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接触界面的相互作用是影响工程稳定的重要因素,基于接触面两侧介质的实际受力状态,采用一体两介质力学模型与两体两介质力学模型加以描述。通过一体和两体模型试件的轴压破坏试验,分析了两种模型的力学响应的差异,并认为:一体两介质力学模型在符合一定条件情况下可以转变为两体两介质力学模型。此外,还对影响两种力学模型性能的参数进行了分析。提出对一体两介质力学模型力学性能产生影响的参量是低强度介质与高强度介质的静载极限强度比k以及两种介质之间的黏结力c;对两体两介质力学模型力学性能产生影响的主要参量除了k之外,尚有两种介质的断裂韧度比ξ、体积比ω以及界面的粗糙程度。
The interaction of the contact interface is an important factor that affects the stability of the project. Based on the actual stress state of the media on both sides of the contact surface, the two-body mechanics model and the two-body two-agent mechanics model are used to describe the interaction. Through the test of axial compression failure of the integral and two-body model specimens, the difference of mechanical response between the two models is analyzed. It is concluded that the two-body mechanics model can be transformed into the two-body two-body mechanics model under certain conditions. In addition, the parameters that affect the performance of the two mechanical models are also analyzed. The parameters that affect the mechanical properties of the two-body mechanics model are put forward, which are the static ultimate strength ratio k of low-strength media and high-strength media and the cohesion c between the two media, which affect the mechanical properties of the two- The main parameters in addition to k, there are two kinds of medium fracture toughness ratio ξ, the volume ratio ω and the roughness of the interface.