31results about How to "Eliminate the demoulding process" patented technology

The invention discloses a formwork-free constructional column and a construction method. The constructional column is arranged between two adjacent walls. The side faces of the two adjacent walls are connected through formwork building blocks. The formwork building blocks are laid layer by layer in the height direction of the constructional column. A steel reinforcement cage is arranged inside a columnar cavity defined by the formwork building blocks and the walls. The steel reinforcement cage and the walls are fixed through tying of tying pieces. Concrete is poured into the columnar cavity. The formwork building blocks and building blocks on the two walls are constructed at the same time. Combed joints need to be reserved when the first formwork building blocks are laid, the combined joints are retreated and enter successively, and the height of the combined joints is the height of the wall building blocks. Cleaning holes are reserved in one sides of the first formwork building blocks, and second and other formwork building blocks are laid according to the common construction method. The formwork building blocks are used for replacing a traditional formwork, and the working procedures of formwork erecting and disassembling are omitted; the formwork building blocks and the concrete of the constructional column can be firmly combined into a whole to bear stress jointly.

The invention discloses a box girder unbonded prestressing and steel plate-concrete combination reinforcing design method. The method comprises the following steps that firstly, a combination reinforcing structure is determined, specifically, the reinforced box girder unbonded prestressing and steel plate-concrete combination reinforcing structure is determined, the combination reinforcing structure comprises a steel jacket case composed of a bottom steel plate, two longitudinal side steel plates and two end blocking steel plates, and a plurality of unbonded prestressed rebars are arranged in the steel jacket case; secondly, box girder structural parameters are determined before reinforcement; and thirdly, structural parameters of the combination reinforcing structure are determined, specifically, the parameters are initialized, the theoretical maximum thickness of the reinforcing steel plates is calculated, the thickness of the reinforcing steel plates and the thickness of concrete are determined, and the height of the longitudinal side steel plates and the width of the bottom steel plate are determined. The method is simple in step, reasonable in design, convenient to implement and good in application effect, the structural parameters of the bridge combination reinforcing structure can be determined easily, conveniently and rapidly, and the designed bridge combination reinforcing structure is economical, practical and good in reinforcing effect.

The invention discloses a magnesium oxysulfate steel bar truss board and a manufacturing method thereof. The magnesium oxysulfate steel bar truss board comprises multiple rows of steel bar trusses and magnesium oxysulfate boards; the steel bar trusses are buried in the magnesium oxysulfate boards and arranged in parallel, and the magnesium oxysulfate boards are fixed by using own coagulability and the condensation of the steel bar trusses. The invention further discloses the manufacturing method of the magnesium oxysulfate steel bar truss board. The fixation is conducted by using the coagulability of the magnesium oxysulfate boards and the condensation of the steel bar trusses, and the fixity is good; the magnesium oxysulfate boards are not prone to being corroded, and parts, inserted into the magnesium oxysulfate boards, of the steel bar trusses are not prone to being corroded either; after concrete construction is conducted, the magnesium oxysulfate boards do not need to be removed from the steel bar trusses, the surfaces of the magnesium oxysulfate boards are smooth and flat, and due to the fact that magnesium oxysulfate is white, the operations of plastering and scraping can be eliminated.

The invention discloses a composite pole tower with a vertical skeleton and a preparation method of the composite pole tower. The composite pole tower comprises the vertical skeleton, a foam inner core and a composite outer layer; the vertical skeleton is formed by a plurality of sections of hollow cylinders which are sequentially connected in a sleeved mode; the vertical skeleton is filled with the foam inner core; and the outer surface of the vertical skeleton is wrapped with the composite outer layer. The composite pole tower and the preparation method thereof have the advantages that the vertical skeleton is additionally arranged in the pole tower, thus the strength of the pole tower is improved, and the pole tower is not prone to being broken; the vertical skeleton is formed by the multiple hollow cylinders which are movably connected in the sleeved mode, the hollow cylinders are simple in forming process, small in size and convenient to transport, during assembling, no any auxiliary connection piece is needed, the hollow cylinders can be automatically formed only by being pulled to be suspended after being stacked, and the production efficiency can be improved; a process omits a demoulding working procedure; and the foam inner core is directly formed in the vertical skeleton, through the foaming process of the foam inner core, a certain expansion extrusion effect on the vertical skeleton can be generated, thus the vertical skeleton is shaped, and the vertical skeleton can be protected from being corroded.

