405 results about "Anchor bolt" patented technology

The application discloses a soil-rock dam reinforcing and enhancing structure for preventing over-standard overflow dam break and a construction method thereof. The structure comprises a soil-rock dam filling body, a vertical anti-seepage core wall arranged in the soil-rock dam filling body, and a composite high-strength fiber three-dimensional membrane arranged on the surface of the dam slope after regulation. The membrane body is unfolded along the slope surface and is reinforced by a pressing plate type fixing anchor bolt and a fiber membrane three-dimensional rivet. The row-to-row spacing of the fixing anchor bolt is 20-50 cm, so that the composite membrane is tightly attached to the dam body. The rigid structure and the flexible protection material are organically combined, the dam body's erosion resistance and durability are significantly improved while the flood discharge capacity is ensured, the construction method is simple, the cost is low, and the method is suitable for flood control reinforcement and safe operation of various soil-rock dams.

This utility model discloses a novel anchor bolt suitable for layered soft rock tunnels with different large deformation levels, relating to the field of soft rock tunnel support technology. It includes a first rod body, a second rod body, and an extension mechanism. The extension mechanism is disposed between the second rod body and the first rod body. The end of the first rod body is connected to an end cap, and a pad is disposed between the end cap and the first rod body. This utility model employs the aforementioned novel anchor bolt suitable for layered soft rock tunnels with different large deformation levels. The arrangement of the first and second rod bodies enhances the stability of the anchor bolt, resulting in more stable bonding anchoring force and higher pull-out resistance compared to simple metal anchor bolts, while also adapting to complex working conditions. The extension mechanism addresses the issue of easy deformation in soft rock, better utilizing the anchor bolt's support function. The material of the second rod body provides excellent adhesion and corrosion resistance, forming a high-strength anchoring interface, and its connection with the extension device enhances the stability of the device.

This utility model relates to the field of building auxiliary materials, and in particular to an anchor bolt for fixing the thermal insulation layer of existing building exterior walls. It includes an anchor plate, an anchor bolt sleeve, a mixing body, an auxiliary nail core, and a sleeve head. The anchor bolt sleeve is provided with multiple barbs. The sleeve head includes a solvent chamber and a spraying part coaxially connected. The solvent chamber contains two cavities separated by multiple PVE elastic films, each containing an epoxy resin base and an epoxy resin curing agent. The auxiliary nail core drives the mixing body to rotate, ensuring thorough mixing of the epoxy resin base and curing agent. The mixed epoxy resin flows out through the spraying part, filling the gap between the anchor bolt and the wall. After the epoxy resin cures, the anchor bolt and the wall become integrated, achieving the effect of fixing the thermal insulation board.

The application discloses a pre-buried construction method of chimney foundation bolts. The double-row circumferentially distributed foundation bolts can be relatively close to each other by using a positioning tool, and can be pulled again by a pulling device to correct the position in the semicircular groove, so that the double-row circumferentially distributed foundation bolts correspond to the bolt holes of the double-row flange plate, the double-row bolt holes on the flange plate are synchronously penetrated by multiple double-row foundation bolts, and the problem that manual hammering of single foundation bolts to penetrate the double-row holes of the flange plate cannot realize the synchronous penetration of multiple double-row foundation bolts to butt joint the double-row holes of the flange plate is solved.

The utility model discloses a kind of concrete and steel mixed structure sealing silo, belong to building construction technical field, including the silo wall and steel structure storehouse top poured by concrete, steel structure storehouse top is set in the top of silo wall, and concrete is poured at the connecting place of steel structure storehouse top and silo wall, forms sealed storehouse body, ring beam is equipped in the top of silo wall and first installation slot being set on the top side wall of silo wall, steel structure storehouse top includes main beam and lap joint, lap joint is set in the end of main beam, first installation hole is equipped on the bottom surface of lap joint, anchor bolt assembly is pre-buried in first installation slot, anchor bolt assembly includes anchor rod, backing plate and fastener, one end of anchor rod is pre-buried into silo wall, the other end is exposed, backing plate is sleeved on the exposed part of anchor rod, and backing plate is set on the bottom surface of first installation slot, lap joint is installed into first installation slot, by staggering concrete pouring gap and the gap of main beam and first installation slot, the sealing of silo is improved.

