43results about How to "Guarantee the quality of reinforcement" patented technology

The invention provides a reinforced concrete column replacing and reinforcing method and a device for unloading the load of a reinforced concrete column, belonging to the technical field of buildings. The invention solves the problem that after the existing reinforced concrete column has a quality problem, the reinforcing and repairing works are relatively difficult. The reinforced concrete column replacing and reinforcing method mainly comprises the steps of material preparation, unloading, chiseling, erection of shuttering, replacement and removal of shuttering. The device for unloading the load of the reinforced concrete column comprises a supporting column which can be supported on the beam of the current layer, and hydraulic lifting mechanisms capable of lifting the supporting column are arranged at the two sides of the supporting column. The reinforced concrete column replacing and reinforcing method has the advantages that the original size of the column section can not be changed, and reinforcing traces can not be left. The device for unloading the load of the reinforced concrete column, which adopts hydraulic unloading, has the advantages of large applied force and uniform application of force.

The invention discloses a ground pre-grouting construction technology suitable for strengthening deep long-distance roadway surrounding rock, and particularly relates to a ground pre-grouting strengthening technology for deep long-distance roadway surrounding rock. The ground pre-grouting strengthening technology for the deep long-distance roadway surrounding rock includes the following steps that firstly, a ground grouting drill hole is formed in the ground through a drilling machine, the ground grouting drill hole comprises a casing pipe segment, a deflecting segment and a horizontal strengthening segment, a casing pipe segment drill hole is internally provided with a casing pipe, the deflecting segment and the horizontal strengthening segment are provided with rock open holes, and ground inlets of the ground grouting drill hole are formed in the walking direction of a roadway; secondly, grout is injected into a stratum rock body where the horizontal strengthening segment exists through a grouting pump located on the ground, and beforehand strengthening government of the roadway surrounding rock is achieved. According to the ground pre-grouting construction technology for strengthening the deep long-distance roadway surrounding rock, strengthening and grouting of the whole roadway surrounding rock can be achieved, and the ground pre-grouting construction technology is suitable for active strengthening of the coal mine large-range roadway surrounding rock and is high in safety and adaptability.

The invention relates to a soft foundation discharge fixing technique, used to quickly fix and strengthen soft foundation. The invention combines high-pressure tube device and upright discharge device, to force high pressure on the high-pressure tube, to repeatedly expand the high-pressure tube to sideward press soil, to quickly solidify the soil step from step, and improve the soil strength, to strength the foundation. The strengthen depth of foundation is not limited by soil saturated degree, to confirm the strength quality. The time cost by the invention is 1 / 4-1 / 2 of traditional discharge strengthen method, while its cost is 50-70% of traditional discharge strengthen method, with simple operation, non additional construction field, and repeated used tools, non pollution and waste, and significant economic and social benefits.

The present invention relates to a ground quick dynamic consolidation technique suitable for application on shallow soft soil. Said invention makes the dynamic consolidation theory be combined with vacuum water-reducing technique, and adopts an active water discharge mode of specially-made vacuum water-reducing system, etc. to accelerate the dissipation of excess hydrostatic pore-water pressure and discharge of pore-water before and after compaction and in the course of compaction, and combines the dynamic characteristics of saturated soft clay and strength-increasing law to improve the construction process and technical parameters of traditional compaction method so as to effectively raise consolidation effect and depth of the soil body.

The invention discloses a pre-grouting reinforcement technology for the ground construction of a structural fracture zone of a mining working face. The pre-grouting reinforcement technology comprisesthe following steps of: step (1). performing foundation construction at a drill site; step (2). drilling a straight hole section, and lowering and fixing a first-level casing pipe; step (3). drillinga main branch hole bedding section and grouting, and completing the construction of a main branch hole building angle section and the main branch hole bedding section; and step (4). repeating the step(3) and the step (4), and completing the construction of secondary branch holes one by one. Before the construction of the underground fully mechanized coal mining face, a drilling machine is used onthe ground for drilling, and drills a horizontal grouting hole by using a directional technology; a ground surface grouting pump is used for injecting grout into a stratum rock mass where a fracturedroof of the fully mechanized coal mining face is located, so that the advance reinforcing treatment of the rock mass in the fracture zone of the roof is realized, the construction environment duringthe open-off cut and the working face mining is improved, and the construction progress of the roadway is accelerated. The pre-grouting reinforcement technology has high safety, improves the construction environment of workers, has less pollution to the environment, and is an initiative roof reinforcement technology.

