3652results about "Foundation engineering" patented technology

The present application belongs to the technical field of mass concrete construction, and aims to solve the problem of high thermal resistance and slow heat dissipation of traditional cooling pipe laminar bottom layer, and discloses a gravity dam construction cooling water pipe based on destruction of laminar bottom layer and a method thereof. The cooling water pipe comprises a plurality of series water pipe units, each water pipe unit comprises a steel pipe, a flexible spring hose is arranged in the steel pipe, and the spring hose forms a spiral protruding turbulence structure along the inner wall of the steel pipe; the hose is fixed by pointwise anchoring and outer wall surface bonding with glue, and a ring is arranged at both ends for limiting and assisting turbulence. The present application breaks through the thermal resistance of laminar bottom layer, greatly improves the hydration heat conduction efficiency, is convenient to construct and has durable structure, and is suitable for mass concrete temperature control requirements.

The invention belongs to the technical field of underwater operation, and relates to a maintenance device for a lower hinged support of a dock gate and a construction method thereof. The device comprises a waterproof cover box, a diving barge, a hoisting system and a drainage assembly, the waterproof cover box comprises a cover body and a channel well, openings are formed in the bottom and the top of the cover body, the bottom face of the cover body is in sealed compression joint with the surrounding structure of the lower hinged support to be maintained, the channel well is connected to the opening in the top of the cover body in a sealed mode, and the top face of the channel well is higher than the water surface. The diving barge is provided with a plurality of hydraulic supporting legs capable of ascending and descending so that the diving barge can be supported in the horizontal door pit. The hoisting system comprises a tower frame and an arm frame which are arranged on the diving barge, and one end of the arm frame is located above the cover body and connected with the cover body in a pressing mode; the drainage assembly comprises a submersible pump and a drainage pipe, the submersible pump is arranged in the cover body, one end of the drainage pipe is connected with the submersible pump, and the other end is led to the water surface through the channel well. According to the method, a stable dry operation environment can be rapidly constructed at the dock gate lower hinged support to be maintained, rapid maintenance is achieved, pollution to a sea area is avoided, and operation safety is improved.

The invention relates to the technical field of water conservancy project cofferdam construction, and discloses a cofferdam backfill supporting device which comprises a filler pipeline, a guide part is arranged on the filler pipeline, a positioning groove is formed in the outer wall of the filler pipeline, a supporting part is arranged on the filler pipeline, and the supporting part comprises a first supporting ring and a second supporting ring. The first supporting ring is slidably connected with the outer wall of the filling pipeline, a support is fixedly connected between the first supporting ring and the second supporting ring, a positioning part is arranged on the support and comprises a rod sleeve, and the rod sleeve is fixedly connected to the support. The guiding part and the supporting part are matched to avoid inclination and deviation of the pipeline, the positioning part and the calibration part are matched to improve the hole site calibration precision, the limiting part achieves conflict-free switching between the calibration part and backfill material injection, finally it is guaranteed that backfill materials are evenly filled, the problems of scattering and cavities do not exist, and the requirements for cofferdam impermeability and structural stability are met.

The invention discloses an intelligent self-adaptive pouring system and a pouring process, which are used for self-adaptive pouring of an anti-seepage wall and are characterized by comprising a concrete pressure conveying system, a liquid level monitoring and slurry recycling system and an intelligent pipe drawing system. According to the invention, a pressurization supply system based on a concrete delivery pump or a sealed pressurization tank is adopted, so that compared with a method of pouring depending on the dead weight of concrete in the prior art, the technical effect of applying continuous and stable extra pressure to the concrete in the pouring pipe is achieved; the pressure can effectively overcome larger resistance of concrete flowing in a guide pipe and a groove hole, so that the bottom opening of a pouring pipe is allowed to maintain a larger safety burial depth range in the concrete, the strict requirements for pipe drawing time and pipe drawing height control are remarkably reduced, the fault-tolerant capability of the system is higher, and the service life of the system is prolonged. And the risk of pipe casting caused by instantaneous overlarge burial depth is fundamentally avoided.

