384results about "Foundation repair" patented technology

The invention discloses a urease-producing microorganism induced calcium carbonate deposition solution for foundation reinforcement and a preparation method and application thereof, and belongs to the technical field of foundation reinforcement. The urease-producing microorganism induced calcium carbonate deposition solution comprises a bacterial solution, a cementing solution and a sodium citrate solution, the bacterial liquid comprises bacteria capable of generating urease and citrobacter freundii. Sodium citrate in the urease-producing microorganism induced calcium carbonate deposition solution can chelate free calcium ions in advance, the concentration of the free calcium ions is reduced, the risk of precipitation at an injection port in the single-phase injection process is eliminated, and the solution can smoothly permeate into a deep layer; citrobacter freundii produces acid through metabolism and utilizes citric acid radicals through metabolism to ensure gradual release of calcium ions, so that uniform deposition of calcium carbonate is triggered. Through the synergistic effect of sodium citrate chelated calcium ions and citrobacter freundii metabolism, the solution can be uniformly distributed in the soil sample, and the problem of uniformity of single-phase perfusion is successfully solved.

The invention discloses a concrete structure crack control repairing method under unfavorable geological conditions, and relates to the technical field of concrete structure crack repairing, and the method comprises the following steps: S1, crack pretreatment: adopting a laser-ultrasonic wave composite cleaning technology to remove impurities of cracks, and combining a three-dimensional CT scanning technology to mark crack three-dimensional distribution and risk grade; s2, intelligent grouting repair; s3, surface nano coating; s4, releasing and reinforcing stress; s5, enhancing biomineralization; s6, installing an intelligent monitoring system; s7, layered grouting treatment; and S8, regularly maintaining and dynamically repairing. Through the synergistic effect of the step S1, the step S2 and the step S3, accurate control over the whole process from crack cleaning, filling to surface protection is achieved, compared with traditional high-pressure water cleaning, the surface roughness is improved, and meanwhile an accurate foundation is laid for follow-up repairing; through the steps S4, S6 and S8, a closed-loop maintenance system with active stress regulation and control, real-time monitoring and autonomous healing is constructed, a microcapsule self-repairing agent is released to a high-risk area, and the self-healing efficiency is improved.

The invention discloses an old station building and railway foundation reinforcing method, and belongs to the technical field of building construction. The method comprises the following steps that construction preparation is conducted, specifically, a fence is arranged in a platform construction area, and pipelines are arranged; driving fender posts; a foundation pit is excavated, and net spraying treatment is conducted on the exposed face of the fender post; the soil layer below the pit bottom is subjected to grouting reinforcement; grouting reinforcement is conducted on the lower portion of the railway track; reinforcing beams and reinforcing rafts are constructed on the tops of the existing pile foundations; and the platform is recovered according to the partition construction mode, and the fences are dismantled. By means of the combined technology of fender post supporting, pit bottom grouting, reinforcing beam raft reinforcing and line station track grouting, all-directional reinforcing of the station building structure, the foundation and foundation soil is achieved, the integrity and the anti-settling capacity of the structure are remarkably improved, the operation influence is reduced to the minimum through subarea construction, and the construction period is shortened. The method is especially suitable for reinforcement engineering of pile foundation old station buildings.

The invention discloses a plugging particle, a preparation method, application and a grouting material, the plugging particle is of a core-shell structure and comprises a force-bearing inner core, the force-bearing inner core is coated with an expansion functional layer, and the expansion functional layer is coated with a delayed hydrogel outer film layer; wherein the inner core is made of one or more of quartz sand, kaolin and inorganic fibers; the expansion functional layer comprises modified bentonite and a super absorbent polymer; the delayed hydrogel outer film layer comprises a water-soluble film; the particle size of the blocking particles is 0.5 to 2.5 mm; through material structure optimization and response mechanism design of the functional plugging particles and the special grouting liquid, the automatic plugging function in the grouting process without mechanical triggering, a chemical expanding agent and a complex plugging device is achieved; and the method is suitable for scenes with high requirements on plugging precision, construction efficiency and structural stability in complex rock mass crack grouting engineering.

