Diagnosis and repair device and method for assembly type wharf bed scouring

Abstract

The application discloses a diagnosis and repair device and method for the hollowing of an assembled wharf bed, and belongs to the technical field of wharf bed repair. The diagnosis and repair method for the hollowing of the assembled wharf bed comprises the following steps: S1, obtaining initial data of a stress sensor after a caisson contacts a bed, and storing the initial data as a reference value in a control center; S2, obtaining real-time data of the stress sensor, analyzing a pressure change trend, and presetting a threshold range according to the pressure change trend; S3, obtaining the position of an abnormal stress sensor, analyzing a bed pressure change trend, and obtaining the range of a bed hollowing area; S4, obtaining the grouting amount of underwater non-segregation concrete and the number of baffle units; and S5, splicing the baffle units, injecting the underwater non-segregation concrete into a repair cavity, and continuing until the abnormal data is restored to the preset threshold range. The application realizes the timely discovery and repair of bed problems, ensures the structural stability and safety of the assembled wharf, and improves the efficiency and quality of the repair work.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wharf bed repair, in particular to a diagnosis and repair device and method for the hollowing of an assembled wharf bed. BACKGROUND

[0002] During long-term operation, especially in harsh and complex hydrological environments, the riprap bed of a wharf is easily affected by factors such as water flow scouring, wave impact, and tugboat operation, resulting in the hollowing of the bed. The hollowing of the bed not only affects the safety, applicability, and durability of the wharf, but also causes problems such as cracks, structural damage, uneven settlement, and ultimately can lead to serious damage or even failure of the wharf structure.

[0003] Currently, the post-repair method is usually used to address the problem of bed hollowing, such as detecting damage through underwater exploration by divers, underwater video recording, and other means, and repairing by adding riprap, raising concrete, and using bagged concrete. However, these methods have certain limitations. On the one hand, due to the detection lag, problems can only be discovered when damage reaches a certain level and obvious signs appear, at which point significant damage has already been caused. On the other hand, in complex underwater environments, repair work is difficult, costly, and inefficient. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the prior art. To this end, the present application proposes a diagnosis and repair device and method for the hollowing of an assembled wharf bed, which can identify signs of bed hollowing at an early stage, thereby achieving early warning and rapid repair and ensuring the safety of the wharf structure.

[0005] According to the diagnosis and repair device for the hollowing of an assembled wharf bed of the first aspect of the present application, the device comprises: a plurality of monitoring mechanisms, each of which is arranged in the assembled wharf, and each of which is uniformly distributed along the length direction of the assembled wharf; the monitoring mechanisms are used to monitor the stress data between different positions on the assembled wharf and the bed; a control center, which is electrically connected with the monitoring mechanisms, is used to record and analyze the data obtained by the monitoring mechanisms; a combined baffle, which is arranged on the caisson corresponding to the monitoring mechanism with abnormal data, is detachably connected with the caisson of the assembled wharf and the bed, is arranged across the caisson and the bed, and forms a repair cavity together with the caisson and the bed; and a plurality of grouting mechanisms, which are detachably arranged on the breast wall of the assembled wharf, are uniformly distributed along the length direction of the assembled wharf, are detachably connected with the combined baffle, are connected with the combined baffle to make the grouting mechanisms communicate with the repair cavity, and are used to fill and reinforce the hollowed bed at the bottom of the assembled wharf through grouting.

[0006] The diagnosis and repair device for the hollowing of the prefabricated wharf bed has at least the following beneficial effects: the pressure change of the bed is monitored in real time by the plurality of monitoring mechanisms, the grouting process is rapidly started by using the grouting mechanism after the specific hollowing position is accurately located, the bed hollowing position is accurately repaired, and the bed integrity is restored, so that the abnormal condition can be identified at the initial stage of the hollowing, timely discovery and repair of the bed problem are realized, the structural stability and safety of the prefabricated wharf are ensured, the diving operation is reduced, the risk of the underwater operation is reduced, the efficiency and quality of the repair work are improved, the frequency of large-scale maintenance of the wharf is reduced through the continuous monitoring of the health condition of the bed, the maintenance cost is reduced, and the digital operation and maintenance level of the wharf is improved.

[0007] According to some embodiments of the present application, a solar power supply system is further included, the solar power supply system is arranged on the prefabricated wharf, all the monitoring mechanisms are electrically connected with the solar power supply system, the solar power supply system is electrically connected with the control center, and the solar power supply system is used to provide power for the monitoring mechanisms and the control center.

[0008] According to some embodiments of the present application, the monitoring mechanism comprises: a protection pipe, the protection pipe is embedded in the caisson, and the protection pipe is located at the sea side of the caisson; a stress sensor, the stress sensor is arranged in the protection pipe, and the stress sensor is located at the bottom of the caisson; the stress sensor is used to monitor the pressure change between the caisson and the bed; a shielded wire, the shielded wire is arranged in the protection pipe, the shielded wire is electrically connected with the stress sensor, the shielded wire is used to transmit signals and reduce the interference of external electromagnetic fields on the stress sensor; a collection instrument and a signal transmitter, the collection instrument is connected with the shielded wire, and the signal transmitter is connected with the shielded wire; the collection instrument and the signal transmitter are used to transmit the collected data to the control center.

