High and steep slope earthquake instability early warning method for under interaction of pier stud-pile-soil foundation and application of high and steep slope earthquake instability early warning method

Abstract

The invention discloses a high and steep slope earthquake instability early warning method under the interaction of a pier stud-pile-soil foundation and application of the high and steep slope earthquake instability early warning method. The high and steep slope earthquake instability early warning method comprises the steps that monitoring rods are arranged between a pier pile foundation and an anti-slide pile of a high and steep slope, from the position above the anti-slide pile to a slope top, from the position below the anti-slide pile to a slope toe and the like; earthquake horizontal acceleration and soil pressure of a soil body and a bending moment value of the monitoring rods are measured through horizontal accelerometers, soil pressure boxes and strain gauges on the monitoring rods; and then data are transmitted to a remote server through a data transmission unit, the stability condition of the high and steep slope is monitored in real time, and early warning is provided for management personnel through an earthquake occurrence alarm unit and a post-earthquake alarm unit. According to the invention, real-time post-earthquake monitoring is carried out on the complex geological condition under the interaction of the pier stud-pile-soil foundation of the high and steep slope, the cost is low, the service life is long, the operation is convenient, and the earthquake stability of the complex underground space of the high and steep slope can be effectively evaluated.

Description

technical field [0001] The invention relates to the field of early warning of earthquake instability of slope engineering, in particular to an early warning method of earthquake instability of high and steep slope under the interaction of pier column-pile-soil foundation and its application. Background technique [0002] In the past ten years, my country's high-speed railway has developed rapidly, and its network planning density has been continuously advancing to the west. It inevitably crosses complex terrain such as high and steep slopes in river valleys and geological fault zones. The post-earthquake stability assessment of the foundation structure is carried out. [0003] The existing stability analysis of high and steep slopes mainly focuses on the superstructure of bridges, and the analysis of the instability and damage of the pier column-pile-soil structure coupling system is relatively rare, let alone considering the near-field strong earthquake action on the valley ...

AI Technical Summary

Problems solved by technology

For example, "A High and Steep Slope Monitoring System and Monitoring Method Based on Radar and Infrared Rays" (Application Publication No.: CN 108548497 A) uses radar and infrared rays to monitor the slope displacement generated in the high and steep slope area to judge the stability of the slope , the early warning must be issued after the displacement occurs, and the prediction accuracy is not high, and the deformation value of each point inside the soil cannot be measured

Another example is the "Stability Research System of High and Steep Slopes Under Earthquake and Rainfall Actions" (Application Publication No.: CN113092046A), which evaluates the stability of high and steep slopes under the coupled effects of earthquake and rainfall through a scaled-down slope model shaking table test. However, the seismic response of complex geological conditions under the interaction of pier-pile-soil foundation is not considered, the applicability of the model is limited, and there is still a certain distance to apply it to site evaluation and instability warning

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