The invention discloses a geogrid and EICP synergistically reinforced soil embankment structure and a construction method, and relates to the technical field of soil embankment structures. Comprising a pavement base layer, an embankment bearing layer and a natural soil foundation layer, and the natural soil foundation layer is used as a soil embankment structure support and is arranged at the bottommost layer; the pavement base layer is used for bearing an upper driving load and uniformly transferring the upper driving load to the embankment bearing layer below; and the embankment bearing layer is used for bearing the upper load transmitted by the pavement base layer. The engineering performance is improved through the multi-layer synergistic effect, the core reinforcing layer is of an innovative space grid structure and is composed of a prefabricated geogrid, a grid support arranged in the inclined direction and a rigid stress plate frame, a three-dimensional force transmission network is formed, the limitation of a traditional reinforcing method is broken through, and the engineering performance is improved. In addition, the grating support is arranged at a specific angle, the structural rigidity is guaranteed, and the stress concentration phenomenon is avoided.

The invention relates to the field of flow-state solidified soil testing devices, and particularly discloses construction equipment and a construction process for scouring and repairing flow-state solidified soil for an offshore wind turbine foundation. Comprising an overwater carrying carrier, and a material mixing pool, a water adding stirring pool, a material conveying pipeline, a material conveying pump, a slurry conveying mechanism, a flow state solidified soil scouring performance testing device, a solidified soil rotational rheometer, a fluidity test bed, a detection material taking mechanism and a control center which are arranged on the carrier. The construction device is a complete technical system covering performance integrated testing, site construction real-time detection and complex environment coupling simulation, the dual problems that research and development of a flow-state solidified soil material is lagged and site repair quality control is insufficient are effectively solved, and the safety and reliability of offshore wind turbine foundation scouring repair engineering are guaranteed.

The invention relates to the technical field of pipe gallery crack repairing, in particular to an underground pipe gallery deformation joint leakage repairing method. An underground pipe gallery deformation joint leakage repairing method comprises the following steps that original filler in a deformation joint is removed, and the deformation joint is filled with a backing slurry blocking material; mixing the high-ductility self-repairing waterproof mortar with water to prepare high-ductility self-repairing waterproof slurry, and filling the deformation joint with the high-ductility self-repairing waterproof slurry; the high-ductility polymer joint sealing mortar and water are mixed to prepare high-ductility polymer joint sealing slurry, the high-ductility polymer joint sealing slurry is smeared to the inner surface of the deformation joint, and a cavity is formed; a silane modified polyether material is poured into the cavity; and a W-shaped stainless steel plate is installed, polymer waterproof paint is brushed on the periphery of the deformation joint, and a waterproof sealing layer is formed. The three-in-one composite waterproof structure is adopted, the high-ductility self-repairing waterproof mortar, the W-shaped stainless steel plate and the silane modified polyether rubber are combined to construct an inner-blocking, middle-preventing and outer-sealing composite waterproof system, and the waterproof performance of the deformation joint in the dynamic deformation environment is remarkably improved.

The invention relates to the technical field of settlement post-cast strips, in particular to a pre-closed advanced water stop grouting device and method.The pre-closed advanced water stop grouting device comprises a basement top plate, a bottom plate, a cover plate and a grouting sleeve and further comprises a self-adaptive adjusting assembly; the self-adaptive adjusting assembly comprises an inner cylinder, an outer cylinder, a spring, a sealing ring and a pre-tightening force adjusting component, and when the building body settles, the cover plate descends to drive the outer cylinder to descend, and then the spring is extruded; the springs on the two sides generate reverse buffering force after being compressed, the force is transmitted to the cover plate through the outer cylinder, the internal stress of the cover plate caused by differential settlement is effectively counteracted, and it is avoided that a sealing structure at the joint of the cover plate and a basement top plate cracks due to rigid pulling; and after the settlement is stable, pressure grouting is performed through the grouting sleeve, so that the problems of cracking of the cover plate and failure of sealing structures such as a sealant and a waterproof coiled material due to rigid pulling are solved.

The utility model relates to the field of rock mass restoration, in particular to a rock mass restoration and reinforcement device for broken rock mass of stone cultural relics, and provides the following scheme aiming at the problem that the rock mass restoration and reinforcement device in the prior art has excessive intervention on a rock mass structure: the rock mass restoration and reinforcement device comprises a vertical supporting mechanism, the first jacks are fixed to the top face of the mounting plate, the supporting columns are detachably mounted on the bottom face of the mounting plate, and a mounting groove is formed in one end of the mounting plate; the side edge supporting mechanism comprises a movable plate movably arranged in the mounting groove, a fixed plate fixed to the top face of the movable plate, a second jack hinged to the outer wall of the side, close to the mounting plate, of the fixed plate, and a telescopic rod mounted at the output end of the second jack. The bottom and the side edges of a damaged rock mass can be conveniently supported, interference and damage to the rock mass are reduced, the whole device can be conveniently stored and transferred, and great convenience is brought to outdoor use of a user.

