67 results about "Soft clay" patented technology

The invention provides a pipe jacking construction method for a soft clay layer pipeline, which comprises the following steps: S1, arranging a working well and a receiving well at the starting point and the terminal point of the pipeline through open caisson construction, S2, splicing guide rails at the well bottoms of the working well and the receiving well, and installing a pipe jacking machine head and a jacking oil cylinder into the working well by using hoisting equipment; s3, the front end of the pipe jacking machine head is jacked into a hole inlet through a jacking oil cylinder, and S4, the pipe jacking machine head enters a soil layer after entering the hole, and jacking control and deviation correction are conducted according to parameters of a pipe jacking hydraulic system; s5, when the pipe jacking machine head is close to the well wall of the receiving well, the pipe jacking machine head penetrates through the outlet hole at a time; and S6, after acceptance inspection is qualified, the pipe jacking machine head and the guide rail are detached, and then the pipe jacking machine head is hoisted out. Jacking control and deviation correction are carried out according to parameters of the pipe jacking hydraulic system, deviation of the pipe jacking machine head can be found and corrected in time, it is ensured that the jacking direction of a pipe joint is accurate, and the construction quality is improved.

The present invention discloses a formula for high-temperature lightweight mullite bricks and a firing process thereof, relating to the technical field of refractory materials. According to the invention, by weight, the following components are included: 40-44 parts of alumina, 18-24 parts of cyanite, 10-15 parts of soft clay, 18-23 parts of high-temperature mullite, 25-35 parts of sawdust, 15-23 parts of burn-out polyethylene balls and a reinforcing agent; the sawdust is used to form microscopic air channels and reinforce the pores; the sintering temperature of the mixture is 1200°C-1800°C; the reinforcing agent is quartz powder; to solve the problem of the low strength of the lightweight heat-insulating refractory materials prepared by the burn-out method.

The invention provides a pipe jacking working well construction method for soft clay geology. The pipe jacking working well construction method comprises the steps that S1, replacement filling and cushion layer construction are conducted in a construction area corresponding to a working well; s2, a formwork is erected for blade foot pouring, S3, excavation is conducted from the middle of the open caisson to the periphery in a layered mode, the open caisson is filled with backfill sand for back pressure after final sinking, and well wall heightening is conducted after backfill; s4, after the backfill sand is cleaned, sinking and heightening are carried out for multiple times until excavation is carried out to a preset elevation; s5, riprapping and leveling the well bottom, and then moving from the well edge to the middle for layered pouring to form a back cover; and S6, after water pumping is completed, reinforcing steel bars are bound, concrete is poured, and a bottom plate is formed. The mode that symmetrical excavation is conducted and soil bodies are reserved along the periphery of a blade foot to form a soil embankment is adopted, the well wall evenly sinks under the action of self weight, and the problems that the well wall inclines and cracks are caused by uneven sinking are avoided.

The invention discloses a soft clay electrochemical reinforcing device and method. The device comprises a power source, an anode, a cathode and a middle grouting pipe. A cation exchange membrane is arranged in the area, close to the cathode, of the to-be-reinforced soil body, only allows cations to migrate from the interior of the soil body to the cathode, and physically prevents anions generated by the cathode electrolytic reaction from reversely diffusing to the soil body; and the cation exchange membrane wraps the outer surface of the cathode or is arranged in the soil body around the cathode as an independent interlayer to form an ion filtering interface completely surrounding the cathode. According to the method, a selectively permeable cation exchange membrane is arranged at the interface of a cathode and a soil body, and a step-by-step grouting process of first anode grouting and then middle grouting pipe grouting is combined, so that the displacement of unit energy consumption is remarkably improved under the same voltage, the settlement amount of the soil body in a cathode area is increased by nearly 4 times, and the construction efficiency is improved. The engineering problem that an anode is hard and a cathode is soft in traditional electroosmosis is solved.

