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基于一类前排桩处于低位、后排桩处于高位的高低双排桩支护结构型式,建立了将桩视为弹性地基梁、桩底弹簧约束的力学模型,根据所建模型分段分析了挠曲线微分方程和内力方程。考虑槽仓运营状态下竖向承载力,建立力法方程并进行了边桩桩身截面内力求解。结合工程监测实例对某地运营煤矿槽仓高低双排桩的边桩进行了内力计算,与实测对比表明计算方法能满足工程设计,为类似支护结构提供了设计参数依据。
Based on a type of high and low double-row piles supporting structure in which the front piles are located at the low position and the rear piles are at the high position, a mechanical model is established to constrain the piles as the elastic foundation beam and the bottom spring constraint. According to the model, Flexibility differential equation and internal force equation. Taking into account the vertical bearing capacity of the silo operation state, the paper established the equation of force method and solved the internal force of the cross-section of pile. Combining with engineering monitoring example, internal force calculation is carried out for the side piles of high and low double-row piles operating in a coal mines in a certain place. Comparing with the measured results, the calculation method can meet the engineering design and provide the basis for design parameters for similar supporting structures.