116results about How to "Improve construction accuracy" patented technology

The invention discloses a special-shaped steel structure curtain wall construction method based on BIM + three-dimensional scanning, and belongs to the field of building construction, and the construction method comprises the following specific steps: I, carrying out three-dimensional laser scanning on a special-shaped steel structure main body; iI, post-processing scanning point cloud data; iII, reversely establishing a special-shaped steel structure entity model by using the processed point cloud data; iV, performing comparative analysis on the point cloud model of the main body structure and the BIM model; the method can solve the problem of poor installation effect caused by certain deviation between the traditional curtain wall production and installation and an on-site main body, can carry out scanning modeling on a building main body of a special-shaped steel structure, can carry out precision comparison with an original design drawing, and can import model data into a total station to realize automatic lofting; and meanwhile, the construction precision and the construction efficiency are remarkably improved, the reworking problem caused by inaccurate installation is effectively avoided, and therefore the engineering quality is improved.

The invention discloses a wireless monitoring system for real-time deformation of a negative ring segment during shield tunnel starting tunneling, which comprises a standard block, an adjacent block and a top sealing block which are mounted on the negative ring segment, and a data acquisition system for monitoring corner deformation in X, Y and Z directions generated by the negative ring segment; the data post-processing system comprises a local server and is used for cleaning and pre-processing the monitoring data and calculating deformation data by applying a corresponding algorithm in the local server; the visual monitoring system is used for carrying out three-dimensional visual dynamic display on the negative ring duct piece according to the deformation data and the accumulated deformation data; when the threshold value is exceeded, alarm processing is carried out. The system has the beneficial effects that real-time automatic acquisition, remote wireless data transmission and remote real-time monitoring and early warning of negative ring duct piece deformation during shield tunnel starting tunneling can be achieved, and the requirement for shield attitude control during shield tunnel starting tunneling construction is met.

The invention provides a hollow slab internal mold construction system, and relates to the technical field of building construction. A first construction result acquisition module; the initial construction parameter optimization module is used for scanning the first construction result through a laser scanner, analyzing and determining first concrete compactness deviation and first construction deviation, optimizing initial construction parameters and determining first optimal construction parameters; and the construction operation module is used for executing the construction operation of the second pouring interval according to the first optimal construction parameters until the preset construction period is completed. By means of the method, the technical problems that in an existing method, due to the fact that accuracy and timeliness of construction parameter regulation and control are insufficient, overall construction errors are seriously accumulated, and overall construction quality is affected can be solved, pouring parameters and vibration parameters can be rapidly and accurately adjusted, construction management and control fineness and intelligence are improved, and construction efficiency is improved. Therefore, the problem of construction regulation lag is effectively solved, and the construction precision and the construction quality are remarkably improved.

The invention belongs to the technical field of building robots, and particularly discloses a self-propelled reinforcing steel bar binding robot moving chassis and method, the moving chassis comprises a cross-layer inverted-T-shaped rack assembly, an environment sensing and automatic control assembly is arranged at the top end of the cross-layer inverted-T-shaped rack assembly, and a step-by-step lifting transverse propelling assembly is arranged at the bottom end of the cross-layer inverted-T-shaped rack assembly; self-adaptive high-position longitudinal moving assemblies connected with the cross-layer inverted-T-shaped rack assembly are arranged on the two sides of the environment sensing and automatic control assembly at intervals. Two pairs of driven double-hub wheel assemblies connected with the cross-layer inverted-T-shaped rack assembly are arranged on the two sides of the step-by-step lifting transverse propelling assembly in a clearance mode. The mobile chassis of the self-propelled reinforcing steel bar binding robot can automatically and stably walk on complex reinforcing steel bar mesh surfaces with different sizes and specifications, so that the construction efficiency of reinforcing steel bar binding operation is greatly improved, and the construction period is remarkably shortened.