The invention relates to the technical field of wind power, and discloses a lattice type foundation for a wind power tower and a construction method thereof.The foundation comprises a plurality of bearing platforms, and a cross beam is fixedly connected between every two adjacent bearing platforms; a lattice type wind power tower column can be erected on the upper side of the bearing platform; an embedded pipe is reserved in the center of any bearing platform and used for penetration of a prestressed steel strand, and the prestressed steel strand can be fixed to the top face of the tensioning cavity; a tensioning cavity is formed in the bottom surface of any bearing platform and can be used as a prestressed steel strand tensioning or anchoring operation space; any bearing platform is provided with a pre-stressed anchor bolt assembly, and the pre-stressed anchor bolt assembly is suitable for being fixed to a lattice type wind power tower column. The multiple bearing platforms are adopted for providing support for fixing of the lattice type wind power tower, compared with a fan foundation of a traditional cylinder type tower, the land acquisition area can be remarkably saved, the material cost is reduced, and the wind power tower foundation is suitable for various terrain environments.

The invention belongs to the technical field of gravity dam construction, and provides an assembled concrete cooling pipe structure and method for gravity dam construction. The cooling pipe is composed of a plurality of pipe body units connected in series, and lining pieces are arranged in metal pipes of the pipe body units. The lining piece and the elastic steel sheets form a criss-cross cage type structure through the strip-shaped plates, the strip-shaped plates are provided with pitted surfaces and notches, the steel sheets can stretch out and draw back to achieve variable-diameter adjustment, and water flow can be forced to generate turbulent flow to damage the laminar flow bottom layer. The method comprises the steps of raw material pretreatment, notch and pitted surface machining, lining piece assembling, metal pipe assembling and fixing and pipe body unit series connection. The structure is stable, manufacturing is convenient, boundary layer thermal resistance can be reduced, heat transfer efficiency is improved, concrete temperature cracks are reduced, and the gravity dam construction requirement is met.

The invention discloses a wall-curtain combined anti-seepage system and a construction method thereof, and relates to the technical field of tailing pond seepage treatment. Performing lower curtain grouting construction; constructing an upper anti-seepage wall; wall curtain combination key part treatment; according to quality standard acceptance and monitoring, the anti-seepage wall is constructed in the fully-weathered layer and the strongly-weathered layer, the anti-seepage wall is embedded into the weakly-weathered layer by a certain depth, and curtain grouting is implemented below the anti-seepage wall, so that a combined anti-seepage system with the anti-seepage wall on the upper portion and the grouting curtain on the lower portion is formed; according to the technology, the defects that the grouting quality of the upper portion is poor, the construction depth and the construction period of the anti-seepage wall are short, and drilling and grooving are difficult when large boulders exist or the anti-seepage wall enters a batholith due to the fact that grouting stopping of the upper portion in sand gravel stratum grouting is difficult are overcome, the respective advantages of the two methods are effectively exerted, and a shallow flexible barrier is provided through the anti-seepage wall; and the problem of deep penetration is solved through curtain grouting, so that the overall anti-seepage performance is remarkably improved.

The invention belongs to the technical field of slurry pumping and discharging, and particularly relates to height-adjustable slurry pumping and discharging equipment which comprises two sets of inclined supporting rods. Each group of inclined supporting rods are arranged in a splayed shape; a mounting ring is fixedly connected to the top end of the inclined supporting rod; a cross rod is arranged on an inner ring between the two groups of mounting rings; the outer ring of the middle part of the cross rod is fixedly connected with a hanging lug; a chain block is hung on the hanging lug; a slurry pump is hung at the bottom of a lifting hook of the chain block; when the liquid level of mud in a mud pit fluctuates, an operator can adjust the lifting of the mud pump only by operating the chain block, so that the tedious procedures of binding, hoisting out, lowering and the like of a steel wire rope in a traditional mode are avoided, the non-operation waiting time is greatly shortened, and the construction continuity is ensured; meanwhile, the height of the slurry pump is adjusted in time, damage to the slurry pump is greatly avoided, the whole adjusting process is simple, an operator can independently complete the adjusting process, dependence on cooperation of multiple persons is reduced, and labor cost is saved.

