1556 results about "Culvert" patented technology

The invention discloses a health assessment method for a long-distance underground culvert structure, and the method comprises the steps: carrying out the fusion processing based on acoustic and optical detection data, so as to recognize a structure defect; based on underwater rebound and coring test data, carrying out underwater-dry conversion and correction on a strength value, and determining corrected structural strength and material degradation parameters; in combination with defect, degradation and historical monitoring data, carrying out structure evolution modeling and mutation risk identification to obtain evolution characteristics and mutation risks of the structure; and integrating the corrected structural strength, evolution characteristics and abrupt change risks, performing full-field state assessment, and generating a structural health assessment and risk early warning result. According to the method, accurate, dynamic and full-field evaluation of the health state of the culvert can be realized, and the reliability and early warning capability of an evaluation result are improved.

The invention provides a box culvert jacking attitude intelligent control method and system based on digital twinning, and relates to the technical field of attitude control. Structural parameters of a box culvert entity, parameters of a construction environment, and elevation change data and axis offset data in a jacking process are obtained, and the two kinds of data are integrated to obtain a box culvert jacking attitude intelligent control system; generating a box culvert jacking attitude data frame sequence; according to box culvert entity reference information in the model and the updated box culvert real-time state information, combining the box culvert jacking attitude data frame sequence to determine box culvert actual attitude parameters, comparing the box culvert actual attitude parameters with box culvert design attitude parameters, determining attitude deviation types and attitude deviation values corresponding to the box culvert axis direction and the box culvert height direction respectively, and calculating the box culvert jacking attitude data frame sequence according to the attitude deviation types and the attitude deviation values. According to the method, the attitude adjustment control instruction is generated according to the attitude of the box culvert, so that the equipment drives the jack to adjust the jacking attitude of the box culvert according to the instruction, dynamic synchronization and accurate mapping of the structural state in the jacking process of the box culvert are realized, and the real-time performance, the accuracy and the control robustness of attitude adjustment are improved.

The invention relates to the field of concrete forming, in particular to concrete prefabricated part pouring and vibrating equipment for assembled small and medium-sized culvert gates, which comprises a vibrating table, the vibrating table is composed of a base frame at the lower part and a table plate at the upper part, and the table plate is provided with a limiting mechanism for clamping the bending angle position of a mold. According to the directional pushing type vibrating device, the L-shaped clamping plate is matched with the adjusting assembly, the bent corner of the mold is clamped and fixed, relative sliding of the mold and the table plate in the vibrating process is effectively avoided, it is ensured that vibration energy is efficiently transmitted into concrete, and the vibration efficiency is improved. The adjusting assembly can adjust the position of the L-shaped clamping plate in a rough adjustment and fine adjustment combined mode so as to accurately adapt to molds of different sizes, energy generated by the vibration motor is directly transmitted to the L-shaped clamping plate through the linkage piece, the energy is further transmitted to the bent corner of the mold, and targeted vibration on the area is achieved.

The invention belongs to the technical field of infrastructure structures and materials, and discloses an intrinsic self-prestress ECC material, a surface layer structure prepared from the intrinsic self-prestress ECC material and application of the intrinsic self-prestress ECC material. A low-dosage volume expansion component and a building and curing combined strategy are utilized, the bottleneck that self-stress and a construction window period are not coordinated is broken through, the highest free expansion deformation of the intrinsic self-prestress ECC material in the temperature and humidity curing process is controlled to range from 1500 mu epsilon to 10000 mu epsilon, the later-period service free volume deformation is kept to be 55% higher than the early-period highest free expansion deformation, and the service life of the intrinsic self-prestress ECC material is prolonged. And the dual requirements of intrinsic self-prestress and construction windows are innovatively met. The maintenance-free seamless ultrathin target of the ECC surface layer structure is achieved through high-performance intrinsic self-prestress and self-healing. The method is widely applied to the fields of ocean ultra-thin large-buoyancy floating bodies, road surfaces, bridge floors, airport runways, ultra-thin box culverts, concrete panels, pumped storage power station panels, anti-seepage panels, floor panels, canal linings, tunnel linings, old structure updating and repairing and the like.

