1150results about How to "Reduce construction procedures" patented technology

The invention relates to a functional real stone paint building exterior wall coating material and a preparation method thereof. The functional real stone paint building exterior wall coating material is composed of the following components in parts by weight: deionized water, hydroxyethyl cellulose, an aqueous multifunctional addition agent, a real stone paint special silicone acrylic emulsion, a coalescing agent, an aqueous defoamer, a sterilizing corrosion remover, a hydrophobing agent and natural colored sand. The functional real stone paint building exterior wall coating material prepared by the invention is formed with one construction process and strong in covering power with surface covering-free performance, simultaneously is excellent in water resistance, stain resistance and weather resistance performance.

The invention discloses a method for constructing an integrated road bed of a track traffic tunnel, which is a supporting frame method for short. Firstly, a finished track panel assembled on a base is hoisted to the constructed tunnel; and the track panel of sleepers with different forms is born through adopting a supporting frame of a lower bearing type track panel; secondly, the track panel in the construction working face is hoisted to the designed elevation; the supporting frame of the track panel is mounted to support the track panel; a transverse supporting lever is utilized to approximately fix the direction of the track panel; and finally, according to fiducial mark, the elevation of track surface, the direction of the track, level and height are adjusted to the designed positions; after the binding and welding of concrete reinforcing bars and the erection of a template of the road bed are sequentially completed, and the integrated road bed is finally subjected to concrete pouring to obtain the integrated road bed; and the steps are sequentially advanced to complete the whole construction. The method reduces control links and material waste, improves construction schedule, ensures construction quality and is mainly used for the structural construction of undergrounds, light rails, tunnels, bridges, large-scale vehicle fields and other integrated road beds.

The invention discloses a method for rapidly digging 'three soft' low permeability and high gas coal layer, which comprises the steps of arranging a stone head in a bottom plate rock under the coal layer, and constructing pre-extracted penetrating drill holes of gas in the bottom plate rock layer and pulling the bit back to the bottom plate of the coal layer after the bit penetrates the coal layer, and punching the drill holes by pressure water with the depth of the punching holes being less than or equal to three meters, and the control radius of the punching holes being from two to six meters to realize continuously, draining gas in the holes, and stopping draining while the gas draining amount is at 0.1 cubic meter per hour; injecting water to the coal layer by using the drained gas drill holes, with water injection pressure controlled between ten to fifteen Mpa, and stopping water injection when the water injection effect reaches the demands of construction in coal layer; and draining goaf by the drill holes after extraction in mining face. The digging method increases the resolving speed of the 'three soft' low permeability coal layer gas, improves the gas draining effect and realizes the low gas construction in the high gas coal layer and one hole for three purposes, not only ensures the safety during construction, but also improves the digging speed in the roadway maximally.

A hollow microsphere masonry dedicated thermal insulation mortar and a dedicated surface mortar, especially a wall self-insulation system-matching hollow microsphere masonry dedicated thermal insulation mortar and a dedicated surface mortar, relate to a constuction energy-saving technology. The hollow microsphere masonry dedicated thermal insulation mortar comprises, by weight, 20-30% of special cement, 2-6% of coal ash, 20-35% of quartz sand, 5-8% of master batch, 35-45% of hollow microphere, and 3-6% of coarse whiting; and the hollow microsphere masonry dedicated surface mortar comprises, by weight, 28-40% of ordinary Portland cement, 3-6% of coal ash, 7-10% polymer, 40-55% of quartz sand, 10-16% of hollow microsphere, and 1-3% of coarse whiting. With a low heat conductivity coefficient, excellent thermal insulation effect, high compression strength, high bonding strength, low contractibility, environment-friendly and fire-proof properties and notable composite economic results, the wall self-insulation system-matching dedicated thermal insulation mortar and a dedicated surface mortar provided in the invention can be widely popularized and used in wall self-insulation system buildings.

The present invention relates to a large-span tunnel excavation method for upper soft and lower hard compound strata. The present invention aims at providing a large-span tunnel excavation method for upper soft and lower hard compound strata so as to ensure large-span tunnel construction safety for the upper soft and lower hard compound strata, accelerate the construction progress and shorten the construction period. The technical scheme is that a tunnel is divided into upper and lower steps for excavation by the method, and the steps are as follows: a, determining a boundary of the upper soft and lower hard strata of an excavation surface according to geological prospecting data; b, constructing the upper step by using the center diaphragm method; c, constructing the lower step by using the method of reserving core soil; d, lagging the lower step with 2-3m headings at two sides; e, arranging earthwork cloth and an EVA waterproof board on a surface of a lower step inverted arch preliminary bracing, and pouring an inverted arch second lining; and f, dismounting a center diaphragm temporary bracing of the upper step and a temporary inverted arch of the upper step with segments, and pouring a pavement lining close to a preliminary bracing of the upper step and preliminary bracings of the headings at the two sides of the lower step. The large-span tunnel excavation method is applied to the technical field of tunnel construction.