This invention relates to the field of nearshore engineering pile extraction technology, and discloses an auxiliary pile extraction device and construction method for soft clay strata in nearshore areas. The device includes at least two hollow annular high-pressure water chamber components, spaced vertically along the axial direction of the pile. Each hollow annular high-pressure water chamber component includes two oppositely arranged hollow arc-shaped high-pressure water chambers and riveting bolts. This auxiliary pile extraction device and construction method for soft clay strata in nearshore areas utilizes multiple high-pressure nozzles arranged on the upper, outer, and lower surfaces of the hollow annular high-pressure water chamber components. The two hollow annular high-pressure water chambers are connected by riveting bolts to form a circular structure around the pile. This allows high-pressure water to be sprayed directionally in three directions around the pile, achieving targeted erosion and drag reduction in specific areas around the pile. This solves the problems of traditional indiscriminate disturbance methods that easily lead to excessive disturbance of soil in non-target areas, instability of surrounding strata, and significant waste of drag-reducing media.

The invention discloses a soft clay cyclic reconsolidation characteristic test method and device, and the method mainly comprises the steps: applying an axial cyclic load, and dynamically adjusting the lateral boundary constraint condition of a sample according to an independent control logic to simulate an actual stress path; synchronously collecting axial deformation, a lateral strain field, pore water pressure and an acoustic emission signal of the sample; and then characteristic parameters are calculated in real time based on the multi-physics field data, and a test process is automatically decided according to a preset criterion. According to the soft clay cyclic reconsolidation characteristic test method and device provided by the invention, the field boundary condition can be simulated more truly, and multidimensional state monitoring and intelligent test control from macroscopic to microscopic can be realized.

The present application relates to the field of ground settlement prediction, and provides a time effect analysis method for ground settlement induced by foundation pit excavation in soft clay area, comprising: determining the time required for foundation pit construction under all working conditions and the retaining wall side displacement curve; determining the soil parameters according to the Boltzmann viscoelastic foundation model; obtaining the viscous settlement of all working conditions by using the Boltzmann viscoelastic foundation model; setting t=0 and the boundary condition as the retaining wall side displacement curve of all working conditions to obtain the elastic settlement under different working conditions; setting the boundary condition as the retaining wall side displacement curve when the bottom plate strength is formed to obtain the viscous settlement of the soil outside the pit after the bottom plate strength is formed; and summing the elastic and viscous settlement to obtain the ground settlement of the to-be-solved arbitrary working condition. The present application overcomes the problem that the existing theoretical method cannot consider the time effect of the soil, thereby leading to the problem that the prediction of the ground settlement is not safe, and also considers the ground settlement after the bottom plate strength is formed without depending on the retaining wall side displacement, which is more engineering significant and has good popularization and application value.

The invention discloses a method for predicting a traction distance of a structural soft clay landslide. The method comprises the following steps: acquiring physical and mechanical parameters of landslide soil and landslide topographic data; calculating structural soft clay judgment parameters based on the physical and mechanical parameters of the soil, and judging whether the landslide soil is structural soft clay or not according to the structural soft clay judgment parameters; if it is judged that the landslide is structural soft clay, active thrust PA, 1 and shear resistance R are calculated on the basis of landslide soil physical and mechanical parameters and landslide topographic data, and whether landslide will occur or not is judged through the active thrust PA, 1 and the shear resistance R; if the landslide is judged to occur, calculating the length LF of the horizontal part of the final failure surface of the landslide; and calculating a landslide traction distance LR based on the final landslide failure surface horizontal part length LF. According to the method for predicting the traction distance of the structural soft clay landslide, the precision of landslide triggering and traction distance prediction can be remarkably improved.

This invention discloses a support structure and method for deep foundation pits in saturated soft clay areas without internal support. The support structure includes SWM piles, continuously arranged along the edge of the foundation pit. The steel sections inserted into the SWM piles are recyclable steel sections, and the tops of the steel sections extend beyond the tops of the SWM piles. A reinforced concrete cap beam is horizontally enclosed on the SWM piles and fixedly connected to the extension ends of each steel section to connect all the steel sections into a whole. Multiple prestressed jet grouting anchors are set along the edge of the foundation pit. Each prestressed jet grouting anchor has an interconnected free section and an anchoring section. The free section is used for fixed connection with the reinforced concrete cap beam, and the anchoring section extends downward in an inclined direction and is inserted into the soil outside the foundation pit. This invention overcomes the drawbacks of traditional foundation pit support technology by combining SWM piles, prestressed jet grouting anchors, and reinforced concrete cap beams.

