15145results about "Building material handling" patented technology

The invention provides a construction method of a prefabricated multi-ribbed cavity floor, and belongs to the technical field of prefabricated multi-ribbed plate construction. The construction method of the prefabricated multi-ribbed cavity floor comprises the steps of full-hall scaffold building, main keel laying, overall leveling and the like. The construction method comprises the steps that S1, full-hall scaffold building is conducted, specifically, when a full-hall scaffold is built, vertical rods on the upper layer and the lower layer are required to be aligned, the vertical rods are uniformly arranged from the two sides of a cast-in-place ribbed beam, the vertical rods are arranged at the intersection positions of floor elastic bidirectional lines, and scaffold boards are laid under the vertical rods; S2, main keels are laid, specifically, when the main keels are installed, the main keels are required to be arranged in order and not to be inclined, and the two vertical rods at the intersection positions must abut against the main keels; and S3, overall leveling is conducted, specifically, after the main keels are laid, overall leveling is conducted according to control lines, and full-hall scaffold formworks are hoisted on the main keels. The cavity formworks are supported by placing the modularized cavity formworks which are machined and formed in a factory-like mode, and accurate and rapid installation of an upper plate of the prefabricated multi-ribbed plate is achieved by installing limiting square pipes.

The invention discloses an intelligent concrete automatic curing system and method based on real-time monitoring, and the system comprises a multi-parameter sensing module which collects the environment parameters and internal structure parameters of a concrete structure through a plurality of sensors and label identification codes, and an edge calculation module which is used for carrying out the preprocessing, feature extraction and emergency decision-making of collected data. The cloud intelligent module is used for storing data, establishing a prediction model and generating a dynamic maintenance strategy; the maintenance execution module is used for adjusting and executing spraying, temperature control or crack repair operation according to the maintenance strategy; by integrating structural strain, crack detection and environment air pressure monitoring, the limitation of traditional single temperature and humidity monitoring is broken through, multi-dimensional sensing and accurate diagnosis of concrete are achieved, meanwhile, the system combines a physical model and a data driving model, the self-adaptive optimization capability is achieved, and the system is suitable for large-scale popularization and application. And the edge gateway is adopted to process emergencies, and the cloud platform is responsible for global optimization, so that the system gives consideration to the real-time performance and the calculation depth, and the maintenance efficiency and the concrete quality are effectively improved.

The invention discloses a large-span truss hoisting and splitting system and method based on digital twinning, and belongs to the technical field of building construction, and the system comprises a physical entity unit, a data acquisition and transmission unit, a digital twinning model unit, a function service and data analysis unit and an application and interaction unit. According to the invention, through real-time sensing of a physical entity state, multi-source data fusion transmission, high-precision digital twinning modeling, intelligent simulation analysis and decision optimization, and fusion of multi-modal man-machine interaction, a virtual control system which is in whole-course synchronous mapping and bidirectional interaction with a physical entity is constructed; according to the method, real-time visual monitoring, trend prediction and risk early warning of the hoisting and splitting process can be achieved, scheme preview and dynamic optimization are supported, virtual-real fusion operation guidance is achieved through the AR technology, and the safety, precision and efficiency of hoisting and splitting operation of the large-span truss are improved.

The invention relates to the technical field of building steel structure construction, and provides a closed-loop control method for segmented construction of a special-shaped curtain wall steel structure, and the method comprises the steps: S101, carrying out the three-dimensional scanning of a to-be-installed component and a supporting jig frame, building a coordinate system through a positioning target, and obtaining point cloud data; step S102, extracting component splicing key points, matching point cloud with a design model, performing collision detection and generating pre-splicing positioning data; s103, converting the positioning data into a visual instruction, and guiding the component to be accurately in place in combination with the real-time hoisting data; s104, after installation, a seam area is scanned, and a new entering component is reinspected; s105, the step S102 to the step S104 are repeated until all the components are installed; and S106, integrally scanning to generate a completion model, comparing the completion model with the design model, and outputting a construction quality acceptance report. According to the technical scheme, the construction precision, efficiency and construction quality of the special-shaped curtain wall steel structure are collaboratively optimized by constructing a closed-loop control process.

