预应力锚索锚固力损失与岩土体蠕变耦合效应研究

因预应力锚索锚固力损失而导致锚固失效的工程事故屡屡发生,锚索锚固力损失与岩土体蠕变之间存在复杂的耦合效应关系,通过理论分析和模型研究,在岩土体常用流变模型基础上建立了基于应变相等的耦合效应计算模型,并进行了模型验证。建立二者之间的耦合效应模型,确立二者之间的计算关系式,为预应力锚固工程的设计、施工、安全运行管理以及锚固力损失的控制与补偿技术提供理论基础和技术手段。

Study on coupling effect between anchorage force loss of prestressed anchor cable and creep of rock and soil mass

Engineering accidents often occur due to the anchorage force loss of prestressed anchor cables leading to anchorage failure. There is a complex coupling effect relationship between the anchorage force loss of anchor cables and the creep of rock and soil mass. Through theoretical analysis and model research, a coupling effect calculation model based on strain equality is established on the basis of the common rheological model of rock and soil mass, and the model is verified. The coupling effect model between the two is established, and the calculation relationship between the two is established, which provides the theoretical basis and technical means for the design, construction, safe operation management and the control and compensation technology of the anchoring force loss of the prestressed anchorage engineering.