The application discloses an assembled superconducting maglev track structure and a construction method thereof, and belongs to the technical field of superconducting maglev tracks. The assembled superconducting maglev track structure comprises two inverted T-shaped tracks and a connecting frame, a plurality of interval arranged adjusting holes are arranged on each inverted T-shaped track, each adjusting hole is communicated with a first wire groove or a second wire groove, a first anchoring bolt is inserted in each adjusting hole, and a suspension guide coil or a traction coil is fixed at one end of the corresponding first anchoring bolt. Two interval arranged wheel running surfaces are formed at the top of the connecting frame, the connecting frame is located between the two inverted T-shaped tracks, and the two ends of the connecting frame are connected with the corresponding inverted T-shaped tracks through post-poured belts. The assembled superconducting maglev track structure provided in the application can not only reduce concrete pouring at a construction site, but also quickly and accurately fix the suspension guide coil or the traction coil, so that the construction efficiency is improved.

This invention relates to the field of coal mining technology and discloses a method, equipment, and medium for coordinated pressure relief and support of closely spaced coal seams. The method includes: constructing pressure relief holes in the roof and floor of the roadway to obtain roof fracturing holes and floor fracturing holes, respectively; constructing variable-diameter pressure relief holes in the roadway using a pre-constructed variable-diameter pressure relief drill bit for the sidewall coal seam to obtain sidewall variable-diameter pressure relief holes; depressurizing the roadway based on the roof fracturing holes, floor fracturing holes, and sidewall variable-diameter pressure relief holes; and installing anchor bolts and grouting in the roof fracturing holes, floor fracturing holes, and sidewall variable-diameter pressure relief holes after pressure relief is completed to achieve full-section anchor grouting support. This invention can transform the pressure relief channel into a strong support structure, organically combining the pressure relief zone with the reinforced support zone to form an integrated and coordinated pressure relief and support system for coal mining.

The application discloses a self-cutting mechanical anchor bolt blade brazing device, which comprises a high-frequency brazing device and a welding wire feeder arranged on a fixed base, a vertical positioning support arranged in the center of the base, and an annular groove arranged around the bottom of the positioning support on the surface of the base; a positioning disc is fixed in the annular groove; a manipulator is arranged on the base; a plurality of anchor bolt positioning strips with convex structures are symmetrically arranged on the surface of the positioning disc and correspond to vertical seams of the anchor bolt; and a plurality of blade holes penetrating through the positioning chuck correspond to the blade grooves of the anchor bolt; the base is provided with a plurality of blade channels in communication with the bottom of the blade holes of the positioning chuck and used for conveying the blades, each blade channel is provided with a conveying rail and a conveying wheel and is connected with a vibrating screen disc for blade arrangement and feeding, so that the blades are automatically conveyed to the blade grooves of the anchor bolt. The brazing device has good stability and high efficiency and can realize accurate and high-quality automatic brazing of the self-cutting mechanical anchor bolt blade.

The utility model discloses a kind of silicon plate anchor bolts for fixing external wall heat insulation plate, belong to building external wall heat preservation technical field, it includes auxiliary sleeve, the both ends of auxiliary sleeve are respectively provided with limit ring piece and guide rod;The silicon plate anchor bolt for fixing external wall heat insulation plate, when auxiliary sleeve is inserted into hole groove, the transmission block close to the outer layer of auxiliary sleeve, is affected by resistance, it will shrink into movable groove, then make bolt rod piece is inserted into installation groove, and bolt rod piece is connected on auxiliary sleeve by the cooperation of screw, the arc surface of bolt rod piece bottom extrudes the transmission block close to the inner layer of auxiliary sleeve, so that connecting block drives anti-falling block to move horizontally, simultaneously, the transmission block close to the outer layer of auxiliary sleeve is cooperated by connecting block, it will be inserted into the wall of hole groove, therefore, by the cooperation of positioning device, the loosening of auxiliary sleeve is effectively avoided, the stability of the silicon plate anchor bolt is greatly improved.