The invention discloses a raft foundation building lifting and reinforcing structure and method under a corrosive geological environment. The lifting and reinforcing structure comprises a lower columnof an existing building, a raft foundation connected with the bottom of the column, a composite foundation reinforcing layer connected with the lower portion of the raft foundation, a composite pilefoundation connected with the lower portion of the composite foundation reinforcing layer and a water stop curtain connected to the periphery of the raft foundation. During the construction, by arranging the water stop curtain, blocking of the water in a water containing layer and preventing of the outflow of slurry and in-situ water and soil are facilitated, the inverted-L-shaped design of the water stop curtain can further avoid the re-corrosion of the raft foundation, and the limit of the lateral displacement is ensured; and by arranging the composite foundation reinforcing layer and the composite pile foundation, local lifting and overall reinforcement of the raft foundation are facilitated, the water stop curtain is combined to improve the overall bearing capacity, by forming groundwater monitoring holes, monitoring of the level of groundwater during the field construction is facilitated, and maintaining of the stability of water and soil pressure in the underground environment isfacilitated.

The invention discloses a waterproof construction method of a pile head of an anchor rod static pressure pile. The method comprises the following steps that a base plate cushion layer is constructed; steel plate waterproof casing pipes are embedded; a waterproof system is constructed; base plate reinforcing steel bars are bundled, concrete is poured, so that a structural base plate is formed, and a pile pressing hole is reserved; after the concrete strength of the structural base plate meets the requirement, the static pressure pile is pressed to be constructed to a projected depth; pile splicing construction of the static pressure pile is carried out; pile breaking and sealing construction of the static pressure pile is conducted; after the pile end of the static pressure pile is completely closed, a base plate top face waterproof layer is constructed. By means of the waterproof construction method of the pile head of the anchor rod static pressure pile, the technical problem of waterproof construction at the joint of the subsurface structure self-waterproofing base plate and the pile head of the anchor rod static pressure pile is solved, due to design of the steel plate waterproof casing pipes, additional arrangement of a waterproof paint layer, optimization of the mode of the pile pressing hole and the like, a foundation is reinforced, watertightness is also strongly guaranteed, operation is simple in the constructing process, construction is convenient and fast, constructing efficiency can be improved, meanwhile, structural attractiveness is guaranteed, and the popularization and application prospect is wide.

The invention discloses a construction method for fast assembling precast concrete panels to reinforce an underwater structure. The method includes the steps that a pollution preventing film is arranged, temporary facilities are erected, the surface of the underwater structure to be reinforced is treated, the precast concrete panels are assembled, bottom sealing is performed, grouting is performed, prestress is applied, and the temporary facilities are torn down. With the method, reliable and fast reinforcement of the drainage-free underwater structure can be achieved, time cost and capital cost for maintenance and reinforcement of the underwater structure are reduced to the maximum extent, active reinforcement can also be performed, and the reinforcement quality and the reinforcement effect are further guaranteed.

The invention relates to a reinforcing method of a hollow plate girder bridge. The reinforcing method comprises the following steps that an original pavement layer on a hollow plate and original concrete in a hinge joint are dismantled; a hinge joint bottom die and hinge joint reinforcing ribs are installed, one part of each hinge joint reinforcing rib is located in the hinge joint, the other partof each hinge joint reinforcing rib is located above the hinge joint, and concrete is poured into the hinge joints to form hinge joint concrete; a first connecting piece is arranged between every twoadjacent hollow plates, and the two ends of the first connecting piece are implanted into the two corresponding adjacent hollow plates respectively; a reinforcing mesh is arranged on the hollow plate, and the reinforcing mesh is bound with the first connecting piece; the concrete is poured on the hollow plates to cover portions, located above the hinge joints, of the reinforcing mesh, the first connecting piece and the hinge joint reinforcing ribs, and a concrete pavement layer is formed; and an asphalt pavement layer is paved on the concrete pavement layer. Reinforcing quality can be guaranteed, maintenance difficulty and cost are reduced, and meanwhile problems that a structural appearance is affected by reinforcing the hinge joints through a bonding steel plate, and the steel plate needs to be maintained in a later period are solved.

