925results about "Roadways" patented technology

The invention discloses a cementing material for a solid waste-based road of a coal-fired power plant and a preparation method of the cementing material. The cementing material mainly comprises a cementing component, an alkali-activated component and a reinforcing component, the gelling component is a mixture of coal-fired power plant fly ash and furnace slag; the alkali-activated component is a mixture of alkali residues, red mud, blast furnace slag and coal-fired power plant desulfurized gypsum; the reinforcing component is rice hull ash or peanut hull ash. The mass ratio of the gelling component to the alkali-activated component is (4 / 1)-(10 / 1); and the addition amount of the reinforcing component is 1-3% of that of the main body material. The coal-fired power plant solid waste fly ash, the furnace slag and the desulfurized gypsum are used as main bodies, a small amount of other industrial solid waste is added, and the cementing material belongs to a full-solid-waste low-carbon cementing material and can be applied to a road base, a subbase or a base layer. The invention has the characteristics of low carbon emission, high solid waste consumption, simple production process and strong pavement performance, and in addition, the invention has a good stabilization effect on the problem that part of solid waste heavy metals and sulfate ions in a coal-fired power plant exceed the standard.

The invention discloses a frozen earth region highway subgrade thaw collapse measurement method and system, and relates to the technical field of data measurement management, and the method comprises the steps: obtaining a to-be-measured subgrade region, obtaining a plurality of measurement directions, forming a node sequence of each measurement direction, and obtaining a blank measurement region; acquiring a first moment and a second moment, acquiring a first roadbed height sequence at the first moment, acquiring a second roadbed height sequence at the second moment, and acquiring a current roadbed height sequence; obtaining a current trend value, obtaining a first historical trend value, obtaining a second historical trend value, obtaining a first difference value, and obtaining a second difference value; and if the first difference value and the second difference value are both smaller than a preset threshold value, obtaining a measurement result of each blank measurement area according to the current roadbed height sequence of each node sequence. The method has the advantages of accurate prediction, high-precision measurement and adaptive measurement.

The invention belongs to the technical field of comprehensive utilization of industrial solid wastes, and particularly relates to a sawing mud-graphite tailing road base material as well as a preparation method and application thereof. The road base material is prepared by mixing saw mud, graphite tailings, a red mud-based cementing material, a reinforcing agent and water. The sawn mud-graphite tailing road base material is applied to a heavy traffic load road base with the strength requirement of 4.0-6.0 MPa. According to the sawing mud-graphite tailing road base material, all aggregates in a traditional road base material are jointly replaced by sawing mud-graphite tailings, and the red mud-based cementing material is adopted for curing, so that the utilization efficiency of solid waste recycling is greatly improved; and the problems of shortage of sand and gravel resources and high material cost of construction engineering in the road engineering construction process are relieved.

The invention provides a composite pile foundation structure for road surface rigidity optimization of a road transition section and a design and use method of the composite pile foundation structure, and relates to the technical field of composite pile foundations. The composite pile foundation structure can be applied to an embankment foundation and a bridge abutment pile foundation and comprises a bearing platform, a pile cap, a gasket, an elastic composite plate, replaceable filler, a pile and a pile end self-adaptive deformer. The design and use method of the bridge abutment pile foundation is guided by the load settlement characteristic of the butted roadbed, and the design and use method of the embankment composite pile foundation is guided by the settlement control standard. Design variables comprise the pile length, the pile diameter, the pile number, the compression thickness of the elastic composite plate, the arrangement depth of the replaceable filler, the limit pile side friction resistance of the replaceable filler and the compression modulus of the replaceable material, the structure can optimize the overall rigidity of the road surface on one side of the abutment, the phenomenon of bump of the abutment is effectively avoided, zero-differential settlement is achieved theoretically, and the construction efficiency is improved. And the settlement index can be controlled in the application of an embankment foundation.

The invention relates to a deep and thick high-temperature permafrost region highway foundation bearing capacity enhancing method which comprises the following steps: detecting the bearing capacity of a permafrost foundation through static sounding to obtain the spatial distribution characteristics of the bearing capacity of an original-state foundation; the spatial distribution characteristics of the bearing capacity of the undisturbed foundation at least comprise a bearing capacity mean value, a bearing capacity range and a bearing capacity decline ratio; establishing a mapping model at least based on the spatial distribution characteristics of the original-state foundation bearing capacity and the shallow foundation enhancement mode; based on the mapping model, according to the spatial distribution characteristics, obtained through detection, of the original-state foundation bearing capacity, the shallow foundation strengthening mode is determined, and the shallow foundation strengthening mode comprises a structural strengthening measure, a material strengthening measure and a hydrological regulation and control strengthening measure and is used for improving the overall bearing performance of the foundation and restraining permafrost degradation; the structural reinforcing measure at least comprises the steps that a composite bearing structure system is constructed in a shallow foundation, and the mechanical property of the whole foundation is improved by enhancing the bearing capacity of a local area of the foundation.