The invention relates to high-strength low-resilience rate shotcrete and a construction process thereof, and belongs to the technical field of building concrete. The shotcrete is prepared from the following components in percentage by weight: 15 to 20 percent of cement, 3 to 4 percent of silica fume, 2 to 3 percent of natural zeolite powder, 40 to 50 percent of sand, 25 to 35 percent of gravel, 0to 2 percent of steel fibres, 0.8 to 1.2 percent of a liquid alkali-free accelerating agent and 0.3 to 0.5 percent of a polycarboxylate high-performance water reducing agent. The shotcrete disclosed by the invention is high in strength, and does not have a strength reducing phenomenon in a later stage; moreover, the resilience rate of the shotcrete is reduced to 3 percent; and compared with the construction technology, a large number of raw materials can be saved, and green healthy and sustainable development in the industry of building materials is truly realized.

The invention discloses an unbonded prestress and steel-concrete composite reinforcement design method for concrete T-shaped beams. The unbonded prestress and steel-concrete composite reinforcement design method includes steps of firstly, determining unbonded prestress and steel plate-concrete composite reinforcement structures for the reinforcement T-shaped beams; secondly, determining structural parameters of the T-shaped beams prior to reinforcement; thirdly, determining structural parameters of the composite reinforcement structures, to be more specific, initializing the parameters, computing the maximum theoretical thicknesses of reinforcement steel plates, determining the thicknesses of the reinforcement steel plates and the thickness of concrete and determining the heights of longitudinal side steel plates and the widths of bottom steel plates. Each composite reinforcement structure comprises the corresponding bottom steel plate, the two longitudinal side steel plates and a steel bushing case, each steel bushing case comprises two end blocking steel plates, and a plurality of unbonded prestress reinforcing steel bars are arranged in each steel bushing case. The unbonded prestress and steel-concrete composite reinforcement design method has the advantages that the steps are simple, the unbonded prestress and steel-concrete composite reinforcement design method is reasonable in design and convenient to implement, good service effects can be realized, the structural parameters of the bridge composite reinforcement structures can be easily, conveniently and quickly determined, the bridge composite reinforcement structures designed by the aid of the unbonded prestress and steel-concrete composite reinforcement design method are economical and practical, and good reinforcement effects can be realized by the bridge composite reinforcement structures.

A preparation method for a TRC formwork reinforced concrete column comprises the following steps that a fiber woven mesh with high tensile resist strength and good decay resistance is adopted, and the fiber woven mesh is dipped into glue or strengthened through a steel wire mesh liner; an inner mould is mounted, shear resistant hooks are mounted in drill holes of the inner mould in an inserting mode, and the fiber woven mesh is fixed to the outer side of the inner mould; an outer mould is built on the outer side of the fiber woven mesh, prepared high-performance concrete is slowly poured into space formed by the inner mould, the fiber woven mesh and the outer mould, and manufacturing of a TRC formwork is finished; and after a TRC formwork layer reaches the set strength, formwork disassembling is carried out, the concrete is poured into the TRC formwork, and preparing of the TRC formwork reinforced concrete column is finished. Compared with the prior art, time and labor are saved, the cost is reduced, and the construction efficiency is improved; the bearing capacity and ductility of the reinforced concrete column are improved, and the durability of components in severe environments such as a cold environment and an alkalinity environment is improved; and strengthening of a building is more efficient, simpler, cheaper and more environmentally friendly.

