TY - JOUR A2 - Ibraim, Erdin AU - Li, Ning AU - Ma, Zhanguo AU - Gong, Peng AU - Qi, Fuzhou AU - Wang, tuau - Cheng，始兴PY - 2020 DA - 2020/06/17 TI -锚定的荷载传递机理仿真研究系统在软、硬复合岩层在拉伸加载条件下SP - 9097426六世- 2020 AB -软、硬复合岩层中经常遇到交通、岩土及地下工程。然而，目前的支护大多是为均质岩体设计的，忽略了软、硬复合岩层中不同的锚固效果。本文对软、硬复合岩层中全注浆锚杆的拔出特性进行了数值研究。通过室内试验，分别得到了锚固在软岩和硬岩中的锚杆-注浆界面的非线性粘结滑移关系。然后，将非线性粘结滑移关系带入数值模型。数值计算结果与试验结果和模型吻合较好。数值模拟模型考虑了岩性层序、层厚比和层数。在相同层数下，浅软深硬复合岩(SHCRS)比浅硬深软复合岩(HSCRS)具有更高的承载能力和变形抗力。随着软硬厚度比的增大，荷载-位移曲线的初始刚度和峰值荷载不断减小。 The load-displacement curve shows the same initial stiffness for different hard to soft thickness ratios in HSCRS. As the hard to soft thickness ratio increases, the load peak and the displacement at the peak load increase. Therefore, the closer the hard rock is to the loading end, the greater the initial stiffness of the load-displacement curve is. The greater the hard rock thickness, the larger the peak load. Under the same anchor length, the peak load and the displacement at the peak load decrease with the increase of layer numbers, but the reduction magnitude decreases. This paper leads to a better understanding of the load transfer mechanism for the anchoring system in soft and hard composite strata and provides a reference for scientific support design and evaluation method. SN - 1687-8434 UR - https://doi.org/10.1155/2020/9097426 DO - 10.1155/2020/9097426 JF - Advances in Materials Science and Engineering PB - Hindawi KW - ER -