20results about How to "Reduce engineering construction costs" patented technology

The invention discloses a foundation collapsibility monitoring data analysis platform, which relates to the technical field of foundation monitoring and data analysis and comprises a data acquisition module, a data fusion and analysis module, a risk assessment module and a result display and update module. Through innovative design of multi-source data fusion, geological survey data, environment monitoring data and foundation physical parameter data are organically combined, comprehensive and accurate assessment of foundation collapsibility is achieved, a multi-dimensional risk assessment index system is constructed by means of an advanced algorithm and dynamically updated, foundation collapsibility risk changes are reflected in time, and foundation collapsibility assessment accuracy is improved. Through visual display and interaction functions, engineers can conveniently and intuitively understand the foundation condition and obtain targeted risk management and control suggestions, the scientificity and rationality of engineering decision are effectively improved, the occurrence rate of safety accidents caused by the foundation collapse problem is reduced, the engineering construction and maintenance cost is reduced, and long-term stable operation of the engineering is guaranteed.

The invention provides a hydrogen energy power system suitable for a magnetic suspension railway vehicle. The hydrogen energy power system comprises a hydrogen storage system, a hydrogen fuel cell system, a heat dissipation and cooling system, an air filter, a connector and an electronic control unit (ECU). The hydrogen storage system comprises a hydrogen storage control unit (HSU), the hydrogen fuel cell system comprises a power control unit (PCU), and the ECU is used for collecting and processing state information of each system and sending out a control instruction; the ECU is connected with the PCU and the HSU, and the ECU serves as a main control unit and is responsible for receiving an instruction from a vehicle or a train operator and coordinating work of the PCU and the HSU according to the current running state of the vehicle; and the ECU sends a power demand instruction to the PCU and sends a hydrogen supply instruction to the HSU so as to ensure that the fuel cell can output corresponding power according to needs. The engineering construction cost of the track in the project is reduced, the project construction time is saved, funds are saved, and the method is environment-friendly.

The utility model provides an on-line drying and feeding system for blast furnace materials, which comprises a stock bin, a feeding device, a feeding device and a discharging device, wherein a plurality of discharging holes are formed in the bottom of the stock bin; each vibration screening feeding device comprises a material outlet and a powder outlet; the drying pipes are in one-to-one correspondence with the discharging ports, one end of each drying pipe is connected with the corresponding discharging port, the other end of each drying pipe is connected with the vibration screening feeding device, and each vibration screening feeding device is at least connected with one drying pipe; the heating device is used for heating the internal space of the drying pipe; a material inlet of the material weighing device is connected with a material outlet of the vibration screening feeding device; and the material conveying device is used for conveying the materials discharged from the material weighing device to the blast furnace. The system can realize on-line drying and screening of materials, reduces the moisture content and powder content of the materials, ensures the stable furnace condition of the blast furnace, is low in system construction and operation cost, and can meet the requirements of energy conservation and emission reduction at the same time.

The invention discloses an emergency repair method for a highway culvert, comprising: grouting reinforcement of a small conduit on a highway roadbed, grouting reinforcement of a sleeve valve pipe within the top range of a box culvert, backfilling of an arch culvert and part of a vertical shaft with underwater concrete; constructing anti-sliding piles at the foot of a highway slope, constructing support piles and water-stop curtains for a jacking work pit; constructing a crown beam and a plate support for a jacking work pit, excavating a working pit, casting a slide plate and a back beam, and constructing a ring beam for reinforcing a vertical shaft; prefabricating a box culvert, welding a steel shield and a steel blade foot, and installing a jack and a jacking iron on the back of the box culvert; lifting the box culvert, removing the support piles for the working pit, jacking the box culvert section by section, and suspending jacking when the steel blade foot approaches the outside of the existing vertical shaft structure; opening a hole in the vertical shaft, and constructing a waterproof device in the vertical shaft; continuing to jack the box culvert, entering the vertical shaft to receive the waterproof device, grouting and sealing the joints of the box culvert and the vertical shaft, removing the back beam of the working pit, and constructing an open-cut cast-in-place section box culvert. The invention can realize rapid repair of culverts under normal traffic on the highway.