A drop hammer impact testing device for anchor bolts or anchor cables includes a lifting mechanism, a main frame, a hammer-grabbing device, a guide structure, a connecting structure, an impact force transmission mechanism, a hammer body, and a lifting rod. The main frame has a top plate at its top and a bottom plate at its bottom. The guide structure is located within the main frame, and the lifting mechanism is located on the upper surface of the top plate. The output end of the lifting mechanism is connected to the hammer-grabbing device, and the hammer body is located at the bottom of the hammer-grabbing device. Both the hammer-grabbing device and the hammer body are slidably fitted with the guide structure. This drop hammer impact testing device for anchor bolts or anchor cables solves the problem that the testing of anchor bolt or anchor cable support materials in related technologies focuses on static load testing, resulting in a lack of means to test the quality of anchor bolt or anchor cable support materials under impact loads.

This invention discloses a method for coordinated unloading-support-filling roadway protection in a longwall mining face of a steeply inclined coal seam. The method includes: arranging pre-reinforcing anchor bolts and cables at certain intervals in the transport roadway to reinforce the transport roadway in advance; pre-excavating a gap in the upper side of the transport roadway by blasting, and adding reinforcing anchor bolts and cables to the cross-section of the pre-excavated gap; arranging pressure-relief boreholes at certain intervals in the center of the coal seam roof at the pre-excavated gap, and implementing pressure-relief blasting after the support is moved; using I-beams and retractable modular roadway protection supports as the first and second layers of rock-blocking support, respectively; filling and sealing the goaf area above and on the sides of the retractable modular roadway protection supports with local filling materials; and arranging single hydraulic props for delayed support at a certain distance from the coal wall of the lagging face inside the roadway along the goaf. This method provides good support, significantly increases the speed of roadway retention in a longwall mining face of a steeply inclined coal seam, and effectively ensures safe and normal production.

The invention discloses a soft rock large deformation control method and a rapid support system suitable for TBM tunnel construction method characteristics, the method is implemented based on an anchoring support system composed of a short anchoring support system and a long anchoring support system, and the method is suitable for an open TBM construction scene: in a TBM tunneling process, before a shield is exposed, the shield is not exposed, and the long anchoring support system is not exposed; a short anchoring support system of a full-length anchoring anchor rod structure is timely arranged in the radial direction of the 180-degree area of the upper half ring of the tunnel section through a cutter head edge cutter hole, and the short anchoring support system and a shield cooperate to form an initial deformation control system; after the shield is exposed, according to the deformation degree of the surrounding rock, full-length anchoring anchor rods or pre-stressed anchor cables are adopted in a graded mode, long anchoring supporting systems are arranged at intervals with the short anchoring supporting systems in a spiral mode, then the long anchoring supporting systems are cooperatively borne with steel arches, reinforcing meshes and sprayed concrete, and the long anchoring supporting systems are matched with 70m system sprayed concrete and 1000m secondary lining construction behind a tunnel face. According to the method, the displacement around the hole is effectively controlled, the TBM is prevented from being stuck, and the construction safety and efficiency of the open-type TBM in the soft rock large-deformation geology are improved.

The application discloses a method for repairing large-area broken secondary grouting layer of a fan foundation, belongs to the technical field of foundation reinforcement of wind turbine generators, and aims at solving the problems of long repair period, high repair cost and repeated diseases after repair of the large-area broken secondary grouting layer of the fan. After the secondary grouting layer of the area to be repaired is removed, the roughened part of the foundation platform for laying the grouting material is leveled, a steel beam section is horizontally embedded between the foundation platform and the upper annular anchor plate, the embedded steel beam section is anchored on the foundation platform through prestressed anchor rods, the symmetric installation mode is adopted, the remaining steel beam sections are repeatedly embedded, and the steel beam sections form a closed annular steel beam until the annular steel beam is formed. A waterproof rubber strip is arranged between the top of the annular steel beam and the upper annular anchor plate, post-poured grouting material is poured in the annular steel beam, and curing is performed until the design strength is reached, and the fan anchor bolt group is pre-tightened. The method can repair the broken secondary grouting layer without removing the fan, and greatly shortens the repair period.

