321results about How to "Improve on-site construction efficiency" patented technology

The invention discloses a prestressed concrete two-way laminated slab and a manufacturing method thereof, which belong to the technical field of construction engineering. Its structure includes a prefabricated bottom plate, a laminated layer and a steel truss. The trusses are connected, and the laminated layer transverse steel bars and laminated layer longitudinal steel bars are arranged inside the laminated layer. The laminated layer longitudinal steel bars are fixed on the upper surface of the steel truss. The transverse prestressed reinforcement is arranged at equal intervals, the longitudinal prestressed reinforcement is arranged at equal intervals along the length direction, the longitudinal prestressed reinforcement is located above the transverse prestressed reinforcement, and multiple steel trusses are arranged at equal intervals along the width direction on the upper part of the prefabricated floor. The invention also discloses a manufacturing method of the laminated board. The invention has the characteristics of high overall rigidity of the laminated slab, good force bearing performance, two-way force transmission mechanism, no joints on the prefabricated bottom plate, reduced on-site support and formwork consumption, and improved construction speed and the like.

Disclosed is a windproof-type overall steel bracket mounting method. The windproof-type overall steel bracket mounting method includes: firstly, measuring basic parameters required when a windproof-type overall steel bracket is mounted on a specified position; secondly, establishing a model of the windproof-type overall steel bracket; thirdly, respectively calculating the position of a bearing wire, the dimension of a flat inclined bracket, a support position, a positioning pipe and parameters of relevant dimensions in a coordinate frame of the model; finally taking calculating results as the design dimension of the steel bracket and performing processing and mounting according to the design dimension. Point-to-point positioning of the coordinate frame is adopted, the parameters of connecting parts are taken into consideration, the dimensions and positions of the parts are accurately calculated out, the bracket is more accurate in dimension, success rate in mounting is guaranteed, time for on-site mounting and adjusting is greatly shortened, skylight point time is effectively utilized, and on-site construction efficiency is greatly improved.

The invention discloses a portable intelligent high-pressure grouting system and a grouting method of metamorphic concretes. The portable intelligent high-pressure grouting system comprises a pulp feeding barrel, a pulp pump and a grouting bar which are connected though pipelines. A grouting head in a tapered shape is arranged on the grouting bar. Circular grooves are formed in the upper portion of the grouting head and internally provided with grouting holes. The tail end of the grouting bar is connected with an electric hammer. The grouting method includes the steps such as grouting and backflowing. The portable intelligent high-pressure grouting system and the grouting method are applied to automatic construction of the metamorphic concretes, construction efficiency is improved, construction workers are fewer, and grouting quantity of the metamorphic concretes is saved.

The invention discloses a construction method of mass concrete of high-rise building foundations. According to the construction method, continuous construction is adopted for concrete construction, concrete is subject to segmental and layered casting and mechanical vibrating, and the temperature and the casting time are strictly controlled. The construction method is simple in technique, high in site construction efficiency, reliable in quality, short in construction period and low in labor intensity, the quality after construction reaches the design demands, and the thickness of casting layers is strictly controlled. Vibrators are arranged at multiple casting points to ensure density of the concrete. The opening temperature and the molding temperature of the concrete are strictly controlled so that shrinkage and closing of the concrete are effectively ensured. The concrete is vibrated in a fast inserting and slow stirring mode during casting so that holes caused by mixing of air during concrete casting are effectively prevented.

The invention discloses a complete set of tunnel mechanical equipment, which specifically refers to an excavation trolley (or an excavation gantry), a drainage and steel bar binding trolley, a liningtrolley, a spray maintenance trolley, a ditch cable trough trolley, an inverted arch self-propelled hydraulic trestle and a wet spray manipulator, referred to as five trolleys, one trestle and one wetspray machine. A construction organization method matched with the complete set of mechanical equipment comprises the following construction organization steps: S1, hole excavation; S2, initial support; S3, inverted arch lining; S4, arched wall lining; S5, ditch cable troughs and the complete set of mechanical equipment. The construction organization method is reasonable, effectively improves tunnel management effect, improves construction operation environment, ensures construction safety and quality, improves construction progress and is worthy of promotion.

