899results about "Ground-work" patented technology

The invention relates to the technical field of engineering formwork trolleys, in particular to an integral box culvert electric formwork moving trolley and a construction method of the integral box culvert electric formwork moving trolley. The internal mold system is arranged in the box culvert and used for supporting and protecting the box culvert from the interior of the box culvert; the outer mold system is arranged outside the box culvert; the box culvert is supported and protected from the outside of the box culvert. The inner mold system comprises an inner mold trolley support, an inner mold walking mechanism, an inner mold plate and an inner mold fixing mechanism, the inner mold walking mechanism is used for driving the inner mold trolley support to do translational motion in the box culvert, the inner mold trolley support is used for supporting the inner mold fixing mechanism and the inner mold plate, and the inner mold fixing mechanism is used for fixing the inner mold plate to the inner wall of the box culvert; the trolley is provided with a top side formwork supporting system, the erecting procedure and time of a formwork support in a box chamber in traditional cast-in-place construction are optimized, the trolley is driven by a walking motor, the on-site assembling and disassembling time is shortened, and the box culvert construction period is shortened by 20%.

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 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 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 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 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 diversion construction method comprises a diversion canal and a to-be-expanded river channel, the to-be-expanded river channel is arranged below the diversion canal, the diversion canal and the to-be-expanded river channel are distributed in a vertical crossing mode, and the diversion canal part corresponding to the to-be-expanded river channel is a diversion section. The flow guide section conducts flow guide through the flow guide system and is reinforced and supported through the two reinforcing systems. The construction method comprises the following steps that firstly, steel pipe type selection is conducted; secondly, pre-supporting construction is conducted; step 3, mounting a steel grating arch frame; fourthly, a bracket is installed; 5, steel pipe hoisting; sixthly, end wall construction is conducted; seventhly, water is pumped through a flow guide section; 8, constructing a river channel to be expanded; ninthly, the channel bottom and the channel embankment are repaired; tenthly, the steel pipe and the bracket are dismantled; eleventhly, water is introduced into the diversion canal. The construction method does not occupy land, and avoids the problems of low cost and high efficiency in the conventional structure construction technology of underneath passing the large diversion canal.

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 provides a load shedding structure used under a goaf high-fill embankment and a construction method. The load shedding structure comprises an arch-shaped base body structure and multiple layers of arc-shaped earthwork standard rooms arranged on the outer side of the arch-shaped base body structure. The arch-shaped base body structure comprises multiple layers of tamped soil formed by filling layer by layer in sequence from bottom to top, and the width of each layer of tamped soil is gradually decreased layer by layer from bottom to top. Geocells are laid on the top face and the two side faces of each layer of tamped soil; a porous box culvert is arranged in the middle of the tamped soil on the lowest layer; the space between every two adjacent layers of arc-shaped geocells and the space between the arc-shaped geocell on the innermost layer and the arc-shaped base body structure are filled with arc-shaped filling soil; filling is conducted on the outer side of the arc-shaped earthwork standard room on the outermost layer to form roadbed filling soil; an expressway roadbed is paved on the top surface of the roadbed filling soil; and a plurality of layers of horizontal geocells are laid in the roadbed filling soil close to the highway roadbed.

The invention provides a phase change-moisture absorption and drainage composite roadbed structure in a seasonal frozen region and an intelligent regulation and control method, and relates to the technical field of roadbed design and renovation. The roadbed structure is characterized in that a plurality of gradient phase change material layers are arranged on the top surface of a roadbed surface layer; the multi-layer gradient phase change material layer, the high moisture absorption and drainage geotextile layer and the drainage pipe system are arranged from top to bottom; the phase change temperature intervals and the phase change latent heat of the phase change layers in the multiple gradient phase change material layers are different; the high moisture absorption and drainage geotextile layer is used for guiding water in the soil body into the drainage pipe system; the drainage pipe system is of a porous structure with the inclination angle within the set angle range and is used for guiding water in the soil into the drainage ditch. And the intelligent regulation and control system is used for dynamically regulating the thermal resistance of each phase change layer and the opening degree of the drainage pipe. According to the invention, the time of the roadbed in a relatively stable physical state can be prolonged, so that the purpose of preventing and treating winter frost heaving, frost boiling and mud rising in a spring melting period and other diseases caused by temperature change of the roadbed in severe cold areas is achieved.