The invention provides a construction method of railway tunnel lining side wall concrete. Firstly concrete for an inverted arch and the inner part of the inverted arch is constructed, then sleepers are placed, and a lining trolley traveling track is laid; a lining trolley is moved to a place to be lined, molding boards are connected to the top of a gantry, and end of hydraulic oil cylinders and jacks at two sides; the side hydraulic oil cylinders at two sides are started to regulate the molding boards at two sides of the lining trolley to the design positions, and all side jacks are locked to fix the side molding boards; short side wall molding boards at two sides of a tunnel are respectively mounted, the upper end heads of the short side wall molding boards are connected with the lower ends of arc-shaped molding boards at two sides to form a molding board assembly, and the molding board assembly is mounted at one end of the jack on a water groove side wall to be mounted with one side of the short side wall molding board; and then the concrete is cast and lined, and the cast lined concrete is dismounted with the mold after reaching the strength of mold removal. The construction method reduces procedures and shortens the erection time, saves the construction cost, and enhances the structure of the tunnel lining side wall and improves the external quality.

The invention belongs to the technical field of building materials and particularly relates to an aerated concrete block and a preparation method thereof. The technical scheme is as follows: the aerated concrete block comprises the following components in parts by weight: 20-50 parts of cement, 20-55 parts of shale ash, 10-40 parts of mineral powder, 0.08-0.12 part of foam stabilizer, 0.5-3 parts of natural gypsum and 3-7 parts of hydrogen peroxide, wherein the ratio of water to material is 0.58-0.65. The heat self-preservation aerated concrete block prepared by the invention has the low volume weight of 200-500kg/m<3>, the heat conductivity coefficient of 0.06-0.12W/m.k and the compensative strength of 0.8-3MPa, and various indexes such as fire resistance, freezing resistance and the like of the aerated concrete block can be up to the national traditional autoclaved aerated concrete standard.

The invention discloses a mounting method of a stayed cable of a cable-stayed bridge. The mounting method comprises the following steps that an under-girder anchoring device is mounted on a main girder section; a tower-end anchoring device is mounted on a cable bent tower; a stayed cable outer protection sleeve is hoisted and lifted and laid with a preset angle, and the stayed cable outer protection sleeve is collinearly arranged with the under-girder anchoring device and the tower end anchoring device which are relative to the stayed cable anchor; steel stranded wires penetrate through the outer protection sleeve one by one from the tower end to the beam end, and the two ends of each steel stranded wire are anchored on the under-girder anchoring device and the tower end anchoring device correspondingly; and the stayed cable is integrally tensioned. According to the explosive-removing unmanned aerial vehicle, the steel stranded wires penetrate through the outer protection sleeve from top to bottom, so that in the hoisting process of the steel stranded wires, the needed tractive force is reduced, construction procedures are reduced, construction time is saved, and meanwhile, abrasion to the outer protection sleeve is reduced.

The invention discloses a coating process applying water-based paint to metal parts of construction machinery. The coating process is characterized in that water-based anti-corrosion priming paint and waterborne polyurethane texture finish paint are combined and used on base materials of the metal parts of the construction machinery. The coating process applying the water-based paint to the metal parts of the construction machinery enables the water-based paint to be correctly used for the coating of the metal parts of the construction machinery, not only solves harm and potential safety hazards brought about by a traditional coating process to a forklift, but also improves the protecting performance and the physical and chemical performance of the coating process, and prolongs the service life of the forklift.

The invention discloses a C200 strength-grade concrete for a formed steel concrete composite structure, which is composed of 473 parts of cement, 846 parts of fine aggregate, 1054 parts of coarse aggregate, 98.8 parts of water, 19.6 parts of concrete superplasticizer, 1.1 parts of defoaming agent, 84 parts of silicon powder, 123 parts of expanding agent, 7.2 parts of activator and 40 parts of expanding agent. The preparation method comprises the following steps: blending the concrete superplasticizer and activator into weighed water to obtain a mixture, sequentially adding the fine aggregate and 1/3 of the mixture into a stirrer according to parts by weight, and stirring; adding the coarse aggregate and 1/3 of the mixture, and stirring; adding the cement, expanding agent, silicon powder and fly ash, and stirring; and adding the defoaming agent and the rest of mixture, stirring and discharging. The concrete can obviously improve the bonding property between the formed steel and the concrete in a natural state, effectively displays the respective mechanical properties and the synergic working performance of the steel and concrete, greatly enhances the loading capacity, service performance and durability of the structural member, and has high volume stability and economical efficiency.

