514results about "Roadways" patented technology

The embodiment of the utility model provides a roadbed slope reinforcing device which comprises a supporting frame used for providing support and provided with a plurality of mounting connectors, reinforcing ribs are arranged in the supporting frame to improve the lateral pressure resistance, inclined wing faces are arranged on the two sides of the supporting frame, and embedded locking pieces are further arranged to ensure stable structural connection; the anchor rod is connected with the supporting frame, goes deep into soil and is used for anchoring the whole device in a roadbed slope; the reinforcing panel covers the outer part of the supporting frame and aims to form a continuous plane; the shear keys are installed between the supporting frame and the reinforcing panel, and shear force is transmitted through a meshing structure; wherein the embedded locking piece comprises a telescopic locking pin which is used for adjusting the locking force; a spiral blade is arranged on the anchor rod; and an expansion screw is arranged at the tail end of the anchor rod. Through the scheme of the embodiment of the invention, the soil lateral pressure resistance of the device can be improved.

The invention discloses an inverted trapezoidal pile cap and connecting beam combined pile-supported embankment structure and a construction method thereof. The structure sequentially comprises a foundation treatment layer, a rigid pile layer, a pile cap layer, a connecting beam layer, a mattress layer, a reinforcement layer and an embankment filling layer from bottom to top. The rigid pile layer comprises a plurality of cast-in-place piles or precast piles vertically arranged in the foundation. The pile cap layer is arranged at the top of the rigid pile, the pile cap is of an inverted trapezoidal structure with a square section, and the top plane size is larger than the bottom to form a load diffusion slope. The adjacent pile caps are connected through connecting beams with circular sections to form a space overall stress system. Grouting pipelines are reserved in the pile cap and the rigid pile and used for later reinforcement. The load transfer area is enlarged through the inverted trapezoidal pile caps, the horizontal rigidity and the torsion resistance are improved through the circular connecting beams, and the overall stability, the anti-settling performance and the long-term service life of the embankment are remarkably improved by combining the grouting pipelines and the reinforcing ribs.

The application discloses a mountainous city cross-river passage and riverbank road intercommunication overpass, which comprises: a bidirectional main road standard riverbank road is arranged along the river from east to west on the ground layer; a bidirectional main road standard cross-river passage is arranged on the ground in two layers from south to north and comprises two one-way cross-river bridges and two one-way tunnels; two ramps from the cross-river passage to the riverbank road are both provided with a two-layer annular rotation 360-degree structure in the middle, namely alpha type ramps; two ramps from the cross-river passage to the riverbank road are both U-shaped back ramps; a ramp from the riverbank road to the cross-river bridge is a bidirectional U-shaped back ramp; a ramp from the riverbank road to the cross-river passage tunnel is a right-turn directional ramp and is combined with the main line tunnel of the cross-river passage in the form of a tunnel; a ramp from the riverbank road to the cross-river bridge is a U-shaped back ramp; and a ramp from the riverbank road to the cross-river passage tunnel is a left-turn directional ramp and is combined with the main line tunnel of the cross-river passage in the form of a tunnel. The intercommunication overpass realizes the connection between the cross-river passage and the riverbank road in the narrow and long riverbank zone between the river and the mountain in the mountainous city, solves the height difference between the upper and lower layers by the ramp along the narrow and long riverbank zone, reasonably utilizes the space between the river and the mountain, avoids ecological damage, saves the land area and expands the application range of the intercommunication overpass of the riverbank zone in the mountainous city.

The invention relates to the field of intelligent traffic, and particularly discloses a crossroad traffic passing control method based on multi-phase cooperative control, which comprises the following steps that four directions of a crossroad are divided into two opposite passing groups, the first group comprises a first crossroad and a third crossroad, and the second group comprises a second crossroad and a fourth crossroad; setting a first phase for simultaneous straight passing of each group of intersections, wherein the passing time is T seconds; a straight passing period is performed at each group of intersections; according to the invention, four intersection directions are divided into two groups, and the straight-going phase and the left-turning phase which alternately run are set, so that vehicles in any direction only need to wait for one phase period (35 seconds) at most to pass, and compared with the traditional multi-phase sequential passing, the efficient signal timing mode has the advantages that the traffic efficiency is greatly improved, and the traffic cost is reduced. Therefore, the average waiting time of the vehicle at the intersection is greatly shortened to 35 seconds from 105 seconds, the passing efficiency is greatly improved, and the traffic pressure in peak hours is effectively relieved.

