Caisson wharf and construction method therefor

Abstract

The present invention provides a caisson wharf and a construction method therefor, a base adopts a layered structure of a steel slag-rubber particle composition lower layer and regenerating resin—basalt fiber composition upper layer in combination with a silane coupling agent to enhance interface bonding; a foundation bed is formed by assembling prefabricated concrete modules and pouring nano mortar; a caisson main body is provided with a positioning plate to be inserted into a guide groove, filled with multi-graded steel slag fragments, and pre-embedded with an independent air bag chamber; a buoyancy force control system adjusts a water injection quantity based on multi-sensor data; an ecological permeable pipeline network adopts a diatomite-zeolite coating; and a prestress wire towing system is regulated by a friction damper. The invention has obvious advantages in structural stability, ecological friendliness, construction efficiency and automation, can solve existing problems, and meet the requirements of modern port construction.

Description

TECHNICAL FIELD The present invention relates to a wharf structure. More particularly, the present invention relates to a caisson wharf and a construction method therefor. BACKGROUND A traditional caisson wharf has the following problems in long-term use: 1) a base is made of a single material, which is prone to uneven settlement, and an insufcient interfacial bonding strength leads to interlayer stripping; 2) caisson positioning depends on large-scale lifting equipment, so that it is difcult to ensure a construction accuracy, and it is easy to cause deviation during towing; 3) a buoyancy force is manually adjusted, which has a slow response speed and a low accuracy, and is difcult to cope with complex hydrological conditions; 4) the structure has a poor water permeability, which leads to serious siltation and is not conducive to ecological restoration; and 5) a large number of non-renewable materials are used during construction, resulting in insufcient environmental protection. The prior art attempts to improve the stability by adding a counterweight or optimizing a structure of a foundation bed, but it does not solve the problem of dynamic regulation under an action of multi-eld coupling. In terms of ecological restoration, traditional permeable holes are prone to be blocked and lack a selfcleaning ability. In terms of construction, the splicing accuracy of prefabricated modules and the control of grouting density are still technical difculties. SUMMARY One objective of the present invention is to solve at least the above problems, and to provide at least the advantages that will be described hereinafter. In order to achieve these objectives and other advantages according to the present invention, a caisson wharf is provided, which comprises: a base, which comprises a lower layer formed by steel slag-rubber particle composition and an upper layer formed by regenerating resin-basalt ber composition, wherein the lower layer is lled in a circulating steel skeleton, and a silane coupling agent is sprayed between the layers to enhance interface bonding; a foundation bed, which is arranged on an upper surface of the upper layer and formed by assembling a plurality of prefabricated concrete modules, wherein an upper surface of each module is provided with a positioning groove, and the plurality of positioning grooves are communicated with each other to form a continuous guide groove; and nano-silica-modied epoxyresinbased mortar is poured into a gap between the modules; a caisson main body, which is provided with a positioning plate at a bottom portion to be inserted and xed into the guide groove of the foundation bed, wherein the caisson is lled with multi-graded steel slag fragments in an interior and provided with a cast-in-place concrete breast wall at a top portion, 3-5 independent air bag chambers distributed transversely are pre-embedded in a bottom plate of the caisson, and each chamber is connected with a top water injection system through an electric proportion adjusting valve; a buoyancy force control system, which comprises a water pressure sensor, an inclinometer, an ultrasonic liquid level meter and a Doppler current meter mounted on the caisson, wherein the buoyancy force control system calculates a dynamic water injection quantity of each air bag chamber through an edge computing chip based on real-time data of the sensor, and controls the electric proportion adjusting valve to execute water injection; an ecological permeable pipeline network, which is arranged at a junction between a side wall of the caisson and the base, wherein an inner diameter of a pipeline is 2200 m, an inner wall of the pipeline is provided with a diatomite-zeolite composite coating, and a tail end of the pipeline extends to a backlled region and is provided with an ecological lter module; and a prestress wire towing system, which comprises multiple groups of prestress wires transversely penetrating through reserved pore channels of adjacent caisson main bodies, wherein tail ends of the prestress wires are connected with a mechanical friction damper, and the damper dynamically adjusts a damping force according to GPS positioning data, by a calculation formulaas follows: Fd :Fbasel'k'AX'l / oset; wherein, F base=10 kN, k=0.8 kN-s / m, Ax is a transverse offset (unit: m), and Vofjsetls an offset velocity (unit: m / s). Preferably, according to the caisson wharf, a water injection quantity and a pressure of each chamber are adjusted, specically: a draft is acquired in real time by the water pressure sensor, an inclination angle is acquired by the inclinometer, an external water ow velocity is acquired by the Doppler current meter, and a water level of each chamber is monitored by the ultrasonic liquid level meter; according to a relationship curve between a remaining volume of the air bag chamber (excluding a lling volume of the steel slag) and a buoyancy force, a total buoyancy force required to maintain balance is calculated in combination with a current draft; the demand of total buoyancy force is equally divided according to a number of chambers to obtain a basic water injection quantity Qbase; if the inclination angle is 0>1° and 655°, an actual water injection quantity of a chamber on a sinking side is: Qadj=QbaseX(l+0.19); and an actual water injection quantity of a chamber on a oating side is: Qadj=QbaseX(l0.19), and an adjustment period is 10 seconds; if the external water ow velocity is V>l m / s and VS3 m / s, and the inclination angle is 955°, a water injection quantity of a chamber in a direction of upstream face is corrected as follows: Qadj=QbaseX(l+0.l -(Vl)-6), and the adjustment period is 5 seconds; and when the inclination angle is 0>5° and a difference between a highest water level and a lowest water level in the caisson is >30 cm, and the situation lasts for more than 30 seconds, a water injection valve is closed, and a spare buoyancy force air bag is started to inate at an ination pressure of P=0.2+0.05X(6-5) Mpa, wherein a maximum ination pressure is not greater than 0.4 MPa. Preferably, according to the caisson wharf, water pressure sensors at four corners of the caisson are symmetrically mounted at a height of 0.5 m from the bottom plate, with a measuring range of 02 MPa and a sampling frequency of 220 Hz; the inclinometer is mounted at a part 0.3 m above a vertical line of gravity center of the caisson, with a measuring range of i20° and a resolution of 0.0050; the Doppler current meter is arranged on a side wall of upstream face of the caisson at a height of 0.8-1.2 m from a water surface, with a measuring range of 0-5 m / s and an accuracy of i005 m / s; and the ultrasonic liquid level meters are longitudinally arranged at intervals of 2 m, and a dualprobe redundancy design is adopted, with a data fusion error of Sil cm. Preferably, according to the caisson wharf, a generation method for the buoyancy force relationship curve comprises: calibrating a relationship between the remaining volume of the air bag chamber and the buoyancy force by an experiment: F=pg(Vmm10.65 Vslag), wherein p is a density of seawater (p=1025 kg / m3), g is an acceleration of gravity, VtomllS a total volume of the chamber (m3), and Vszagis a lling volume of the steel slag (m3); and establishing a buoyancy force-water injection quantity mapping table, wherein a resolution of the water injection quantity is 55 L, and a linear interpolation error is <l%. Preferably, according to the caisson wharf, a control algorithm of the edge computing chip further comprises fuzzy PID adjustment: an inclination angle error 66:6actual_6target and an error change rate Aeg / At are dened as input variables; and a dynamic weight distribution formula is: Kjew = Kga - (1 + 0.2 -%) wherein, KËase=08 is a basic proportion coefcient, Kÿew=05 is a corrected proportion coefcient, and weight distribution is updated every 2 control periods; and the control period is 5100 ms, an overshoot is <2%, and a steadystate error is 50.10. Preferably, according to the caisson wharf, a preparation method for the ecological permeable pipeline network comprises: transversely drilling by a diamond drill bit to form the pipeline network, wherein a drilling diameter is 5-8 mm larger than a designed diameter of the pipeline; when the inner wall of the pipeline is provided with the diatomitezeolite composite coating, spraying in three stages: spraying a diatomite slurry according to a thickness of 0.5-1 mm in a rst stage, wherein a particle size of diatomite is 550 um; spraying a zeoliteepoxy resin mixture according to a thickness of 11.5 mm in a second stage, wherein a mass ratio of zeolite to resin is 3: l; spraying a hydrophobic modier according to a thickness of 0.2-0.5 mm in a third stage, wherein a spraying pressure is 0.3-0.4 MPa; and carrying out ultraviolet curing on each layer sprayed, wherein a wavelength is 365 nm and an irradiation intensity is 230 mW / cmZ. Preferably, according to the caisson wharf, the prestress wire