压力型锚索动态响应的应力数值模拟分析

发布时间：2018-05-20 15:45

本文选题：压力型锚索 + 预应力　；参考：《地下空间与工程学报》2016年06期

【摘要】：在边坡抗震的实际案例中,压力型锚索展现了其优异的抗震性能,目前,压力型锚索抗震性能的研究成为了岩土工程的研究热点之一。为了深入研究压力型锚索锚固段在地震荷载作用下的动力响应,利用FLAC3D软件建立了一个岩体的力学参数随深度变化的压力型锚索体系模型。通过数值模拟方法,研究了锚索孔半径、沿注浆体轴向方向的位置、地震强度、初始张拉预应力大小对注浆体受到的压应力和接触面上剪应力时程分析的影响;研究结果表明,它们对注浆体受到的压应力时程曲线和接触面上的剪应力时程曲线影响很大。本研究具有较强的实用性,研究成果丰富了压力型锚索锚固机理内容,可为压力型锚索体系的抗震优化设计提供参考。
[Abstract]:In the actual case of slope aseismic, the pressure-type anchor cable shows its excellent seismic performance. At present, the research of pressure-type anchor cable seismic performance has become one of the research hot spots in geotechnical engineering. In order to study the dynamic response of anchoring section of pressure-type anchor cable under earthquake load, a model of pressure-type cable system with the variation of mechanical parameters of rock mass with depth was established by using FLAC3D software. The influence of the radius of anchor cable hole, the position along the axial direction of the grouting body, the earthquake intensity and the initial tensioning prestress on the compressive stress of the grouting body and the time history analysis of the shear stress on the contact surface are studied by means of numerical simulation. They have great influence on the compressive stress history curve of grouting body and the shear stress history curve on contact surface. The research results enrich the anchoring mechanism of pressure-type anchor cable and can be used as a reference for the seismic optimization design of pressure-type cable Anchorage system.
【作者单位】：武汉理工大学土木工程与建筑学院;武汉交通职业学院交通工程学院;武汉大学国际软件学院;
【基金】：国家自然科学基金(51374163) 湖北省自然科学基金(2014CKB499) 湖北省教育厅科学技术研究项目(B2015337)
【分类号】：TU476

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