[0009] According to some embodiments of the present application, the combined baffle comprises a plurality of baffle units, the plurality of baffle units are sequentially spliced along the extension direction of the prefabricated wharf, and the adjacent two baffle units are detachably connected; each baffle unit is provided with a grouting hole; each baffle unit is detachably connected with the caisson fore toe through a connecting piece; each baffle unit is detachably connected with the bed through a fixing piece; and the baffle unit is used to prevent grouting overflow.

[0010] According to some embodiments of the present application, the connecting piece comprises a limiting ring and a limiting buckle matched with the limiting ring; the limiting ring and the limiting buckle are alternatively arranged on the baffle unit and the caisson fore toe.

[0011] According to some embodiments of the present application, the grouting mechanism comprises: a material conveying and hoisting assembly, which is detachably arranged on the parapet wall of the fabricated wharf, and is used for conveying the grouting material and carrying out the engineering; a grouting pipe, one end of which is connected with the material conveying and hoisting assembly, and the other end of which is communicated with the repair cavity through the grouting hole, the material conveying and hoisting assembly adjusts the position of the grouting pipe so that the output end of the grouting pipe is aligned with the grouting hole, and the grouting pipe injects the grouting material into the repair cavity.

[0012] According to some embodiments of the present application, the material conveying and hoisting assembly comprises: a base, which is detachably arranged on the parapet wall; a material hopper, which is arranged on the base, and the output end of which is communicated with the input end of the grouting pipe, and the material hopper is used for storing the grouting material; a first hoisting member, which is connected with the grouting pipe, and is used for limiting the position of the grouting pipe in the horizontal direction; and a second hoisting member, which is arranged on the base, and is connected with the first hoisting member, and is used for limiting the position of the first hoisting member in the vertical direction.

[0013] According to the diagnosis and repair method for the hollowed-out base bed of the fabricated wharf according to the second aspect of the present application, the method comprises:

[0014] S1: obtaining initial data of the stress sensor after the caisson contacts with the base bed, and storing the initial data as a reference value in the control center;

[0015] S2: obtaining real-time data of the stress sensor, analyzing the pressure change trend according to the initial data and the real-time data, and presetting a threshold range according to the pressure change trend;

[0016] S3: obtaining the position of the abnormal stress sensor according to the preset threshold range, analyzing the base bed pressure change trend according to the monitoring data of the abnormal stress sensor, and obtaining the base bed hollowed-out area range according to the base bed pressure change trend;

[0017] S4: obtaining the grouting amount of the underwater non-segregation concrete and the number of baffle units according to the base bed hollowed-out area range;

[0018] S5: splicing a plurality of baffle units, installing the plurality of baffle units after splicing to the caisson corresponding to the data abnormal monitoring mechanism and across the caisson and the base bed, inserting the grouting pipe into the grouting hole, and injecting the underwater non-segregation concrete into the repair cavity through the grouting pipe by the material conveying and hoisting assembly until the data monitored by the abnormal stress sensor returns to the preset threshold range.

[0019] According to some embodiments of the present application, further comprising S6: when the base bed hollowed-out area is repaired, obtaining the construction log and technical documents of the base bed hollowed-out area, checking the state of the repaired area according to the construction log and technical documents, and optimizing the monitoring parameters and repair strategies according to the actual running state.

[0020] According to some embodiments of the present invention, in S3, analyzing the pressure change trend based on the monitoring data of the abnormal stress sensor includes: locking the position of the abnormal stress sensor when the data measured by the stress sensor in the bed cavitation area is lower than a preset threshold range; acquiring the monitoring data of the abnormal stress sensor; acquiring the monitoring data of the stress sensors around the abnormal stress sensor; analyzing the pressure change trend based on the monitoring data of the abnormal stress sensor and the stress sensors around it; and acquiring the horizontal extension range of the bed cavitation based on the pressure change trend.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0023] Figure 1 This is a schematic diagram of the structure of the diagnostic and repair device for the erosion of the prefabricated wharf foundation bed according to an embodiment of the present invention;

[0024] Figure 2 yes Figure 1 Schematic diagram of the mid-breast wall structure;

[0025] Figure 3 yes Figure 1 A schematic diagram of the caisson structure of a prefabricated wharf;

[0026] Figure 4 yes Figure 3 Vertical cross-sectional view of the caisson;

[0027] Figure 5 yes Figure 3 Horizontal cross-section of the front toe of the caisson;

[0028] Figure 6 yes Figure 1 Schematic diagram of the combined baffle in the middle;

[0029] Figure 7 yes Figure 1 Enlarged view of point A in the middle;

[0030] Figure 8 yes Figure 1 Cross-sectional view;

[0031] Figure 9 yes Figure 1 Schematic diagram of the structure of the medium-sized material conveying hoisting assembly;

[0032] Figure 10 This is a flowchart illustrating the diagnostic and repair method for hollowing out the prefabricated wharf foundation bed according to an embodiment of the present invention.