towing system further comprises: a nano graphenepolyurethane composite coating arranged on a surface of the wire, wherein a coating thickness is 0.2-0.3 mm and a friction coefcient is 50.15; and the mechanical friction damper has threelevel adjustment modes: in a rst level mode: when Ax50.1 m, Fd :FbaselkAXVqSet; in a second level mode: when 0.1 m<Ax50.3 m, Fd =1.2Fbase+1.5k'AXVojÿ'set; in a third level mode: when Ax>0.3 m, Fd =1.5Fbase+2k-Ax-vo_17fset+,uN, wherein #:02, and N is a normal pressure; and mode switching response time is 5500 ms, and a damping force output error is 5i5%. Preferably, the caisson wharf further comprises a mechanical strain early warning device, which consists of a plurality of mechanical strain gauges and a linkage alarm mechanism, wherein the strain gauges are embedded in a junction between the upper layer of the regenerating resin-basalt ber composition and the lower layer of the base, and connected with an audible and visual alarm outside the caisson through a lever mechanism; when a local strain of the base exceeds 80% of a design value, the strain gauges trigger the lever to shift, and the linkage alarm sends out an audible and visual signal; and a nominal pressure range of the strain gauges is 05 MPa, a displacement transmission error is 5:1 mm, and alarm response time is 52 seconds. Preferably, the caisson wharf further comprises a passive tide adjustment structure, which consists of a tide gate and a oat valve arranged on a side wall of the caisson, wherein the tide gate is connected with the side wall of the caisson through a hinge, and the oat valve is mounted at awater inlet of the air bag chamber; the tide gate is automatically opened and closed according to a change of water level: when the water level rises, the oat valve oats up to open the water inlet, and the tide gate is turned outwardly to guide a water ow into the chamber; and when the water level descends, the oat valve sinks to close the water inlet, and the tide gate is retracted inwardly to reduce an impact of the water ow; and an opening angle Act of the tide gate is linearly related to the water level Ah, Aa=k-Ah (k is a proportion coefcient), a maximum opening angle is 60°, and a density of the oat valve is 1.21.5 times that of seawater. The present invention further provides a construction method for the caisson wharf, which comprises the following steps: Sl. construction of base: lling a gradient steel slag-rubber particle composite into the circulating steel skeleton in a layered mode to form the lower layer, compacting the lower layer by vibration rolling and then spraying the silane coupling agent; and paving the upper layer of regenerating resin-basalt ber composition, wherein a temperature of hot-press molding is 80-100°C, and a volume content of basalt ber is 15-20%; S2. mounting of foundation bed: positioning the prefabricated concrete modules by a total station, and injecting the nano-silica-modied epoxy-resinbased mortar by high-pressure grouting, wherein a grouting pressure is 0.3-0.5 MPa; S3. mounting of caisson: hoisting the caisson main body to the foundation bed, and guiding the positioning plate by GPS to be embedded into the guide groove; and lling the multi-graded steel slag fragments and compacting the lled steel slag fragments by vibration, and pre-embedding the prestress wires and electrifying and heating the pre-embedded prestress wires to 40°C to activate the coatings; S4. arrangement of permeable structure: transversely drilling to form the ecological permeable pipeline network, and carrying out plasma spraying of a photocatalytic Ti02 coating according to a thickness of 50-80 um; S5. regulationof towing system: applying an initial tension by the mechanical friction damper, and dynamically adjusting a damping force of a magnetorheological uid based on GPS data, wherein a towing velocity is 50.5 m / s; S6. dynamic control of water injection: carrying out PID closed-loop control on the water injection quantity of each chamber, and maintaining the inclination angle to be 51° and the water level difference between adjacent chambers to be 5 10 cm; S7. monitoring and correction: monitoring a strain of the base by a distributed optical ber sensing network, and triggering an early warning and adjusting a water injection rate when the strain exceeds a limit; and verifying a grouting compactness degree by ultrasonic imaging, and replenishing the slurry to a region with a grouting compactness degree of <95%; and S8. mounting of tide structure: mounting the tide gate and the oat valve on the side wall of the caisson, and debugging a linear relationship between the opening angle and the water level. The present invention comprises at least the following benecial effects: 1. According to the present invention, the base adopts the layered structure of the lower layer of steel slagrubber particle composition and the upper layer of regenerating resinbasalt ber composition, and the silane coupling agent is used to enhance interface bonding, thus preventing uneven settlement and interlayer stripping; the foundation bed is formed by assembling the prefabricated concrete modules and pouring the nano mortar, which enhance overall stability; the caisson main body is provided with the positioning plate to be inserted into the guide groove, lled with the multigraded steel slag fragments in the interior, and embedded with the independent air bag chamber at the bottom plate; and in combination with the buoyancy force control system, the water injection quantity can be dynamically adjusted according to the real-time sensor data, thus ensuring the stability and safety under complex hydrological conditions. According to the present invention, the ecological permeable pipeline network is provided with the diatomite-zeolite coating, which has a good adsorption performance, can lter and purify impurities and pollutants in seawater, and promotes the protection of marine ecological environment; and the ecological lter module at the tail end of the pipeline further enhances an ecological permeable function. The construction method provided by the present invention comprises the construction of base, the mounting of foundation bed, the mounting of caisson, the arrangement of permeable structure, the regulation of towing system, the dynamic control of water injection, the monitoring and correction, the mounting of tide structure, and other steps, and advanced materials, equipment and processes are adopted in each step, such as total station positioning, high-pressure grouting, GPS guidance and plasma spraying, thus ensuring the construction accuracy and quality, improving the construction efciency and reducing the construction period and cost. According to the present invention, the buoyancy force control system realizes the accurate dynamic control over the buoyancy force of the caisson based on the multi-sensor data and the fuzzy PID adjustment algorithm of the edge computing chip; the prestress wire towing system adjusts the damping force in real time according to the GPS positioning data through the mechanical friction damper, thus improving the safety and stability of towing process; and the mechanical strain early warning device and the passive tide adjustment structure further enhance the intelligent monitoring and adaptability of the wharf. Other advantages, objectives and features of the present invention will be partially reected by the following description, and will be partially understood by those skilled in the art through researching and practicing the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic structural diagram of a caisson wharf according to the present invention. Description of reference numerals: ll refers to lower layer; 12 refers to upper layer; 2 refers to foundation bed; 21 refers to bonding layer; 3 refers to caisson main body; 31 refers to positioning plate; and 32 refers to air bag chamber. DETAILED DESCRIPTION The present invention is further described in detail hereinafter with reference to the drawings and embodiments, so that those skilled in the art are capable of implementing according to the text of the specication. It should be understood that the terms such as "having," "including," and "comprising" as used herein do not exclude the presence or addition of one or more other elements or combinations thereof. It should be noted that experimental methods described in the following embodiments are all conventional methods unless otherwise specied. All the reagents and materials can be obtained commercially unless otherwise specied. In the description of the present invention, the orientation or position relationships indicated by the terms such as " transverse, "longitudinal", "upper", lower", "front", "rear", "left", "right", "vertical, "horizontal, "top", "bottom", "inner", "outer" and the like, refer to the orientation or position relationships shown in the drawings, which are only intended to facilitate describing the present invention and simplifying the description, and do not indicate or imply that the indicated devices or elements must have a specic orientation, be constructed and operated in a specic orientation, and therefore cannot be understood as a limitation of the present invention. As shown in FIG. 1, the present invention provides a caisson wharf, which comprises: a base, which comprises a lower layer formed by steel slag-rubber particle composition and an upper layer formed by regenerating resin-basalt ber composition, wherein the lower layer is lled in a circulating steel skeleton, and a silane coupling agent is sprayed between the layers to enhance interface bonding, so as to form a bonding layer; a foundation bed, which is arranged on an upper surface of the upper layer and formed by assembling a plurality of prefabricated concrete modules, wherein an upper surface of each module is provided with a positioning groove, and the plurality of positioning grooves are communicated with each other to form a continuous guide groove; and nano-silica-modied epoxyresinbased mortar is poured into a gap between the modules; a caisson