The utility model relates to a kind of charging pile installation base, belong to charging pile technical field, including cement pedestal, multiple square tubes of first and last splicing are installed on cement pedestal, the splicing of adjacent square tube is equipped with outlet hole one, detachable end clamping plate is installed on the outer end of square tube at both ends, the splicing of adjacent square tube is equipped with U-shaped fastener, U-shaped fastener bottom both sides are fixed with flanging, flanging is installed on cement pedestal by anchor bolt, outlet hole two is set in the center of U-shaped fastener. Line is routed inside square tube, avoid wind and sunshine, line trend is clear, avoid the problem of winding, and the very long base is designed as multiple shorter square tubes splicing, fixed using U-shaped fastener, the installation operation of overall charging pile is convenient, also convenient for transfer, storage, while also avoid line wind and sunshine and the erosion of rainwater.

This invention relates to the fields of computational mechanics and rock engineering, and particularly to a numerical simulation method for end-anchored rock mass engineering based on DDDA (Digital Directed Amplification and Analysis). The method includes: constructing a circular element discontinuous deformation analysis numerical model according to actual engineering conditions; performing discontinuous deformation analysis numerical calculations; analyzing the calculation results of the unanchored model to preliminarily determine the anchoring scheme; performing discontinuous deformation analysis numerical calculations again; determining whether the model contains unstable blocks, adjusting the anchoring scheme, and repeating the aforementioned steps until the model stabilizes, thus completing the design of the rock mass engineering anchoring scheme. This invention establishes a numerical simulation method capable of accurately simulating the interaction between anchor bolts (anchor cables) and rock mass, and integrating anchoring scheme design, stability assessment, and dynamic parameter optimization functions. It achieves accurate prediction of the deformation and failure behavior of anchored rock mass and optimizes anchoring design, featuring high simulation accuracy and strong practicality.

This utility model discloses a tunnel support structure, belonging to the field of tunnel support technology. It includes a support frame, with a concrete layer filling the space between the support frame and the tunnel wall. The support frame comprises multiple arc-shaped top plates connected by bolts, with L-shaped support plates bolted to both ends of each arc-shaped top plate. Multiple anchor bolts fixed to the tunnel are installed on the support plates, and a bottom plate is bolted between two support plates. This utility model, through the support frame and concrete layer, ensures sufficient support strength by using a precast support frame made of steel reinforcement and concrete. The concrete layer fills the gap between the support frame and the tunnel wall, preventing collapse. The support frame is assembled from multiple arc-shaped top plates, support plates, and a bottom plate, facilitating transportation and installation. All arc-shaped top plates, support plates, and bottom plates are precast, ensuring uniform quality and stable structural strength. The anchor bolts further enhance the stability of the support frame.

This utility model discloses a safety performance testing chamber for mining electromechanical equipment, including a chamber body, an explosion-proof door, an observation window, a top sealing mechanism, an intermediate sealing partition, a foundation, and pipeline interfaces. The chamber body is a rectangular steel structure, using a composite design of steel plates and grid-shaped reinforcing ribs, and is made of carbon steel and stainless steel composite materials, making it vibration-resistant and explosion-proof. The intermediate sealing partition is removable, dividing the chamber body into two small compartments or forming a complete large chamber, flexibly adapting to the testing of small or large diesel engines. The top sealing mechanism uses a U-shaped groove and a venting membrane seal, allowing for rapid pressure relief in the event of an explosion. The side walls are equipped with a rotating explosion-proof door and a high-temperature tempered glass observation window for easy entry, exit, and observation. The foundation is fixed with anchor bolts, and the interior and exterior of the chamber are coated with antistatic, flame-retardant, and rust-proof paint. This utility model can withstand the impact of a methane-air or methane-hydrogen-air mixture explosion, ensuring safety; it is suitable for verifying the safety performance of diesel engines in underground coal mines, and has the advantages of high efficiency, safety, and economy.