The invention discloses a raft foundation building uplift and reinforcement structure and method in a corrosive geological environment. The uplift and reinforcement structure includes an existing building lower column, a raft foundation connected to the bottom of the column, and a composite foundation connected below the raft foundation The reinforced layer, the composite pile foundation connected under the reinforced layer of the composite foundation, and the water-stop curtain connected to the periphery of the raft foundation. During construction, by setting up the water-stop curtain, it is beneficial to block the water in the aquifer and prevent the outflow of slurry and in-situ water and soil. The inverted L-shaped design of the water-stop curtain can further avoid the further corrosion of the raft foundation and ensure the lateral Displacement limitation; through the setting of composite foundation strengthening layer and composite pile foundation, it is beneficial to locally lift the raft foundation and overall reinforcement, and improve the overall bearing capacity in combination with water-stop curtains; through the setting of groundwater monitoring holes, it is convenient for on-site monitoring during construction The level of groundwater level is conducive to maintaining the stability of water and soil pressure in the underground environment.

The invention discloses a tunnel inverted arch foundation reinforcing assembly and a construction method. The reinforcing assembly comprises multiple steel flower tubes and a steel cover. The multiplesteel flower tubes are sequentially and fixedly connected in the vertical direction. Multiple grouting holes are formed in the tube walls of the multiple flower steel tubes. The steel cover is arranged at the top end of the topmost steel flower tube in the vertical direction. A first through hole and a second through hole are formed in the steel cover. The upper ends of the first through hole andthe second through hole are each provided with a detachable grouting steel tube and an exhaust grouting hose. The construction method comprises the steps of drilling, link-by-link connection, steel flower tube discharging in place, installing of steel caps, grouting tubes and exhaust tubes, grouting reinforcing, disassembling of grouting steel tubes, excavating inverted arching and supporting structure constructing. According to the reinforcing assembly and construction method for reinforcing a foundation before inverted arch excavation, the defect that a drill is placed at an arc inverted arch contour line due to the fact that drilling is performed after inverted arch excavation is avoided, drilling operation is greatly facilitated, and the drilling efficiency and the drilling quality are improved.

The invention discloses an embedded pipeline inner support reinforcing system and a reinforcing method thereof. The reinforcing system comprises a reinforced circular ring support, wherein the reinforced circular ring support comprises a main body, and the main body comprises a first assembly, a second assembly, a first arc-shaped connecting piece, a main body connecting bolt and an adaptive block; and one end of the first assembly is fixedly connected with one end of the second assembly, and the other end of the first assembly is connected with the other end of the second assembly to form a complete closed circular ring through coordination of a first limiting clamping block, a second limiting clamping block and the adaptive block. The reinforcing method thereof comprises the following steps of strand pipeline current situation verification, design and manufacture of the reinforced circular ring support, first assembly installation, second assembly installation, limiting clamping groove expansion of an expansion device and adaptive block embeddedness and the like. According to the embedded pipeline inner support reinforcing system and the reinforcing method thereof, a damaged pipeline is subjected to structural non-excavation repair, radial tension enables the support to be tightly attached to a to-be-reinforced structure, the new and old structures cooperatively work to makeup irregular change of the section size of the damaged pipeline, so that reinforcing quality is guaranteed, the repairing process is simplified, and the service life of the pipeline is prolonged.

The invention relates to the technical field of embedded bolts, and discloses a novel concrete embedded bolt mechanism. The mechanism comprises a connecting rod and an extension rod. The right end ofthe connecting rod is in threaded connection with the left end of the extension rod. A screw thread is arranged at the exterior of the right end of the extension rod. The exterior of the right end ofthe extension rod is in threaded connection with a nut matched with the screw thread. A T-shaped fixing piece is installed at the right end of the extension rod. A plastic fitting matched with the nutis fixedly connected to the left end of the T-shaped fixing piece. The nut is sleeved with the plastic fitting. A screw cap is in threaded connection with the exterior of the left end of the connecting rod. According to the novel concrete embedded bolt mechanism and the using method thereof, when construction is performed on N layers, a combination component composed of a T-shaped embedded pieceand a nut plastic fitting of an embedded bolt is embedded at the outer side of the upper portion of a concrete shear wall in advance, when the (N+1)th layer formwork is reinforced, one piece of steeltube support is added to the position of the embedded bolt, and the (N+1)-layer concrete shear wall integrated wood formwork reinforcing quality is ensured.