main body, which is provided with a positioning plate at a bottom portion to be inserted and xed into the guide groove of the foundation bed, wherein the caisson is lled with multi-graded steel slag fragments in an interior and provided with a cast-in-place concrete breast wall at a top portion, 35 independent air bag chambers distributed transversely are pre-embedded in a bottom plate of the caisson, and each chamber is connected with a top water injection system through an electric proportion adjusting valve; a buoyancy force control system, which comprises a water pressure sensor, an inclinometer, an ultrasonic liquid level meter and a Doppler current meter mounted on the caisson, wherein the buoyancy force control system calculates a dynamic water injection quantity of each air bag chamber through an edge computing chip based on realtime data of the sensor, and controls the electric proportion adjusting valve to execute water injection; an ecological permeable pipeline network, which is arranged at a junction between a side wall of the caisson and the base, wherein an inner diameter of a pipeline is 2200 mm, an inner wall of the pipeline is provided with a diatomite-zeolite composite coating, and a tail end of the pipeline extends to a backlled region and is provided with an ecological lter module; and a prestress wire towing system, which comprises multiple groups of prestress wires transversely penetrating through reserved pore channels of adjacent caisson main bodies, wherein tail ends of the prestress wires are connected with a mechanical friction damper, and the damper dynamically adjusts a damping force according to GPS positioning data, by a calculation formulaas follows: Fd :FbaselkAX'l / oset; wherein, F base=10 kN, k=0.8 kN -s / rn, Ax is a transverse offset (unit: m), and Vojfsetis an offset velocity (unit: m / s). The above technical solution provides the caisson Wharf, in which the lower layer of the base is made of a steel slag-rubber particle composite lled in the circulating steel skeleton, and the composite not only has a good bearing capacity, but also can effectively absorb impact energy, thus reducing the vibration of the wharf during use. The upper layer is made of a regenerating resinbasalt ber composite, and the strength and durability of the composite are ensured by a hotpress molding process. The silane coupling agent is sprayed between the upper and lower layers to enhance interfacial bounding, thus preventing interlayer stripping. The lower layer of steel slag-rubber particle composition is formed by mixing steel slag particles and rubber particles in a certain proportion. The steel slag particles have high strength and wear resistance, while the rubber particles have good elasticity and shock absorption. The steel slag particles have a particle size range of 5-20 mm, and are divided into three grades: 5-10 mm, 10-15 mm and 15-20 mm, and a ratio of various grades of particle sizes is 3: 3: 2. The rubber particles have a particle size range of 15 mm, and are divided into two grades: 13 mm and 35 mm, and a ratio of two grades of particle sizes is l: 1. A mass ratio of the steel slag particles to the rubber particles is 7: 3. During mixing, the steel slag particles and the rubber particles are respectively screened to a specied particle size range rst, and then fully mixed in a mixing device in proportion, thus ensuring the uniform distribution of the particles. The mixed steel slagrubber particle composite is lled into the circulating steel skeleton in a layered mode, and a thickness of each layer is controlled at 30-50 cm. Compaction is carried out by a vibration rolling device to make a compaction degree reach above 95%, so as to ensure the compactness and bearing capacity of the composite lower layer. The lower layer is formed by mixing a regenerating resin and a basalt ber in a certain proportion. The regenerating resin has good adhesion and durability, while the basalt ber has high strength and good chemical resistance. The basalt ber has a diameter of 10-20 um and a length of 12-25 mm, and is divided into a short ber and a long ber, wherein the short ber has a length of 12-18 mm, the long ber has a length of 18-25 mm, and a ratio of the short ber to the long ber is 3: 2. A mass ratio of the regenerating resin to the basalt ber is 6: 1. During mixing, the regenerating resin is heated to a molten state at a temperature controlled at 130150°C rst, and then the basalt ber is added and fully stirred to evenly disperse the ber in the resin. The mixed regenerating resin-basalt ber composite is paved on the lower layer of steel slag-rubber particle composition, and the hot-press molding process is used to ensure the tight bonding and molding quality between the composite upper and lower layers, wherein the hot-pressing process is carried out at a temperature of 80-100°C and a pressure of 0.5-1.0 MPa, and the temperature and the pressure are maintained for 10-15 minutes. The silane coupling agent is sprayed between the lower layer of steel slagrubber particle composition and the upper layer of regenerating resin-basalt ber composition to enhance interface bonding. A spraying amount of the silane coupling agent is 0.3-0.5 kg / mz, and the silane coupling agent is naturally dried for 3060 minutes after spraying, so that the coupling agent forms the uniform bonding layer at an interface. The foundation bed is formed by assembling the plurality of prefabricated concrete modules, the upper surface of each module is provided with the positioning groove, and these positioning grooves are communicated with each other to form the continuous guide groove, which is convenient for mounting and positioning the caisson main body. The nano-silica-modied epoxy-resin-based mortar is poured into a gap between the modules, and the mortar has high strength and good durability, which can effectively ll the gap between the modules, thus enhancing the overall stability of the foundation bed. The caisson main body is inserted and xed into the guide groove of the foundation bed through the positioning plate at the bottom portion to ensure the accuracy and stability of the caisson during mounting. The caisson is lled with the multi-graded steel slag fragments, which can not only provide good support, but also effectively absorb impact energy, thus reducing the vibration of the caisson during use. The top portion of the caisson is provided with the castinplace concrete breast wall to enhance the wind and wave resistance of the caisson. The 3-5 independent air bag chambers distributed transversely are pre-embedded in the bottom plate of the caisson, each chamber is connected with the top water injection system through the electric proportion adjusting valve, and the buoyancy force of the caisson is adjusted through water injection and drainage, so as to adapt to different water level and load changes. The buoyancy force control system comprises the water pressure sensor, the inclinometer, the ultrasonic liquid level meter and the Doppler current meter mounted on the caisson, which monitor the draft, the inclination angle, the water level, the water ow velocity and other parameters of the caisson in real time. The edge computing chip calculates the dynamic water injection quantity of each air bag chamber according to the real-time data, and controls the electric proportion adjusting valve to execute water injection, thus ensuring the stability and safety of the caisson under different working conditions. The ecological permeable pipeline network is arranged at the junction between the sidewall of the caisson and the base, the inner diameter of the pipeline is 2200 mm, the inner wall is provided with the diatomite-zeolite composite coating, and the coating has a good adsorption performance, so that impurities and pollutants in seawater can be effectively ltered and puried. The tail end of the pipeline extends to the backlled region and is provided with the ecological lter module, which further enhances an ecological permeable function, thus promoting the protection of marine ecological environment. The prestress wire towing system comprises the multiple groups of prestress wires transversely penetrating through the reserved pore channels of adjacent caisson main bodies, wherein the tail ends of the prestress wires are connected with the mechanical friction damper. The damper dynamically adjusts the damping force according to the GPS positioning data, and the damping force is calculated by the formula F d=F base+k-Ax 'VojjSet, wherein Fbase=10 kN, k=0.8 kN-s / m, Ax is the transverse offset, and va_ezis the offset velocity. The towing system can effectively reduce the transverse swing of the caisson during towing, thus improving the safety and stability of towing. The positioning plate is a platelike structure made of high-strength steel, which is matched with the guide groove of the foundation bed in shape, a size of the positioning plate is accurately calculated according to the weight and stability requirements of the caisson, and a surface of the positioning plate is subjected to anticorrosion treatment, such as antirust paint coating or hot-dip galvanizing, so as to improve the durability. When the positioning plate is preembedded in the bottom portion of the caisson, it is necessary to ensure that a position of the positioning plate is accurate and correct, and the positioning plate is aligned with the guide groove of foundation bed. The guide groove is arranged on the upper surface of the prefabricatedconcrete module of the foundation bed, which is t with the positioning plate in shape and size. A length, a width and a depth of the guide groove are determined according to the size of the positioning plate, and a surface of the guide groove has moderate roughness, which can not only ensure the smooth insertion of the positioning plate, but also provide sufcient friction to prevent the caisson from horizontal displacement during use. The guide groove is molded once on the prefabricated concrete module by a highprecision mould to ensure that the position and the size are