A valve assembly is provided, wherein the valve assembly includes: a valve member; a base including a base portion, at least two columns and at least two through holes, the base portion including a first side and a second side opposite to each other, the first side being configured to be abutted on a mounting surface, the at least two columns being protrusive from the second side and configured to support the valve member, the at least two through holes being disposed through the first side and the second side respectively and configured for installation of at least two positioning members which are configured to be disposed through the at least two through holes and secured to the mounting surface; and at least two fasteners being disposed through the valve member and connected to the at least two columns respectively.

The invention discloses an in-situ solidification construction method for a highway shallow foundation in a water-rich section of a permafrost region. The in-situ solidification construction method comprises the following steps: step 1, preparation at the early stage of construction; secondly, steel sheet pile enclosure water insulation is conducted; thirdly, in-situ soil solidification construction is conducted; fourthly, dynamic compaction encryption treatment is conducted; step 5, quality detection and molding acceptance inspection; and step 6, subsequent environmental protection and safety guarantee. Three dimensions of a steel sheet pile waterproof technology, a high-weather-resistance composite curing material in-situ curing technology and a dynamic compaction technology are integrated, and a set of systematized and standardized construction scheme is formed. According to the multi-dimensional combined method, the foundation treatment effect is improved, the comprehensiveness and pertinence of construction are enhanced, and a more effective solution is provided for road foundation treatment in the water-rich section of the permafrost region.

The invention discloses a soft soil foundation embankment heightening and widening structure and a construction method, and belongs to the field of water conservancy projects. In order to solve the problems of uneven settlement, landslide instability and overlarge occupied area easily occurring when the soft soil foundation embankment is heightened and widened, the structure comprises precast concrete piles (top beams and ripraps are arranged on the tops of the piles) densely arranged at the slope toe outside the embankment, an inner side cantilever retaining wall (with drainage holes and a gravel inverted filter), geogrids laid in backfill soil in a layered mode, and CFG piles arranged on the lower portion in a plum blossom shape. The guardrail base and the flower bed are integrally poured with the retaining wall. The construction method comprises the steps of slide-resistant pile construction, earthwork excavation, CFG pile construction, retaining wall pouring, embankment body backfilling and embankment top road construction. Bidirectional control over settlement and horizontal displacement is achieved through cooperation of multiple structures, variable-stiffness leveling can be achieved by adjusting parameters of the CFG piles, and the variable-stiffness leveling structure has the advantages of skid resistance, stability, landscape optimization and land occupation saving and is suitable for soft soil foundation embankment upgrading and reinforcing projects.

The invention belongs to the technical field of roadbed construction methods, and particularly relates to a cement improved tailing roadbed construction method. The method comprises the following steps: S1, determining the water content and particle composition of the tailings; s2, calculating the average particle size of the tailings in each grade of particle size range; s3, calculating the thickness of a water film on the surface of the centrifuged tailings; s4, determining the cement dosage and the water-cement ratio in the cement-improved tailing roadbed material according to experience, and determining the water content control value of the cement-improved tailing roadbed material in the construction process; and S5, the tailings are evenly arranged on the roadbed, the water content of the tailings reaches the water content control value + / -1%, then cement is evenly spread, the cement and the tailings are mixed, leveling is conducted through a land leveler, and finally rolling forming is conducted through a heavy road roller. According to the method, when the use amount of the tailing raw material, the cement and the like changes, the field construction water content control value is calculated in real time, it is ensured that the performance of the cement-improved tailing roadbed material is optimal, and the engineering quality is improved.

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 relates to quick-setting early-strength bubble light modified in-situ soil and a preparation method and application thereof.The quick-setting early-strength bubble light modified in-situ soil is prepared from foam and slurry according to the volume ratio of (1-3): 1, the slurry is prepared from, by weight, 0-265 parts of in-situ soil, 265-530 parts of quick-hardening sulphoaluminate cement and 132-398 parts of water, and the foam is prepared from a foaming agent and water. Compared with the prior art, the bubble light-weight modified in-situ soil has the characteristics of rapid hardening, early strength, light weight, adjustability and high fluidity, and meets the rapid traffic requirement of emergency repair of roads.

