227results about How to "Reduce engineering construction costs" patented technology

The invention provides a concrete combined aggregate processing system, which comprises a first receiver bin. A first bar type feeder is disposed below the first receiver bin, the undersize part of the first bar type feeder is connected to a rejected material storage yard through a first adhesive tape machine, and the oversize part of the first bar type feeder is connected to a first jaw crusher. The discharge port of the first jaw crusher is connected to an artificial break stone storage yard through a second adhesive tape machine. A second bar type feeder is disposed below a second receiver bin. The oversize part of the second bar type feeder is connected to a second jaw crusher, and the undersize part of the second bar type feeder as well as the discharge port of the second jaw crusher is connected to a natural gravel storage yard through a third adhesive tape machine. The system provided in the invention can adopt two material sources at the same time to conduct production and processing, and the processed combined aggregate can satisfy the quality requirements of concrete aggregates, so that the work efficiency of the aggregate processing system can be enhanced. Moreover, the system is in favor of the sufficient use of project excavation ballast materials so as to reduce resource investment and project investment, and is also beneficial to environmental protection.

The invention discloses an ecological comprehensive treatment system of a northern mountain river channel. The system comprises three sub ecological systems of an ecological permeable dike built on the upstream of a main stream and a branch stream of a mountain river, a reservoir pond arranged at the middle and downstream area of the mountain river and a wet land communicated with the reservoir pond, and adopts an ecological treatment mode of closure-storage-preservation. The construction method comprises the steps of: a) building of the ecological permeable dike; b) setting of a triangular pyramidal wood pile stone cage; c) building of the reservoir pond; d) planting of plants of the reservoir pond; e) building of a wet land system; and f) recovery of a river bank band. The system and the construction method can effectively intercept the mountain debris flow and the river non-point source pollution, adjust the river runoff, improve the hydrologic conditions of the mountain river in non-flood season, decrease the dry season of the mountain river, and facilitate to recover the ecological system of the mountain river. Meanwhile, traditional depressions and empty ponds in the mountain river can be used in construction, so that the engineering building cost is reduced, and the self-cleaning capacity of river water is improved.

The invention discloses a jacking pulling combined rectangular jacking pipe tunnel construction method. The lacking pulling combined rectangular jacking pipe tunnel construction method comprises the following steps that a the position of a fault jacking pipe machine is determined; b a butt jacking pipe machine is arranged in an original receiving well; c the butt jacking pipe machine jacks towards the fault jacking pipe machine, and the butt jacking pipe machine temporarily stops the jacking at a first set distance from the fault jacking pipe machine; d the fault jacking pipe machine is pulled back towards an original starting well for a second set distance, and the tunnel gap formed in the back pulling is reinjected while the back pulling is conducted; e when the reinjection is finished, the butt jacking pipe machine jacks forwards; f the steps from c to e are repeated until the two jacking pipe machines reach the original starting well, the two jacking pipe machines are lifted out of the well, and the tunnel is communicated through. A road surface large excavation repair fault jacking pipe machine is replaced by the jacking pulling combined rectangular jacking pipe construction through the tunnel axis line design, the back pulling rejection system, fault jacking pipe machine reform and special construction parameter set and control, influence to the surrounding environment is reduced, construction cost is saved, and construction period is shortened.

The invention provides a pile-forming method for a cement paste spraying multi-directional core entraining mixing pile, which is characterized in that (1) a mixing pile machine is in position and leveled, and a bit aims at a pile position; (2) a drill pipe downward stirs and cuts soil along a guide frame until the designed depth; (3) after the drill pipe reaches the predetermined design depth, concrete are locally and continuously sprayed and stirred at the tip of the pile for more than 10 to 30 seconds; (4) the drill pipe is lifted; (5) concrete spraying is carried out while stirring; the drill pipe is lifted to the surface of earth or the designed elevation to finish the construction of a signal multi-directional mixing pile; (6) the tip of the pile of a core pile passes through a central hole of a jacking pile platform and is inserted into the center of the finished multi-directional mixing pile; (7) after the core pile sinks by self-weight and is penetrated into a certain depth of the mixing pile, the core pile is collated along two directions and the verticality of the core pile is regulated; the core pile is continuously sunken without any unmistakable; and (8) the core pile is pressed by hydraulic static force until the designed appointed depth. The method can realize the synchronous implementation of the mixing pile and the core pile operation, has high working efficiency, convenient construction, and low construction noise; the stress of the pile body is more reasonable and the pile shaft has high strength.

