40results about "Ground-work" patented technology

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 relates to water conveyance engineering technical field, concretely relates to a long distance tunnel water conveyance device. The device includes import box culvert section, water conveyance tunnel section and pressureless tunnel section, import box culvert section, water conveyance tunnel section and pressureless tunnel section are all horizontal section, the import shaft is arranged between import box culvert section and water conveyance tunnel section, the top of import box culvert section is communicated with import shaft, and one end of water conveyance tunnel section is communicated with the bottom of import shaft, the export shaft is arranged between water conveyance tunnel section and pressureless tunnel section, the other end of water conveyance tunnel section is communicated with the bottom of export shaft, and pressureless tunnel section is communicated with the top of export shaft. The utility model can realize tunnel section smooth full pipe, greatly restrain the difficult to predict clear full flow separation point movement, intense pressure pulsation and water flow turbulence in water filling mode.

Disclosed are geotextiles configured for moisture management. In exemplary embodiments, a geotextile comprises a plurality of structural elements including one or more yarns, cords, or filament bundles arranged to form a fabric or grid. At least a portion of the structural elements include capillary-active surfaces and / or are configured to promote capillary wicking of moisture along at least one direction of the geotextile. At least a portion of the structural elements include internal void regions configured to maintain hydraulic conductivity under compaction. The geotextile is operable for providing dual-mode moisture transport through both capillary wicking and hydraulic flow thereby allowing for removal and redistribution of water from pavement layers and subgrade soils.

This invention discloses a method for maintaining a temporary access road when an elevated trestle bridge passes under an existing railway frame bridge. The existing railway frame bridge is a double-span drainage culvert. The method includes: constructing a traffic culvert on one side of the double-span drainage culvert, while retaining the other side as a drainage culvert; constructing a temporary steel bridge within the traffic culvert to form a construction passage across the bottom slab of the existing frame culvert; connecting the temporary steel bridge with the passages on both sides of the double-span drainage culvert to form a temporary access road; maintaining clearance between the temporary steel bridge and the bottom of the traffic culvert; and spacing between the temporary steel bridge and the two sides of the traffic culvert; the temporary steel bridge is a single-lane bridge with height and width restrictions. This invention enables low-clearance crossing while ensuring smooth drainage during the flood season.

The application relates to the technical field of water conservancy projects, and discloses a large-section prefabricated and assembled box culvert structure suitable for cold and arid areas and a construction method, a top plate unit comprises a plurality of sequentially connected first prefabricated components, the first prefabricated components are in overall H-shaped structures, and the two sides of the first prefabricated components are provided with first joints at bottom ends; a bottom plate unit comprises a plurality of sequentially connected third prefabricated components, the two sides of the third prefabricated components are provided with third joints; a side wall unit comprises a plurality of sequentially connected second prefabricated components, the second prefabricated components are in overall L-shaped structures; one side end of the second prefabricated component is provided with a second upper joint matched with the first joint, and the other side end is provided with a second lower joint matched with the third joint. The box culvert is split into a plurality of H-shaped first prefabricated components, a plurality of L-shaped second prefabricated components and a plurality of third prefabricated components, the size and weight of a single prefabricated component are reduced, and the engineering implementation difficulties of the large-section box culvert in the prefabrication, transportation and on-site hoisting processes are solved.

This utility model discloses a culvert reinforcement structure for resisting settlement in soft soil subgrade, comprising: a culvert body and a load-bearing foundation. The load-bearing foundation is buried underground and filled with a waterproof material. The bottom area of ​​the load-bearing foundation is larger than its top area. The culvert body is located on top of the load-bearing foundation. The two ends of the culvert body are an inlet and an outlet, respectively. The inlet is equipped with a filter structure detachably connected to the culvert body, located below the inlet. The load-bearing foundation effectively disperses pressure, while the waterproof material enhances its waterproofing performance, preventing the underlying soil from softening due to moisture. This avoids significant settlement of the culvert body, ensuring its stability and significantly reducing the frequency of inspection and maintenance. By installing a filter structure at the inlet of the culvert body, foreign objects are effectively intercepted and concentrated below the inlet, ensuring stable operation of the culvert. This also significantly reduces the difficulty of cleaning operations and maintenance costs.

