54results about How to "Fast construction process" patented technology

The invention discloses an anchoring structure for a liquid-injection corrosion-resistant anchor rod or anchor cable and a construction method thereof. The anchoring structure comprises a resin end-anchored anchor rod or anchor cable body arranged in an anchor hole, wherein a grouting-stop plug is also arranged at the opening of the anchor hole; an anchor rod head or an anchor cable head is exposed out of the anchor hole from the plug hole of the grouting-stop plug; the grouting-stop plug is also provided with two plug holes; a liquid injection nozzle is inserted into one plug hole and chemical grout is filled into the anchor hole through the liquid injection nozzle; an exhaust pipe with two open ends is inserted into the other plug hole; a check-valve ball and a return spring are arranged in the liquid injection nozzle; a locking slot connected with grouting equipment is reserved on the peripheral surface of the liquid injection nozzle; the length of the exhaust pipe is equivalent to that of the end-anchored anchor rod or anchor cable; and exhaust holes are reserved on the peripheral surface of the exhaust pipe close to the bottom of a drilled hole. The anchoring structure solves the problem of sealing water and preventing corrosion of anchor rod holes at the positions such as an arch part and the like, not only can serve as permanent support, but also can serve as temporary support.

The invention discloses a construction process for the reclamation by the hydraulic filling of silt and a device thereof. The device comprises a solidification treatment system A and a paving system B for improved slurry, wherein the A comprises a pumping device, an impurity screening device, a solidification agent storage device, a solidification agent conveying device, a compressed air conveying device and a mixed slurry stirring and conveying device; the B comprises a connecting pipe section, a hose or belt conveyer and a bearing and moving device. The construction flow comprises the following steps of: (1) filling the silt slurry into a filling region or sedimentation tank so as to form a stacked layer of thick silt slurry; (2) pumping the thick silt slurry with the pumping device, conveying the solidification agent into the thick silt slurry at the same time, and mixing the thick silt slurry and the solidification agent in a pipe in front of or behind a pump so as to form the mixed slurry; (3) conveying the mixed slurry to the stirring and conveying device to form the improved slurry; (4) conveying the improved slurry out to the paving system B through the connecting pipe section; and (5) laying the improved slurry to specified thickness by the paving system B. The device is characterized by fast, high-efficiency, simple and convenient operation.

The invention discloses a conveying belt change method for a conveyor. The conveying belt change method for the conveyor includes that mounting a draft gear near the conveyor, disconnecting an old conveying belt on the conveyor, connecting one broke end with the draft gear and connecting the other broke end to one end of a new conveyor, drafting the old conveying belt through the draft gear to drag out the old conveying belt from the conveyor gradually, making the new conveying belt enter the conveyor gradually and lay in the conveyor when dragging the old conveyor. The conveying belt change method for the conveyor is agile to operate and has high feasibility, scientificity and adaptivity. Because the new conveying belt used for changing the old conveying belt can be connected integrally or segmentally in advance, the construction link is little, the construction is finished easily, quickly and conveniently, and the safety is improved greatly.

The invention discloses a space positioning control method of a reverse arc wall template. The method comprises the steps of determining a main ridge structure, wherein a main ridge is of a welded arc-shaped H section steel structure, a welded arc-shaped H section steel flange is parallel to a reverse arc wall, and the whole welded arc-shaped H section steel is bent to form an arc shape in the length direction and corresponds to an arc formed by the vertical section of the reverse arc wall; dividing the whole formed main ridge into a plurality of identical sections; fixedly mounting the lowermost sections of the main ridge on the outer side of the reverse arc wall at equal intervals on concrete ground; sequentially mounting a batten, a horizontal back ridge, a plywood and the like on an upper flange side of the main ridge; arranging a frame body on a lower flange side of the main ridge, and horizontally and vertically supporting the main ridge by virtue of connection between the frame body and the lower flange. According to the method, the strength can be guaranteed, the construction difficulty can be reduced, the cost is low, and therefore the three-dimensional space size of a pouring concrete reverse arc wall structure is guaranteed.