The invention discloses alloy steel SDH55 for shield machine tools and a production method thereof. The alloy steel comprises, by weight, 0.4% to 0.55% of C, 0.10% to 0.40% of Si, 0.10% to 0.30% of Mn, 5.10% to 6.50% of Cr, 2.20% to 3.00% of Mo, 0.45% to 0.85% of V, the balance of Fe and unavoidable impurity elements, including not greater than 0.005% of S and not greater than 0.010% of P. The alloy steel high in wear resistance and high in toughness is made by means of matching, smelting, casting and electroslag remelting, by thermal feeding for high-temperature homogenous treatment after demolding, and by means of multidirectional forging, soft annealing and ultra-fining treatment; the problem that the current tools for shield machines are of short lives due to wear and failure and edges cracking caused by low toughness is solved; the alloy steel is of great significance to the development of the industry of special steels of shield machine tools.

The invention relates to a water sealing joint device of a large-depth underground continuous wall. The water sealing joint device consists of a water sealing connector plate and a rubber water stop; the water sealing connector plate comprises connector side plates connected in sequence, two arc shape plates, an H-shaped groove plate, an upper end plate and a lower end plate; the two arc shape plates are oppositely arranged in the middle at intervals along the width of a connector side plate, and the H-shaped groove plate is arranged in the middle between the two arc shape plates; the H-shaped groove plate has two opening ends, one end is fixed and connected with the two arc shape plates, and the other end is fixed and connected with the connector side plate; and the upper end plate and the lower end plate are arranged at the end parts of the two arc shape plates and the H-shaped groove plate. An opening slot is arranged at the middle part of the upper end plate and the lower end plate, and the rubber water stop is embedded in a gap between the opening slot and the opening end of the H-shaped groove plate. The connector side plate adopts a long strip shape thick steel plate, the upper end plate and the lower end plate adopt semi-circular steel plates, and the composite cross section of the two arc shape plates is matched with the shape of the upper end plate and the lower end plate. The depth of the opening slot of the upper end plate and the lower end plate is approximately identical to half of the width of the rubber water stop. The invention can improve the prior construction process, reduce the construction cost, and effectively improve the water sealing performance of the structure of the underground continuous wall.

The invention discloses a construction method for building a ground inlet and outlet type shield tunnel. The method comprises but not limited to the following steps in sequence: determining an axis of a tunnel line; arranging a shield initial base and a guide rail on the ground or a shallow buried heading; mounting a shield machine on the guide rail and installing and debugging the shield machine; obliquely pushing a shield into a soil body downwards along the axis of the tunnel line; gradually cutting the soil body through a cutter head; meanwhile, mounting a tunnel lining segment; obliquely pushing the shield out of the soil body upwards along the axis of the tunnel line; entering a shield receiving base which is arranged on the ground or the shallow buried heading in advance; separating the last segment out of the tail of the shield machine to run through a tunnel; arranging waterproof end walls at the end parts of the tunnel in a shield ground initial position and a shield ground receiving position; and covering soil to the waterproof end walls for construction. As the ground shallow buried heading is used instead of a deep and big working well, the engineering construction cost is saved and the building period is reduced. Energy-saving, environment friendly and low carbon building features are implanted to the underground space development field.

The invention relates to an anechoic chamber which is capable of carrying out acoustic testing, which comprises an anechoic chamber, and is characterized in that acoustic material is laid on the ground and/or the inner wall of the anechoic chamber; and a damping spring is further arranged on the ground of the anechoic chamber. The invention further provides a method for manufacturing the anechoic chamber capable of carrying out acoustic testing, which comprises the following steps: firstly, designing and mounting an anechoic chamber as required; then designing acoustic material and a sound-insulating structure according to the sound absorbing and acoustic insulating requirements of the anechoic chamber; and finally selecting and arranging a damping spring according to the total weight of the anechoic chamber. As the acoustic material and the sound insulating material are added to the prior anechoic chamber, the anechoic chamber has the advantage that not only the testing and research of electromagnetic compatibility, but also the testing and research of acoustic testing can be carried out, thereby avoiding repeated construction and greatly saving the cost of engineering construction.

