122 results about "Cross river" patented technology

The invention discloses a vertical inclined flood control irrigation barrage and a construction method thereof. The barrage comprises a river channel base, dam walls are fixed to the two sides of the river channel base, a water passing river channel is formed between the river channel base and the dam walls on the two sides, and a plurality of positioning hooks are arranged on the river channel base; a plurality of anchoring parts are fixed on the anchoring table; the movable water baffle is connected to the water passing river channel in an overturning mode, a water inlet is formed in the upstream, corresponding to the movable water baffle, of the dam wall, a diversion canal connected with a farmland is arranged on the outer side of the dam wall, and water flow in the water passing river channel is guided into the diversion canal through the water inlet. The multiple water baffle overturning stay wires are fixed to the downstream face of the movable water baffle at intervals in the vertical direction, and the water baffle overturning stay wires penetrate through the threading pipes on the dam wall and then are connected with the anchoring parts at the corresponding ends. When the river water flow is small, the movable water baffle is lifted, and when flood comes, the movable water baffle needs to be released in time to be flush with the river bottom platform, so that the flood passes through smoothly. And after the flood ebbs, the water baffle is lifted to continuously irrigate the field for citizens.

The invention relates to the technical field of bridge construction, and discloses a seasonal water level coping device in river-crossing bridge lower foundation construction, which comprises a pier and an overwater bearing platform on one side of the pier, the side of the overwater bearing platform close to the pier is fixedly connected to the pier, and the side of the overwater bearing platform away from the pier is provided with a river pier platform. The overwater bearing platform is located in the center of the river abutment and fixedly connected with the river abutment, a water seepage grid is arranged on the side, close to the river abutment, of the overwater bearing platform, and a buffering supporting plate is arranged on the side, perpendicular to the river abutment, of the overwater bearing platform. In order to prevent the bridge pier structure from being not completely solidified and limited and reduce water flow impact on the two sides, buffer structures can be built on the two sides of the bottom of the pier abutment, and the buffer supporting plate shakes back and forth through the buffer assembly on one side along with seasonal tide water flow velocity change in a river, so that impact on the bottom of the bridge pier is reduced; and therefore, the overall buffering prevention effect of the device is improved.

The present application relates to a method for installing a river-crossing steel truss bridge, which relates to the field of bridge construction and aims to solve the problem of low installation efficiency of steel truss bridges. The method comprises the following steps: constructing piles in the middle of a river channel, transporting steel truss bridges from both sides of the river channel to the piles, and providing a calibration mechanism at the top of the piles for accurately docking two sets of steel truss bridges; step two: constructing a scaffolding on both sides of the river channel, with a detachable conveying mechanism provided on the scaffolding, and transporting the steel truss bridges via the conveying mechanism; step three: hoisting the steel truss bridge via a hoisting machine, so that the steel truss bridge is placed on the conveying mechanism; step four: accurately docking the two sets of steel truss bridges on the piles via the calibration mechanism. After the steel truss bridge is installed, the conveying mechanism is disassembled and the steel truss bridge is fixed. The present application has the effect of making the steel truss bridge more stable during installation, thereby improving installation efficiency.

The present application relates to the technical field of shield construction, and discloses a kind of anti-seepage reinforcement device for shield under-crossing river, including anti-seepage wall, two groups of reinforcing tubes are arranged on the anti-seepage wall, tunnel is located between the intersection of reinforcing tube, grouting anchor rod is evenly arranged on the upper ring surface of tunnel inner wall, a plurality of let holes are arranged on the reinforcing tube, part of grouting anchor rod passes through from the let hole, a plurality of through holes are arranged on the reinforcing tube, and grouting is carried out in the reinforcing tube and grouting anchor rod simultaneously.The beneficial effects of the present application are as follows: the reinforcing tube and grouting anchor rod play the role of reinforcing bar inside the geological layer, after grouting is completed, grouting anchor rod forms a whole with reinforcing tube under the action of slurry, and reinforcing tube is fixed with anti-seepage wall, so even in the later tunnel use process, surrounding geology moves under the action of natural factors and human factors, the geology between tunnel and river is also difficult to deform under the reinforcement of concrete slurry, reinforcing tube, grouting anchor rod and anti-seepage wall.