The invention provides an underground space communication reserved hole wall body later-stage hole communication construction method, an existing prefabricated wall body comprises a main body structure area and a reinforcing structure area, and a water stop opening method is arranged on the butt joint face of the existing prefabricated wall body, and the method comprises the steps that firstly, an automatic lock catch water stop system is installed in the reinforcing structure area of the existing prefabricated wall body, and an automatic lock catch water stop system is installed in the reinforcing structure area of the existing prefabricated wall body; a spherical rubber water stop belt is placed in the water stop opening; secondly, a to-be-built basement soil body is excavated, and to-be-built basement floors are sequentially constructed from bottom to top; 3, taking out the wall body of the hole, and arranging a vertical support at the same time; constructing a first reinforcing column on the left side of the hole; the reserved hole wall body and the existing prefabricated wall body are in butt joint and locked; sequentially taking out each wall body unit, additionally arranging a vertical support, and arranging a second reinforcing column; and fourthly, the reinforcing structure area is constructed, the existing basement floor, the existing prefabricated wall and the basement floor to be built are connected, and the lintels, the first reinforcing columns and the second reinforcing columns form a complete communicating hole.

The application discloses a grouting reinforcing device for bridge foundation piles and belongs to the technical field of reinforcing equipment. The device mainly aims at the problem that the existing products need to be cooperated by multiple people and their structures are easy to be damaged and maintained during actual operation, and provides the following technical scheme. The device comprises a bottom plate for bottom laying and a side protection mechanism for foundation pile reinforcement. The bottom plate and the side protection mechanism are assisted and supported by a supporting mechanism. The side protection mechanism is composed of a side plate, an extension plate and a limiting assembly. The device can be operated by one person instead of multiple people during height applicability adjustment, reduces operation difficulty and labor cost. The setting of the locking assembly not only guarantees the convenience of operation during angle adjustment, but also can share the supporting force after angle adjustment, guarantees the service life of the product, reduces the maintenance cost, and further improves the practicality of the product.

The application discloses a kind of pile foundation buckling prevention methods for reinforcing local depth liquefied soil between piles, the method comprises the following steps: step one, reinforcement scheme theoretical calculation;Step two, site construction.The application uses buckling-restrained brace to connect foundation pile to form a reinforcing body, which constrains lateral deformation of foundation pile, improves overall lateral stiffness and reduces differential settlement of foundation pile;Combined jack is used to transmit force to segmented pressure rod, and buckling-restrained brace is segmented and gradually driven into fixed depth, with lower resistance from soil body and accurate positioning.The application does not require large construction equipment, solves the problem of narrow space and unsuitable construction for existing buildings, and does not produce waste residue, waste, noise pollution and other environmental pollution, and is environmentally friendly construction.The void left by buckling-restrained brace construction is backfilled with gravel and injected with reinforcement slurry, which can improve the bearing capacity of foundation soil and speed up the drainage speed of liquefied soil layer, finally achieving simultaneous reinforcement of pile foundation and foundation soil, achieving two goals at once.

The utility model discloses a soft soil area building foundation reinforcing structure which comprises a foundation body, a reinforcing frame is fixedly connected to the center of the top of the foundation body, supporting plates are fixedly connected to the positions, close to the top and the bottom, in the reinforcing frame, a reinforcing seat is fixedly connected to the top of the supporting plate arranged close to the top, and the reinforcing seat is fixedly connected to the bottom of the reinforcing frame. Side plates are arranged at the positions, close to the two sides, between the two supporting plates, and four side end reinforcing rods are fixedly connected to the sides, opposite to each other, of the two side plates. According to the foundation reinforcing structure for the building foundation in the soft soil area, by designing the reinforcing structure comprising the foundation body, the reinforcing frame, the supporting plate, the reinforcing base, the side plates and the top end plate, the overall structure is effectively simplified, and the complex connection and matching requirements among components are reduced; assembly can be completed more quickly and accurately, dependence on the construction technology level is reduced, and therefore the construction efficiency and the stability of a reinforcing structure are effectively improved.