The invention discloses a preparation method of modified polyether sulfone functional gradient separating films. The preparation method includes preparing and crushing aminated polyether sulfone separating films; subjecting aminated polyether sulfone separating film scraps, methyl acrylate and ethanediamine to Michael addition and amidation, loading arborization polyamide-amine function groups into the film scraps, and preparing modified polyether sulfone functional separating films with the arborization polyamide-amine function groups by a phase transfer technique; taking chitosan acetic acidliquor and trimesoyl chloride normal hexane liquor as a water phase and an organic phase respectively, and forming nanofiltration aromatic amide ultrathin layers on the surfaces of the modified polyether sulfone functional separating films through interfacial polymerization to obtain the modified polyether sulfone functional gradient separating films. The preparation method has the advantages that the method is simple and convenient to operate, and the coating process of the nanofiltration ultrathin layers is green and environment friendly; the prepared separating films effectively integratetreatment effects of micro ultrafiltration chelating film adsorption and nanofiltration film interception, and direct discharge and reuse of waste water containing high-concentration heavy metal and phosphate pollutants after treatment are guaranteed.

The invention belongs to a method and system for self-cleaning water-saving type comprehensive vehicle washing for a civil construction site. The method comprises the steps of foundation ditch precipitation well and drainage ditch system construction, cofferdam pool construction, construction of a wheel washing machine base, a water storage pool, a wheel washing pool, a filtering pool and a settling pool and the like. The system comprises the wheel washing pool used for conducting primary cleaning on tires of a muck vehicle and sludge on a vehicle body, the wheel washing machine base, a wheel washing machine, a foundation ditch precipitation well, a foundation ditch drainage ditch, a cofferdam pool, the water storage pool, the filtering pool and the settling pool. The method and system for self-cleaning water-saving type comprehensive vehicle washing for the civil construction site have the advantages that the method and structure are novel and simple, the vehicle washing efficiency is high, the vehicle washing effect is good, and environment beautifying, energy conservation, environment protection and water recovery circulation utilization are good.

The invention discloses a sewage treatment system which comprises a collection tank, a biogas tank, a residue discharge tank and a biogas liquid collection tank; the biogas tank, which is a closed tank, is connected with the collection tank through a feed opening and has an impervious layer laid at the bottom; excreta, sewage or the like is placed in the methane tank and automatically form a biogas residue layer, a biogas liquid layer and a biogas layer after fermenting in the biogas tank, and a residue discharge opening, a liquid outlet and a gas collecting opening, which are communicated with the biogas residue layer, the biogas liquid layer and the biogas layer respectively, are arranged at the periphery of the biogas tank; the residue discharge tank is communicated with the residue discharge opening through a pipeline; the biogas liquid collection tank is communicated with the biogas tank through the liquid outlet; a biogas liquid purification system is connected with the biogas liquid collection tank. According to the sewage treatment system provided by the invention, biogas, biogas liquid and biogas residue, which are produced through centralized processing of sewage, are utilized effectively, so that all-around utilization of sewage can be realized; meanwhile, water and residue can be separated automatically through reasonable pipeline design, the sewage utilization rate is high, the engineering construction cost is low, the economic benefit is high, and large scale popularization can be performed easily.

The invention relates to the technical field of civil engineering, and especially relates to a composite steel pipe UHPC damping column pier. The composite steel pipe UHPC damping column pier is composed of an external steel pipe, an internal steel pipe, an UHPC layer and a rubber concrete layer; the internal steel pipe is sleeved in the external steel pipe, a part between the inner wall of the external steel pipe and the outer wall of the internal steel pipe is filled with the UHPC layer, and an internal part of the internal steel pipe is filled with the rubber concrete layer. The composite steel pipe UHPC damping column pier uses the advantages of steel pipe, UHPC and the rubber concrete, can better solve the anticorrosion problem of the steel pipe concrete, increases the endurance of amember, reduces the life-cycle cost of the member, and prolongs the life period of the member; the damping column pier has the advantages of energy saving and environmental protection, accords with continuous development requirement of green building idea and building industry; the member has the advantages of large carrying capacity reserve, good ductility, seismic performance and fatigue resistance, excellent shock resistance, and good damping performance, and has excellent seismic performance and good damping capability.

The invention discloses a method for verifying applicability of reactor physical computation programs. The method includes 1, analyzing sensitivity of existing critical experiment systems and novel nuclear reactor systems to obtain relative sensitivity coefficient vectors of effective multiplication coefficients; 2, computing correlation coefficients of the various critical experiment systems and the novel nuclear reactor systems and selecting the critical experiment systems meeting requirements of similarity limit; 3, computing relative adjustment amounts of multi-group cross sections to minimize integral deviation between computation results of Monte-Carlo programs for the effective multiplication coefficients of the selected critical experiment systems and measurement results; 4, adjusting computation results of Monte-Carlo programs for the effective multiplication coefficients of the novel nuclear reactor systems and utilizing the computation results as the optimal estimation values of the 'measurement results'. The relative sensitivity coefficient vectors of the effective multiplication coefficients are related to the multi-group cross sections. The method can be used for verifying the applicability of the to-be-verified nuclear reactor physical computation programs to designing and analyzing the novel nuclear reactor systems.

