26 results about "Structural rehabilitation" patented technology

The invention relates to the technical field of composite material damage repair, in particular to a method for repairing a composite material laminated plate with a fiber guiding characteristic. The repairing method comprises the following steps of pneumatic grinding, patch preparation, surface treatment, cleaning, adhesive film cutting, pasting, adhesive film curing, finishing and the like. According to the method, the adaptive patch is prepared by pneumatically polishing the rectangular cut hole of the stepped surface, the adhesive film is used for curing in the middle, and the adhesive layer is combined with the matched patch, so that a fiber-guided repairing structure is realized; under the condition that the structure repairing strength is guaranteed, the area for removing healthy mother board materials is reduced to the maximum extent, the probability of local stress concentration of a repairing bonding face is reduced, the machining difficulty is lowered, and the universality of repairing design application is improved. And by setting different step lengths, the stress load of the cementing repair surface is more uniform instead of being excessively concentrated on the 0-degree laying layer, so that the repair setting is more reasonable, and the service life of the repaired structure is prolonged.

The invention discloses a man-machine interaction-based deformed steel joint laser additive repairing method, which combines a man-machine interaction technology and a laser additive repairing technology, and overcomes the problems of insufficient repairing precision, low repairing efficiency and the like of a traditional repairing method in a complex environment. The whole process covers three core links of damage identification and data acquisition, man-machine interaction and repair parameter optimization and program setting and laser cladding, and efficient, accurate and intelligent repair operation is achieved. The invention relates to the technical field of steel structure repairing.

To provide a method for repairing an underwater concrete structure, which can easily and reliably repair a portion requiring repair and reduces the risk of repair filler falling off after repair. [Solution] A method for repairing an area requiring repair that has been formed on the bottom surface 1a of an underwater concrete structure 1, comprising: a filling space forming process in which the area requiring repair is chipped away to form a filling space A for repair filler 4 having an opening 3a on the bottom surface 1a of the concrete structure 1; a filling space shaping process in which an inclined surface 3b that widens upward is formed around the entire circumference or part of the inner surface of the opening 3a; a repair filler filling process in which the repair filler 4 is filled into the filling space A; and a filling space closing process in which the opening 3a is blocked from below with a bottom plate 5, and a buoyant body 7 filled with air is placed below the bottom plate 5, and the buoyancy of the buoyant body 7 presses the bottom plate 5 against the opening 3a.

To provide a method for repairing a structure, which is simpler than a conventional method, and a method for manufacturing the structure.SOLUTION: A method for repairing a structure 900 including a water collecting space 940 and a water collecting hole 950 communicating with the water collecting space 940, the method comprising: forming an open portion P1 by cutting off only an upper end portion 931 on one side of upper end portions 931 on both sides of the water collecting hole 950 of the structure 900; disposing a water collecting space forming body 100 in the water collecting space 940 via the open portion P1; disposing a water collecting hole forming body 300 communicating with a water collecting portion 140 of the water collecting space forming body 100; and pouring a repairing material Z into a space formed by the water collecting hole forming body 300 and the water collecting space forming body 100.SELECTED DRAWING: Figure 1

This invention provides a method for repairing underwater concrete structures that allows for easy and reliable repair of areas requiring repair, while minimizing the risk of the repair filler material falling off after repair. [Solution] A method for repairing a part requiring repair formed on the bottom surface 1a of a concrete structure 1 underwater, comprising: a filling space formation step of chipping away the part requiring repair to form a filling space A for a repair filling material 4 having an opening 3a on the bottom surface 1a of the concrete structure 1; a filling space shaping step of forming an inclined surface 3b that expands upward on the entire circumference or part of the inner surface of the opening 3a; a repair filling material filling step of filling the filling space A with the repair filling material 4; and a filling space closing step of closing the opening 3a from below with a bottom plate 5 and placing a buoyancy body 7 filled with air below the bottom plate 5, thereby pressing the bottom plate 5 against the opening 3a with the buoyancy of the buoyancy body 7.