The invention relates to the technical field of concrete curing, in particular to a concrete crack risk prediction and curing system based on thermo-acoustic coupling indexes. According to the scheme, a temperature field and an acoustic emission signal are synchronously acquired through the multi-modal data acquisition module; a thermal diffusion shear index and an acoustic emission energy density are calculated by a multi-modal data fusion module, and are fused into a unified thermo-acoustic coupling factor to quantify a cross-scale risk; the structural constraint compensation module corrects the factor by using pre-stored constraint information to generate a final risk index; the self-adaptive maintenance decision-making module maps a dynamic maintenance strategy according to the indexes; and finally, the maintenance robot executes precise maintenance operation. The technical problems that macroscopic thermal stress and microcosmic damage signals cannot be evaluated in a unified mode, different-source data are difficult to fuse, and high-constraint area risk identification is inaccurate are solved, and continuous prediction and self-adaptive cooperative control of cracks from a potential stage to an initiation stage are achieved. And the accuracy and the intelligent level of early-age crack prevention and control of the concrete are remarkably improved.

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 provides a seamless construction method and system for an ultra-long reinforced concrete structure, and relates to the technical field of concrete structure construction.The method comprises the steps that the length of the ultra-long reinforced concrete structure is judged, and when the one-way length of the structure is larger than a preset seamless control length threshold value, a target structure area is recognized; structural shrinkage deformation and temperature deformation analysis is carried out, and a target expansion reinforcing band is determined; determining a target concrete mix proportion decision; and after shrinkage-compensating concrete is poured, the construction state of each construction section is monitored in real time, the mixing amount of the expanding agent and the pouring sequence are fed back and adjusted, and seamless continuous construction is completed by alternately pouring internal and external concrete. The technical problems that in the prior art, post-cast strip construction is generally adopted and can only be carried out after initial concrete shrinkage is basically stable, the whole construction period is remarkably prolonged, the influence of external factors is likely to happen, and the construction period is further delayed are solved.

The invention relates to the technical field of building materials, in particular to a fabricated ALC light wallboard and a mounting method thereof.The fabricated ALC light wallboard comprises a bottom support unit arranged on the ground, the bottom support unit comprises a bottom support frame arranged on the ground, the bottom support frame is of a U-shaped structure with an upward opening, and a plurality of clamping parts are mounted on the front side wall and the rear side wall of the bottom support frame; the assembly type ALC light wallboard further comprises a plurality of wallboard units, and the wallboard units are evenly distributed on the bottom support unit. According to the wallboard bodies, the clamping protrusions are matched with the clamping grooves, the elastic clamping structures of the buckling parts and sealant are combined, the adjacent wallboard bodies can be rapidly connected, smearing of a traditional binder and waiting for solidification are not needed, positioning installation of the bottom supporting units and the top supporting parts is completed through preset drilled holes and standardized connecting pieces, and the installation efficiency is greatly improved. And the limiting plate and the back shore frame are matched to synchronously limit the installed wallboard body, repeated adjustment is avoided, and the overall construction efficiency is improved.

The invention discloses a unit type curved surface curtain wall installation device and method, and relates to the technical field of curtain wall construction, and the unit type curved surface curtain wall installation device comprises a plurality of detection units which are respectively installed on each control point on a unit structure body and are used for detecting actual measurement coordinates of the corresponding control points; the fine adjustment mechanism is connected to the lower end of the hoisting belt of the crane and is used for finely adjusting the position of the unit structure body; the control module is electrically connected to the detection unit and the fine adjustment mechanism; wherein the control module is configured to obtain actual measurement coordinates of each control point fed back by the detection unit; comparing the actually measured coordinates of each control point with pre-stored theoretical coordinates in a BIM model to obtain a deviation value of each control point; performing overall pose analysis based on the deviation value to obtain a pose deviation of the unit structure body in the space; generating a movement control quantity corresponding to each control point based on the pose deviation; and sending a movement control instruction to the fine adjustment mechanism according to the movement control quantity. The installation method has the effect of improving the installation efficiency.