The invention belongs to the technical field of breakwaters, and relates to a novel breakwater and a construction method and a using method thereof. Each breakwater section of the breakwater comprises an upper platform, a buoyancy tank and a plurality of foundation piles. The upper platform is arranged on a plurality of foundation piles, and a manger board is arranged on the head wave side of the upper platform; pile holes in one-to-one correspondence with the foundation piles are formed in the floating box, so that the floating box is arranged on the foundation piles in a sleeving manner and can move up and down, and the floating box is locked on the foundation piles or unlocked through the hydraulic locking device; one side of the buoyancy tank is attached to the manger board, and the top surface of the buoyancy tank is higher than the bottom surface of the manger board after the buoyancy tank moves downwards to sit at the bottom; the buoyancy tank is provided with a plurality of hollow cavities, communicating pipes with electric valves are arranged on the side walls of the hollow cavities, water passing pipes connected with the water pump are arranged on the bottom walls of the hollow cavities, and the water pump rotates forwards or reversely to introduce water into or discharge the water out of the hollow cavities. The buoyancy tanks are locked on the foundation piles in small waves, the manger boards are used for blocking waves, the requirement for exchange of water inside and outside the port is met, the buoyancy tanks sink to sit at the bottom and jointly block the waves with the manger boards in large waves, and the wave blocking effect is remarkably improved.

The utility model relates to a sliding shock insulation modular building which comprises a module group forming a building main body. The building foundation is used for bearing the module group; the sliding layer is arranged between the module group and the building foundation and comprises an upper sliding interface and a lower sliding interface which are fixedly connected with the bottom of the module group and the top of the building foundation respectively, and a sliding medium arranged between the upper sliding interface and the lower sliding interface; and the sliding starting control part is connected with the module group and the building foundation and is used for controlling the sliding starting state. Compared with the prior art, the earthquake response of an upper modular building can be reduced, non-structural members in the modules can be protected, the module units are lighter in design, the connection between the adjacent modules is simpler, and the connecting structure adapts to the characteristics of various layouts and stress; the anti-seismic performance of the modular building is improved through simple sliding seismic isolation measures which are low in manufacturing cost and convenient to construct.

The present invention relates to a six-point truss-type sand pumping and lifting device for a mattress laying vessel. The device comprises a support assembly and six working assemblies. The six working assemblies are all slidably connected to the support assembly. Each working assembly comprises a moving assembly, a sand pumping assembly, and a lifting assembly. The sand pumping assembly and the lifting assembly are both connected to the moving assembly, and thus move and work by means of the moving assembly. The support assembly comprises two main beams. Two ends of each main beam are respectively connected to one main frame support leg. Two auxiliary beams are connected between every left and right main frame support legs. The moving assembly is slidably connected to the two main beams. Each auxiliary beam is connected to a hydraulic pump station, a frequency converter cabinet, and a cab. The present invention minimizes the labor intensity of operators and labor costs, and can effectively improve medium precision control, safety performance, and construction efficiency in the construction process.

The invention provides a foundation pit water gushing iron ore grading thixotropic blockage reduction method which comprises the steps that iron ore tailings are crushed and screened into multi-stage particle size particles, and a customized mold is subjected to 3D printing based on foundation pit scanning data; paving particles in a mold layer by layer, doping iron powder, and cementing and curing cement paste to form a prefabricated body; the prefabricated body is installed to a water gushing area, the slurry viscosity is increased through a grading contact network, a weak gravitational flow state is triggered to be transiently changed to an anti-scouring state, and water flow speed reduction is achieved; alternating field induction micro-vibration is synchronously started during lateral grouting, and grout permeation and bubble discharge are driven; after solidification, the guide core body is pulled away, and remaining pore channels are self-compacted by a grading system to form an anti-seepage structure. The method has the advantages that the anti-scouring performance is enhanced; particle-slurry-foundation pit curved surface triple self-adaptive combination is carried out; the engineering cost is reduced.

The invention relates to the technical field of ocean engineering, and discloses an underwater foundation bed leveling and material supplementing operation device and a construction method. The device comprises a walking mechanism, a measuring mechanism, a leveling mechanism, a material supplementing mechanism and a control module. The walking mechanism is placed on the underwater foundation bed and can move. The measuring mechanism identifies the convex and concave defects of the foundation bed in real time; the leveling mechanism scrapes the protrusions through a spiral scraper. The material supplementing mechanism fills the sunken part from the working mother ship through a stone sliding hose; the control module integrates positioning and data processing functions, and realizes integrated closed-loop operation of measurement, analysis, material supplementation and leveling. The method comprises the steps of lowering and positioning, path scanning, defect identification, immediate leveling and material supplementing, and re-testing and verification. The problems that in traditional foundation bed leveling, measurement and operation are separated, efficiency is low, and precision is poor are solved, the method is suitable for the deepwater complex environment, and the leveling efficiency and quality are improved.

