43 results about "Cross slope" patented technology

The invention relates to the technical field of agricultural machinery, in particular to a rotary gravity center regulating crawler platform for hills and mountains, which sequentially comprises a crawler chassis assembly, a gravity center regulating assembly and a functional module mounting platform from bottom to top, the gravity center adjusting layer is installed on the chassis rack and located in the space between the crawler belts on the two sides, the gravity center adjusting layer is composed of a supporting base, a slewing bearing module, a linear lead screw module, a battery balancing weight and a machine shell, and the balancing weight is preferably a power battery pack; and the functional module mounting platform is fixed at the upper end of the gravity center adjusting assembly. By adjusting the angular and radial distribution of the counterweights, the center-of-gravity position of the whole machine under the working conditions of cross slopes, longitudinal slopes and obstacle crossing is changed, the stability and driving safety of the crawler belt platform in complex terrains of hills and mountains are improved, and the crawler belt platform can be provided with different functional modules according to operation objects. The method is suitable for various hilly and mountainous region agriculture and engineering application scenes.

The invention relates to the technical field of road detection, and discloses an asphalt pavement rut depth image detection and cross section reconstruction method and system, and the method comprises the steps: fusing vehicle-mounted laser, binocular images, mileage positioning and design cross slope data; a deep learning stereo matching network is adopted to densely reconstruct a road surface three-dimensional morphology point cloud; extracting a cross section curve and performing cross slope correction; calculating the depth, the area and the width of the rut by adopting a virtual ruler method; calibrating, correcting, feeding back and updating network parameters based on measured data; the system comprises a multi-source data fusion module, a deep learning stereo matching module, a cross section extraction module, a rut feature extraction module, a calibration correction module and a disease grading module, the measurement precision reaches plus or minus 1 mm, the detection speed reaches 80 kilometers per hour, and the accuracy rate reaches 95% or above.

The application discloses a vehicle control method and device on a transverse slope road, equipment and medium, relates to the field of advanced driving assistance, and comprises the following steps: acquiring the vehicle speed, yaw angular velocity and first lateral acceleration of a vehicle, determining the second lateral acceleration based on the vehicle speed and yaw angular velocity; high-order filtering the first lateral acceleration and the second lateral acceleration respectively; determining the target acceleration based on the filtered first lateral acceleration and the filtered second lateral acceleration, and high-order filtering the target acceleration; determining the transverse slope compensation torque through the filtered target acceleration and a torque compensation coefficient, so as to control the vehicle. The vehicle speed, yaw angular velocity and first lateral acceleration and other information in the application are information that can be acquired in a low-cost manner, therefore, the application reduces the calculation cost of the transverse slope compensation torque, and through high-order filtering of the lateral acceleration and the target acceleration, the application improves the smoothness of the vehicle in a curve and reduces oscillation.

The invention belongs to the technical field of vehicle sand spraying and cleaning control, and relates to a railway vehicle sand spraying and cleaning control system and a control method thereof. According to the method, whether a sanding signal and an ice surface distribution characteristic label are output or not is dynamically judged through clustering analysis based on an ice surface image of a front track section and a track cross slope angle; the sanding spraying angle is dynamically set by fusing the vehicle speed, the rail cross slope angle and the ice surface characteristics, the target sanding flow is set according to the air source pressure, and the sanding duration is determined; monitoring the deviation between the actual sanding flow and the target flow in real time, and triggering the compensation action when the deviation exceeds the limit; monitoring the pressure difference change rate of the nozzle during the sand spraying execution period and after the sand spraying is finished, and executing sand cleaning operation if the sand spraying deviates from the normal trend. The problems that an existing sanding system is inaccurate in control on an icing track, low in sanding efficiency and prone to blockage of a nozzle are effectively solved, and the effects of improving sanding accuracy and automation level, enhancing friction force between wheels and the track, guaranteeing driving safety and reducing maintenance cost are achieved.

