地震激励作用下锚固系统研究现状

地震激励作用下,柔性的锚杆支护体系与刚性的滑体合而为一,刚柔并济,协调系统位移与应力,主动抗震抗滑。基于以上优势,锚固边坡在高烈度地区广泛应用,其动力稳定性也成为近年来岩土工程领域研究的热点。通过分析锚固边坡的浅表动力效应、锚固体的动力响应、锚固体的破坏模式、锚固体的抗震机理及设计方法等4个方面发现,浅表动力效应研究和锚固体的动力响应分析研究成果相对较多、较成熟,但大都局限于位移、加速度、应力等单因素的分析,并没有具体到整个系统的动力响应过程;指出今后的研究方向更应趋向于整个锚固系统的动力响应过程、抗震机理及抗震设计理论,才能更好地为工程服务。

Research Status of Anchorage System Under Seismic Excitation

Under the action of earthquake excitation, the flexible bolt support system and the rigid sliding body are integrated into one, combining the rigid and flexible, coordinating the displacement and stress of the system, and actively resisting the earthquake and sliding. Based on the above advantages, anchored slope is widely used in highintensity areas, and its dynamic stability has become a hot topic in the field of geotechnical engineering in recent years.The research on the anchoring slope under the action of earthquake excitation mainly focuses on four aspects: shallow dynamic effect research, dynamic response analysis of anchor solids, failure mode research of anchor solids, antiseismic mechanism and design method of anchor solids. Relatively speaking, researches on the superficial dynamic effect and the dynamic response analysis of anchor solids have achieved more and more mature results, but most of them are limited to the analysis and research on single factors such as displacement, acceleration and stress, rather than the dynamic response process of the whole system. The future research direction should be more inclined to the dynamic response process, seismic mechanism and seismic design theory of the whole anchorage system, so as to better serve the engineering.