The utility model provides a prefabricated contour box girder of a deep river-crossing bridge, relates to the technical field of bridge building, and solves the problem that the construction period is too long due to the fact that cast-in-place needs to wait for concrete forming and curing in sequence when the box girder of the river-crossing bridge is built. An upper main beam is arranged above the lower main beams, opposite pull rods are arranged between the lower main beams and the upper main beam, the top of the upper main beam is connected with a top plate cross frame, a placing block is arranged at the bottom of the opposite side of the lower main beams, a cast-in-place bottom plate is connected between the lower main beams through the placing block, a correction assembly is arranged at the attaching position of the placing block and the cast-in-place bottom plate, and the correction assembly slides along an inclined plane. A plurality of box girder contours formed by the prefabricated lower girders and the upper girders in the device can be constructed at the same time, then concrete pouring and filling are conducted on the contours at the same time, it is not needed to wait for cast-in-situ completion of the box girders in sequence when a bridge is constructed, and the construction period is shortened.

The application is a kind of connecting structure of existing river-crossing bridge and newly-built dike and its construction method, which comprises an existing road, a connecting structure section and an existing river-crossing bridge; the connecting structure section comprises a sand-gravel roadbed layer, a graded broken stone base layer laid on the sand-gravel roadbed layer and a cement concrete pavement layer cast on the graded broken stone base layer; the cement concrete pavement layer is composed of a rising slope section, a straight section and a descending slope section, the rising slope section is connected with the existing river-crossing bridge at its starting point and the descending slope section is connected with the existing road at its ending point; retaining walls are arranged on both sides of the connecting structure section. Compared with the prior art, the application avoids removing and rebuilding the existing river-crossing bridge for water blocking, reduces the engineering investment, saves the investment by using the sand-gravel material excavated from the river for filling the roadbed layer, has simple structure, is convenient for construction, is easy to obtain materials and has low cost, and meets the road traffic requirements.

The invention discloses a male pipe combined construction steel truss girder bridge, and relates to the field of steel truss girder bridges, the male pipe combined construction steel truss girder bridge comprises a bridge deck slab and a cross beam arranged below the bridge deck slab, a plurality of web members are arranged between the cross beam and the bridge deck slab, the web members are located on the two sides of the cross beam, and the web members, the bridge deck slab and the cross beam jointly define a pipeline space used for containing a plurality of pipelines; wherein the pipeline space comprises a first pipeline space body and a second pipeline space body which are arranged in the bridge direction of the steel truss girder bridge, the first pipeline space body is located above the second pipeline space body, and a pipeline support used for containing pipelines is arranged between the first pipeline space body and the second pipeline space body. Multifunctional combined construction of the road and the pipeline is achieved, various traffic and municipal demands under the condition of river crossing, river crossing and other channel resource shortage conditions are met, the public pipe combined construction design can reduce the cost and resource occupation of independent construction of a pipeline bridge, meanwhile, the pipeline and the road are integrated in the same bridge structure, and the construction cost is reduced. And unified maintenance and management are facilitated.

The utility model discloses a river-crossing pipeline structure which comprises a foundation, two buttresses are poured on the foundation, the two buttresses are arranged on two banks of a river channel, and a pipeline main body structure is fixedly connected between the two buttresses. According to the river-crossing pipeline structure, the rigidity and the stability of the river-crossing pipeline are improved, the application range of the river-crossing pipeline is expanded, the overall sectional area of the structure is increased by utilizing the strength of the river-crossing steel pipe and adding the reinforced profile steel at the bottom, the structural stress in the middle of a large bending moment is reduced, and therefore when the span is large, the rigidity and the stability of the river-crossing pipeline are improved. Structures such as pipe bridges and trusses can be prevented from being used, the steel pipe can still be used for directly crossing the river channel, the application range of the river-crossing pipe bridge is widened, and remarkable economic benefits are achieved.

The disclosure provides a cross-river water diversion structure for collecting tail water and abandoned water downstream of a hydropower station, belonging to the technical field of hydraulic engineering. The water diversion structure comprises a water release gate, a drop well, a river-crossing box culvert, a tail water guiding assembly and an abandoned water guiding assembly. The water release gate is arranged in the tail water channel of the upper hydropower station and is used to cut off the tail water of the tail water channel of the upper hydropower station. The tail water guiding assembly is connected with the tail water channel of the upper hydropower station and is used to introduce the tail water cut off by the water release gate into the drop well. The abandoned water guiding assembly is connected with the stilling basin of the flood discharge tunnel of the upper hydropower station and is used to introduce the abandoned water of the stilling basin of the flood discharge tunnel of the upper hydropower station into the drop well. The drop well has a water outlet, and the river-crossing box culvert is connected to the water outlet and is located below the river channel and is used to introduce the water in the drop well into the water diversion system. The water diversion structure has the effects of improving the flood discharge safety of the upper hydropower station, reducing the disturbance to the ecological environment and reducing the construction cost.