A solid waste ecological concrete slope protection structure belongs to the technical field of slope ecological protection and comprises a slope, and a cross slope and a drainage channel are arranged above and below the slope respectively. A plurality of fence units, a first wire mesh and a second wire mesh are arranged on the slope surface of the slope, and the fence units define a solid waste filling groove on the slope surface of the slope; the second iron gauze and the first iron gauze are laid on the top face and the bottom face of the fence unit correspondingly, and the second iron gauze and the first iron gauze are connected with the fence unit through anti-disengaging nails correspondingly. A solid waste filling layer is arranged in the solid waste filling groove between the first iron gauze and the second iron gauze; a planting soil layer is laid on the top surface of the second iron gauze, and a grass seed mixture is arranged in the planting soil layer; fixing piles are further evenly distributed in the solid waste filling groove. The two layers of iron gauze restrain the solid waste filling layer, the solid waste filling grooves divide the surface area of the slope, the structure stability of the solid waste filling layer is improved through cooperation with the fixing piles, and supporting is provided for the planting soil layer.

The invention discloses a prefabricating platform and prefabricating method for an anti-collision wall of a large-overhang-wing box girder, which is characterized in that the box girder is fixed on a cross slope support and an anti-sliding support, one end of the box girder is fixed on a supporting upright post, and the other end of the box girder is connected with a box girder pedestal through a pre-stress component, so that the anti-collision wall of the large-overhang-wing box girder is prefabricated under the condition that the cross slope gradient of the box girder is kept; the box girder is obliquely pulled through the prestress assembly, the box girder is prevented from overturning and rollover due to the fact that the weight of concrete and an anti-collision wall formwork is too heavy in the anti-collision wall pouring process, meanwhile, the accuracy of the axis of the anti-collision wall can be guaranteed, and then the building quality of the whole prefabricated box girder is guaranteed.

This invention proposes a method for calculating the dynamic stability limit of articulated tractors under cross slope conditions, aiming to accurately assess the lateral stability of articulated tractors under complex terrain and dynamic operating conditions. This method first obtains parameters such as the tractor's geometry, mass, and dynamic acceleration; then, a spatial attitude model is established based on the rear body, transforming the articulation and torsional axes in the local coordinate system of the rear body to the global space, and causing the front body to move relative to the spatial articulation and torsional axes; the spatial coordinates of the four wheel points, articulation points, and centers of mass are calculated, constructing a four-wheel horizontal projection support quadrilateral, and obtaining the dynamic equivalent projection points based on longitudinal and lateral accelerations; by determining the positional relationship of the projection points relative to the left and right rollover boundaries, the critical stability angle of the cross slope is determined. This invention can be used to assess the lateral rollover risk of articulated tractors under different articulation, torsional, terrain undulation, and acceleration / deceleration conditions.

This application provides a method, apparatus, electronic device, and storage medium for slope offset suppression, relating to the field of automotive technology. The method includes: calculating and acquiring multiple judgment parameters of a target vehicle, determining the real-time integral switch state according to a preset integral switch rule, and updating the compensation integral in real-time based on the target vehicle's real-time operating conditions, lateral deviation, and integral gain coefficient to determine the lane-keeping control command and thus control the target vehicle's steering mechanism for lane keeping. This method determines the real-time integral switch state of the target vehicle through judgment parameters corresponding to the target vehicle's lane-keeping control parameters, and dynamically updates the compensation integral based on the vehicle's real-time operating conditions. It then determines the lane-keeping control command based on the dynamically updated compensation integral, achieving implicit compensation for the impact of slope without relying on slope sensors or explicit estimation of the slope angle. This improves the compatibility and accuracy of slope offset suppression, better ensuring driving safety.

This invention relates to the field of urban rail transit track construction technology, and provides a method for positioning and laying precast floating slabs in curved sections. The method includes: establishing the line benchmark and slab joint projection edge based on CPⅢ control points to determine the fan-shaped slab joint difference; determining the theoretical offset using the mid-vector method, superimposing the additional offset caused by superelevation, and incorporating the internal sliding compensation amount during slab lifting to obtain the comprehensive offset for theoretical positioning; after the slab is suspended and placed, fine-tuning it to within a threshold matching the specifications of the leveling shims in a non-lifting state; and installing lateral supports after fine-tuning to resist inward sliding during slab lifting. This invention upgrades traditional trial-and-error based experience to an active positioning control system with multi-factor coupled calculation, solving the millimeter-level positioning problem of rigid slabs under the coupled effects of curve constraints, cross slope projection, and slab lifting disturbances. It eliminates the inefficient cycle of fine-tuning, lifting, sliding, and readjustment, significantly improving construction efficiency and quality consistency.