The invention discloses a model test device and method for soil layer and tunnel time response caused by foundation pit excavation, and relates to the technical field of geotechnical engineering, tunnel and underground space engineering. The method is based on the saturated silty clay with soft soil property, so that the research result is more suitable for the coastal region of China and the Yangtze River basin in which the soft clay is widely distributed, and the method is superior to the design of an existing model test mainly aiming at a sand soil layer or an unsaturated soil layer; based on the fact that the foundation pit excavation mode in the prior art is mostly shovel excavation, the method has great influence on the test result, and the integral excavation method of the flexible freight bag can reflect the influence of the unloading factor of the soil body in the foundation pit to the greatest extent; according to the experimental device, the change rule of the tunnel displacement, the hyperstatic pore water pressure of the surrounding soil body and the soil pressure along with time can be obtained, the dangerous displacement generated by foundation pit excavation can be found, and the time interval when the tunnel displacement reaches the dangerous value can be found.

The invention relates to a remolded saturated soft clay cutting ring sample preparation device and a use method. The device comprises a pressurizing module and a remolding assembly, the pressurizing module comprises a load controller, a lifting platform, a pressurizing cover and a counter-force frame; the remolding assembly comprises an extension cylinder, a consolidation cylinder and a base; the consolidation cylinder is composed of two semicircular cylinder structures, and an interlayer is arranged in the cylinder wall of the consolidation cylinder; one ends of the semicircular cylinders are connected through hinges, the other ends of the semicircular cylinders are connected with convex blocks, and the convex blocks are connected together through bolts; and the fixed cylinder bottom is locked with the base. The device has the beneficial effects that the lifting platform is controlled by the load controller to carry out graded loading on the slurry, moisture in the slurry is squeezed out, a numerical control pressurization system is adopted to replace a traditional weight adding system to provide pressure, and manual labor is reduced; the soil used for preparing the soil sample is less, so that the waste of the test soil is avoided; it is guaranteed that the soil sample cannot overflow from the joint of the consolidation cylinder and the extension cylinder during extrusion, the integrity of the soil sample is guaranteed, and the accuracy of subsequent tests is improved.

The invention provides a test system for determining strength parameters of marine shallow soft clay. The test system comprises a loading device, a simulation controller and a data processing module, an S-shaped tension and compression sensor, a floating joint, a tungsten steel probe rod and a probe are arranged above the n-shaped bracket, and a pore pressure sensor is arranged in the probe; the simulation controller is used for controlling the servo motor to rotate so as to drive the linear module to move up and down, so that the sensor base is driven to move up and down, and the excess pore water pressure value in the soil body at the position of the probe is measured; the system disclosed by the invention can accurately measure parameters such as pore pressure in a ship-based on-site environment, is portable, low in cost, high in automation degree and strong in stress-strain control compatibility, and can truly and reliably measure parameters such as strength, deformation and pore pressure of the marine soft clay.

The invention relates to the technical field of soft foundation stiff composite piles, in particular to a soft foundation stiff composite pile and a construction technology thereof.The soft foundation stiff composite pile comprises a limiting support, a steel pipe, a cement soil mixing pile and a prefabricated concrete pipe pile, the limiting support is installed at the top of the cement soil mixing pile, and the steel pipe is installed in the middle of the limiting support; and a prefabricated concrete pipe pile is mounted in the middle of the steel pipe. The limiting support and the steel pipe are arranged, it is guaranteed that the steel pipe is located in the center of the cement-soil pile through the steel plate and the limiting plate, the steel pipe cannot deflect during pressing-in, the precast concrete pipe pile is driven in cement soil through the steel pipe, large energy does not need to be consumed, and the cement-soil mixing pile outside the steel pipe cannot be extruded; the problem that large excess pore water pressure is generated in soft clay around the pile due to the extrusion effect is solved. The plastic drainage plate and the vacuum pipe are arranged, and redundant water in the cement soil mixing pile is absorbed through the plastic drainage plate and the vacuum pipe, so that the cement soil mixing pile is not affected by soil moisture of soft soil.