The utility model discloses an assembly type box culvert steel formwork which comprises a steel formwork body, the interior of the steel formwork body is designed to be of a hollow structure, a hollow cavity in the steel formwork body forms an inner formwork cavity of a box culvert, and side formwork frames are fixedly installed on the outer walls of the two sides of the steel formwork body. A plurality of sets of assembling bases distributed at equal intervals are fixedly installed on the outer walls of the two sides of the front end of the side mold frame, each set of assembling bases is composed of two positioning blocks jointly, the two positioning blocks are spaced by a certain distance, and assembling wedge blocks matched with the assembling bases are fixedly installed on the outer walls of the two sides of the tail end of the side mold frame. According to the box culvert steel formwork assembling device, two steel formworks can be quickly positioned and connected, the actual using effect of quick positioning and assembling is achieved, and therefore the overall assembling efficiency of the box culvert steel formworks can be effectively improved, and the assembling efficiency of the box culvert steel formworks is improved. Therefore, the overall construction efficiency of the box culvert steel formwork can be improved, and the box culvert steel formwork has a good actual use effect.

The utility model provides a bridge culvert drainage device, including drainage well, the drainage well top installation and top cover, the top cover upper surface installs the import and export, install detachable apron in the import and export, the drainage well inner bottom is provided with many submersible pumps, the drainage well lower extreme outer surface installs the water inlet pipe, the top cover upper surface is away from the side of import and export and has set up the vertical hole, install the standpipe in the vertical hole, the standpipe lower end extends to the drainage well inner bottom, install detachable axial flow fan on the standpipe upper end, the utility model has the beneficial effect that realizes to the deep drainage well of depth and carries out forced ventilation, improves the security of personnel down to the drainage well.

This utility model relates to the field of precast culvert technology, and particularly to a precast culvert for hydraulic construction, comprising a precast culvert body, a protrusion fixedly connected to the right end of the precast culvert body, the precast culvert body and the protrusion being an integral structure, the four corners of the outer surface of the protrusion being arc-shaped, a slot being opened inside the precast culvert body, and a support device being fixedly connected to the inner wall of the precast culvert body. The precast culvert for hydraulic construction described in this utility model has a receiving cavity opened at the left end of the precast culvert body, and a rubber strip is fixedly connected to the inner wall of the receiving cavity. Because the rubber strip is made of rubber, when two precast culvert bodies are joined, the rubber strip acts as a buffer component while also improving the sealing performance, facilitating use.

This invention discloses a combined hydraulic box culvert formwork trolley based on disc-lock scaffolding, comprising a movable base, on which disc-lock scaffolding is detachably mounted; side formwork is provided on both sides and supported by support rods; a top formwork is provided on the upper side and supported by screws; the base includes first channel steel on both sides and a second channel steel in the middle, with multiple rollers and wheel rails for supporting and running the rollers; a hydraulic assembly is fixed on the upper side of the first channel steel for driving the wheel seats and rollers to move and lift the base off the ground. The disc-lock scaffolding structure, supported by the movable base, allows the scaffolding to be moved to the next section of construction after one section of box culvert construction is completed, eliminating the cumbersome process of dismantling and rebuilding the scaffolding, greatly shortening the construction process, saving time, and improving construction efficiency.

The application discloses a kind of karez reinforcement protection methods using egg-shaped culvert, comprising the following steps: S1: the silt of karez culvert reinforcement section is cleaned;S2: support mechanism is used to support egg-shaped culvert, then egg-shaped culvert is used to reinforce culvert, and egg-shaped culvert is inscribed by half-elliptical section and half-round section;S3: the gap between culvert wall and original karez wall is filled with sand or sand gravel consistent with the surrounding stratum, and a layer of geomembrane is wrapped outside the joint;S4: according to the different forms of road and facility occupying karez shaft, the targeted reinforcement method is used for the required reinforcement of the shaft.The device can maximize the adhesion with karez culvert by setting the egg-shaped culvert, which can maximize the reduction of damage to the cultural relics and the original architectural style, the egg-shaped culvert has good compression resistance, is convenient for inspection and dredging, reduces water leakage loss, and effectively reduces construction cost.

