21902 results about "Pipe" patented technology

The invention belongs to the technical field of grouting compactness detection, and particularly discloses and provides an intelligent detection system and method for the grouting compactness of a bridge prestressed pipeline, and the system comprises a signal acquisition and analysis module, a defect boundary calibration module, a defect recognition and analysis module and a compactness judgment and processing module. The method specifically comprises the steps that acoustic emission and fluctuation response signals are collected in real time through a sensor array arranged on the outer wall of a pipeline, and three-dimensional slurry density distribution is recognized; constructing an inner wall three-dimensional model in combination with a pipeline design drawing, dynamically setting a slurry density threshold value according to a grouting material formula and an environment temperature, and further calibrating a slurry defect boundary; extracting multi-dimensional features such as spatial positions, effective volumes, geometric regularity and types of the defects on the basis of boundaries, and calculating grouting compactness; and finally, according to whether the compactness reaches the standard or not, a grout supplementing early warning instruction or a detection report is automatically generated. According to the method, the reliability of defect identification and compactness calculation under complex working conditions is remarkably improved.

The invention discloses an anchor rod body continuous forming process and equipment. The anchor rod body continuous forming process comprises the steps that a base material is heated and subjected to perforation treatment, and a hollow pipe blank is obtained; primary annealing treatment is conducted on the hollow pipe blank, and primary straightening is conducted on the annealed hollow pipe blank; the hollow pipe blank subjected to primary straightening is subjected to acid pickling so as to remove oxide skin on the surface of the hollow pipe blank; a finishing mill is adopted for conducting multi-pass finish rolling forming on the hollow pipe blank obtained after acid pickling, and the rolled anchor rod is obtained; the rolled anchor rod is subjected to secondary annealing treatment, the annealed rolled anchor rod is subjected to secondary straightening, and the temperature of secondary annealing is lower than that of primary annealing; the rolled anchor rod subjected to secondary straightening is subjected to fixed-length cutting; and performing cold rib rolling and thread rolling processing on the rolled anchor rod subjected to fixed-length cutting. According to the embodiment, on the premise that energy consumption is controlled, cold-state precision forming is achieved, and good comprehensive mechanical performance is obtained.

The invention discloses a special-shaped steel pipe concrete pipe section hoisting dynamic pose control method, relates to the technical field of ocean engineering underwater pipeline installation, and mainly solves the problems of insufficient dynamic response and low space pose control precision when a special-shaped pipe section is hoisted in a complex water flow environment. The method comprises the steps that pipe section space pose design parameters are obtained, the pitch angle and the rolling angle of a pipe section are monitored in real time through an inclination angle sensor set, disturbance torque generated by real-time water flow force is calculated, sling length compensation amount is generated, and the take-up and pay-off speed of a chain block at each lifting point is independently adjusted; and meanwhile, adjusting mooring ropes moored on the two sides are pulled to control the horizontal rotation angle of the pipe section, the height of a lifting hook and tension of the mooring ropes are fed back and adjusted in cooperation with a floating crane positioning system, and finally accurate underwater in-position of the pipe section to the preset position of the seabed is achieved. The device is mainly used for hoisting and sinking operation of the special-shaped concrete filled steel tube section in the marine environment, water flow interference can be effectively resisted, and accurate butt joint and installation quality of a pipe section connector are guaranteed.

The invention relates to the technical field of special-shaped pipe gallery manufacturing, and discloses a special-shaped prefabricated pipe gallery component forming method based on BIM parameter optimization. The method comprises the following steps: receiving initial BIM model data, extracting geometric topology features and material attribute features, and generating multi-dimensional feature vectors; performing structural characteristic classification on the component according to the vector, and dividing the component into a static characteristic component and a dynamic characteristic component according to a strain response threshold value when the component is stressed; when it is detected that parameter conflicts exist in the two types of components, an optimization constraint condition set containing conflicting parameters is constructed, and a multi-target parameter optimization path is generated; and performing iterative simulation on the initial BIM model data according to the path, and outputting optimized BIM model parameters meeting a preset forming standard. According to the method, through multi-dimensional feature integration, accurate classification and multi-target parameter optimization, dynamic coordination of parameters of the special-shaped prefabricated pipe gallery component is achieved, the consistency of component design and forming is improved, and the method is suitable for production of the special-shaped prefabricated pipe gallery component in a complex engineering environment.