The application discloses a kind of different types tunnel construction clearance automatic generation method, step (1), establish standard database, tunnel road grade, design speed, lane number and left side maintenance road width, right side maintenance road width, left side lateral width, right side lateral width, driving lane width, residual value one-to-one corresponding storage;Step (2), obtain the tunnel road grade, design speed, lane number input by user, and generate standard construction clearance basic parameters by matching with standard database;Step (3), receive the individualized parameter input by user, including left side widening value, right side widening value, emergency parking width, emergency parking lane cross slope value, maintenance road height;Step (4), set reference point three-dimensional coordinates, based on basic parameters and individualized parameters, the three-dimensional coordinates of each feature point of construction clearance are calculated by trigonometric function;Step (5), according to the feature point coordinates, tunnel construction clearance graphics are automatically drawn and layer, line type and color identification are completed, and the automation and intelligent level of tunnel engineering design is significantly improved.

The application provides a lane keeping control method and system based on road surface transverse slope estimation and feedforward compensation, and relates to the technical field of automobile auxiliary driving, and the method comprises the following steps: acquiring vehicle state information; adopting a method of low-pass filtering and state observer fusion to estimate a road surface transverse slope angle in real time; calculating a feedforward compensation steering angle based on the estimated transverse slope angle, wherein a feedforward gain is adjusted online and adaptively according to a vehicle speed and a load; calculating a feedback control steering angle by adopting an LQR algorithm based on a transverse deviation and a yaw angle deviation; dynamically weighting and fusing the two by a feedforward-feedback coupling coordinator to generate a target front wheel steering angle and control vehicle steering. The application can effectively eliminate the steady-state transverse deviation caused by the road surface transverse slope, and significantly improve the lane keeping precision, system robustness and driving comfort.

The application belongs to the technical field of municipal road design, and provides a municipal road cross section intelligent optimization design method based on BIM, which comprises the following steps: performing sub-expansion section division, obtaining cross slope default interpolation generated by a BIM default interpolation algorithm in the sub-expansion section, judging whether the cross slope default interpolation is valid, and identifying a to-be-optimized sub-expansion section; determining a cross slope interpolation reconstruction mode of the to-be-optimized sub-expansion section according to the proportion and distribution of invalid cross slope default interpolations in the to-be-optimized sub-expansion section; performing change trend analysis on the existing cross slope data in the to-be-optimized sub-expansion section, determining the type of the to-be-optimized sub-expansion section, selecting an adaptive model, and reconstructing the cross slope interpolation in combination with the cross slope interpolation reconstruction mode of the to-be-optimized sub-expansion section to obtain a stake number-cross slope data table; and replacing the cross slope default interpolation of the to-be-optimized sub-expansion section by BIM reverse assignment according to the stake number-cross slope data table, thereby improving the one-time compliance rate and overall design efficiency of the cross slope design of a complex expansion section.

The present application relates to the technical field of steel arch bridge hoisting construction, and particularly relates to a steel arch bridge arch rib hoisting posture multidirectional adjusting device and adjusting method. The present application changes the arch rib hoisting posture from air adjustment to land adjustment, and realizes the automatic adjustment of the arch rib hoisting posture and the hanger lug position through an automatic adjusting system, which can greatly improve the construction efficiency and hoisting precision. The device has a simple structure, is convenient to transport and manufacture, and is convenient to use. The device does not need a large-tonnage crane, has no aerial operation, has high construction efficiency, greatly improved safety factor, and greatly reduced construction cost. The automatic electric control oil pressure machine hoisting posture device and adjusting method can adjust the hoisting posture of different spatial posture components, need not replace the equipment, only need to replace the relative position of the front and rear adjusting bases and the base cross slope value, and can be repeatedly used. The construction device composed of higher generality materials such as steel pipes and I-beams has safety and reliability, simple structure, low cost, and is convenient to install, can be disassembled, and can be repeatedly used.

