CN110984255A

CN110984255A - Foundation pit support structure horizontal displacement monitoring and early warning system

Info

Publication number: CN110984255A
Application number: CN202010011917.7A
Authority: CN
Inventors: 姚帅; 郝玉双; 李博涛; 张欧娅
Original assignee: Henan University of Technology
Current assignee: Henan University of Technology
Priority date: 2020-01-07
Filing date: 2020-01-07
Publication date: 2020-04-10

Abstract

The invention relates to the technical field of foundation pit support structure deviation detection, in particular to a foundation pit support structure horizontal displacement monitoring and early warning system. The intelligent displacement monitoring device mainly comprises a shell, a solar cell panel, a solar cell, an infrared displacement monitor, an early warning information emitter, an intelligent early warning device and a buzzer alarm. The system shell is fixed on the top of the enclosure structure; the solar cell panel wrapping shell is arranged downwards in an inclined mode; the solar cell is arranged in the shell; the early warning information emitter and the intelligent early warning device are arranged on the side face of the shell in parallel; the buzzer alarm is arranged at the upper right part of the shell. The receiver of the infrared displacement monitor is arranged at the bottom of the shell, the transmitter which vertically corresponds to the receiver is arranged at the bottom of the enclosure structure, and the solar cell is connected with the infrared displacement monitor, the early warning information transmitter, the intelligent early warning device and the buzzer alarm through electric wires. The system is convenient to install and maintain, carries out real-time monitoring and timely early warning on the foundation pit, and is in butt joint with a local safety department to realize real-time information transmission.

Description

Foundation pit support structure horizontal displacement monitoring and early warning system

Technical Field

The invention relates to the technical field of monitoring of horizontal displacement of a foundation pit support structure, in particular to a monitoring and early warning system for the horizontal displacement of the foundation pit support structure.

Background

With the continuous promotion of the infrastructure of China, high-rise buildings and other underground engineering are increasingly common, various basic problems accompanying the common basic problems are more and more complicated, and the attention degree of the foundation pit enclosure structure is insufficient, so that accidents frequently occur, a large number of casualty accidents are caused, and the serious economic loss is caused. Among various conditions influencing the deformation of the foundation pit, the influence of the surrounding environment on the horizontal displacement of the side wall of the foundation pit support structure is particularly prominent. At present, displacement monitoring of a foundation pit mainly aims at accurate measurement of horizontal displacement, measuring equipment is huge, a system for monitoring displacement of a building enclosure at present also depends on an inclinometer, and once an inclined side pipe is damaged, the following problems are likely to occur: the equipment is difficult to replace when the equipment is in failure; once the device is fixed, the position of the device can not be changed, and the device has higher requirements on the installation position; the monitoring equipment monitors displacement only simply, has no functions of alarming and warning condition transmission, and lacks geological information transmission and integrated analysis of local construction conditions in various places.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a monitoring and early warning system for the horizontal displacement of a foundation pit support structure.

In order to achieve the purpose, the invention adopts the following technical scheme: a horizontal displacement monitoring and early warning system for a foundation pit support structure is designed, a system shell is fixed at the top of the support structure, a solar cell panel wraps the shell and is arranged downwards, and a solar cell is arranged in the shell; the early warning information emitter and the intelligent early warning device are arranged on the side face of the shell in parallel; the buzzer alarm is arranged at the upper right part of the shell. The receiver of the infrared displacement monitor is arranged at the bottom of the shell, the transmitter which vertically corresponds to the receiver is arranged at the bottom of the enclosure structure, and the solar cell is connected with the infrared displacement monitor, the early warning information transmitter, the intelligent early warning device and the buzzer alarm through electric wires.

The invention provides a monitoring and early warning system for horizontal displacement of a foundation pit support structure.

Preferably, the intelligent early warning device sends out electric signals and wireless signals to inform personnel of avoiding danger and transmitting early warning information based on the single chip microcomputer and the wireless communication module.

Preferably, the infrared displacement monitor comprises an upper receiver and a lower transmitter, the horizontal displacement of the foundation pit enclosure structure is converted into a receiving inclination angle of the infrared displacement monitor, and the arrangement interval is flexibly determined.

Preferably, the monitoring and early warning device for the horizontal displacement of the foundation pit support structure can be repeatedly arranged according to the length of the actual support structure, so that the monitoring range is enlarged.

The utility model provides a foundation ditch retaining structure horizontal displacement monitoring early warning system, beneficial effect lies in: the displacement monitoring and early warning system calculates and sets a receiving angle a in advance according to actual working conditions so as to judge the micro displacement of the foundation pit support structure; the device provides electric energy through the solar cell panel, an external power supply is omitted, construction hidden dangers are reduced, and the device is green and environment-friendly; the intelligent early warning device is characterized in that a single chip microcomputer in the intelligent early warning device is matched with a wireless communication module of an early warning information emitter to send an early warning signal, a wired signal can be directly transmitted to a buzzer alarm to carry out early warning, and a wireless signal is reminded through a short message to remind constructors and personnel around a site to evacuate the site before a foundation pit support structure is greatly deviated; and secondly, the offset information is transmitted to a safety quality inspection department and a local safety department in time, so that the collection and the arrangement of the local geological condition are facilitated. The device can monitor the foundation pit support structure when the foundation pit support structure has small deviation, alarm and message are timely sent to relevant departments to carry out inspection, and the occurrence of large casualty accidents caused by the deviation of the foundation pit support structure is effectively reduced.