The present application belongs to the technical field of mass concrete construction, and aims to solve the problem of high thermal resistance and slow heat dissipation of traditional cooling pipe laminar bottom layer, and discloses a gravity dam construction cooling water pipe based on destruction of laminar bottom layer and a method thereof. The cooling water pipe comprises a plurality of series water pipe units, each water pipe unit comprises a steel pipe, a flexible spring hose is arranged in the steel pipe, and the spring hose forms a spiral protruding turbulence structure along the inner wall of the steel pipe; the hose is fixed by pointwise anchoring and outer wall surface bonding with glue, and a ring is arranged at both ends for limiting and assisting turbulence. The present application breaks through the thermal resistance of laminar bottom layer, greatly improves the hydration heat conduction efficiency, is convenient to construct and has durable structure, and is suitable for mass concrete temperature control requirements.

The invention belongs to the technical field of steel sheet piles, and discloses a steel sheet pile for compensating stratum loss during pile pulling and a construction method.The steel sheet pile comprises a plurality of steel sheet pile units, and each steel sheet pile unit comprises a plurality of steel sheet piles; the foundation pit sides of the steel sheet pile units are connected with a plurality of compensation bags, and grouting systems are arranged on the foundation pit sides of the compensation bags. The foundation pit side of the steel sheet pile is coated with viscous grease, the side, facing the steel sheet pile, of the compensation bag is coated with pressure-sensitive adhesive, and the compensation bag is temporarily connected with the steel sheet pile; the grouting system comprises a main grouting pipe, the bottom of the main grouting pipe is connected with a horizontal grouting pipe, the side, facing the steel sheet pile, of the horizontal grouting pipe is connected with a plurality of flow dividing pipes, and the flow dividing pipes correspond to the compensation bags. A vertical branch pipe is upwards separated from the middle position of the flow dividing pipe, and is connected with a grouting connector at the bottom end of the corresponding compensation bag; the tail end of the flow dividing pipe is downwards divided into an inclined grouting pipeline, and the inclined grouting pipeline faces the lower portion of the steel sheet pile. The technical problem that filling is not timely due to the fact that grouting pipes are installed to fill gaps after steel sheet piles are pulled out in the prior art is solved.

The invention discloses a corrosion-resistant offshore wind power FRP-steel composite tower tube structure multi-objective optimization design method. The method comprises the following steps that a composite tower tube structure in an outer layer GFRP-steel tube-inner layer GFRP composite section form is adopted below the sea level and in a splash zone; mapping the coupling load time history to a parameterized finite element model of the composite tower tube structure; constructing a multi-objective optimization function by taking the minimization of the total manufacturing cost of the composite tower drum structure, the minimization of the total mass of the composite tower drum structure and the maximization of the total volume proportion of the GFRP material of the composite tower drum structure as objectives; and establishing a constraint evaluation system, carrying out iterative optimization on the multi-objective function by adopting a fast non-dominated sorting genetic algorithm with an elitist retention strategy, outputting a Pareto optimal solution set, and selecting a final implementation scheme. The problems that a traditional pure steel tower drum is large in corrosion loss and the design is difficult to balance multiple performance targets in the severe ocean environment can be solved.

The invention discloses a spiral steel pipe weld defect detection device applied to X-ray detection, and relates to the field of steel pipe weld detection, the spiral steel pipe weld defect detection device comprises a base and a movable platform mounted at the upper end of the base, and the upper end of the base is provided with a steel pipe; a stirring roller and a lifting roller are rotationally installed at the upper end of the movable platform and located below the steel pipe fitting. According to the spiral steel pipe welding seam defect detection device applied to X-ray detection, high-pressure wind power is transmitted to the flow dividing pipeline through the pressurizing air outlet by the air blower, and the transmitted high-pressure air carries pressure to penetrate through an opening gap in the surface of the lifting roller to impact on the surface of a steel pipe; the cleaning brush at the upper end is driven to move back and forth in a reciprocating manner in cooperation with limiting of a movable plate and a limiting rod, so that surface residual impurities generated by contact of a pressurizing air outlet and a steel pipe fitting are subjected to auxiliary guiding and removing work, and flaw detection can be more accurate.