[0033] Reference signs:

[0034] Monitoring mechanism 100, protection tube 110, stress sensor 120, shielding wire 130, signal transmitter 140;

[0035] Control center 200;

[0036] Combined baffle 300, repair cavity 310, baffle unit 320, grouting hole 321, anti-overflow rubber 322, connecting piece 330, limiting ring 331, limiting buckle 332, fixing piece 340;

[0037] Grouting mechanism 400, material conveying and hoisting assembly 410, base 411, material conveying hopper 412, first hoisting piece 413, second hoisting piece 414, grouting pipe 420;

[0038] Solar power supply system 500;

[0039] Fabricated wharf 10, caisson 11, caisson fore toe 11a, parapet 12, bed 20. DETAILED DESCRIPTION

[0040] In the description of the present application, it should be understood that the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0041] In the description of the present application, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the sequence of technical features indicated.

[0042] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0043] Reference Figures 1 to 9 The present application discloses a diagnosis and repair device and method for the fabricated wharf bed of the fabricated wharf.

[0044] As Figure 1 And Figure 9As shown, the diagnosis and repair device for the hollowed-out caisson foundation of the prefabricated wharf according to the first aspect of the present application comprises a plurality of monitoring mechanisms 100, a control center 200, a combined baffle 300 and a plurality of grouting mechanisms 400. The plurality of monitoring mechanisms 100 are arranged in the prefabricated wharf 10, and are uniformly distributed along the length direction of the prefabricated wharf 10. The monitoring mechanisms 100 are used to monitor the stress data between different positions of the prefabricated wharf 10 and the foundation 20. The control center 200 is electrically connected with the monitoring mechanisms 100, and is used to record and analyze the data obtained by the monitoring mechanisms 100. The combined baffle 300 is arranged on the caisson 11 corresponding to the monitoring mechanism 100 with abnormal data. The combined baffle 300 is detachably connected with the caisson 11 and the foundation 20. The combined baffle 300 is arranged between the caisson 11 and the foundation 20. The combined baffle 300, the caisson 11 and the foundation 20 form a repair cavity 310. The plurality of grouting mechanisms 400 are detachably arranged on the parapet 12 of the prefabricated wharf. The plurality of grouting mechanisms 400 are uniformly distributed along the length direction of the prefabricated wharf 10. The plurality of grouting mechanisms 400 are detachably connected with the combined baffle 300. The grouting mechanisms 400 are connected with the combined baffle 300, and the grouting mechanisms 400 are used to fill the repair cavity 310 by grouting, so as to repair and reinforce the hollowed-out foundation 20 at the bottom of the prefabricated wharf 10.

[0045] The gravity wharf is a kind of wharf structure formed by a parapet 12, a wall body, a foundation, backfilling behind the wall and wharf auxiliary facilities, and mainly relies on its own weight to maintain the anti-sliding and anti-tilting stability of the structure. The wall body is generally formed by sequentially splicing a plurality of prefabricated caissons 11. The caissons 11 stand on the foundation, and the parapet 12 is arranged on the top of the caissons 11. The bottom of each caisson 11 is provided with a front toe which protrudes from the surface of the caisson 11 to help the caisson 11 sunk into the seabed to remain stable. It should be noted that the foundation 20 is a riprap foundation 20. In a harsh and complex hydrological environment, the riprap foundation 20 is easily affected by factors such as water flow scouring, wave impact and tugboat operation, and the like, and the hollowing-out phenomenon of the foundation 20 occurs. The hollowing-out of the foundation 20 not only affects the safety, applicability and durability of the wharf, but also causes problems such as cracks, structural damage, uneven settlement and the like, and finally may cause serious damage or even failure of the wharf structure.

[0046] The hollowing-out of the foundation 20 has multiple causes. One cause is construction defects, such as improper stone grading which causes the gravel particle size to be too small and easily carried away by the water flow, resulting in cavities on the surface of the foundation 20. Another cause is the influence of water area dredging. Excessive dredging of the water area in front of the wharf changes the local water flow conditions, causing the foundation 20 to lose support and slide. A third cause is the complex hydrological conditions. Under the combined action of waves and water flow, especially in high flow velocity areas, the materials of the foundation 20 gradually flow away. A fourth cause is the influence of ships. The large flow field generated when the tugboat approaches and departs also accelerates the hollowing-out process of the foundation 20.

[0047] At present, the method of post-repair is usually used for the problem of the base 20 being washed out, for example, the damage is detected by means of underwater exploration by divers, underwater video recording and other means, and repair is carried out by means of supplementing block stones, raising concrete, and mold bag concrete. However, due to the lack of early warning mechanism in the traditional method, it is difficult to realize real-time monitoring and early warning of the condition of the base 20, and preventive measures cannot be taken in time. Only when the damage reaches a certain degree and obvious signs appear, can the problem be found, at this time, great damage has been caused. In complex environment, especially in underwater environment, the repair work is difficult, the cost is high and the efficiency is low.