The invention discloses a solid-waste-based dredged sludge high-strength curing agent, a preparation method and application, and relates to the technical field of dredged sludge curing utilization, the solid-waste-based dredged sludge high-strength curing agent comprises 5-30% of coal gangue micro powder, 10-70% of slag micro powder, 5-20% of red mud micro powder, 5-25% of desulfurized gypsum micro powder, 3-30% of an activator, and 1-15% of an inorganic reinforcing agent. The curing agent is low in cost and wide in application prospect, solid waste resource utilization can be achieved, a new green sustainable development mode is constructed, the activity of the solid waste and dredged sludge is improved by adding the activating agent, curing of the dredged sludge is accelerated, and the strength of a cured body is improved by adding the inorganic reinforcing agent.

The invention relates to the technical field of frozen soil roadbed ventilation regulation and control, and discloses a ventilation roadbed wind collecting device which comprises a wind guide channel, a wind collecting device and a wind collecting device, and the outlet end of the wind guide channel is used for communicating with a ventilation structure in a roadbed body; the air collecting cover is rotatably arranged at the inlet end of the air guide channel around the axial direction of the air guide channel; the wind collecting cover is provided with an opening used for collecting natural wind, and the included angle between the direction of the opening and the extending direction of the roadbed body is an acute angle. Through the arrangement, the device can effectively collect natural wind from different directions, so that the air inlet efficiency of the ventilation roadbed under the variable wind direction condition is improved, and the thermal stability of the roadbed is further improved.

The utility model relates to the technical field of municipal engineering, in particular to a roadbed for municipal road engineering, which adopts the technical scheme that the roadbed comprises an original foundation and a substrate layer, earthwork is excavated on the top surface of the original foundation, the substrate layer is paved on the top surface of the excavated original foundation, and a roadbed layer is paved on the top surface of the substrate layer. A base layer is laid on the top face of the roadbed layer, a surface layer is laid on the top face of the base layer, a plurality of stand columns are arranged and installed on the surface of the original foundation, the lower ends of the stand columns are inserted into the deep position of the original foundation, fixing rods are inserted into the upper ends of the stand columns, and geogrids are fixedly installed between the fixing rods at the upper ends of the stand columns. The roadbed structure has the beneficial effects that the overall tensile strength and shear strength of the roadbed are enhanced through the geogrids which are vertically arranged in each layer of the roadbed, so that the effect of reducing hollowing in the roadbed is achieved, the problems of cracks, cracks or local collapse and the like on the pavement are further avoided, the service life of the pavement is prolonged, and the safety of the pavement is improved.

The application discloses an evaluation method for the coordinated deformation behavior of an embedded sensor and asphalt mixture, and there is no specification and accurate evaluation method for the coordinated deformation behavior of the embedded sensor and the asphalt mixture at present. The evaluation method is used for obtaining the tire action times corresponding to the cracking of an asphalt mixture rut test piece, the tire action times corresponding to the sensor misalignment node, and the tire action times corresponding to the sensor failure node as evolution evaluation indexes, and the coordinated deformation behavior between the sensor and the mixture is calculated and evaluated by using the three evolution evaluation indexes. The application can obtain the service life of the embedded sensor intelligent sensing structure under different load sizes and loading frequencies, is beneficial to subsequent determination of the best embedding process, embedding position of the sensor and mixture mix design matched with the deformation of the sensor or other related key parameters, and provides accurate data support for the design of a long-service-life and high-precision intelligent road embedded sensing system.

The invention provides a vehicle self-adaption compatible open island type elevated BRT station system which comprises an open island type elevated station structure, the elevated station structure comprises a ground layer and a two-layer composite layer arranged above the ground layer, and the two-layer composite layer comprises an open pedestrian overpass and an island type platform. The open type pedestrian overpass and the island type platform are of an integrated station-hall-free structure. The elevated station structure further comprises a central vertical traffic core connected with the ground layer and the two-layer composite layer. Passenger doors are arranged on the left side and the right side of a vehicle body of the BRT vehicle, a vehicle control system and an in-vehicle fare collection system are arranged in the BRT vehicle, and the vehicle control system is configured to automatically or manually control the passenger door on the corresponding side to be opened or closed according to the type of a stop platform. Through cooperation of station structure innovation, operation mode opening and vehicle configuration intelligence, the problems that a traditional BRT system is large in occupied area, poor in compatibility and rigid in dispatching can be solved.