The utility model discloses a length-adjustable concrete spreader, which relates to the technical field of concrete spreader, and comprises a support mechanism, a conveying pipeline, a cross arm and an adjusting mechanism, the adjusting mechanism comprises a connecting pipe, an adjusting assembly and a telescopic assembly, connecting flanges are arranged at the two ends of the connecting pipe, the adjusting assembly is arranged at one end of the connecting pipe and comprises an adjusting pipe and an adjusting bolt, the adjusting pipe is inserted into one end of the connecting pipe, an adjusting flange is arranged at one end of the adjusting pipe, and the adjusting bolt is inserted into the adjusting flange and the connecting flange. The telescopic assembly comprises a telescopic pneumatic rod and a moving pipe; the telescopic pneumatic rod is arranged on the side face of the connecting pipe, the movable pipe is inserted into the adjusting pipe, a movable flange is arranged at one end of the movable pipe, and the pneumatic driving end of the telescopic rod is fixedly connected with the movable flange. The length of the conveying pipeline is adjusted by designing an adjusting structure, the construction range is expanded, the installation fault tolerance is improved, and incomplete pouring caused by too large installation deviation is avoided.

The invention provides a fair-faced concrete forming quality control method, belongs to the technical field of fair-faced concrete, and realizes real-time monitoring of a template deformation state by establishing a component geometric dimension reference coordinate system and a template deformation monitoring network. A deep learning model based on a ResNet residual network architecture is adopted to predict dynamic lateral pressure distribution in a concrete pouring process, a deformation compensation algorithm is utilized to accurately calculate a deviation value between an actual size and a design size of a component, a concrete surface quality evaluation system is established to identify surface defects, and a defect distribution matrix is established; and a quality control feedback adjustment mechanism is executed to dynamically optimize and adjust process parameters of subsequent pouring operation, and the technical problem that the geometric dimension precision of a component is difficult to control due to the fact that the formwork deforms under the lateral pressure effect of concrete is solved.

The invention provides an intelligent positioning system for precise butt joint of fabricated building components, and belongs to the technical field of fabricated building construction. The system comprises a multi-source heterogeneous sensing module, an intelligent positioning host, an execution adjustment module, a BIM cooperation module and an environment adaptive calibration module. The multi-source heterogeneous sensing module is integrated with a laser radar, a visual sense, a UWB and an attitude sensing unit, and data synchronous acquisition is realized through a self-created time synchronization mechanism; the intelligent positioning host adopts a three-layer architecture of preprocessing, feature fusion and decision output, and processes data in combination with improved Kalman filtering and a dynamic deviation correction model; the execution adjustment module realizes six-degree-of-freedom posture adjustment based on a cross type hydraulic driving structure, and is matched with force feedback compliant control; the BIM collaboration module constructs twin mapping and generates a deviation thermodynamic diagram; and the environment self-adaptive calibration module realizes quick calibration of environment abrupt change. The problems that traditional positioning is low in precision, poor in efficiency, weak in environment adaptability and the like are solved, and the method is suitable for precise butt joint of various assembly type components.

The invention relates to the technical field of construction methods, in particular to a large-angle inclined steel column self-balancing construction method based on BIM. Comprising the following steps that a database containing steel column parameters, environment parameters and construction parameters is built through a BIM model, and the temperature change value, the instantaneous wind speed, the steel column real-time stress and the hoisting section weight in the construction process are collected in real time; based on the database and the real-time collected data, a torque deviation calculation model under the temperature and wind power coupling effect is established, and the dynamic adjustment amount of the lifting point is deduced according to a deviation value output by the model; calculating a real-time counterweight compensation amount in combination with the lifting point adjustment amount and a stress accumulation effect of previous construction; and according to the balance weight compensation amount, the hoisting posture of the steel column is dynamically regulated and controlled, self-balance control in the construction process is achieved, and the problem that a traditional static method cannot adapt to dynamic stress changes can be solved.