The invention discloses a device and a technology for manufacturing prefabricated components of curved-surface cement products for a building, and belongs to the field of quick and flexible manufacturing of three-dimensional curved-surface products of the building. The technology comprises the following steps of reading a curved-surface digital module; generating a three-dimensional coordinate data group; adjusting the space position of a supporting and positioning unit array according to coordinate data; adjusting the shape of a curved surface of an elastic curved-surface form board above the supporting and positioning unit array; directly and continuously spraying the elastic curved-surface form board of which the shape is adjusted by using cement slurry; resetting the supporting and positioning unit array; and separating the solidified prefabricated components of the curved-surface cement products from the elastic curved-surface form board. By the device and the technology for manufacturing the prefabricated components of the curved-surface cement products for the building, manual operation on the existing prefabricated components of the curved-surface cement products for the building is greatly reduced, the working environment of architectural engineers is greatly improved, the traditional heavy tools, the traditional models and the traditional molds are omitted, and digitization and automation of curved-surface design and curved-surface construction of the building are realized.

The invention discloses a method for preparing a lightweight high-strength cast-in-place concrete partition wall by using building waste, wherein the raw materials comprise, by weight, 65-95% of building waste sand powder, 3-20% of cement, 0.1-5% of a foaming agent, 0.1-5% of a concrete waterproofing agent, 0.1-5% of a concrete additive, and 0.1-5% of fiber. According to the present invention, thepartition wall is prepared by using the disassembly-free cast-in-place method, has advantages of light weight, high strength, water resistance, impermeability, good shock resistance and good integrity, and can improve the construction efficiency and reduce the construction cost; after the casting, the partition wall is flat and smooth without the coating with mortar; and the cast-in-place foam concrete comprises Portland cement or ordinary Portland cement, building waste regenerated sand powder, concrete foaming agent, concrete waterproofing agent and the like.

The present invention discloses a rapid installation method of a crane light rail sliding conducting wire. According to the present invention, according to the load of an installed and debugged crane, a temporary crane power supply electric cable is laid so as to ensure normal operation of the crane; a light rail sliding conducting wire to be installed is lifted onto a position below the installation position by using the crane; one end of a lifting belt is fixed on a crane small hook, the other end of the lifting belt contacts the ground surface, and the height of the crane small hook is adjusted before fixing the lifting belt so as to make the crane small hook do not affect the lifting and the installing of the light rail sliding conducting wire during the lifting operation; and an operation platform is built on the crane current collector maintenance hanging cage side surface close to the sliding conducting wire bracket, and can not contact the crane beam and the sliding conducting wire bracket. The method of the present invention has the following advantages that: the rapid installation construction progress of the crane light rail sliding conducting wire is accelerated, the safety and the reliability are provided, the influential factors are less, and the economic benefits are high.

The invention discloses a light rail elevated prefabricated box girder erection construction device and a construction method thereof. A zero column is fixed to a front pier column support cushion through a zero column adjustment section, and the top end of the zero column is provided with a zero column rotating seat. A first column transverse moving rail is arranged on the position, adjacent to the zero column adjustment section, of the front pier column support cushion, and a first column is erected on the first column transverse moving rail through a first column transverse moving mechanism. A second column transverse moving rail is arranged at the front end of an erected prefabricated box girder, and a second column is erected on the second column transverse moving rail through a second column transverse moving mechanism. A third column is erected in the middle of the erected prefabricated box girder through a third column hydraulic system. The zero column and the first column aresupported at the front end of a device arm, the second column is supported in the middle of the device arm, and the third column is supported at the tail end of the device arm. A front hanging beam trolley and a rear hanging beam trolley are connected with the device arm in a hanging mode. The construction requirement can be met only by correspondingly easily adjusting the bridging construction method, under the premise that construction safety is guaranteed, the construction schedule is accelerated, and the construction cost is reduced.