The invention specifically relates to the technical field of digital twinning, and discloses a seamless steel tube size parameter detection and deviation correction system based on digital twinning, which comprises a multi-dimensional data acquisition module, a digital twinning model construction module, a deviation quantitative evaluation module, a correction scheme generation module, a correction scheme iteration module and a knowledge model optimization module, a real-time transmission mechanism of data acquisition-deviation analysis-correction decision is constructed, full-dimensional parameters of the seamless steel pipe are acquired in real time through a multi-dimensional data acquisition module, a digital model of the steel pipe is synchronously input, and a quantitative model driven by full-process data is constructed, so that the full-dimensional parameters of the seamless steel pipe are obtained. The size deviation degree and the surface quality score are accurately calculated through a deviation quantitative evaluation model, comprehensive deviation grades are divided, an initial correction scheme is generated based on deviation types and grades, parameters are quantified and adjusted through an iterative optimization correction scheme, an iterative correction-case precipitation-model optimization closed-loop structure is constructed, continuous evolution of the system is achieved, and the system quality is improved. The production efficiency is improved.

The application discloses a post-tensioned prestressed seamless concrete floor construction method, which comprises the following steps: laying a corrugated pipe; installing a tension end and a fixed end node; inserting a prestressed tendon into the corrugated pipe; installing a strain sensing assembly, wherein the strain sensing assembly comprises stress transmission steel bars and a strain sensing sensor, the stress transmission steel bars comprise coaxially arranged first steel bars and second steel bars, and the two main steel bars are connected through connecting steel bars; an installation gap is left between the end faces of the opposite ends of the first steel bars and the second steel bars, and the strain sensing sensor is installed in the installation gap; pouring concrete, wherein the strain sensing assembly is poured and wrapped in the concrete; and tensioning the prestressed tendon, wherein during the tensioning process of the prestressed tendon, the prestress is controlled, the tensioning elongation value is measured as a check, and the strain value of the concrete is simultaneously referred to. According to the application, the strain condition of the concrete in the prestressed seamless floor construction process can be known by the staff through the strain sensing assembly.

The invention relates to the technical field of pipeline splicing and welding, and discloses a rapid splicing and welding device for a large pipeline in a narrow space, which comprises a base, a butt joint assembly is arranged on the upper part of the base, a lower hoop plate is arranged on the outer surface of the butt joint assembly, and an upper hoop plate is arranged on the upper part of the lower hoop plate; an automatic electric arc welding mechanism is arranged in the driving assembly, the butt joint assembly comprises a support fixedly connected to the upper surface of the base, a lead screw is slidably inserted into the middle of the support in a penetrating mode, and the end of the lead screw is fixedly connected with the side edge of the lower hoop plate. The pipeline is locked through splicing of the upper hoop plate and the lower hoop plate, bidirectional extrusion force is generated through cooperation of the inclined butt joint groove and the butt joint block, the pipeline is synchronously held by the upper hoop plate and the lower hoop plate, after the ends of the hoop plates are aligned, the pipeline is accurately arranged in the circular hoop in a sleeved mode, misalignment caused by gravity sagging is effectively eliminated, concentric alignment of the welding ends is rapidly completed, and the welding efficiency is improved. And the assembly precision and efficiency are improved.

To provide a deep well filtering structure that effectively prevents the subsidence and collapse of the well wall. [Solution] The deep well filtration structure of this invention includes a surface loess layer 1 and a well channel 7, with a concrete well side 8 poured onto the surface of the surface loess layer, a reinforced concrete permeable pipe and a reinforced concrete solid pipe 10 installed in sequence inside the well channel, a well pipe pallet 6 placed at the bottom end of the well channel, and below the surface loess layer, in sequence, a gravel-mixed loess layer 2, a gravel layer 3, a crushed stone-mixed loess layer 4 and an underground loess layer 5, and a clay ball-filled sealing layer 9 filled between the surface loess layer, the gravel-mixed loess layer and the reinforced concrete solid pipe.

The disclosure describes an expanding drill device for expanding a pilot bore by moving the expanding drill device along a specified drilling line comprising: a housing; a drill head that has a cutting wheel which is arranged on the drill side of the expanding drill device so as to be rotatably mounted and driven about a rotational axis and relative to the housing and on which at least one drill tool for loosening the ground or the rock is arranged; and a drill-side connection for producing a connection to a pipe section located in the pilot bore on the drill side, wherein the drill side centrally has at least one receiving chamber for the loosened ground or the loosened rock, said receiving chamber being connected to a material conveyor device of the expanding drill device.