The application relates to the field of building technology, in particular to a post-tensioned prestressed seamless concrete floor construction method. In the construction preparation step, a strain sensing sensor is arranged, and a steel strand with a protective sleeve is arranged; in the concrete pouring step, concrete with good early strength is adopted; in the prestressed tensioning step, the stress and tension are monitored through a preset sensor, the strain value when the floor first cracks is determined, the initial value for starting the tensioning device is determined, and the tensioning device is controlled to start tensioning operation. Subsequent control is realized through a control system according to the information monitored by the sensor and the instruction control, and the preset threshold value is preferably less than the initial value for starting the tensioning device, so that the tensioning is started before the internal stress of the concrete is insufficient to cause cracks, and the tensioning process is effectively controlled before the cracks are generated, so that the floor is ensured not to generate cracks.

The invention relates to the technical field of intelligent installation control systems, in particular to a steel structure installation method, system and equipment based on laser scanning and BIM fusion. According to the steel structure installation method based on laser scanning and BIM fusion, the three-dimensional point cloud data of the component is obtained through laser scanning, the three-dimensional point cloud data and a BIM theoretical model are compared and analyzed, and the actual state of the component is accurately mastered; the construction site is scanned according to the actual deviation value of the component, and spatial data of the installation position are obtained; importing the actually measured data and the field data of the component into a BIM system for virtual pre-assembly, and generating installation guidance parameters; in the installation process, a monitoring system is established based on the guiding parameters, the component position change is tracked in real time, and an adjusting instruction is generated. Precise control over the whole steel structure installation process is achieved, and the construction efficiency and the installation quality are improved.

The invention provides a method for controlling the precision of an inner molded surface of a cast-in-place slab hung below a net rack, and belongs to the technical field of wind tunnel construction.The method comprises the steps that a C-shaped clamping piece and a sensor system are installed on a net rack lower chord, a monitoring network is established, fatigue characteristic data are analyzed through a minimum cut algorithm, and a load imbalance coefficient is calculated; a high-precision adjustable suspender and a prestress adjusting device are installed to construct a dynamic supporting system, a three-level precision compensation mechanism is established to achieve preventive compensation before construction, real-time monitoring compensation in the construction process and corrective compensation after pouring is completed, and multi-target collaborative optimization is achieved through a dynamic adjusting algorithm and a game optimization model. A complete technical system including fatigue point prediction, load redistribution and precision real-time control is formed, and the technical problem that in the construction process of hanging the cast-in-place slab under the net rack, the plane precision control lacks a systematic dynamic adjustment mechanism is solved.

The utility model discloses a template embedded type dam face permanent heat preservation protection module. Comprising a heat preservation core layer, a facing anti-seepage protection layer is arranged on the side, close to a concrete pouring formwork, of the heat preservation core layer, an internal pressure-bearing protection layer is arranged on the side, close to dam surface layer crack limiting steel bars, of the heat preservation core layer, and a thermal broken bridge supporting keel is arranged in the heat preservation core layer; an anchoring device is arranged in the area between the internal pressure-bearing protection layer and the dam surface layer crack limiting steel bars. The modular prefabrication and construction method is adopted, the prefabrication and installation method of a single module is simple and efficient, details such as anchoring protection measures are fully considered, the engineering construction operability is high, convenience and high efficiency are achieved, and the construction time of the heat preservation layer is greatly saved.

The application provides a glass curtain wall construction device based on green building, and relates to the technical field of building construction. The glass curtain wall construction device is arranged on a basket to move the glass. The glass curtain wall construction device comprises a mobile lifting support unit arranged on the basket, a sliding rod horizontally sliding and rotationally connected to the mobile lifting support unit, a horizontal driving part with a driving end connected to the sliding rod to drive the sliding rod to rotate, and a fixing assembly rotationally connected to one end of the sliding rod, wherein the fixing assembly comprises a suction cup pressing on the glass. The application also provides a construction method of the glass curtain wall construction device based on green building. The application can help the workers to relatively quickly move the glass from indoors to outdoors and complete the installation, thereby improving the problem that the workers have to exert a large amount of physical strength when installing the glass in the prior art, and the workers on the outer wall are inconvenient to exert force.