This invention relates to the field of road construction technology, specifically to a prefabricated assembly structure for roadbed slope protection in mountainous wind farms, the slope protection method thereof, and the prefabricated assembly structure, comprising: a middle A-type tongue-and-groove section, a middle B-type tongue-and-groove section, an edge A-type tongue-and-groove section, and an edge B-type tongue-and-groove section; the roadbed slope protection comprises: n-level slopes, n = 1, 2, 3, ..., N-1, where the N-level slope is set on a foundation platform, and the n-level slope is set on the n+1-level slope; the n-level slope comprises: two prefabricated assembly structures for roadbed slope protection in mountainous wind farms as described in any one of claims 1-7; the prefabricated assembly structure provided by this invention consists of a middle A-type tongue-and-groove section, a middle B-type tongue-and-groove section, an edge A-type tongue-and-groove section, and an edge B-type tongue-and-groove section, which are rapidly assembled using mortise and tenon joints and groove joints; the slope protection of this invention includes an n-level slope and a foundation platform, with walkways set between each level of slope to enhance stability, significantly reducing the damage to the ecological environment caused by traditional mountainous wind farm roadbed construction.

The invention discloses a method for regulating and controlling the settlement of a widened roadbed based on a constraint separation wall, which relates to the technical field of civil engineering and comprises the following steps: S1, determining the horizontal position and the vertical depth of the constraint separation wall according to the width of a widened part roadbed, so that the settlement curve is the most smooth after the top of the widened roadbed is constructed; s2, an old roadbed step scheme is designed according to the position of the constraint separation wall, and step excavation is conducted; s3, according to the horizontal position of the constraint separation wall, construction of the constraint separation wall is conducted on the surface of the excavated step; and S4, new roadbed soil is filled and compacted, the constraint isolation wall and the excavated steps are covered, and roadbed widening and settlement control are completed. According to the method for regulating and controlling settlement of the widened roadbed based on the constraint separation wall, the fatigue life of the pavement can be greatly prolonged, the long-term use performance of the pavement can be guaranteed, cost reduction, efficiency improvement, low-carbon life extension and human-material-machine use cost reduction of road reconstruction and extension projects can be realized, and the construction period can be shortened.

The invention specifically discloses a self-adaptive multi-source fusion roadbed intelligent monitoring and dynamic regulation and control system and method, and relates to the technical field of civil engineering monitoring. The system comprises a differential sensing unit, a data transmission and processing unit, a hybrid model prediction unit and a dynamic regulation and control unit, the differential sensing unit acquires multi-dimensional data through the composite anchoring structure, the magnetic suction follow-up module and the optical fiber monitoring network; the data transmission and processing unit adopts a LoRaWAN protocol to transmit data and preprocess the data; the hybrid model prediction unit predicts a settlement trend and a risk level based on an STGCN-MHSA hybrid model and an MOPSO algorithm; and the dynamic regulation and control unit performs corresponding regulation and control according to the prediction result. The adaptive multi-source fusion roadbed intelligent monitoring and dynamic regulation and control system and method provided by the invention can realize high-precision monitoring and prediction, have an active regulation and control capability, and are suitable for roadbed health management in a complex scene.

The invention discloses a multi-source heat pump system and a control method thereof, and relates to the technical field of road roadbed maintenance equipment. Comprising ground heat source equipment, underground heat source equipment, a first heat exchange part, a second heat exchange part and heat dissipation equipment, the ground heat source equipment and the underground heat source equipment are connected, the first heat exchange part is arranged in the ground heat source equipment, the second heat exchange part is arranged in the underground heat source equipment, the first heat exchange part and the second heat exchange part are both connected with the heat dissipation equipment, and the heat dissipation equipment is used for being buried in a road roadbed. In the first state, an inner cavity of the first heat exchange piece and an inner cavity of the second heat exchange piece both communicate with an inner cavity of the heat dissipation equipment, and the first heat exchange piece and the second heat exchange piece are both in a heat absorption state; and in the second state, the inner cavity of the first heat exchange piece and the inner cavity of the second heat exchange piece are both disconnected from the inner cavity of the heat dissipation equipment, the inner cavity of the first heat exchange piece communicates with the inner cavity of the second heat exchange piece, the first heat exchange piece is in a heat absorption state, and the second heat exchange piece is in a heat dissipation state. The problem that an existing clean energy heat pump system is large in integration difficulty can be solved.