The application belongs to the technical field of geological compositions, and particularly relates to a fly ash-based high-density geological composition, a preparation method thereof and application thereof in road engineering. The fly ash-based high-density geological composition comprises the following components in mass fractions: fly ash 50-60 parts; slag 20-30 parts; metakaolin 7-12 parts; modified nano Al2O3 2-4 parts; modified polypropylene fiber 1.0-2.0 parts; silica ash 3-8 parts; alkali activator 30-40 parts; and water 15-20 parts. The application provides a fly ash-based geological composition which has normal-temperature bending strength, compressive strength and excellent freeze-thaw resistance.

The subgrade anti-settlement structure is characterized in that a lower drainage layer has water resistance and is stacked on a cushion layer, and a lower geotechnical grid is arranged on the lower drainage layer; and the upper drainage layer is arranged on the lower geotechnical grid. The structural strip is embedded in the middle of the first rubber strip in the thickness direction and arranged in the width direction of the first rubber strip. According to the roadbed anti-settlement structure provided by the utility model, the strength of the first adhesive tape in the width direction is enhanced through the structural strips, and the structural strength of each grid in the lower geotechnical grids can be enhanced. By means of the lower geotechnical grid with the reinforced structure, the whole strength of the upper drainage layer is guaranteed, meanwhile, the toughness of each grid in the lower geotechnical grid is improved, and the possibility that the upper drainage layer is abnormal in structure is lowered. Reinforcement is achieved through compounding of the upper geotechnical grid, and the structural strength of the pavement layer is improved. Meanwhile, the structural stability of the upper drainage layer is improved, and the sedimentation possibility is reduced.

The present application relates to a kind of soft soil reconsolidation under dynamic load processing method, solve the vibration drainage of existing soft soil in consolidation method vibration frame structure, it is difficult to manufacture vibration support foundation, construction is inconvenient, the problem of destruction of foundation after recovery.The method mixes cement in upper layer soil, forms cement soil base layer with strength in C5-C15;Uniformly set water pipe on cement soil base layer;Vibration rod is set in each water pipe;Place stack load plate on cement soil base layer, and vibration machine is fixed on stack load plate;Vibration machine fixed on stack load plate vibrates, drives vibration rod in water pipe, and free water generated after vibration is collected in water pipe, water in water pipe is discharged using water suction pump, until no free water is discharged after a period of vibration operation.The present application solves the problem that general vibration machine cannot effectively vibrate deep layer soil, and removes free water generated after vibration from soil, simultaneously, promotes soil particle to rearrange, and enhances soil compactness.

The utility model discloses a municipal highway engineering soft roadbed treatment device, which belongs to the technical field of soft roadbed treatment, and comprises a support frame, a movable plate arranged on the support frame in a sliding manner, a spiral filling pipe rotationally arranged on the movable plate, and a material injection assembly arranged on the spiral filling pipe and used for transverse material injection of a notch, comprising transverse liquid injection pipes which are symmetrically arranged on a spiral filling pipe in a sliding mode, and the multiple transverse liquid injection pipes are in through connection through hoses. And the driving unit is arranged on the moving plate and used for driving the spiral filling pipe to rotate and the transverse liquid injection pipe to slide, so that the equipment is larger in grouting area and better in grouting effect, meanwhile, the number of grooves is reduced, and the equipment is higher in working efficiency.

The invention discloses a high and steep slope roadbed reinforcement and gravity type retaining wall combined supporting structure and a design method, the supporting structure comprises an embankment supporting structure and a drainage system, the embankment supporting structure comprises a gravity type retaining wall, the gravity type retaining wall is arranged on a moderately weathered slate of a slope toe, a reinforcement area is arranged above the gravity type retaining wall, and the drainage system is arranged on the gravity type retaining wall. The reinforcement area comprises a non-modified reinforcement area and a modified reinforcement area from inside to outside, and reinforcement materials are laid in the reinforcement area in a layered mode. A reinforced modified soil cushion layer is horizontally laid between the bottom of the reinforced area and the top of the gravity type retaining wall, and rib materials are laid in the reinforced modified soil cushion layer in a full-section mode. Identifying a damage mode of overall instability; and the rib material length and the retaining wall height are optimized according to different failure modes. Based on the cooperative supporting effect between the modified reinforcement and the gravity type retaining wall, the overall stability of the combined structure is improved, the length of the reinforcement and the height of the retaining wall are optimized, the construction cost is reduced, and the dual purposes of cost saving and engineering performance optimization are achieved.