An assembly type self-resetting shock insulation device suitable for an elevated silo relates to the technical field of shock absorption equipment, and comprises a steel silo, a supporting frame column, a supporting frame beam, a supporting cross beam, a supporting ring beam, a shock insulation device and a connecting piece of the shock insulation device, the steel silo is supported on the supporting ring beam, the supporting ring beam is supported on the supporting cross beam, and the shock insulation device is connected with the supporting frame column. The supporting cross beams are supported on the supporting frame beams, the supporting frame beams are fixed between the supporting frame columns, silo feet and an annular seat plate are arranged on the lower periphery of the upper portion of the silo, and corresponding bolt hole positions are arranged on the annular seat plate of the steel silo and connected with a shock isolation device. According to the assembly type self-resetting shock isolation device suitable for the elevated silo, the anti-seismic transformation reliability problem of an existing industrial elevated silo is solved, the construction transformation efficiency is improved, the earthquake damage risk is reduced, the earthquake vulnerability of the elevated silo is reduced, and the service life of the elevated silo is prolonged. And finally, the anti-seismic performance and the construction transformation efficiency of the elevated silo structure under an earthquake high-intensity area and an earthquake key monitoring defensive area are improved.

The invention provides a limit space ultra-large diameter shield efficient split launching method, and relates to the technical field of shield construction, the limit space ultra-large diameter shield efficient split launching method comprises the following steps: measuring and obtaining the shield length Ls1 and the downhole trolley length Ls2, calculating the longitudinal length La1 of a working well and the longitudinal length La2 of an underground excavation section, and then excavating a shield launching space according to the longitudinal length La1 of the working well and the longitudinal length La2 of the underground excavation section, the shield launching space comprises a working well and an underground excavation section perpendicular to the side wall of the working well. According to the efficient split launching method for the ultra-large-diameter shield in the limit space, a design method for the minimum value of the longitudinal length of the structure under the split launching condition of the 14-m-level ultra-large-diameter shield is provided, the open excavation engineering amount of a station or a working well is effectively reduced, the engineering construction cost is reduced, and the construction period is shortened. And moreover, by intensively arranging equipment necessary for split starting on the well descending trolley and adopting continuous tunneling construction, efficient split starting of the 14-m-level super-large-diameter shield is achieved, the construction risk is reduced, and the construction period is shortened.

The invention provides a reverse circulation PDC drill bit with detachable blades, which comprises a drill body, the drill body comprises a drill body, the top of the outer side surface of the drill body is provided with a shackle groove, and the top of the drill body is provided with a drill bit screw thread end; the multiple cutter wings are all arranged on the side face of the drill body, and the multiple cutter wings and the drill body are detachably installed; and the central water hole is formed in the drill body. According to the reverse circulation PDC drill bit with the detachable cutter wings, the drill body, the multiple cutter wings, the center water hole, the multiple drill bit water holes and other structures are matched with one another, during limestone drilling operation, the cutter wings and the drill body are detachably installed, when PDC teeth or gauge protection block teeth are abraded and damaged, the drill bit does not need to be overall disassembled, only the damaged cutter wings need to be independently disassembled for replacement, and the replacement cost is reduced. Therefore, the maintenance operation of the drill bit is simplified, the limestone drilling efficiency is improved, the overall service life of the drill bit is prolonged, and the engineering construction cost is reduced.

The utility model discloses a 5G integrated base station, relates to the communication base station field, and comprises a cover plate, the inner wall of the cover plate is provided with a baseband board, the outer wall of the baseband board is electrically connected with a PWR connector, the outer wall of the baseband board is electrically connected with a GPS connector, one end of the GPS connector is electrically connected with a first connecting line, and the other end of the GPS connector is electrically connected with a second connecting line. The outer wall of the baseband board is electrically connected with an RJ45 connector. According to the utility model, the cover plate is used for clamping and connecting the baseband board, when the device is used, the PWR connector, the GPS connector, the RJ45 connector, the SFP front transfer interface and the SFP rotary interface can be conveniently connected through the arrangement of the baseband board, a distributed base station BBU part can be placed in the RRU, and the integrated design is completed. An operator can only build the integrated base station when building the base station, the distributed base station effect is achieved, the number of management modules is reduced, and risk points are reduced. And meanwhile, the purchase cost, the engineering construction cost and the management cost can be reduced.

