CN-122013824-A - Suction type foundation soil plug state monitoring system and recyclable monitoring method

CN122013824ACN 122013824 ACN122013824 ACN 122013824ACN-122013824-A

Abstract

The invention discloses a suction type foundation soil plug state monitoring system and a recyclable monitoring method, wherein the system comprises a pressure stabilizing barrel and a guide pipe, one end of the top of the pressure stabilizing barrel is communicated with a suction type foundation through the guide pipe, a soil plug is arranged in the suction type foundation, the top of the suction type foundation is connected with a sonar scanning system through the guide pipe, the sonar scanning system comprises a retractable sonar installation mechanism and a sonar assembly arranged on the sonar installation mechanism, the other end of the pressure stabilizing barrel is connected with a signal processor through a cable, and the signal processor is in communication connection with a computer. According to the invention, the umbrella body is unfolded to drive the sonar body to scan the annular section of the soil plug, the three-dimensional form of the soil plug is reconstructed, the single-point measurement limitation is overcome, and after the suction type foundation is penetrated, the umbrella body is folded and the monitoring equipment is recovered, so that the recycling is realized, and the engineering cost is reduced.

Inventors

TU WENBO
PENG YILONG
Ji Qiuwei
HU BIN
GU XIAOQIANG
ZHENG MINGXIN
LIU HONGYANG
CHEN YONGQING
YE KAI
XING JINCHAO

Assignees

华东交通大学

Dates

Publication Date: 20260512
Application Date: 20260317

Claims (10)