The invention provides a construction method of a prefabricated assembled roadbed structure of a new and old expressway, which comprises the following steps: S1, carrying out stepped excavation on an old roadbed splicing area, and connecting a plurality of first splicing units with an old roadbed through a longitudinal insertion structure; s2, the first splicing units and the second splicing units are connected through first bolt connecting sets, and the second splicing units are connected through transverse inserting structures; s3, the adjacent first splicing units and the connected second splicing units are connected through second bolt connecting sets; s4, the first splicing unit and the second splicing unit are each connected with a leveling assembly used for adjusting the elevation and levelness of the first splicing unit and the second splicing unit; s5, sealing pieces are arranged between the first splicing units, between the first splicing units and the second splicing units and between the second splicing units; and S6, cast-in-place structures are arranged at the joints of all the splicing structures, the site cast-in-place workload is reduced, and rapid splicing of the new roadbed and the old roadbed is achieved.

The application discloses an isolation structure and method for reducing displacement of a railway pile foundation caused by shield construction, and the isolation structure comprises underpinning beams and 2N columns of inclined piles, and N is greater than or equal to 2; the underpinning beams are located below an existing railway subgrade; each column of inclined piles comprises a plurality of inclined piles with the same inclination direction and inclination angle; the 2N columns of inclined piles are divided into two groups; the pile bottoms of one group of the inclined piles are located on one side of a to-be-constructed shield tunnel, and the pile bottoms of the other group of the inclined piles are located on the other side of the to-be-constructed shield tunnel; two adjacent columns of inclined piles in the same group are arranged in an X-shaped cross mode; the pile tops of the two groups of the inclined piles are connected with the underpinning beams and form a portal type support structure; the to-be-constructed shield tunnel passes through the portal frame surrounded by the inclined piles and the underpinning beams; and the two groups of the inclined piles are located between original railway pile foundations and the to-be-constructed shield tunnel. The application can resist the horizontal deformation of the original railway pile foundations caused by the shield tunnel construction, reduce the settlement of the railway subgrade, and effectively protect the normal operation of the railway.

This utility model discloses a heat-insulating and ventilated composite structure for roadbed in permafrost regions of plateau areas. It includes a permafrost foundation, with ventilation mechanisms installed inside each foundation for road cooling. These mechanisms include ventilation ducts laid on the upper surface of the permafrost foundation, each duct connected to a connecting pipe. Protective netting is installed at the ends of the ventilation ducts. By installing heat-conducting rods and heat-dissipating fins inside the ventilation and connecting pipes, heat from the precast concrete slab and its surroundings can be quickly transferred into the ventilation and connecting pipes. Furthermore, heat dissipation is rapid while the ventilation ducts are ventilating, reducing the impact of roadbed heat on the permafrost foundation. By installing concrete pillars inside the permafrost foundation and laying precast concrete slabs on top of these pillars, the load-bearing capacity is increased, preventing large vehicles from squeezing the roadbed and causing damage to the ventilation ducts.

The present application relates to a logistics plot opening width determination method and system based on connected roads, according to the red line width of the external road connected with the plot, the road cross section and the size of the vehicle entering and leaving the plot, different cases are divided to determine the specific size of the plot opening width, compared with the current selected range value, the value is more scientific, the most suitable plot opening width size can be determined according to different planning requirements, not only can ensure that the large truck can pass smoothly, but also can not occupy too much land area, balance between plot utilization rate and vehicle passing safety.

The application discloses a kind of urban road width and cross section arrangement form measurement system and method, and the total width of road is calculated from the road region segmentation of road original image;The segmented road region is marked;Image features in the segmented road region are extracted and the corresponding road type is identified;Road classification is carried out according to road region field value and road type field value;The field value of Road_sort of M0 region and W 侧分带L And the field value of W 侧分带R , judge road cross section arrangement form.The application efficiently and safely realizes the measurement of urban large-scale road width and cross section arrangement form.

Provided are a roadbed material containing a particulate carbonated steelmaking slag and a powdery or granular raw material having a carbon fixation capacity and a method for producing the roadbed material without agglomeration of these raw materials. The roadbed material contains at least one of a carbonated steelmaking slag, a wood material, a synthetic resin, and natural fibers in an amount of not less than 1 mass % and not more than 90 mass %.