The invention discloses a design method for unbonded prestress and steel-concrete combined reinforcement of a concrete box girder. The design method comprises the following steps of I, determining a combined reinforcing structure: determining the unbonded prestress and steel plate-concrete combined structure of the box girder to be reinforced wherein the combined reinforcing structure comprises a steel jacket box formed by a base steel pate, two longitudinal side steel plates and two end part plugging steel plates, and a plurality of unbonded prestressed reinforcing bars are arranged in the steel jacket box; II, determining structural parameters for reinforcing the front box girder; and III, determining structural parameters of the combined reinforcing structure in the process comprising the following steps of initializing the parameters, calculating theoretical maximum thickness of the reinforcing steel plates, determining the thickness of the reinforcing steel plates and the thickness of concrete, and determining the height of the longitudinal side steel plates and the width of the base steel plate. The method disclosed by the invention is simple in steps, reasonable in design, convenient to realize, and good in using effect, the structural parameters of the combined reinforcing structure of a bridge can be simply, conveniently and quickly determined, and the designed combined reinforcing structure of the bridge is economical and practical and good in reinforcing effect.

The invention discloses an unbounded prestress and steel plate-concrete combined reinforcing design method of a T-type beam. The method comprises the steps that first, a combined reinforcing structure is determined, specifically, the unbounded prestress and steel plate-concrete combined reinforcing structure of the reinforced T-type beam is determined and comprises a steel jacket box composed of a bottom steel board, two longitudinal side steel boards and two end portion sealing steel boards, and a plurality of unbounded prestress steel bars are arranged inside the steel jacket box; second, the structure parameters of the T-type beam are determined before reinforcement; and third, the structure parameters of the combined reinforcing structure are determined, specifically, the parameters are initialized, the maximum theory thickness of reinforcing steel boards is calculated, the thickness of the reinforcing steel boards and the thickness of concrete are determined, and the height of the longitudinal side steel boards and the width of the bottom steel board are determined. The method is simple in step, reasonable in design, convenient to implement, good in use effect, and capable of determining the structure parameters of the bridge combined reinforcing structure easily, conveniently and rapidly, and the designed bridge combined reinforcing structure is economical, practical and good in reinforcing effect.

The present invention discloses a transparent conductive substrate and a preparation method thereof, and applications, pertaining to the field of transparent conductive materials. The preparation method of the transparent conductive substrate comprises the following steps: (A) uniformly coating a dispersion liquid containing nano-metal on the surface of a transparent conductive substrate (1), performing pre-drying, and obtaining a substrate (2) coated with a nano-metal coating layer; and (B) performing ultraviolet exposure treatment on the substrate (2) coated with the nano-metal coating layer, forming a light-cured shaped conductive grid (3) containing the nano-metal, performing cleaning development and heating, and obtaining a transparent conductive substrate (4), wherein the grid line width of the light-cured shaped conductive grid (3) <= 20 [mu]m. The nano-metal is an ultraviolet sensitive material. According to the method, the thickness of a conductive layer is easy to control, the preparation method is simple, and the transparent conductive substrate with large area and controllable conductivity can be rapidly prepared. The prepared transparent conductive substrate has the advantages of stable transparency and conductivity, high transparency and high yield rate.

The invention discloses an accelerating agent, which is characterized by consisting of the following raw materials in part by weight: 10 to 30 parts of limestone, 18 to 36 parts of bauxite, 3 to 5 parts of desulfurated gypsum residue, 25 to 50 parts of fly ash, 6 to 15 parts of high-efficiency water reducing agent and 0.05 to 0.1 part of exciting agent, wherein the high-efficiency water reducing agent is a naphthalene sulfonate high-efficiency water reducing agent, and the exciting agent is mixed by lauryl sodium sulfate and methylcellulose according to a mass ratio of 1:1. The accelerating agent has high impermeability and freezing resistance and low rebound rate, is easy, convenient and practicable to construct and has no harm to skin and eyes of a constructor. Meanwhile, the desulfurated gypsum residue is used as a raw material, the secondary utilization of the desulfurated gypsum residue is realized, resources are saved, the problem of treating solid waste residue in an electric power plant is solved and the environment is protected.