The invention discloses a pipeline multi-flow-state FVM simulation method based on a one-dimensional gas-water fluid model, and the method comprises the following steps: constructing and improving a one-dimensional control equation of a pipeline unsteady gas-water fluid model, so that the equation can meet the requirements of plug-shaped transient flow, pressurized water hammer transient flow and free surface transient flow at the same time; and seamless connection among different flow states is realized through a unified solution framework. A finite volume method (FVM method) in a Rohl-Philip format is adopted to solve the three flow states in a unified manner, the challenge that different flow states are suitable for thermodynamic basic relations and wave velocity equation differences is overcome, and the improved one-dimensional multi-equation fluid model can simulate multiple flow states at the same time. And finally, performing model evaluation verification on simulation of three flow states by using the model. The method provides stability and precision guarantee for real-time control simulation of an actual long-distance water delivery system, a rainfall flood system and a long-distance water supply system, and is of great significance in improving simulation precision and reliability of complex water conservancy projects.

The application discloses a kind of offshore wind farm off-grid operation period operation and maintenance self-powered system starting method, for the problem of high cost of existing diesel generator or energy storage system as operation and maintenance system main power supply, through the coordination control of wind turbine generator unit and small capacity energy storage equipment, the smooth start of off-grid operation wind farm operation and maintenance system is realized, and after starting, wind turbine can be used as the main power supply of operation and maintenance system.Compared with the existing scheme, the present application can significantly reduce the construction cost, effectively solve the off-grid wind farm operation and maintenance system power supply problem caused by the different construction of offshore wind farm and land access system line, has significant economic benefits and good application prospect.

The invention belongs to the technical field of urban bridges, and relates to an on-bridge water-permeable sidewalk and a construction method thereof.The on-bridge water-permeable sidewalk comprises an outer side curb and an inner side curb which are arranged on a bridge body, a pipe wrapping concrete layer and a longitudinal drainage ditch are arranged between the outer side curb and the inner side curb, and a bridge floor leveling layer and a bridge floor waterproof layer are arranged between the pipe wrapping concrete layer and the bridge body; a bridge crossing pipeline is arranged on the bridge floor waterproof layer and arranged in the pipe wrapping concrete layer, and the longitudinal drainage ditch is arranged between the pipe wrapping concrete layer and the inner side curb and communicated with a bridge floor drainage system through a drainage pipe. The tops of the longitudinal drainage ditches are covered with permeable grids, the top faces of the permeable grids are flush with the top face of the pipe wrapping concrete layer, and the surfaces of the pipe wrapping concrete layer and the surfaces of the permeable grids are completely covered with a non-woven geotextile inverted filter layer, a water seepage spring steel pipe layer, a permeable concrete leveling layer, a sand cushion layer and a permeable surface layer which are sequentially arranged. The pavement accumulated water drainage device can quickly drain the accumulated water on the sidewalk and keep consistent with the pavement of a connected road.

The invention discloses a photovoltaic flexible support system static wind instability critical wind speed prediction and related device, and belongs to the technical field of photovoltaic power generation, and the method comprises the steps: obtaining the static wind three-component coefficients of a photovoltaic module under different wind attack angles; based on the initial wind speed and the static wind three-component coefficient of the photovoltaic module, the static wind load borne by the structure at the initial wind speed is calculated; constructing a structure balance equation based on the static wind load, solving the structure balance equation, and extracting the torsion angle of the photovoltaic module from the obtained structure displacement matrix; updating a static wind three-component coefficient and a static wind load by a torsion angle of the photovoltaic module; and under the condition that the Euclidean norm of the calm wind three-component coefficient converges, the wind speed is increased, the structure displacement matrix is updated until the calm wind instability state occurs, and the wind speed in the calm wind instability state or the previous wind speed of the wind speed in the calm wind instability state is the calm wind instability critical wind speed of the photovoltaic flexible supporting system. The method has high universality, the wind tunnel test frequency can be effectively reduced, and the engineering construction cost is reduced.

