557results about "Ground-work" patented technology

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 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 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 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 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 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 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 invention provides an intelligent deviation correction control method and system for box culvert pushing, and relates to the technical field of underground engineering construction.The method comprises the steps that a box culvert three-dimensional model is constructed by collecting construction related data; simulating the space change trend of the attitude structure of the box culvert under different working condition parameters by utilizing a virtual construction technology, generating a correction control instruction by combining with the box culvert three-dimensional model, and collecting attitude data of the box culvert after executing the instruction so as to adjust the attitude structure of the box culvert in the box culvert three-dimensional model to obtain a corrected box culvert three-dimensional model; and performing correlation analysis on the corrected box culvert three-dimensional model, the position data of the existing line, the trend data of the underground pipeline and the burial depth data to adjust the correction control instruction until the actual attitude deviation of the corrected box culvert three-dimensional model meets a preset box culvert construction condition. Intelligent deviation correction control over the box culvert in the incremental launching construction process is achieved, and the real-time sensing capacity and structural safety of box culvert incremental launching construction in complex underground engineering are improved.

This invention provides a precast box culvert for urban roads and its jacking construction method. The precast box culvert includes a precast box culvert body, with interfaces suitable for sealing and insertion at both ends. Multiple insertion holes are arrayed at the first end of the box culvert body, and multiple pins are arrayed at the second end of the box culvert body opposite to its first end. Each pin is adapted to be inserted into a corresponding insertion hole. A locking structure is provided between the pin and the insertion hole. When the first end interface of one box culvert body is inserted into the second end interface of another box culvert body, the locking structure locks the pin in the corresponding insertion hole. The precast box culvert and its jacking construction method provided by this invention not only ensure stable and reliable connection between adjacent box culvert bodies, but also eliminate the need for on-site secondary pouring during the jacking construction process, greatly improving the efficiency of jacking construction and shortening the construction cycle.

The utility model discloses a movable assembly type formwork for box culvert construction, which belongs to the technical field of box culvert formworks, and comprises an inner formwork and an outer formwork, the inner formwork comprises a bottom longitudinal beam, the bottom longitudinal beam is fixedly connected with a plurality of first support rods respectively, the first support rods are sleeved with first connecting pipes in a sliding manner, and the first connecting pipes are sleeved with second connecting pipes respectively; the end, away from the first supporting rod, of the first connecting pipe is slidably sleeved with a second supporting rod, transverse rods are fixedly connected to the second supporting rod, a second connecting pipe is arranged between the two transverse rods, hydraulic oil cylinders are fixedly installed on the first supporting rod, the second supporting rod and the transverse rods respectively, and inner formworks are detachably installed on piston rods of the hydraulic oil cylinders. The outer formwork comprises a support, an outer formwork is installed on the support, and idler wheels are installed at the bottom of the bottom longitudinal beam and the bottom of the support respectively. The utility model solves the problems that in the manufacturing process of the box culvert in the prior art, due to different sizes of the box culvert, the construction of a formwork is easily limited, the formwork is difficult to mount, dismount and circulate, the construction period is seriously restricted, and the construction cost is increased.

The present invention relates to the technical field of water interception and drainage structures, and discloses a single-channel water interception and drainage structure that can be quickly constructed, including a water inlet dam, an intermediate dam, a water outlet dam and at least one drainage pipe arranged in a water channel. Along the flow direction of water in the water channel, the water inlet dam, the intermediate dam and the water outlet dam are arranged in sequence and at intervals, and the water channel has a water inlet area, a water isolation area and a water stop area; the drainage pipe has a water inlet end and a drainage end, and the drainage pipe passes through the water inlet dam, the intermediate dam and the water outlet dam in sequence, and the water inlet end extends into the water inlet area, the drainage pipe extends to the outside of the water channel, and the drainage end extends to the drainage area, the water in the water inlet area enters the drainage pipe from the water inlet end, is led to the drainage area by the drainage pipe, and is discharged into the drainage area by the drainage end; the water inlet end has a water inlet, and the water inlet is provided with a filter layer formed by weaving metal wire strips.