The utility model discloses a branch pile embankment reinforcing structure suitable for a deep soft soil foundation, which comprises a road surface, embankment filling soil, a geogrid, a broken stone hardcore, a solidification layer and a squeezing branch pile which are sequentially arranged from top to bottom, the squeezing branch pile downwards extends into the soft soil foundation, the top end of the squeezing branch pile is embedded into the solidification layer, and the bottom end of the squeezing branch pile is embedded into the solidification layer. And a force bearing disc is extruded and expanded in the curing layer at the top end of the extruded and expanded branch pile. The bearing disc is extruded and expanded in the curing layer to play the role of the pile cap, the load of the embankment is conducted to the branch disc pile, the low embankment is prevented from having a mushroom pavement by coordinating deformation, in addition, the tedious steps of pile cap construction are avoided, and the bearing capacity of the curing layer is fully mobilized.

The present application relates to ramming device technical field, especially a kind of roadbed ramming device, comprising: tamping subassembly, including rammer main body, the tamper head of being set to rammer main body end, the cover of being set to tamper head outer periphery and the through-hole of being opened in cover end face;Dustproof component, including pedestal being set to cover outer side, atomizing nozzle being set to through-hole port and pump pressure piece being set to pedestal interior;Positioning component, including baffle being set to cover bottom;Transmission component, including penetratingly set to cover outer wall shaft, extrusion block being set to shaft end and vertical rod being set to tamper head top;Noise reduction component, including rubber plate being set to cover inner wall, rotating frame being set to rubber plate inner surface and fur pad being set to rotating frame;Pedestal and atomizing nozzle are interconnected, shaft reciprocating motion by tamper head drives pump pressure piece for supplying liquid to atomizing nozzle to spray;Realize the synchronous inhibition of construction dust and noise.

The utility model relates to the technical field of vibration tests, and particularly discloses an aeolian sand roadbed vibration wave excitation test device which comprises an excitation mechanism, a clamping mechanism and a data acquisition mechanism. The vibration excitation mechanism comprises a signal generator, a power amplifier and a vibration exciter; the clamping mechanism comprises a clamping plate, a bolt and a transverse plate. The data acquisition mechanism comprises an acceleration sensor, a dynamic data acquisition unit and a data processor. Through the arranged excitation mechanism, the excitation state of a train at different speeds and under different load conditions can be effectively simulated by adjusting the output frequency and excitation force, the damage condition of the aeolian sand improved soil under different excitation conditions can be accurately obtained, and the damage condition of the aeolian sand improved soil under different excitation conditions can be accurately detected through the arranged data collector. The dynamic response characteristics of the cement modified aeolian sand sample under the excitation condition can be effectively obtained, so that the internal change of the cement modified aeolian sand sample is judged.

The invention provides titanium gypsum modified subgrade soil as well as a preparation method and application thereof. The invention relates to titanium gypsum modified subgrade soil, which is prepared from the following raw materials in percentage by mass: 5 to 10 percent of titanium gypsum, 60 to 75 percent of natural subgrade soil, 5 to 15 percent of modifier and 8 to 20 percent of water. The industrial solid waste titanium gypsum is utilized, and the purchase cost is far lower than that of a natural base material; the modifier adopts an industrial by-product to replace part of cement / lime, so that the engineering investment is remarkably saved. According to the titanium gypsum modified roadbed soil, effective utilization of titanium gypsum industrial solid waste is achieved, high-valued and large-scale resource utilization of titanium gypsum is achieved, meanwhile, use of natural roadbed soil is reduced due to use of titanium gypsum, the road engineering construction cost is reduced, and the roadbed engineering performance is improved.

The utility model relates to the technical field of road engineering structures, in particular to a pavement structure suitable for uneven settlement of a bituminous pavement of a soft foundation road section, which comprises a plurality of precast concrete piles inserted into an uneven settlement roadbed, and a cushion concrete plate is assembled at the tops of the precast concrete piles. A thickened bearing concrete plate is laid on the tops of every two adjacent cushioning concrete plates, a gravel bedding layer is arranged on the upper half portion of the prefabricated concrete pile, a gravel mattress upper layer is arranged above the thickened bearing concrete plates, an elastic buffering layer is laid above the gravel mattress upper layer, and a stress dissipation layer is laid on the upper surface of the elastic buffering layer. An asphalt surface layer is arranged on the surface of the stress dissipation layer, a bonding layer is arranged between the elastic buffer layer and the stress dissipation layer, and a plurality of anchor rods are arranged in the precast concrete pile. The structure is firm and stable, differential settlement development of the foundation can be restrained, and the influence of settlement of the soft foundation road section on the pavement is effectively relieved.