The invention provides an assembly type bridge and culvert node mechanical property analysis method and system based on a neural network, and relates to the technical field of data processing, and the method comprises the steps: obtaining real-time monitoring data of an assembly type bridge and culvert node, the real-time monitoring data comprising strain data, vibration data and load data; performing feature extraction and optimization on the real-time monitoring data of the fabricated bridge and culvert nodes to obtain a nonlinear feature set; performing mechanical property evaluation on the nonlinear feature set to obtain a real-time mechanical property evaluation result; performing model construction and optimization based on the real-time mechanical property evaluation result and preset historical monitoring data to obtain an optimized mechanical property change trend prediction model; and sending the real-time monitoring data to the optimized mechanical property change trend prediction model for prediction to obtain the mechanical property of the fabricated bridge and culvert node in a preset time period. The precision, timeliness and reliability of mechanical property monitoring of the fabricated bridge and culvert joint are improved.

The invention discloses a lightweight aggregate-based steam-curing-free high-performance pipe culvert and a preparation method thereof, and belongs to the technical field of concrete pipe culverts. The lightweight aggregate-based steam-curing-free high-performance pipe culvert provided by the invention is prepared from the following raw materials by unit volume mass: 300-450 kg / m < 3 > of a sulfur-aluminum-iron series low-carbon cementing material; 800-920 kg / m < 3 > of solid waste-based lightweight aggregate; 300-550 kg / m < 3 > of solid waste-based artificial sand; 0-100 kg / m < 3 > of a mineral admixture; 0-50 kg / m < 3 > of an auxiliary material; 110-160 kg / m < 3 > of water; the concrete further comprises a water reducing agent and a retarder. The lightweight aggregate-based steam-curing-free high-performance pipe culvert can be demolded within 4 hours during molding, the demolding time is short, steam curing is not needed, the production cost is low, and the production efficiency is high; the obtained product is high in strength and good in impermeability and durability, and solid waste can be utilized in a high proportion.

The invention relates to the technical field of box culvert prefabricated part production, in particular to an integral box culvert assembly line construction technology which comprises the steps that preparation before construction is conducted, specifically, technical preparation, personnel preparation, material preparation and mechanical equipment preparation are conducted, and condition guarantee is provided for formal box culvert production; processing the steel bars into a steel bar cage, storing the steel bar cage and waiting for entering a mold; after the mold is installed in place, the mold is cleaned, debugged, maintained and regularly inspected; preparation work before concrete pouring, mold cleaning, oil coating, steel bar mold entering and embedded part mounting are conducted; pouring concrete; performing natural or steam curing; the box culvert is demoulded, and components are marked; the box culvert is stored and watered for maintenance; a single-circulation assembly line is adopted, box culvert production stations are arranged, all procedures of box culvert production are dynamically completed clockwise, the occupied area is reduced, meanwhile, production management and material transportation are facilitated, the production efficiency is improved, and the space utilization rate is increased.

The invention provides a drainage arch culvert structure, and belongs to the technical field of building construction. The arch ring is located above the foundation and serves as a drainage channel of the arch culvert body; the platform body is arranged on the foundation, clings to the side walls on the two sides of the arch ring and serves as a lateral protection structure; and the protection arch is arranged at the top of the platform body, covers the arch ring side arch and serves as a side arch protection structure. The drainage arch culvert structure composed of the foundation, the arch ring, the platform body and the protective arch is arranged at the bottom of the slag yard, a traditional scheme that a drainage blind ditch is arranged at the bottom of the slag yard can be replaced, the overflow area is larger than that of the drainage blind ditch, the drainage capacity is higher than that of the drainage blind ditch, slag materials can be prevented from invading the structural limit of the drainage blind ditch in the filling process, and a drainage channel cannot be blocked; the drainage effect cannot be influenced.