[0048] As shown in Figure 1 The plurality of monitoring mechanisms 100 are arranged along the extension direction of the prefabricated wharf 10, and all the monitoring mechanisms 100 are connected with the control center 200 to form a distributed sensing network. The combined baffle 300 is arranged between the caisson 11 and the base 20, and the caisson 11 and the base 20 are respectively detachably connected with the combined baffle 300. When the base 20 is washed out, the combined baffle 300 is arranged between the caisson 11 and the base 20 to form a repair cavity 310, and the grouting mechanism 400 arranged on the prefabricated wharf 10 extends from the breast wall 12 to the combined baffle 300 and is connected with the repair cavity 310 through the combined baffle 300. The pressure change of the base 20 is monitored in real time by the plurality of monitoring mechanisms 100, and the grouting mechanism 400 is started quickly after the specific washed-out position is accurately positioned to accurately repair the washed-out position of the base 20 and restore the integrity of the base 20. Thus, the abnormal condition can be identified at the initial stage of washing out, the timely discovery and repair of the problem of the base 20 are realized, the structural stability and safety of the prefabricated wharf 10 are ensured, the diving operation is reduced, the risk of seabed operation is reduced, the efficiency and quality of repair work are improved, the frequency of large-scale maintenance of the wharf is reduced through continuous monitoring of the health condition of the base 20, the maintenance cost is reduced, and the digital operation and maintenance level of the wharf is improved.

[0049] In some embodiments of the present application, a solar power supply system 500 is further included, which is arranged on the prefabricated wharf 10, all the monitoring mechanisms 100 are electrically connected with the solar power supply system 500, and the solar power supply system 500 is electrically connected with the control center 200, and the solar power supply system 500 is used to provide power for the monitoring mechanisms 100 and the control center 200. Figure 2As shown, the solar power system 500 includes a plurality of solar power modules, each monitoring mechanism 100 is equipped with a solar power module, and all the solar power modules are installed on the parapet 12 of the prefabricated wharf 10 and connected with the control center 200. Thus, the solar power system 500 provides reliable power support for monitoring and repairing the scouring problem of the bed 20, the whole system realizes self-sufficient power supply, at the same time, reduces the dependence on traditional power network, and improves the reliability and sustainability of offshore operation.

[0050] In some embodiments of the present application, the monitoring mechanism 100 includes a protection tube 110, the protection tube 110 is embedded in the caisson 11, and the protection tube 110 is located at the sea side of the caisson 11; a stress sensor 120, the stress sensor 120 is arranged in the protection tube 110, and the stress sensor 120 is located at the bottom of the caisson 11, the stress sensor 120 is used for monitoring the pressure change between the caisson 11 and the bed 20; a shielded wire 130, the shielded wire 130 is arranged in the protection tube 110, the shielded wire 130 is electrically connected with the stress sensor 120, and the shielded wire 130 is used for transmitting signals and reducing the interference of external electromagnetic field on the stress sensor 120; a collection instrument and a signal transmitter 140, the collection instrument is connected with the shielded wire 130, and the signal transmitter 140 is connected with the shielded wire 130, the collection instrument and the signal transmitter 140 are used for transmitting the collected data to the control center 200.

[0051] As shown in Figure 3 , Figure 4 and Figure 5 , the protection tube 110 is embedded in the caisson 11, the stress sensor 120 is arranged in the protection tube 110 and located at the end of the caisson 11 close to the bed 20, the shielded wire 130 is arranged in the protection tube 110 to reduce the interference of external electromagnetic field on the sensor, and the stress sensor 120 and the shielded wire 130 are connected through a cable to enable the stress sensor 120 to accurately capture the pressure change between the caisson 11 and the bed 20. The collection instrument is connected with the stress sensor 120 through a cable, used for receiving the pressure data transmitted by the sensor and processing and recording, and the signal transmitter 140 is connected with the collection instrument through a cable, used for transmitting the data collected by the collection instrument to the control center 200.

[0052] It should be noted that before the caisson 11 is prefabricated, the embedded protection pipe 110 needs to be arranged inside the caisson 11 template, the assembled caisson 11 is manufactured according to the design drawing, after the prefabrication is completed, the stress sensor 120 and the shielding wire 130 are connected and placed in the protection pipe 110, and then the shielding wire 130 is connected to the acquisition instrument and the signal transmitter 140. After the caisson 11 is installed, the stress sensor is in contact with the bed 20, the acquisition instrument and the signal transmitter 140 are arranged, and a communication connection is established with the control center 200, and finally the solar power supply system 500 is ensured to work normally, and continuous power is provided for the whole monitoring system.