The invention relates to the field of data processing, in particular to a shield tunneling machine tunneling efficiency analysis method and device based on big data, and the method comprises the steps: obtaining geological parameters, and determining the type of a cutting head of a shield tunneling machine and initial tunneling parameters; controlling a shield tunneling machine to perform tunneling and deslagging according to the initial tunneling parameters, and acquiring tunneling data in real time; performing tunneling efficiency evaluation; judging whether an expected standard is reached or not according to a tunneling efficiency evaluation result, and if the expected standard is not reached, updating tunneling parameters; controlling the shield tunneling machine to continue tunneling and deslagging according to the updated tunneling parameters; comparing the tunneling data before and after the tunneling parameters are updated, and analyzing the change condition of the tunneling efficiency; if the speed increasing amplitude is smaller than the preset amplitude, correcting the updated data; and if the speed increasing amplitude is larger than or equal to the preset amplitude, the updated tunneling parameters are continuously used for controlling the shield tunneling machine to continue tunneling and deslagging. Through dynamic adjustment and a real-time feedback mechanism, the tunneling efficiency and the construction precision are improved.

The invention discloses an adjustable continuous beam cantilever construction monitoring system. The system comprises the following steps: S1, collecting data in a construction process; s2, performing decoding, filtering and digital processing to generate an original monitoring data set; s3, performing error correction and optimization on the original monitoring data set based on a Kalman filtering algorithm to obtain an optimized monitoring data set; s4, analyzing and optimizing the monitoring data set by adopting a support vector machine algorithm, and generating a construction adjustment instruction; s5, performing time sequence analysis and pattern recognition on the optimized monitoring data set, and detecting potential construction risks; and S6, receiving a construction adjustment instruction and a construction early warning signal, and dynamically adjusting the working parameters of the construction equipment. The system has the advantages of being high in data processing precision, high in real-time performance and high in construction safety.

The utility model discloses a prefabricated diaphragm wall type assembled subway entrance and exit structure which comprises side wall structures, a prefabricated top plate and a prefabricated bottom plate are arranged between the side wall structures of the entrance and exit, the prefabricated top plate and the prefabricated bottom plate are both connected with the side wall structures through ultrahigh concrete, and the side wall structures are formed by integrating an enclosure structure and a main body structure. The side wall structure comprises prefabricated underground diaphragm walls, and underground diaphragm wall inter-amplitude connecting assemblies are arranged between the adjacent prefabricated underground diaphragm walls. The foundation pit support structure, the waterproof curtain and the side wall of the main body structure are integrated, so that working hours and manufacturing cost are saved. According to the utility model, the connection scheme of the waterstop strip bags, the C / T inter-width connectors and the UHPC concrete wet joints is adopted between the prefabricated underground diaphragm walls, so that the waterproof and guiding effects are achieved. According to the utility model, the longitudinal tensioning connection scheme of the inter-width concave-convex tenons, the elastic sealing gaskets and the prestressed steel bars is adopted between the prefabricated plate widths, so that not only can shearing force be effectively transmitted, but also a water stopping effect can be achieved.

The invention discloses a design method of a special-shaped large-section annular prestressed beam based on a finite element model, and relates to the technical field of civil engineering. The problems that due to the fact that a special-shaped ring beam is symmetrically arranged and tensioned, local stress is uneven, local concrete cracks possibly occur, and the stability of the whole structure is affected are solved. Through the finite element model and the finite element analysis technology, in combination with the specific stress characteristics of the special-shaped large-section ring beam, optimized arrangement of the prestressed tendons is achieved, the stress uniformity and stability of the structure are ensured, asymmetric prestressed tendon arrangement can be flexibly adjusted according to specific engineering requirements, the tension values borne by the section are consistent, and the construction efficiency is improved. According to the ring beam tensioning method, the integrity of the tensioned ring beam is better, the construction precision and economical efficiency of the structure are improved, risks in the construction process are effectively reduced through step-by-step construction and application of the life and death unit technology, and the construction efficiency and the structure safety are improved.