The present invention provides an excavation device with a limit protection function and a square hole excavation method thereof, which are applicable to the field of engineering construction. The excavation device of the present invention includes a control cantilever, an eccentric rotating shaft, a spiral drill bit and a limit protection device, wherein the limit protection device includes a limit frame and a card plate, wherein the limit frame has an annular groove for accommodating the outer periphery of the card plate, the upper end of the limit frame is fixedly connected to the control cantilever, and the eccentric rotating shaft is connected directly below the control cantilever. The lower end of the connecting shaft of the eccentric rotating shaft is connected to the driving gear through the driving shaft through the cam assembly, and the driven shaft of the eccentric rotating shaft passes through the center of the card plate and is connected to the spiral drill bit. The present invention solves the problem that the horizontal lateral force of the drill bit of the excavation equipment increases suddenly, causing the cam assembly and the gear connection to be easily damaged. When the spiral drill bit encounters inclined rocks or hard objects, the limit protection device can provide a certain horizontal lateral force constraint. When it is detected that the horizontal side pressure exceeds a certain threshold, an automatic alarm is issued to prompt the on-site personnel to stop the excavation work.

The invention is suitable for the field of hydraulic structure design of water conservancy and hydropower engineering, and provides a gravity dam economic section automatic design method and system based on an intelligent optimization algorithm, and the method comprises the steps: inputting design parameters, and initializing an algorithm population; performing stability calculation and constraint verification on each candidate section in the population; the candidate sections are evaluated through a preset fitness function, the function applies a great penalty value to the sections which do not meet the stability constraint, and the volumes of the sections which meet the constraint are directly used as fitness values; the population is iteratively evolved by using an intelligent optimization algorithm, and individuals with better fitness values are continuously screened out; and finally outputting an economic section which meets all safety constraints and has the minimum concrete volume. According to the method, a complex constrained engineering optimization problem is converted into an unconstrained optimization problem, automation and intellectualization of gravity dam section design are achieved, the design efficiency is greatly improved, and the engineering amount of a dam body can be remarkably reduced on the premise that safety is guaranteed.

The invention discloses a mortar-free modular prefabricated pedestrian pavement structure and a construction method thereof. The mortar-free modular prefabricated pedestrian pavement structure comprises a base layer; the grid layer is laid on the base layer and comprises a plurality of unit modules, each unit module comprises a plurality of transverse rib plates and a plurality of longitudinal rib plates which are arranged in the same direction, a plurality of longitudinal rib plates are connected between every two adjacent transverse rib plates, the transverse rib plates and the longitudinal rib plates define a plurality of meshes, each unit module is provided with two opposite adjacent sides, an insertion plate is formed on one adjacent side, and the insertion plate is inserted into the insertion plate. A socket notch is formed in the other adjacent side, the plug board on one adjacent side of the unit module is detachably inserted into the socket notch of the adjacent unit module, and the plug board is mounted on the base layer in a height-adjustable manner; the surface layer comprises a plurality of prefabricated panels, inserting columns are formed on the back faces of the prefabricated panels, the inserting columns are detachably inserted into the meshes of the unit modules, and the grid layer is supported on the prefabricated panels. The problems that according to an existing prefabricated pedestrian pavement structure, dust is raised when cement mortar is used, and the construction difficulty is high are solved.

The present invention discloses a completely finished tunnel steel arch frame automatic production line and production process, the production line includes: a conveying mechanism; a butt welding mechanism, including a butt welding robot for welding two sections of I-beams; an arch bending mechanism for bending the I-beam; a cutting mechanism for cutting the I-beam; a drilling mechanism for drilling holes in the I-beam; a connecting plate welding mechanism; and a reinforcing plate welding mechanism. The present invention integrates the processes of butt welding, arch forming, cutting, drilling, welding connecting plates at both ends and welding reinforcing plates of the I-beam into an integrated design to form a complete completely finished steel arch frame automatic production line and production process, which can make the above processes closely cooperate, greatly improve production efficiency, reduce production costs, realize centralized and automated production operations of completely finished steel arch frames, realize mass production of steel arch frames, and ensure the final product quality of the steel arch frames to meet production and construction requirements.