A structural strengthening device to improve lateral strength of a building frame. The structural strengthening device comprising a structural member, connected to two beam-column connectors, comprising two jacketing pieces and two buffering material fillers. By connecting adjacent columns in the building frame, resisting moments are generated at ends of the structural strengthening device during lateral deformation of the building frame, and bending moments and stresses at a base of the connected columns may be reduced. Implementation of the structural strengthening device reduces time and space required for structural rehabilitation of buildings, and the structural strengthening device is detachable to permit use the structural strengthening device as a temporary, reuseable or permanent rehabilitation structure.

The invention discloses an intelligent construction method and system for historic building structure repair, and the system comprises a building evaluation module, a repair preview module, a repair evaluation module, an interference analysis module, a real-time supervision module and an active early warning module. The method overcomes the subjectivity and limitation of traditional manual investigation, provides a comprehensive and accurate data basis for the formulation of a repair scheme, and carries out the repair rehearsal and construction interference simulation through the construction of a digital twinborn body. Before the scheme is implemented, the repairing effect, the cost, the construction period and structural safety risks and environmental interference possibly caused in the construction process are evaluated and optimized for multiple rounds, a final scheme giving consideration to the repairing effect and construction safety is screened, and the progress, the cost and interference parameters are compared with a standard scheme in real time in the construction stage of the final scheme. And the construction is strictly executed according to an optimization scheme.

To provide a cement composition capable of improving sulfuric acid resistance, a mortar composition, a repair method of a concrete structure.SOLUTION: A cement composition according to the present invention includes: a binder (B) comprising a Portland cement, a blast furnace slag fine powder, and Shirasu fine powder; an electric furnace oxide slag fine aggregate (S); and a polymer for cement admixture (P).SELECTED DRAWING: None

The utility model discloses a concrete injection device for repairing cracks in a cold region in winter, and relates to the technical field of building structure repairing. A spiral main shaft is mounted on the mixing barrel through a bearing, a plurality of mixing rods are mounted on the outer side wall of the spiral main shaft, an electric valve is mounted on a discharge pipe at the bottom of the mixing barrel and connected with one end of a delivery pump through a pipeline, and the other end of the delivery pump is connected with the upper side wall of the injector through a pipeline; the mixing cylinder is adopted to realize mixing of conductive concrete, the mixing motor is adopted to drive the spiral main shaft to rotate during mixing, and meanwhile, the mixing rod on the spiral main shaft is used for mixing raw materials, so that the conductive concrete is uniformly mixed, and when the conductive concrete is stored, the mixing motor rotates at a low speed; and during joint filling, the needle head is arranged in a gap, the pressure pump enables the conductive concrete in the material injector to enter the gap in a pressurizing mode, and rapid operation is facilitated.

The invention relates to the technical field of civil structure repairing, in particular to an annular storage type building reinforcing structure and method. The reinforcing structure comprises an original silo wall base layer, shear-resistant implanted steel bars, a radial embedded column framework, an annular hidden beam framework and an external post-cast superimposed concrete layer. The method comprises the following steps: performing deep scabbling on the surface of an original structure, performing classified injection to repair existing cracks, and constructing a space stress exoskeleton woven by hidden columns and hidden beams on the periphery of a silo wall; implanted steel bars distributed in a matrix mode are used as an interlayer shear force transmission medium, a tensile steel bar net is bound on the outer side of the implanted steel bars, and shrinkage-compensating concrete doped with fine stone is poured on the outer side of the implanted steel bars. According to the invention, the newly added concrete layer and the degraded silo wall are fused into a bending whole with same curvature deformation through the shear-resistant locking and space frame effect of new and old interfaces. According to the construction method, the old silo wall is directly used as an inner side force bearing template, and under the conditions that materials do not need to be emptied and normal industrial production is completely not interrupted, the structural bearing capacity, the anti-cracking performance and the service life of an original silo and a concentration tank are greatly improved.