The invention relates to the technical field of building and ecological engineering, and discloses a bamboo-based wetland soft soil roadbed reinforcing method which comprises the following steps: S1, preparing a plurality of bamboo rafts or mortar bamboo pipes for later use; s2, flattening the soft soil roadbed of the wetland to a designed elevation; s3, laying anti-seepage geotechnical cloth; s4, laying the manufactured bamboo rafts or mortar bamboo pipes; s5, laying water seepage geotechnical cloth; s6, if the bamboo rafts are laid in the step S4, gravel soil of 15-25 cm continues to be laid, another layer of bamboo rafts are laid again, and if the mortar bamboo pipes are laid in the step S4, the step is omitted; s7, gravel soil with the thickness of 20-35 cm continues to be laid; and S8, continuously paving the upper-layer pavement. According to the reinforcing method, the rigidity and gap distribution characteristics of bamboo are utilized, the vehicle load is homogenized, the soft foundation bearing capacity is enhanced, the seepage-proof geotextile isolates the soil body, gaps between bamboo layers are communicated with wetland water bodies on the two sides, microorganism exchange and ecological balance are promoted, the material cost is greatly saved, and the construction period is shortened.

The utility model relates to the technical field of municipal road engineering culvert construction, and discloses an assembly type box culvert with a double-tooth cover plate, which comprises an assembly type box culvert body and a cast-in-place bottom plate, the box culvert body is composed of a top plate and two wing side plates, the lower part of the top plate is provided with a trapezoidal plate tooth structure which is used for being connected with side walls and is in bilateral symmetry, and the two wing side plates are arranged on the lower part of the trapezoidal plate tooth structure. Four reserved fixed hoisting bolts used for hoisting construction are arranged on the upper portion of the top plate, polygonal supporting feet which have the vertical supporting effect and are connected with a bottom cast-in-place slab are arranged at the bottoms of the side plates, prefabricated extending steel bars on the inner sides of the supporting feet are connected with cast-in-place concrete, cast-in-place is conducted on the concrete bottom plate before hoisting construction is completed, and longitudinal connection stability is guaranteed. The fabricated box culvert cover plate is provided with the preformed holes and the plate tooth structures, it is guaranteed that the cover plate is evenly stressed in the hoisting process, the cover plate is firmly connected with the two wing side plates, transverse displacement of the side plates is limited, and the box culvert is prevented from being damaged or losing the mechanical property in the construction and service process.

This invention relates to the field of pipeline construction technology and discloses a positioning mold for thin-layer concrete mortar strip application in culverts. The mold includes positioning rings consisting of two connecting blocks, each fitted around the outside of two culverts. The scraping assembly includes a scraper blade I positioned between the two positioning rings for scraping off excess mortar, a receiving groove inside the scraper blade I, and a scraper blade II slidably inserted into the receiving groove for adjusting the overall length of the scraper blade I. Screws are rotatably connected to the outer sides of both scraper blade I and scraper blade II, and the external threads of the screws are fitted with mounting blocks fixed to adjacent connecting blocks. This invention allows construction workers to easily fill and smooth the annular gap between two culverts, helps control the width of the mortar strip, and facilitates the scraping off of excess mortar, resulting in high workability.

The utility model discloses a road structure suitable for a valley terrain. The road structure comprises an original foundation excavation step, a cement concrete pile, a sand cushion layer, a cement concrete plate, a pipe culvert, waterproof geotechnical cloth, a cement concrete wall, a hard geocell, a pavement structure and an EPS (Expandable Polystyrene) filling block. The pile foundation structure and the cement concrete plate are arranged at the bottom of the road structure, the cement concrete wall pairs divide the EPS filling area into a plurality of units and make direct contact with the exposed part of the pipe culvert to fix the pipe culvert, the hard geocell is laid on the cement concrete-EPS composite roadbed, and the pavement structure is laid on the geocell which is backfilled with plain soil. Through the combined arrangement of the pipe culvert and the sand cushion layer, smooth drainage of the valley terrain is guaranteed, the waterproof effect of the EPS roadbed is guaranteed through the arrangement of the reinforced concrete pouring structure and the waterproof structure layer, the pile foundation can transmit loads to a deeper soil layer with higher bearing capacity, construction is convenient, noise is avoided, and differential settlement of the roadbed is effectively reduced.

The invention relates to the technical field of rainwater and sewage pipe culvert construction, in particular to a rainwater and sewage square culvert tail end plugging stop block and a construction method.The rainwater and sewage square culvert tail end plugging stop block comprises a plugging block, the side end face of the plugging block is of a right trapezoid structure with the narrow upper portion and the wide lower portion, the upstream face of the plugging block is a vertical face, and the downstream face of the plugging block is an inclined face; second haunch angles matched with the first haunch angles at the bottom of the square culvert are arranged on the two sides of the bottom of the plugging block respectively, and a hanging ring is arranged at the top of the plugging block. The gravity type trapezoidal structure with the narrow upper portion and the wide lower portion is adopted, the anti-floating capacity and the anti-overturning capacity are high, large-flow and high-flow-speed water flow impact can be resisted, the check blocks are prefabricated parts and only need to be hoisted in place on site, the underwater operation risk is avoided, the plugging construction time is greatly shortened, and a follow-up construction working face can be rapidly provided.