[0053] Further, the protection pipe 110 extends downward from the top end of the caisson 11 to the bottom of the caisson 11, then extends horizontally to the caisson toe 11a, and extends along the length direction of the caisson toe 11a. Correspondingly, the stress sensor 120 is provided with a plurality of stress sensors 120, and the plurality of stress sensors 120 are uniformly distributed in the protection pipe 110 along the length direction of the caisson toe 11a, thereby forming a distributed sensor network.

[0054] In some specific embodiments of the present application, the combined baffle 300 comprises a plurality of baffle units 320, the plurality of baffle units 320 are sequentially spliced along the extension direction of the assembled wharf, and the adjacent two baffle units 320 are detachably connected. Each baffle unit 320 is provided with a grouting hole 321, each baffle unit 320 is detachably connected with the caisson toe 11a through a connecting piece 330, and each baffle unit 320 is detachably connected with the bed 20 through a fixing piece 340. The baffle unit 320 is used for preventing grouting overflow.

[0055] As shown in Figure 6 and Figure 7 , a plurality of baffle units 320 are spliced to form a combined baffle 300, each baffle unit 320 is provided with a grouting hole 321, and each baffle unit 320 is provided with a connecting piece 330 and a fixing piece 340. In this specific embodiment, the connecting piece 330 is arranged at the top of the baffle unit 320, and the fixing piece 340 is arranged at the bottom of the baffle unit 320. Each baffle unit 320 is detachably connected with the caisson toe 11a through the connecting piece 330, and each baffle unit 320 is detachably connected with the bed 20 through the fixing piece 340.

[0056] Specifically, the connecting piece 330 comprises a limiting ring 331 and a limiting buckle 332 that can cooperate with the limiting ring 331, and the limiting ring 331 and the limiting buckle 332 are alternatively arranged on the baffle unit 320 and the caisson fore toe 11a. In the specific embodiment, the limiting ring 331 is arranged on the baffle unit 320, and the limiting buckle 332 is arranged on the caisson fore toe 11a. Specifically, a plurality of limiting buckles 332 are arranged on the caisson fore toe 11a, and the plurality of limiting buckles 332 are uniformly distributed along the extension direction of the prefabricated wharf 10. Thus, through the design of the limiting ring 331 and the limiting buckle 332, the precise connection of the baffle unit 320 and the caisson fore toe 11a can be achieved. No matter where the hollowed-out area is in the prefabricated wharf 10, the baffle unit 320 can be flexibly adjusted and arranged according to the needs, and the spliced baffle unit 320 can be accurately placed on the specified position, which is convenient for installation, maintenance and replacement, and adapts to different repair needs and site conditions. At the same time, the stability and reliability of the overall structure are improved, and the maintenance cost and operation difficulty are reduced.

[0057] Specifically, the fixing piece 340 is a plurality of spikes arranged along the length direction of the baffle unit 320. During installation, the spikes only need to be inserted into the bed 20 to firmly fix each baffle unit 320 on the bed 20, which simplifies the installation process, reduces the technical requirements and time cost of installation, and improves the stability of the overall structure.

[0058] Reliability: The spikes as the fixing piece 340 have strong tensile strength and compressive strength, and can reliably fix the baffle unit 320, ensuring that the baffle unit 320 will not fall off or shift during use.

[0059] In some specific embodiments of the present application, the grouting mechanism 400 comprises: a material conveying and hoisting assembly 410, which is detachably arranged on the coping 12 of the prefabricated wharf 10, and is used for conveying grouting materials and carrying out engineering; a grouting pipe 420, one end of which is connected with the material conveying and hoisting assembly 410, and the other end of which is in communication with the repair cavity 310 through the grouting hole 321. The material conveying and hoisting assembly 410 adjusts the position of the grouting pipe 420 to align the output end of the grouting pipe 420 with the grouting hole 321, and the grouting pipe 420 injects grouting materials into the repair cavity 310.

[0060] In some specific embodiments of the present application, the material feeding and hoisting assembly 410 comprises a base 411 which is detachably arranged on the parapet 12, a material hopper 412 which is arranged on the base 411, the output end of the material hopper 412 being in communication with the input end of the grouting pipe 420, the material hopper 412 being used for storing the grouting material, a first hoisting member 413 which is connected with the material hopper 412 and the grouting pipe 420, the first hoisting member 413 being used for limiting the position of the grouting pipe 420 in the horizontal direction, and a second hoisting member 414 which is arranged on the base 411 and connected with the first hoisting member 413, the second hoisting member 414 being used for limiting the position of the material hopper 412 and the first hoisting member 413 in the vertical direction.