The invention discloses a box culvert jacking attitude monitoring method, system and device and a medium, and the method comprises the steps: measuring a first distance between a distance measurement master station and a distance measurement slave station at equal period intervals by using the distance measurement master station; the change condition of the first distance is monitored, and the jacking position of the ranging slave station after single jacking is finished is obtained; when it is monitored that the change of the first distance exceeds a first distance threshold value, it is determined that the box culvert is in a jacking state; when it is monitored that the time when the first distance does not change exceeds a time threshold value or the change of the first distance does not exceed a second distance threshold value, it is affirmed that single jacking of the box culvert is finished, the first distance at the moment is recorded, and the jacking position of the distance measuring slave station is calculated; the jacking posture of the box culvert is monitored through the jacking position of the ranging slave station; and the steps are repeated until the box culvert reaches the maximum jacking stroke. In each jacking process, the jacking posture of the box culvert is monitored, the moving direction of the box culvert can be accurately estimated, and deviation in the jacking process can be found in time.

The utility model relates to a full water tank culvert relocation and relocation butt joint box culvert and a construction method thereof. The full water tank culvert relocation and relocation butt joint box culvert comprises a U-shaped steel sleeve box, a row hole, a ring beam, a new box culvert, an old box culvert and an inspection shaft. The construction method for changing the full water tank culvert into the butt joint box culvert comprises the steps that firstly, the height of a ring beam on a top plate of an old box culvert is increased synchronously, and the ring beam is connected with old box culvert embedded steel bars; 2, a new box culvert is constructed according to design requirements. The butt-joint box culvert has the advantages that the butt-joint box culvert adopts the U-shaped steel sleeve box to block water flow of the box culvert, the cyclic repeated utilization rate is high, the steel plate rigidity is large, the stability of a weir body is guaranteed, the construction period is shortened, and the cost is saved; the U-shaped steel sleeve box is used as a temporary cofferdam in the box culvert and can be quickly mounted and dismounted, and the safety risks of box culvert silt accumulation caused by manual stacking of sandbag cofferdams and underwater manual dismounting are avoided.

The invention discloses a road culvert inner wall damage image detection and traffic capacity evaluation method and system, and relates to the technical field of road engineering detection and computer vision, and the method comprises the steps: collecting multi-source data through an annular camera, a laser section scanner and a mileage encoder carried by a detection robot, and carrying out the panoramic expansion and time-space registration; using a multi-scale attention panoramic segmentation network to identify damages such as lining cracks, joint slab staggering, damage and chipping, steel bar exposure and water leakage; calculating the clearance size and the deposition thickness of the culvert by adopting an ellipse fitting method; according to the method, the culvert detection speed reaches 50 m / h, and the damage detection accuracy reaches 89% or above.

The invention relates to the technical field of building construction, in particular to an arc section narrow space concrete segmented filling construction method which specifically comprises the following steps: S1, preparing concrete for pouring, and preparing a template for sealing an arc-shaped guide groove, side supporting plates used for being erected on the arc-shaped guide grooves are arranged at the two ends of the formwork. S2, the base face of the arc-shaped guide groove is cleaned, the formwork is plugged on the top face of the arc-shaped guide groove after cleaning, and a support which abuts against the interior of the box culvert is erected on the top face of the formwork; s3, concrete is poured from the two ends of the top of the box culvert, and the concrete enters from the narrow space of the arc section and fills the blocked arc-shaped guide groove till the concrete is flush with the top of the box culvert; and S4, after the concrete is solidified, the support and the formwork are sequentially dismantled. According to the method, the integrity and the connection rigidity of the integrally prefabricated box culvert in the duct piece are guaranteed, the construction quality of the under-rail structure is improved, and the pouring mode is convenient.