The utility model relates to the technical field of blind ditches, and provides an assembly type water seepage and drainage blind ditch which comprises a plurality of main bodies which are connected end to end, and each main body comprises a water drainage pipe used for water drainage after being connected; the support is used for supporting the drainage pipe, one side of the support is provided with an installation hole, the other side of the support is provided with a guide column, and the guide column of the adjacent body is used for sliding into the installation hole of the adjacent body. By means of the technical scheme, the problems that in the prior art, blind ditch composition materials are complex, and each material is not a finished product and needs to be automatically machined or remachined after being purchased are solved.

The present invention relates to a modular jacking construction method for a double-hole rectangular frame box culvert, comprising the following steps: S10. Force analysis of the double-hole frame box culvert to obtain bending moment and shear force information; S20. Determination of the distance between the bending moment zero point and the side walls and middle wall; S30. Determination of the distance between the shear force zero point and the side walls and middle wall; S40. Splitting the double-hole frame box culvert longitudinally based on the bending moment zero point and the shear force zero point; S50. Installation of post-cast strips on the double-hole frame box culvert; S60. Installation of steel bar connectors and steel edge rubber waterstops on the double-hole frame box culvert; S70. Arrangement of temporary beam foundations and piers, and erection of temporary beams; S80. Installation of a half-hole box culvert and provision of temporary rigid supports; S90. Installation of the remaining box culverts; S100. Finalization of the double-hole frame box culvert construction; and S110. Completion of construction. The present invention has the beneficial effect of rationally splitting the double-hole frame box culvert.

The invention relates to the technical field of landslide disaster treatment, and discloses a cutting section landslide treatment method and structure based on a steel corrugated plate, which adopts an innovative combined structure of the steel corrugated plate and a reinforced concrete lining to realize advantage complementation of flexibility and rigidity; wherein the steel corrugated plate can effectively resist external soil pressure and flexibly absorb settlement deformation of a foundation by virtue of extremely high axial compressive strength and excellent deformation adaptive capacity, and meanwhile, the steel corrugated plate is used as a supporting template of a concrete structure, so that the aim of quickly implementing protection is fulfilled; the reinforced concrete lining greatly improves the overall rigidity and the shear strength of the structure, and the problem that a pure steel structure is prone to local instability is fundamentally avoided; and the two synergistically form a strong retaining system, so that the treatment effect is lasting and stable, and potential safety hazards are thoroughly solved.

The box culvert structure for the water gate pump station comprises a box culvert body, the top end of the box culvert body is connected with a top block, the side walls of the two sides of the box culvert body are each connected with a plurality of sets of bottom blocks, the side walls of the box culvert body are provided with a ladder stand mechanism, a protection mechanism is installed on the ladder stand mechanism, and the top block and the bottom blocks are perpendicularly distributed. The pedal is square, a person can conveniently step on the pedal and is not prone to slipping, then the hand can grasp the round rods located on the two sides, the hand can conveniently grab the round rods without hurting the palm, and therefore the effect of climbing use is achieved, dust and sundries are conveniently pushed out from the side hole by means of the side hole flush with the top end of the pedal, and the safety of climbing is improved. Therefore, dust and sundries are prevented from being directly pushed out from the front, and the dust and the sundries are pushed to the body of a climber.

The invention discloses a soft soil area newly-built box culvert short-distance crossing operation subway line construction method which comprises the steps that positioning paying-off and blocking are conducted in a construction area, and before a foundation pit is excavated, ballasting bags with the specific stacking weight and height are arranged in the center of a corresponding subway tunnel rail according to the linear meter; holes are formed in the uplift pile positioning positions on the two sides of the subway tunnel, a first section of pile casing is hoisted and pressed downwards till the first section of pile casing sinks, the perpendicularity is adjusted, a rotary drilling machine takes soil to enable the pile casing to sink, all sections of pile casings are sequentially inserted into the designated burial depth, a reinforcement cage is put down to pour concrete, the pile casings are pulled out after the strength reaches the standard, and a cushion layer is made; the uplift pile end reinforcing steel bars on the same side are connected through reinforcing steel bar nets to form an uplift beam net, box culvert bottom plate reinforcing steel bars are bound, and an uplift pile, uplift beam and box culvert bottom plate integrated structure is formed through formwork erecting and pouring. According to the technical scheme, disturbance of construction to the subway tunnel can be reduced, and operation safety is guaranteed.

