79 results about "Cross river" patented technology

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 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 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 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 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.

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 multi-sensor fusion and intelligent data transmission method for inland waterway inspection, which takes an unmanned ship as a core execution carrier to cover three inspection scenes of inland river revetment damage, overwater floating objects and river-crossing bridge pier stud structure damage. An inland waterway inspection task of the unmanned ship is designed in the whole process of navigation of the unmanned ship, target data collection of multiple scenes and transmission and analysis of the target data, and the inland waterway inspection requirements in different inspection scenes are met; the inland waterway inspection task comprises an inspection task initialization step, an unmanned ship autonomous inspection task execution step and an inspection task termination and subsequent processing step. According to the method, the problems of low efficiency, poor environmental adaptability, data processing lagging, insufficient fusion precision and the like of traditional inspection and existing unmanned ship multi-scene inspection are effectively solved, and reliable technical support is provided for inland river safety operation and maintenance.

The invention discloses a construction method for a shield under-crossing river section, and belongs to the technical field of tunnel engineering construction. Aiming at the problems of high water inrush and mud inrush risk, difficult settlement control, unbalanced efficiency and cost and the like confronted by water-rich karst stratum shield construction, the method realizes safe and efficient construction through a five-in-one technical system of investigation, reinforcement, regulation and control, monitoring and emergency; a high-pressure jet grouting pile anti-seepage curtain, a reinforcing mesh and an anchor rod are compounded to reinforce a riverbed, shield propulsion parameters and a grouting system are dynamically optimized in a double-stage mode to be matched with a complex stratum, a monitoring system is constructed, yellow-orange-red three-stage early warning adjustment is conducted, and accurate treatment measures are formulated according to reserve special emergency materials. According to the method, riverbed settlement is controlled within 3 mm, the construction efficiency is improved by 25%-30%, the engineering cost is reduced by 15%-20%, the influence on river ecology is small, and the method is suitable for river crossing construction of tunnel engineering such as subways and municipal pipelines.

The utility model discloses a kind of river-crossing bridge deck water taking devices, including the support mechanism for crossing bridge deck left and right width, water taking mechanism and the cross-width passageway assembly of being laid on support mechanism, water taking mechanism includes water pump, main pipeline, branch pipeline, tee joint and electric cabinet, electric cabinet is electrically connected with water pump, the water outlet of water pump is connected with the first end of main pipeline, the second end of main pipeline is connected with two branch pipelines by tee joint, to realize water supply to bridge deck left and right width simultaneously;The river-crossing bridge deck water taking device of the utility model, when encountering river-crossing bridge deck water taking device or water receiving vehicle failure, when needing overhauling, can directly cross width through cross-width passageway assembly, to install electric cabinet side and disconnect total power supply, avoid from one-way long distance detour, other special circumstances need to cross width, all can from here, safety condition meets requirement, save a lot of detour time, it is simple in structure, convenient to operate, can realize bridge deck left and right width water taking simultaneously.

The invention discloses a reinforced concrete composite bridge based on ECC connection and a design and construction method thereof. Aiming at the problems that the traffic interference is large, the cost is high and a hogging moment area at the top of a pier is easy to crack due to the fact that a temporary pier needs to be arranged in the traditional steel-concrete composite bridge construction, an innovative solution is provided: an ECC connecting plate is arranged between bridge deck plate slots of adjacent simply supported composite beams, and continuous force transmission of a bridge deck is realized through steel bar anchoring at two ends; an elastic baffle is additionally arranged at the bottom to isolate deformation constraint; during construction, temporary piers are omitted, the bridge deck slab is poured after the steel beam is directly hoisted, and finally flexible filling of the ECC connecting plate is completed. According to the method, the construction process is remarkably simplified, road-crossing / river-crossing temporary supporting is avoided, meanwhile, crack development is restrained through the strain hardening characteristic of the ECC material, high durability and driving smoothness of the bridge in the whole life cycle are achieved, and the method is suitable for urban and highway bridge construction.