The invention discloses a construction method for dislocation correction of a retaining wall, the retaining wall comprises a wall body, a bottom plate and an antiskid tenon, the wall body is arranged on the bottom plate, the bottom plate is arranged on a horizontal base, the bottom plate comprises a wall toe plate and a wall heel plate which are integrally formed, the antiskid tenon is arranged at the bottom of the wall heel plate of the bottom plate and is arranged in the base, and the antiskid tenon is arranged on the bottom of the wall heel plate of the bottom plate. An expansion joint is formed at the joint of the retaining wall section I and the retaining wall section II which are constructed in sections; comprising the following construction steps: step 1, construction preparation; secondly, earth excavation is conducted on the soil body at the position of the staggered retaining wall; thirdly, cofferdam water pumping is conducted in the construction section area; fourthly, a limiting plate I section is poured; fifthly, a hydraulic jack is installed, and the staggered retaining wall is jacked back by the hydraulic jack; sixthly, the hydraulic jack is dismantled, and a limiting plate section II is poured; and seventhly, earthwork is backfilled, and the cofferdam is cleaned. According to the construction method, the staggered canal retaining wall can be corrected, and therefore the structural stability and functionality of the retaining wall are guaranteed.

The utility model relates to a reinforcing structure, belongs to the technical field of foundation reinforcing construction, and particularly relates to a reinforcing structure at a connecting joint of a building load-bearing wall and a raft foundation, which comprises the raft foundation, a plurality of first steel-concrete walls are fixedly mounted on the surface of the raft foundation, and a plurality of second steel-concrete walls are fixedly mounted on the surface of the raft foundation. A second steel-concrete wall body is fixedly installed on the peripheral wall of each first steel-concrete wall body, and a plurality of embedded steel bars are jointly and fixedly installed in the raft-shaped foundation and the inner bottom of the second steel-concrete wall body; the effects that the bearing capacity is enhanced, and a building is more stable are achieved, and the problems that an existing reinforcing structure is poor in bearing capacity, lack of steel bar supporting, not firm enough in connecting point, and insufficient in foundation bearing capacity and building safety coefficient are solved.

The invention belongs to the technical field of constructional engineering, and particularly relates to a rapid hole-forming construction process for a post-planted anti-floating anchor rod with a pressure grouting function, which comprises the links of intelligent positioning and geological adaptation preparation, self-adaptive hole-forming operation, anchor rod manufacturing and grouting, and temperature and humidity self-adaptive maintenance and acceptance. In the step of intelligent positioning and geological adaptation preparation, hole positions are positioned through three-dimensional laser scanning, conflicts are detected, a geological risk thermodynamic diagram is described by combining coring and radar scanning, and in the step of self-adaptive hole forming operation, torque and rotating speed are automatically adjusted according to the stratum, hole wall risks are monitored through sound waves, graded intermittent hole expanding is conducted, and cracks are blocked in a targeted mode. The method comprises the steps of anchor rod manufacturing and grouting, spiral rib anchor rod matching with a degradable support, double-cavity grouting pipe precise pressure control grouting, gradient grout supplementing after initial setting and temperature and humidity self-adaptive maintenance, temperature and humidity are monitored through a sensor, heat preservation and moisture preservation are automatically started, maintenance is finished after the standard is reached, and finally acceptance check is conducted to ensure that the anti-floating effect reaches the standard.

The invention provides a foundation reinforcing structure of a salinized soil foundation influenced by underground fresh water and a construction method of the foundation reinforcing structure. The reinforcing structure comprises an anti-seepage curtain, a pile foundation reinforcing system and a newly-added floor slab structure, the pile foundation reinforcing system comprises an original pile foundation structure and an expansion pile foundation reinforcing structure, and the newly-added floor slab structure comprises a structural beam and a steel bar truss floor support plate; the construction is divided into three stages, in the first stage, an anti-seepage curtain is formed through sodium bentonite cement paste grouting, and an underground fresh water erosion path is blocked; in the second stage, bearing platform extension is combined with anchor rod static pressure pile reinforcement, and the foundation bearing capacity is improved; and in the third stage, structural integrity and non-deformability are enhanced by newly adding a steel bar truss floor support plate structure floor slab. The reinforcement problem is systematically solved from the source to the appearance, the effect is stable, construction is safe, the method is suitable for existing building foundation reinforcement projects in salinized soil areas affected by underground fresh water, and safety and stability of buildings within the service life period can be guaranteed.