The invention discloses a supporting method for a primary support of an underground excavated chamber. The supporting method for the primary support of the underground excavated chamber comprises A, arranging rectangular steel pipes inside the underground excavated chamber, inserting profile steel into the rectangular steel pipes and connecting the rectangular steel pipes with a primary supporting steel frame through steel base plates; B, paving a water proof layer on a whole section of the primary support after sectional primary supports of the underground chamber section are formed into a cross-shaped temporary steel support; C, colligating secondary lining reinforcing bars, reserving construction space for a rear covered water proof layer on the peripheries of the rectangular steel pipes and pouring concrete to form into an underground chamber full-section reinforced concrete structure; D, pulling out the temporary supporting profile steel in the rectangular steel pipes, pouring concrete inside the steel pipes and covering the water proof layer; E, pouring concrete in the reserved construction space of the rear covered water proof layer. The supporting method for the primary support for the underground excavated chamber has the advantages of being few, rapid and simple in construction process and saving construction periods.

The invention provides a construction method for forming a pile through rotary digging of a pile casing. The construction method comprises the following construction processes of site leveling, pay-off locating, drilling machine placement, soil drilling, steel casing construction, further soil drilling, rock stratum drilling, sediment cleaning, pore-forming acceptance check, drilling machine displacement, reinforcement cage installation, conduit installation, concrete pouring, pile casing lifting while pouring, pulling out of the pile casing after pouring, and pile inspection. By adopting fully mechanized construction, the construction method has the advantages of being high in construction speed, low in construction cost, safe, reliable and stale in quality.

The invention relates to a self-migration rust inhibitor and its preparation method. The self-migration rust inhibitor, which is a novel rust inhibitor product developed by the inventor, has very strong penetration and migration capability, can migrate from the surface layer of asphalt concretes to the surface of steel bars inside cement concretes, and has remarkable rust-resistant effect. The main components of the self-migration rust inhibitor are sodium molybdate, diethylenetriamine and the like. The rust inhibitor for steel bars has no adverse impact on concrete properties, has high-efficient steel bar rust-resistant performance, and can be widely applied in new reinforced concrete structures of sea port engineering, coastal buildings, civil buildings and the like. By the usage of the self-migration rust inhibitor, the service life of steel bars can be substantially raised, the maintenance period of roads and bridges can be prolonged, and the engineering cost can be reduced.

The invention discloses a screeding machine. The screeding machine is characterized by comprising a bottom plate, a fixed tubular product and a movable tubular product, wherein the bottom plate is provided with a horizon adjusting device and a length measuring tool; the fixed tubular product and movable tubular product are vertically arranged at the bottom plate, the upside and downside of the fixed tubular product are connected with the movable tubular product through horizontal adjusting devices, a telescopic measuring tool is arranged at each of the upper and lower ends of the movable tubular product, and the telescopic measuring tools are vertical to the movable tubular product. The screeding machine does not require high technology, and the screeding construction flow is easy and convenient to perform. The screeding machine omits a step of preparing a cement block and avoids accumulated error, the perpendicularity and flatness of the cement ribs of the wall are easy to unify, and the construction efficiency and quality are obviously improved.

The invention relates to a construction method based on a shield method for an anti-seepage anticorrosion sewage pipe segment lining. The method comprises the following steps that (a) holes in shield segments and gaps between the segments are blocked through epoxy resin; (b) the inner cambered faces of the shield segments are polished to expose inner pores of the shield segments; and (c) polyaniline/epoxy resin mixed coating is sprayed on the inner cambered faces of the shield segments and cured to form protecting coatings. Through the construction steps of epoxy resin blocking, shield segment inner cambered face polishing and protecting coating forming through curing, the construction process is more economical, simpler and rapider, the effective utilized area in pipes is increased, flow resistance of the coatings to sewage is smaller, and the pollution discharge speed is increased. In addition, the protecting coatings have excellent film-forming performance and corrosion resistance and can effectively resist corrosion of acid, alkali and salts in the sewage pipes to the reinforced concrete segments.

The invention provides a simple steel staircase, which comprises four parts: a fulcrum structure, a main keel of the staircase, a reinforcement structure of the main keel of the staircase and steel plate steps of the staircase. The invention solves key problems such as fixing the fulcrum of the stair keel, mechanical interpretation and force transformation, so that the overall state of the stair can be optimized, so as to achieve the most basic structural safety and the most important aesthetic effect.