The invention discloses an embedded part positioning and adsorbing device and an embedded part construction method, and relates to the technical field of embedded part construction.The embedded part positioning and adsorbing device comprises a frame, powerful magnets are installed on the frame, and the frame is used for being attached to a wood formwork and corresponds to an embedded part on the other side of the wood formwork; therefore, the embedded part is adsorbed and attached to the wood formwork. By the adoption of the technical scheme, the embedded part is attracted through the powerful magnet, the embedded part is made to be tightly attached to the wood formwork, then the surface of the embedded part after concrete solidification can be flush with the surface of the concrete, follow-up construction precision is improved, the overall scheme is simple, cost is low, and the good result rate is achieved.

The invention discloses a BIM (Building Information Modeling)-based piping shaft casing pipe construction method, which comprises the following steps of: acquiring three-dimensional point cloud data of an internal structure of a piping shaft by utilizing laser scanning equipment, and converting the three-dimensional point cloud data into a BIM model through three-dimensional modeling software; restoring the existing pipeline layout in the BIM model by using a reverse engineering method; optimizing the casing design according to the prediction result, and simulating the installation process in the BIM model; generating a construction guide with an augmented reality mark; displaying superposition of the virtual model and the real environment through AR glasses; after the installation is completed, performing three-dimensional scanning by using laser scanning equipment, and comparing with original data to evaluate the precision; if it is found that the deviation exceeds a preset threshold value, simulating a repairing scheme through a BIM model and converting the repairing scheme into a field executable instruction; and finally, the sleeve is accurately adjusted through a customized fine adjustment tool until the deviation is controlled within a preset range, and repairing is completed. The problem that the pipeline and the wall surface are difficult to repair in a narrow space is solved, and the construction precision and efficiency are improved.

The invention discloses an overhead transmission line pay-off control method and system based on multi-source parameter perception, and the system comprises a sensing subsystem which collects the load and posture of a pay-off pulley, the posture and geographic positioning of a walking board, and the sag of a pay-off segment observation gear lead, and employs the collected data as the parameter induction quantity of a field pay-off process; the network subsystem is used for integrating the parameter induction quantity acquired by the sensing subsystem through a wireless ad hoc network to obtain a multi-device parameter value and transmitting the multi-device parameter value to the execution subsystem; and the execution subsystem is used for judging the obtained multi-device parameter values, and realizing the automatic unwinding of the overhead transmission line conductor based on multi-source parameter perception through automatic output adjustment of the stretching device.

The invention relates to the technical field of bridge rectangular pier body pouring, and discloses a bridge rectangular pier body steel bar positioning clamp which comprises a mounting frame. The four mounting openings are formed in the mounting frame, and each mounting opening is of a long-strip-shaped structure; the latches are fixed in the four mounting ports respectively, and the latches located in the same row jointly form a zigzag structure; the sliding seats slide in the four mounting openings respectively, and a mounting groove is formed in the bottom surface of each sliding seat; the mounting cylinders are fixed to the top faces of the sliding seats correspondingly. By arranging the movable sliding seat, the construction flexibility and efficiency are greatly improved, and in the construction process of the rectangular pier body of the bridge, the positioning of reinforcing steel bars often needs to be accurately adjusted according to specific construction conditions and design requirements, so that the construction time and the labor cost are greatly saved.

The invention discloses a construction method of a swinging trend modeling decorative brick wall, which comprises the following steps of: deducting bricks in contact with the left side and the right side of a building facade from the whole swinging trend modeling decorative brick wall at a to-be-constructed position on the building facade, and then longitudinally dividing the whole swinging trend modeling decorative brick wall into a plurality of parameterized prefabricated brick walls; building and maintaining each parameterized prefabricated brick wall according to the design drawing parameters through a building robot; vertical components parallel to the building facade are welded through the embedded parts; the maintained parameterized prefabricated brick walls are sequentially hoisted to the to-be-constructed position of the outer facade of the building from bottom to top, block-by-block masonry construction is conducted through mortar, every two adjacent parameterized prefabricated brick walls are connected through mortar masonry, and a pull structural component is embedded into the two adjacent parameterized prefabricated brick walls; and building brick filling construction is conducted between the left side and the right side of the built and connected parameterized prefabricated brick wall and the building facade, so that the whole-face swinging trend modeling decorative brick wall is formed. The construction precision and the construction quality of the whole-surface swinging trend modeling decorative brick wall can be improved.