A curtain grouting reinforcement method for a tunnel group in a deep backfill area, and a reinforcement effect assessment method. The reinforcement method comprises the following steps: S1, calibrating hole positions according to design; S2, mounting a drilling rig; S3, drilling holes; S4, burying orifice pipes; S5, performing grouting; S6, sealing the holes; and S7, performing the next drilling and grouting cycle. Investment saving and safe and efficient construction are achieved, tunnel surrounding rocks can be fully reinforced, engineering geological conditions are improved, tunnel cavern stability is good, and ground surface settlement is small. The reinforcement effect assessment method comprises an inspection-hole drilling method, multi-wave and multi-component engineering seismograph inspection, assessment based on a high-definition drilling video, assessment based on soil and stone mixture parameter changes before and after grouting, etc., such that multi-angle comprehensive analysis can be achieved, grouting reinforcement effect assessment is more accurate, and a curtain grouting effect assessment system is further improved, thereby providing research ideas for inspecting and assessing the grouting effect in soil-rock mixed backfill areas.

The invention relates to a complex soft rock double-layer primary supporting super-large section tunnel and a construction method. The complex soft rock double-layer primary supporting super-large section tunnel comprises a long pipe shed cover arch supporting system, a deformation control strong supporting structure, an anti-disengaging early-warning lining pouring trolley, a temporary inverted arch deformation control structure and a buffering yielding supporting system. The method has the beneficial effects that the curved surface formwork can be rapidly installed on the upper portion of the guide pipe and the lower portion of the steel arch frame, the installation efficiency is high, stability is good, and the construction period is shortened; a long pipe shed and a small guide pipe penetrate through the deformation control strong supporting structure and are driven into a tunnel, grouting is conducted, the overall stability of the supporting structure is enhanced, and the complex soft rock geology is reinforced; concrete pouring is monitored in real time, and the compactness of vault concrete is guaranteed; section steel is clamped in the inverted arch, reinforcing connecting ribs are welded between the section steel in a penetrating mode, surrounding rock collapse is prevented, and tunnel construction safety is guaranteed. And a buffer yielding support device is arranged between the interface and the double-layer arch frame, so that the pressure at the interface of the layered rock and soil stratum is in smooth transition, and the overall balance is improved.

The utility model belongs to the technical field of agriculture and forestry machinery, and particularly relates to a soil improvement device. Comprising a deep scarification gun, an air inlet pipe and a spray explosion tank, the lower end of the deep scarification gun is in interference fit with a deep scarification head, the deep scarification head is of a conical structure, an airflow channel is formed in the deep scarification gun, a spraying hole is formed in the lower end of the deep scarification gun, an air inlet is formed in the side wall of the upper end of the deep scarification gun, and the airflow channel is communicated with the spraying hole and the air inlet; the air inlet pipe comprises a hose and a metal pipe, one end of the hose is communicated with the metal pipe, the metal pipe is in interference fit with the air inlet, and the other end of the hose is communicated with the air outlet of the spray explosion tank. According to the scheme, through the integrated modeling design of the deep scarification gun, the drill rod, the deep applying rod and the deep applying head are connected instead of threads or bolts, unnecessary connecting structures on parts are reduced, meanwhile, connecting pieces are reduced, the mechanical property of the deep scarification gun is optimized, the durability of the parts is improved, and the service life of the deep scarification gun is remarkably prolonged.

The invention discloses an earth surface directional drilling high-pressure deep hole grouting construction method based on steel sleeve hole fixing. The earth surface directional drilling high-pressure deep hole grouting construction method comprises the following steps that firstly, a directional drilling machine is used for vertically drilling a grouting hole downwards; secondly, a plurality of steel floral tubes are sequentially put down in the three-opening first branch grouting hole; thirdly, cement-bentonite-based sleeve shell materials are continuously injected into the first section of the steel floral tube to the inner bottom of a first branch grouting hole of the three-opening hole, and an annular space between the first branch grouting hole of the three-opening hole and the steel floral tube string is filled with the cement-bentonite-based sleeve shell materials; fourthly, a packer is lowered to the bottom of the three-opening first branch grouting hole; a packing section is formed in front of the packer; and fifthly, cement grout is injected into the grouting pipe, grouting is conducted on the packing section, the finally-set cement-bentonite-based casing material is split and damaged under the effect of grouting pressure, and the grouting grout is injected into the stratum to be reinforced through the grout channel. According to the method, the hole collapse phenomenon when the grouting hole penetrates through the unfavorable geological section can be prevented, the grouting stopping effect of the packer is guaranteed, and retreating type segmented grouting construction is guaranteed.