The invention provides a method for preparing a saturated soft clay sample containing a structure, which comprises the following steps: selecting a pre-consolidation mold, respectively and sequentially adhering filter paper and permeable cotton cloth on the surfaces of a pressure head and a base of a mold cylinder, and pouring a certain mass of slurry into the pre-consolidation mold filled with the structure; placing the pre-consolidation mold in a consolidation apparatus, covering the consolidation apparatus with a cover plate, and applying set pre-consolidation stress in a grading manner until a test stop standard is reached; and pushing the soil body containing the structure out along the bottom to obtain the saturated soft clay sample containing the structure. The initial saturation degree and uniformity of the prepared soil body sample can be guaranteed, the density of the prepared soil body can be relatively accurately controlled, and good preconditions are provided for data stability and scientificity of a subsequent saturated soft clay-structure interface test.

This invention relates to the fields of water conservancy and hydropower construction and soil and water conservation, and discloses a ditch-type spoil heap, including a ditch, a spoil retaining dam, and an in-reservoir storage area. The spoil retaining dam is located downstream of the ditch, and the in-reservoir storage area includes a first storage area and a second storage area. The first storage area is located upstream of the spoil retaining dam and can be used for storing rocky spoil; the second storage area is located upstream of the first storage area and can be used for storing soil spoil. During spoil heaping, the upstream slope of the spoil retaining dam forms the first storage area for storing rocky spoil, and the upstream side of the first storage area forms the second storage area for storing soft clay spoil. This achieves large-capacity storage of soft clay, improves the space utilization rate of the spoil heap and the capacity for disposing of engineering spoil. By adopting a classified and zoned storage method, the risk of siltation and water environment deterioration downstream of the second storage area is reduced, thus controlling soil erosion at its source. This invention also provides a spoil heaping method.

The application relates to the technical field of clay bricks, and discloses a dense clay brick and a preparation method thereof. The dense clay brick comprises 100 parts by weight of soft clay, 25-40 parts by weight of red mud, 20-32 parts by weight of fly ash, 4-8 parts by weight of a sulphurous acid paper pulp waste liquid binder and 0.1-0.6 parts by weight of modified carbon fibers. The surface of the modified carbon fibers contains a large number of double quaternary ammonium salt cation structures, can have electrostatic interaction with anions on the surface of the clay, enhances the interfacial bonding performance between the carbon fibers and the clay, makes the inside of the clay brick more compact, improves the bulk density and compactness of the clay brick, is beneficial to reducing the water absorption rate and improving the water resistance and waterproof performance. Moreover, the carbon fibers have large strength, high modulus and strong compression resistance, the interfacial bonding performance between the modified carbon fibers and the clay is better, and the compression strength and the bending strength of the clay brick are improved.

The present application relates to pile foundation detection technical field, specifically to a kind of pile foundation detection equipment, including conical ring, still including detection ring, rotating ring, intelligent sensor, locking assembly, pressure sensor, control module and fixed ring, driving mechanism is installed in the detection ring inside.The present application is judged limiting state by pressure sensor and control module after locking assembly is kept concentric limit after opening and pile foundation, then remove driving mechanism restriction, and according to the mode that the probe end of intelligent sensor is tightly attached to the outer periphery of pile foundation by the way that the corresponding number of turns is rotated to corresponding direction by driving mechanism according to pressure sensor feedback value, solve the problem that when the mud soft clay layer area in the southeast coastal area and inland lake sediment plain etc. of our country is detected, the mud containing clay particles seriously interfere with ultrasonic wave when using acoustic transmission method to detect pile foundation, affect pile foundation detection precision and detection efficiency.