The utility model discloses a piling device of a piling hammer, and belongs to the technical field of piling equipment. The pile hammer driving device comprises a first driving part, a hollow connector and a second driving part. The first driven part is connected with a pile hammer. The hollow connecting body is connected with the first hitting replacing part in a welded mode. The second driving part is in welded connection with the hollow connecting body and is in contact with the pile during driving. Rail grooves are welded to the side edges of the first driving replacing part, the hollow connecting body and the second driving replacing part which are sequentially welded, and the rail grooves and the pile hammer are located on the same rail. The piling device of the piling hammer is simple in structure and high in mounting and dismounting efficiency, accurate guidance is provided for piling construction through the design of the track grooves, and construction accuracy and construction efficiency are improved.

This invention discloses a method for overlapping construction of waterproofing systems in existing subway lines. It relates to the field of underground engineering waterproofing construction technology and includes: Step 1, current status investigation and deformation assessment; Step 2, overlapping structure system design; Step 3, key material selection and process matching; Step 4, refined overlapping construction process; and Step 5, full inspection after each process. This invention's method for overlapping construction of waterproofing systems in existing subway lines, through Step 1, involves structural deformation monitoring and analysis and diagnosis of the existing waterproofing layer; Step 2, involves deformation adaptation structure design and differential deformation compensation design; Step 3, involves material selection and process innovation; Step 4, involves base treatment, interface treatment, expansion joint and node construction, and reinforcement layer construction; and Step 5, involves process inspection. This method, tailored to the characteristics of existing subway lines, enables the effective combination of different waterproofing materials, adapts to continuous deformation, and ensures long-term reliability.

The invention relates to the technical field of pipeline laying, in particular to a trenchless pipeline laying construction method which comprises the following steps: S1, surveying and setting out, and determining a construction position; s2, working pits are excavated, and the working pits are excavated in the two sides of the road surface correspondingly; s3, a drilling machine is placed in place, and the drilling machine is placed at a designated position; s4, guide hole drilling is conducted, specifically, the position of a guide drill bit of a drilling machine is adjusted, so that the guide drill bit drills into the soil according to a pre-designed track, and a drill hole communicating with the working pits on the two sides is drilled; s5, broaching is conducted, specifically, after the guiding drill bit reaches the expected position, the guiding drill bit is detached, a broaching drill bit is replaced, broaching is conducted through the broaching drill bit, then the broaching drill bits with the diameters increasing in sequence are sequentially replaced, broaching operation is repeatedly conducted, and the diameter of a drilled hole reaches the designed diameter; s6, pipe pulling is conducted, specifically, the pipeline is pulled into the drill hole, and the pipeline is laid at the designated position; and S7, pipeline welding. The method has the effect of avoiding adverse effects on life and traffic of residents in the construction process.

The present invention relates to the technical field of ground-connected wall construction, and in particular to a method for constructing a special-shaped ground-connected wall with mud wall protection, comprising: leveling a construction site and building a guide wall; determining a trenching construction method based on soil characteristic characterization parameters; determining a trenching size of the construction method, and determining the eligibility of the trenching size according to a verticality characterization value; under the condition that the trenching size is unqualified, determining an adjustment method for trenching construction based on a ratio of a verticality characterization value to a preset verticality characterization value; determining trenching parameters of a slotting machine based on a curvature change rate; determining the eligibility of trenching parameters based on fit; under the condition that the trenching parameters are unqualified, determining an optimization method for trenching construction based on a difference between the fit and the preset fit; completing trenching construction according to the optimized trenching parameters, hanging a steel cage, and conducting acceptance after the poured concrete is solidified. The present invention improves the efficiency of the construction process of the special-shaped ground-connected wall with mud wall protection.