The invention discloses a construction method applied to underground mine vertical shaft surrounding rock condition improvement. The construction method comprises the steps that a flat working face is cleaned, a temporary water nest is arranged for drainage, the drilling position is projected, and a down-the-hole drill is debugged; rock drilling is conducted according to the designed angle, direction and depth, propelling pressure is adjusted along with the depth, and cleaning and plugging are conducted after hole forming; grouting pipes with holes are used as pipe sheds to be driven into the holes, and are welded into a whole through annular steel bars; single-liquid-slurry and double-liquid-slurry segmented grouting is adopted, and the grouting pressure is controlled; during construction, grout diffusion and stratum deformation are monitored, after surrounding rock consolidation reaches the standard, weak blasting is matched with a small excavator for excavation, and after acceptance inspection is qualified, reinforcing steel bars are bound, formworks are installed, and concrete is poured. Compared with the prior art, the problems of collapse and water gushing of the vertical shaft under the strong weathering and water-rich geology can be solved, and the defects of insufficient supporting strength, grouting uniformity, construction efficiency and long-term stability in the traditional technology are overcome.

The invention relates to the technical field of tunnel engineering prefabricated part production, in particular to a large-diameter duct piece independent kiln assembly line conveying prefabricating method and system. S2, a reinforcement cage and an embedded part are installed; s3, concrete is precisely poured and vibrated; s4, pre-curing and surface treatment; s5, carrying out roller way type flow conveying; s6, hydration heat-driven dynamic maintenance is carried out; and S7, demolding and finished product detection. And S8, mold circulation. According to the large-diameter duct piece prefabricating production line, through technical innovation in multiple aspects of mold, conveying, maintenance, control and the like, the core technical problem in existing large-diameter duct piece prefabricating production is solved, high-precision, high-efficiency, low-energy-consumption and green production of large-diameter duct pieces is achieved, and the large-diameter duct piece prefabricating production line has remarkable technical advantages and wide application prospects and is suitable for large-diameter duct piece prefabricating production. The method can be widely applied to infrastructure construction projects such as shield tunnels, open caisson projects and underground comprehensive pipe galleries.

The invention belongs to the technical field of foundation pit supporting, and particularly relates to a steel sheet pile joint sealing performance in-situ detection process and a monitoring method. Through the cooperative design of the embedded pipe and the detection hole, the embedded pipe is filled with the liquid reagent, and if leakage happens to the joint of the steel sheet pile, the solid reagent in the detection hole can make contact with the liquid reagent to change color. Leaking stoppage is carried out after the color changing position is detected, and long-term monitoring is carried out by monitoring the soil body index of the leaking position so as to be used as a supplement of a detection process. The problem of ex-situ detection of steel sheet pile joint leakage and the problem of difficulty in leaking stoppage are solved, and the normal function of the steel sheet pile under the long-term working condition can be guaranteed.

The invention discloses an inclined extrusion rack of a large-diameter cold-bending hollow section steel extrusion forming device, and belongs to the technical field of cold-bending hollow steel pipe machining. The inclined extrusion rack comprises a rack body, a feeding assembly is arranged on the right side of the rack body, a cut inclined feeding roller is arranged on the feeding assembly, and a working plate is connected to the inner wall of the rack body through bolts; and the lower surface of the working plate is fixedly connected with a lower connecting plate. According to the large-diameter cold-bending hollow profile steel extrusion forming device, in the working process, the rack body is fed through the feeding assembly, machining is completed in the rack body, at the moment, a scraping plate plays a role in scraping welding waste, meanwhile, a motor works, at the moment, a cleaning plate can move in the vertical direction, welding slag can be efficiently cleaned, and the working efficiency is improved. And meanwhile, the cleaning plate moves in the horizontal direction along the workpiece, welding slag can be swept down, the cleaning effect is better, the welding slag is not left, and the working efficiency is high.

