Quick braced system of foundation ditch that possesses alarming function
Technical Field
The invention relates to the technical field of foundation pit engineering, in particular to a foundation pit rapid supporting system with an alarm function.
Background
Along with the deeper excavation depth of foundation ditch construction, monitor the atress condition of foundation ditch in the work progress has become the essential important link of engineering construction. Through various test elements embedded in advance in the supporting structure and the foundation, the dynamic monitoring of the foundation pit excavation and the underground construction process is realized, and the method becomes an important means for realizing safe construction and informatization construction. However, the existing manual observation method or automatic monitoring device is low in accuracy, and dangerous information cannot be effectively and timely alarmed through the alarm device, so that the safety construction of the foundation pit is limited.
Disclosure of Invention
The invention aims to provide a foundation pit rapid supporting system with an alarm function, which is beneficial to rapidly supporting a foundation pit, monitoring deformation of the foundation pit and carrying out safety alarm in dangerous situations.
The technical scheme includes that the foundation pit rapid supporting system with the alarming function comprises a cross brace steel pipe, hydraulic telescopic devices, pressure sensors, a data acquisition terminal, a computer and an alarming device, wherein the hydraulic telescopic devices are respectively connected to two ends of the cross brace steel pipe, the hydraulic telescopic devices are respectively connected with steel sheet piles on two inner sides of a foundation pit so as to support the steel sheet piles, the pressure sensors are respectively arranged on the hydraulic telescopic devices so as to acquire stress data on the two inner sides of the foundation pit, the pressure sensors are electrically connected with the data acquisition terminal, the data acquisition terminal is in data communication with the computer through a communication network so as to upload stress data of the foundation pit to the computer, the computer is in communication connection with the alarming device, and the computer analyzes deformation conditions of the foundation pit and alarms through the alarming device when the deformation conditions of the foundation pit exceed an alarming threshold value.
Further, the pressure sensor is connected between the cross brace steel pipe and the hydraulic telescopic device through a flange structure, and the hydraulic telescopic device is connected with the steel sheet pile on the foundation pit through a flange.
Further, the data acquisition terminal is in data communication with the computer through a wireless communication network.
Further, the computer is arranged in the project command center, the alarm device comprises an alarm arranged on a safety helmet worn by constructors and a warning lamp connected to the computer, and the computer is in communication connection with the alarm through a wireless communication network.
Further, the foundation pit rapid supporting system comprises a plurality of transverse supporting steel pipes and corresponding hydraulic telescopic devices, wherein the transverse supporting steel pipes and the corresponding hydraulic telescopic devices are arranged at intervals along the length direction of the foundation pit, the hydraulic telescopic devices are respectively provided with a pressure sensor, the pressure sensors are respectively and electrically connected with data acquisition terminals, and the data acquisition terminals are in data communication with a computer through a wireless communication network.
Further, a plurality of warning thresholds are arranged on the computer, the computer calculates supporting deformation and foundation pit displacement according to foundation pit stress data uploaded by the data acquisition terminal of each area of the foundation pit, analyzes the change condition of the foundation pit displacement relative to the depth of the foundation pit, judges the danger level of each area of the foundation pit according to the condition that the foundation pit displacement exceeds different warning thresholds, and sends the danger level of each area of the foundation pit to the alarm on the safety helmet in the corresponding area, and each alarm gives an alarm of the corresponding danger level through acousto-optic change.
Compared with the prior art, the foundation pit rapid supporting system with the alarm function has the advantages that the foundation pit rapid supporting system can monitor stress of the foundation pit while rapidly supporting the foundation pit, then monitor and analyze deformation conditions of the foundation pit through stress data of the foundation pit, and carry out safety alarm when deformation is over-limit. Meanwhile, the alarm is arranged on each constructor to inform each constructor in real time, so that the safety of foundation pit construction is greatly improved, and the method has strong practicability and wide application prospect.
Drawings
Fig. 1 is a schematic view of an installation state of an embodiment of the present invention in a foundation pit.
Fig. 2 is a schematic diagram of the overall architecture of an embodiment of the present invention.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings and specific examples.