The invention discloses a near-slope-surface slope surface rock mass anchoring arrangement method. The near-slope-surface slope surface rock mass anchoring arrangement method comprises the steps: thegeometric dimension of to-be-tested near-slope-surface slope surface rock mass and the vertical fracture aperture of the near-slope-surface slope surface rock mass are obtained; and according to the geometric dimension and the vertical fracture aperture of the near-slope-surface slope surface rock mass, the number of required anchor holes, the distance between the anchor holes and the length of ananchor rod body are calculated. According to the near-slope-surface slope surface rock mass anchoring arrangement method, the subjectivity and experience of rock mass anchoring arrangement can be effectively lowered, the anchoring arrangement method can be used for guiding a near-slope-surface slope surface rock mass anchoring grouting process for realization, scientization and refinement of anchoring reinforcement are realized, and a good foundation is laid for ensuring the anchoring reinforcement quality.

The invention discloses a reinforcing construction method of a cylindrical frame column template, and belongs to the technical field of architectural engineering construction methods. The reinforcingconstruction method comprises the steps that 1, a drawing is understood firstly, and a cylindrical structural column is determined; 2, a supporting keel is produced on the basis of the cylindrical structural column; 3, an arc-shaped mold cavity formed through combination of a thin wood plate and short wooden blocks is produced; 4, a plurality of wooden blocks are adopted to be laid on the supporting keel to be fixed, and thin wood plates are laid on the upper layer to serve as cylindrical columnar concrete pavement contact materials; 5, the supporting keel and the arc-shaped mold cavity form acylindrical module, the distance between every two adjacent supporting keels in the cylindrical modules is 1000 mm, and the distance between every two split screw rods in a reinforcing template system is set to be 400 mm; and 6, finally concrete is poured into the well-reinforced template structural system, and the template system is moved upwards to conduct construction of a next section of column body. According to the reinforcing construction method, it is ensured that the construction concrete is reliable in formed quality, the template turnover frequency is improved, and the constructioncost is further lowered greatly.

A method for fixing concrete column beam formwork chamfering strips comprises the steps that a, concrete column beam formworks, a gas nail gun and gas nails are prepared; b, chamfering strips are prefabricated; c, the chamfering strips are fixed in the concrete beam formwork; d, and the chamfered strips are fixed in the concrete column formwork. The method for fixing the concrete column beam formwork chamfering strips has the advantages that the gas nail gun is more economical than a concrete column beam chamfering machine in price, a chamfering strip device is simple in structure, good in stability and convenient to make, the reinforcing quality and speed and turnover times of the chamfering strips are ensured, concrete members are well formed, the fixed time period of the chamfering strips can be arranged flexibly, the operating efficiency is greatly improved, and the comprehensive cost of construction is reduced.

The invention discloses an adjustable pipeline inner support reinforcing system and a reinforcing method thereof. The reinforcing system comprises at least one reinforcing circular ring support, a reinforcing circular ring support main body and an adjusting device, one end part of the main body is a constraint end, the other end part of the main body is a sliding end, and the sliding end is overlapped on the outer side of the constraint end; and the adjusting device comprises constraint end screw blocks, sliding end screw blocks and bidirectional screw rods, and two outer thread sections of each bidirectional screw rod are correspondently connected with inner threads of each group of constraint end screw block and sliding end screw block through threads. The reinforcing method thereof comprises the steps of pipeline current situation verification, designing and manufacturing of the reinforcing circular ring support, expansion of the adjusting device, fit between the adjusting device and the main body and the like. According to the adjustable pipeline inner support reinforcing system and the reinforcing method thereof, a damaged pipeline is subjected to structural non-excavation repair, and the radial tension enables the support to be tightly attached to a to-be-reinforced structure; and a new structure and an old structure cooperatively work to make up the irregular change of the section size of the damaged pipeline, the reinforcing quality is guaranteed, the repairing process is simplified, and the service life of the pipeline is prolonged.

The invention discloses a horizontal soil reinforcement method for a subway open-cut foundation pit. The specific steps of the horizontal soil reinforcement method for a subway open-cut foundation pit are as follows: S1: construction of drainage facilities, S2: removal of obstacles at the bottom of the open-cut foundation pit Object, S3: Ramping the foundation pit foundation, S4: Surveying and mapping of the width and depth of the foundation pit, S5: Stock preparation for reinforcing steel bars, S6: Pouring reinforced concrete, S7: Surveying and mapping the reinforced concrete surface formed in the step S6 again, S8: Construction of piles, S9: construction of superstructure, the present invention first constructs drainage facilities, prevents excessive water accumulation, ensures unobstructed foundation pit, reduces construction difficulty, adopts high-pressure jet grouting, high work efficiency, and through vibration The stick removes the residual air bubbles in the concrete in time, improves the quality of concrete pouring, and ensures the reinforcement of the foundation pit. In the surveying and mapping of the width and depth of the foundation pit, at least 3 surveys and mappings are carried out, and the final value is the average value of the 3 surveys to ensure that the surveying and mapping the accuracy of the results.