[0061] As shown in Figure 8 and Figure 9 , the material feeding and hoisting assembly 410 is detachably arranged on the parapet 12 of the fabricated wharf 10, one end of the grouting pipe 420 is connected with the material feeding and hoisting assembly 410, and the other end is in communication with the repair cavity 310 through the grouting hole 321. When the combined baffle 300 is installed on the corresponding hollowed-out area of the bed 20, the material feeding and hoisting assembly 410 adjusts the position of the grouting pipe 420 so that the output end thereof is aligned with the grouting hole 321, and then the grouting material is transported and injected into the repair cavity 310 through the grouting pipe 420, thereby completing the grouting operation. Specifically, the material hopper 412, the first hoisting member 413 and the second hoisting member 414 are wound on the base 411, and after being accurately positioned at a specific hollowed-out position and the installation of the combined baffle 300 is completed, the base 411 is arranged at the corresponding position on the parapet 12, the length of the first hoisting member is adjusted and the height of the second hoisting member is adjusted, so that the output end of the grouting pipe 420 is aligned with the grouting hole 321 on the corresponding baffle unit 320, the grouting pipe 420 is inserted into the grouting hole 321, and then the grouting is performed on the repair cavity 310 to repair the damaged area. Therefore, the repair efficiency can be greatly improved, the repair material can efficiently play a role in the repair cavity 310, and through the synergistic effect of the material feeding and hoisting assembly 410, the grouting pipe 420 and the combined baffle 300, the diving operation is reduced, the risk of seabed operation is reduced, and a large amount of labor cost is saved.

[0062] Specifically, the anti-overflow rubber 322 is arranged on each grouting hole 321, which can effectively prevent the material from overflowing during the grouting process, ensure that the grouting material only flows into the repair cavity 310, and avoid waste and pollution.

[0063] As shown in Figure 10 , the diagnosis and repair method for the hollowed-out bed of the fabricated wharf according to the second aspect of the present application comprises:

[0064] S1: obtaining initial data of the stress sensor 120 after the caisson 11 contacts the foundation bed 20, storing the initial data as a reference value in the control center 200;

[0065] S2: obtaining real-time data of the stress sensor 120, analyzing the pressure change trend according to the initial data and the real-time data, and presetting a threshold range according to the pressure change trend;

[0066] S3: obtaining the position of the abnormal stress sensor 120 according to the preset threshold range, analyzing the pressure change trend of the foundation bed 20 according to the monitoring data of the abnormal stress sensor 120, and obtaining the range of the foundation bed hollow area according to the pressure change trend of the foundation bed 20;

[0067] S4: obtaining the grouting amount of the underwater non-segregation concrete and the number of the baffle unit 320 according to the range of the foundation bed hollow area;

[0068] S5: splicing a plurality of baffle units 320, installing the plurality of baffle units 320 after splicing on the caisson 11 corresponding to the monitoring mechanism 100 with data anomaly and making them span between the caisson 11 and the foundation bed 20, inserting the grouting pipe 420 into the grouting hole 321, and injecting the underwater non-segregation concrete into the repair cavity 310 through the grouting pipe 420 by the material feeding and hoisting assembly 410, until the data monitored by the abnormal stress sensor 120 returns to the preset threshold range.

[0069] In some embodiments of the present application, S6: when the foundation bed hollow area is repaired, obtaining the construction log and technical documents of the foundation bed hollow area, checking the state of the repaired area according to the construction log and technical documents, and optimizing the monitoring parameters and repair strategies according to the actual running state.

[0070] In some embodiments of the present application, in S3, analyzing the pressure change trend according to the monitoring data of the abnormal stress sensor 120 includes: when the data measured by the stress sensor 120 in the foundation bed hollow area is lower than the preset threshold range, locking the position of the abnormal stress sensor 120, obtaining the monitoring data of the abnormal stress sensor 120, obtaining the monitoring data of the stress sensor 120 around the abnormal stress sensor 120, analyzing the pressure change trend according to the monitoring data of the abnormal stress sensor 120 and the stress sensor 120 around it, and obtaining the extension range of the foundation bed 20 hollow in the horizontal direction according to the pressure change trend.

[0071] The following is a specific embodiment of the method for diagnosing and repairing the foundation bed hollow of the assembled wharf.

[0072] Before the prefabrication of the caisson 11, the embedded protection pipe 110 inside the caisson 11 template is adjusted according to the size of the caisson 11, the number and distribution of the limiting buckles 332 are adjusted, and the assembled caisson 11 is assembled according to the design drawings. After the prefabrication is completed, the stress sensor 120 and the shielding wire 130 are connected and placed in the protection pipe 110, and then the shielding wire 130 is connected to the acquisition instrument and the signal transmitter 140. After the caisson 11 is installed, the stress sensor is in contact with the bed 20, the acquisition instrument and the signal transmitter 140 are configured, and the communication connection with the control center 200 is established, and finally the solar power supply system 500 is ensured to work normally, providing continuous power for the entire monitoring system.

[0073] When the caisson 11 is completely in place and in contact with the bed 20, the initial data of each stress sensor 120 after the caisson 11 is in contact with the bed 20 is obtained, and the initial data is stored as a reference value in the control center 200. The computer continuously receives real-time data from each stress sensor 120, analyzes the pressure change trend according to the initial data and the real-time data, and presets a threshold range according to the pressure change trend. It should be noted that once the reading of the stress sensor 120 at a certain position on the assembled wharf 10 significantly decreases, the early warning mechanism is triggered, and the possible existence of the bed 20 is prompted.