The utility model discloses a splayed wall forming die which comprises a machine frame, a bottom die plate is installed on the machine frame, a vertical die with an opening in the top is arranged on the bottom die plate, the lower portion of the vertical die is transversely communicated with a transverse die, and a pouring space is formed by the bottom die plate, the vertical die and the transverse die. The vertical mold comprises a vertical front side plate and a vertical rear side plate which are arranged on the bottom mold plate, and vertical outer side plates are arranged on the two side faces of the same sides of the vertical front side plate and the vertical rear side plate in a sealed mode. The transverse mold comprises a transverse bottom plate arranged on the bottom mold plate, a partition plate inclining from the bottom face of the transverse bottom plate and extending in the direction away from the vertical rear side plate is arranged on the transverse bottom plate, the partition plate is located in the pouring space, the two ends of the partition plate are connected between the two opposite vertical outer side plates, one end of the partition plate is close to the vertical rear side plate, and the partition plate and the two vertical outer side plates are covered with a top plate. By arranging the structures such as the vertical mold and the transverse mold which are communicated with each other, the problems of inaccurate reinforcement cage positioning and low concrete pouring quality during on-site manufacturing can be solved, the influence of weather and environment on construction is reduced, and the construction safety is improved.

A precise adjustable vertical supporting rod for formwork construction comprises a top end pipe, a middle pipe and a smooth push rod system. The smooth push rod system comprises an outer sleeve, a push rod, a push plate, a clamping groove disc, a tightening plate, a pedal plate and a spring, the top end pipe, the middle pipe and the outer sleeve are sequentially nested, the clamping groove disc is fixed in the outer sleeve, the push rod penetrates through the clamping groove disc, the tightening plate and the push plate, and a notch is formed in one end of the tightening plate and clamped in a clamping groove part of the clamping groove disc; the push plate is placed on the upper side of the clamping groove disc, the middle of the pedal is connected with the outer sleeve through a rotating shaft, and one end of the pedal extends into the space between the push plate and the clamping groove disc. A platform is arranged at the top of the push rod, the springs comprise the first spring and the second spring, the first spring is arranged between the push plate and the platform, and the second spring is arranged between the lower surface of the clamping groove disc and the tightening plate. The top of the top end pipe is connected with a supporting plate which makes direct contact with a construction formwork. According to the utility model, the height is directly adjusted through pedal operation, so that the accuracy is improved, and the operation risk is reduced.

The utility model provides a spliced portable water guide device. The spliced portable water guide device comprises a water retaining device and a flow guide device, the water retaining device is arranged at a culvert water inlet and comprises a plurality of first water retaining sections and two second water retaining sections. The multiple first water retaining sections and the two second water retaining sections are spliced into a strip-shaped structure, and the multiple first water retaining sections are located between the two second water retaining sections; the cross section of the first water retaining section and the cross section of the second water retaining section are each of an L-shaped structure. A water guide opening is formed in the face, close to the culvert water inlet, of the first water retaining section, and the water guide opening is in threaded connection with the flow guide device, so that the problem that the construction efficiency is affected due to the fact that the flowing water flow guide difficulty of a lengthened culvert is large is solved.

The utility model discloses a flood drainage structure for underneath passing through immovable cultural relics, which adopts an underground flood drainage channel to underneath passing through the immovable cultural relics, and a flood drainage pump station, a water outlet pressure box culvert, an open type water inlet, the underground flood drainage channel and a water outlet are sequentially arranged along the flow direction of flood drainage water flow; the upstream of the pump station is connected with the built river channel, and the downstream is connected into the open water inlet through the water outlet pressure box culvert. The open type water inlet is reconstructed from an underground drainage channel construction vertical shaft and also serves as a system surge shaft. The top elevation of the underground drainage channel needs to be lower than the lowest elevation of cultural relics. The water outlet is provided with a drainage check gate capable of being remotely and automatically controlled, and a submersible sewage pump is arranged for discharging silt and emptying a flood drainage channel for overhauling. The flood drainage channel is located underground and has no influence on cultural relics; the floor area is small, and the influence on traffic, electric power and other infrastructures along the line is small; compared with a conventional open-cut river channel, the pressure drainage section is small in section, little in spoil and low in spoil disposal difficulty; and non-excavation equipment in the existing traffic field is utilized, so that the investment is controllable.

Structural cell formwork, cells and matrices using the structural cells for positioning below a hardscape that define a void space therein, the structural cell formwork, cells, matrices using the cells and methods of assembly allowing in one embodiment the introduction of a structural fluid such as concrete to provide an alternative structural cell and matrix product.