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 utility model relates to the technical field of drainage, in particular to a water seepage and drainage blind pipe structure which comprises a water seepage and drainage blind pipe assembly, geotechnical cloth is attached to the outer wall of the water seepage and drainage blind pipe assembly, a butt joint assembly is installed on one side of the water seepage and drainage blind pipe assembly, and a second partition plate is installed on the inner wall of the water seepage and drainage blind pipe assembly. The water seepage and drainage blind pipe assembly comprises a pipeline, a connecting block is installed at the front end of the pipeline, an annular inserting block is arranged on one side of the pipeline, and a first sealing ring is connected to one side of the annular inserting block in a glued mode. According to the improved water seepage and drainage blind pipe structure, the sealing performance of the butt joint gap of the two sets of water seepage and drainage blind pipes is improved, accumulated water containing sludge is prevented from directly entering the water seepage and drainage pipes from the butt joint gap between the water seepage and drainage pipes, and the water seepage and drainage blind pipes are prevented from being blocked; the situation that water flowing in a pipeline seeps outwards from the bottom of the pipeline, and consequently the drainage efficiency is low is reduced.

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 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 invention relates to the technical field of municipal drainage, and discloses a suspension frame connecting pipe type drainage pipe culvert anti-deposition device and method.The suspension frame connecting pipe type drainage pipe culvert anti-deposition device comprises a suspension frame connecting pipe which is arranged along the axis of a drainage pipe culvert and used for guiding water flow and reducing sediment deposition, and the suspension frame connecting pipe is made of a corrosion-resistant material and provided with an internal flow channel; the bearing groove is located below the suspension frame connecting pipe and comprises a plurality of groove bodies, the two ends of each groove body are provided with an inserting opening and a bearing opening respectively, and the bearing groove is used for supporting the suspension frame connecting pipe and collecting overflow; the supporting rods or the wheel carriers and the rotating wheels support the suspension frame connecting pipes and the bearing grooves; the overflow plate is located on the upstream face of the uppermost bearing groove. By arranging the suspension frame connecting pipe, when the water flow in the drainage pipe culvert is small, water flow can preferentially flow through the suspension frame connecting pipe. As the cross sectional area of the frame connecting pipe is small, the water passing area of water flow is effectively reduced, the flow speed is increased, and mud and sand in the water flow are prevented from being deposited at the bottom of the pipe.

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.

The utility model discloses an assembly type box culvert waterproof structure, and relates to the technical field of assembly type box culverts, the assembly type box culvert waterproof structure comprises two adjacent box culvert bodies, a sealing device is arranged between the two adjacent box culvert bodies, and a plurality of groups of connecting devices used for fixedly connecting the two box culvert bodies are arranged between the two adjacent box culvert bodies; the sealing device comprises a plurality of sealing rings and a plurality of annular grooves, wherein the sealing rings and the annular grooves are arranged on the opposite inner sides of every two adjacent box culvert bodies correspondingly. The multiple sealing rings are clamped to the multiple annular grooves in a one-to-one correspondence mode. The possibility of leakage of the fabricated box culvert can be reduced.

A water level control unit (1) comprises a housing (2) having a flow channel (3). A valve element (7) is positioned so as to be rotatable inside the flow channel about the hinge axis (5) to close a lower section (LS) of the flow channel while dividing the flow channel into a first upstream side (FS) and a second downstream side (SS). The hinge shaft (5) is arranged at a height (y1) above the bottom of the flow channel. The valve element comprises a lower valve plate portion (7lo) depending from the hinge shaft in the closed position. A floating body (14) is provided on and connected to one side of the lower valve plate portion for moving the valve element from the closed position toward the open position according to an increase in water level (Lw) on a first upstream side in the flow passage.

The invention relates to a frozen soil road foundation structure and a construction method thereof, belongs to the technical field of frozen soil area road foundation enhancement, and solves the problems of frozen soil degradation, road foundation stability reduction and the like caused by external water entering a foundation in the prior art. The invention discloses a frozen soil road foundation structure. The frozen soil road foundation structure comprises a steel sheet pile retaining wall and a foundation main body structure, the steel sheet pile retaining wall is vertically arranged on the inner side of the edge of the cross section of a roadbed in the runoff upstream direction, the bottom of the steel sheet pile retaining wall is inserted into a permanent frozen soil layer, the edge of the tamping layer is connected with the downstream side of the steel sheet pile retaining wall, and the upper surface of the tamping layer is flush with the earth surface. By means of the structure, external incoming water is effectively obstructed, especially underground runoff is obstructed, the problems of frozen soil degradation, foundation stability reduction and the like caused by the external runoff are avoided, the phenomenon of differential settlement of a roadbed is relieved and even avoided, the pavement condition of the frozen soil road is effectively improved, and the service life of the frozen soil road is effectively prolonged.

A culvert-clearing system is provided. The system includes a base plate with alignment features, a pivotable winch assembly, and a scraper mechanism designed for bidirectional movement through a culvert. The winch assembly may be hydraulically powered and optionally retrofitted to existing winches using a conversion kit that integrates a hydraulic motor with a drive shaft via an adapter plate and coupler. The hydraulic motor is operated via a control unit and pump system to ensure proper torque delivery. A scraper assembly with angled arms and teeth is connected to a winch cable routed through a pulley assembly anchored at the far end of the culvert, enabling effective debris dislodgment and transport toward an accessible opening.