The utility model relates to the technical field of gas extraction, in particular to an underground gas extraction blowout preventer, and mainly solves the technical problems that the existing gas extraction blowout preventer is high in spewing control difficulty, high in safety risk and high in sprayed slag cleaning workload. The device comprises a movable chassis, a deslagging box, a multi-way pipe, a drilling machine through pipe, a coal seam drilling pipe, a negative pressure pipe, a pressure relief buffer cover, a deslagging pipe and a pressure sensor. According to the device, gushing is detected through the pressure sensor, on-off of the negative pressure pipe and the slag discharging pipe is controlled in a feedback mode, dependence on manual experience is not needed, it can be guaranteed that gushing and corresponding equipment are started consistently, and the gushing control difficulty is greatly reduced; meanwhile, water and residual materials for slag spraying can be discharged into the slag discharging box through the slag discharging pipe in time to be collected, and the workload of slag spraying and cleaning is reduced; the device is further provided with a pressure relief buffer cover, when the pressure is too large due to gushing, buffering can be conducted through the pressure relief buffer cover, and damage to the device caused by the too large pressure is avoided.

The invention relates to the technical field of industrial automatic detection and machine vision, and discloses a steel pipe welding seam defect detection method and system based on machine vision, and the method comprises the steps: obtaining original image data of a bent welding seam area, and extracting a preliminary contour point set; analyzing curvature identification key turning points of the initial contour point set; carrying out geometric segmentation and fitting on the contour according to the key turning points, and constructing a complete boundary point sequence containing a starting point and an ending point; according to the complete boundary point sequence, dividing areas and carrying out defect classification to obtain a defect positioning result; tracking a defect boundary from the defect positioning result, and determining a final evaluation range. According to the method, the technical problem of low steel pipe weld defect detection precision in the prior art is solved through accurate geometric analysis of the complex weld contour.

The invention discloses a high-precision steel pipe surface grinding device and method, and relates to the technical field of high-precision steel pipe machining. The device comprises a clamping assembly, a grinding assembly is arranged on the clamping assembly, a heat dissipation assembly located below the grinding assembly is arranged on the clamping assembly, a driving assembly is arranged on the outer wall of the grinding assembly, a refrigeration power generation assembly is arranged on the grinding assembly, and a push-pull regulation and control assembly is arranged on the refrigeration power generation assembly. The clamping assembly is used for clamping and rotating the steel pipe. By using the device, in the process of grinding the outer wall of the steel pipe, the outer wall of the steel pipe is fully lubricated and cooled in the mode that the steel pipe is directly dipped in cooling liquid, so that the smoothness and quality of grinding are guaranteed, chippings generated by grinding are adsorbed by an electromagnetic iron rod, the chippings are further prevented from being attached to the outer wall of the steel pipe again, and the grinding efficiency is improved. The quality of the outer wall of the steel pipe after grinding is influenced, and the grinding quality is effectively improved.

The invention relates to the technical field of welding, and provides a steel pipe welding auxiliary device for steel furniture production, which comprises an adjusting mechanism, a control mechanism is fixedly mounted on the inner left side of the adjusting mechanism, a fixing mechanism is fixedly mounted at the inner upper end of the adjusting mechanism, and the adjusting mechanism comprises a base, a transmission rod and a gear motor. Mounting bins are fixedly connected to the two sides of the upper end of the base correspondingly, lifting bins are slidably connected to the interiors of the mounting bins correspondingly, first threaded rods are in threaded connection to the lower ends of the lifting bins correspondingly, and first bevel gears are fixedly connected to the lower ends of the first threaded rods correspondingly. Through the cooperation of the adjusting mechanism and the control mechanism, the adjusting mechanism of different welding surfaces at the welding seam is optimized, the height change amplitude of the seam can be effectively controlled, obvious lifting of the seam is avoided, the stability of the welding process and the welding quality are guaranteed, the operation intensity of workers is reduced, and the production efficiency is improved. And the comfort and the convenience in the operation process are improved.

The invention relates to the technical field of computer-aided anti-seismic analysis, and discloses an anti-seismic performance simulation test method and system for a concrete-filled steel tube structure, and the method comprises the steps: obtaining a parameter set of the concrete-filled steel tube structure; identifying a critical buckling mode and constructing a defect correction model; constructing a coupling damage index; constructing a numerical instability risk evaluation value based on the structure energy proportion; carrying out strong earthquake nonlinear time-history iterative solution; and outputting the anti-seismic performance index set and the coupling failure area. Compared with the prior art, the technical problem that Newton iteration divergence is prone to occurring in numerical solution under the coupling instability condition that traditional nonlinear finite element analysis is relied on for strong earthquake response calculation, especially when a steel pipe is subjected to local buckling and core concrete enters a high-pressure three-axis stress state is solved. Due to the fact that the local buckling and crushing damage coupling index and the self-adaptive time step length adjusting mechanism are constructed, the stability of the anti-seismic performance simulation result of the concrete-filled steel tube structure under the strong earthquake effect is improved.