The invention provides a foundation pit rapid supporting system with an alarm function, which is shown in figures 1 and 2 and comprises a cross brace steel pipe 1, a hydraulic telescopic device 2, a pressure sensor 3, a data acquisition terminal 4, a computer 5 and an alarm device, wherein the two ends of the cross brace steel pipe 1 are respectively connected with the hydraulic telescopic device 2, the hydraulic telescopic device 2 is respectively connected with steel sheet piles at the two inner sides of a foundation pit so as to support the steel sheet piles, the pressure sensor 3 is respectively arranged on each hydraulic telescopic device 2 so as to acquire stress data at the two inner sides of the foundation pit, the pressure sensor 3 is electrically connected with the data acquisition terminal 4, the data acquisition terminal 4 is in data communication with the computer 5 through a communication network so as to upload the stress data of the foundation pit to the computer, the computer 5 is in communication connection with the alarm device, and the computer 5 analyzes deformation conditions of the foundation pit and alarms through the alarm device when the deformation conditions of the foundation pit exceed a threshold value.
In the embodiment, the pressure sensor 3 is connected between the cross brace steel pipe 1 and the hydraulic telescopic device 2 through a flange structure, and the pressure sensor 3 is made of high-strength low-alloy structural steel. The hydraulic telescopic device 2 is also connected with the steel sheet pile on the foundation pit through a flange. The data acquisition terminal 4 is in data communication with the computer 5 through a wireless communication network. The computer 5 is arranged in the project command center, the alarm device comprises an alarm 6 arranged on a safety helmet worn by constructors and a warning lamp 7 connected to the computer, and the computer 5 is in communication connection with the alarm 6 through a wireless communication network.
In order to safely monitor the whole foundation pit, the quick foundation pit supporting system comprises a plurality of transverse supporting steel pipes 1 and corresponding hydraulic telescopic devices 2 which are arranged at intervals along the length direction of the foundation pit, wherein each hydraulic telescopic device 2 is provided with a pressure sensor 3, each pressure sensor 3 is electrically connected with a data acquisition terminal 4, and each data acquisition terminal 4 is in data communication with a computer 5 through a wireless communication network.
In order to ensure the safety of constructors in the foundation pit, a plurality of warning thresholds are arranged on the computer 5, the computer 5 calculates supporting deformation and foundation pit displacement according to the foundation pit stress data uploaded by the data acquisition terminal 4 of each area of the foundation pit, analyzes the change condition of the foundation pit displacement relative to the depth of the foundation pit, judges the danger level of each area of the foundation pit according to the condition that the foundation pit displacement exceeds different warning thresholds, the computer 5 sends the danger level of each area of the foundation pit to the alarm 6 on the safety helmet in the corresponding area, and each alarm 6 gives an alarm of the corresponding danger level through acousto-optic change, so that the danger area and the danger level are displayed for constructors, and the constructors can withdraw conveniently.
In this embodiment, three warning thresholds are set on the computer 5, when the first warning threshold is not exceeded, the alarm 6 on the helmet worn by the constructor and the warning lamp 7 of the project command center are displayed in green, when the first warning threshold is exceeded, the alarm 6 on the helmet worn by the constructor and the warning lamp 7 of the project command center are displayed in yellow to warn project manager to immediately organize personnel to find out cracks around the foundation pit and changes thereof, when the second warning threshold is exceeded, the alarm 6 on the helmet worn by the constructor and the warning lamp 7 of the project command center are displayed in red to warn the project manager to immediately organize personnel to clear up the pile load in 8 meters at the base tank top, and when the third warning threshold is exceeded, the alarm 6 on the helmet worn by the constructor is displayed in orange to warn the constructor to rapidly leave the scene through the safety channel, and meanwhile the warning lamp 7 of the project command center is displayed in orange to warn the constructor to immediately start the emergency project manager.
The above is a preferred embodiment of the present invention, and all changes made according to the technical solution of the present invention belong to the protection scope of the present invention when the generated functional effects do not exceed the scope of the technical solution of the present invention.