The invention discloses a steel pipe column middle layer node connecting structure which comprises a plurality of outer reinforcing ring plates, a plurality of outer reinforcing ring plates and a plurality of inner reinforcing ring plates. The steel beam is connected with the outer reinforcing ring plate; the steel plate cover plates are arranged at the upper and lower ends of the outer reinforcing ring plate; the longitudinal steel plate is arranged on the steel pipe column, and one end of the longitudinal steel plate is connected with the steel plate cover plate; according to the scheme, the wing-expanded outer reinforcing ring plate is arranged at the middle layer node of the steel pipe column, so that the bending moment and shearing force of the node area of the steel pipe column can be effectively transmitted by utilizing the outer reinforcing ring plate, the purpose of connecting the steel pipe column and the steel beam is achieved, and the purposes of improving the node ductility and reducing the cost are achieved. The problem of difficulty in connection mode and construction of the middle layer side column and the middle column joint for connecting the steel pipe column and the steel beam is effectively solved, and the steel pipe column and the steel beam have great popularization and application prospects. And the steel bars in the horizontal direction are directly welded on the longitudinal steel plates, so that the work of welding on a construction site and detecting the welding seam quality is reduced, the construction quality is ensured, and the construction efficiency is improved.

This invention belongs to the field of DC grounding electrode technology, and specifically relates to a tree-shaped DC grounding electrode for smart grids and its design method. The technical solution is as follows: A tree-shaped DC grounding electrode for smart grids includes an electrode comprising a straight electrode trunk, several straight electrode branches located near the trunk, and an annular end electrode located near the other end of each straight electrode branch, with each branch corresponding to an annular end electrode; it also includes a central device or grounding electrode line terminal tower. The electrode is divided into several segments, each segment connected to a feeder cable, which is connected to the central device or grounding electrode line terminal tower via a conductor. This invention provides a tree-shaped DC grounding electrode for smart grids and its design method, ensuring the current discharge effect of the electrode while avoiding problems such as the need for large-scale demolition due to the surrounding of numerous buildings caused by the annular electrode arrangement.

The invention provides a thermochemical heat storage carbon capture device and a thermochemical heat storage carbon capture method.The thermochemical heat storage carbon capture device is characterized in that a heating piece is arranged in an endothermic reaction cavity and connected with a boiler so as to heat the endothermic reaction cavity through heat of the boiler; the oxide heat release part is provided with a heat release reaction cavity, an oxide inlet and a hydroxide outlet, the oxide inlet is communicated with the oxide outlet, the carbon capture part is provided with a carbon capture cavity, a hydroxide inlet and a flue gas inlet, the hydroxide inlet is communicated with the hydroxide outlet, and the flue gas inlet is communicated with a flue gas outlet of a boiler; the heat supply network water heater is arranged in the oxide heat release piece and the carbon capture piece and used for heating return water of the heat supply network. Through the technical scheme provided by the invention, the problem of high engineering construction cost of thermochemical heat storage and energy storage equipment and carbon capture equipment of a coal-fired thermal power generating unit in related technologies can be solved.

The application provides an ultra-deep vertical shaft secondary conversion shaft mouth gangue discharging system and a gangue discharging method. The system comprises a conversion trestle; a concentrated gangue stacking area is formed at the bottom of the conversion trestle; a cage is arranged in the vertical shaft in a liftable manner; at least two tracks and a cross transition turnout are arranged on the conversion trestle, one end of the track corresponds to the entrance and exit of the cage, and the at least two tracks are communicated through the cross transition turnout; a gangue turning operation assembly is arranged at one end of the track running conversion assembly away from the cage and corresponds to the concentrated gangue stacking area; and a ground transfer assembly is arranged in the concentrated gangue stacking area and is used for gangue external transportation. In the application, the track is used for the running of the mine car, there is no long-distance ring track, the land occupation area is reduced, the compact field area is adapted, the empty mine car after discharging of the gangue can return to the original path or return to other tracks through the cross transition turnout; under the premise of not reducing the operation continuity of the mine car entering and exiting the cage, the running distance of the mine car is shortened, and the gangue turning and discharging efficiency is improved.