This utility model relates to the technical field of box culvert connection, and particularly to a structural design for extending an existing concrete box culvert. Its construction is simple and convenient, effectively improving construction efficiency, shortening the construction cycle, and ensuring structural safety and stability. It includes a concrete box culvert, a corrugated steel box culvert, and a connection mechanism for connecting the concrete box culvert and the corrugated steel box culvert. The connection mechanism includes reinforcing bars embedded in the concrete box culvert, an enlarged flange detachably connected to the reinforcing bars, a rib plate fixedly connected to the enlarged flange, an installation flange fixedly connected to the end of the corrugated steel box culvert, and a steel template surrounding the connection point between the concrete box culvert and the corrugated steel box culvert. One end of the steel template is detachably connected to the enlarged flange, and the other end of the steel template is connected to the outer wall of the corrugated steel box culvert. The steel template, the enlarged flange, the rib plate, and the outer wall of the corrugated steel box culvert form a closed cavity, which is filled with concrete.

This utility model discloses a plug-in type anchor bolt hole positioning device for precast culvert cover plates, comprising: a distance adjusting beam, detachably fixed at both ends on the side formwork; a top positioning component, adjustable left and right on the distance adjusting beam and connected to the top of the anchor bolt sleeve for fixing the anchor bolt sleeve; and a bottom plate rubber plug inserted into the bottom of the anchor bolt sleeve to prevent concrete slurry from entering the anchor bolt sleeve. This utility model is simple to manufacture, easy to install and disassemble, and reusable. It effectively solves problems such as anchor bolt hole misalignment, tilting, floating of pre-reserved pipes during concrete pouring, and concrete slurry blockage, preventing slurry from entering the anchor bolt sleeve during concrete pouring and reducing concrete waste. Furthermore, it significantly improves construction efficiency and reduces construction costs.

The utility model discloses a kind of piece type maintenance-free UHPC joint assembly type culvert structure, comprising: roof, left side plate, right side plate and bottom plate;Left side plate and right side plate are symmetrically arranged on the left and right sides of bottom plate;Between left side plate and bottom plate, between right side plate and bottom plate are all connected by UHPC joint;Left side plate inner side upper portion and right side plate inner side upper portion are all equipped with corbel;Roof is set on the top of two corbel.The utility model has strong overall performance, component shape is simple, prefabricated and assembled degree is high, substantially reduces site pouring operation amount, improves construction efficiency.

Disclosed are geotextiles configured for moisture management. In exemplary embodiments, a geotextile comprises a plurality of structural elements including one or more yarns, cords, or filament bundles arranged to form a fabric or grid. At least a portion of the structural elements include capillary-active surfaces and / or are configured to promote capillary wicking of moisture along at least one direction of the geotextile. At least a portion of the structural elements include internal void regions configured to maintain hydraulic conductivity under compaction. The geotextile is operable for providing dual-mode moisture transport through both capillary wicking and hydraulic flow thereby allowing for removal and redistribution of water from pavement layers and subgrade soils.

The application provides a material and method for improving the anti-permeability and anti-cracking performance of a municipal road rainwater ditch concrete box culvert, and belongs to the technical field of building materials. The concrete loaded with siliceous powder particle fillers comprises concrete, siliceous powder particle fillers and slag, and is mixed with cement, coarse aggregate and high-performance anti-cracking waterproof agent to form a concrete base surface. Polyurethane waterproof paint is selected as a waterproof layer on the concrete base surface. The construction method comprises the following steps: site cleaning; excavation and construction of drainage; optimization of the mixing proportion of concrete; enhanced vibration; reduction of concrete porosity; layered construction; overall chiseling treatment of the construction joint surface; ensuring the cleanliness and flatness of the concrete base surface; creating a suitable curing environment, strengthening the curing of the concrete; and optimization of the waterproof layer material. The material and method provided by the application can improve the anti-permeability of the concrete, and make it more suitable for the construction of box culverts.