The invention relates to an exterior wall insulation construction method of composite cast-in-site concrete with non-reinforcing mesh polystyrene board, which can effectively solve the problems of the exterior walls with high quality, high speed, and low cost in the construction. The exterior wall insulation construction method is characterized in that: a flame retardant polystyrene board with concave and convex tooth sockets on one surface serves as the thermal insulation material for the cast-in-site concrete exterior wall; steel bars of the wall body are bundled; the polystyrene board is arranged on the outer side of the bundled steel bars of the wall body; an insulation board and a formwork are installed; the polystyrene board is penetrated by clips of the polystyrene board; the clips and the steel bars of the wall body are bundled and fixed by bundled iron wires; after the concrete is cast, dovetail grooves of the polystyrene board are fixedly combined with the concrete; after the formwork is removed, maintenance is carried out, and then repair and leveling are conducted through gelatin powder; after an anti-crack protection layer is coated and exterior wall putty is scraped, coating is made or face bricks of the exterior wall are constructed, so as to improve the application effect. As the polystyrene board and wall body are fixedly combined as a whole for once, the existing surface-sticking process for the insulation board and the wall body is omitted, thereby the construction procedure is reduced, the construction period is shortened, and the economic and social benefits are great.

The invention discloses concrete with strength grade of C140 used for a profile steel-concrete composite structure. The concrete is characterized by being prepared from cement, fine aggregate, coarse aggregate, water, a water reducing agent, an antifoaming agent, siliceous dust, coal ash(kg/m<3>) in a mixing proportion of 485:660:1,173:117:13:0.7:65:100. A preparation method of the concrete comprises the following steps of: adding the fine aggregate and the water in an amount of which is a half based on the total weight of the used water into a forced mixer according to the weight proportion in turn; uniformly stirring for 1 to 2 minutes; adding the coarse aggregate into the mixer; uniformly stirring for 2 to 4 minutes; adding the cement, the siliceous dust and the coal ash into the mixer; uniformly stirring for 2 to 3 minutes; adding the water reducing agent, the antifoaming agent and the rest water into the mixer; uniformly stirring for 2 to 5 minutes; and discharging to obtain a concrete mixture. The concrete can obviously improve the adhesive property between profile steel and the concrete in a natural state, effectively exert respective capacity and cooperative work performance of both materials, greatly improve the carrying capacity and performance of members, and improve the durability, high volume stability and economy of the members.

The invention provides a cast-in-place pile construction method using steel pipe column splicing piles. The method includes: a) forming pile holes and forming slurry protecting walls automatically during formation of the pile holes; b) making the steel pipe column splicing piles which comprise steel tubes and reinforcing cages, and fixing the bottom ends of the steel pipes to the top ends of the reinforcing cages; c) lifting and positioning the steel pipe column splicing piles in the pile holes; d) pouring concrete into the pile holes through injection pipes on the steel pipe column splicing piles; and e) filling soil between the steel pipe column splicing piles and pipe hole walls. With the filling pile construction method, unity of cast-in-place piles is improved during the construction process of underground engineering, so that pipe formation quality of the cast-in-place piles is improved, and construction processes of cast-in-place piles are decreased.

The invention relates to an outer thermal insulation wall with metal mesh reinforced polystyrene boards anchored by a mechanical fixing device. By utilizing the leveling and binding layer on the foundation wall, before the leveling layer is dried, the metal mesh reinforced boards for thermal insulation are bound on the leveling layer to perform the functions of auxiliary connection and stabilization, thereby ensuring the flatness of the polystyrene boards. Holes are drilled in the board surface, and the metal mesh reinforced polystyrene boards for thermal insulation are directly fixed on the foundation wall through plastic expansion anchor bolts, so that all the load on the outer thermal insulation system is completely borne by the fixing anchor bolts and transferred to the foundation structural wall. The organic combination of the anchor bolts and the reinforced polystyrene boards can perform the auxiliary stabilizing function on the load on the leveling layer of the wall. Therefore, the outer thermal insulation wall is especially suitable for outer thermal insulation energy-saving modification works on outer walls of buildings, and can well solve the technical problems of low bearing capacity and difficult surface treatment in the old foundation of the outer wall.