The application discloses a cross-water bridge parameter inversion method and system based on generalized compact polarization SAR total power intensity peak value, and belongs to the technical field of synthetic aperture radar remote sensing, and solves the problems of low system efficiency, non-movable discriminator, non-uniform GCP mode discriminators and precision affected by pixel deviation of the prior art. The application obtains or synthesizes a received scattering vector; total power is calculated pixel by pixel based on the received scattering vector, a filter is used for multi-view processing, a smoothed total power map is obtained, the smoothed total power profile in the distance direction is obtained by averaging in the azimuth direction within the azimuth direction interval covered by the determined bridge main span, three local maximum peak values satisfying preset conditions are identified by using a peak value detection method; and the geometric parameters of the bridge are inverted based on the pixel positions of the local maximum peak values and combined with imaging geometric parameter inversion. The application is used for the safety monitoring and quantitative inversion of geometric parameters of cross-sea and cross-river bridge infrastructure.

The present application relates to a kind of wire river crossing stringing construction methods, comprising the following steps: completing the water in the tower assembly work, and the tower is hung with pay-off pulley assembly;Through unmanned aerial vehicle, guide rope is laid out, first steel wire rope is pulled to the opposite bank of river by guide rope, and both ends of first steel wire rope are anchored to ground by anchoring rope;Lay out wire, first use unmanned aerial vehicle to lay out guide rope, guide rope is connected together with wire, then cooperate with pay-off pulley assembly to pull wire;After wire is in place, clamp is used to fix wire in place on first steel wire rope;Walking basket is set on first steel wire rope, personnel is moved to walking basket in the tower nearby, and walking basket is moved to the jointing point of two adjacent wires to joint the end of two wires;From the selection of pulley, the technology of jointing and the method of construction, three dimensions are discussed, a kind of technology without jointing pipe over pulley is discussed, the safety of construction is guaranteed, and the quality of construction is improved.

The present application relates to a kind of methods for recycling drift buoy, comprising: the position of fixed rope is selected;Fixed rope;Loosen the rope;Tighten the rope;Salvage drift buoy.The present application uses a cross river rope fixed at one end on the opposite bank, utilizes the inclination angle between rope and water flow, repeatedly tightens and relaxes the rope, under the action of water flow and tension, without personnel diving and salvage by ship, easily gradually draws the drift buoy in the center of river to the bank and salvages on shore.The equipment used in the method is very simple, only a rope can float on water surface, without any mechanical equipment can recycle drift buoy, low cost, safe and reliable.

The invention discloses a river-crossing T-shaped rigid frame bridge demolition construction method which comprises the steps that cutting construction of a T-shaped rigid frame bridge is completed through rope saw cutting, and an auxiliary construction platform is erected in advance before cutting construction; the T-shaped rigid frame bridge is provided with a bridge main body and a plurality of bridge piers, the auxiliary construction platform comprises a platform body which is used for blocking and protecting the bottom of the bridge main body and can be used for driving, and the platform body is arranged and located under the bridge main body in the length direction of the bridge main body. The edges of the two transverse sides of the platform body respectively outwards exceed the edges of the corresponding sides of the bridge main body by a set distance; the auxiliary construction platform further comprises towers correspondingly arranged over the piers, and the towers are connected with the platform body through stay cables. According to the construction method, the navigation requirement of the bridge bottom can be met, meanwhile, the influence on the river water area is small, the influence on the surrounding environment and the dependency are small, and the dismantling construction efficiency of the bridge can be improved.

The utility model relates to the technical field of anemorumbometers, in particular to a bridge deck anemorumbometer of a river-crossing bridge. During installation, the guide rod is inserted to trigger a linkage mechanism of the limiting ball and the conical sleeve, and the conical sleeve is driven to move downwards through the limiting spring and the magnetic adsorption block, so that the conical sleeve moves downwards to clamp the limiting block, and self-locking fixation is realized; during disassembly, an external strong magnet adsorbs a magnetic block, a conical sleeve is driven to move upwards to release a ball, limiting of a guide rod is relieved, the overall stability is enhanced through multiple fixing columns, and the disassembly and assembly efficiency is greatly improved through the magnetic attraction unlocking design; environment data are monitored in real time through a wind speed sensor and a wind direction sensor, when the wind speed and the wind direction reach set numerical values, a control cabinet drives a servo motor to drive a photovoltaic assembly to steer, a wind shield faces the wind direction, and when wind blows the wind shield, a sliding support is in linkage with a brush plate to brush and remove dust on the surface of a photovoltaic energy storage device; after the set time is reached, the system automatically resets to realize self-adaptive dust removal.