The application discloses a prefabricated beam fixing device and a using method, relates to the technical field of prefabricated beam fixing, and comprises a main frame, a lifting mechanism arranged in the main frame, a tilt angle adjusting seat connected to a movable end of the lifting mechanism, a housing and an internally rotationally connected worm of the tilt angle adjusting seat, a shaft rod rotationally connected in the housing, a worm wheel sleeved on one side of an outer wall of the shaft rod, the worm wheel and the worm being in meshing connection, a motor installed on a top surface of the housing, and an output end of the motor in transmission connection with a top end of the worm. The prefabricated beam fixing device is used in cooperation with the lifting mechanism, the tilt angle adjusting seat, a supporting frame and a clamping mechanism, so that the fixing device can adjust the tilt angle of a prefabricated beam workpiece according to engineering requirements, the position, angle and orientation of the prefabricated beam workpiece are adjusted more conveniently by using the method of the application to control the device, and the traditional manual intervention is replaced.

The utility model discloses an assembly type box culvert with good bearing effect, which comprises a box culvert and a pipeline interface arranged on one side of the box culvert, a horizontal support plate is symmetrically embedded on one side of the box culvert close to the pipeline interface, a longitudinal support plate is fixed between the horizontal support plates, the longitudinal support plate is symmetrically arranged on both sides of the pipeline interface, a plurality of inclined support plates are evenly fixed between the horizontal support plates and the longitudinal support plates, and the inclined support plates, the horizontal support plates and the longitudinal support plates cooperatively form a triangular structure. Through the above structure, the horizontal support plate is embedded on one side of the box culvert close to the pipeline interface, the longitudinal support plate is welded between the horizontal support plates, and the inclined support plate steel mesh is evenly welded between the horizontal support plate and the longitudinal support plate, so that a stable triangular support structure is formed, the bending resistance and the shearing resistance of the box culvert with a notch are improved, the bearing capacity of the box culvert is improved, and the problem of the decrease of the bearing capacity caused by the through hole in the box culvert is avoided.

This utility model relates to the field of highway engineering construction technology, specifically to a lightweight prefabricated high-performance concrete box culvert. It addresses the current problem in culvert manufacturing that the common practice of precasting and then transporting large-span culverts leads to time-consuming and labor-intensive processes, and results in a large number of precast segments, ultimately impacting construction costs and efficiency. This culvert mainly consists of a cast-in-place base slab, precast side walls and corbels, a precast top slab, and cast-in-place concrete. By intensively producing the side walls and top slab in a factory and casting the side walls in stages, a monolithic structure supporting the corbels is formed. The precast side walls and top slab are then transported to the site for rapid installation, with inter-slab sealing strips preventing concrete leakage during casting. Horizontal adjusting screws at the side walls ensure overall tension and leveling of the culvert, effectively improving transportation efficiency and installation quality.

The present application belongs to cast-in-place concrete formwork installation technical field, specifically relates to a culvert wing wall formwork positioning device and positioning method thereof, the device includes support frame, three positioning rods which can be advanced and retreated relative to the support frame are installed on the support frame, and the end points of the three positioning rods constitute a formwork positioning surface; the method comprises the following steps: (1) determining the slope m of the wing wall formwork; (2) positioning the culvert wing wall formwork positioning device, and determining the distance A from the culvert wing wall formwork positioning device to the bottom edge of the wing wall formwork; (3) calculating the extension length B of the lower layer positioning rod relative to the support frame according to the slope m of the wing wall formwork, the height h1 of the lower layer positioning rod from the ground, B = h1 / m + A; (4) calculating the extension length C of the upper layer positioning rod relative to the support frame according to the slope m of the wing wall formwork, the height h2 of the upper layer positioning rod from the ground, C = h2 / m + A; the principle of three-point determination of a plane is adopted, and the overall structure is simple; by using the device, the construction quality and work efficiency can be improved.

