhou 311231;
2.
2 Architecture and Civil Engineering Institute,Zhejiang University of Technology Hangzhou 310014

摘要: 在钢筋混凝土现浇结构的施工过程中, 扣件式钢管支撑架作为模板支架是当前应用最为广泛的一种模板支撑体系。当前这种支撑体系的竖向立杆均以单个步长作为杆的计算长度, 将横向钢管的弹性支撑作用基本简化为固定铰支约束作用, 这与扣件式钢管的工作特性有较大出入。为此用稳定理论分析了横向支撑作用对立杆稳定的影响。
- 扣件式钢管 /
- 计算长度 /
- 弹性支撑 /
- 稳定理论 /
- 轴心受压
Abstract: During the construction of the in-place structure of reinforced concrete, the tube-and-coupler formwork support is the most popular formwork support system. Currently, during the calculation of stability of the vertical pole of the support system, the effective length is the length of a segment. If the function of the cross direction support is seen as the function of a fasten restriction, there will be a great difference. It will be analyzed the influence of the cross direction support on the stability of the vertical pole based on the theory of stability.
- tube-coupler formwork /
- effective length /
- elastic support /
- theory of stability /
- centrally compressed