The invention discloses a mounting equipment car. The mounting equipment car consists of power equipment, a chassis, a car body, electric equipment and the like, and is characterized in that a first extension column 6, a second extension column 12, a third extension column 24 and a fourth extension column 43 are correspondingly mounted at the upper sections of inner cavities of stand columns at four corners of a box; the other end of each stand column is connected to the top of the box; the top of the box can be vertically lifted to lift equipment; an extension lifting crane is mounted at thetop in the box; more than one layers of cross beam support structures and drive connecting devices are mounted on the inner and outer sides of a channel between longitudinal components on the two sides of the box to form a rotary recovered movable plane support structure; the equipment can be carried on cross beams; the cross beams can be automatically recovered on the two sides of the box; and the section of the box is n-shaped. The mounting equipment car reduces the equipment mounting construction flow, removes various cranes, vehicles, forklifts and tools in traditional construction, once finishes lifting, transportation and installation on one car, achieves automatic control and precise installation, realizes mechanical equipment installation, and greatly improves the equipment mounting efficiency.

The invention belongs to the bridge technical field and relates to a deck type open shoulder arch bridge. The deck type open shoulder arch bridge comprises a main arch ring 1, upper spandrel arches 2, a bearing platform 3 and a pile foundation 4, wherein the upper spandrel arches 2 are arranged on both sides of the main arch ring 1, and arch feet of the main arch ring 1 are arranged in the bearing platform 3. The deck type open shoulder arch bridge further comprises a plurality of prestressed concrete pull-pressing rods 5. A prestressed wire 6 penetrates through each prestressed concrete pull-pressing rod 5, and two ends of the prestressed wire 6 are respectively anchored in the bearing platform 3 which is on the same side of the prestressed wire 6. The main arch ring 1, the pile foundation 4 and the prestressed concrete pull-pressing rods 5 are connected to form a whole through the bearing platform 3. Meanwhile, the invention provides a constructing method of the deck type open shoulder arch bridge. Prestressed steel beams in the prestressed concrete pull-pressing rods 5 can be once tensioned in place in constructing process, and no construction passageway is need to leave to conduct tension step-by-step.

One kind of compound heat preservation reinforced concrete integration construction structure and the construction craft, its foundation each one with buries in the concrete foundation from the laying aside steel, in the assembly wall and the floor section skeleton, with lays aside the section skeleton the steel buries in advance in the foundation a permanent connection; Its wall the steel bar coagulation dirt wall main body which first hands over by the polystyrene heat preservation wall template and the template interior bonds becomes, the polystyrene heat preservation wall template has two polystyrene heat preservations board parallel relative establishment, two between has two distinguishes to bury in advance pulls in its in steel skeleton combination ties becomes, under the polystyrene heat preservation board two side buddhist priest separately has the raised saw notch; Its floor because archery target heat preservation template and cast-in-place the steel bar layer of concrete duplicate synthesizes a body, keeps warm the template is passes long by the polystyrene thermal insulation material in sets at the section to become spongy the composition, keeps warm the template with cast-in-place the steel bar layer of concrete between has the concave-convex joint face. Compared to traditional construction working procedure few, time limit for a project short, construction cost low, the craft is simple, is suitable for much, the high-rise construction.

The present invention is the construction process of laying wide bore pipe into pipe canal and relates to one important pipeline construction step. The present invention features that during excavating pipe canal, one soil partition wall is preserved in each certain distance; the pipe is first hoisted with two pipe layers and settled on the partition walls, and the initial end of the pipe is lifted before the soil partition wall is dug out with excavator and then settled slowly into the pipe canal; and all the partition walls are dug out successively and the pipes are settled in the pipe canal. The construction process includes the main steps of: preparation, the first pipe canal excavation, shifting pipes and detection, the second pipe canal excavation, and laying the pipes. The main advantages includes using two pipe layers only, low cost, low power consumption, simplified construction process, short construction period, etc.

The invention discloses a coating process applying water-based paint to metal parts of engineering machinery. The coating process applying the water-based paint to the metal parts of the engineering machinery is characterized in that water-based anti-corrosion priming paint and waterborne polyurethane texture finish paint are combined and used on base materials of the metal parts of the engineering machinery. The coating process applying the water-based paint to the metal parts of the engineering machinery enables the water-based paint to be correctly used for the coating of the metal parts of the engineering machinery, and not only solves harm and potential safety hazards brought about by a traditional coating process to a forklift, but also improves the protecting performance and physical and chemical performance coating process, and prolongs the service life of the forklift.

The invention belongs to the technical field of building materials, and discloses novel heat-insulation dry powder mortar. The mortar consists of portland cement, fly ash, vitrified beads, floating beads, heavy calcium, cellulose, latex powder and the like. Compared with conventional heat-insulation mortar, the novel heat-insulation dry powder mortar provided by the invention has the advantages of high strength, light weight, high bond strength and the like.