The invention discloses a mass concrete temperature control construction method and system based on phase change energy storage, and the method comprises the steps: S100, building a BIM model for a concrete member pouring region according to a design size, setting a temperature sensor in a concrete member to monitor data in real time, and predicting a temperature field in combination with the BIM model; s200, the space between the conventional cooling water pipe and the concrete protection layer is filled with phase change microcapsules in a gradient density mode, a phase change energy storage buffer layer is formed, and transfer of heat to the interior of the concrete member is delayed; s300, according to the predicted temperature field, the water inlet flow and the water temperature are dynamically adjusted, the temperature peak is controlled, and the cooling rate is controlled; s400, fiber grating sensors are arranged at the four corners and the midspan of the concrete member, and the strain change rate is detected; and S500, establishing a digital twin temperature control platform, integrating temperature, humidity and strain data, constructing a three-dimensional thermodynamic model, predicting the temperature rise trend of the concrete member, and performing adaptive regulation and control on the temperature. Temperature difference inside and outside the concrete is controlled through phase change temperature control.

The invention relates to the technical field of foundation engineering, in particular to a mixed tower fan foundation formwork erecting structure and method.The erecting structure comprises a tensioning chamber standing formwork, a tensioning anchoring end bottom formwork, an upper inner formwork, an outer formwork, a tensioning chamber formwork supporting system, a foundation upper inner formwork supporting system and an outer formwork supporting system; the tensioning chamber formwork supporting system comprises vertical rod supports located on the periphery and the center respectively, radial supporting vertical rods are installed on the tops of the vertical rod supports located on the periphery, cross rod supports are installed on the tops of the radial supporting vertical rods, and ring beam radial supporting cross rods used for supporting a tensioning anchoring end bottom die are installed on the tops of the cross rod supports. A center column is installed at the top of the vertical rod support located in the center, a radial horizontal supporting rod is transversely supported on the center column, and a vertical mold support used for supporting a stretching chamber vertical mold is installed at the end of the radial horizontal supporting rod. The foundation upper inner mold supporting system comprises an inner annular steel beam. The supporting structure assists in one-time forming of concrete pouring, and the overall construction quality is guaranteed.

The utility model discloses an inclined column template support frame for cast-in-place of a concrete beam, which is characterized in that a vertical steel pipe upright post and an inclined steel pipe upright post are fixedly arranged on a bearing platform by utilizing bearing platform anchor bolts, and the vertical steel pipe upright post and the inclined steel pipe upright post are pulled into a whole by a horizontal pull rod along the direction of a bridge; the inclined steel pipe stand columns at the corresponding positions in the single span are connected into a whole through corner connectors and horizontal cross rods. The unloading blocks are arranged on the top faces of the vertical steel pipe stand columns and the top faces of the corner connectors respectively. A bearing beam is placed on the top face of the unloading block in the transverse bridge direction, a bailey beam is arranged on the top face of the bearing beam in the bridge direction, a distribution beam is placed on the top face of the bailey beam in the transverse bridge direction, and the batter post formwork supporting frame for concrete beam cast-in-place is formed. The bearing platform is fully used as a supporting point, the inclined steel pipe stand columns are arranged to share the upper load, a strip-shaped foundation does not need to be additionally arranged, construction cost is saved, the spanning capacity of the support is greatly improved, and the support is a preferable scheme for spanning rivers, roads and bridge sites in a large-span mode when the geological environment is poor.

