15 results about "Structural rehabilitation" patented technology

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.

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.

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 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.

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.