Drawings

Fig. 1 is a schematic layout diagram of a foundation pit support structure horizontal displacement monitoring and early warning system provided by the invention.

Fig. 2 is a schematic structural diagram of a horizontal displacement early warning system of a foundation pit support structure provided by the invention.

Fig. 3 is a working flow chart of the monitoring and early warning system for horizontal displacement of the foundation pit support structure provided by the invention.

In the figure, a foundation pit section 1, an enclosure structure 2, a foundation pit enclosure structure horizontal displacement monitoring and early warning system 3, a solar cell panel 4, a solar cell 5, a buzzer alarm 6, a shell 7, an infrared displacement monitoring receiver 8, an early warning information transmitter 9, an intelligent early warning device 10, an infrared displacement monitoring transmitter 11 and a displacement detection system connecting wire 12 are arranged.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-2, the system is generally repeatedly arranged at intervals of several meters along the whole line of an enclosure structure 2 of a foundation pit section 1; two parts of each foundation pit horizontal displacement monitoring and early warning system 3 are vertically arranged up and down, are spaced by several meters and can be adjusted according to actual working conditions. The foundation pit support structure horizontal displacement alarm monitoring and early warning system 3 is characterized in that a shell 7 is fixed at the top of the support structure, a solar cell panel 4 wraps the shell 7 and is arranged downwards, and a solar cell 5 is arranged in the shell 7; the early warning information emitter 9 and the intelligent early warning device 10 are arranged on the side surface of the shell 7 in parallel; the buzzer alarm 6 is arranged at the upper right part of the shell 7. The infrared displacement monitor receiver 8 is arranged at the bottom of the shell 7, the infrared displacement monitoring transmitter 11 vertically corresponding to the infrared displacement monitor receiver is arranged at the lower part of the enclosure structure 2, and the solar cell 5 is connected with the infrared displacement monitoring receiver 8, the infrared displacement monitoring transmitter 11, the early warning information transmitter 9, the intelligent early warning device 10 and the buzzer alarm 6 through electric wires.

As shown in fig. 3, the system includes a monitoring module, a signal processing module and a signal output module, the monitoring module mainly uses the horizontal displacement of the foundation pit enclosure as a monitoring object to determine the safety condition of the foundation pit enclosure, the infrared displacement monitoring receiver receives the data and transmits the data to the signal processing module, the main control single chip microcomputer sorts and analyzes the offset angle data, whether the section data is within an allowable range is determined, and if the section data reaches an early warning value, the signal output module performs early warning through electric signals and wireless signals.

When the foundation pit support structure horizontal displacement monitoring and early warning system 3 works, an infrared displacement monitoring transmitter 11 and an infrared displacement monitoring receiver 8 carry out real-time monitoring on the horizontal displacement of the foundation pit support structure, displacement information is sent to an intelligent early warning device 10 by the infrared displacement monitoring receiver 8 through an electric signal, information received by the intelligent early warning device 10 is subjected to data analysis by a main control single chip, different horizontal displacement monitoring data are integrated and are compared with a set early warning value, if the displacement information exceeds the set early warning value, an alarm sound is sent by a buzzer alarm 6, corresponding early warning information is generated and is transmitted to workers and peripheral residents in the foundation pit in an information mode by a wireless communication module of an early warning information transmitter 9, and workers near the foundation pit support structure are reminded; the early warning information emitter 9 can also send the deviation angle information of the horizontal displacement of the foundation pit support structure and the geological information to a local safety department, and relevant departments specially acquire and analyze the information, comprehensively arrange and analyze the stress condition of the local geology, judge whether disasters such as ground subsidence possibly occur in the area, and perform prevention work on the disasters in advance.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A foundation pit support structure horizontal displacement monitoring and early warning system mainly comprises a shell, a solar cell panel, a solar cell, an infrared displacement monitor, an early warning information transmitter, an intelligent early warning device and a buzzing alarm; the system shell is fixed on the top of the enclosure structure, the solar cell panel wraps the shell and is arranged downwards, and the solar cell is arranged in the shell; the early warning information emitter and the intelligent early warning device are arranged on the side face of the shell in parallel; the buzzer alarm is arranged at the upper right part of the shell; the receiver of the infrared displacement monitor is arranged at the bottom of the shell, the transmitter which vertically corresponds to the receiver is arranged at the bottom of the enclosure structure, and the solar cell is connected with the infrared displacement monitor, the early warning information transmitter, the intelligent early warning device and the buzzer alarm through electric wires.

2. The foundation pit support structure horizontal displacement monitoring system based on claim 1, characterized in that intelligent early warning ware and early warning information transmitter are based on singlechip and wireless communication module, can send electrical signal and wireless signal and carry out early warning information transmission.

3. The foundation pit enclosure horizontal displacement monitoring system of claim 1, wherein the infrared displacement monitor comprises an upper transmitter and a lower receiver, the displacement monitor converting the foundation pit enclosure horizontal displacement to a received tilt angle; because the requirements of foundation pit support grades are different, the requirement of the horizontal displacement of the foundation pit with the first-level safety grade is b =0.0025H, wherein H is the depth of the foundation pit, the installation interval d is adjustable when the device is installed, and the receiving angle is obtained by calculating arctan 0.0025H/d.

4. The foundation pit support structure horizontal displacement monitoring system based on claim 1, characterized in that, the foundation pit support structure horizontal displacement monitoring early warning device can be repeatedly arranged according to the actual support structure length, and the monitoring range is enlarged.