The utility model discloses an underwater steel pipe installation auxiliary device, which relates to the technical field of pipe jacking machines, including a main jacking mechanism and a pipe jacking machine head. The main jacking mechanism also includes a rear backrest and a side frame, a machine head guide rail, and an oil cylinder. The rear backrest and the side frame, the machine head guide rail, and the oil cylinder are respectively fixedly installed on the inner side and the bottom of the starting well. A plurality of oil cylinders are fixedly installed on one side of the rear backrest, and the output ends of the plurality of oil cylinders are fixedly connected with a uniform pressure ring. A rear shell is fixedly installed on one side of the pipe jacking machine head, and a plurality of culverts are movably connected between the rear shell and the uniform pressure ring. Two displacement plates are arranged on the inner side of the pipe jacking machine head, and a plurality of limit wing plates are arranged on one side of the displacement plate and inserted in the through grooves in the installation shell and the pipe jacking machine head. The guide groove arranged on the other side of the displacement plate cooperates with a fixed limit seat to push out and insert the plurality of limit wing plates into the inner side of the hole when the pipe jacking machine head is deflected by force, so as to limit the deflection of the pipe jacking machine head, and reset it in time through the deviation correction system of the pipe jacking machine head itself.

The invention discloses an airport area underground water and surface water system coupling seepage regulation and control method and system, and the method comprises the steps: employing a multi-source data fusion investigation mode to find out regional stratum and structure characteristics, and determining an underground water occurrence migration rule and a surface water and underground water supplement and drainage relation; constructing a coupling seepage model of the underground water and the surface water system under the current condition by applying a numerical simulation method, and defining a dynamic association mechanism of the underground water and the surface water system in time and space; based on a simulation result, determining a transformation scheme that a main stream adopts a double-hole box culvert and a branch stream adopts a single-hole box culvert, and arranging an electric gate at the box culvert; arranging monitoring points of groundwater level, pore water pressure and surface water system flow in combination with field spring water and well distribution, and constructing a cooperative monitoring network; the coupling seepage law of underground water and surface water systems is analyzed based on monitoring data, and the opening degree of a box culvert electric gate is dynamically adjusted to control rising of the underground water level in the flood period. The stability of a water system in an airport area is ensured.

The utility model relates to the technical field of culvert construction, and discloses a culvert overall efficient pouring trolley which comprises a rail, the top of the rail is connected with a trolley hydraulic walking mechanism in a sliding mode, a bottom beam is arranged at the top of the trolley hydraulic walking mechanism, a first portal is arranged at the top of the bottom beam, and a second portal is arranged on the right side of the first portal. The first door frame and the second door frame are connected through a connecting beam. By means of the arrangement of the whole plastic steel formwork, gaps in the surface of the culvert are reduced, the gap processing time is greatly saved, the construction period is greatly shortened, due to the fact that the plastic steel formwork is light in weight, equipment is easier to move, and the problem that an existing formwork is made of a single formwork and made of steel, and the construction cost is low is solved. The existing culvert wall is small in area and heavy in weight, and needs to be combined with a plurality of templates, but gaps can be formed between the templates, so that the appearance quality problems of low surface smoothness, surface drawing marks and the like of the demoulded culvert wall are solved.

The invention discloses a construction technology for a prefabricated drainage box culvert steel formwork, and is suitable for the technical field of box culvert formwork construction. The drainage box culvert steel formwork system comprises the construction steps of construction preparation, installation of a pedestal and an inner formwork support, installation of a box culvert foundation, installation of an inner formwork assembly, installation of a formwork assembly, one-time pouring forming, formwork removal after pouring and transferring. The construction site regionalization layout is adopted, a box culvert steel bar binding area and a formwork installation transverse moving area with an adjustable inner formwork support are arranged, the circulating operation of formwork erecting, pouring, demolding and transferring is achieved through a main beam suspension type inner formwork assembly, and a hydraulic formwork collecting device is innovatively adopted for driving a symmetrical hinged type inner formwork system; and in combination with the symmetry and multi-point uniform stress characteristics of a plurality of auxiliary supporting devices, the bending deformation of the inner template is effectively controlled through sequential control of a layered equal-height high-speed pouring process with preferential base angles.

