Foundation pit overall early warning state evaluation method based on grey correlation

Abstract

The invention relates to an automatic monitoring technology, and provides a foundation pit overall early warning state evaluation method based on grey correlation. The evaluation method comprises the following steps: according to specific requirements of an entrusting party or a construction party and a related unit, formulating a monitoring scheme, and determining monitoring point positions; confirming the monitoring point positions on site, and installing monitoring sensors and wireless gateways; performing index association on the sensors at the monitoring point positions, and calculating importance degrees PXj of indexes X associated with the sensors; collecting sensor data, transmitting the sensor data to a management platform, and determining whether the sensors carry out early warning or not according to early warning threshold values of the sensors; performing early warning state scoring on the sensors carrying out the early warning, and calculating index importance degree probabilities to obtain structure state scores Ns; and performing overall early warning according to the foundation pit structure state scores. According to the invention, the foundation pit structure overall early warning method is characterized in that the state scoring is carried out according to rules through the importance degrees of the foundation pit early warning indexes, so that the structure state scores are obtained, and the foundation pit overall early warning is carried out according to the rules.

Description

technical field [0001] The invention relates to an automatic monitoring technology, in particular to an evaluation method for an overall early warning state of a foundation pit. Background technique [0002] With the rapid advancement of urbanization and the increasing number of urban engineering projects, the safety of foundation pit engineering has gradually attracted people's attention. Due to the complexity and uncertainty of foundation pit engineering, foundation pit monitoring has become an important means of occurrence. [0003] Traditional foundation pit engineering monitoring is generally carried out by manually operating instruments. The detection conditions are greatly affected by the environment and the timeliness is poor. The use of automated monitoring can effectively avoid the unfavorable environment of manual detection, and the high monitoring frequency can ensure real-time parameter warning and avoid Instantaneous collapse accidents can save labor costs, en...

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Problems solved by technology

Chinese patent document CN112686566A discloses a deep foundation pit early warning method, device, system, computer equipment, and storage medium. By comparing the target monitoring data corresponding to the foundation pit collection equipment with the preset alarm threshold, it is determined that the foundation pit collection equipment is in an alarm state. ; but the above-mentioned patent can only be used to determine the alarm state of a single acquisition device, and cannot determine the alarm state of the foundation pit as a whole

Chinese patent document CN110807576A discloses a safety evaluation method for ultra-deep soft soil foundation pits based on the fuzzy comprehensive evaluation method. A three-level fuzzy comprehensive evaluation method is used to establish a safety evaluation model for soft soil deep foundation pit engineering. Many parameters need to be calculated, and the applicability to a large number of projects needs to be discussed

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