The application belongs to the technical field of building structure connecting joint, and discloses a beam end cast-in-situ fabricated flexible replaceable joint embedded with a damper and a construction method. The technical scheme is as follows: a beam component comprises a prefabricated beam segment and a cast-in-situ beam segment; the cast-in-situ beam segment is arranged between a prefabricated associated component and the prefabricated beam segment. An L-shaped cutout is arranged at the bottom of one end of the prefabricated beam segment, and an L-shaped embedded steel plate is arranged at the cutout; an extended segment of the L-shaped embedded steel plate is connected with the beam bottom of the cast-in-situ beam segment. A right-angled triangle notch is arranged at the connecting section of the cast-in-situ beam segment and the prefabricated associated component. The damper is horizontally arranged below the L-shaped embedded steel plate, one end of the damper is connected with the side wall of the prefabricated associated component, and the other end of the damper is connected with a downward outward convex damper connecting steel plate of the L-shaped embedded steel plate. While the load bearing capacity and energy dissipation capacity of the structure are ensured, the damage of the joint structure is reduced, the structure repair cost and repair period are greatly reduced, the rapid recovery of the structure after disaster is realized, and the structural toughness is improved.

The application relates to the fields of green low-carbon technology and intelligent construction technology, and discloses a fabricated structure repairing method and device, an electronic device and a storage medium.The method comprises the following steps: adding a preparation time of a repairing work, a construction time of a structure support assembly, a construction time of a demolition operation, a construction time of steel bars, a construction time of concrete and a construction time of a steel plate to obtain a repairing completion time; generating a toughness index of a fabricated structure after a current repairing scheme is implemented according to a disaster starting time, the repairing completion time, a performance function of the fabricated structure and a toughness index model; taking a ratio of the toughness index and total carbon emission as a comprehensive evaluation value of the current repairing scheme; and selecting the current repairing scheme as a target repairing scheme of the fabricated structure when the comprehensive evaluation value is greater than a preset evaluation value.The application is beneficial to improving the acquisition efficiency of the target repairing scheme of the fabricated structure.

The utility model discloses a local repair material flattening mechanism of a concrete structure, and relates to the technical field of concrete structure repair, the local repair material flattening mechanism comprises a fixed base plate, a handle is embedded in the top end of the fixed base plate, and chamfers are arranged at four corners of the fixed base plate. Supporting side plates are symmetrically arranged on the bottom end face of the fixing base plate, one side of each supporting side plate is rotationally sleeved with a rolling wheel, a fixing shaft hole is formed in the side face of each supporting side plate, a fixing rotating shaft is connected into each rolling wheel in an embedded mode, and a first embedding notch and a second embedding notch are oppositely formed in the bottom end of the fixing base plate. By arranging the push plate, the scraping plate, the needle-shaped column and the rolling wheel, through mutual cooperation of the push plate, the scraping plate, the needle-shaped column and the rolling wheel, the two sides of the scraping plate gradually make contact with the surface of a repairing material from the middle position, the flatness of the outer surface of the repairing material is further guaranteed, and therefore it is guaranteed that the repairing surface is flush with the surface of an original concrete structure, and the attractiveness of the repairing material is improved.

To provide a method for repairing concrete structures that can improve the adhesion of repair materials to the surface of concrete structures and has high water vapor permeability. [Solution] The method for repairing concrete structures comprises steps S20, S40, and S50. Step S20 involves applying a first curable composition containing a material that is liquid at 40°C, has a flash point, and is water-soluble, and a primer containing water to the surface of the concrete to be repaired. Step S40 involves applying or impregnating a laminate with the second curable composition to the primer-coated surface of the concrete after step S20, and attaching the repair material. Step S50 involves curing the primer and curable composition after step S40.