The present application belongs to the field of vehicle sanding control technology, and relates to a rail vehicle sanding control system and a control method thereof. The present application dynamically determines whether to output a sanding signal and an ice surface distribution characteristic label based on clustering analysis of the front track section ice surface image and the track cross slope angle; dynamically sets the sanding spray angle by fusing the vehicle speed, the track cross slope angle and the ice surface characteristics, sets the target sanding flow according to the air source pressure and determines the sanding duration; monitors the actual sanding flow and the target flow deviation in real time, and triggers the compensation action when the deviation exceeds the limit; monitors the nozzle pressure difference change rate during and after the sanding execution, and performs the sanding operation when the change rate deviates from the normal trend. The present application effectively solves the problems of inaccurate control, low sanding efficiency and nozzle blockage of the existing sanding system on the icy track, and achieves the effects of improving the sanding accuracy and automation level, enhancing the friction between the wheels and the track, ensuring the driving safety and reducing the maintenance cost.

A system and method for predictive vehicle road bank control on an unmapped road. A sensor within a vehicle, based on received sensor data, determines upcoming cross-slope roadway characteristics of an unmapped road, where the unmapped road comprises an absence of known cross-slope roadway characteristics. The vehicle creates a road model map based on the upcoming cross slope roadway characteristics of the unmapped road and predicts, based on the road model map, one or more bank angles at multiple look-ahead points of the upcoming roadway. The vehicle, based on the predicting of one or more bank angles, generates one or more steering control signals to compensate for the one or more bank angles at the multiple look-ahead points.

The present invention relates to a mobile grading machine having an improved grade control system. In particular, a mobile work machine is provided that includes a first grade control system that receives external reference position signals from a geopositioning system and generates blade control signals to control the orientation of a blade when grading a work site. The mobile work machine also includes a second grade control system that uses blade primary pitch and cross slope and chassis (or main frame) primary pitch and cross slope to control the orientation of the blade relative to the frame of the work machine to form a flat grade having a desired primary pitch and cross slope. When the functionality of the first grade control system is interrupted, the mobile work machine automatically switches to using the second grade control system to perform the grading operation until the interruption to the functionality of the first grade control system is restored.

The invention discloses a design method of a hexapod robot, and belongs to the field of robot design. The problems that an existing robot is unstable, slips or fails in obstacle crossing under complex terrains such as slopes, cross slopes and gullies are solved. Systematic size-terrain constraint analysis is lacked, and the trafficability of the robot under the limit working condition cannot be guaranteed. According to the method, based on the spatial layout of a robot body and supporting legs of the to-be-designed hexapod robot, the geometric dimension parameters of the hexapod robot and the working space of the supporting legs, the analytic constraint relation between the geometric dimension parameters and terrain parameters of the hexapod robot is established according to the walking working conditions of the hexapod robot; and designing geometric dimension parameters of the hexapod robot based on the analysis constraint relation. And it is ensured that the hexapod robot has stable movement trafficability in the complex terrain. According to the hexapod robot designed based on the method, the terrain adaptability to the complex field environment can be remarkably enhanced while the structural strength and the overall stability are maintained.

The application discloses a bridge superstructure and substructure double-driving adaptive modeling method and system, wherein the modeling method comprises the following steps: a dynamic local coordinate system is established based on a bridge span line and a route normal line, a space included angle theta is obtained, and a virtual cutting plane is constructed; a three-dimensional boolean difference set operation is performed on a standard beam segment and the virtual cutting plane, and a skew beam segment geometric model is generated; a planar projection contour polygon of each pier is extracted, the contour polygon is discretized into a sample point set, ray collision detection is performed, terrain elevation is obtained, and the elevation range and local terrain cross slope in the contour range are calculated; when the local terrain cross slope exceeds a preset threshold, adaptive calculation of a stepped foundation or a non-equal-height pier is triggered, and top and bottom surface elevations are output; a parameter topology dependency graph is established; when local changes occur in the bridge span line or the digital terrain model data, the parameter topology dependency graph is traversed, affected nodes are marked as dirty nodes, and only the incremental recalculation of branch links where the dirty nodes are located is performed.

