A method for early warning of earthquake instability on high and steep slopes and its application

Abstract

The invention discloses an early warning method for earthquake instability of high and steep slopes under the interaction of pier column-pile-soil foundation and its application. The monitoring rods are arranged at the position from above to the top of the slope, below the anti-slide piles to the slope foot, etc., and the seismic horizontal acceleration, earth pressure and bending of the monitoring rod are measured through the horizontal accelerometer, earth pressure cell and strain gauge on the monitoring rod. Moment value, and then transmit the data to the remote server through the data transmission unit, monitor the stability of high and steep slopes in real time, and provide early warning for managers through the earthquake occurrence alarm unit and post-earthquake alarm unit. The present invention performs post-earthquake real-time monitoring of complex geological conditions under the interaction of pier columns, piles and soil foundations on high and steep slopes, has low cost, long service life and convenient operation, and can effectively evaluate the seismic stability of complex underground spaces on high and steep slopes sex.

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.: CN 113092046 A), 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, it does not consider the seismic response of complex geological conditions under the interaction of pier-pile-soil foundation. 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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