[0074] When the data measured by the stress sensor a is lower than the preset threshold range, the position of the abnormal stress sensor a is locked as the bed A, the monitoring data of the stress sensor a is obtained, and the monitoring data of the stress sensor b and the stress sensor c around the stress sensor a is obtained. It should be noted that the stress sensor a is located between the stress sensor b and the stress sensor c. Since only the real-time data of the stress sensor a is lower than the preset threshold range, it is analyzed that the maximum extension range of the bed emptying area in the horizontal direction is from the stress sensor b to the stress sensor c, the number of required baffle units 320 is calculated according to the distance between the stress sensor b and the stress sensor c, and the grouting amount is calculated according to the distance between the stress sensor b and the stress sensor c and the size of the caisson toe 11a.

[0075] A plurality of baffle units 320 are spliced, a conveying and hoisting assembly is used to hoist the plurality of baffle units 320 that have been spliced to the space between the caisson toe 11a and the bed 20, the limiting ring 331 on each baffle unit 320 is buckled on the corresponding limiting buckle 332 on the caisson toe 11a, the output end of the grouting pipe 420 is aligned with the grouting hole 321 by using the first hoisting part 413 and the second hoisting part 414, and then the output end of the grouting pipe 420 is inserted into the grouting hole 321. The conveying and hoisting assembly 410 injects underwater non-segregation concrete into the repair cavity 310 through the grouting pipe 420 until the data monitored by the abnormal stress sensor 120 returns to the preset threshold range.

[0076] It should be noted that the corresponding number of grouting mechanisms 400 is set according to the size of the hollowed-out area of the bed 20, so as to ensure that the rapid repair of the hollowed-out area of the bed is realized while the economy of the repair project is ensured.

[0077] When the repair of the hollowed-out area of the bed is completed, the construction log and technical documents of the hollowed-out area of the bed are obtained, the state of the repaired area is checked according to the construction log and technical documents, and the monitoring parameters and repair strategies are optimized according to the actual running state. Thus, scientific and effective guidance to the users is realized, at the same time, through the continuous monitoring of the health condition of the bed 20, the frequency of large-scale maintenance of the wharf can be reduced, the maintenance cost can be reduced, and the digital operation and maintenance level of the wharf can be improved.

[0078] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above-described embodiments, and various changes can be made within the knowledge range of ordinary skilled in the art without departing from the purpose of the present application.

Claims

1. A diagnostic and repair device for cavitation of prefabricated wharf foundation, characterized in that, include: Multiple monitoring units (100) are located within the prefabricated wharf (10) and are evenly distributed along the length of the prefabricated wharf (10). The monitoring units (100) are used to monitor stress data between different locations on the prefabricated wharf (10) and the foundation bed (20). The monitoring agency (100) includes: A protective pipe (110) is buried inside the caisson (11) and the protective pipe (110) is located at the seaward end of the caisson (11); A stress sensor (120) is installed inside the protective tube (110). The stress sensor (120) is located at the bottom of the caisson (11). The stress sensor (120) is used to monitor the pressure change between the caisson (11) and the foundation bed (20). A shielding wire (130) is disposed in the protective tube (110). The shielding wire (130) is electrically connected to the stress sensor (120). The shielding wire (130) is used to transmit signals and reduce the interference of external electromagnetic fields on the stress sensor (120). A data acquisition device and a signal transmitter (140), wherein the data acquisition device is connected to the shielded wire (130) and the signal transmitter (140) is connected to the shielded wire (130); A control center (200) is electrically connected to the monitoring agency (100). The control center (200) is used to record and analyze the data acquired by the monitoring agency (100). The data acquisition device and the signal transmitter (140) are used to transmit the collected data to the control center (200). A combined baffle (300) is installed on the caisson (11) corresponding to the monitoring mechanism (100) with abnormal data. The combined baffle (300) is detachably connected to the caisson (11) and detachably connected to the base bed (20). The combined baffle (300) is straddled between the caisson (11) and the base bed (20). The combined baffle (300), the caisson (11) and the base bed (20) enclose and form a repair cavity (310). The combined baffle (300) includes multiple baffle units (320), which are sequentially spliced ​​along the extension direction of the prefabricated wharf. Adjacent baffle units (320) are detachably connected. Each baffle unit (320) is provided with a grouting hole (321). Each baffle unit (320) is detachably connected to the front toe (11a) of the caisson via a connector (330). Each baffle unit (320) is detachably connected to the foundation bed (20) via a fastener (340). The baffle unit (320) is used to prevent grout overflow. A plurality of grouting mechanisms (400) are detachably mounted on the breast wall (12) of the prefabricated wharf. The plurality of grouting mechanisms (400) are evenly distributed along the extension direction of the prefabricated wharf (10). The plurality of grouting mechanisms (400) are detachably connected to the combined baffle (300). The grouting mechanism (400) and the combined baffle (300) are connected so that the output end of the grouting mechanism (400) is connected to the repair cavity (310), thereby repairing and reinforcing the hollowed-out foundation bed (20) at the bottom of the prefabricated wharf (10) by grouting.