The invention provides a lane keeping control method and system based on road surface cross slope estimation and feed-forward compensation, and relates to the technical field of automobile auxiliary driving. Estimating the transverse slope angle of the road surface in real time by adopting a low-pass filtering and state observer fusion method; calculating a feed-forward compensation steering angle based on the estimated cross slope angle, wherein a feed-forward gain is adaptively adjusted on line according to the vehicle speed and the load; based on the transverse deviation and the yaw angle deviation, an LQR algorithm is adopted to calculate a feedback control steering angle; and carrying out dynamic weighted fusion on the two through a feedforward-feedback coupling coordinator to generate a target front wheel steering angle and control the steering of the vehicle. According to the method, the steady-state lateral deviation caused by the road surface cross slope can be effectively eliminated, and the lane keeping precision, the system robustness and the driving comfort are remarkably improved.

The invention relates to a multi-level water-blocking sealing pavement structure and a construction method aiming at the whitening disease of a bridge deck, the multi-level water-blocking sealing pavement structure comprises a waterproof layer, an asphalt lower sealing layer, a homogeneous water-tight asphalt mixture layer and an SMA-13 surface layer which are sequentially arranged on a bridge deck from bottom to top, and a sealing material is arranged at the joint of a bridge deck guardrail and the SMA-13 surface layer. A side drainage structure is arranged on the side, away from the bridge deck guardrail, of the homogeneous water-tight asphalt mixture layer, and the side drainage structure approaches the interior of the homogeneous water-tight asphalt mixture layer and is located below the SMA-13 surface layer. Through the synergistic effect of blocking of the water blocking layer and dredging of the drainage channel, rainwater is blocked from permeating into the bridge deck, meanwhile, a small amount of interlayer seepage water is rapidly drained through the bridge deck cross slope, compared with a traditional single water blocking structure, the interlayer accumulated water removing efficiency is improved, the hydrodynamic pressure effect is mechanically eradicated, the occurrence rate of whitening of the bridge deck is reduced, and long-acting prevention and treatment of diseases are achieved.

The application discloses a kind of adjustable track box girder crash barrier elevation measurement methods, box girder is placed in the elevation measurement device of a kind of adjustable track box girder crash barrier designed to assist, the device includes rail, wedge steel plate, connecting steel bar, steel plate, reinforcing rib plate, anti-rollover support frame, the rail is directly anchored on measuring platform, the wedge steel plate is welded into a whole and placed on rail, the connecting steel bar is used to connect two sides wedge steel plate, the steel plate, reinforcing rib plate is directly welded to wedge steel plate bottom end, the anti-rollover support frame is welded to one side of wedge steel plate, the device can be adjusted support mechanism according to actual beam length and beam cross slope size, it is convenient to install, strong flexibility, easy to operate, high practicality, the elevation measurement method of a kind of adjustable track box girder crash barrier in the application is with the aid of rail platform, simplifies measurement procedure, saves the measurement time of box girder crash barrier elevation, improves work efficiency.

This invention provides a drainage structure for bridge expansion joints, relating to the field of bridge engineering technology. The drainage structure for bridge expansion joints includes a base and a shoulder. The upper part of the base is divided into two parts: a cross slope area and a longitudinal slope area. The cross slope area includes a water-stabilized layer on top of the base, a waterproof layer laid on the surface of the water-stabilized layer, and an asphalt layer laid on the surface of the waterproof layer. In this invention, by setting up a template with pre-reserved drainage channels and installing rainwater collection boxes before pouring the expansion joint concrete, and by adding permeable fillers such as crushed stone after construction, a continuous water-conducting channel is formed, consisting of drainage channels, permeable fillers, rainwater collection boxes, and drainage pipes. This effectively solves the problem of drainage obstruction caused by the subsequent concrete interrupting the original drainage channel, achieving effective collection and orderly discharge of water accumulated in the interrupted area, avoiding water accumulation at the expansion joint, and improving the drainage efficiency and structural durability of the bridge expansion joint.