1. A suction type foundation soil plug state monitoring system is characterized by comprising a pressure stabilizing barrel and a guide pipe, wherein one end of the top of the pressure stabilizing barrel is communicated with a suction type foundation through the guide pipe, a soil plug is arranged in the suction type foundation, the top of the suction type foundation is connected with a sonar scanning system through the guide pipe, the sonar scanning system comprises a retractable sonar installation mechanism and a sonar assembly arranged on the sonar installation mechanism, the other end of the pressure stabilizing barrel is connected with a signal processor through a cable, and the signal processor is connected with a computer in a communication mode.
2. The suction type foundation soil plug state monitoring system according to claim 1, wherein a model box is arranged at the bottom of the suction type foundation, a reaction frame is fixedly connected to the side wall of the model box, and a hoisting assembly is fixedly connected to the middle part of the reaction frame; the top of suction formula basis sets up two rings, and hoist and mount subassembly on the reaction frame passes through wire rope and connects rings, disposes the position monitoring piece in the hoist and mount subassembly for monitor the state of suction formula basis, be equipped with the suction hole that supplies the pipe to get into at suction formula basis top, be equipped with the check valve gap in the suction hole and do sealed processing.
3. The suction type foundation soil plug state monitoring system according to claim 2, wherein the retractable sonar installation mechanism is of an umbrella structure and comprises a sliding rod; The upper end of the sliding rod is connected with the magnetorheological fluid through a connector, and the connection part of the connector and the magnetorheological fluid is reinforced; An electric cylinder is arranged in the sliding rod, one end of the electric cylinder is provided with a telescopic rod, sliding cylinders are fixedly connected to the sliding rod and the telescopic rod, two ends of the sliding rod are provided with telescopic light umbrella ribs, and one end of each telescopic light umbrella rib is hinged with the sliding cylinder on the sliding rod; the sliding cylinder hinge on the telescopic rod is connected with a connecting rod, and the other end of the connecting rod is hinged with the other end of the telescopic light umbrella rib.
4. The suction type foundation soil plug state monitoring system according to claim 3, wherein the telescopic rod and one ends of the telescopic light umbrella ribs at two ends are provided with sonar components.
5. The suction type foundation soil plug state monitoring system according to claim 4, wherein the sonar assembly comprises a sonar body, a connecting platform and mounting holes, wherein the connecting platform is connected to one ends of telescopic rods and telescopic light umbrella ribs at two ends, the mounting holes are formed in the connecting platform, a plug pin is arranged at one end of the sonar body and is used for being inserted into the mounting holes of the connecting platform to fix the sonar body and the connecting platform, an angle sensor is arranged in the connecting platform and used for feeding back the horizontal posture of the sonar scanning system in real time, and the sonar body adopts a multi-beam sonar body.
6. The suction type foundation soil plug state monitoring system according to claim 5, wherein a connecting plate is arranged on the inner side of the upper portion of the sliding rod, one end of the electric cylinder is connected with the connecting plate, an inner through hole is formed in the connecting plate, an umbrella rib hole is formed in the outer wall of one end of the telescopic light umbrella rib, and a wire outlet groove is formed in the outer wall of the upper portion of the sliding rod.
7. The suction type foundation soil plug state monitoring system according to claim 6, wherein a conduit interface, a negative pressure interface and a cable interface are arranged at the top of the pressure stabilizing barrel, a pressure gauge of the pressure stabilizing barrel is arranged at the middle part of the top of the pressure stabilizing barrel, and a cable winding and unwinding electric box is arranged in the pressure stabilizing barrel; one end of the cable of the signal processor is used for connecting the cable winding and unwinding the electric box through the cable interface; the cable at the other end of the cable receiving and releasing electric box is used for penetrating through the inscribed catheter, the magnetorheological fluid, the sliding rod and the telescopic light umbrella rib to be connected with the sonar component; The negative pressure pump is connected with the negative pressure interface through a negative pressure connecting pipeline, and is provided with a negative pressure pump pressure gauge; wherein, the conduit interface, the negative pressure interface and the cable interface are all configured with an electromagnetic valve and a metal gland.
8. The system of claim 7, wherein the conduit comprises an inner conduit and an outer conduit, the inner conduit is nested inside the outer conduit, one ends of the inner conduit and the outer conduit are inserted into the suction hole, and the other ends of the inner conduit and the outer conduit are inserted into the conduit interface.
9. A suction type foundation soil plug state monitoring method, which is applied to the suction type foundation soil plug state monitoring system of any one of claims 1-8, and comprises the following steps: S1, hoisting a suction type foundation to a designated position of a model box, placing a voltage stabilizing barrel on a working platform, inserting a cable of a signal processor into the voltage stabilizing barrel to be connected with a cable winding and unwinding electric box, and connecting the cable at the other end of the cable winding and unwinding electric box with a sonar body on the umbrella body structure through a contracted umbrella body structure; S2, enabling the contracted umbrella body structure of the connecting cable to penetrate through the guide tube, enabling the guide tube penetrating through the umbrella body structure to be inserted into the suction type foundation and stay above the suction type foundation, and enabling the other end of the guide tube to be inserted into the top of the cable winding and unwinding electric box from the guide tube connector; Step S3, driving the umbrella body structure to open through a computer, adjusting the open umbrella body structure posture in real time through an angle sensor while opening, and testing the soil plug through the sonar body after posture adjustment to obtain test data of the sonar body, wherein when the test data of the sonar body are stable, normal operation is represented; s4, during normal operation, pumping gas of the suction type foundation through a negative pressure pump to form a negative pressure cavity, and enabling the suction type foundation to start to penetrate into a soil plug of the model box by utilizing the difference of internal pressure and external pressure; S5, acquiring data of the soil plug in real time through the sonar body, synchronously transmitting the acquired data of the soil plug to a computer, and processing the acquired data of the soil plug through the computer to reconstruct a three-dimensional shape of the surface of the soil plug; S6, when the soil plug is close to the suction type foundation top plate, the umbrella body structure is driven to shrink by a computer, the cable winding and unwinding electric box winding and unwinding cable is started, the umbrella body structure and the sonar body in the shrinking state are driven to synchronously move upwards by the cable, and the soil plug is stopped at a safety detection position above the inside of the suction type foundation; And S7, at the upper safety detection position, driving the umbrella body structure to open through a computer, adjusting the structural posture of the opened umbrella body in real time through an angle sensor, detecting the close soil plug through the sonar body after the posture is adjusted, synchronously transmitting detected data to the computer, and processing the detected data through the computer to reconstruct the three-dimensional form of the complete soil plug.
10. A suction type foundation soil plug recycling method, which is applied to the suction type foundation soil plug state monitoring system of any one of claims 1-8, and comprises the following steps: S1, after a suction type foundation penetrates into a soil plug to a depth, closing a negative pressure pump, and driving an umbrella body structure to shrink through a computer; The electric cylinder is driven reversely by the computer to drive the telescopic rod and the sliding cylinder on the telescopic rod to move upwards together, one end of the connecting rod is pulled upwards, the other end of the connecting rod drives one end of the telescopic light umbrella rib to move downwards, when the telescopic light umbrella ribs at two ends are gradually folded inwards, the whole umbrella body structure is contracted to the minimum volume, the electric cylinder is stopped, and the position of the telescopic light umbrella rib is locked; And S2, winding the cable through the cable winding and unwinding electric box, and driving the umbrella body structure in the furled state to sequentially pass through the suction hole of the suction type foundation and the inner connecting pipe to enter the pressure stabilizing barrel through the retracted cable.