This invention discloses a dry construction method for ultra-high ALC wall panels based on a steel frame seismic structure, belonging to the field of building construction technology. The method includes the following steps: First, BIM modeling: A LOD400 precision model is established based on BIM technology. The ALC panels, steel frame, pre-reserved openings for doors and windows, and wall penetrations for electromechanical pipelines are collaboratively and meticulously designed to form an ALC panel steel frame system. Through post-installed connectors and anchoring to the main structure, the ALC wall panels are transformed from a planar stress-bearing mode to a frame-wall panel collaborative stress-bearing spatial mode. Anchor bolt holes reserve buffer space to form a seismic structure, effectively solving the problems of insufficient stiffness and easy deformation and cracking of ultra-high walls. The steel frame installation follows a column-first, beam-later sequence, and a detachable temporary bracket support device is used to achieve precise control of the steel beam elevation. A winch and a scissor lift work together, improving construction efficiency compared to traditional concrete formwork pouring. Weld flaw detection and anti-corrosion coating form a complete quality closed loop, ensuring the long-term durability of the steel frame.

The utility model belongs to the technical field of anchor bolt mounting piece, especially a kind of anchor bolt mounting piece, including bolt and fixed sleeve, the lateral wall of bolt is provided with fixed sleeve, the top of bolt is provided with fixed assembly, the fixed assembly is provided with limit component, the fixed assembly includes fixed shell, the bottom surface of fixed shell is rotatably connected with rotating disc, the bottom surface of rotating disc is fixedly connected with limit shaft, the bottom of rotating disc is provided with backing pad, the lateral wall of fixed sleeve is rotatably connected with limit plate, limit hole is arranged in the backing pad and limit plate, installation groove is arranged in the fixed shell, fixed rubber is arranged in the inside of installation groove.The anchor bolt mounting piece, by setting limit shaft and limit hole, it is convenient to limit fixing for fixed shell, i.

This invention discloses a fully automatic drilling multi-way valve system for a hydraulic anchor bolt drilling rig, relating to the field of coal mining technology. It includes: an automatic feed directional valve, a motor rotation directional valve, a water spray directional valve, a first directional valve, a second directional valve, and a detection and switching unit that controls the second directional valve to switch direction when the feed cylinder reaches its endpoint. A pilot control oil circuit connects to the start-side hydraulic control ports of the automatic feed directional valve, the motor rotation directional valve, and the water spray directional valve via the second and first directional valves, respectively. Port B of the second directional valve is connected to the return-side hydraulic control port of the automatic feed directional valve. The rodless chamber oil inlet of the feed cylinder is connected to the hydraulic control port of the first directional valve, and port A of the first directional valve is connected to the return oil circuit. In this invention, automatic drilling, drilling water spraying, and automatic return to a stop state to wait for the next automatic drilling process can be achieved by pushing the push rod of the automatic feed directional valve, reducing labor intensity and improving safety, construction efficiency, and construction quality.

To propose a construction method for earthquake-resistant flexible joints and a method for repairing concrete members that can save materials and reduce working time. [Solution] The construction method S100 for seismic-resistant flexible joints includes: a deterioration confirmation step S3 in which deteriorated parts are confirmed by tapping the concrete areas along both sides of the joint between concrete members; a filler filling step S5 in which a photocurable filler 26 is filled into the recess where the concrete of the deteriorated part has been removed and made flat; a light irradiation step S6 in which the photocurable filler is cured by irradiating it with light of a wavelength that hardens the flattened photocurable filler; and an expansion member fixing step SA in which an expansion member 21 that covers the joint is fixed via anchor bolts 23, wherein the expansion member is fixed in a state in which part or all of it is in contact with the surface of the photocurable filler.