The invention discloses a frequency-oriented jacket repair structure and a design method, and belongs to the technical field of ocean engineering structure repair. The method aims to keep the natural vibration frequency of a repaired structure unchanged, and is characterized by comprising the following steps: firstly, establishing a dynamic model taking equivalent stiffness and equivalent mass of a restoration as variables, and reversely solving a stiffness and mass combination meeting the frequency change rate requirement; and furthermore, by actively regulating and controlling the mixing amount of the thermal expansion microspheres mixed with the grouting material and a thermal activation process, a performance lever is used, the final performance of the restoration body is accurately molded, and beneficial annular pre-tightening force is generated on a restoration interface while the light weight is realized, so that the restoration body is restored. Triple effects of repairing and reducing weight, prolonging the fatigue life and keeping the dynamic characteristic of the structure stable are synchronously achieved. According to the method, the crossing from passive repair to active performance design is realized, and the industrial problems that the additional mass is too large and the structural dynamic characteristics are easy to change in a traditional repair method are fundamentally solved.

The application discloses a kind of wisdom construction method and system for ancient building structure repair, including building evaluation module, repair preplay module, repair evaluation module, interference analysis module, real-time supervision module and initiative early warning module, is through three-dimensional laser scanning and visual image scanning automatic identification quantization damage, overcome the subjectivity and limitation of traditional manual survey, provide comprehensive, accurate data basis for repair scheme, then through building digital twin to repair preplay and construction interference simulation, before scheme implementation, the repair effect, cost, duration and the structural safety risk and environmental interference possibly caused in construction process are evaluated and optimized in multiple rounds, and the final scheme that repair effect and construction safety are considered is screened, and in final scheme construction stage, progress, cost, interference parameter and standard scheme are compared in real time, ensure that construction is strictly executed according to optimized scheme.

The invention relates to the technical field of green low carbon and the technical field of intelligent construction, and discloses a fabricated structure repairing method and device, electronic equipment and a storage medium. The method comprises the steps that the preparation time of repairing work, the construction time of a structural supporting assembly, the construction time of dismantling work, the construction time of steel bars, the construction time of concrete and the construction time of a steel plate are added, and the repairing completion time is obtained; according to the disaster start time, the repair completion time, the performance function of the fabricated structure and the toughness index model, generating a toughness index of the fabricated structure after the implementation of the current repair scheme is completed; and the ratio of the toughness index to the total carbon emission serves as a comprehensive evaluation value of the current repair scheme, and when the comprehensive evaluation value is larger than a preset evaluation value, the current repair scheme is selected as a target repair scheme of the fabricated structure. The method is beneficial for improving the obtaining efficiency of the target repairing scheme of the fabricated structure.

The objective is to provide a manhole or box rehabilitation structure that allows workers to enter the manhole and easily connect rehabilitation pipeline components. [Solution] The rehabilitation structure 1 for a manhole or basin M having an inlet 4 and an outlet 5 comprises a joint 10 fitted into at least one of the inlet 4 and the outlet 5, and a rehabilitation pipe body 20 having a main body side inlet 21A and a main body side outlet 21B, wherein the joint end face 11 on the opposite side of the fitting side of the joint 10 directly or indirectly abuts against the main body side end face of either the main body side inlet 21A or the main body side outlet 21B, and the joint 10 and the rehabilitation pipe body 20 are connected by covering the area around the contact portion 15 or adjacent portion where the joint 10 and the main body side end face 22 abut. The rehabilitation pipe body 20 has positioning portions 40, 40 on the main body side inlet 21A and the main body side outlet 21B.

A method for repairing cracked concrete including the steps of creating purposeful grooves along the cracks. The extracted concrete is then broken down into pieces of a size not exceeding the width of the grooves. Following this, a thorough cleaning of the grooves is conducted. A compacted layer of a granular material is placed all over the grooves, then a high-density mesh is placed on top. Subsequently, an amalgamation of repurposed concrete and hydraulic concrete is expertly poured over the grooves. The method culminates with the application of a final finish across the entire driveway, imparting heightened durability. Additionally, a touch of aesthetic flair is introduced through the mounting of a decorative element on the compacted concrete. This method uniquely combines structural repair with visual enhancement, offering a comprehensive solution for cracked concrete driveways.