accurate. When the caisson is mounted, highprecision measuring equipment such as the GPS positioning system and the total station is used to accurately guide the hoisting of the caisson, so that the positioning plate at the bottom portion of the caisson is aligned with the guide groove of the foundation bed, and the caisson is slowly lowered, so that the positioning plate is smoothly embedded in the guide groove. With the cooperation of the positioning plate and the guide groove, the caisson can be quickly and accurately mounted on the foundation bed to ensure the construction efciency and mounting accuracy. The 3-5 independent air bag chambers are transversely distributed in the bottom plate of the caisson. According to a length, a width and a height of the caisson, and the buoyancy force and stability requirements, a position and a size of the air bag chamber are reasonably determined. Generally, the air bag chambers are evenly distributed along the length direction of the caisson, and a volume of each air bag chamber is determined by mechanical calculation to meet the buoyancy force adjustment requirements of the caisson under different working conditions. The air bag chamber is arranged in advance in a manufacturing process of the caisson. A template of the air bag chamber is mounted in a corresponding position on the bottom plate of the caisson, and then concrete is poured to ensure that the air bag chamber and the bottom plate of the caisson form a whole. An inner wall of the air bag chamber needs to be subjected to a waterproof and anti-corrosive treatment, such as waterproof paint coating or waterproof membrane attachment. Each air bag chamber is connected with the top water injection system through the electric proportion adjusting valve, a selected model and a mounting position of the electric proportion adjusting valve need to be accurately calculated and designed according to the volume and water injection velocity requirements of the air bag chamber, so as to realize the accurate control over the water injection quantity of each air bag chamber. Through the buoyancy force control system, according to the realtime draft, inclination angle, water ow velocity and other sensor data of the caisson, the dynamic water injection quantity of each air bag chamber is calculated by the edge computing chip according to a preset control algorithm, and the electric proportion adjusting valve is controlled to execute water injection or drainage. In this way, a plurality of air bags can work together, and the buoyancy force is exibly adjusted according to actual working conditions of the caisson, thus ensuring the stability and safety of the caisson under different loads and hydrological conditions. In another technical solution, according to the caisson wharf, a water injection quantity and a pressure of each chamber are adjusted, specically: a draft is acquired in real time by the water pressure sensor, an inclination angle is acquired by the inclinometer, an external water ow velocity is acquired by the Doppler current meter, and a water level of each chamber is monitored by the ultrasonic liquid level meter; according to a relationship curve between a remaining volume of the air bag chamber (excluding a lling volume of the steel slag) and a buoyancy force, a total buoyancy force required to maintain balance is calculated in combination with a current draft; the demand of total buoyancy force is equally divided according to a number of chambers to obtain a basic water injection quantity Qbase; if the inclination angle is 0>1o and 055° an actual water injection quantity of a chamber on a sinking side is: Qadj=QbaseX(l+0.10); and an actual water injection quantity of a chamber on a oating side is: Qadj=Qbase><(l0.10), and an adjustment period is 10 seconds; if the external water ow velocity is V>1 m / s and V53 m / s, and the inclination angle is 055°, a water injection quantity of a chamber in a direction of upstream face is corrected as follows: Qadj=Qbase><(l+0.l -(Vl)-0), and the adjustment period is 5 seconds; and when the inclination angle is 0>5O and a difference between a highest water level and a lowest water level in the caisson is >30 cm, and the situation lasts for more than 30 seconds, a water injection valve is closed, and a spare buoyancy force air bag is started to inate at an ination pressure of P=0.2+0.05X(0-5) Mpa, wherein a maximum ination pressure is not greater than 0.4 MPa. In the above technical solution, a draft of the caisson is acquired in real time by the water pressure sensor, an inclination angle is acquired by the inclinometer, an external water ow velocity is acquired by the Doppler current meter, and a water level of each air bag chamber is monitored by the ultrasonic liquid level meter. The data of the sensors provide real-time basis for the adjustment of the buoyancy force control system. According to the relationship curve between the remaining volume of the air bag chamber (excluding the lling volume of the steel slag) and the buoyancy force, the total buoyancy force required to maintain balance is calculated in combination with the current draft. The relationship curve is obtained by experimental calibration, which can accurately reect a relationship between the remaining volume of the air bag chamber and the buoyancy force. The demand of total buoyancy force is equally divided according to the number of chambers to obtain the basic water injection quantity Qbase as a basic reference value of water injection in each chamber. When the inclination angle 0 ranges from 1° to 5°, the actual water injection quantity of the chamber on the sinking side is: QbaseX(l+0.l0); and the actual water injection quantity of the chamber on the oating side is: QbaseX(l-0.l0), and the adjustment period is 10 seconds. This adjustment method can effectively balance the inclination of the caisson to ensure the stability in water. When the external water ow velocity V ranges from 1 m / s to 3 m / s, and the inclination angle is 055°, the water injection quantity of the chamber in the direction of upstream face is corrected as follows: QbaseX(l+0.l-(Vl)-0), and the adjustment period is 5 seconds. The correction takes into account a comprehensive inuence of the water ow velocity and the inclination angle, so that the buoyancy force can be adjusted more accurately to adapt to complex water conditions. When the inclination angle is 0>5°and the difference between the highest water level and the lowest water level in the caisson is >30 cm, and the situation lasts for more than 30 seconds, the water injection valve is closed, and the spare buoyancy force air bag is started to inate at the ination pressure of P=0.2+0.05><(05) Mpa, wherein the maximum ination pressure is not greater than 0.4 MPa. This emergency measure can quickly adjust the buoyancy force of the caisson under extreme conditions to prevent the caisson from being excessively inclined or sunk, thus ensuring the safety of the wharf. In another technical solution, according to the caisson wharf, water pressure sensors at four comers of the caisson are symmetrically mounted at a height of 0.5 m from the bottom plate, with a measuring range of 02 MPa and a sampling frequency of 220 Hz; the inclinometer is mounted at a part 0.3 m above a vertical line of gravity center of the caisson, with a measuring range of i20° and a resolution of 0.005°; the Doppler current meter is arranged on a side wall of upstream face of the caisson at a height of 0.8-1.2 m from a water surface, with a measuring range of 0-5 m / s and an accuracy of 10.05 m / s; and the ultrasonic liquid level meters are longitudinally arranged at intervals of 2 m, and a dual-probe redundancy design is adopted, with a data fusion error of 53:] cm. In the above technical solution, the water pressure sensors at the four corners of the caisson are symmetrically mounted at the height of 0.5 m from the bottom plate, and this symmetrical mounting method can ensure that draft data acquired by the sensors are representative, thus avoiding data deviation caused by improper mounting position. The measuring range of the water pressure sensor is 02 MPa, and the sampling frequency is 220 Hz, so that a change of draft of the caisson can be accurately monitored in real time, thus providing reliable data support for the adjustment of the buoyancy force control system. The inclinometer is mounted at the part 0.3 m above the vertical line of the gravity center of the caisson, and the overall inclination of the caisson can be accurately reected in this mounting position, thus avoiding a measurement error caused by local deformation or vibration. The measuring range of the inclinometer is i20°, and the resolution is 0.005°, so that the inclination angle of the caisson can be accurately measured, thus providing high-precision data for the adjustment of the buoyancy force control system. The Doppler current meter is mounted on the side wall of upstream face of the caisson at the height of 0.8-1.2 m from the water surface, and the external water ow velocity can be effectively monitored in this mounting position, thus avoiding an equipment damage caused by the impact of the water ow. The measuring range of the water ow velocity is 05 m / s, and the accuracy is i0.05m / s, so that water ow velocity information can be accurately acquired, thus providing important environmental parameters for the adjustment of the buoyancy force control system. The ultrasonic liquid level meters are longitudinally arranged at intervals of 2 m, and the dualprobe redundancy design is adopted, with the data fusion error of 5i1 cm. This arrangement method and redundant design can ensure the accuracy and reliability of liquid level monitoring, and even if one probe fails, the other probe can still work normally, thus ensuring the continuity and integrity of data. Through a data fusion technology, the data of the two probes are comprehensively processed, which further improves the accuracy of liquid level monitoring, thus providing accurate water level information for the adjustment of the buoyancy force