The utility model discloses a culvert silt cleaning device which comprises a silt removing barrel, one end of the silt removing barrel is closed, the other end of the silt removing barrel is open, the end face of the closed end of the silt removing barrel is rotationally connected with a tilting head assembly for adjusting the height of one end of the silt removing barrel, the silt removing barrel is of a semi-cylindrical structure, and the top face of the silt removing barrel is detachably connected with a cover plate. A mounting hole is formed in the top surface of the cover plate, and a one-way circulation assembly is arranged in the mounting hole; the two sides of the top face of the silt removal barrel are detachably connected with traction assemblies used for pulling the silt removal barrel to move front and back correspondingly. The traction assembly is fixedly connected with the ground or anchor ships on the two sides of the river channel. According to the culvert silt removing device, a large amount of silt deposited in a culvert can be continuously emptied in a layered mode by continuously pulling the silt removing barrel back and forth, the silt rushes to the downstream along with water flow, and the content of the silt in the culvert and the cleaning difficulty are reduced.

The invention discloses a tunnel, bridge and culvert water level detection and alarm system and method based on deep learning, and the method comprises the following steps: S1, collecting an image and a capacitance water level signal at the lowest point of a tunnel or an easy water accumulation region, and generating standardized multi-source data; s2, inputting the image into a SegmentAnything model, extracting a water body mask, and calculating an image water level value in combination with scale mapping; s3, carrying out confidence weighted fusion on the image water level and the capacitance signal to obtain a fused water level value; s4, constructing a fused water level time sequence, constructing an SCI Net model, and outputting a predicted water level sequence; s5, generating an alarm label according to the fused water level and the prediction result; s6, LED display and acousto-optic response are controlled according to the alarm label, and an early warning prompt is started when a serious alarm is given; s7, capturing an image in an early warning or serious alarm state, and generating an alarm data packet; and S8, uploading to an urban water level monitoring platform through the Internet of Things module. According to the invention, intelligent identification and remote early warning of the ponding state of the tunnel bridge and culvert are realized.

The invention relates to the technical field of tunnel engineering disease treatment, in particular to a construction method of a drainage system for karst tunnel inverted arch upheaval disease treatment, which comprises the following construction steps: S1, arranging settlement monitoring points in a disease section tunnel, and arranging a reinforcing structure in a lining arch foot area; and S2, the existing disease inverted arch is broken and removed section by section according to the preset length, and temporary supporting is carried out in time. And S3, an overhaul window is dug in the lining through a water mill drill, and a supporting structure is synchronously installed. And S4, a foundation trench is excavated in the bottom of the inverted arch, a concrete strip-shaped foundation is poured to serve as a foundation of the steel corrugated pipe arch culvert, the steel corrugated pipe arch culvert is installed, the axis of the steel corrugated pipe arch culvert is consistent with the karst cave water flow direction, and the steel corrugated pipe arch culvert is in sealed butt joint with the confluence overhaul groove. And S5, a drainage pipe is pre-buried in the inverted arch reconstruction section, the confluence overhaul groove and the central drainage ditch are connected, and finally concrete is poured to seal the inverted arch structure. The method effectively solves the problem of upheaval of the inverted arch caused by water burst of the deeply-buried karst cave, reduces the damage of the lining structure, and improves the long-term stability of the tunnel.