The invention relates to a box culvert construction process, which relates to the field of expressway box culvert construction, and comprises the following steps: after construction of a bottom plate and part of side walls of a box culvert is completed, dividing the whole box culvert into four construction sections by adopting a skip pouring mode, namely a pouring completion maintenance area, a slip form construction area, a steel bar pre-binding area and a construction preparation area; a formwork supporting frame device is assembled; the formwork device is moved to a slip form construction area and positioned; pouring construction is conducted on the slip form construction area; after pouring of one box culvert bin section is completed and the formwork removing condition is met, the side formworks are removed, then the top formwork is removed, and a pouring completed curing area is formed; the formwork device is moved to a constructed reinforcing steel bar pre-binding area, and repeated pouring construction is carried out; and box culvert construction operation is completed. The device has the effects that the template is automatically adjusted, the frame body is convenient to move, and positioning is simple.

The invention relates to the technical field of desilting, in particular to a desilting robot and a box culvert desilting method. The desilting robot provided by the invention is used for desilting a box culvert. The desilting robot comprises a machine body; the crushing mechanism is arranged on the machine body; the walking device is arranged at the bottom of the machine body and is suitable for walking along the box culvert; the crushing mechanism is arranged on the machine body and is used for crushing the deposits; and the bucket-wheel mechanism is arranged on the machine body and is used for transferring the deposits to the crushing mechanism. According to the desilting robot, the problem that in the prior art, the desilting mode of box culvert desilting equipment is single is solved, and therefore the adaptability of the desilting robot is improved.

The RPC steel bar box culvert structure comprises a displacement base and a box culvert body made of reactive powder concrete, and the box culvert body comprises a male connector, a female connector for receiving the male connector and an inner supporting frame arranged in the box culvert body; the inner supporting frame comprises inner supporting rings arranged in the length direction of the box culvert body, secondary supporting rings attached to the inner supporting rings, inner supporting ribs arranged around the inner supporting rings and welded to the multiple inner supporting rings in the length direction of the box culvert body, and secondary supporting ribs arranged around the secondary supporting rings and welded to the multiple secondary supporting rings in the length direction of the box culvert body. The reinforcing ribs are used for welding the inner supporting ring and the inner supporting ribs, and connecting ribs are arranged between the inner supporting ring and the secondary supporting ring.

The invention relates to the technical field of blocking dams, in particular to a dam body design and construction method based on waste gully management through coal gangue filling. The system comprises three parts: 1, initial dam body design; 2, designing a fill dam; and 3, stability analysis. A dam body design and construction method is designed and put forward, a stability analysis method for the stability of the original valley and the stability after backfilling is given, and the measures can effectively maintain the stability of a treatment site. The problems of land resource occupation and environmental destruction caused by coal mining can be practically solved, the land space can be expanded, the land utilization value is improved, the ecological environment of a mining area is improved, and land space greening treatment and agricultural cultivation soil fertility improvement are achieved.

The invention provides a crab embankment passing channel and an operation and maintenance method. The crab embankment passing channel comprises a box culvert section, an inlet section and an outlet section. The box culvert section penetrates through the dike body. The inlet section is connected with one end of the box culvert section and communicated with the outer beach. The outlet section is connected with the other end of the box culvert section and communicated with the inner beach, and the dike body is located between the outer beach and the inner beach. The crab migration channel solves the problem that water in an existing crab migration channel is easy to evaporate and dissipate.

The utility model relates to the technical field of road engineering drainage, in particular to a pavement drainage pipe and a pavement drainage structure. The pavement drainage pipe comprises an outer pipe; the outer pipe is arranged on a permeable layer of a highway pavement, one end of the outer pipe is a closed end, the other end of the outer pipe is an open end, the closed end is located in a highway and is higher than the open end, and permeable holes are formed in the pipe wall of the upper portion of the outer pipe in the radial direction. The utility model solves the problem of insufficient drainage capacity.

The utility model provides an adjustable supporting device for culvert construction, and solves the problems that the existing supporting device is usually supported by steel pipes, culverts are different in shape and size and generally comprise pipe-shaped culverts, box-shaped culverts and arch-shaped culverts, the arch-shaped culverts have different arc lengths, the supporting device is inconvenient to adjust according to the culverts of different structures, and the supporting device is inconvenient to adjust. The application range is limited, and inconvenience is caused. The supporting rods are controlled to move up and down by rotating the first rotating handles respectively, the top ends of the supporting rods abut against the bottoms of the arc-shaped supporting plates, and therefore the supporting device can adjust the heights of the top ends of the supporting rods respectively according to culverts of different structures so as to be flexibly suitable for the culverts of different structures.