岩石锚梁构件力学性能试验研究

EXPERIMENTAL STUDY ON MECHANICAL PROPERTY OF ROCK-ANCHORED STEEL BEAM

通过极限荷载理论和强度理论分析,确定岩石锚梁构件的弹性极限荷载。对最小锚固深度进行限制。在此基础上,对岩石锚梁进行现场抗剪和拉拔试验研究,得到其相关力学性能。研究表明:锚梁构件的弹性极限荷载对初始缺陷比较敏感,施工中应严格控制;岩石锚梁的锚固深度在一定范围内对承载能力有较大影响,但是随着锚固深度的增加,岩石锚梁的承载能力逐渐趋于定值。

The result of an investigation into the behavior of rock-anchored steel beam was presented.The elastic ultimate load and the anchorage length of rock-anchored steel beam were obtained by theoretical analysis.Tests of six full scale specimens of rock-anchored steel beam under static loading were performed;the tests were described and the results were summarized.The results of analysis and tests show that the elastic ultimate load of rock-anchored steel beam is highly susceptible to the initial defects which must be avoided.The anchorage length of rock-anchored steel beam has impacted its elastic ultimate load.