The application relates to a construction method for combining a river in a field with a permanent drainage pipeline, which comprises the following steps: firstly, the river in the field is excavated by adopting earthwork slope excavation, and the river direction and slope are measured and positioned; secondly, a section transverse 'pin' shaped concrete box culvert structure is adopted to construct along the river flow; then, a secondary recovery pool structure is additionally arranged at a water point in the field to meet the water demand in the field; finally, after the structure construction is completed, earthwork is backfilled and compacted, and the pavement is hardened. After the section transverse 'pin' shaped concrete box culvert structure construction is completed, the structure can be backfilled and hardened, the river crossing commuting efficiency is improved, and the personnel falling into the river risk is reduced.

The utility model relates to the technical field of floating cranes, in particular to a river-crossing cable-stayed bridge steel box girder subsection hoisting device which comprises a floating crane platform, a winch set and a sling, a cargo boom is arranged on the upper side of the floating crane platform, a tower is arranged on one side of the bottom of the cargo boom, the top end of the cargo boom is connected with an inhaul cable, and a wiring board is arranged on the inhaul cable. A wire wheel shaft is arranged at the top end of the cargo boom, a wire guide wheel set is arranged at the top of the tower, one side of the top of the cargo boom is connected with a lifting hook assembly through a sling, a wire wheel is arranged on the wire guide wheel set and corresponds to the sling and the inhaul cable, and winches corresponding to the sling and the inhaul cable are arranged in the winch set. The winch drags the inhaul cable, controls the cargo boom to change the pitching dip angle, is convenient to be matched with the sling to hoist the steel box girder, shortens the length of the suspension section of the sling, combines two adjusting modes, and improves the suspension operation convenience and the suspension stability.

1. Name of the designed product: ceramic pot (crossing river picture). 2. Use of the designed product: holding tea. 3. Design points of the designed product: combination of shape and pattern. 4. Picture or photo best showing the design points: perspective view.

The embodiment of the utility model provides an unpowered cableway ferry river-crossing steel cable pulley device. The unpowered cableway ferry river-crossing steel cable pulley device comprises a wheel disc and a pulley assembly. The number of the wheel discs is two, the two wheel discs are detachably and oppositely arranged, and a containing space is defined between the two wheel discs. The pulley assembly is detachably and rotationally arranged in the containing space, and a rotating shaft of the pulley assembly is perpendicular to the surface of the wheel disc. The pulley assembly comprises a first pulley block, a second pulley block and a third pulley block, and connecting lines of the center of the first pulley block, the center of the second pulley block and the center of the third pulley block form a triangle. The first pulley block is provided with a first annular groove, the second pulley block is provided with a second annular groove, the third pulley block is provided with a third annular groove, and the steel cable extends along a straight line and can be in sliding connection with the pulley assembly through the first annular groove, the second annular groove and the third annular groove in sequence. And the steel cable is tangent to the first annular groove, the second annular groove and the third annular groove.

The waterside arch bridge structure comprises bamboo piles, a foundation, a vertical wall and a steel corrugated arch which are sequentially arranged from bottom to top, the bamboo piles are inserted into soft soil on the two banks of a river channel, the foundation is fixed to the upper ends of the bamboo piles, and the vertical wall is fixed to the foundation; the steel corrugated arch is arranged across a river, and the two ends of the steel corrugated arch are fixed to the vertical walls. And improved soil, a cement concrete base layer, an isolating layer and a reinforced concrete surface layer are arranged on the steel corrugated arch and the abutment back. According to the waterside arch bridge structure, the bamboo poles serve as the pile foundations, the waterside arch bridge structure has the advantages of being light, high in strength, resistant to corrosion and the like, the steel corrugated arch replaces a stone arch, the weight of the bridge is greatly reduced, compared with a stone arch bridge, an arch frame does not need to be built, river channel boat sailing cannot be affected, and the waterside arch bridge structure has the advantages of being relatively concise in structure and low in manufacturing cost.

