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基于锚固体与孔壁界面的剪切滑移本构模型,采用荷载传递函数法,建立弹塑性理论空间模型,对预应力锚杆锚固段剪应力沿长度方向的分布规律进行理论研究,得到不同位置处的界面剪应力满足不同剪应力分布规律,界面剪应力主要分布在锚固短端部4.5 m左右范围内等结论,为预应力锚杆设计提供了理论依据。
Based on the shear-slip constitutive model of the interface between anchor and hole wall, a load-transfer function method was used to establish the elasto-plastic theoretical space model to study the distribution of shear stress along the length of anchor section in prestressed anchors. The interfacial shear stress at different positions can meet the distribution of different shear stresses. The interfacial shear stress is mainly distributed in the range of about 4.5 m at the short end of the anchorage, which provides a theoretical basis for the design of prestressed anchor.