control system. In another technical solution, according to the caisson wharf, a generation method for the buoyancy force relationship curve comprises: calibrating a relationship between the remaining volume of the air bag chamber and the buoyancy force by an experiment: F=pg(Vmm / 0.65 Vs / ag), wherein p is a density of seawater (p=1025 kg / m3), g is an acceleration of gravity, Vw is a total volume of the chamber (m3), and Vs'lag is a lling volume of the steel slag (m3); and establishing a buoyancy force-water injection quantity mapping table, wherein a resolution of the water injection quantity is 55 L, and a linear interpolation error is <l%. In the above technical solution, the relationship between the remaining volume of the air bag chamber and the buoyancy force is calibrated through an experiment. During the experiment, the air bag cambers are lled with the steel slags according to different volumes, and corresponding buoyancy forces are measured, so as to obtain the relationship curve between the buoyancy force and the remaining volume. Parameters in the formula F=pg(Vwzal 0.65 Vslag) are determined through the experiment, wherein p is the density of seawater (1025 kg / m3), g is the acceleration of gravity, Vr; is the total volume of the chamber, and Vslag is the lling volume of the steel slag. A large number of experimental data ensure the accuracy and reliability of the buoyancy force relationship curve. Based on the buoyancy force relationship curve obtained from the experiment, the buoyancy force-water injection quantity mapping table is established. A resolution of the water injection quantity in the mapping table is 55 L, so that the water injection quantity of each air bag chamber can be accurately controlled. The linear interpolation error is <l%, which ensures that an error between the water injection quantity calculated by interpolation and an actual demand value is within an acceptable range in practical application, thus improving the accuracy and stability of buoyancy force control. In another technical solution, according to the caisson wharf, a control algorithm of the edge computing chip further comprises fuzzy PID adjustment: an inclination angle error eFdactuaiQtarget and an error change rate Aeg / At are dened as input variables; and a dynamic weight distribution formula is: Kjew = Kga - <1 + 0.2 %) Wherein, K£a59=08 is a basic proportion coefcient, Kÿew=05 is a corrected proportion coefcient, and weight distribution is updated every 2 control periods; the control period is 5100 ms, an overshoot is <2%, a steady-state error is 50.1°. In the above technical solution, the fuzzy PID adjustment is introduced into the control algorithm of the edge computing chip to improve the response velocity and stability of the buoyancy force control system. The inclination angle error 6=6actual_6target and the error change rate Aeg / At are dened as the input variables, and an inclination state of the caisson is comprehensively evaluated by the two variables, thus providing comprehensive information for the control algorithm. In the dynamic weight distribution formula, the basic proportion coefcient is 0.8, the corrected proportion coefcient is 0.5, and the weight distribution is updated every 2 control periods. This dynamic weight distribution method can exibly adjust the control parameters according to the actual inclination of the caisson, thus improving the adaptability and effectiveness of the control algorithm. The control period is 5100 ms, so that it is ensured that the control system can quickly respond to a change of inclination of the caisson and adjust the water injection quantity in time to maintain balance of the caisson. The overshoot is <2%, and the steady-state error is 501°, so that it is indicated that the control system can quickly reach a steady state during adjustment, and a nal steady-state error is extremely small, thus ensuring the stability and safety of the caisson under various working conditions. In another technical solution, according to the caisson wharf, a preparation method for the ecological permeable pipeline network comprises: transversely drilling by a diamond drill bit to form the pipeline network, wherein a drilling diameter is 5-8 mm larger than a designed diameter of the pipeline; when the inner wall of the pipeline is provided with the diatomitezeolite composite coating, spraying in three stages: spraying a diatomite slurry according to a thickness of 0.51 mm in a rst stage, wherein a particle size of diatomite is 550 um; spraying a zeoliteepoxy resin mixture according to a thickness of ll.5 mm in a second stage, wherein a mass ratio of zeolite to resin is 3: 1; spraying a hydrophobic modier according to a thickness of 0.2-0.5 mm in a third stage, wherein a spraying pressure is 0.3-0.4 MPa; and carrying out ultraviolet curing on each layer sprayed, wherein a wavelength is 365 nm and an irradiation intensity is 23 0mW / cm2. In the above technical solution, according to the preparation of the ecological permeable pipeline network, the transverse drilling is carried out by the diamond drill bit to form the pipeline network rst, wherein the drilling diameter is 5-8 mm larger than the designed diameter of the pipeline, so that the molding quality and size accuracy of the pipeline are ensured. This drilling method can effectively reduce a damage to the wall of the pipeline, thus improving the durability of the pipeline. When the inner wall of the pipeline is provided with the diatomite-zeolite composite coating, the spraying is carried out in three stages. The diatomite slurry is sprayed according to the thickness of 0.5-1 mm in the rst stage, wherein the particle size of diatomite is 550 um, and the ne particle size can ensure the uniformity and adsorption performance of the coating. The zeolite-epoxy resin mixture is sprayed according to the thickness of l-l.5 mm in the second stage, wherein the mass ratio of zeolite to resin is 3: 1, and the ratio can give full play to the adsorption performance of the zeolite and the bonding performance of the epoxy resin, thus enhancing a comprehensive performance of the coating. The hydrophobic modier is sprayed according to the thickness of 0.20.5 mm in the third stage, wherein the spraying pressure is 0.3-0.4 MPa, and the durability and anti-pollution ability of the coating are further improved by spraying the hydrophobic modier. The ultraviolet curing is carried out on each layer sprayed, wherein the wavelength is 365 nm and the irradiation intensity is 230 mW / cmZ. The ultraviolet curing treatment can quickly cure the coating, so as to improve the construction efciency, and ensure the curing quality and adhesion of the coating at the same time, thus prolonging the service life of the pipeline. In another technical solution, according to the caisson wharf, the prestress wire towing system further comprises: a nano graphenepolyurethane composite coating arranged on a surface of the wire, wherein a coating thickness is 0.2-0.3 mm and a friction coefcient is 50.15; and the mechanical friction damper has threelevel adjustment modes: in a rst level mode: when Ax50.1 m, Fd :FbaselkAXVqSet; in a second level mode: when 0.1 m<Ax50.3 m, F d =1 .2F base+1 .5k -Ax 'Voffset; in a third level mode: when Ax>0.3 m, F d =1 .5Fbase+2k -Ax 'Vqet+N, Wherein ,u=0.2, and N is a normal pressure; and mode switching response time is 5500 ms, and a damping force output error is 5i5%. In the above technical solution, the nano graphenepolyurethane composite coating is arranged on the surface of the wire of the prestress wire towing system, wherein the coating thickness is 0.2-0.3 mm and the friction coefcient is 50.15. This coating can effectively reduce the friction of the wire during towing, thus reducing energy consumption, and improve the corrosion resistance and service life of wire at the same time. The mechanical friction damper has threelevel adjustment modes, and the adjustment modes are automatically switched according to the transverse offset Ax of the caisson. The rst level mode is suitable for the situation of Ax50.1 m, and at this time, FdZFbasei'k'AlX'l / qset, so that small-amplitude transverse swing can be effectively controlled. The second level mode is suitable for the situation of 0.1 m<Ax50.3 m, and at this time, Fd =] .2Fbase+1 .5k-Ax %]jset, so that moderate-amplitude transverse swing is further suppressed by increasing the damping force. The third level mode is suitable for the situation of Ax>0.3 m, and at this time, Fd =] .5F base+2k Ax 'vomet+yN, wherein u=0.2, and N is the normal pressure, so that largeamplitude transverse swing is effectively controlled through a greater damping force, thus ensuring the safety of towing. The mode switching response time is 5500 ms, and the damping force output error is 5i5%, so that it is indicated that the damper can quickly respond to a change of transverse deviation of the caisson and adjust the damping force in time, and an error between an output damping force and a calculated value is very small, thus ensuring the stability and reliability of the towing system. In another technical solution, the caisson wharf further comprises a mechanical strain early warning device, which consists of a plurality of mechanical strain gauges and a linkage alarm mechanism, wherein the strain gauges are embedded in a junction between the upper layer of the regenerating resin-basalt ber composition and the lower layer of the base, and connected with an audible and visual alarm outside the caisson through a lever mechanism; when a local strain of the base exceeds 80% of a design value, the strain gauges trigger the lever to shift, and the linkage alarm sends out an audible and visual signal; and a nominal pressure range of the strain gauges is 0-5 MPa, a displacement transmission error is 5i1 mm, and alarm response time is 52 seconds. In the above technical solution, the mechanical strain early warning device consists of the plurality of mechanical strain gauges and the linkage alarm mechanism. The strain gauges are embedded in the junction between the upper