| Assembly temporary bearing frame is a kind of structure which is able to quickly install for support and rapidly dismantle to move out of job location during construction. It is characterized by small limitation of site, convenience for both assembling & dismantling and high reuse rate. Recently this frame has been widely used in many occasions such as steel truss support, temporary stands, large-screen support and temporary stage. Bolt-scaffold and Disc-scaffold are two styles of component to form this kind of frame. This paper takes Bolt Scaffold as an example in order to analyze performance of assembly temporary bearing frame.With the finite element method this paper analyzes influence factors of Lateral rigidity including layout and spacing of fa(?)ade bracing, horizontal bracing and unusual arrangement of fa(?)ade bracing firstly, revealing the change discipline of lateral rigidity. Then, on this basis, this paper further researches on frame Stability capacity and its influence factors such as semi-rigid node, bracing spacing, base transom height, distance between top transom and the supported matter, structure height, longitudinal distance between adjacent standards, distance between adjacent transoms, horizontal load, in order to find out the law of stability capacity, guiding the design and construction. And also, simulate and analyze lattice column shape often used as bearing, providing references for designing stable and high-strength support.Assembly temporary bearing frame is a double-anti-lateral-force system. We cannot appoint its frame type. But, frame type determines Calculated-length-coefficient. To Achieve this goal this paper combines threshold rigidity of transom and brace, make certain the instability type under different standard spacing, different transom distance and different bracing spacing. Then, take use of standard buckling-equation under semi-rigid constraint to get standard Calculated-length-coefficient, which can be used conveniently during designing.
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