The utility model relates to a sea-crossing and river-crossing elevation measurement beacon lamp which comprises a target body and a base, the target body is fixedly connected to the top of the base, a fixing frame is fixedly connected to the top of the base, a rotatable cross-shaped wind plate and a reciprocating screw rod are arranged between a top plate and a bottom plate of the fixing frame, and the reciprocating screw rod is fixedly connected with the target body. And a cleaning rod for cleaning the target main body is arranged on the surface of the reciprocating screw rod. According to the sea-crossing and river-crossing elevation measurement beacon lamp, the cross-shaped wind plate, the reciprocating screw rod and the cleaning rod are used in cooperation, and when wind drives the cross-shaped wind plate to rotate, the driving rod and the multiscrew rod are synchronously driven to rotate; the cleaning rod moves up and down on the surface of the reciprocating screw rod, pollutants on the surface of the target body are cleaned through the brush on the surface of the cleaning rod, cleaning by workers is reduced, the working efficiency of the workers is improved, the LED lamp on the surface of the target body can provide light during measurement, and the measurement accuracy is improved.

The utility model relates to the technical field of river-crossing pipeline decoration, and discloses a river-crossing pipeline modularized decoration structure convenient to maintain, which comprises a pipeline assembly, a slide rail assembly, a decoration assembly and a ring pipe hoop assembly, the slide rail assembly is arranged on the surface of the pipeline assembly, and the decoration assembly is arranged on the top of the slide rail assembly. The upper half-circle steel ring and the lower half-circle steel ring are arranged to be matched with the fixing bolt to penetrate through the lower half-circle steel ring and the upper half-circle steel ring and extend into the fixing sleeve, so that the ring pipe hoop assembly can be tightly fixed to an original pipeline through the connection mode, and effectiveness of the protection function of the ring pipe hoop assembly is guaranteed; according to the annular pipe hoop assembly, the overall strength of the annular pipe hoop assembly is enhanced by arranging the annular pipe hoop reinforcing ribs welded to the surface of the lower half circle of steel ring, when external pressure is borne or a pipeline is fixed, the reinforcing ribs can prevent the steel ring from deforming, it is ensured that the annular pipe hoop assembly can stably hold the original pipeline, and the stability of the whole pipeline decoration structure is improved.

The utility model relates to a full bailey beam support for an overwater cast-in-place box beam. The problem that a river-crossing full support limits water surface transportation is effectively solved. According to the technical scheme, the device comprises steel pipe piles, lower-layer I-shaped steel, Bailey beams, upper-layer I-shaped steel and a full framing, the lower-layer I-shaped steel is arranged and installed at the upper ends of the steel pipe piles, the Bailey beams are vertically arranged and installed on the lower-layer I-shaped steel, the upper-layer I-shaped steel is arranged and installed on the Bailey beams, and the upper-layer I-shaped steel and the lower-layer I-shaped steel are parallel and perpendicular to the Bailey beams. The full framing is erected on the upper-layer I-shaped steel; through the combination of the structure of the full framing and the Bailey structure, the water surface transportation channel is reserved below the river-crossing full framing, and meanwhile, the early warning device is additionally arranged, so that the safety of the framing body can be fully guaranteed in the using process.

The invention relates to an intelligent monitoring system for embankment disturbance based on a river-crossing bridge, in particular to the field of water conservancy projects, and realizes full-flow accurate perception and mechanism description of embankment disturbance caused by bridge construction through a multi-source data fusion and dynamic digital twinning technology. In combination with causal reasoning analysis, key disturbance factors and influence intensity thereof can be identified from complex working conditions, and internal causal laws between construction activities and levee responses are disclosed; and finally, depending on prospective deduction and networked risk entropy evaluation, the crossing from passive monitoring to active early warning is realized, the early recognition and pre-control capability of the safety risk of the dam structure is remarkably improved, and intelligent decision support is provided for construction safety and engineering protection.

The invention discloses a pre-pressing type supporting system and construction method for an arch-shaped cast-in-place beam obliquely crossing a river levee, the pre-pressing type supporting system comprises a supporting pile system and a supporting frame system, the supporting pile system comprises a pile body, the supporting frame system comprises a formwork support, the formwork support is installed at the top of the pile body, a containing groove is formed in the formwork support, and the supporting frame system is installed in the containing groove. The containing groove is used for containing a pre-pressing load, the supporting system is used for bearing the cast-in-place beam, and the mass of the pre-pressing load is larger than the sum of the mass, borne by the formwork support, of cast-in-place beam concrete and the mass, borne by the formwork support, of the formwork. Compared with the prior art, the pre-pressing load with the preset weight only needs to be directly placed on the support, the problem that force application is limited due to the uneven river levee ground is avoided so as to adapt to the river levee crossing construction scene, secondly, compared with ground steel cable tensioning, additional arrangement of tensioning equipment and laying of a ground leveling device are not needed, the construction steps are reduced, and the construction efficiency is improved. The cost is reduced.