The reciprocating rotary bidirectional drill bit suitable for soft mudstone layer drilling of the application uniformly sets three wing groove on the drill bit body, and designs the cutting wing as a crown structure, which forms a bidirectional drill bit with both ends being tapered when combined together, so as to ensure the stability and accuracy of the guidance in the drilling process and prevent the drill bit from deviating from the preset drilling track. The cutting teeth on the cutting wing can effectively cut the rock layer when the drill bit is pulled out in the reverse direction, thereby reducing the risk of drill bit burying caused by soft rock layer hole collapse. Meanwhile, the waist hole design is adopted for the drainage groove, which has the advantages of large water discharge, small water pressure shot to the hole wall, large flushing area and the like, so that the powder discharge is more smooth, and the risk of drill bit sticking is reduced.

The invention discloses an aluminum ash-based light mixing pile and a construction method thereof, and relates to the technical field of traffic engineering foundation treatment. The aluminum ash-based light mixing pile is of a porous structure formed by mixing and stirring light solidified slurry and soft clay. The raw materials of the light curing slurry comprise cement and secondary aluminum ash, and the addition amounts of the cement and the secondary aluminum ash are respectively 10-15% and 5-10% of the weight of the soft clay. The light curing slurry is adopted for treating the soft foundation to form the stirring pile, and the permeability and compressibility of the stirring pile can be effectively improved while the strength of the stirring pile is guaranteed. The invention further discloses a construction method of the aluminum ash-based light mixing pile, the component characteristics of the secondary aluminum ash are fully utilized, the secondary aluminum ash serves as one of main raw materials, the characteristic that the secondary aluminum ash generates ammonia gas through hydration reaction is utilized, pores are provided for the mixing pile, the self weight can be reduced, drainage can be accelerated, and the mixing pile has certain compressibility.

The invention discloses a suction pile reinforcing device and a reinforcing method thereof. The suction pile reinforcing device comprises a suction pile of which the bottom is in an open state and the top is provided with a sealing cover, a plurality of groups of slurry spraying assemblies which are distributed in the suction pile and on the periphery of the suction pile in an annular array manner and can spray slurry in multiple directions, and a protective cylinder which is fixedly connected with the suction pile and is used for protecting the slurry spraying assemblies, the slurry supply assembly is communicated with the slurry spraying assembly and used for providing slurry, and the lifting assembly is installed at the top of the slurry spraying assembly and used for lifting the slurry spraying assembly. The guniting assemblies in the suction pile and on the periphery of the suction pile are symmetrically arranged, and the protection barrel is of a C-shaped tubular structure with an opening in one side. The slurry spraying assemblies are arranged inside and on the periphery of the suction pile at the same time, the slurry spraying assemblies spray slurry at a high speed to continuously cut soft clay and move upwards at the same time, uniform slurry spraying is achieved, the overall bearing capacity can be improved, the problem that the suction pile cannot sink in place can be solved through the internal slurry spraying assemblies, and the overall bearing capacity is further improved.

The invention belongs to the technical field of basic engineering data processing, and discloses a soft clay compression index rapid prediction method and system based on an equivalent concept, a terminal and a storage medium, and the method comprises the steps: obtaining model parameters of any soft clay based on an indoor compression test method, and determining a soft clay equivalent compression model according to the model parameters; acquiring basic physical characteristic parameters of the soft clay to be detected; substituting the basic physical characteristic parameters into the equivalent compression model of the soft clay, and solving to obtain a compression index of the to-be-tested soft clay; and outputting the compression index of the soft clay to be detected. According to the method, reasonable prediction of the compression characteristics of different types of soft clay under the conditions of large-range initial moisture content and stress level can be realized only by one conventional compression test, the prediction cost of the compression characteristics of the soft clay is remarkably reduced, and the prediction precision of the compression characteristics of the soft clay is improved.