The invention discloses an I-shaped column-full dry type connection RC beam column joint and a connection method, and belongs to the technical field of building structure engineering. The joint comprises a prefabricated I-shaped column, a stepped beam, a shear connector and a U-shaped connecting steel plate. A long bracket and a short bracket are respectively arranged at the top and the bottom of the I-shaped column; the end part of the step-shaped beam is in an inverted step shape and is provided with an extending section; the shear connector is a long-strip-shaped steel member provided with a screw rod; and the U-shaped steel plate is provided with screw holes which are respectively matched with the shear connector and the beam end screw. During connection, rapid assembly is achieved in the mode that the brackets of the upper column and the lower column are in lap joint, shear key grooves are interlocked, the shear connectors penetrate into the square holes, the beam bodies are supported on the combined brackets, and finally the U-shaped steel plates are used for anchoring. According to the joint, complete dry type operation is achieved, cast-in-place concrete and steel bar welding are not needed, the construction efficiency is remarkably improved, wet operation is reduced, loads can be borne after installation, the overall performance is reliable, and the development requirement of fabricated buildings is met.

The utility model relates to the technical field of building hoisting, and provides a combined type double-body steel sliding beam hoisting seat which is installed on a hoisting platform, at least two guide beams are arranged at the top of the hoisting platform, the combined type double-body steel sliding beam hoisting seat comprises a steel sliding beam with a hoisting hole, and a first guide clamping groove matched with the outer sides of the guide beams is formed in the bottom of the steel sliding beam. A lifting rope penetrates through the lifting hole; the guide seats are fixedly connected with the steel sliding beams, and second guide clamping grooves matched with the outer sides of the guide beams are formed in the bottoms of the guide seats; and the driving element is connected to one side of the steel sliding beam so as to drive the steel sliding beam to slide. The anti-overturning performance of the combined type double-body steel sliding beam hanging seat is greatly improved, and the requirement for stable sliding of the hanging seat is met.

The invention provides a construction method of a CRTS III type slab ballastless track, and relates to the technical field of high-speed rail construction, and the construction method comprises the following steps: mounting base plate steel bars, side forms, end templates and limiting groove templates, placing foam plates at expansion joints, and reserving track slab pressing and anchoring holes; base plate concrete is poured, and base plate concrete formwork removal, surface finishing, maintenance and expansion joint construction are carried out after pouring; constructing a geotextile isolation layer and an elastic cushion layer; limiting groove steel bars and self-compacting concrete layer steel bar meshes are installed, and track plates are placed; before and after the track plate and the base plate are fastened by the pressing device, the track plate is finely adjusted by the fine adjustment device; and a self-compacting concrete formwork is installed, self-compacting concrete is poured, and post-pouring treatment and curing are conducted. The track plate and the base plate are fastened through the pressing device, so that the track plate, the base plate and the self-compacting concrete layer are tightly attached in the self-compacting concrete pouring period, and the situation that reworking or track laying is difficult due to the fact that the floating amount of the track plate is too large is avoided.

The invention discloses a concrete cantilever structure pull-up formwork construction method which is characterized by comprising the following steps: load calculation and component model selection; pre-burying the U-shaped bolts; pre-burying the upper-section pull rod; i-shaped steel end connecting plates are welded, and double-layer angle steel connecting plates are welded to the cantilever ends of the I-shaped steel; i-shaped steel cantilever girders are installed; assembling a pull rod system; the pull rods are fastened and leveled with a system, the two pull rods are synchronously fastened, the double rods are ensured to simultaneously advance and retreat during adjustment of an adjusting device, and a level gauge is used for observation and leveling after initial adjustment; the formwork frame and the safety enclosure are installed; pull rod pre-tensioning and deflection monitoring are carried out, pre-tension force is applied through an adjusting device, the deflection of the cantilever end is detected, monitoring points are arranged, and a deformation early warning mechanism is established; regulating and controlling concrete pouring; and removing the mold and recycling. The overhanging structure is high in anti-overturning capacity and suitable for large-span and special-shaped overhanging structures, and the safety is remarkably improved.

