某洗煤厂栈桥支架加固对策研究

Research on supporting countermeasure of bracket in a coal washing plant

针对支架的破坏形态,分析了支架破坏的机理,并通过建模对支架进行了复核,结果表明附加的冻胀效应是导致支架破坏的主要原因,提出了外包钢的加固方案以提高柱的刚度和延性;同时采用加大截面法重新浇筑已破坏的梁以提高梁抵抗水平冻胀力的能力,最后通过多种形式的加固,使支架满足规范要求。

According to the damage form of the bracket, the paper analyzed the damage mechanism of the bracket, and the bracket was checked through establishing structure model, the results showed that additional frost heave effect is the main reason for bracket damage. Then covering steel was proposed to improve the stiffness and ductility of the columns, and repouring the damaged beam by enlarging section method in order to improve the capacity of the beam to resist horizontal frost heaving force. Through multiform reinforcement, the bracket can meet the regulation.