layer of the regenerating resin-basalt ber composition and the lower layer of the base, and the local strain of the base can be accurately monitored in this mounting position, thus nding a potential safety hazard in time. The strain gauges are connected with the audible and visual alarm outside the caisson through the lever mechanism, and when the local strain of the base exceeds 80% of the design value, the strain gauges trigger the lever to shift, and the linkage alarm sends out the audible and visual signal. This early warning mechanism can remind an operator to take corresponding measures in time to prevent accidents when there is excessive strain of the base. The nominal pressure range of the strain gauges is 0-5 MPa, the displacement transmission error is 511 mm, and the alarm response time is 52 seconds. These parameters ensure the high accuracy and quick response of the strain early warning device, so that an alarm is quickly given when the strain of the base exceeds a safety threshold, thus ensuring the safe operation of the wharf. In another technical solution, the caisson wharf further comprises a passive tide adjustment structure, which consists of a tide gate and a oat valve arranged on a side wall of the caisson, wherein the tide gate is connected with the side wall of the caisson through a hinge, and the oat valve is mounted at awater inlet of the air bag chamber; the tide gate is automatically opened and closed according to a change of water level: when the water level rises, the oat valve oats up to open the water inlet, and the tide gate is turned outwardly to guide a water ow into the chamber; and when the water level descends, the oat valve sinks to close the water inlet, and the tide gate is retracted inwardly to reduce an impact of the water ow; and an opening angle AOL of the tide gate is linearly related to the water level Ah, Ad=k~Ah (k is a proportion coefcient), a maximum opening angle is 60°, and a density of the oat valve is 1.2-1.5 times that of seawater. In the above technical solution, the passive tide adjustment structure consists of the tide gate and the oat valve arranged on the side wall of the caisson. The tide gate is connected with the side wall of the caisson through the hinge, and the oat valve is mounted at the water inlet of the air bag chamber. This structure can automatically adjust opening and closing states according to a change of water level to adapt to a change of tide. When the water level rises, the oat valve oats up to open the water inlet, and the tidal gate is turned outwardly to guide the water ow into the chamber, so as to increase the buoyancy force of the caisson, thus preventing the caisson from oating excessively due to the rising water level. When the water level descends, the oat valve sinks to close the water inlet, and the tide gate is retracted inwardly to reduce the impact of the water ow, thus preventing the caisson from sinking excessively due to the descending water level. The opening angle Act of the tide gate is linearly related to the water level Ah, Aa=k-Ah, wherein k is the proportion coefcient, and the maximum opening angle is 60°. This linear relationship ensures that the opening angle of the tide gate can accurately reect the change of water level, thus realizing accurate buoyancy force adjustment. The density of the oat valve is 1.21.5 times that of seawater. This density design enables the oat valve to oat up and down sensitively when the water level changes, so as to ensure the timely opening and closing of the water inlet, thus improving the response velocity and adjustment accuracy of the passive tide adjustment structure. The present invention provides a construction method for the caisson wharf, which comprises the following steps: Sl. construction of base: lling a gradient steel slag-rubber particle composite into the circulating steel skeleton in a layered mode to form the lower layer, compacting the lower layer by vibration rolling and then spraying the silane coupling agent; and paving the upper layer of regenerating resin-basalt ber composition, wherein a temperature of hot-press molding is 80-100°C, and a volume content of basalt ber is 15-20%; S2. mounting of foundation bed: positioning the prefabricated concrete modules by a total station, and injecting the nano-silica-modied epoxy-resin-based mortar by high-pressure grouting, wherein a grouting pressure is 0.30.5 MPa; S3. mounting of caisson: hoisting the caisson main body to the foundation bed, and guiding the positioning plate by GPS to be embedded into the guide groove; and lling the multi-graded steel slag fragments and compacting the lled steel slag fragments by vibration, and pre-embedding the prestress wires and electrifying and heating the pre-embedded prestress wires to 40°C to activate the coatings; S4. arrangement of permeable structure: transversely drilling to form the ecological permeable pipeline network, and carrying out plasma spraying of a photocatalytic T102 coating according to a thickness of 50-80 um; SS. Regulationof towing system: applying an initial tension by the mechanical friction damper, and dynamically adjusting a damping force of a magnetorheological uid based on GPS data, wherein a towing velocity is 50.5 m / s; S6. dynamic control of water injection: carrying out PID closed-loop control on the water injection quantity of each chamber, and maintaining the inclination angle to be 51° and the water level difference between adjacent chambers to be 5 10 cm; S7. monitoring and correction: monitoring a strain of the base by a distributed optical ber sensing network, and triggering an early warning and adjusting a water injection rate when the strain exceeds a limit; and verifying a grouting compactness degree by ultrasonic imaging, and replenishing the slurry to a region with a grouting compactness degree of <95%; and S8. mounting of tide structure: mounting the tide gate and the oat valve on the side wall of the caisson, and debugging a linear relationship between the opening angle and the water level. In the above technical solution, during specic construction of the caisson wharf, the base is constructed rst. The gradient steel slag-rubber particle composite is lled into the circulating steel skeleton in the layered mode to form the lower layer, the lower layer is compacted by Vibration rolling, and then the silane coupling agent is sprayed to enhance the bonding between the layers. The upper layer of regenerating resin-basalt ber composition is paved, wherein the temperature of hot-press molding is controlled at 80-100°C, and the volume content of basalt ber is kept at 15-20%, thus ensuring the material strength and durability of the upper layer. When the foundation bed is mounted, the prefabricated concrete modules are positioned by the total station, and the nano-silica-modied epoxy-resin-based mortar is injected by highpressure grouting, wherein the grouting pressure is controlled at 0.3-0.5 MPa, thus ensuring the tight connection between the modules and the overall stability of the foundation bed. During the mounting of the caisson, the positioning plate is guided by GPS to be embedded into the guide groove of the foundation bed, thus ensuring the accurate mounting of the caisson. The multi-graded steel slag fragments are lled and compacted by vibration, and the prestress wires are pre-embedded and electried and heated to 40°C to activate the coatings, thus improving the performance and durability of the wires. When the permeable structure is arranged, the transverse drilling is carried out to form the ecological permeable pipeline network, and the plasma spraying of the photocatalytic T102 coating is carried out according to the thickness controlled at 50-80 um, thus enhancing the water permeability and durability of the pipeline. When the towing system is regulated, the initial tension is applied by the mechanical friction damper, and the damping force of the magnetorheological uid is dynamically adjusted based on GPS data, wherein the towing velocity is controlled at 50.5 m / s, thus ensuring the stability and safety of towing. When the water injection is dynamically controlled, the PID closedloop control is carried out on the water injection quantity of each chamber, and the inclination angle is maintained to be 51° and the water level difference between adjacent chambers is maintained to be 510 cm, thus ensuring the balance and stability of the caisson during water injection. In the stage of monitoring and correction, the strain of the base is monitored by the distributed optical ber sensing network, and the early warning is triggered and the water injection rate is adjusted when the strain exceeds the limit, thus preventing the base from having excessive strain. The grouting compactness degree is veried by ultrasonic imaging, and the slurry is replenished to the region with the grouting compactness degree of <95%, thus ensuring the stability of the foundation bed. Finally, the tide structure is mounted, wherein the tide gate and the oat valve are mounted on the side wall of the caisson, and the linear relationship between the opening angle and the water level is debugged, so as to ensure that the passive tide adjustment structure can work normally to adapt to a change of tide, thus improving the adaptability and safety of the caisson wharf. The equipment quantity and the processing scale described herein are used to simplify the description of the present invention. The application, modication and variation of the present invention are obvious to those skilled in the art. Although the implementation of the present invention has been disclosed above, it is not limited to the applications listed in the specication and the embodiments, and can be fully applied to various elds suitable for the present invention, and additional modications can be easily implemented by those skilled in the art. Therefore, the present invention is not limited to the specic details and illustrations shown and described herein without departing from the general concept dened by the claims and the equivalent scope.