The invention discloses a steel pipe column construction method and device and a storage medium. The method comprises the following steps that S1, a pile hole is constructed and formed in the position where a steel pipe column needs to be installed, and a pile casing is installed in the pile hole; s2, the universal platform is moved, and the center point of the universal platform coincides with the center point of the pile casing; and S3, the steel pipe column is fixedly installed on the tool column, the tool column is lifted to the position above the center of the universal platform and put down, the position of the steel pipe column is monitored through a wireless positioning module and an auxiliary positioning module, and when the position of the steel pipe column deviates, deviation is corrected. The wireless positioning module on the tool column and the auxiliary positioning module on the universal platform are used for monitoring the position of the steel pipe column, and when the position of the steel pipe column deviates, the deviation is corrected, so that the center of the steel pipe column coincides with the center of the universal platform and the center of the pile casing, and the tool column is in a vertical state; positioning, adjusting and lowering of the steel pipe column in the placing process are achieved, and the construction efficiency and precision of the steel pipe column are improved.

According to the H-shaped horizontal bridge frame reserved hole fixing device, through simple structural design, the positioning device and a pouring formwork are assembled for use, the position of each layer of reserved hole can be quickly and accurately positioned, the accuracy of the position of each layer of reserved hole is improved, meanwhile, the reworking cost in the later period is reduced, and the working efficiency is improved. Belongs to the technical field of building construction, and comprises a pouring template, a positioning device is fixedly arranged on the pouring template, and the positioning device comprises a bottom plate; a plurality of positioning holes are formed in the upper end surface of the bottom plate; a clamping assembly is fixedly arranged on the upper end face of the bottom plate. A center hole is formed in the center of the upper end face of the bottom plate.

The invention provides a construction method for a waffle plate with a detachable whole cylinder, and belongs to the technical field of waffle plate construction.The construction method for the waffle plate with the detachable whole cylinder comprises the steps that formwork matching is conducted on the construction position of the waffle plate according to a construction drawing, and vertical rod paying-off, all-round scaffold erecting, measuring marks and formwork installing are conducted on the construction position; cleaning the surface of the building template, placing a waffle template datum line, and popping an ink line; lofting is conducted according to the datum line, and a waffle cylinder base is laid; waffle plate reinforcing steel bars are bound, a cylinder body and a cylinder cover are installed, a top batten is firmly pressed, and the ends of the batten are bound and fixed to the waffle plate reinforcing steel bars; the front half part of the waffle plate concrete is poured, the top batten is dismantled when the front half part of the waffle plate concrete is half-dry, and the waffle plate concrete continues to be poured; the problems that in the construction process of the waffle plate, due to the fact that the beam height is high, the construction space is narrow, bottom steel bars are difficult to bind, and the construction progress and the construction quality are unfavorable can be solved.

The utility model relates to a wall surface metal plate mounting system which comprises a keel assembly fixed to a wall surface, the side, away from the wall surface, of the keel assembly is a mounting surface, a plurality of clamping pieces are arranged on the mounting surface, the side, away from the mounting surface, of each clamping piece is provided with a clamping groove penetrating in the vertical direction, all the clamping pieces are divided into a plurality of sets, and all the sets are arranged in the horizontal direction. The clamping pieces in the sets are sequentially arranged in the vertical direction, the clamping grooves of the clamping pieces in the sets are combined to form an assembly interval, a clamping structure matched with the assembly interval is arranged on one side of the metal plate, the extending direction of the clamping structure is consistent with that of the clamping grooves, the clamping structure is clamped in the assembly interval in a vertical inserting mode during installation, and therefore rapid positioning and stable fixing are achieved. According to the wall surface metal plate installation system, due to the fact that the clamping piece grouping arrangement and clamping assembly structure is adopted, the problems that in a traditional installation mode, abutted seams are rough, construction is complex, and gluing treatment is needed are effectively solved, and then the technical effects that metal plates are rapidly assembled, tight in splicing, attractive in appearance and suitable for standardized industrial construction are achieved.