The utility model relates to power distribution cabinet base adjusting technical field discloses power distribution cabinet anchor bolt self -adaptation leveling base, including power distribution cabinet main part, the bottom fixedly connected with base of power distribution cabinet main part, the top all screw thread connection of base four arounds has screw cap, the bottom screw thread connection of screw cap has stud, the inside front and back sides of base are provided with recess, the inside left and right sides of base are provided with recess, the left and right sides and the front and back sides of the outside of base all pivotally connect with limit round block, the left side fixedly connected with the plug -in column of limit round block. In the utility model, the threaded adjusting type leveling foot is increased around the base, the power distribution cabinet body is installed with the level meter and can detect whether the power distribution cabinet is in the horizontal state, when the power distribution cabinet is in the non -horizontal state, can adjust each leveling foot once, this design structure is simple, can easily adjust the power distribution cabinet base, simple operation, and the cost is lower, and the maintenance is convenient.

This application discloses a prefabricated anchor bolt and support frame connector for rapid detection of locking force, relating to the technical field of engineering support connection structures. It includes an outer frame fixed to the support frame, two clamping plates slidably disposed within the outer frame for clamping the anchor bolt, and a locking module disposed on the outer frame for pressing the two clamping plates against the anchor bolt. The locking module is equipped with a deformation unit for feedback of the clamping force of the corresponding clamping plates against the anchor bolt, and the deformation unit has a specific deformation force value. This application transforms the complex force problem into a simple shape observation problem, reducing reliance on worker skills, ensuring a single operating standard, and guaranteeing uniform and compliant locking force for each anchor bolt.

This invention discloses a stiffness-adjustable active-passive coordinated load control structure for ultra-high embankment tunnels, relating to the field of tunnel support structure technology. To address the problem of existing high-embankment buried tunnels where structural stiffness cannot be adjusted and it is difficult to actively guide and disperse embankment pressure under embankment heights exceeding 80 meters, the following technical solution is proposed: It includes corrugated steel plates, anchor bolts, granular filler material, and a metal mesh. The corrugated steel plates are circumferentially assembled to form the innermost layer of the tunnel support; the granular filler material, wrapped in the metal mesh, is placed around the outside of the corrugated steel plates; the anchor bolts penetrate the granular filler material, the metal mesh, and the corrugated steel plates. This invention achieves active control of structural stiffness by adjusting the overlap length of the corrugated steel plates through the sliding adjustment of the anchor bolts within the elongated bolt holes. Simultaneously, the flexible enclosure formed by the granular filler material and the metal mesh can guide and disperse the pressure of the overlying embankment.

The invention discloses a glass fiber friction anchor bolt, which comprises a bolt body and a backing plate; the bolt body comprises a hollow pipe body made of glass fiber reinforced plastic, and an external thread is arranged on the outer surface of the bolt body; the head of the bolt body gradually shrinks to form a conical transition section, a protective sleeve is sleeved at the end of the transition section, and the backing plate is sleeved at the tail of the bolt body and is rotationally connected with the bolt body through the thread; the backing plate is circular, one side of the backing plate close to the head of the bolt body is flat, and the other side of the backing plate extends to the tail of the bolt body to form a strengthening ring; connecting convex ribs are arranged between the strengthening ring and the surface of the backing plate, the strengthening ring is cone-shaped, the larger end of the strengthening ring is fixedly connected with the backing plate, and the smaller end of the strengthening ring is connected with an adjusting nut; the adjusting nut is sleeved on the bolt body and is rotationally connected with the bolt body through the thread. The invention realizes the purposes of one-time installation and permanent support, greatly reduces the maintenance cost and ensures the project safety. 8 20 25 20 00 42 03 J an 2 02 5 A B S T R A C T 2 0 2 5 2 0 0 0 4 2 0 3 J a n 2 0 2 5 1 / 5 Fig. 1 1 / 5 2 7 3 4 1 Fig. 1 20 25 20 00 42 03 J an 2 02 5 2 0 2 5 2 0 0 0 4 2 0 3 J a n 2 0 2 5

