建筑施工临时支撑结构分类及稳定性分析.

In this paper the temporary support structures in construction are classified into frame support structures, truss support structures，hybrid support structures and special support structures based on their assembly patterns and mechanical behaviors. Frame support structures are classified into structures with and without X-bracing. The units for each type of structure are determined. The simplified calculation models which consider the rotational stiffness of joints and the continuity of horizontal tubes are put forward according to analysis of overall three-dimensional structures. Corresponding stability equations are derived. The calculation formulas for effective length factors of frame support structures are obtained. Some correction coefficients which consider the influence of the height of bottom transom, the length of U-head, the height of structures, etc. are proposed. The method for overall and local stability calculation of truss support structures is given. A unified theory for stability analysis of temporary support structures assembled with tubes and couplers, buckle bowls, disk locks or other fittings is established. The research contributes to the work on 'Technical code for temporary support structures in construction' (JGJ 300--2013). [ABSTRACT FROM AUTHOR]