The invention relates to the technical field of intelligent road engineering, in particular to a long-life pavement structure optimization method and system based on artificial intelligence. The method comprises the following steps: obtaining pavement structure data, and constructing a structural mechanical model according to the pavement structure data to obtain the structural mechanical model; performing fatigue loss simulation according to the structural mechanical model to obtain fatigue loss data; carrying out rapid physical simulation according to the fatigue loss data to obtain loss simulation data; and performing physical prior life prediction according to the loss simulation data to obtain life prediction data. According to the method, through fracture entropy field modeling and crack density analysis, accurate quantification of spatial distribution and evolution trend of fatigue damage is realized. In combination with artificial intelligence-driven multi-time frame evolution simulation, the precision of pavement structure life prediction and the pertinence of design optimization can be significantly improved.

The invention relates to the technical field of building construction, and provides a foam light soil construction method and a roadbed structure, the construction method comprises the following steps: excavating a foundation pit, cutting a slope at an old road slope on one side of an original roadbed, and digging steps and a base; a baffle is vertically arranged, a baffle foundation is poured on the other side, opposite to the steps, of the foundation pit, the baffle is vertically arranged, and a filling area is defined; and layered filling is conducted, specifically, after the baffles are erected, foam light soil is filled into the filling area in a layered mode based on the height of each filling layer. Through the arrangement, the vertical additional stress of high fill construction on a foundation can be remarkably reduced, the post-construction settlement problem caused by overlarge self weight of a traditional material is effectively relieved, meanwhile, due to the characteristics that the foam light soil is high in flowability and can be used for pumping construction, the operation process is simplified, dependence on large-scale compaction equipment is reduced, the construction period is shortened, and the construction cost is reduced. The environmental influence and the cost caused by excavation and transportation of earthwork are reduced, and the reliability and the economical efficiency of roadbed widening engineering are realized.

The invention discloses a preparation method and application of a compaction-free solid waste polymerization roadbed filler constructed by adopting a dump filling method, belongs to the field of high-value and large-scale utilization of solid waste building materials, and particularly relates to a preparation method and a construction process of the compaction-free solid waste polymerization roadbed filler (comprising construction waste and tunnel excavation fragments) constructed by adopting the dump filling method. Large-particle-size building waste fragments and an early-strength solid waste-based cementing material are polymerized through a throwing and filling method, compaction-free and vibration-free construction is achieved through the self-leveling and self-compacting characteristics of cementing material slurry, vertical layered pouring can be achieved, and high-valued and large-scale utilization of solid waste and engineering economy are both considered. According to the present invention, the self-leveling and self-compacting characteristics are provided, the characteristics of the slurry are obtained through the preparation method, the ratio design in the preparation method is important, and the experiment support is provided, such that the ratio design and the experiment process and data are required;

The invention discloses an adjustable composite curing agent for fluid stabilized soil as well as a preparation method and application thereof, and belongs to the technical field of civil engineering materials. The technical scheme adopted by the invention is as follows: the adjustable composite curing agent for the flow-state cured soil comprises the following components in percentage by weight: 50-70% of a gel base material, 10-20% of a curing agent, 1-5% of a curing agent and 1-5% of a curing agent, 8-12% of an exciting agent; 5-8% of a function regulator; 15-25% of a filling material; wherein the gelling base material comprises 15-25% of ordinary Portland cement, 10-20% of steel slag micro powder, 10-15% of fly ash and 5-10% of coal gangue powder; the exciting agent comprises 4-6% of desulfurized gypsum, 2-4% of silica fume and 2-3% of sodium carbonate; by optimizing the ratio of the gelling base material, the excitant, the function regulator and the filler and combining with a specific raw material pretreatment process, the working performance of the flow-state solidified soil is ensured, meanwhile, the strength is precisely regulated and controlled, and the flow-state solidified soil has the advantages of being low in cost, high in solid waste utilization rate, adjustable in performance and capable of meeting municipal engineering requirements.