The application discloses a kind of steel pipe confined reinforced concrete column anti-void construction system and its use method, comprising: expansion connecting anchor bolt assembly, the expansion connecting anchor bolt assembly includes anchor bolt part and nut part;The anchor bolt part includes anchor bolt rod, is set to the expansion claw for being supported and positioned by back tension expansion outside the rear end of the anchor bolt rod, is set to the internal thread hole in the rear end of the anchor bolt rod;The nut part includes connecting section, is set to the connecting screw rod for being threadedly connected with the internal thread hole at the front end of connecting section, is set to the nut at the rear end of connecting section;Hoop assembly;Through fixed anchor rod is fixed on the steel pipe wall at hoop face, subsequent pouring concrete can be effectively connected with preset anchor rod, ensure that anchor rod can effectively back tension to steel pipe wall after hoop device is subsequently removed, effectively solve the technical problem of concrete column void.

The application discloses a widening method of an existing concrete box girder bridge, which comprises the following steps: firstly, a plurality of groups of anchor holes are punched on the outer side surface of the side web plate of the existing box girder and the outer edge bottom surface of the wing plate; a web plate anchor bolt is implanted in each anchor hole on the side web plate; a wing plate anchor bolt is implanted in each anchor hole on the outer edge bottom surface of the wing plate; a special-shaped steel plate is prefabricated, the special-shaped steel plate comprises a first section which is attached to the outer side surface of the side web plate, a second section which is attached to the bottom surface of the wing plate and a third section which horizontally extends from the end of the second section; the special-shaped steel plate is attached to the outer side surface of the existing box girder and is fixed on the existing box girder through a plurality of groups of web plate connecting nuts and a plurality of groups of wing plate connecting nuts; a plurality of ribbed steel plates are welded on the bottom surface of the special-shaped steel plate, and a template steel plate is welded at the end of the third section of the special-shaped steel plate, the template steel plate and the third section of the special-shaped steel plate form a pouring mold plate; and a concrete leveling layer is poured in the pouring mold plate. The application is convenient to construct and has little influence on the existing bridge.

The present invention provides a support base structure that enables the maintenance of a facility in its correct position by generating rotational resistance even when rotational force is applied to the support due to wind pressure acting on the facility suspended from the support. According to a suitable embodiment of the present invention, the support base structure comprises a foundation block made of precast concrete, a support with its lower end inserted into the foundation block to a certain depth, and a fixing clamp that is fastened to an anchor bolt embedded in the foundation block and exerts a clamping force on the support. In this structure, a plurality of fixing keys for preventing rotation of the support are installed in a circular arrangement at the lower end of the support, and a support coupling hole is formed in the foundation block, which has a circular cross-section larger than the cross-section of the lower end of the support and is recessed to a certain depth from the upper surface, so that the lower end of the support is inserted to a certain depth, wherein a plurality of mortar-filling grooves for key coupling are formed in a circular arrangement with a certain depth on the inner surface of the support coupling hole. The above-mentioned support is characterized by the fact that a filling material is injected around the lower portion of the support and filled into a mortar filling groove for key coupling, and at the same time, a fixing key coupling groove is formed between the lower portion of the support and the inner surface of the support coupling hole to be coupled with a fixing key for preventing rotation of the support, and a cylindrical ring for preventing rotation is formed to have a filling groove coupling key filled in the mortar filling groove for key coupling.

This utility model provides a positioning and correction device for steel casings with jacks, belonging to the field of building construction technology. The device includes a base, a support frame, an adjustment mechanism, and a correction mechanism. The base is a rectangular steel plate structure with anchor bolt holes at all four corners. The support frame is fixedly installed on the upper surface of the base and consists of four columns and a crossbeam. The four columns are rectangularly distributed and fixed to the base by welding, while the crossbeam is fixed to the middle of the columns. The adjustment mechanism includes four sets of jack components. Each jack component includes a jack body, a connecting seat, and an adjusting screw. The jack body is fixed to the crossbeam via the connecting seat, and one end of the adjusting screw is fixedly connected to the jack piston rod. This utility model can solve the problem that existing steel casings cannot be corrected in a timely manner after tilting.