Claims

1. Caisson Quay, comprising: a base comprising a sub-layer consisting of a steel slag-rubber particle composition is formed and a top layer is formed by a regenerative resin-basalt fiber composition formed, where the sub-layer is filled in a circulation steel skeleton, and where a silane coupling agent is sprayed between the layers to improve interface binding; a foundation bed, which is applied to an upper surface of the top layer and is formed by assembling a multitude of prefabricated concrete modules, whereby a top surface of each module is provided with a positioning groove, wherein the multitude of positioning grooves are communicated with each other to provide a continuous to form a guide groove, and in which a nano-silica-modified epoxy resin-based mortar is poured into a space between the modules; a caisson main body, which is provided with a positioning plate on a base part to be inserted and fixed into the guide groove of the foundation bed, where the caisson is filled with multi-graded steel slag fragments in an interior and is provided with a cast-in-place concrete breast wall on a top section, in which 3 - 5 independent air sac chambers are transversely distributed pre-embedded in a base plate of the caisson, and where each chamber is connected to a top water injection system via an electric proportioning valve; a float force control system, which includes a water pressure sensor, an inclinometer, an ultrasonic includes a liquid level meter and a Doppler flow meter, which are mounted on the caisson, whereby the float control system provides a dynamic amount of water injection from each air pocket chamber calculates via a peripheral calculation chip based on real-time data from the sensor and the electric proportion control valve controls to perform water injection; an ecologically permeable pipeline network, which is installed at a junction between a side wall of the caisson and the base, with an inner diameter of a pipeline 2 200 mm, where an inner wall of the pipeline is provided with a diatomite zeolite composite coating, and where a tail of the pipeline extends to a back-filled area and is equipped with an ecological filter module; and a pre-tension wire drawing system, which includes several groups of pre-tension wires that penetrate through reserved pore channels of adjacent caisson main bodies, where the tails of the prestressing wires are connected to a mechanical friction damper, and in which the damper dynamically adjusts a damping force according to GPS positioning data, using a calculation formula as follows: Fd :Fbaseik'AX'Vajfset; where Fbase=10 kN, k=0.8 kN-s / m, Ax is a transverse offset (unit: m), and Vqfjset is a offset speed is.

2. Caisson quay according to claim 1, characterised in that an amount of water injection and a pressure of each chamber can be adjusted, speciek: a real-time depth is obtained by means of the water pressure sensor, a slope angle is obtained by means of the inclinometer, an external water flow velocity is obtained by means of the Doppler current meter, and a water level of each room is monitored by the ultrasonic liquid level gauge; according to a relationship curve between a residual volume of the air sac chamber and a float force, a total float force required to maintain equilibrium, is calculated in combination with a current draft; the demand for the total float force is distributed equally according to a number of chambers to to obtain a basic amount of water injection Qbase; if the slope angle 0 > 1° and 0 S 5°, an actual amount of water injection of a chamber on a sinking side: Qadj=Qbase><(1+0.16); and an actual amount of water injection of a room on a Float side is: Qadj=QbaseX(l_0.19), and an adjustment period is 10 seconds; if the external water flow velocity V > 1 m / s and V 5 is 3 m / s, and the slope angle is 0 5 5°, a quantity of water injection from a chamber in a direction of an upstream plane is corrected as follows: Qadj=Qbase><(1+0.1-(V1)-6), and the adjustment period is 5 seconds; and when the slope angle is 0 > 5° and a difference between a highest water level and a lowest water level in the caisson is > 30 cm and the situation lasts longer than 30 seconds, a water injection valve is closed and a reserve float air bag is started to fill up blowing at an inlet pressure of P=0.2+0.05><(05) Mpa, where a maximum inlet pressure is not is greater than 0.4 MPa.