The invention discloses an engineering geology grouting reinforcement device, and relates to the field of geology grouting reinforcement, the engineering geology grouting reinforcement device comprises a mounting rack, the mounting rack is fixedly connected with a first telescopic driving part, the output end of the first telescopic driving part is fixedly connected with a mounting plate, and the mounting plate is fixedly connected with a grouting pipe. The grouting pipe is used for pressurizing and grouting, so that the grout enters a reinforcing gap under the action of pressure; after filling is conducted for a period of time, the injection-compression pipe moves downwards, the sealing plate blocks the grouting opening under the action of the spring to prevent grout from flowing back, meanwhile, the injection-compression pipe moves downwards to extrude the grout, the extrusion force is further increased, and geological gaps are filled with the grout more sufficiently. Through the reciprocating operation, the geological reinforcement position can be fully grouted, the stability and strength of the geological structure are effectively enhanced, the quality and reliability of grouting reinforcement are greatly improved, and the reinforcement requirement under the complex geological condition is met.

The invention relates to the technical field of oil and gas well completion sand prevention, in particular to a sand blasting perforation and sand prevention integrated combined operation device and a construction method. According to the technical scheme, a central pipe is installed in the center of an inner cavity of a jet pump assembly, the lower end of the central pipe extends out of the jet pump assembly, a liquid suction opening is formed in the lower middle portion of the jet pump assembly, a liquid outlet is formed in the outer wall of an upper connector, and a mixing cavity and a diffusion cavity are formed between the jet pump assembly above the liquid suction opening and the central pipe. An outlet of the diffusion cavity is communicated with the liquid outlet; the inner side of the central pipe is movably connected with a lower sliding sleeve; a nozzle is mounted on the jet pump assembly outside the lower flow transfer hole; and the inner side of the upper flow transfer hole of the central pipe is movably connected with a middle sliding sleeve. The method has the beneficial effects that the three processes of sand blasting perforation, blockage removal after perforation and ground filling sand prevention are completed by tripping in the tubular column once, so that the times of tripping the tubular column and using ground construction equipment are reduced, the construction efficiency is improved, the construction cost is saved, and the well control risk in the construction process is reduced.

The invention discloses a pipe grabbing system for building water well vertical pipe construction, and relates to the technical field of building mechanical and electrical installation, the pipe grabbing system comprises a pipe grabbing mechanism, a rotating disc, a lifting rod, a base, a visual module and a controller; the controller is configured to acquire image data fed back by the visual module if pipe grabbing demand information initiated by a user is received, and perform pipeline identification based on the image data to obtain pipe diameter data of a pipeline; a pipe grabbing control quantity is generated based on the pipe diameter data, a pipe grabbing control instruction is sent to a pipe grabbing mechanism according to the pipe grabbing control quantity, a rotating mechanism is controlled to lift the pipeline away from the ground, and a rotating disc is controlled to rotate; and calling the image data, determining a pipeline mounting position, generating a pipeline height movement amount and a pipeline positioning movement amount, sending a pipeline height control instruction to the lifting rod according to the pipeline height movement amount, and sending a pipeline positioning control instruction to the rotating mechanism according to the pipeline positioning movement amount. The construction method has the effect of improving the construction efficiency.

The application discloses a multi-column packaging machine convenient to clean, which comprises a feeding assembly, a former body and a longitudinal sealing assembly. A material guiding recess is arranged at the bottom of a material bin. The accumulated powder material is gathered and guided to flow to a first discharge hole through the material guiding recess. The former body is arranged below the feeding assembly. A central through hole is arranged on the front side of the former body. A longitudinal sealing accommodating channel is movably formed between the surface in the third accommodating recess and the back surface of the longitudinal sealing movable seat. The longitudinal sealing accommodating channel is in communication with the central through hole. One end of a filling pipe is fixedly connected with the first discharge hole, and the other end of the filling pipe is sequentially arranged in the central through hole and the longitudinal sealing accommodating channel. Compared with the prior art, the application has the beneficial effects that the flowability of the powder material in the material bin is effectively improved through the arrangement of the arc-shaped curved surface, the central through hole is designed in an open type, and the detachable connection mode of the longitudinal sealing assembly is adopted, so that the disassembly direction of the longitudinal translation of the filling pipe is realized.