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105results about How to "Reduce project cost" patented technology

Drawing method of power network wind zone distribution map in mountainous area

The invention discloses a drawing method of a power network wind zone distribution map in a mountainous area. The method comprises the steps of data acquisition, data processing, data analysis, wind zone calculation model establishment, wind zone division, wind zone distribution map drawing and the like, the distribution map which can reflect recurrence periods of instantaneous maximum wind speed of the mountainous area can be obtained finally, the route design can be guided, the design which can be applied to adjusting measures to local conditions is conducted according to the instantaneous maximum wind speed wind zone level to drain wind deflection, the project manufacturing cost is reduced, the design which can be applied to selecting the safest and economical line route and prevent wind deflection accidents when building or transformation is conducted on a transmission line can be guided, and the problem that in the prior art, the wind zone distribution map drawing method can not meet the requirements of prevention and control work of wind deflection accidents in plateau mountain areas is solved; the technical problems that in the prior art, the wind zone distribution map lacks years of proofs of data collection, statistics of acquisition and modeling comparison and lacks theoretical support are solved.
Owner:ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD +1

Construction method of sprung roof plates by use of movable type pipe truss platform

The invention relates to a construction method of sprung roof plates by use of a movable type pipe truss platform. The construction method is characterized in that the movable type pipe truss platform is set up on a crane beam to realize rapid construction of the sprung roof plates; a pulley, a left limit block and a right limit block are arranged on the inner side of the bottom of a truss support for effectively preventing a truss from movement and preventing from detachment from the crane beam during movement; the construction method comprises the steps of assembling plane trusses on the ground, connecting the plane trusses to form a space truss, carrying out load testing, setting up a platform scaffold, mounting the sprung roof plates and moving the platform to the next room; compared with the prior art, the construction method has the beneficial effects that the setting-up operation of an all-round scaffold is avoided due to the movable type pipe truss platform, so that the construction cost is reduced; the structure is simple and easy to implement; subarea construction of air operation and ground operation can be adopted to form the three-dimensional cross operation, so that the construction is rapid; the pipe truss is provided with a left limiter and a right limiter, and therefore, the pipe truss is safe and reliable.
Owner:WUHU TIANHANG TECH GRP

Soft soil foundation air-water displacement and consolidation method

The invention discloses a soft soil foundation air-water displacement and consolidation method which comprises the following steps of: firstly, drilling a soft soil area requiring reinforcement according to vertical and horizontal layout with the intervals of 5 to 10m; inserting air pipes into boreholes, and connecting the air pipes and cross joint air valves with an air compressors and the air pipes inserted into the boreholes; arranging vertical and horizontal drainage channels between the boreholes; and then pressing air into the boreholes; filling air in the foundation soil layer requiring reinforcement; using air pressure to squeeze out groundwater in the soft soil layer to achieve air-water replacement; when the pressed-in air bursts out from the earth surface, stopping pressing the air into the soil layer and quickly deflating so that non-saturated soil produces compressive deformation under the load action of an overlaying soil layer, thus achieving the aim of reinforcing the foundation soil. By applying the invention, the depth of soft soil foundation drainage consolidation is unrestricted, the engineering cost is low, and project implementation process is simple and convenient, thus quickly producing the reinforcing effect of deep soft soil foundation and being suitable for the reinforcement treatment of complex environment soil foundations including offshore slopes and the like.
Owner:ZHEJIANG UNIV

Two-phase vacuum suction device with auxiliary chemical leaching and method for repairing soil thereof

The invention belongs to the technical field of polluted soil in-situ repair, and particularly relates to a two-phase vacuum suction device with auxiliary chemical leaching and a method for repairing soil thereof. The device mainly comprises a leaching solution box, a booster pump, a leaching pipeline system, a vacuum suction pump, a gas-liquid separator, a liquid-phase processing unit, a gas-phase processing unit and an intelligent electric control system. The method comprises the following steps of: installing the leaching pipeline system on the surface of a polluted site, selecting a leaching agent as well as the dosage and the concentration of the leaching agent according to the pollution situation and the hydrogeological condition of the site, and washing pollutants into a leaching solution after the leaching is concluded; and then starting the vacuum suction pump, and sucking the leaching solution out of the surface by applying a vacuum and then further processing the leaching solution. The device and the method disclosed by the invention have the characteristics of being rapid, economic, efficient and the like, and have a good removal effect for organic matter pollution and heavy metals, wherein the removal rate can achieve 80-90%, the construction cost is saved by 45-65% compared with the traditional one, and the operation management expense is saved by about 25-35%.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Method for constructing from central area to periphery of ultra-large type underground engineering