This invention relates to the field of culvert dredging technology, specifically a quick-installation and quick-dismantling accordion-type culvert sealing and dredging system and its usage method. It includes an accordion-type inflatable sealing device, a detachable sliding rail device located between the culvert and the sealing device, and an inflatable device connected to the sealing device. The sealing device includes two driven piles and an accordion-type airbag located between the two driven piles. The accordion-type airbag inflates to complete the sealing operation. The sliding rail device includes a sliding rail fixedly connected to the upper end of the culvert outlet. This invention, based on the accordion-type inflatable airbag structure, achieves quick installation and quick dismantling of culvert sealing through rapid inflation and deflation. The fixed track to the culvert ensures that the accordion-type airbag moves along the track during inflation, preventing the airbag from being blown open by water flow. After use, the track can be removed for reuse in other culverts.

This invention discloses a dual-blended concrete, its preparation method, and its application, relating to the field of concrete technology. The dual-blended concrete comprises the following components by weight: 100 parts cement, 20-35 parts slag powder, 15-35 parts limestone powder, 300-450 parts fine aggregate, 400-550 parts coarse aggregate, 60-85 parts water, and 0.8-2.0 parts polycarboxylate superplasticizer. This invention replaces fly ash with widely available and stable limestone powder, completely avoiding the influence of geographical, seasonal, and production capacity limitations on fly ash supply, ensuring the continuity of raw material supply and the stability of the mix proportion; and through a reasonable ratio of slag powder to limestone powder, the cement usage is reduced by 20%-30%; and early strength is improved, with excellent workability, making it suitable for high-performance projects requiring high-quality manufactured sand and gravel content and pumping heights ≥50 m.

The application relates to the technical field of box culvert construction, and discloses an assembled composite prefabricated box culvert, which is used to solve the problems of structural safety, large space occupation during transportation of the prefabricated box culvert and the need of additional connecting pieces between the box culverts during assembly of the box culverts, by setting the bottom die and the top die into L-shaped plates with an included angle of 90 degrees, which can reduce the space occupied by the die during transportation, and can facilitate positioning and fixing of the top die and the bottom die during assembly of the top die and the bottom die; during the fixing process, the top die and the two bottom dies are connected in a staggered mode, so that the combined box culverts form a stable whole, the safety of the components of the composite box culvert during transportation is ensured, and the purpose of easy transportation and staggered assembly is achieved.

This utility model belongs to the field of stormwater culvert technology. It discloses an intelligent stormwater culvert for intercepting sewage, comprising a culvert body. A hydraulically operated, bottom-opening weir gate is installed near the center of the culvert body. The hydraulically operated, bottom-opening weir gate divides the culvert body into a first chamber and a second chamber from left to right. A floating baffle is installed inside the first chamber near the hydraulically operated, bottom-opening weir gate. This stormwater culvert has an intelligent diversion function. Compared to traditional interception wells, it not only intercepts sewage on sunny days but also automatically opens or closes the gate according to different conditions based on parameters measured by water quality analyzers, rain gauges, and level gauges, thus achieving intelligent sewage interception. This effectively and thoroughly separates rainwater and sewage. Utilizing the diversion well approach in a stormwater culvert can effectively intercept sewage in the culvert on sunny days, greatly reducing the frequency of combined rainwater and sewage overflows during rainy days. It can play a significant role in the treatment of black and odorous water bodies and the control of river water quality.

This utility model relates to the field of road engineering technology and discloses a frost heave and differential settlement control structure suitable for culvert sections in cold regions. The structure, from top to bottom, includes a roadbed, a fill matrix, a stepped aggregate layer, a stepped high-strength foamed concrete layer, and a culvert. A main drainage pipe is inclinedly arranged in the aggregate layer, and lateral drainage pipes are provided on both sides of the roadbed slopes to drain moisture from the roadbed. The high-strength foamed concrete layer is laid above and on both sides of the culvert, providing good thermal insulation to address freezing issues exacerbated by wind tunnel effects, and buffering the frost heave force of the surrounding soil to prevent direct frost heave force from causing compression damage to the culvert structure. This structure forms a multi-level stiffness transition from flexible to semi-rigid along the culvert transition section of the roadbed, reducing differential settlement and misalignment risks at the connection between the culvert and the roadbed, improving the overall stability of the roadbed and driving safety. The overall structure is reliable, easy to construct, and suitable for widespread application in cold regions.