The invention belongs to the technical field of constructional engineering grouting, and particularly relates to a negative pressure grouting system for crack plugging and a construction method.The negative pressure grouting system comprises a perforation grout blocking structure, a crack sealing structure and a negative pressure grouting structure, and the perforation grout blocking structure comprises perforation drilling grout blocking holes in the two ends of a crack to be treated; the crack sealing structure comprises a V-shaped groove or a U-shaped groove which is formed along the crack, a sealing layer is embedded in the V-shaped groove or the U-shaped groove, the sealing layer is flush with the surface of concrete, and the negative pressure grouting structure comprises a slurry inlet hole and a negative pressure hole which are formed in the two ends of a to-be-processed section of the crack respectively. The slurry inlet hole is connected with slurry inlet equipment through a first orifice valve, the negative pressure hole is connected with vacuum generation equipment through a second orifice valve, the first orifice valve, the second orifice valve, the slurry inlet equipment and the vacuum generation equipment are connected with a control system, and the control system performs unified operation according to a control logic system.

The present application belongs to the field of wall waterproof structure, and discloses a method for preventing wall corner finishing layer from dampening and falling off and a wall corner finishing layer waterproof structure. The method comprises the following steps: S1, chiseling the wall finishing layer of a wall to form a wall finishing layer groove, and chiseling the ground protection layer to form a ground protection layer groove communicating with the wall finishing layer groove; S2, setting a waterproof structure on the wall finishing layer groove and the ground protection layer groove. The wall corner finishing layer waterproof structure comprises: a wall finishing layer groove formed by chiseling the wall finishing layer of a wall to a wall structure layer; a ground protection layer groove formed by chiseling the ground protection layer to a ground structure layer and communicating with the wall finishing layer groove; and a waterproof structure set in the wall finishing layer groove and the ground protection layer groove. The method for preventing wall corner finishing layer from dampening and falling off and the wall corner finishing layer waterproof structure have low construction difficulty and maintenance cost, and can effectively solve the problem of dampening and falling off of the wall finishing layer caused by water seepage.

The application relates to the technical field of foundation reinforcement, and particularly discloses an intelligent expansion soil foundation reinforcement device, which comprises a walking table and a reinforcement unit movably arranged at the advancing end of the walking table, and the reinforcement unit comprises a base table, a first plugging piece, a second plugging piece, a grouting piece, a first guide piece and a second guide piece. The two ends of the crack to be reinforced are plugged by the first plugging piece and the second plugging piece, the crack is treated in sections, each crack section is relatively isolated from other areas, the grout is prevented from overflowing to the two side through areas during the grouting process, and it is ensured that the grouting material can be accurately filled into the target crack section; the first guide piece and the second guide piece can be adaptively offset relative to the base table in the direction perpendicular to the feeding route of the walking table according to the change of the crack extension path, it is ensured that the first plugging piece and the second plugging piece are always accurately inserted into the crack, and meanwhile, the grouting piece can be accurately covered above the opening of the current crack section, so that the precision of crack grouting reinforcement is improved.

The application discloses an isolation structure and method for reducing displacement of a railway pile foundation caused by shield construction, and the isolation structure comprises underpinning beams and 2N columns of inclined piles, and N is greater than or equal to 2; the underpinning beams are located below an existing railway subgrade; each column of inclined piles comprises a plurality of inclined piles with the same inclination direction and inclination angle; the 2N columns of inclined piles are divided into two groups; the pile bottoms of one group of the inclined piles are located on one side of a to-be-constructed shield tunnel, and the pile bottoms of the other group of the inclined piles are located on the other side of the to-be-constructed shield tunnel; two adjacent columns of inclined piles in the same group are arranged in an X-shaped cross mode; the pile tops of the two groups of the inclined piles are connected with the underpinning beams and form a portal type support structure; the to-be-constructed shield tunnel passes through the portal frame surrounded by the inclined piles and the underpinning beams; and the two groups of the inclined piles are located between original railway pile foundations and the to-be-constructed shield tunnel. The application can resist the horizontal deformation of the original railway pile foundations caused by the shield tunnel construction, reduce the settlement of the railway subgrade, and effectively protect the normal operation of the railway.