The invention discloses a test device for simulating multi-direction and multi-angle loading of a suction anchor foundation in a centrifugal model test, which comprises a test box, a bracket is arranged at the top of the test box, transparent soft clay is arranged at the bottom of the test box, a suction anchor test sample is arranged in the transparent soft clay, and an annular guide rail is connected below the bracket; at least two groups of loading devices are arranged on the annular guide rail, movable fixed pulleys are mounted on the loading devices, anchor points on the suction anchor test sample are connected with steel wire ropes, the other ends of the steel wire ropes penetrate through the fixed pulleys and are connected with loading motors in the loading devices, and the loading devices are connected with the annular guide rail through movable parts. At least three layers of evenly-distributed tracing soil belts different from the soil body in color are arranged in the transparent soft clay under the support, the tracing soil belts are located within the buried depth range of the suction anchor, and the distribution condition of the tracing soil belts is recorded through a miniature camera. According to the invention, the overall displacement deformation condition of the suction anchor under different combination conditions can be more intuitively observed, and important test data is provided for the research of the suction anchor in practical engineering.

The invention discloses a soft clay stirring device, and belongs to the technical field of soft clay stirring, the soft clay stirring device comprises a stirring barrel, a feeding bin is fixedly arranged on the top of the stirring barrel, a first motor is fixedly arranged on one side of the feeding bin on the top of the stirring barrel, and a material shaking mechanism is arranged in the feeding bin; a first motor is fixedly arranged on one side of the stirring barrel and is in transmission connection with the material shaking mechanism, a second motor is fixedly arranged on one side of the stirring barrel, a stirring mechanism is rotationally arranged in the stirring barrel and is in transmission connection with the second motor, and a discharging bin is fixedly arranged at the bottom of the stirring barrel; through optimal design of a feeding mechanism, a stirring mechanism, a sealing mechanism, a discharging mechanism and the like and in combination with precise regulation and control of an intelligent control system, the problems that when a traditional stirring device treats soft clay, stirring is insufficient, blocking is prone to occurring, efficiency is low, and operation is tedious are effectively solved, and the quality, efficiency and intelligent level of soft clay stirring operation are remarkably improved.

This application discloses a method, apparatus, equipment, and storage medium for correcting the undrained shear strength of soft clay obtained from a self-drilling pressuremeter test. The method includes collecting undrained shear strength and pore pressure dissipation data of soft clay at multiple test points obtained through self-drilling pressuremeter tests, and undrained shear strength of soft clay at multiple test points obtained through vane tests. For the current test point, the degree to which the undrained shear strength of the soft clay at the current test point is underestimated is determined, and the consolidation state parameters of the current test point are determined. Based on the correspondence between the degree of underestimation of the undrained shear strength of the soft clay and the consolidation state parameters, a correction coefficient for the undrained shear strength of the soft clay at the target test point is determined. This correction coefficient is used to correct the undrained shear strength of the soft clay at the target test point obtained through the self-drilling pressuremeter test. This method can improve the accuracy of the undrained shear strength of soft clay obtained from self-drilling pressuremeter tests.

The application discloses a kind of calculation methods for soft soil strength growth of preloading precompression foundation treatment, belong to the technical field of foundation treatment, the method of the present application innovatively uses the change of moisture content before and after preloading precompression drainage to obtain the growth of soil strength, without considering the consolidation state of soil, solve the limitation problem that current industry standard is only applicable to normal consolidation saturated soft clay for the strength growth calculation method of foundation soil under preloading, and is not applicable to overconsolidated soil and underconsolidated soil strength growth calculation;Solve the defect that current specification method only considers the strength growth caused by soil drainage consolidation under the action of compressive stress, but cannot consider the strength growth caused by shrinkage, can more accurately evaluate the treatment effect of preloading precompression method;Avoid the defect that current specification method can only consider the underestimated strength growth generated by one-dimensional consolidation of foundation and the cumbersome work of consolidation degree calculation, and is worth popularization and application.