The invention provides a method and a device for installing, positioning and monitoring a laminated slab in a beam. Relates to the technical field of building construction. According to the specific implementation scheme, the method comprises the steps that reverse modeling is conducted on a prefabricated laminated slab component through laser scanners placed at multiple target positions, and a point cloud model is generated; inputting preset data of the prefabricated laminated slab component into the building information model to generate a target preset model; and the point cloud model is matched with a target preset model, and when it is detected that the matching degree of the point cloud model and the target preset model is smaller than a first preset threshold value, multiple installation point positions for beam-entering installation of the prefabricated laminated slab component and normal state parameters of the multiple installation point positions are determined based on the point cloud model and the target preset model. According to the technical scheme, the accuracy and construction efficiency of installation and positioning of the laminated slab into the beam can be improved, structural hidden dangers caused by installation dislocation are avoided, it is guaranteed that the laminated slab and the beam form a reliable overall stress system, and the stability and safety of a building structure are enhanced.

The invention discloses a large-span steel structure corridor overall lifting rapid installation system and technology. The installation system comprises an inclination angle monitoring module, a steel truss end displacement detection module, a data monitoring module, a detection early warning module and an early warning removing module. According to the inclination angle monitoring module, a high-precision inclination angle sensor is pasted to the middle position of a truss, the inclination angle theta of the steel truss is monitored in real time through the high-precision inclination angle sensor, the sensor is connected with a PC terminal, and inclination angle data are received in real time. Therefore, the construction progress is accelerated, and the construction cost is reduced; the synchronism of the large-span steel truss in the whole lifting process can be accurately monitored; the working procedures of pausing lifting and measuring every time lifting is conducted by a certain distance in the traditional construction process are omitted, continuous lifting is achieved, and the construction quality and efficiency are improved.

The utility model relates to the technical field of bridge inhaul cables, in particular to a stress adjusting bridge inhaul cable structure which comprises an upper bearing beam, a lower bearing beam and an adjusting assembly, the upper bearing beam is located below the lower bearing beam, a round hole is formed in the surface of the upper bearing beam, and the inner wall, located in the round hole, of the upper bearing beam is fixedly connected with an upper hanging head. A mounting hole is formed in the surface of the lower bearing beam, a lower hanging head is fixedly connected to the position, located on the inner wall of the mounting hole, of the lower bearing beam, the adjusting assembly is arranged on the lower surface of the upper bearing beam and comprises a guide column, and the guide column is fixedly connected to the upper surface of the lower bearing beam. According to the utility model, the adjusting assembly is arranged, so that the stress of the inhaul cable can be adjusted in real time in different load states in the operation process of the bridge, the stress of the inhaul cable is ensured to be uniform and within a safe stress range, premature fatigue damage of the inhaul cable caused by local stress concentration is avoided, the service life of the inhaul cable is prolonged, and the safety of the bridge structure is further ensured.

The invention relates to the technical field of beam bridge splicing, in particular to a large-span concrete continuous beam bridge splicing construction method based on intelligent construction. The method comprises the following steps: acquiring digital modeling data of a left bridge and a right bridge to be spliced; analyzing the digital modeling data, and determining the dynamic stress distribution of the whole construction process; acquiring deformation monitoring data in real time, analyzing the deformation monitoring data, and determining a coordinated deformation rule of the left and right bridges; and generating a splicing construction scheme according to the dynamic stress distribution and the coordinated deformation rule. And the decoupling problem of a digital model and a physical entity is eliminated. The problem of stress control blind areas is solved, stress space-time evolution is quantified, it is ensured that stress prediction covers all stages of construction, and the blind areas of a conventional static model are avoided. The problem of quantitative deficiency of the coordination deformation rule is solved, and the defect of neglecting the deformation coordination is avoided. The problem of construction decision lag is solved, the structural damage probability and temperature cracks are reduced, and coupling of construction execution and a physical mechanism is ensured.