The invention provides a self-balancing prefabricated surface and cast-in-place core filled wall formwork, which includes positioning keys (1) arranged at intervals along the direction of the filling wall, and the two sides of the positioning key (1) are connected by connecting keys (2). The prefabricated slab (3), the prefabricated slab (3) is provided with a tie hole (7). The middle and upper end of the prefabricated slab (3) has at least one pouring hole (4), and the outer side of the prefabricated slab (3) has a pressure device. The present invention has the advantages that: the materials for the formwork are prefabricated in batches in factories, the wall core material is low and the materials are widely used, and the logistics cost of materials is reduced. Wall prefabrication saves construction formwork, and cavity formwork saves external construction fixing measures, which simplifies the construction process. The prefabrication pressure is controllable and adjustable, and its comprehensive economic index and construction period are superior to the prior art, thereby making up for the deficiencies of the prior art.

The invention provides a self-balancing prefabricated surface and cast-in-place core filling wall, which includes positioning keys (1) arranged at intervals along the direction of the filling wall, and the two sides of the positioning key (1) are prefabricated panels connected by connecting keys (2) (3), there is at least one pouring hole (4) in the middle and upper end of the prefabricated slab (3), and a cavity (5) is formed between the paired prefabricated slabs (3), and the cavity (5) is filled with core material (6 ). Because the wall surface of the present invention adopts the prefabricated panels prefabricated and produced in batches by the factory, the requirement for the core filling material is reduced, the materials are widely used, and the cost is reduced. Wall prefabrication eliminates the need for construction templates, and the two prefabricated walls are connected internally to form a cavity mold, thereby eliminating the need for external construction and fixing measures, which greatly simplifies the construction process. The adoption of quick-setting core material is conducive to the timely disassembly and turnover of construction tools. The mechanization of the whole process from batching to pouring can greatly save labor, improve efficiency and reduce costs.

The invention relates to the technical field of construction engineering, in particular to an integrated beam-slab-column formwork structure system and a construction method. The structural system is a frame structure formwork system composed of unremovable column formwork, beam formwork, beam-column joint formwork and floor formwork; the column formwork, beam-column joint formwork, beam formwork and floor formwork are respectively spliced ​​by corresponding formwork units Composition; the demolition-free formwork unit is made of a thin-walled shell structure, used as a formwork when pouring concrete, and later used as a decoration material, one side is treated with a rough surface, and the other side is smooth; the joints of the formwork units are embedded with each other in the form of concave-convex grooves; The outer side of the demolition formwork is fastened with fastening hoops to resist the lateral pressure of cast-in-place concrete; the beam-column joint formwork makes the integrated beam-slab-column formwork structural system suitable for prefabricated structural components, and is also suitable for on-site cast-in-place; prefabricated components or cast-in-place concrete A building unit that forms a frame structure, and multiple building units form a multi-storey or high-rise frame structure.

The invention relates to an assembled composite floor slab based on tool type template lifting. The assembled composite floor slab comprises a composite floor slab shaping supporting system, a composite floor slab cast-in-situ belt template lifting system, a composite floor slab and beam connecting structure and a composite floor slab and wall connecting structure, the composite floor slab shapingsupporting system comprises an adjustable lifting beam, a prefabricated floor slab and independent supports, limiting screws are pre-embedded on a lower floor slab, the independent supports are erected among the limiting screws and comprise frame grid plate bases lower vertical rods, sleeving connection type upper vertical rods, protection frames and tool beams from bottom to top, the prefabricated floor slabs are hosted to tool beams of the independent supports by the adjustable lifting beam and adjusted flat by fine-adjustable supporting seats at the bottoms of the protection frames, and ahoisting rope is arranged on the adjustable lifting beam. The composite floor slab has the advantages that a unit-type adjustable shaping supporting system replaces a traditional independent steel support, the fine-adjustable supporting seats are additionally arranged, construction errors of the composite floor slab can be reduced, and deformation in the construction stage of a laminated cast-in-place layer is decreased.