ActiveCN102995659AReduce project costImprove construction safety and reliabilityArtificial islandsUnderwater structuresEngineeringBuilding construction
The invention discloses a method for constructing from the central area to the periphery of an ultra-large type underground engineering, comprising the following steps of: firstly, sloping and excavating to the bottom of a pit in a middle area of the underground engineering; then, directly constructing a bottom plate of a basement in the middle area, and upwards constructing to finish a floorslab structure of the underground engineering; and establishing a peripheral bracing system by using the finished floorslab structure in the middle area as a bracing point to finally finish the construction for the peripheral basement. By utilizing the characteristic of large plane size of the underground engineering, the middle area is sufficiently utilized to slope for construction firstly, the underground engineering in the middle area is constructed upwards, and a peripheral area is provided with a permanent beam slab or temporary bracing as a bracing by taking a top beam slab of the underground engineering in the constructed middle area as the bracing point, so that the defects of causing difficulty in excavating and transporting soil in the peripheral area and controlling the stress direction of the peripheral diagonal bracing, affecting the engineering progress and improving the construction difficulty due to the adoption of the traditional central island construction method is foundationally overcome.
Owner:HANGZHOU NANLIAN BASE FOUND ENG

Numerical analysis method for stability of pole tower base on unsaturated expansive soil foundation

The invention discloses a numerical analysis method for stability of a pole tower base on unsaturated expansive soil foundation. According to the method, firstly, a pole tower base model and an unsaturated expansive soil foundation model are created; secondly, corresponding material properties are set for the pole tower base model and the unsaturated expansive soil foundation model respectively; thirdly, correlative analysis procedures are established, grid partition is carried out on the pole tower base model and the unsaturated expansive soil foundation model, boundary conditions for constraining the displacement of the bottom and the periphery of the unsaturated expansive soil foundation model are set, and gravity load and corresponding load on the upper portion of the pole tower base model are applied; finally, operation is submitted, and an operation result is analyzed. The method easily and effectively solves the problems that the pole tower base of an electric transmission lineis deformed and the stability is influenced since the water content rate of the unsaturated expansive soil foundation is changed; the bearing force of the unsaturated expansive soil foundation after the water content rate is changed can be obtained, and the numerical analysis method is provided for determining the stability of the pole tower base on the unsaturated expansive soil foundation.
Owner:STATE GRID CORP OF CHINA +2

Reinforced plate type fire control joint structure for space structure

The invention relates to a reinforced plate type fire control joint structure for a space structure. Six I-shaped section beams are fixed between an upper joint plate and a lower joint plate. A chuck I is arranged in a female clamping groove at the first layer. A cylinder reinforcement ring II or a prism reinforcement ring II is arranged between the chuck I and the lower joint plate. A pipeline is fixed to one of the I-shaped section beams, and a sprayer head is arranged in an equipment hole II and connected with the pipeline; or, at least one chuck II is arranged in female clamping grooves at all layers between the female clamping groove at the second layer and the female clamping groove at the Nth layer. If one chuck II is adjacent to another chuck II, one cylinder reinforcement ring I or prism reinforcement ring I can be arranged. If the chucks II are adjacent to the upper joint plate, one cylinder reinforcement ring II or prism reinforcement ring II can be arranged. Precasting and connecting of sub-parts are simple, detailed design can be conducted in combination with the stress conditions to improve the bending moment and shearing force transmission capacity, space is reserved for passing of pipes through a non-closed web zone, and due to use of a built-in spraying facility, the service building occasions of an aluminum alloy net shell structure are widened.
Owner:HARBIN INST OF TECH