2. The diagnostic and repair device for cavitation of prefabricated wharf foundation as described in claim 1, characterized in that, It also includes a solar power supply system (500) located on the prefabricated wharf (10), all of the monitoring agencies (100) being electrically connected to the solar power supply system (500), the solar power supply system (500) being electrically connected to the control center (200), and the solar power supply system (500) being used to provide power to the monitoring agencies (100) and the control center (200).

3. The diagnostic and repair device for cavitation of prefabricated wharf foundation as described in claim 1, characterized in that, The connector (330) includes a limiting ring (331) and a limiting buckle (332) that can cooperate with the limiting ring (331). The limiting ring (331) and the limiting buckle (332) are optionally disposed on the baffle unit (320) and the other is disposed on the front toe (11a) of the caisson.

4. The diagnostic and repair device for cavitation of prefabricated wharf foundation as described in claim 1, characterized in that, The grouting mechanism (400) includes: Material conveying and hoisting assembly (410), which is detachably mounted on the breast wall (12) of the prefabricated wharf (10), is used for conveying grouting materials and handling engineering. A grouting pipe (420) is provided, one end of which is connected to the material conveying and hoisting assembly (410), and the other end of which is connected to the repair cavity (310) through the grouting hole (321). The material conveying and hoisting assembly (410) adjusts the position of the grouting pipe (420) so that the output end of the grouting pipe (420) is aligned with the grouting hole (321). The grouting pipe (420) injects grouting material into the repair cavity (310).

5. The diagnostic and repair device for caving in prefabricated wharf foundations according to claim 4, characterized in that, The material conveying and hoisting assembly (410) includes: A base (411) is detachably mounted on the breast wall (12); A material conveying hopper (412) is provided on the base (411). The output end of the material conveying hopper (412) is connected to the input end of the grouting pipe (420). The material conveying hopper (412) is used to store grouting materials. The first lifting component (413) is connected to the grouting pipe (420) and is used to define the position of the grouting pipe (420) in the horizontal direction. The second lifting component (414) is disposed on the base (411) and is connected to the first lifting component (413). The second lifting component (414) is used to limit the position of the first lifting component (413) in the vertical direction.

6. A method for diagnosing and repairing cavitation in the foundation bed of a prefabricated wharf, characterized in that, The diagnostic and repair device for erosion of prefabricated wharf foundation as described in claim 4 includes: S1: Obtain the initial data of the stress sensor (120) after the caisson (11) comes into contact with the foundation bed (20), and store the initial data as a reference value in the control center (200); S2: Obtain real-time data from the stress sensor (120), analyze the pressure change trend based on the initial data and the real-time data, and preset a threshold range based on the pressure change trend; S3: Obtain the location of the abnormal stress sensor (120) according to the preset threshold range, analyze the pressure change trend of the base bed (20) according to the monitoring data of the abnormal stress sensor (120), and obtain the range of the base bed cavitation area according to the pressure change trend of the base bed (20); S4: Based on the range of the cavitation area of ​​the subgrade, obtain the grouting volume of the underwater non-segregating concrete and the number of the baffle units (320); S5: Assemble multiple baffle units (320), install the assembled multiple baffle units (320) onto the caisson (11) corresponding to the monitoring mechanism (100) with abnormal data and place it across the caisson (11) and the foundation bed (20), insert the grouting pipe (420) into the grouting hole (321), and the material conveying and hoisting assembly (410) injects underwater non-segregating concrete into the repair cavity (310) through the grouting pipe (420) until the data monitored by the abnormal stress sensor (120) recovers to the preset threshold range.

7. The method for diagnosing and repairing cavitation in the foundation bed of a prefabricated wharf according to claim 6, characterized in that, It also includes S6: After the repair of the cavitated area of ​​the subgrade bed is completed, the construction log and technical documents of the cavitated area of ​​the subgrade bed are obtained, the status of the repaired area is checked according to the construction log and the technical documents, and the monitoring parameters and repair strategies are optimized according to the actual operating status.

8. The method for diagnosing and repairing cavitation in the foundation bed of a prefabricated wharf according to claim 6, characterized in that, In S3, the analysis of pressure change trends based on the monitoring data of the stress sensor (120) includes: When the data measured by the stress sensor (120) in the hollowed-out area of ​​the base bed is lower than the preset threshold range, the position of the abnormal stress sensor (120) is locked. Acquire monitoring data from the stress sensor (120) that is abnormal; Acquire monitoring data of the stress sensor (120) around the stress sensor (120) in case of anomaly; The pressure change trend is derived from the analysis of the monitoring data of the stress sensor (120) and the stress sensors (120) around it. Based on the pressure change trend, the horizontal extension range of the base bed (20) cavitation is obtained.

Images