The invention belongs to the field of underground construction, and particularly relates to a prestressed post-inserted composite anchor cable uplift pile and a preparation method thereof. The upliftpile comprises an uplift pile composite reinforcement cage, a composite anchor cable and a filler, wherein the uplift pile composite reinforcement cage comprises an uplift pile cage outer wall and anuplift pile cage inner wall; the composite anchor cable is arranged between the uplift pile cage outer wall and the uplift pile cage inner wall, and consists of an isolation body and an uplift anchorcable arranged in the isolation body; the isolation body isolates a corrosive from the uplift anchor cable; and a steel plate anchoring end is arranged at the lowermost side, and is connected with theisolation body. The uplift pile has the advantages of good overall performance, high bearing capacity, no mud pollution, low manufacturing cost, corrosion resistance and high construction speed; andthe upper part of a pile body is always located in a pressed state to prevent cracks.

The invention discloses a ribbed rockfill retaining wall structure with a compound foundation and a construction method thereof. The ribbed rockfill retaining wall structure comprises the compound foundation (1), a rockfill retaining wall (2), a geogrid (3), a reverse filtering layer (4) and a filling body (5), wherein the compound foundation (1) is located underground and composed of a pluralityof vibroflotation crushed stone piles (1.1); the rockfill retaining wall (2) is located above the compound foundation (1); the filling body (5) is arranged on the inner side of the rockfill retainingwall (2); the geogrid (3) is arranged on the lower portion of the filling body (5); and the reverse filtering layer (4) is arranged between the rockfill retaining wall (2) and the geogrid (3). By means of the ribbed rockfill retaining wall structure with the compound foundation and the construction method, the defect that a traditional retaining wall structure cannot meet the stability requirementof the retaining wall structure and a filling body behind a retaining wall in the prior art is overcome, and the ribbed rockfill retaining wall structure with the compound foundation and the construction method have the advantages of easy and convenient construction, high construction speed and low wall manufacturing cost.

The invention relates to a thermal insulation structure for a building and a construction technology. The construction technology comprises the steps that an insulating layer is nailed to a wall body basic layer, then a special reinforcing grid is supported by preset special buckles, the special reinforcing grid is pressed on and covers the insulating layer through the assisting of expansion anchor bolts, and the special reinforcing grid and the insulating layer are fixed to the wall body basic layer, so that all the loads of the insulating layer and the externally-hung special reinforcing grid are completely borne by the expansion anchor bolts and transmitted to the wall body basic layer; and scraping operation, covering operation and leveling operation are conducted on the externally-hung special reinforcing grid through thermal-insulating particle slurry. The thermal insulation structure for the building and the construction technology can effectively solve the technical problems that combination between a conventional exterior wall external insulation system and a basic layer wall body is poor, water seepage easily happens, and surface treatment is difficult. In addition, due to the fact that various materials adopted by the thermal insulation structure for the building and the construction technology are incombustible materials with the fireproof grade higher than A, the fire prevention hidden danger of a conventional exterior wall external insulation material is eliminated.

The invention discloses a method for repairing an overall non-excavation sewage pipe through hot water overturning curing. The method comprises the steps that firstly, the sewage pipe is cleaned and detected, then a felt-made hose completely soaked in thermosetting resin is conveyed a to-be-repaired pipe which is thoroughly cleaned, and finally hot water is introduced for curing. By adopting a hotwater overturning curing technology, the hose is attached to the inner wall of the damaged sewage pipe, excavation is not needed during construction of the pipe, and no influence on the traffic environment of the city is caused. According to the method, the speed of the construction technology is high, the cost can be effectively lowered, and the construction period is shortened.

The invention discloses a prefabricated beam fast-dismounting type line production steel template. The steel template comprises longitudinally-distributed longitudinal sliding mechanisms; transverse sliding mechanisms are arranged on one side above the longitudinal sliding mechanisms, vertical lifting mechanisms are arranged on the transverse sliding mechanisms; a prefabricated beam template supporting steel frame is arranged on each vertical lifting mechanism; a finish rolling threaded steel pair pull rod is jointly arranged on the prefabricated beam template supporting steel frame which is in mirror image distribution; the prefabricated beams are arranged between the longitudinal sliding mechanisms, the transverse sliding mechanisms, the vertical lifting mechanisms and the prefabricatedbeam template supporting steel frame which are mirror distributed. According to the prefabricated beam fast-dismounting type line production steel template, the whole template security and disassemblyprocess of the prefabricated beam fast-dismounting type line production steel template adopts conventional electric mechanization, so that a large amount of labor is saved, meanwhile, the productionefficiency and the safety are greatly improved, meanwhile, the single-sleeve template can meet the template requirements of all the pedestals of the through-length guide rail, the purchasing cost of the template is saved, the integrity of the template is good, repeated dismounting and mounting are not needed after the construction is started, and the construction process is compact and rapid.