The utility model discloses a kind of quick installation structure of assembly type concrete curb for road construction, it includes pedestal assembly, connecting assembly and locking assembly.Pedestal assembly realizes curb quick positioning by positioning groove;Connecting assembly realizes accurate butt joint of adjacent curbs using plug-in part and guide piece;Locking assembly realizes firm fixation by locking rod and locking sleeve.The present application can simplify construction steps, improve installation accuracy, enhance structural stability, while facilitating post-maintenance and reuse, with high practical value and popularization prospect.

The invention discloses an overwater pier column pouring device, which belongs to the technical field of overwater pier column pouring, and comprises a buoyancy tank platform with a positioning column at the bottom, and the left side and the right side of the top of the buoyancy tank platform are respectively provided with a mold clamping mechanism; each die clamping mechanism is composed of a first fixed rail, a movable base, a telescopic air cylinder, a stand column, a second fixed rail, an electric telescopic rod, a mounting frame, a third driving motor, a driving gear, a driven gear, a two-way threaded rod and a clamping plate. Through the design of the buoyancy tank platform and the positioning columns, the device can provide a stable working platform on the water surface, the stability and safety in the construction process are ensured, automatic positioning, clamping and height adjustment of a formwork are achieved through a telescopic air cylinder, a driving motor, an electric telescopic rod and other assemblies in the device, manual operation is reduced, and the construction efficiency is improved. The construction efficiency is improved, formwork installation and concrete pouring can be rapidly completed, and the construction period is shortened. The invention further provides an overwater pier column pouring construction method.

This invention discloses a method for identifying the connection location of underground dissimilar pipelines based on 3D image reconstruction, belonging to the field of location recognition technology. It addresses the problems of distorted spatial structure representation and insufficient accuracy in determining connection locations. By segmenting the underground pipeline, fusing ground-penetrating radar reflection data and electromagnetic detection results, abrupt gradient coefficients are calculated to mark potential material abrupt change segments. 3D scan data of the marked segments are retrieved, and combined with scan density and segment structure information, connection candidates are generated. Enhanced scanning is performed on the candidates, and the pit landing point is determined through spatial coarseness features. The existence of a connection interface is determined based on local point clouds, regional point clouds are extracted, and axis fitting is performed on the regional point clouds to obtain 3D misalignment data of the pipelines on both sides. The construction area is divided based on the soil obstacle density around the connection interface, and the connection center point is output based on misalignment constraints. This significantly improves construction accuracy and reduces the risk of blind excavation.

The invention provides a kind of buried track bed plate, track bed and its construction method, because with multiple buried vibration isolators, plate body is arranged on the basement by multiple rubber springs, adopts point support mode to cut off the rigid connection between track structure and basement structure, absorbs the impact energy when train runs, realizes vibration reduction and noise reduction.The construction method of the invention combines the concept of prefabricated building, can improve construction accuracy and effect, the plate body uses prefabricated plate, the mounting seat of buried vibration isolator is pre-buried below the plate body, during construction, only need to place the height adjusting washer and spring assembly containing rubber spring on the basement at the set vibration isolator position, then place the prefabricated plate on the basement, make the upper end of spring assembly embedded in the corresponding mounting seat, the construction of buried track bed plate can be completed, therefore, construction is convenient, short construction period, suitable for track construction on viaduct.

The invention relates to the technical field of fabricated bridge construction, and discloses a self-rotating intelligent continuous pushing device for a steel-concrete composite girder bridge, which comprises two groups of self-rotating jacking devices, each group of self-rotating jacking devices consists of four minimum units, and each minimum unit comprises a base for supporting the whole device main body, a height-adjustable vertical adjusting power component is mounted at the upper part of the base; the rotating component is installed on the upper portion of the vertical adjusting power component and used for driving a tray installed on the upper portion of the rotating component to rotate, and the surface layer of the tray is sleeved with a rubber mat used for making buffer contact with a beam bridge; the rotating component is adjusted by the vertical adjusting power component to change the inclination angle of the tray. The two sets of self-rotating jacking devices are alternately started to operate, alternate continuous propelling of a beam body is achieved through rotating friction force generated by the pushing device, the fabricated large-span steel-concrete composite beam bridge body is accurately, rapidly and safely propelled to a preset position, and the device has good application value.