The invention provides a concrete mixing plant system which comprises an aggregate storage system, the aggregate storage system comprises a plurality of bins separated by partition walls, a plurality of transversely-penetrating box culverts are arranged at the bottoms of the bins, openings communicated with the opposite box culverts are formed in the bottom walls of the bins in an array mode, and discharging weighing hoppers are arranged in the openings; a gallery belt which is coaxial with the box culvert and is positioned below the corresponding discharging weighing hopper is arranged in the box culvert; and a discharging platform which is higher than the bin and lower than the discharging road is arranged on the feeding side of the bin. Through the arrangement of the discharging platform, the material gathering hopper, the material distributing belt and the discharging trolley, the discharging and feeding process is smoother, the material transfer time is shortened, the aggregate storage and conveying efficiency is improved, and therefore the concrete production speed is increased, and meanwhile through a temperature control system, accurate calculation and control, the production efficiency is improved. Production stagnation or adjustment time caused by the temperature problem is reduced, the continuity of the production process is ensured, and the production efficiency of the mixing plant is integrally improved.

The invention belongs to the technical field of highway bridge and culvert engineering, and discloses a multi-span hole assembly type cover plate small bridge and culvert structure construction method which is characterized in that side walls, middle walls and cover plates are transported to a construction site to be assembled after being prefabricated, so that site formwork erecting work is effectively reduced, the construction process is simplified, and the construction efficiency is improved; the connection strength and the structural stability are improved through a grouting method, and then the problem of insufficient grouting of a bedding method is further solved through a secondary grouting method; the pre-embedded steel bar groups of the adjacent cover plates are welded and connected, and by utilizing an equivalent load preloading pre-deformation method in advance, cast-in-place connection areas can bear more uniform stress distribution after being fixedly connected, the stress state in the service stage tends to be more balanced, the crack initiation risk is reduced, and the overall stability and durability of the structure are improved; rigid connection is formed between the adjacent cover plates and the middle wall, the risks of cover plate damage, slab staggering and reflection cracks caused by displacement or looseness of the abutted seam are reduced, and the structural safety and the service life of the bridge and culvert are guaranteed.

The invention discloses a sluice construction project earthwork filling quality evaluation method and evaluation system based on real-time monitoring. The method comprises the following steps that soil pressure monitoring values and changes thereof in the earthwork filling process are monitored in real time through a soil pressure meter; selecting a box culvert section as a typical position, and establishing a three-dimensional finite element model of a filled soil body; calculating the three-dimensional finite element model of the filled soil body based on finite element analysis software, and inputting preset material parameters, boundary conditions and loads to obtain a soil pressure calculation value and changes thereof in the layer-by-layer filling process; performing comparative analysis on the soil pressure calculation value and the soil pressure monitoring value, and screening out reliable soil pressure monitoring values of different soil layers; according to the conversion relation between the compaction degree and the soil pressure, compaction degree monitoring values of different soil layers are obtained through calculation; the compaction degree monitoring value is compared with the designed compaction degree, and the earthwork filling quality is evaluated. The method can provide corresponding basis and reference for management and control of earthwork filling quality by managers.

The invention relates to the technical field of pipeline robots, and discloses a probing robot for automatically recognizing defects of a drainage pipe culvert under the water operation condition. The movement mechanisms cling to the inner wall of the pipeline and are used for detecting the movement of the robot; the rotating mechanism is rotationally mounted on the peripheral side of the robot body; the pressure mechanisms are fixedly mounted on the outer wall of the rotating mechanism, attached to the inner wall of the pipeline and used for collecting pressure value related electric signals; the detection system is mounted in the robot body; the detection system comprises a signal processor module, a wireless transmission equipment module and an infrared camera module; the pressure mechanism, the rotating mechanism and the detection system are matched to realize accurate positioning of defect points on the inner wall of the pipeline. Through combination of mechanical contact type detection and kinematic model positioning, high-precision spatial positioning and identification of the inner wall of the pipeline are realized in a high-turbidity and full-pipe water-carrying environment, and data support is provided for subsequent pipeline maintenance and repair.

