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饱和粉细砂层变形对锚索预应力影响规律研究

Bo LIU,Gong ZHANG,Qingnan LIU,Mian HUANG,Yonghua JIANG,Haoliang ZHOU

Mechanics in Engineering（2014）

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Abstract
土层变形是造成预应力值波动甚至失效的重要原因.利用载荷位移传递函数,基于弹性理论建立了饱和粉细砂层变形过程中锚索受力模型,通过实例研究了锚索预应力值在施工过程中的变化规律及锚固体在地层变形中的受力特性,结果表明锚固体接触面剪切刚度,锚索倾斜角度以及锚固体直径都是影响锚固体内力及接触面剪切应力的重要因素,为类似的预应力锚索支护工程的设计施工提供经验.
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Key words
saturated sand stratum,pre-stressed anchor,anchor body,interface shear stiffness
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