This invention provides a composite reinforcement device and method for existing building foundations, relating to the technical field of existing building reinforcement; it aims to solve the problems of poor technology and low automation in existing building foundation reinforcement. It includes a movable building platform and sequentially arranged extension frames, lifting columns, and a pipe insertion mechanism integrated on the lifting blocks. The pipe insertion mechanism integrates a conveying unit for automatically and continuously transporting micro-steel pipes or drill rods, and a splicing unit for automatically centering and threading the micro-steel pipes. This achieves orderly construction of transporting, pile planting, and grouting for existing building foundations requiring reinforcement, and is particularly suitable for efficient and reliable foundation reinforcement around existing buildings in confined spaces. Through the integrated synergistic reinforcement system design of micro-steel pipe piles, foundation soil grouting, and the addition of a new raft foundation, it breaks through the limitations of traditional single reinforcement technologies and achieves precise adaptation to collapsible fill foundations.

The utility model relates to the technical field of anti-floating structures, and provides an anti-floating structure for basement reinforcement, which comprises an anti-floating anchor rod, a plurality of groups of fixing rings are sleeved on the anti-floating anchor rod, and every two adjacent fixing rings are arranged at intervals; a permeation plate is arranged at the top of the anti-floating anchor rod, a plurality of permeation holes are formed in the permeation plate, and a fixing anchor head is arranged at the bottom of the anti-floating anchor rod. Through the arrangement of the anti-floating anchor rod, a user can bear certain buoyancy through the anti-floating anchor rod when the water level is within a normal range, the anti-floating stability of the device is improved, after the water level exceeds the normal range, the user can drain water and relieve pressure through the permeation plate, the user can relieve hydrostatic pressure of a basement, and the water level is protected. The drainage and pressure relief capacity of the device is improved, the stability of the anti-floating anchor rod can be enhanced through the multiple sets of fixing rings, the device can better bear buoyancy, and the anti-floating performance of the device is improved.

The invention relates to a post-grouting steel pipe concrete pile reinforced bridge foundation and a construction method. The post-grouting steel pipe concrete pile reinforced bridge foundation comprises existing bridge stand columns and post-grouting steel pipe concrete piles. A quick dismounting hoop is arranged on the existing bridge stand column, and a flexible gasket is arranged between the quick dismounting hoop and the existing bridge stand column. Guide plate limiting plates are arranged between existing bridge stand columns, driving guide plates are arranged between the guide plate limiting plates, and steel pipe piles are inserted into the driving guide plates. A concrete strip-shaped foundation is arranged on the pile top of the steel pipe pile and comprises a bearing platform non-dismantling formwork and a steel pipe pile top formwork supporting frame. The steel pipe pile top formwork supporting frame is arranged on the top of the steel pipe pile, and the bearing platform non-dismantling formworks are arranged on the two sides of the steel pipe pile top formwork supporting frame. And movable gantries are arranged on the two sides of the bearing platform non-dismantling formwork. The method has the beneficial effects that accurate implantation of the newly-added bearing platform steel pipe pile is achieved; the perpendicularity deviation of the steel pipe pile meets the standard requirement; and the segregation phenomenon of the concrete is reduced.

This application discloses a layout device and its application, comprising: a protective casing, a base, and an adjustment assembly. The base is provided with a construction opening for installing a construction component. The adjustment assembly includes a first adjustment sub-component for adjusting the position of the construction component at the construction opening and a second adjustment sub-component for adjusting the position of the construction component along a first direction and a second adjustment sub-component for adjusting the position of the construction component along a second direction. The first adjustment sub-component includes a first guide rail portion fixedly disposed on the base, a first sliding portion slidably connected to the first guide rail portion, and a first pushing portion contacting the first sliding portion. The first pushing portion is used to push the first sliding portion to slide along the first guide rail in the first direction. The second adjustment sub-component includes a second guide rail portion fixedly disposed on the first sliding portion, a second sliding portion slidably connected to the second guide rail portion, and a second pushing portion contacting the second sliding portion. The second pushing portion is used to push the second sliding portion to slide along the second guide rail in the second direction.