The utility model discloses a river-crossing buried pipe flow guide structure for a reservoir area, relates to the field of water conservancy projects, and aims to provide the river-crossing buried pipe flow guide structure for the reservoir area, which is convenient and quick to construct and low in risk. According to the technical scheme, the river-crossing buried pipe flow guide structure of the reservoir area comprises an upstream cofferdam and a downstream cofferdam which are both located between the two banks of a river, the whole cofferdam section or the local cofferdam section of the upstream cofferdam and the downstream cofferdam is of a permeable structure, and a foundation pit is formed between the upstream cofferdam and the downstream cofferdam. A buried pipe structure crossing a river is arranged in the foundation pit, the buried pipe structure comprises a pipeline foundation at the bottom of the foundation pit and pipe wrapping concrete located on the top face of the pipeline foundation, the pipe wrapping concrete is of a cast-in-place reinforced concrete structure, and at least one pipeline is arranged in the pipe wrapping concrete. The device is used for river-crossing pipe burying construction diversion of the reservoir area of the river reach where construction cannot be conducted in the dry period due to the limitation of the reservoir dispatching operation mode, and the flow of the river channel is large or narrow in the flood period.

According to the technical scheme, the automobile ferry roll-on and roll-off tool vehicle for the large vehicle comprises a crossing beam, a main folding turning plate is arranged at one end of the crossing beam, a walking beam is hinged to the other end of the crossing beam, and an auxiliary folding turning plate is hinged to the end, away from the crossing beam, of the walking beam. A supporting frame attached to the terrain of the steam ferry wharf is installed at the bottom of the walking beam, and a supporting plate attached to the deck face of the steam ferry ship is installed at the bottom of the side, away from the walking beam, of the crossing beam. Included angles between uphill and downhill of a wharf and a steam ferry gangplank are filled and leveled up through a smooth bridge formed by the auxiliary folding turning plates, the walking beams, the crossing beams and the main folding turning plates, so that an ultra-large object transport vehicle can get on and off the ship safely, meanwhile, the supporting plates are in plane contact with the deck surface of the steam ferry all the time, the stress area is large, the deck surface of the steam ferry is protected, and safety is guaranteed. The safety of boarding and alighting of the ultra-large truck is ensured, and the river crossing problem of the large transport vehicle of more than one hundred tons is solved.

The invention relates to a construction method for assembling bridge site hoisting steel beams of a river-crossing elevated portal crane, which comprises the following steps: S1, constructing a portal crane track foundation support system, and sequentially driving steel pipes and installing pile top cross beams, Bailey beams, transverse distribution beams and tracks; s2, a portal crane is installed in the land portal crane installation area, and installation of the portal crane is completed after trial operation inspection is passed; s3, assembling the steel beams into sections by using a portal crane in a bridge head steel beam assembling site; s4, steel beam bridge site supports are constructed, steel beams are hoisted to the bridge site supports through a portal crane, and installation construction of the steel beams of the whole bridge is completed; the steel pipe pile and bailey beam combined structure serves as a portal crane track foundation supporting system, the landing onshore portal crane is arranged in the air across the river, the portal crane walks across the river to conduct installation construction of the river-crossing steel structure bridge, the construction period of the river-crossing steel structure bridge is shortened, the construction cost is saved, and the high-altitude operation risk is reduced.

The invention discloses a temporary reinforcing device for coping with overload of a river-crossing bridge and an implementation method of the temporary reinforcing device. Comprising a rectangular supporting frame structure (1), a box-shaped steel base (2) arranged on the rectangular supporting frame structure (1), a servo jack synchronous jacking system (3) arranged on the box-shaped steel base (2), a force transmission steel beam (4) arranged on the servo jack synchronous jacking system (3) and a bridge structure (5) arranged on the force transmission steel beam (4). The servo jack synchronous jacking system (3) comprises a hydraulic jack (301), an oil pump driving system (302), a stress sensor (303), a displacement sensor (304) and an information control system (305). According to local conditions, supporting force is transmitted by innovatively adopting the buoyancy effect of water, a prefabricated steel structure technology is used in a matched mode, a temporary reinforcing scheme is rapidly implemented, meanwhile, a servo jack synchronous jacking system is adopted, stress and displacement in the midspan of a bridge are controlled within threshold values, and structural safety is guaranteed.