The invention relates to the technical field of wind power towers, and discloses a concrete-filled steel tube truss type hybrid wind power tower which comprises a tower drum, a plurality of steel tube beams and a plurality of steel tube beams. The truss unit is suitable for supporting the tower drum; the transition unit is arranged between the tower drum and the truss unit so as to connect the tower drum with the truss unit; the bearing platform unit is arranged at the end, away from the tower drum, of the truss unit and suitable for bearing the truss unit; the truss unit comprises at least one pipe body, and concrete is poured in the pipe body. And the constraint stranded wires are tensioned in the axial direction of the pipe body and anchored to the transition unit and the bearing platform unit correspondingly, and the constraint stranded wires are at least arranged outside the pipe body. According to the concrete-filled steel tube truss type hybrid wind power tower, the constraint stranded wires are arranged outside the tube body, the situation that the cable penetrating process is complex and cannot be observed is avoided, the situation that the constraint stranded wires are mutually wound in the cable penetrating process is avoided, constructors can conveniently and directly observe the tensioning state outside, and it is ensured that prestress is accurately applied.

The invention discloses automatic grouting equipment for rock anchor rod foundation construction, and relates to the technical field of automatic grouting equipment, the automatic grouting equipment comprises a grouting pipe, a grouting connector and a grouting stopping mechanism, the grouting connector comprises a front connector and a rear connector which are detachably connected, the front connector is in butt joint with a rock anchor rod, and the rear connector is communicated with the grouting pipe; the grout stopping mechanism comprises a plugging piece and a sliding cylinder, the plugging piece comprises a sleeve and a concentric pipe coaxially and rotatably connected to the sleeve, and a plurality of first petal bodies distributed in a circumferential array are fixedly connected between the sleeve and the front connector; according to the automatic grouting equipment for rock anchor rod foundation construction, a rear connector is rotated through threads to be detached from a front connector, in the detaching process, a sliding barrel can be driven to move along the axis of a sleeve, and a concentric pipe rotates by a certain angle through a spiral sliding structure; and the overlapping station of each second petal body and each first petal body moves to the blocking station of each second petal body blocking each flow port one by one.

The invention discloses a self-resetting multi-section prefabricated assembled pier and a construction method, the self-resetting multi-section prefabricated assembled pier comprises a prefabricated cover beam, a pier column and a pier bearing platform, the pier column is formed by splicing a plurality of prefabricated sections, and is connected with the prefabricated cover beam through the prefabricated section located at the top; the prefabricated bent cap is connected with the pier bearing platform through a prefabricated section located at the bottom in a bell and spigot joint mode, and the non-adhesive prestressed tendons are connected with the prefabricated bent cap and the pier bearing platform and provide self-resetting capacity for the pier. According to the multi-section prefabricated assembled pier with the self-resetting capacity and the construction method, the formworks are prefabricated in a unified mode in a factory, the efficiency is improved while the prefabrication and construction cost is reduced, the mode of prefabricated section splicing and shallow socket connection is adopted, construction in narrow and complex terrains is facilitated, prestressed tendons used for self-resetting are arranged, and the construction efficiency is improved. The overall anti-seismic performance is improved, the integrity, rigidity and bearing capacity of the assembled pier are improved, the service life is prolonged, and meanwhile the maintenance cost is reduced.

The invention relates to the technical field of foundation pit dewatering, in particular to a foundation pit dewatering dynamic optimization method and system based on intelligent regulation and control. The method comprises the following steps: performing dynamic filtering processing on real-time water level data to obtain a water level prediction deviation; dynamically correcting the permeability coefficient through pore water pressure to obtain dynamic geological parameters; combining the water level prediction deviation, the dynamic geological parameters and rainfall infiltration replenishment to obtain rainfall demand characteristics; calculating a safety efficiency tradeoff coefficient according to the rainfall efficiency and the risk coefficient; and based on the rainfall demand characteristics and the safety efficiency tradeoff coefficient, using an improved particle swarm optimization algorithm to solve a dynamic rainfall scheme. Through multi-source data dynamic feature extraction, scene adaptive weight optimization and multi-dimensional risk coupling evaluation, high-precision control of the water level is realized, the safety risk and energy consumption are reduced, multiple scenes such as soft soil and sandy soil are adapted, and an effective scheme is provided for intelligent regulation and control of foundation pit dewatering.