This invention discloses a construction method for a municipal drainage culvert settling channel, comprising the following steps: S1, construction preparation, and setting a permeable layer, a biological filter layer, and a vegetation buffer zone at the bottom of the settling channel; S2, component prefabrication construction, with components adopting prefabricated reinforced concrete component structures; S3, subbase construction; S4, pipe body installation; S5, waterproofing and protective layer, filling the outside of the settlement joint with asphalt hemp fiber and the inside with cement mortar, combined with waterproof coating or roll material to form a composite waterproof layer; S6, backfilling and compaction, symmetrically compacting both sides of the culvert body with small machinery, each layer loosely laid to a thickness ≤20cm, and mechanically filling after reaching a height of 1m above the culvert top. The advantages of this invention are: It uses prefabricated pipe-type culvert components and high-precision steel molds, facilitating on-site construction management; and utilizes the flexibility of corrugated steel pipe culverts to pre-deform the culvert, ensuring that the culvert maintains its original shape after backfilling, avoiding the unfavorable situation of the culvert evolving from a circular culvert to a flat culvert or even collapsing.

The application relates to the culvert technical field, in particular to an assembled culvert section inner connecting structure, which comprises a culvert side wall and a concrete cushion layer, the concrete cushion layer is installed at the bottom of the culvert side wall, the inside of the culvert side wall is provided with a connecting mechanism, the connecting mechanism comprises a positioning unit and a splicing unit, the splicing unit is installed in the inside of the culvert side wall, and the positioning unit is installed in the inside of the culvert side wall. The assembled culvert section inner connecting structure realizes the positioning and placement of the culvert top wall and the side wall through the installation of the splicing unit, the rotation knob drives the threaded rod and the threaded hole to mesh and move downward, the linkage pressing rod pushes the fixed plate to move along the movable groove, then the connecting rod drives the moving plate and the clamping block to expand outward, the clamping block is inserted into the locking groove and is fixedly attached to the clamping block, the mechanical linkage reinforcement of the connection of the two is realized, and the firmness of the installation of the culvert side wall and the top wall is effectively improved.

This utility model provides a flood control bridge, including a base, a bridge body mounted on the base, and a bridge deck mounted on the bridge body. The bridge body includes multiple precast culverts arranged in a row and a concrete layer filling the spaces between the precast culverts. Each precast culvert includes a pipe body and multiple vertical plates spaced apart along the axial direction of the pipe body. Vertical plates are provided at both ends of the pipe body. The pipe bodies of any two adjacent precast culverts are parallel, and the vertical plates are aligned and adhered to each other. The concrete layer fills the space enclosed by the vertical plates. Plastic stone layers are provided on both sides of the bridge body and are bonded to the vertical plates at both ends of the pipe body. This utility model solves the technical problems of poor overall structural integrity, easy deformation and cracking, and susceptibility to flood damage in existing flood control bridges. It improves the structural stability and erosion resistance of flood control bridges, and is convenient to construct and highly reliable.

The application provides a box culvert assembling device, the inner side of the box culvert is provided with a working culvert and a through hole, the working culvert is communicated with a pipe piece through the through hole, and the box culvert assembling device comprises: a supporting mechanism comprising a supporting seat and a lifting column, the supporting seat is suitable for being supported on the pipe piece, the lifting column is arranged on the supporting seat in a lifting mode, and the lifting column passes through the through hole to extend into the working culvert; a translation mechanism comprising a plurality of translation seats, the plurality of translation seats are configured to make a translation movement in different directions relative to the supporting mechanism; a grabbing mechanism, the grabbing mechanism is movably connected with a translation seat with the highest degree of freedom among the plurality of translation seats; and a deflection mechanism comprising a plurality of deflection oil cylinders, the plurality of deflection oil cylinders are respectively connected with the grabbing mechanism and the translation seat with the highest degree of freedom, and the plurality of deflection oil cylinders are configured to respectively drive the grabbing mechanism to swing at different angles. According to the box culvert assembling device, the assembling precision and efficiency of the box culvert can be improved.