The invention relates to a soft foundation discharge fixing technique, used to quickly fix and strengthen soft foundation. The invention combines high-pressure tube device and upright discharge device, to force high pressure on the high-pressure tube, to repeatedly expand the high-pressure tube to sideward press soil, to quickly solidify the soil step from step, and improve the soil strength, to strength the foundation. The strengthen depth of foundation is not limited by soil saturated degree, to confirm the strength quality. The time cost by the invention is 1 / 4-1 / 2 of traditional discharge strengthen method, while its cost is 50-70% of traditional discharge strengthen method, with simple operation, non additional construction field, and repeated used tools, non pollution and waste, and significant economic and social benefits.

The invention discloses a pressure-maintaining circulating grouting method which comprises the following steps: (1) hole positions of a plurality of grouting holes are set and marked in a to-be-grouted area, and adjusting a drilling machine to a designed angle to drill to a designed depth. (2) hemp threads are wound on the outer portion of the steel sleeve, the steel sleeve is fixed at an orifice of the grouting hole, and then the steel sleeve is installed to the grouting depth in the grouting hole; (3) after the steel sleeve is solidified, a circulating backflow grouting plug is installed at the tail end of the steel sleeve, the circulating backflow grouting plug is lifted up through a pressurizing pump, and the opening of the grouting hole is blocked; (4) a grouting hose of a grouting system is connected with a grouting pipe connector of the annular backflow grouting plug, a grout return hose of the grouting system is connected with a grout return pipe connector of the annular backflow grouting plug, and grouting is conducted; and (5) when the grouting amount of the to-be-grouted hose is consistent with the backflow amount of the grout return hose, it is indicated that the stratum grout suction amount meets the design requirement, and grouting is stopped.

The invention discloses a rock mass anchorage setting method on a slope face. The method includes: obtaining the geometric size of the rock mass near the slope face to be measured and the vertical crack opening degree of the rock mass near the slope face; The required number of anchor holes, the distance between anchor holes and the length of the anchor rod body are calculated according to the opening degree of the vertical crack. This method can effectively reduce the subjectivity and experience of rock mass anchorage setting, and the anchorage setting method can be used to guide the realization of rock mass anchorage grouting on the slope surface, realizing the scientific and refined anchorage reinforcement, and ensuring the quality of anchorage reinforcement Lay a good foundation.

The invention provides a supporting structure and a plugging sleeve structure for anchor rod gap grouting. The supporting structure comprises an anchor rod; a sleeve is arranged at the position, corresponding to a rock mass crack, of the anchor rod, and the length of the sleeve is greater than the width of the rock mass crack; and water-swellable waterstop strips are arranged at two ends or withinthe full-length range of the sleeve, and a gap between the sleeve and the anchor rod allows a grouting pipe to pass through. According to the supporting structure and the plugging sleeve structure, plugging can be carried out according to the accurate position of the crack, the problem of untight grouting is avoided, the reinforcement quality is ensured, and a large number of grouting materials can be saved. Meanwhile, the plugging sleeve structure at the crack can play a role as an anti-corrosion layer, and the safety and reliability of long-term operation are ensured.

The invention provides a reinforcing steel bar distribution structure shaped like a Chinese character mi for a floorslab. The reinforcing steel bar distribution structure shaped like a Chinese character mi mainly is mainly used on a rectangular floor slab with girders at the periphery, and mainly comprises a lower-layer reinforcing mesh, an upper-layer reinforcing mesh and a top and bottom opposite angle connecting bracket. The periphery of the lower-layer reinforcing mesh penetrates through a reinforcing steel bar body of the girder, and the lower-layer reinforcing mesh comprises a cross-shaped reinforcing mesh and a slab corner reinforcing mesh. The upper-layer reinforcing mesh is distributed above the lower-layer reinforcing mesh, and the periphery of the upper-layer reinforcing mesh is connected with the upper side part of the reinforcing steel bar body. The upper-layer reinforcing mesh comprises a middle reinforcing mesh and a girder corner reinforcing mesh. Through the mode of distributing the reinforcing steel bars in a shape like a Chinese character mi at the upper and lower layers, the performance of the various reinforcing meshes are given full play, and the materials are also saved. The reinforcing steel bar distribution structure can be prefabricated in a factory and is then constructed on the site, the site operation is convenient, and the construction efficiency and the construction quality are improved. The top and bottom opposite angle connecting bracket leads to integral connection of the upper-layer reinforcing mesh and the lower-layer reinforcing mesh, so that cracks on four corners of the floorslab are eliminated, and the bearing capacity of the floorslab and the rigidity of a floor system structure are also improved.