The invention discloses a kilometer-depth L-shaped ground pre-grouting drilling tool assembly applied to hole drilling, and a hole drilling process which is a kilometer-depth L-shaped ground pre-grouting hole drilling process. The kilometer-depth L-shaped ground pre-grouting hole-drilling drilling process comprises straight hole section drilling, whipstocking section drilling and horizontal section drilling, wherein the whipstocking section drilling comprises whipstocking section drilling of a deviation angle being equal to or larger than 45 degrees and whipstocking section drilling of a deviation angle being equal to or smaller than 45 degrees; during the whipstocking section drilling, on the premise that the build-up rate meets a design requirement, the drilling tool assembly is exchanged and composite drilling of 2m is performed after each drilling of the length of one single drill pipe is performed; when each drilling of the length of 2-3 drill pipe stands or pure drilling over 24 hours is performed, short trip of 10-15 drill pipe stands is completed. According to the kilometer-depth L-shaped ground pre-grouting drilling tool assembly applied to hole drilling and the hole drilling process, kilometer-depth shaft horizontal drift surrounding rock modified ground pre-grouting hole-drilling construction requirements are met, problems that stone dust up-hole resistance is large, trip difficulty is large, drill pipe sticking and hole collapse occur and the like when hole drilling is performed in a horizontal oriented section are solved, and fatigue failure to a drilling tool due to stress and strain under a drilling pipe rotation condition is reduced.

Earth and rockfill concrete core wall asphalt concrete and a paving method thereof break through the limitation to the maximal aperture of core wall asphalt concrete coarse aggregate in the prior art; the specific paving method is used for assisting, so the machining efficiency of coarse aggregate is greatly improved, the use level of asphalt is reduced and the engineering building and construction cost is reduced.

The invention relates to a crack-resistant concrete mix. The concrete mix comprises, by weight, 286 to 290 parts of Portland cement, 430 to 450 parts of fine sand, 250 to 270 parts of medium coarse sand, 1070 to 1080 parts of cobblestone, 28 to 32 parts of fly ash, 58 to 62 parts of mineral powder, 130 to 135 parts of water, 7.6 to 7.9 parts of a pumping agent, 0.9 to 1.8 parts of polypropylene reticular fibers, 24 to 26 parts of an air-entraining and water-reducing agent, and 4.5 to 5 parts of a crack-resistant agent. According to the invention, aggregate grading is optimized, a sand rate and a water-cement ratio are controlled, and the superfine polypropylene reticular fibers are added, so organic combination of the superfine polypropylene reticular fibers with the fine sand is realized, bonding between the fine sand and other ingredients is improved, the problem of reduction in strength, impermeability, durability, crack resistance and workability during preparation of concrete from ultrafine sand is effectively overcome, and cost for engineering construction is substantially reduced; meanwhile, the air-entraining and water-reducing agent and the crack-resistant agent are used so as to improve the crack resistance and freezing-and-thawing resistance of concrete.

The invention relates to an offshore wind power generation set horizontally-assembling and integrally-overturning-and-erecting installation system which is characterized by comprising a hoisting system, a draught fan, a tower tube and a supporting platform arranged below a wharf, the hoisting system, the draught fan and the tower tube are arranged on the wharf, a draught fan tower tube erecting device is further arranged on the wharf, and the erecting device comprises a ballasting system detachably mounted on the bottom of the draught fan tower tube and an overturning device arranged beside the wharf. The method comprises the steps that the draught fan is horizontally assembled and then moved to a position beside the wharf, the draught fan tower tube is made to be perpendicular to the wharf, and then the draught fan tower tube is erected. By the adoption of the structure, draught fan assembly can be achieved quickly and safely, the influence of natural conditions such as wind and other weather conditions is small, construction is convenient, overturning speed is high, and the tower tube can be both overturned and placed flat. The technology is small in influence on the surrounding environment, safe, and low in engineering construction cost.

The invention discloses an intelligent visualization system and method for a constructional engineering construction standard atlas based on Unity 3D. The invention belongs to the field of intelligentbuildings, the technical problem to be solved by the invention is how to convert a traditional 2D paper standard specification atlas into a building engineering construction standard atlas which is three-dimensional, visual, intelligent, interactive and easy to learn. According to the technical scheme, the system comprises a three-dimensional visualization unit and an intelligent interaction unit. According to the method, equal-proportion reduction modeling is carried out on the content described by a planar construction drawing set by utilizing a BIM technology, and colors of different 3D components forming the model are designed and distinguished by referring to a real object; importing the model into a Unity 3D engine, packaging the model into an APK, and exporting the APK to a mobileterminal screen for display, thereby realizing visualization of a construction standard atlas; a UI interface is designed on the basis of a visual interface, free control over the model based on a touch control mobile terminal screen is achieved, and meanwhile ternary information linkage intelligent teaching is achieved based on a touch control screen.