The utility model relates to the technical field of bridge construction, in particular to a bearing beam cross slope construction platform which comprises a bearing assembly and a slope adjusting device arranged at the upper end of the bearing assembly, the bearing assembly is connected between adjacent pier columns, and the slope adjusting device comprises a base plate, a plurality of driving pieces and a plurality of stabilizing pieces. The base plate is detachably connected with the bearing assembly, the bearing beam is connected to the upper ends of the driving pieces, and the stabilizing pieces are evenly distributed on the periphery of the base plate. The clamping groove is formed in the middle of the base plate, the driving piece is arranged in the clamping groove, the clamping groove can prevent the driving piece from sliding on the base plate, the driving piece is kept stable during working, meanwhile, the positioning function can be achieved, one end of the stabilizing piece is connected with the driving piece, and the other end of the stabilizing piece is connected with the base plate. The connecting strength of the driving piece and the base plate can be enhanced, the driving piece can be prevented from inclining in the working process, the whole structure is simple, the construction progress can be accelerated, and high connecting precision can be guaranteed.

This utility model discloses a flip-up structure for a cap beam operating platform, including a clamp assembly, a beam frame, a protective fence, and step plate modules. The beam frame is installed on the pier via the clamp assembly, the step plate modules are laid on the beam frame, and the protective fence is installed around the perimeter of the beam frame. The advantages of this utility model are: the step plate unfolds horizontally, providing an expanded working surface; it is locked by quick-release buckles; the step plate closes at an angle, relying on gravity and elastic sealing strips to press the cap beam side mold, forming a self-locking protective surface; the hinge mechanism limits the flipping angle to 60°-75°, ensuring center of gravity stability; the step plate and fence use standardized interfaces, connected by buckles or pins, requiring no welding or special tools; the load-bearing main beam is equipped with an adaptive leveling device that automatically adapts to the cap beam's cross slope; and high-compression rubber strips are installed at the bottom of the step plate to compensate for template installation errors, ensuring complete sealing of gaps.

The invention relates to an intelligent monitoring system for airport pavement paving, which belongs to the technical field of airport pavement paving, and comprises a GNSS positioning and orientation module used for measuring the current orientation of a paver during construction; the laser leveling module is used for measuring the height difference between the reference laser surface and the leveling surface; the infrared temperature monitoring module is used for measuring the temperature of the airfield pavement; and the main control module is in communication connection with the GNSS positioning and orientation module, the laser leveling module and the paver and is used for controlling the paver to complete operation according to the current orientation of the paver during construction, the height difference between the reference laser surface and the leveling surface and the temperature of the airfield pavement. Millimeter-level or submillimeter-level vertical and horizontal elevation control can be achieved through closed-loop control between the laser leveling model and the main control module, waves, steps and unevenness are remarkably reduced, and the road surface flatness index is improved; the scraping plate can be correctly aligned with the design axis and the cross slope in a directional mode through GNSS positioning, and the phenomena of transverse errors and edge non-uniformity are reduced.

The invention discloses a road section terrain and traffic flow-based road cross slope design method. The method comprises the steps of S1, acquiring geometric and terrain data and traffic operation data along a road to be designed; s2, dividing the road to be designed into a plurality of cross slope decision road sections; s3, for each cross slope decision road section, calculating a terrain comprehensive index and a traffic comprehensive index; s4, determining a cross slope candidate interval of the road section according to the terrain comprehensive index and the traffic comprehensive index, and establishing a constraint set; s5, under the condition that the constraint set is met, solving a target cross slope by taking the safety risk, the drainage risk, the construction cost or the landscape continuity as an optimization target to obtain a cross slope design value of each road section; s6, outputting a cross slope design result, wherein the cross slope design result at least comprises the cross slope design value of each road section and the corresponding stake number range; according to the scheme, calculability, traceability and whole-line consistent optimization of cross slope design can be achieved, and drainage safety, anti-skid safety and landscape channel landscape continuity are improved.