The invention provides a construction method of a mixed tower fan foundation formwork supporting system, and relates to the field of wind power generation infrastructure construction. Supporting cushion components are arranged at the bottoms of the first supporting vertical rods, the first supporting vertical rods are arranged, and transverse horizontal rods and longitudinal horizontal rods are erected to form an annular supporting frame body; a first inner formwork is arranged on the outer side of the annular supporting frame body, a center supporting frame body formed by matching of an inner-layer supporting frame and an outer-layer supporting frame is synchronously erected in the annular supporting frame body, and the center supporting frame body and the first inner formwork are connected through a first horizontal supporting rod; a second inner template is mounted at the top of the annular frame body; a third inner formwork is arranged on the second inner formwork and connected with the center supporting frame body through a second horizontal supporting rod; binding foundation bottom plate reinforcing steel bars and stand reinforcing steel bars, and carrying out foundation outer formwork construction. And by reasonably reinforcing the mixed tower fan foundation template, the economical efficiency is improved while the construction quality is guaranteed.

The invention provides an ecological reinforcing structure of a river channel grouted rubble retaining wall revetment, the ecological reinforcing structure takes double-row pile foundations and a planting platform as a core design concept, the first pile foundation is located at the foot of an existing grouted rubble retaining wall, the top of the pile foundation is provided with a reinforced concrete guide beam, and the second pile foundation is located at the foot of the existing grouted rubble retaining wall; the newly-built guide beam is connected with an existing grouted rubble retaining wall base into a whole through embedded steel bars, the integrity and the anti-sliding capacity of the retaining wall are remarkably enhanced, and base emptying and wall body deformation are effectively restrained. The second pile foundation structure is a planting pile and backfill soil behind the planting pile to construct an aquatic plant planting platform, geotechnical cloth is laid between the planting pile and the backfill soil, soil particle loss can be prevented, water is allowed to freely permeate, and normal exchange between water and soil is maintained. The stability of an existing retaining wall is guaranteed, an aquatic plant planting platform is constructed, the whole reinforcing system is hidden under the normal water level, the natural form of a river channel is maintained, and deep integration of ecology and safety is achieved.

According to the existing building lifting method based on additional settlement generated in the grouting process, settlement of one side of an existing building is larger than that of the other side of the existing building, additional settlement exists on the large-settlement side of the existing building, a supporting curtain is arranged, the portion, prone to additional settlement, of a large-settlement area is blocked, slurry is prevented from being lost outwards during follow-up grouting lifting, and the problem that the existing building is prone to additional settlement is solved. The lifting force is effectively restrained in an area needing to be lifted, and lateral support is provided; the anchor point is locked through local grouting, and then block-by-block circulating lifting is carried out; the structural stress of the soft foundation in the main lifting area tends to be stable firstly and does not continue to deteriorate, the problem of additional settlement is avoided, and the lifting precision is better guaranteed; according to the method, the main lifting area, the transition area and the stable area are arranged, space isolation and differential control are conducted on the grouting area, the pain points of global homogenization, stress unrestraint and risk management and control difficulty of traditional grouting are improved from the source, and generation of additional settlement can be eliminated easily.

This invention relates to the field of grouting equipment technology, and particularly to a grouting device for geological disaster control. The device includes a conveying pipe, a filling cone, an automatic telescopic mechanism, an elastic adjustment mechanism, and a longitudinal discharging mechanism. The filling cone is connected to the top of the conveying pipe. The automatic telescopic mechanism is located inside the conveying pipe and moves synchronously with the filling grout entering the conveying pipe from the filling cone. The elastic adjustment mechanism is installed on the conveying pipe, with one end hinged to a movable plate in the automatic telescopic mechanism. The elastic adjustment mechanism moves synchronously with the automatic telescopic mechanism during operation. The longitudinal discharging mechanism is arranged inside the conveying pipe and is used to add reinforcing components during the conveying of the filling grout. This allows for automatic adjustment of the telescopic state according to the grouting process, adapting to geological cracks of different widths and improving the applicability of the device. Furthermore, multiple reinforcing components are added sequentially to the grout during grouting, enhancing the structural strength of the grout after solidification and preventing subsequent cracking.