The utility model provides an expressway slope roadbed structure based on foam light soil, which comprises a vertical plate, an anchor rod is arranged on one side of the vertical plate, and the vertical plate is connected with a foundation of an expressway through the anchor rod; the supporting frame is formed by mutually inserting and connecting L-shaped supports, the L-shaped supports are mutually inserted and connected into a row to form a single-row structure, and the single-row structure is mutually lapped to form a layered supporting layer; the supporting frame is formed by mutually overlapping layered supporting layers, and one side of the supporting frame is lapped on the vertical plate; the outer protection plate is connected with the side, away from the vertical plate, of the supporting frame, and the area between the outer protection plate and the vertical plate is filled with foam light materials. According to the utility model, the supporting frame is constructed through the L-shaped supports, and the supporting frame is filled with the foam light material to form an integral structure, so that the overall structural strength in the highway slope roadbed is enhanced, and the requirement of supporting the foundation and reducing the bearing capacity of the foundation is met.

The invention provides a collaborative design method and device for an underpass channel structure and a pavement structure of an airport, and relates to the technical field of airport engineering.The method comprises the steps that a numerical calculation model integrating the pavement structure, a pavement base and the large-section underpass channel structure is established; applying a dynamic load for simulating the taxiing process of the aircraft in the model; performing first dynamic analysis on the numerical calculation model to obtain a maximum counterforce envelope diagram of a target substrate below a bottom plate of the underpass channel structure under the action of the dynamic load; determining a foundation optimization scheme based on the maximum reaction envelope diagram of the target substrate; determining a target area of a surface layer bottom plate of the pavement structure; performing second dynamic analysis on the numerical calculation model to obtain the bending-tensile stress of the pavement structure under the action of the dynamic load; and determining a reinforcement scheme of the target area based on the bending-tensile stress. According to the method, the base reaction force distribution under the action of the aircraft moving dynamic load and the quantitative relation between the coverage width ratio of the underpass channel structure and the pavement structure reinforcement area can be determined.

The invention provides a salinized soil curing agent and an in-situ curing method of salinized soil, and belongs to the field of industrial solid waste resource utilization and road engineering. The salinized soil curing agent comprises solid waste dry powder and a meta-aluminate enhancer, the solid waste dry powder comprises 20-25 parts by mass of fly ash, 30-35 parts by mass of superfine slag powder, 25-35 parts by mass of superfine steel slag powder and 10-25 parts by mass of desulfurized gypsum; the mass of the meta-aluminate enhancer is 1%-5% of the mass of the solid waste dry powder; the salinized soil is sulfate salinized soil or sulfite salinized soil. According to the salinized soil curing agent, sulfate or sulfite in salinized soil can be directly used as an exciting agent, salt stabilization and soil body structure strengthening are synchronously achieved, meanwhile, industrial solid waste can be effectively utilized, use of traditional high-energy-consumption cementing materials is avoided, construction energy consumption is reduced, and the environmental protection pressure of road construction is relieved.

The invention relates to the technical field of fan early warning, in particular to a roadbed settlement detection method and system based on microwave dielectric and AI algorithm fusion, and aims to realize accurate detection and early warning of roadbed settlement. Comprising the following steps: collecting geological parameters, historical settlement and image data of a target roadbed, and analyzing to generate a dynamic risk distribution thermodynamic diagram; an unmanned aerial vehicle carrying a dual-frequency microwave dielectric sensor and a multispectral camera is used for planning a path according to a thermodynamic diagram to collect data, and time-space synchronization and association are carried out. De-noising microwave dielectric data to construct a matrix, detecting anomalies by means of a CNN of a U-Net architecture, and determining a real settlement area in combination with an image. Related data are input into the bidirectional LSTM to predict the settlement trend, and the roadbed stability index is calculated in combination with geological parameters. Red, yellow and blue three-level early warning is divided according to the indexes, and corresponding maintenance schemes are generated according to different early warning levels, so that the safety and stability of the roadbed are guaranteed.

The invention discloses a multifunctional composite waterproof blanket suitable for roadbed engineering. The multifunctional composite waterproof blanket sequentially comprises anti-skid convex strips, a first waterproof layer, a leakage monitoring layer, a second waterproof layer, a water guide and drainage layer, a protection layer, a drainage line and anti-skid protrusions from top to bottom. The waterproof layer is formed by uniformly mixing super-hydrophobic soil and fibers and then clamping and sealing the mixture between two layers of non-woven geotechnical cloth according to a preset compaction degree; the water guide and drainage layer is composed of an upper layer of high-suction geotextile, water absorption and drainage yarn and a lower layer of permeable geotextile. The multifunctional composite waterproof blanket suitable for the roadbed engineering is used for solving the problems that an existing waterproof blanket cannot effectively block the migration path of water and rapidly discharge water accumulated in a roadbed in the water-rich roadbed engineering, and meanwhile, the situation of water leakage and waterproof material damage cannot be monitored in real time, so that roadbed diseases occur frequently and deterioration is accelerated; and the engineering waterproof and drainage quality is difficult to guarantee.