The invention relates to the field of assembly automation and flexible manufacturing, and discloses an assembly method for a prefabricated firewall of a transformer substation, and the method comprises the following steps: setting a plurality of space positioning reference points at the edge of a wallboard; acquiring three-dimensional coordinate data to form a first point set and a second point set; calculating an initial rigid body transformation parameter between the wallboards according to the first point set and the second point set; establishing an energy functional for describing a total error; carrying out minimization solution on the energy functional by adopting a variational method to obtain an optimal disturbance vector field; according to the optimal disturbance vector field, a plurality of fine adjustment actuators of the wallboard are controlled, posture fine adjustment is conducted, and physical assembly connection of the wallboard and the target wallboard is completed. According to the invention, accurate attitude estimation and error correction in the wallboard assembly process are realized; the robustness and geometric fitting capability of the assembly process are improved; the assembly precision and efficiency are remarkably improved, and the problem that traditional redundancy control distribution is unstable is solved.

The invention discloses a windproof high-stability communication iron tower, and relates to the technical field of communication iron towers, the windproof high-stability communication iron tower comprises an iron tower body, a lifting assembly and a supporting assembly, in gale weather, a limiting unit relieves limiting of a lifting limiting block, a lifting mounting column vertically moves downwards, and a second tower body is driven to move downwards; the height of the second tower body is reduced, wind force borne by a signal communication device on the second tower body is reduced, the signal communication device is prevented from being damaged by wind blowing, the gravity center of the iron tower body is lowered due to lowering of the position of the second tower body, and the stability of the iron tower body is improved; when a lifting mounting column moves downwards, a lifting annular plate moves upwards, and when the lifting annular plate moves to the highest position, a locking unit can limit and fix the position of a movable connecting rod, so that the movable connecting rod is fixedly connected with a rotary supporting sleeve, the position of a supporting annular plate is fixed, and a plurality of supporting units support a first tower body; the anti-wind capacity of the first tower body is improved, and the anti-wind stability of the iron tower body is improved.

The invention relates to the technical field of concrete bubble monitoring, in particular to an aluminum film system concrete bubble dynamic monitoring and regulating method which comprises the following steps: applying a high-frequency alternating current with a first preset parameter to an aluminum film system to induce eddy current in an aluminum film and enable the aluminum film to generate thermally induced acoustic vibration; meanwhile, an eddy current thermally induced acoustic response signal reflected by an internal interface of the concrete is obtained; based on the response signal, determining current bubble state information in the concrete, including amplitude attenuation characteristics based on the sound pressure signal, frequency spectrum characteristics based on the sound pressure signal and phase delay information; and based on the bubble state information, a regulation and control instruction of a second preset parameter is generated, the regulation and control instruction is executed to adjust the parameter of the high-frequency alternating current applied to the aluminum film system, and directional traction regulation and control are conducted on the bubbles in the concrete. According to the invention, by means of an eddy current thermally induced sound technology, dynamic distribution, including the number, the particle size, the motion trail and the like, of bubbles is captured in real time, and instantaneous changes in the pouring process can be accurately reflected.

The utility model relates to the technical field of constructional engineering, and discloses structural gap grouting equipment for constructional engineering construction, which comprises a base, a grouting mechanism is arranged at the top of the base, the grouting mechanism comprises a box body and a pump machine, the box body and the pump machine are both fixedly connected with the base, the input end of the pump machine is communicated with the base, and the output end of the pump machine is communicated with the base. The output end of the pump machine communicates with a grouting pipe through a hose, and a moving mechanism is arranged in an inner cavity of the base. By arranging the grouting mechanism, slurry condensation can be avoided, a grouting pipe can be conveniently used for grouting by opening a pump, the device is convenient to move by arranging the moving mechanism, a user can conveniently push the device by pushing a handle, the grouting pipe can be fixed by arranging the adjusting mechanism, and the grouting pipe can be driven to rotate by opening a third motor. The grouting direction can be adjusted conveniently, the height of the grouting pipe can be adjusted by starting the first motor, grouting can be conducted on ceilings, floors and vertical joints, and use is convenient.