3. Caisson quay according to claim 2, characterised in that water pressure sensors in four corners of the caisson are symmetrically mounted on a height of 0.5 m from the base plate, with a measuring range of 0 2 MPa and a sampling frequency of Z 20 Hz; The inclinometer is mounted at a height of 0.3 m above a vertical line of the center of gravity of the caisson, with a measuring range of i20° and a resolution of 0.005 °; The Doppler current meter is mounted on a side wall of the upstream face of the caisson at a height of 0.8 - 1.2 m from a water surface, with a measuring range of 0 - 5 m / s and an accuracy of i0.05 m / s; and the ultrasonic liquid level meters are mounted at intervals in the longitudinal direction of 2 m and a dual probe redundancy design is applied, with a data fusion error of S il cm.

4. Caisson quay according to claim 2, characterised in that a generation method for the float force relationship curve includes: calibrating a relationship between the residual volume of the air sac chamber and the float force by an experiment: F=pg( Vtotal_0.65 Vslag), where p is a density of seawater is (p=1025 kg / m3), g is an acceleration due to gravity, V is a total volume of the room (m3), and Vÿlag a filling volume of the steel slag (m3); and establishing a mapping table of the float force and the amount of water injection, where the resolution of the water injection amount is S 5 L and a linear interpolation error < 1% is.

5. Caisson quay according to claim 2, characterised in that a control algorithm of the edge calculation chip further fuzzy PID adjustment includes: a slope angle error eFÛacmaiÛtarget and an error change percentage Aeg / At are defined as input variables; and a dynamic weight distribution formula is: Kjew = Kg (1 + 0.2 %) where Kga = 0.8 is a basic proportion coefficient, Kÿew = 0.5 is a corrected proportion coefficient and weight distribution are updated every 2 control periods; and the control period is S 100 ms, an overshoot is < 2% and a steady state error is 5 0.1°.

6. Caisson quay according to claim 1, characterised in that a preparation method for the ecological permeable pipeline network includes: the transverse drilling by means of a diamond drill to form the pipeline network, where a bore diameter is 5 - 8 mm larger than a designed diameter of the pipeline; when the inner wall of the pipeline is provided with the diatomite-zeolite composite coating, spraying in three stages: spraying a diatomite slurry to a thickness of 0.5 - 1 mm in a first stage, where a particle size of diatomite S is 50 um; spraying a zeolite-epoxy resin mixture to a thickness of 1 - 1.5 mm in a second phase, where the mass ratio of zeolite to resin is 3:1; spraying a hydrophobic modifier with a thickness of 0.2 - 0.5 mm in a third phase, where the spray pressure is 0.3 - 0.4 MPa; and Performing an ultraviolet curing on each sprayed layer, taking a golength 365 nm is and an irradiance intensity Z is 30 rnW / cm2.

7. Caisson quay according to claim 1, characterised in that it pre-tension wire drawing system further includes: a nanographene-polyurethane composite coating applied to a surface of the wire, with a coating thickness of 0.2 - 0.3 mm and a coefficient of friction of 5 0.15; and The mechanical friction damper has three levels of adjustment modes: in a first-level mode: at Ax50.lm, Fd :FbaseikAX'VofjSet; in a second level mode: at 0.1 m <axso3 m, fd="1.2Fbase+1.5k'AX'Vofjset;" in een modus van derde niveau: bij ax>0.3 m, F d =1.5Fbase+2k-Ax-vosez+ / cN, where u=0.2, and N is a normal pressure; and mode switching response time S is 500 ms, and a damping force output error S is 15%.

8. Caisson quay according to claim 1, characterised in that the caisson quay further comprises a mechanical stress early warning device, which consists of a plurality of mechanical tension meters and a torque alarm mechanism, the tension meters being embedded in a junction between the top layer of the regeneration resin basalt fiber composite and the underlayer of the base, and are connected via a lever mechanism to an audible and visual alarm outside the caisson; when a local stress of the base exceeds 80% of a design value, the tension meters activate the lever to shift, and the torque alarm sounds an audible and sends out a visual signal; and a nominal pressure range of the strain gauges is 0 - 5 MPa, a displacement transfer error £ il mm is and an alarm response time S is 2 seconds.

9. Caisson quay according to claim 1, characterised in that the caisson quay further comprises a passive tidal control structure, which consists of a tidal gate and a float valve which are mounted on a side wall of the caisson, with the tidal gate accessible via a hinge is connected to the side wall of the caisson and the float valve is mounted to a water inlet of the air sac chamber; the tidal gate is automatically opened and closed according to a change of Water level: When the water level rises, the float valve floats up to close the water inlet. open and the tide gate is rotated outward to allow a flow of water into the chamber. lead; and when the water level drops, the float valve sinks to close the water inlet and the tidal gate is retracted inward to avoid an impact from the water current reduce; and an opening angle Aa of the tidal gate is linearly related to the water level Ah, Aa=k-Ah (k is a proportion coefficient), a maximum opening angle is 60°, and a density of the Float Valve is 1.2 - 1.5 times that of seawater.

10. Construction method for a caisson quay, comprising the following steps: Sl. construction of the base: filling a gradient steel slag-rubber particle composite in the circulation steel skeleton in a layered mode to form the sub-base, compacting the base layer by vibrating rollers and then spraying the silane coupling agent; the paving of the top layer of regenerative resin-basalt fiber composition, whereby a The temperature of hot pressing molding is 80-100°C, and the volume content of basalt fiber is 15 - 20%; S2. mounting the foundation bed: positioning the prefabricated concrete modules through a total station, and spraying the nano-silica-modified epoxy resin-based mortar by high pressure injection, where an injection pressure is 0.3 - 0.5 MPa; S3. assembling the caisson: hoisting the caisson main body to the foundation bed, and guiding the positioning plate by means of GPS to fit into the guide groove are embedded; and filling of the multi-graded steel slag fragments and the compression of the filled steel slag fragments by vibration, and pre-embedding of the prestressing wires and the electrification and heating of the pre-embedded pre-stressed wires at 40°C to activate the coatings; S4. Applying the permeable structure: drilling transversely to ensure ecological to form a permeable pipeline network and perform plasma spraying of a photocatalytic TiOz coating with a thickness of 50 - 80 um; S5. Adjustment of the tension system: applying an initial tension by the mechanical friction damper, and dynamically adjusting a damping force of a magnetorheological fluid based on GPS data, with a pulling velocity of 5 0.5 m / s is; S6. Dynamic control of water injection: Performing PID closed-loop control on the amount of water injection of each chamber, and maintaining the slope angle to S 10 are and the water level difference between adjacent rooms to be 5 10 cm; S7. Monitoring and correction: monitoring a base voltage by a distributed network for optical fiber sensors, and activating an early warning and adjusting a water injection rate when the voltage reaches a limit exceeds; and verifying an injection compactness degree by means of ultrasonic imaging, and replenishing the slurry to an area with an injection compaction degree of < 95%; and SS. mounting the tidal structure: mounting the tidal gate and the float valve on the side wall of the caisson, and debugging a linear relationship between the opening angle and the water level. 33221121131 FIG.1