The utility model belongs to the field of highway engineering, particularly relates to an automatic continuous detection device for a cross slope of a road surface, and aims to solve the problems that an existing device is relatively large in size, needs to be moved through a platform at the bottom and wheels at the bottom and is relatively inconvenient to move, carry and store although being convenient to detect. Comprising a first supporting leg and a second supporting leg, a connecting plate is fixedly arranged on one side of the second supporting leg, a connecting groove is formed in one side of the first supporting leg, and one end of the connecting plate is slidably arranged in the connecting groove; the detection assembly is used for detecting the cross slope, the detection assembly is arranged on one side of the second supporting leg, the device can be unfolded and folded at any time, the size is relatively small, and therefore the effects of being convenient to carry and store are achieved, the practicability and portability of the device are ensured, and detection can be achieved only by placing the device at a designated position after the device is unfolded.

The invention relates to the technical field of municipal road construction, and discloses a portable self-locking device for installing kerbstones and a construction method.The portable self-locking device comprises a portable base and a self-adaptive clamping arm, the portable base is fixedly connected with a horizontal sensor used for accurately measuring and controlling the levelness of the kerbstones and a cross slope, and the self-adaptive clamping arm is fixedly connected with a vertical sensor used for accurately measuring and controlling the horizontal degree of the kerbstones; the portable base is fixedly connected with a laser positioner used for ensuring the laying levelness, perpendicularity and linear precision of curbs. S1, the device is carried to a designated installation point location; s2, calibrating the reference line by using laser emitted by the laser positioner; s3, the kerb is clamped and placed at a designated position; s4, the self-locking system triggers and fixes the curb; s5, after mortar is poured, a lever is treaded for unlocking so as to release the curbs; and S6, the device is moved to the next station. The problems that when the curb is installed, the position needs to be manually finely adjusted, the rapid self-locking function is lacked, and temporary fixing after installation is difficult to achieve are effectively solved.

The invention relates to the technical field of bridge engineering, in particular to a cross slope change section steel structure bridge steel box girder main body structure model building method, which comprises the following steps: acquiring the cross slope ratio of a mileage point at a preset position in a cross slope change section and the section size of a steel box girder at the mileage point, segmenting the cross slope change section along the length direction, determining a cross slope line at each segmentation point, and constructing a steel box girder main body structure model; and determining the section size of the steel box girder at each segment point, establishing a space reference plane, and sequentially generating solid models of a bottom plate, a web plate and a flange plate of the steel box girder through three-dimensional lofting to complete the overall three-dimensional model building of the cross slope change section box girder. According to the method, accurate lofting and size control of the steel box girder at the cross slope change section are achieved, errors caused by manual calculation and approximate processing in a traditional method are avoided, the modeling precision and effect are improved, through refined modeling of the cross slope change section, it is ensured that the line shape of a bridge structure meets the design requirement, the structure safety is improved, and the construction cost is reduced. And standardization and normalization of a steel structure bridge modeling technology are promoted.

The application provides a drainage anchor rod, a slope drainage system and a slope drainage treatment method for a tunnel passing through a slope, and belongs to the technical field of tunnel slope treatment, and comprises an anchor rod body and a drainage inner pipe; the anchor rod body is provided with a central hole arranged in the axial direction, and a plurality of water permeable holes in communication with the central hole are further arranged on the anchor rod body; the drainage inner pipe is supported in the anchor rod body through an inner pipe framework, and a plurality of drainage holes in communication with the central hole are arranged on the drainage inner pipe; a plurality of drainage anchor rods, drainage branch pipes corresponding to each row of drainage anchor rods, and drainage main pipes corresponding to both sides of the tunnel bottom; during construction, the lengthened drainage anchor rod is driven into the surrounding rock near the sliding surface at the selected position; and the ordinary drainage anchor rod and the ordinary anchor rod are alternately arranged. The slope treatment method provided by the application integrates anchoring and drainage, ensures the stability of the slope, and ensures the safety of the tunnel; the effective combination of slope drainage and anchoring can reduce the construction process, reduce the construction cost and shorten the construction period.