The invention mainly discloses an integrated floor module and an assembling method thereof. The integrated floor module comprises a structure module of floor. Equipment system modules, ceiling joists and suspended ceiling boards are sequentially assembled on the lower surface of the structure module from inside to outside; a profiled steel sheet is installed on the upper surface of the structure module, concrete is poured to the upper surface of the profiled steel sheet on site, a floor surface layer is laid on the surface of the concrete, and a finished product of whole floor system is formed. The assembling method includes the steps that the floor system is prefabricated in a factory firstly, then the finished product of the floor system is carried to a construction site, and the floor system is quickly connected with on-site square columns. According to the integrated floor module and the assembling method, modular production of the floor system is achieved, convenience is brought to quick assembly, and industrialization, assembly and standardization of building industry are propelled.

The invention discloses a combined type steel pipe sheet of a connection channel at the position of a joint with a main tunnel and a construction method. The connection channel at the position of thejoint with the main tunnel adopts a combined steel pipe sheet, the combined type steel pipe sheet is that each steel pipe sheet is arranged to be two parts according to radian split bodies of the maintunnel at the corresponding circumferential positions, one part is a fixing pipe segment located in the connection channel, and the other part is a temporary pipe segment needing to be dismounted. Dismounting and mounting of the fixing pipe segment and the temporary pipe segment are achieved by utilizing direct bolts. The combined steel pipe sheet is adopted, dismounting and mounting are achievedthrough the direct bolts, cutting at a site is not needed any longer, the on-situ construction efficiency is improved greatly, and it is greatly beneficial for ensuring the project quality.

The invention relates to an assembly external wall heat insulation system and an assembly method of the assembly external wall heat insulation system, and belongs to the field of building external wall heat insulation. The assembly external wall heat insulation system mainly comprises a heat insulation material, a support seat, a keel, a wedge-shaped gasket, a heat insulation pad, a panel clamp element and an external wall panel, wherein the heat insulation material is connected to a wall body, the support seat is fixedly arranged on the wall body and is connected with the keel, and the panel clamp element is used for supporting the external wall panel and is connected with the keel. The assembly method comprises the following main steps that the support seat is fixedly arranged on the wall body, then, the heat insulation material is fixedly arranged on the wall body, the keel is fixedly arranged on the support seat, the panel clamp element and the external wall panel are installed, and then, gaps are sealed. The heat insulation material filling mode in the external wall heat insulation system can avoid the negative air pressure effect, the external wall heat insulation system can realize the horizontal, transverse and vertical three-dimensional adjustment in all angles, the panel installation position and the flatness are ensured, the field installation mode is adopted, the field construction efficiency can be improved, and the construction period is shortened.

The invention mainly discloses an assembling method of floor structural modules. Each floor structural module comprises a plurality of main beams, secondary beams and a plurality of box-type components, the main beams are connected to form an outer frame with the box-type components as unit connecting points, and the secondary beams are arranged in the outer frame defined by the main beams. The assembling method includes the steps that first, the structural modules are prefabricated in a factory; second, the finished structural modules are carried to a construction site, and the structural modules and on-site square columns are fast assembled and connected. According to the method, structural units for the floor modules are formed in the factory, welding is reduced, the quality of machining in the factory is improved, and the industrial degree of steel components is improved.

The invention discloses a method for constructing a cavity foundation of an elevator shaft foundation pit of a super high-rise building. According to the method for constructing the cavity foundation of the super high-rise building, slope arrangement and ejector anchor supporting are conducted on the periphery of mass concrete, so that a formwork is formed, a steel channel is arranged on a bed course to serve as a stirrup for supporting, so that it is guaranteed that a steel reinforcement framework does not deform, the size is accurate, concrete pouring construction is conducted twice, a bottom solid base plate is poured when the concrete pouring is conducted for the first time, and a cavity structure is poured when the concrete pouring is conducted for the second time. Heat preservation and maintenance are conducted after the concrete pouring is completed, so that the surface temperature is prevented from falling too quickly, and concrete cracks are prevented. Due to the adoption of the cavity design, the effective section of the concrete can be well reduced, temperature cracks are prevented from being generated, the self weight of the structure is low, the construction period is shortened, and materials are saved.