The invention discloses a hill sand inorganic grouting material, a preparation method and a construction method thereof. The sand in the hill sand inorganic grouting material is grinding hill sand, the cementing material is mixture of cement and rock phosphate, the admixture is mixture of expansion agent and water reducing agent. The hill sand inorganic grouting dry material is formed by 1 weightpart of grinding hill sand, 1 weight part of cement, 0.02-0.04 weight part of rock phosphate, 0.07-0.10 weight part of expansion agent, 0.007-0.010 weight part of water reducing agent. In the construction site, the hill sand inorganic grouting material is prepared by firstly pouring 13-15% of water accounting for the total weight of the grouting dry material into a mixing container, then slowly adding the hill sand inorganic grouting dry material into the mixing container, uniformly mixing the materials after fully stirred. After a base plane cleaning, a template is installed, then the hill sand inorganic grouting material is injected into the structure without vibration. The method of the invention solves the technology problems of intolerant high temperature, weak durability, weak flameresistance of the cementing material and complicated construction technology in the prior art.

The invention relates to a filter pipe tread-in vacuum drainage super-soft soil reinforcing technical method, which comprises the following steps of: cutting a certain number of drainage plates with a certain length according to the reinforcing depth and reinforcing area of dredger fill, and binding the drainage plates on filter pipes at intervals of 40 to 60cm; inserting the plastic drainage plates to a predetermined depth, and horizontally pressing the filter pipes below mud by a certain depth while the drainage plates are inserted; connecting the filter pipes with vacuumizing equipment by using mud discharging devices; and directly transferring vacuum negative pressure to foundation soil through the filter pipes and the drainage plates by a novel vacuum drainage reinforcing technology in which sludge on a surface layer is taken as a sealing layer and the filter pipes are taken as a drainage channel and reinforcing a foundation for 20 to 50 days. The low-permeability sludge on the surface layer is used for forming a sealing system, so that a large number of natural resources are saved; the dredger fill is directly reinforced without being aired after being filled, so that the construction period is shortened, and reinforcing speed is high; the bearing capacity of the foundation reaches 50 to 80kPa, and the reinforcing effect is good; and natural sand and stone materials and a sealing film are not used, so that environmental friendliness, high speed, economy and advancement are achieved.

The invention belongs to the technical field of concrete structure reinforcement, and relates to a method for improving impact strength of concrete by a surface repairing technique. The method is characterized in that polyacrylonitrile short fibers and a modified epoxy resin adhesive are utilized, and the surface of a concrete structure is repaired by coating of the adhesive for multiple layers, laying of the short fibers, and other processes, so as to achieve the effect of improving the impact strength of the concrete structure. The technique has the advantages that processes are simple and convenient, the operation is easy, impact resistance of the concrete structure is improved obviously, and excellent reinforcement effect and good stability are achieved, thereby achieving better application prospects.

The invention relates to a high-pressure jet grouting pile foundation reinforcement construction method which comprises the following steps that firstly, a plurality of grout stopping curtain piles are arranged along the boundary of a foundation reinforcement area in a driving mode to form a circle of closed grout stopping curtain, and any two adjacent grout stopping curtain piles are meshed with each other; and secondly, foundation reinforcement high-pressure jet grouting piles are constructed in a foundation reinforcement area defined by the grout stopping curtain. According to the high-pressure jet grouting pile foundation reinforcement construction method, the multiple grout stopping curtain piles are driven at the boundary of the foundation reinforcing area to form a circle of closed grout stopping curtain, and then construction of the foundation reinforcing high-pressure jet grouting piles in the foundation reinforcing area is performed; cement paste can be prevented from flowing away along gaps of gravels or underground water during construction of the foundation reinforcement high-pressure jet grouting pile, so that the reinforcement quality of the high-pressure jet grouting foundation can be ensured; according to the foundation reinforcement construction method, engineering technical risks are reduced, construction is convenient, and the construction cost is low.