The application provides a new line railway transmission and data network port intelligent planning method and system, relates to the railway communication technical field, and solves the technical problems of low efficiency, easy error and difficulty in meeting complex design specifications caused by the dependence of the existing railway communication port planning on manual experience. The method comprises the following steps: obtaining a business requirement list and a device resource list; constructing a constraint optimization model based on a preset port planning rule library; based on the business requirement list and the device resource list, the constraint optimization model is optimized and solved by a constraint optimization algorithm to obtain a port allocation result; based on the port location in the port allocation result and the physical distance between the device cabinet and the ODF frame, the tail fiber length is calculated; the port allocation result and the tail fiber length are structured and coded and integrated to obtain a port configuration account. The application is used in the new line railway transmission and data network port planning process.

The utility model relates to bridge engineering technical field, and disclose a kind of steel box girder and concrete pier column consolidation structure, including steel box girder, concrete pier column, shear nail and the adjusting member for adjusting the elevation of steel box girder installation, concrete pier column top is reserved with shear key, steel box girder bottom is equipped with for with concrete pier column top socket joint connection's notched, concrete pier column top outer circumferential wall is equipped with the slope of being inserted easily, concrete pier column top is inserted in the inside of notched, adjusting member includes jacking corbel and jack, jacking corbel is connected by bolt with the reserved planting bar on the outer wall below concrete pier column, jack is installed in jacking corbel top, jack top and steel box girder bottom are abutted. The present application is simple in structure, high in precision of factory prefabrication, force transmission is direct in socket design, stress concentration is small, and the elevation of section member is accurately adjusted, convenient for construction, applicable to complex environment and large-span bridge.

The invention relates to a building special-shaped imitation brick facing outer wall structure and a construction method, and the structure comprises a rear embedded part which is fixed on a civil engineering main body structure through an anchor bolt; the main keels comprise a plurality of vertical main keels and transverse main keels which are vertically arranged in space, and the vertical main keels and the transverse main keels are welded to the rear embedded part to form a preliminary contour positioning structure meeting the building requirement; the secondary keel is welded on the primary contour positioning structure to form a primary contour structure; the fiber board is fixed and covers the preliminary contour structure to form a quasi contour structure; the imitated red bricks are pasted on the surface of the quasi-contour structure to form an outer wall structure. Wet operation is reduced, the construction precision and quality are improved, the structural stability is enhanced, meanwhile, the lightweight characteristic is achieved, on the basis that the weight of a building is reduced, the overall energy consumption is reduced, various sizes, shapes, colors and textures can be molded, the building is clear and natural, and rich and diversified building styles can be achieved.

This utility model provides a visual cement mixing pile length positioning device, belonging to the field of cement mixing pile technology. It includes: a pile driver; a mixing rod, which is driven to rotate and extend downwards by the pile driver's drive equipment; and a marking structure movably disposed outside the mixing rod. The marking structure includes a movable ring, multiple friction wheels, a transmission structure, an infrared rangefinder, and a drive motor. The infrared rangefinder is disposed outside the movable ring and is used to measure the distance between the movable ring and the pile driver. The output end of the drive motor is connected to the shafts of the multiple friction wheels through the transmission structure. The beneficial effects of this utility model are: by setting a movable marking structure outside the mixing rod and combining it with an infrared rangefinder to measure the distance between the movable ring and the pile driver in real time, it solves the problem of needing to manually mark the pile outside the tower, eliminates the safety hazards of falls from heights and accidental collisions caused by manual marking, and ensures the personal safety of construction personnel.