The invention provides a connection structure for a prefabricated integral bay window. The connection structure comprises a prefabricated integral bay window and a superposed beam and is characterizedin that the prefabricated integral bay window is integrally poured into a C-similar shape and comprises a top plate, a side wall and a bottom plate; the superposed beam comprises a prefabricated partand a cast-in-place part; the bottom surface of the bottom plate and the bottom surface of the prefabricated part are positioned on the same horizontal plane; the indoor side of the side wall is fixedly connected with the cast-in-place part through an upper connecting component; and the bottom plate is fixedly connected with the prefabricated part through a lower connecting component. When the connection structure for the prefabricated integral bay window in the scheme is produced and manufactured, no reinforcing steel bars extend out of the edge part of the prefabricated integral bay window,a production module is simple, demoulding efficiency is high, and a mould turnover frequency is improved. In a transportation stage, a loading rate can be improved; wet operations in an assembling field are few, form erection is avoided, field construction efficiency is improved, and construction cost is lowered; an error-tolerant rate of field assembling is high, the position of the prefabricated integral bay window can be regulated in field through ways, including gaskets, bolts, mortar, bed mortar and the like, and the connection structure disclosed by the invention is convenient for fieldinstallation and regulation.

The invention discloses an on-site formwork-erecting-free longitudinal and transverse wall connecting structure for superposed shear walls and a construction process. Prefabricated concrete wall plates of prefabricated walls extend towards a joint position to form a closed cavity, a vertical post-pouring section is arranged in the closed cavity, horizontal connecting steel bars are arranged in a penetrating mode in advance, the horizontal connecting steel bars in the cavity are integrally moved to a designed position by means of a special shifting rod, and post-pouring concrete is poured to realize connection of the longitudinal and transverse prefabricated walls. According to the on-site formwork-erecting-free longitudinal and transverse wall connecting structure, the construction on-siteformwork-erecting-free of the longitudinal and transverse prefabricated wall connecting joint position vertical post-pouring section of the composite shear wall structure can be achieved, the site construction efficiency can be obviously improved, meanwhile, an edge component area with the stirrup restraining effect basically equal to that of the cast-in-place shear wall can be formed at the connecting joint position, the length of the horizontal connecting steel bars stretching into the cavity of the prefabricated walls can meet the lap joint force transmission requirement, the connecting integrity is high, and the structure is suitable for a high-layer superposed shear wall structure with the high seismic fortification requirement.

The invention discloses a high-voltage gas immersed termination mounting and positioning structure. A pluggable high-voltage gas immersed termination (GIS) comprises a high-voltage cable, an epoxy sleeve, an inner insulator and a plugging and unplugging mechanism. The structure is characterized in that: three groups of sliding pins and springs are radially uniformly distributed on the end part of a moving contact in the plugging and unplugging mechanism; three sliding chutes are axially formed on the inner hole sidewall of an upper electrode of the epoxy sleeve; the roots of the three sliding chutes are radially provided with a positioning groove respectively; and the three groups of sliding pins and springs of the end part of the moving contact are assembled, disassembled, moved and positioned by the three corresponding sliding chutes and the corresponding positioning grooves. The structure realizes the function of plugging and unplugging the cable relative to the epoxy sleeve, improves the positioning accuracy of the cable, simplifies a mounting process and improves the construction efficiency.

The invention provides a green upgrading structure of concrete pavement and a reconstruction method thereof. The A reconstruction method comprises the following steps: concrete pavement treatment, concrete pavement joint treatment, reinforcing bar mesh layer laying, filling and excavating partition box laying, recycling concrete layer construction, upper reinforcement layer and partition mortar layer construction, water-proof base layer and asphalt mixture surface layer construction, filling and excavating partition box taking out and draining and storing water partition belt laying. The method provided by the invention realizes the full utilization of the milling material of the concrete pavement and saves the building resources. At the same time, in order to prevent the crack from reflecting, the upper reinforced layer and the spacer mortar layer can effectively prevent the crack from blocking the reflection channel and enhance the integrity of the pavement structure. It reduces thedifficulty of setting up the water drainage and storage partition belt in the later period and improves the compaction effect of the pavement structure. The utility model meets the needs of storing and utilizing rainwater, greening construction of partition belt and assembling installation of curb stone, and effectively improves the construction efficiency on site.