This invention relates to the field of structural repair and reinforcement technology, and discloses a structural repair and reinforcement device for concrete chimneys and cooling towers. The device includes a back plate, with a locking buckle fixedly installed on the top of the back plate. A repair cylinder is fixedly installed on the outer side of the back plate, and a pump body is fixedly installed below the outer side of the repair cylinder. The discharge end of the pump body is connected to a spray gun via a pipe. The male and female connectors are interlocked to allow pull ropes one and two to be closed and bound to the outer wall of the chimney or cooling tower, thus fixing the back plate and reducing its sway. At this time, the two casters on the side wheel frame at the end of the side rod and the caster on the end of the middle rod roll against the outer wall of the chimney or cooling tower to reduce frictional resistance. After this step, the suspended maintenance personnel can move the spray gun to the defective or damaged area and start the pump body to spray the repair cement from the repair cylinder through the spray gun. Finally, the maintenance personnel smooth the surface, and the repair work is completed.

The invention discloses a district ancient dwelling building group activation and updating construction method. The method comprises the following steps: acquiring multi-dimensional spatio-temporal information and establishing a digital twinborn model; building value evaluation and structure health degree zoning planning; material gene map construction and reversible repair and reinforcement, non-bearing space reconstruction and functional modular implantation; according to the invention, on the basis of systematic protection, adaptive transformation and value improvement of the existing ancient residential building group in the district, a system which covers early-stage digital investigation, value evaluation and zoning, and middle-stage structure restoration and reinforcement, space transformation and intelligent operation and maintenance management is constructed. According to the method, a systematic construction method for the whole process from district ancient dwelling building groups to later environment improvement and intelligent operation and maintenance is adopted, the district ancient dwelling building groups are activated and updated, sustainable utilization of cultural relic buildings is achieved through deep fusion of a digital technology and a traditional repairing technology, and the method has high popularization value.

The invention relates to the technical field of civil engineering structure repair, and discloses a shear key disease repair method suitable for an operating immersed tunnel, which comprises the following steps: a, an evaluation step: carrying out safety evaluation on a shear key of the operating immersed tunnel to determine the damage degree of the shear key; b, substrate treatment: performing substrate treatment on the non-uniform deformation part of the immersed tunnel to improve the substrate compactness and adjust the non-uniform deformation; c, a repairing step: according to a result of the evaluation step, selecting one of the following modes to repair the shear key: c1, when the shear key structure is not damaged, repairing by adopting a reinforcing mode; and c2, when the shear key structure is damaged, the shear key structure is repaired in a replacement mode. According to the method, the horizontal shear keys of the bottom plate of the immersed tunnel are transformed into the structure capable of providing temporary vertical constraint, and the technical problem that the invalid shear keys of the side wall are safely replaced under the condition that operation traffic is not interrupted is solved.

The utility model relates to a structure for repairing a defective facade on an underwater concrete structure. The method is applicable to the technical field of concrete structure repair. According to the technical scheme, the repairing structure for the defective facade on the underwater concrete structure is provided with anchor bars which are anchored into the concrete structure in the direction perpendicular to the surface of the defective facade at the defective position on the concrete structure; the reinforcing mesh is arranged at the defective position of the concrete structure in the surface direction parallel to the defective facade, and the reinforcing mesh is mounted on the anchor bars; the baffle is installed on the defect vertical face of the concrete structure, the baffle can cover the defect on the defect vertical face, and a pouring opening and a water drainage opening which are communicated to the defect position on the defect vertical face are formed in the top position of the baffle; and the pouring body is formed by condensing a pouring material which is poured to the defect position on the defect facade through the pouring opening in the baffle.