The invention discloses a multi-stage reinforcing construction method for a granite stratum high-filling roadbed, and belongs to the technical field of roadbed construction in road engineering. The method aims at solving the problems that the granite stratum and roadbed filler interface bonding is weak, water drainage in the high-fill body is not smooth, and stability control in the construction process is difficult. The method comprises the following steps: scabbling the surface of the granite foundation, and laying a cement bentonite slurry transition layer to enhance interface bonding; a vertical drainage system is arranged after the first layer of filler is laid; then layered filling and reinforcing are conducted, geogrids are laid on each layer, door-shaped anchor rods are used for anchoring, then a water-permeable gravel layer is covered, and circulation is conducted till the designed elevation is reached; meanwhile, monitoring points are arranged on the center line and the slope toe of the roadbed, and construction parameters such as filling pause, reinforcement layer addition or compaction process adjustment are dynamically adjusted according to horizontal displacement data. The method is mainly used for building the high-fill roadbed on the granite stratum, and the overall stability and construction safety controllability of the roadbed can be effectively improved.

The invention discloses a large-span arched girder and main and auxiliary arch cooperated double-layer landscape steel bridge which comprises a steel bridge body, the steel bridge body comprises multiple spans of steel box girders arranged side by side, the two ends of each span of steel box girder are installed on the two banks of a river channel, a motor vehicle lane is arranged in the middle of the steel bridge body, and non-motor vehicle lanes are arranged on the two opposite sides of the steel bridge body; the main arch comprises a plurality of core bearing arched girders, the core bearing arched girders are installed on the upper portion of the steel box girder, the inner arc faces of the core bearing arched girders face the steel box girder, and a plurality of supporting structures are connected between the inner arc faces and the steel box girder; the auxiliary arch comprises two anti-pushing arch beams and a landscape platform, the two anti-pushing arch beams are arranged on the two opposite sides of the main arch respectively, the two ends of the auxiliary arch are installed on the two banks of the river channel, the landscape platform is connected to the arch tops of the two anti-pushing arch beams, the landscape platform is connected to the arch tops of the core bearing arch beams, and sightseeing footpaths are arranged on the anti-pushing arch beams. The large-span landscape bridge solves the problem that landscape, functions and stress are difficult to balance when an existing bridge structure is adopted by a large-span landscape bridge.

The application belongs to the technical field of road engineering and foundation treatment, and provides a wind-sand composite roadbed resource intelligent grouting construction method and equipment, which comprises the following steps: after the foundation is leveled, wind-sand is used as the main filler to carry out layered paving and compaction of embankment and lower roadbed; grouting point positions are laid out on the lower roadbed layer; high-performance slurry is used to carry out pressure grouting, and based on the real-time collection results of the compaction degree, the penetration pressure-depth curve, the grouting flow, the lifting speed and the grouting amount per unit depth, the opening and closing of the grouting valve, the grouting pressure and the lifting speed are interlocked controlled or adaptively adjusted to form a continuous and uniform cement column reinforced body; the column top is controlled to be higher than the top surface of the lower roadbed to form a protruding section and is maintained until the preset strength is reached; then, geogrid is laid to make the column top protruding section penetrate and embed in the grid mesh, and the upper roadbed and the pavement structure are continuously constructed; the application takes into account the resource utilization of wind-sand, the collaborative utilization of industrial solid waste and the intelligent control in the construction process.

This invention relates to the field of marine engineering subgrade material preparation technology, and discloses a method for preparing high-performance subgrade materials based on fly ash modification. The method includes: spraying atomized activator onto the surface of fly ash particles, using inorganic acid to etch micro-pits on the surface and depositing mineral salts in situ; mixing activated fly ash with aggregates and an alkaline activator to prepare a subgrade mixture; applying high-frequency vibration pressure during compaction to inject the activating force into the micro-pits; and utilizing the osmotic pressure difference generated by the dissolution of mineral salts to drive the hydration products to grow outward from the micro-pits. This invention, through the concentration gradient generated by the mineral salt enrichment layer, causes the hydration products to form a reverse-growth interwoven structure within the pores, achieving a shift from passive barrier to active sealing defense, thereby improving the material's mechanical anchoring strength and resistance to ion penetration in high-salt marine environments.