1. Name of the Design Product: Crossing River Stone (Crab). 2. Use of the Design Product: The design product is a children's toy equipment for sensory integration training and expansion activities. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photo that Best Illustrates the Design Key Points: Combined State Three-dimensional Drawing 1. 5. Other Situations Requiring Explanation - Component Description: Component 1, Component 2, Component 3, Component 4, and Component 5 can be used separately during sensory integration training or combined according to training needs, such as combining Component 1 and Component 2, combining Component 2, Component 3, and Component 4, etc.

The present invention relates to the technical field of bridge reinforcement engineering, and in particular to a top-supported hollow arch bridge arch ring structure reinforcement structure and a construction method thereof. The top-supported hollow arch bridge main arch ring structure reinforcement structure comprises a carbon fiber reinforcement layer adhered to the lower surface of the main arch ring, a reinforced concrete structure layer provided under the carbon fiber reinforcement layer, and a composite material protective shell covering the upper surface of the main arch ring; the composite material protective shell comprises a flat plate with mortise and tenon joints at both ends, an arc-shaped vertical plate, an arc-shaped side plate and a tenon; the composite material protective shell is combined into different cross-sections by mortise and tenon joints, and serves as both a concrete formwork and an arch top surface protective layer. The present invention greatly simplifies the difficulty of reinforcing the arch ring structure of a cross-river arch bridge by adopting a high-performance and durable protective layer that also has the function of a permanent formwork and an arch ring ribbed reinforced concrete structure system. At the same time, it does not require circuit breaker construction and is widely applicable to the reinforcement construction of cross-river arch bridge structures.

The invention discloses a large-span landscape steel bridge supporting structure and a construction method thereof.The large-span landscape steel bridge supporting structure comprises a supporting foundation, the supporting foundation comprises a backfill layer, pressure-bearing piles and a bearing platform, the backfill layer is formed on a riverbed of a riverway, a drainage pipe is buried in the backfill layer, the pressure-bearing piles are arranged on the backfill layer in a driving mode and inserted into a stable layer of the riverbed, and the bearing platform is formed on the backfill layer; the pressure-bearing piles are supported on the bearing platform, and the bearing platform is arranged below the steel bridge body and the auxiliary arch; the first supporting module comprises a distribution beam installed on the bearing platform and arranged in the width direction of the steel bridge body, a plurality of supporting columns are vertically arranged on the distribution beam, and a supporting plate used for supporting the steel bridge body is installed on the supporting columns in a liftable mode; the second supporting module comprises latticed columns detachably installed on the steel bridge body and supporting beams used for supporting the anti-pushing arched beams, and the supporting beams are installed at the top ends of the latticed columns. The problem that an existing river-crossing and stream-crossing landscape steel bridge cannot be matched with a special-shaped structure due to the fact that a universal support is adopted is solved.

The invention discloses a river-crossing continuous beam bridge dismantling construction method based on a temporary supporting system. The river-crossing continuous beam bridge dismantling construction method comprises the steps that S1, a main pier zero block is temporarily consolidated; s2, a temporary supporting system is erected below the side span box girder; s3, the side span box girder sections are dismantled, and the temporary supporting systems in the areas corresponding to the side span box girder sections are synchronously dismantled; s4, the main pier zero block is dismantled; s5, the main pier column, the side pier column, the bearing platform and the pile foundation are dismantled; the main pier zero block is temporarily solidified, a temporary supporting system is erected below the side span box girder, a powerful foundation is provided for safe and efficient dismantling of the girder bridge, the overall stability in the main bridge upper structure dismantling process is ensured, and the safety risk is reduced; in addition, the river-crossing continuous beam bridge dismantling construction method based on the temporary supporting system can reduce the influence of navigation channels to the maximum extent, and the beam bridge dismantling efficiency is high.