The invention discloses a device for assembling prefabricated parts for tunnel construction, and relates to the field of tunnel construction. The prefabricated part splicing device for tunnel construction comprises a crane body and a side box culvert body, a calibration mechanism is arranged on the crane body and comprises a connecting plate, an inductor is fixedly connected to the top of the connecting plate, a supporting plate is slidably connected to one side of the crane body, an inductor is fixedly connected to the supporting plate, and the inductor is fixedly connected to the side box culvert body. The bottom of the crane body is fixedly connected with a fixing rod, the bottom of the fixing rod is slidably connected with a guide rod, one side of the guide rod is slidably connected with a U-shaped frame, and the U-shaped frame is in threaded connection with two bolts. When the device for assembling the prefabricated parts for tunnel construction is used by a user, it can be guaranteed that the side box culvert body can be conveniently calibrated by rotating the limiting blocks before falling, mechanical calibration is more accurate, the device can be adjusted by one person, labor is saved, the structure is simple, and assembling of the side box culvert body is convenient.

The utility model relates to a stable formwork structure for bridge and culvert engineering, which comprises a formwork, and a first formwork and a second formwork are arranged on one side of the formwork. According to the stable formwork supporting structure for the bridge and culvert engineering, the second formworks and the first formworks can be spliced by inserting the expansion inserting blocks into the first inserting grooves, so that the second formworks and the first formworks of the corresponding number can be spliced according to the size of a bridge and culvert, and through the arrangement, the stable formwork supporting structure has the advantage of being adjustable; the problem that adjustment cannot be carried out according to actual conditions of bridges and culverts is solved, the two first inserting grooves are connected with the two first inserting blocks or the second inserting blocks in an inserted mode, then the frame body and the first formwork can be connected, the first inserting grooves and the second inserting grooves are connected with the first inserting blocks or the second inserting blocks in an inserted mode, and therefore the frame body, the first formwork and the second formwork can be connected. And the screws penetrate through the first screw holes and the second screw holes and are connected in use position, so that the stability of the rack body can be kept through the supporting rods.

The invention belongs to the technical field of large deviation box culvert jacking construction under water-rich soft soil, and particularly relates to a water-rich soft soil roadbed underneath passing heavy haul railway special-shaped box culvert deviation rectifying device and a construction method. An underneath pass heavy haul railway box culvert jacking deviation rectifying device comprises an underneath pass special-shaped box culvert, a drilling fulcrum pile, a downlink rail and an uplink rail, the underneath pass special-shaped box culvert comprises a high box culvert and a low box culvert, lateral jacking mechanisms are arranged on the side faces of the high box culvert and the low box culvert respectively, and the outer sides of the lateral jacking mechanisms are connected with top plates; the bottom face of the high box culvert and the bottom face of the low box culvert are connected with a box culvert jacking base bottom plate, two side plate torsion mechanisms and a plurality of box culvert bottom plate jacking base mechanisms are arranged on the box culvert jacking base bottom plate, and bottom jacking mechanisms are arranged on the box culvert bottom plate jacking base mechanisms. The jacking mechanisms on the two sides and the bottom of the box culvert are utilized, the total station is combined, a control point transmission method is adopted, it is ensured that the box culvert is accurately in place according to the design axis, meanwhile, dynamic and accurate deviation correction is achieved, and the box culvert jacking construction efficiency is improved.

The utility model discloses a water conservancy irrigation area project diversion tunnel crossing karst cave structural design. The water conservancy irrigation area project diversion tunnel crossing karst cave structural design comprises second-stage diversion tunnel lining reinforced concrete, first-stage wrapping reinforced concrete, a karst cave, diversion tunnel foundation concrete, an upper drainage concrete culvert pipe, a lower drainage concrete culvert pipe, anchor bars, I-shaped steel and a temporary support. The diversion tunnel crossing karst cave section adopts encased concrete for safety guarantee of temporary support in the construction period so as to guarantee normal tunneling and excavation of the tunnel, culvert pipes are buried in foundation concrete of a tunnel bottom plate for small flood in the karst cave in the flood season to pass through, and when the karst cave encounters large flood, the flood can pass through the top of the encased concrete and the foundation culvert pipes on the lower portion of the encased concrete. According to the design, the downstream tunnel can be continuously tunneled under the condition that the safety of the temporary construction period is guaranteed, and meanwhile normal tunnel tunneling can still be guaranteed in the flood season even if flood exists in the karst cave.