Description

Suction type foundation soil plug state monitoring system and recyclable monitoring method Technical Field The invention belongs to the technical field of civil engineering foundation monitoring, and particularly relates to a suction type foundation soil plug state monitoring system and a recyclable monitoring method. Background The suction type foundation is widely applied to ocean engineering foundation forms such as ocean platforms, wind power foundations and the like, and the construction quality directly influences the stability of the integral structure. The phenomenon of the soil plug is a key characteristic in the penetration process of the suction type foundation, and the state and the morphological distribution of the soil plug have important influences on the bearing performance, the penetration resistance and the final stability of the foundation, so that the soil plug needs to be accurately monitored. The existing soil plug state measurement technology has the defects that firstly, local data can be obtained only by adopting single-point sensor measurement, three-dimensional form distribution of a soil plug cannot be reflected, and construction quality is difficult to evaluate comprehensively, secondly, the cost of equipment such as a distributed optical fiber sensor, a laser sensor, an industrial camera and a structured light projector is high, the sensor is required to be built in a foundation, and cannot be recovered after construction, so that engineering cost is greatly increased, thirdly, sensor wiring is required to be additionally provided with holes on a suction type foundation, tightness of the foundation is damaged, negative pressure filling effect is possibly affected, and meanwhile, leakage risk is increased. Therefore, there is a need for more efficient suction-type foundation soil plug condition monitoring systems and methods. Disclosure of Invention In order to solve the problems in the related art, the application provides a suction type foundation soil plug state monitoring system and a recyclable monitoring method, and solves the problems mentioned in the background art. The suction type foundation soil plug state monitoring system comprises a pressure stabilizing barrel and a guide pipe, wherein one end of the top of the pressure stabilizing barrel is communicated with a suction type foundation through the guide pipe, a soil plug is arranged in the suction type foundation, the top of the suction type foundation is connected with a sonar scanning system through the guide pipe, the sonar scanning system comprises a retractable sonar installation mechanism and a sonar assembly arranged on the sonar installation mechanism, and the other end of the pressure stabilizing barrel is connected with a signal processor through a cable which is in communication connection with a computer. Further, a model box is arranged at the bottom of the suction type foundation, a reaction frame is fixedly connected to the side wall of the model box, and a hoisting assembly is fixedly connected to the middle part of the reaction frame; the top of suction formula basis sets up two rings, and hoist and mount subassembly on the reaction frame passes through wire rope and connects rings, disposes the position monitoring piece in the hoist and mount subassembly for monitor the state of suction formula basis, be equipped with the suction hole that supplies the pipe to get into at suction formula basis top, be equipped with the check valve gap in the suction hole and do sealed processing. Further, the retractable sonar installation mechanism is of an umbrella body structure and comprises a sliding rod; The upper end of the sliding rod is connected with the magnetorheological fluid through a connector, and the connection part of the connector and the magnetorheological fluid is reinforced; An electric cylinder is arranged in the sliding rod, one end of the electric cylinder is provided with a telescopic rod, sliding cylinders are fixedly connected to the sliding rod and the telescopic rod, two ends of the sliding rod are provided with telescopic light umbrella ribs, and one end of each telescopic light umbrella rib is hinged with the sliding cylinder on the sliding rod; the sliding cylinder hinge on the telescopic rod is connected with a connecting rod, and the other end of the connecting rod is hinged with the other end of the telescopic light umbrella rib. Further, telescopic link, the one end of the telescopic light rib at both ends all are equipped with the sonar subassembly. Further, the sonar assembly comprises a sonar body, a connecting platform and mounting holes, wherein the connecting platform is connected to one ends of the telescopic rods and the telescopic light umbrella ribs at two ends, the mounting holes are formed in the connecting platform, a plug pin is arranged at one end of the sonar body and used for being inserted into the mounting holes of the connecting platform, the sonar body and t