The invention relates to a one-piece large template shear wall and a construction method. A bottom support adjusting body is arranged between a bottom support baffle and a bottom support control body;an elevated bottom plate is arranged on an elevated support beam, and an elevated ladder and an elevated supporting column are arranged on the elevated bottom plate; the vertical position of a stirrup supporting plate is controlled through a vertical plate limiting plate, and vertical longitudinal ribs are tightly connected to a longitudinal rib limiting plate through a longitudinal rib baffle; the stiffness of the vertical longitudinal ribs is improved through a control body supporting plate; the verticality of inner and outer templates is corrected by supporting plate adjusting bolts, and the tightness between the inner and outer templates and a supporting slab is adjusted by pressing rod squeezing bolts; template corner beads are arranged at the bottom ends of the inner and outer templates, and connecting square strips are arranged at vertical joints; and the vertical position of a support frame column is controlled by a unit support body, and the spatial position of the inner template is controlled by a frame plate positioning rod and a support frame plate. The one-piece large template shear wall and the construction method can improve the binding quality of a reinforcing cageand reduce the supporting and positioning difficulty of the templates.

The invention discloses a wind power tower drum foundation ring ribbed beam type foundation based on a combined structure, and relates to the technical field of onshore wind power generation. The system comprises a foundation ring, a circular concrete floor, a variable-cross-section H-shaped steel rib beam, a hollow concrete pillar, a toggle pin and a square steel shear connector. The foundation ring is connected with a wind power tower drum on the upper part, and a perforation reinforcing steel bar required by a traditional basic ring is removed and replaced with the prefabricated welding toggle pin, so that the basic ring and a foundation concrete form effective connection by utilizing favorable shearing resistance and pulling resistance of the toggle pin, and the construction difficultyin reinforcing steel bar perforating on site is remarkably reduced. The variable-cross-section H-shaped steel rib beam is connected with a foundation slab and the pillar through the shear connector so as to form a combined structure stress system, so that the mechanical characteristics of two materials are fully played, and larger internal force produced by the upper load can be resisted. The foundation system can be applied to a circular bearing platform of a circular spread foundation or a pile foundation, and is high in on-site construction efficiency and material-saving so as to have a good engineering application prospect.

The invention relates to an accumulative sliding installation structure of a grid roof. The accumulative sliding installation structure is characterized in that an assembly platform is built between two axes of the middle of the grid roof through a full hall scaffold, and upper bearing plates, jacking screws and lower connecting bolts are arranged at the joints of a platform steel plate and scaffold steel tubes; a sliding track comprises a support sliding track body and a middle sliding track body which are arranged at the tops of a frame column and a frame beam respectively, and an oblique supporting rod is arranged between the frame beam and the frame column on the lower side of the sliding track; after grid assembly sections are assembled on the assembly platform, the grid assembly sections are synchronously pushed to a designed position through a pushing device, and the expansion and contraction quantity of a hydraulic cylinder is controlled through a displacement sensor in the pushing process; after the grid assembly sections are jacked through a jack, a lower chord ball connecting body and damping supports are installed. By means of the structure, the grid roof sliding difficulty can be lowered, the construction efficiency can be improved, and the construction safety can be improved. The invention further discloses a construction method of the accumulative sliding installation structure of the grid roof.

The invention discloses a side wall lifting translation type high-speed magnetic levitation turnout structure. A magnetic levitation turnout beam comprises a translation section, a lifting section and a rotating section which are arranged in sequence; the translation section at least comprises a first translation beam and a second translation beam; the lifting section comprises a turnout main beam and fixed side walls arranged on the two sides of the main beam, a first lifting side wall and a second lifting side wall are arranged in the middle of the main beam, and the two lifting side walls alternately ascend and descend to form a straight strand U-shaped beam and a side strand U-shaped beam when the maglev train runs; the rotating section comprises a main beam, fixed side walls arranged on the two sides of the main beam and a rotating type side wall arranged in the middle of the main beam, and the rotating type side wall can rotate to be in butt joint with the first lifting side wall or the second lifting side wall. The invention further discloses a high-speed magnetic levitation turnout control system. By the adoption of the split type design, the manufacturing difficulty of the beam body is effectively reduced, the structure is compact, operation and maintenance are convenient, the partition turnout modules and the turnout machine are integrally designed, and the field construction and debugging efficiency is improved.