A comprehensive climate adaptability permafrost subgrade hydrothermal regulation system is provided. The system includes a wind-driven forced convection cooling plate, a wind-driven device, a thermal insulation layer and a capillary blocking covering layer, where the wind-driven forced convection cooling plate is laid at a bottom of a subgrade, and a slender channel is arranged in the plate; the wind-driven device is connected with the slender channel in the wind-driven forced convection cooling plate, and a liquid working medium is driven to flow in the slender channel by a pump; the thermal insulation layer is laid on an upper part of the wind-driven forced convection cooling plate; and the capillary blocking covering layer is laid on a slope.

The utility model relates to the technical field of roadbed engineering, in particular to a miniature steel pipe pile net structure for a karst area tunnel cavity base, which comprises a miniature steel pipe pile, a fixing ring, a butt joint plate, an abutting mechanism and a limiting mechanism, the fixing ring is sleeved outside the miniature steel pipe pile, and the butt joint plate is fixed on the outer wall of the fixing ring; the fixing rings arranged on every two adjacent miniature steel pipe piles are connected and locked through the butt joint plates, the abutting mechanisms used for connecting and locking the fixing rings and the miniature steel pipe piles are arranged on the fixing rings, the limiting mechanisms are arranged between the fixing rings and the linkage rings, and the fixing rings and the miniature steel pipe piles can be rapidly locked through the abutting mechanisms; the fixing rings of every two adjacent miniature steel pipe piles can also be quickly connected and locked through the arrangement of structures such as the butt joint plates, the fixing rings are combined to form a unified whole, the structure is simple and efficient, the linkage rings are locked through the limiting mechanisms by means of the arrangement of the limiting mechanisms, the linkage rings are prevented from rotating reversely, and then the butt joint plates can be firmly connected with the miniature steel pipe piles in a butt joint mode.

The utility model discloses a road structure suitable for a valley terrain. The road structure comprises an original foundation excavation step, a cement concrete pile, a sand cushion layer, a cement concrete plate, a pipe culvert, waterproof geotechnical cloth, a cement concrete wall, a hard geocell, a pavement structure and an EPS (Expandable Polystyrene) filling block. The pile foundation structure and the cement concrete plate are arranged at the bottom of the road structure, the cement concrete wall pairs divide the EPS filling area into a plurality of units and make direct contact with the exposed part of the pipe culvert to fix the pipe culvert, the hard geocell is laid on the cement concrete-EPS composite roadbed, and the pavement structure is laid on the geocell which is backfilled with plain soil. Through the combined arrangement of the pipe culvert and the sand cushion layer, smooth drainage of the valley terrain is guaranteed, the waterproof effect of the EPS roadbed is guaranteed through the arrangement of the reinforced concrete pouring structure and the waterproof structure layer, the pile foundation can transmit loads to a deeper soil layer with higher bearing capacity, construction is convenient, noise is avoided, and differential settlement of the roadbed is effectively reduced.

To provide a panel point member, a steel pipe column, a panel point structure, and a road structure for suppressing filling failure of a filler in a filling space in which a rib is installed.SOLUTION: A panel point member filled with a filler inside and fixed to a part of a steel pipe column includes a cylindrical body surrounding an outer surface of the steel pipe column, and the cylindrical body includes a plurality of inner ribs projecting from an inner peripheral surface. Each of the plurality of inner ribs is a panel point member in which the longitudinal direction extends in the circumferential direction when viewed in the central axis direction, and one end part in the circumferential direction is disposed at a position shifted in the central axis direction of the cylindrical body with respect to the other end portion.SELECTED DRAWING: Figure 6

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 utility model relates to a precast slab pile lock catch type mechanical connection structure which comprises a lock catch type mechanical connection device, a precast pavement slab, a precast tubular pile and an in-pile preset sealing plate, the lock catch type mechanical connection device is composed of a female buckle and a male lock, and the in-pile preset sealing plate is arranged on the lower portion of the lock catch type mechanical connection device to prevent post-pouring concrete from falling off and losing. An annular connecting part is arranged at the pile plate connecting position of the prefabricated pavement slab, the prefabricated pipe pile is connected with the annular connecting part through a lock catch type mechanical connecting device, and connection of the prefabricated pavement slab and the prefabricated pipe pile is achieved through alignment and insertion locking of the male lock and the female lock.