The invention provides a clay area raft foundation void area discriminating and repairing device based on magnetic variation, which comprises an electromagnetic nail system, a monitoring and identifying system and a grouting system, the electromagnetic nail system can move along with the settlement of a clay layer and comprises a plurality of stages of electromagnetic nails, and an (n-1) th-stage electromagnetic nail matrix is distributed in each grid of an nth-stage electromagnetic nail matrix. The (n-1) th-stage electromagnetic nails in each grid are connected in series, and the first-stage electromagnetic nails are uniformly filled and arranged in the matrix grid of the third-stage electromagnetic nails in series; the grouting system comprises a plurality of grouting groups, and each grouting group comprises a normal grouting pipeline and a horizontal grouting pipeline; the monitoring and identifying system comprises a Hall element and an indicator lamp which are electrically connected, the Hall element is arranged at the bottom of the normal grouting pipeline, and the indicator lamp is arranged at the top of the normal grouting pipeline. The invention further provides an application method of the device. According to the method, building damage caused by raft disengagement is avoided, and a guarantee is provided for long-term safe operation of buildings in clay areas.

The invention relates to the technical field of power system transmission line grounding engineering. A lightning current impact resistant conductive concrete pole tower foundation is characterized in that 1) a multi-component synergistic modified conductive concrete layered gradient formula system is adopted, and a'conductivity-enhancement-anti-aging 'synergistic optimized layered formula is designed; 2) a lightning current multipath directional current diffusion and gradient buffer integrated structure: (1) a three-stage current diffusion guide system; (2) a gradient buffer anti-crack structure; and 3) a damage full life cycle intelligent management and control system: (1) a multi-dimensional sensing network; (2) an active intervention and self-repairing mechanism; and 4) an extreme environment adaptive strengthening structure: (1) anti-frost heaving strengthening in a high and cold frozen soil region; (2) anticorrosion strengthening of the coastal high-salt-mist area; and (3) strengthening shear resistance and seismic resistance in a strong earthquake area. Directional shunting of lightning current, accurate buffering of thermal stress, real-time management and control of damage and adaptation to an extreme environment are achieved, and the impact resistance and service reliability of the foundation are greatly improved.

The invention discloses a hydraulic structure concrete underwater repair robot based on heterogeneous dual-core cooperative control and an operation method. The system is mainly composed of an ROV carrier, an embedded dry chamber cabin, a vector propeller, a mechanical arm and a Pixhawk + PLC dual-core control system. The equipment adopts a hierarchical control framework: a motion control layer is based on Pixhawk flight control, realizes six-degree-of-freedom motion and attitude overturning, and accurately matches a complex-angle working plane; the operation control layer adopts an industrial PLC to control the dynamic sealing of the dry chamber cabin and the underwater operation surface, and a negative pressure dry environment is quickly established. A plurality of sensors and a manipulator are integrated in the cabin, visual accurate repair is carried out in a water-free state, and negative pressure evacuation is relieved after the repair is completed. The maneuverability of open source flight control and the logic reliability of the PLC are fused, the defects that a single controller is prone to overload and complex attitude alignment is difficult are overcome, and the high efficiency of deep water complex structure repairing and the system stability are guaranteed.

The invention discloses a rapid pile repairing method for a broken pile. The method comprises the following steps that the position and size of a fault of a pile body of a cast-in-place pile are determined through a sound wave transmission method; firstly, a hole with the diameter of about 1500 mm is manually excavated to the position 1-2 m away from the section of the broken pile; then chiseling the upper broken pile, cleaning a hole, and fixing the hole position by using a wood mold; a reinforcement cage is installed in a hole position for fixing the wood pattern, and concrete pouring is conducted; and after hole site core grouting is completed, concrete of the upper pile splicing part is constructed. The method is short in construction period and can be effectively suitable for broken pile treatment of mucky clay, and the strength of the section of the broken pile is higher.

The invention discloses an underwater large structure concrete repair split mounting type construction method which aims at solving the problem of repair of large underwater concrete structures such as flood discharge and scour prevention structures of hydropower stations and adopts a combined process of prefabricating high-strength concrete prefabricated parts on land, quickly splicing underwater and solidifying epoxy mortar. Through the steps of reconnaissance and design of a repair area, factory production of prefabricated parts, foundation reinforcement of an original structure, precise hoisting of the prefabricated parts in place, high-pressure epoxy mortar pouring, performance detection and the like, integrated stress of new and old structures is achieved by means of a special connecting structure of the prefabricated parts and anchoring design of the original structure; the technology effectively solves the problems that an existing repairing technology is long in construction period, high in cost, insufficient in impact resistance, poor in durability and the like, has the advantages of being high in repairing efficiency, good in economical efficiency, resistant to impact and abrasion, safe and controllable in operation, reliable in quality and the like, and is suitable for various underwater concrete structural bodies needing emergency repairing.