The invention relates to the technical field of culvert pipe hoisting equipment, in particular to anti-cracking reinforced concrete culvert pipe machining hoisting equipment which comprises a hoisting platform, the hoisting platform is provided with a cage body hoisting mechanism for rapidly transferring a culvert pipe reinforcement cage, and the cage body hoisting mechanism is provided with an anti-shaking deviation rectifying mechanism for keeping the stability of the reinforcement cage. An anti-corrosion soaking mechanism for soaking the reinforcement cage to improve the corrosion resistance is arranged on the hoisting platform, a cage body conveying mechanism is arranged on the side face of the hoisting platform, the anti-shaking deviation correcting mechanism comprises a fixed protruding block fixedly installed at the end of a steel wire sling, and a plurality of branch steel cables are arranged on the fixed protruding block in the circumferential direction in an array mode. According to the device, the anti-shaking deviation rectifying mechanism is arranged, and a limiting convex block and a telescopic round pipe are matched with each other, so that a steel wire sling can be continuously and effectively limited in the hoisting process, the culvert pipe reinforcement cage can be effectively prevented from greatly swinging due to inertia, and a worker does not need to carry out auxiliary limiting on the culvert pipe reinforcement cage below.

The invention discloses a construction method of a double-hole box culvert in underground engineering. The construction method aims at solving the problem that the construction quality and the construction efficiency of an underground double-hole box culvert constructed by a formwork trolley system cannot be guaranteed. The method comprises the steps that supporting frame bodies of two adjustable trolley formwork systems and formwork systems are erected on the top of a poured box culvert structure side by side, formwork closing construction is conducted according to the sequence that a top formwork assembly is firstly closed, then corner formwork panels are closed and finally side formwork assemblies are closed, and the side formwork assemblies on the two sides of a middle wall of the double-hole box culvert are reinforced through opposite-pull screws; middle wall concrete is poured to the bottom of the top plate, after the structural strength of the concrete meets the requirement, a plurality of transverse supports are erected on the two sides of the middle wall for reinforcement, the outer side wall and the top plate are poured with the concrete, and after the structural strength of the concrete meets the requirement, the control system controls the adjustable trolley formwork system to demold; and the formwork moving trolley is operated to the bottom of the supporting frame body and drives the adjustable trolley formwork system to walk to the next to-be-poured section of the box culvert structure to be poured, and self-balance of the formwork system is achieved.

The invention discloses a supporting and reinforcing device for a roadbed culvert and a using method of the supporting and reinforcing device, and relates to the technical field of roadbed culvert reinforcement. A mounting shell is fixedly connected to the upper side of the mounting frame, two supporting plates are fixedly connected to the positions, located on the two sides of the mounting shell, of the upper side of the mounting frame, supporting columns are rotationally matched with the two sides of the supporting plates, an arc-shaped top plate is fixedly connected to the ends, away from the mounting frame, of the supporting columns, and a driving mechanism is arranged in the mounting shell; a driving mechanism is arranged, a driving motor drives a reciprocating lead screw to rotate, a linkage connecting rod enables a supporting column and an arc-shaped top plate to accurately ascend and descend, different pressures are adapted in real time, loads are evenly dispersed, a bottom anti-skid plate and moving wheels are matched, the stability of the culvert is guaranteed, installation and debugging are convenient, and the reinforcement efficiency and adaptability of the culvert are improved in an all-around mode.