Energy-saving boiler feed pump drive system for thermal power plant

The invention provides an energy-saving boiler feed pump drive system for a thermal power plant and solves the configuration problem of the water feed pump of a current thermal power generating unit and the problem that the water feed pump is high in energy consumption. A synchronous automatic clutch is disposed between a small steam turbine and a synchronous motor. A planet gear speed regulating device is disposed between the synchronous motor and the water feed pump. The synchronous motor is connected into a plant bus through a synchronizing switch. The water feed pump can be driven by the small steam turbine or the motor, the reliability is higher than a traditional steam pump manner or electric pump manner, optimized operation according to unit back pressure conditions can be achieved, and the drive manner of the water feed pump can be switched timely to save energy. An independent steam discharge cooling system for the small steam turbine is not needed, steam discharged from the small steam turbine can be directly discharged into a mainframe steam discharge system, influence on water feed adjusting due to the fact the shaft power of the small steam turbine is affected by back pressure sudden drop caused by high back pressure and heavy winds does not need to be worried about even for direct air cooling units, and system simplification and project construction cost lowering are facilitated.
Owner:DATONG COAL MINE GRP +1

Method for improving compression resistance bearing capacity of concrete prefabricated hollow pile

The invention discloses a method for improving the compression resistance bearing capacity of a concrete prefabricated hollow pile. In a static test of the concrete prefabricated hollow pile, the method can be used for improving the bearing capacity of the concrete prefabricated hollow pile when the vertical ultimate bearing capacity of a single pile can not meet the maximum loaded capacity of a test pile. The influence of a filling core is not taken into account in the design of the concrete prefabricated hollow pile, and the bearing capacity of a pile body meets actual design requirements; the influence of the filling core is taken into account in the process of static load detection, the bearing capacity of the pile body meets the requirement for the maximum loaded capacity, and the designed value of the compression resistance bearing capacity of the concrete prefabricated hollow pile is determined and appropriately improved conveniently according to the detection result; in addition, the length of the filling core is determined according to the detected maximum loaded capacity of the pile body and pile side resistance. The method for improving the compression resistance bearing capacity of the concrete prefabricated hollow pile is suitable for the situation that the compression resistance bearing capacity of the pile body is insufficient when the vertical ultimate bearing capacity of the single pile of the concrete prefabricated hollow pile is determined in the static test, is simple, is easy to implement, is effective, can appropriately improve the characteristic value of the bearing capacity of the single pile according to the detected vertical ultimate bearing capacity of the single pile, and saves construction cost.
Owner:SUZHOU INDAL PARK DESIGN & RES INST

In-hole point anchor slide-resistant pile barricade

The invention belongs to the field of slope treatment and discloses a novel in-hole point anchor slide-resistant pile barricade. The in-hole point anchor slide-resistant pile barricade comprises a slope top, slide-resistant piles, point anchors, anchorage sections and horizontal slumping arches, wherein the slide-resistant piles are arranged between the slope top and a slope bottom; anchor cables are disposed on the surfaces of the slide-resistant piles at intervals; one end of each anchor cable is provided with one anchorage section; the point anchors are disposed between the anchor cables and the slide-resistant piles; the horizontal slumping arches and vertical slumping arches are disposed between the point anchors; and a sliding fracture surface is disposed between the anchorage sections and the anchor cables, and the anchorage sections are arranged inside the sliding fracture surface. An in-pile point anchor technology combines the advantages of both a piled anchor method and a point anchor method, the structure safety can be ensured in the construction period, and the construction cost of the projects can be reduced; the novel in-hole point anchor slide-resistant pile barricade has the same construction method as that of a traditional piled anchor system; the structure of each pile body is small in size, the number of steel bars is small, the construction cost is low, and the construction period is short; and the defect that traditional point anchor support methods do not have vertical supports is avoided.
Owner:芜湖凡达机械科技有限公司

Construction method of water-stopping combined continuous wall prefabricated by centrifugal process

The present invention relates to a construction method of a water-stop combined continuous wall precasted by centrifugation. In order to form the water-stop combined continuous wall of the present invention, the concrete bodies (1) of a plurality of reinforced concrete members are proximately arranged with the lower sections planted into the ground, and each concrete body is structured as: water-stop grooves (2) are symmetrically arranged longitudinally from the head to the tail; each side can be provided with one or more water-stop grooves; water-stop material (7) is filled into water-stop cylindrical cavities (3) formed by the water-stop grooves of two adjacent concrete bodies; the top of each concrete body is provided with a connecting plate (4), which is provided with a preformed hole (6) in which a bar reinforcement (8) can be plugged; a cap beam (5) and the concrete bodies are casted together by the connecting bar reinforcements, the connecting plates and concrete, and the cap beam connects the arranged concrete body members as a whole to form an integral continuous wall. The present invention has the advantages of low construction cost, short construction period, good water-proof property, resource saving, reliable quality and high safety.
Owner:颜小荣
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