The utility model provides a large-section stepped independent foundation formwork reinforcing device which comprises at least two layers of framework systems, the upper layer of framework system is arranged at the top of the lower layer of framework system in a supporting mode, U-shaped grooves used for being inserted into formworks are formed in the inner sides of the framework systems, and the outer sides of the framework systems are connected with inclined strut systems. According to the utility model, the upper-layer framework system is connected to the lower-layer framework system, so that a framework template of a step-shaped independent foundation is conveniently formed in a step-by-step supporting manner; the U-shaped groove is formed in the inner side of the framework system so that the formwork can be conveniently placed, the inclined supporting system is arranged on the outer side, and the inclined supporting system is supported on the ground and used for reinforcing and supporting the framework system, so that the framework formwork of the stepped independent foundation is firmer.

The application discloses a power transmission line assembled rock anchor rod foundation and a construction method, which optimizes and combines an assembled pole tower foundation and a rock anchor rod foundation to form an assembled rock anchor rod foundation, divides a bearing platform and a main column part into a plurality of prefabricated components according to certain sizes, prefabricates the bearing platform bottom plate, the side plate and the main column in a factory in advance, transports the prefabricated bearing platform prefabricated components and the main column prefabricated components to a construction site for assembly, improves foundation construction quality, reduces on-site concrete maintenance time and material consumption of the pole tower foundation, shortens a construction period, reduces construction cost of the pole tower foundation, reduces environmental problems in the construction process, expands the use range of the anchor rod foundation and the assembled foundation, is beneficial to promoting mechanical construction of power transmission and transformation projects, and has good social and economic benefits and engineering application value.

The invention discloses an intelligent concrete water spraying maintenance system and method based on geotechnical cloth visual inspection, and the system comprises a visual monitoring subsystem which is used for collecting image data of geotechnical cloth covering the surface of concrete; the image recognition subsystem is used for preprocessing the image data and generating moisture content distribution data; the control decision subsystem is used for dividing panel sub-areas according to the coverage range of the water sprayers, identifying to-be-maintained areas with the water content lower than a threshold value, matching the corresponding water sprayers and generating control instructions; the water spraying execution subsystem is used for executing water spraying operation through adjustable equipment; and the closed-loop evaluation subsystem is used for re-measuring the moisture content for evaluation through the visual monitoring subsystem and the image recognition subsystem after the water spraying operation is executed, and optimizing a control instruction according to an evaluation result. Accurate sensing of the moisture content of the geotechnical cloth on the concrete surface and on-demand water spraying are achieved, water resources and labor cost are greatly saved, and the curing uniformity is improved so as to reduce the early crack risk of the concrete.

The invention discloses an arched concrete face rockfill dam and a construction method thereof, and relates to the technical field of water conservancy and hydropower engineering.The arched concrete face rockfill dam comprises dam body rockfill and a supporting assembly, and the supporting assembly is arranged on the slope face of the upstream side of the dam body rockfill; the arched panel unit covers the dam body rockfill upstream side slope surface, the vault of the panel unit faces the side away from the dam body rockfill slope surface, and the arched direction of the panel unit is the horizontal direction of the dam body rockfill slope surface, namely, the panel unit is arched transversely; the two ends of the panel unit are connected with the two supporting assemblies through hinge assemblies correspondingly, the hinge assembly structure between the arched panel and the arch support has good elasticity and deformation capacity, deformation of a dam body under the load effect can be effectively adapted, and panel damage caused by rigid connection is avoided; meanwhile, the design of the arch pier and the arch foundation ensures the stability of the arch support on the dam body, so that the stability of the panel is enhanced.

To install a platform fence without performing civil engineering work for reinforcing a platform.SOLUTION: The foundation structure for installing the platform fence 2 on the platform 1 having an overhanging shape of a platform upper part 3 and securing an empty space 4 below it includes a through hole 5 bored in an installation position of the platform fence 2, and a foundation support 6 erected on a bottom part of the empty space 4 just below it and having a top part reaching an upper surface of the platform 1 through the through hole 5. The foundation post 6 is divided into a lower post 7 standing on the bottom of the vacant space 4 and an upper post 8 inserted into the lower post 7, and the upper post 8 is provided on its side surface with an angle member 19 (hook) for defining an insertion position with respect to the lower post 7, and the angle member 19 is provided with an angle adjusting mechanism capable of setting an inclined posture of the upper post 8 with respect to the lower post 7.SELECTED DRAWING: Figure 1