This invention relates to the field of biomass cement technology and discloses a method for solidifying soft clay using activated magnesium oxide microbial slurry in synergistic CO2 co-solidification. The method includes: mixing a bacterial solution with urea to obtain a pre-hydrolyzed mixture; the bacterial solution containing urease-producing microorganisms; mixing and stirring the pre-hydrolyzed mixture, activated magnesium oxide, and soft clay sediment, while simultaneously introducing carbon dioxide gas during the mixing and stirring process; and curing after stirring is completed. This invention effectively overcomes the limitations of single biological carbonization or single gas carbonization by introducing a dual carbonization mechanism of urea pre-hydrolysis and short-term CO2 gas carbonization, synergistically improving reaction efficiency and ultimately enhancing the solidification effect of soft clay sediments.

The invention discloses a solid waste low-carbon flow-state solidified soil dry-mixed curing agent as well as a preparation method and application thereof, relates to a building material belonging to the field of solid waste recycling and geotechnical engineering materials, and aims to provide a solid waste low-carbon flow-state solidified soil dry-mixed curing agent which meets engineering requirements of fertilizer groove backfilling, cavity filling and the like, really realizes treatment of waste with waste, realizes resource utilization of low-carbon zero cement, and has a good application prospect. The curing agent has remarkable environmental benefits and engineering applicability. The solid waste low-carbon flow-state solidified soil dry mixing type curing agent is prepared from the following components in parts by weight: 30 to 45 parts of modified converter steel slag powder, 25 to 35 parts of activated municipal waste incineration bottom ash and 4 to 8 parts of acidified bentonite. The preparation method of the curing agent comprises the following steps: respectively preparing the three solid waste-based functional components, weighing according to the ratio, uniformly mixing with the solid dispersing agent in a closed mixer, bagging, sealing, and storing in a damp-proof manner. During construction, the curing agent is mixed with soft clay according to the mass ratio of 20%-35% of the dry weight of the on-site soft clay to form the flow-state solidified soil with the self-leveling performance, and the unconfined compressive strength within 28 days reaches 0.4-0.8 Mpa.

The present invention discloses an electroosmosis grouting device and an electroosmosis-biocementation synergistic reinforcement method for soft clay. The electroosmosis grouting device includes a soil model box, an electroosmosis device and a grouting device. The electroosmosis device includes a power supply, a first electrode and a second electrode arranged around the first electrode. Soft clay is contained between the first electrode and the second electrode. The first electrode is hollow inside to form a first channel. The inner side wall of the soil model box is a porous side wall, and a second channel is formed between the double-layer side walls. Both electrodes are porous electrodes. The grouting device includes a first circulation grouting device and a second circulation grouting device. The present invention first performs electroosmosis drainage through the electroosmosis device, and then, under the start-up and regulation of the electroosmosis device, injects biological slurry and cementing liquid into the soft clay in opposite directions through the first circulation grouting device and the second circulation grouting device respectively to synergistically reinforce the soft clay. The present invention improves the grouting efficiency and greatly increases the strength and bearing capacity of the reinforced soft clay.

The embodiment of the invention provides a suction type caisson foundation cycle bearing analysis method, system and equipment and a medium. The method comprises the following steps: establishing a cyclic creep element model; the cyclic creep element model is used for describing the accumulated plastic strain of saturated soft clay; introducing dynamic deflection stress and a softening coefficient into the cyclic creep element model to obtain an equivalent cyclic creep model; the equivalent cyclic creep model is popularized to be three-dimensional, and a finite element model of the cyclic uplift bearing capacity of the suction caisson foundation under the cyclic load effect is established; and the finite element model is used for analyzing and calculating the cyclic uplift bearing capacity of the suction caisson foundation. According to the embodiment of the invention, the equivalent cyclic creep model of the soft clay is established by considering the static deflection stress and dynamic deflection stress factors and combining the creep element model, the equivalent cyclic creep model is popularized to three dimensions, a finite element subprogram is developed, and a finite element analysis method for the cyclic uplift bearing capacity of the suction caisson foundation under the cyclic load effect is established.