65results about How to "Reduce wet work workload" patented technology

The invention relates to a corrugated steel webplate combined box girder floor system for a cable-stayed bridge and a construction method thereof, and belongs to the technical field of bridge structures. The corrugated steel webplate combined box girder floor system comprises a precast concrete plank and a cast-in-place concrete seam, wherein the precast concrete plank is positioned on a steel box girder and is integrated with the steel box girder into a whole; the steel box girder is formed by welding a top flange steel plate, a corrugated steel webplate and a steel plate at the bottom of the box girder; a box girder baseplate stiffening rib and a diaphragm plate are welded in the steel box girder; the diaphragm plate comprises a top flange steel plate of the diaphragm plate and a steel webplate of the diaphragm plate; a toggle pin connecting piece is welded on the top flange steel plate and the top flange steel plate of the diaphragm plate; and a steel anchor pulling plate and a steel sleeve are welded on the top flange steel plate. The corrugated steel webplate combined box girder floor system simplifies the manufacturing process for the precast concrete plank, gives full play to the superior mechanical property of the corrugated steel webplate and the release action of the corrugated steel webplate on the creep effect of concrete shrinkage, improves the bearing capacity, stiffness and crack resistance of the structure, and improves the durability of the structure.

The invention discloses a lower flange improved corrugated steel web plate composite box girder and a construction method thereof, which belong to the technical field of bridge structures. The box girder consists of an upper flange concrete slab, a corrugated steel web plate, a lower flange concrete slab, an upper flange steel plate, a lower flange steel plate and male pin connecting pieces, wherein a steel bar mesh piece and a prestressed tendon corrugated pipe are arranged in the lower flange concrete slab. The lower flange concrete slab is connected with the lower flange steel plate and the corrugated steel web plate to form a whole body through the male pin connecting pieces which are welded above the lower flange steel plate and on the lateral surface of the corrugated steel web plate. By adopting the structure, the lower flange improved corrugated steel web plate composite box girder can solve the problems that the on-site amount of work and the construction difficulty are large for casting the lower flange concrete slab of the conventional corrugated steel web plate composite box girder, the construction quality is difficult to guarantee and the like under the premise of almost not increasing the steel consumption, gives full play to the tensile property of the steel plates and the restriction to concrete, enhances the bearing capacity and the cracking resistance of the structure, and improves the durability of the structure. The lower flange improved corrugated steel web plate composite box girder is simple in structure, reasonable in stressing and quick and convenient in construction, and has good technical and economic benefits.

The invention discloses a radiation heating and cooling integrated air conditioner in quick effect and changeable load. Load can be independently borne by an indoor machine or can be commonly borne by the indoor machine and a capillary tube, and the indoor temperature is regulated by mainly using the heat transmission modes of radiation and natural convection. A surface air cooler with larger surface area is provided when the load is independently borne by the indoor machine; and in the mode of commonly bearing the load, the indoor machine and the capillary tube are positioned in different return water supply loops, the water supply temperature of the indoor machine is different from that of the capillary tube, the temperature of water supplied to the indoor machine needs to be lower than that of water supplied to the capillary tube during the refrigerating in summer, and the temperature of water supplied to the indoor machine needs to be higher than that of water supplied to the capillary tube during the heating in winter. According to the radiation heating and cooling integrated air conditioner in quick effect and changeable load disclosed by the invention, the characteristics of quiet system, high heat comfort degree, energy saving, invisibility, attractive performance and the like of a traditional radiation air conditioner are reserved, the effect is rapid, the load can be adjusted, the indoor environment in higher standard can be built, and the radiation heating and cooling integrated air conditioner has larger developing space in high-grade buildings.

The invention discloses a bush constraint buckling-preventing support with a diamond-shaped energy dissipation unit. The bush constraint buckling-preventing support is characterized in that the bush constraint buckling-preventing support comprises an end constraint segment, an energy dissipation segment and a bush; and the two ends are connected with beams or column components or nodes to form a whole through bolts so as to achieve the purpose of improving of the resistant-lateral rigidity of components. The bush constraint buckling-preventing support with the diamond-shaped energy dissipation unit is adopted, and thus under the action of a small earthquake, the bush constraint buckling-preventing support keeps elasticity; and under the action of a medium earthquake or a severe earthquake, the energy dissipation segment enters a yield stage, and the effect of a damper can further be achieved through the good hysteretic energy dissipation performance of the energy dissipation segment. The bush constraint buckling-preventing support with the diamond-shaped energy dissipation unit can be prefabricated and formed in a factory, the quality of the components is ensured, the workload of site operation is reduced, and energy conservation and environment protection are achieved.

The invention discloses a sleeve restraint anti-buckling support provided with staggered pyramid-shaped energy dissipation units. The sleeve restraint anti-buckling support provided with the staggered pyramid-shaped energy dissipation units is characterized in that the sleeve restraint anti-buckling support is composed of end restraint sections, energy dissipation sections and a sleeve, and the two ends are connected with beam or column components or joints in a whole through bolts, so that the purpose of increasing the resistant-lateral rigidity of a component is achieved. By the adoption of the sleeve restraint anti-buckling support provided with the staggered pyramid-shaped energy dissipation units, under the small shock action, the sleeve restraint anti-buckling support can be kept elastic; and under the medium or great shock action, the energy dissipation sections are switched to the buckling stage, and a damper effect can be achieved through the good hysteretic energy dissipation performance of the energy dissipation sections. The sleeve restraint anti-buckling support provided with the staggered pyramid-shaped energy dissipation units can be prefabricated in a factory, the quality of the component is guaranteed, the field construction workload is reduced, energy is saved, and environmental friendliness is achieved.

The invention discloses a device used for shear wall elevation and levelness control and a use method thereof. The device comprises a levelness control plate, fine adjusting supporting rods are connected to the end face of one side of the levelness control plate, a threaded part is arranged at the end, far away from the levelness control plate, of each fine adjusting supporting rod, and the fine adjusting supporting rods are movably connected to fine adjusting supporting rod support bases. The method includes the steps that S1, when a prefabricated shear wall is produced and manufactured, the fine adjusting supporting rod support bases are pre-buried; S2, the fine adjusting supporting rods are screwed into the fine adjusting supporting rod support bases and adjusted, so that the height of the end face of the top of the levelness control plate is consistent with the height of control elevation of the bottom of a prefabricated wallboard on the upper layer; S3, after concrete reaches certain strength, it is only needed that the prefabricated shear wall wallboard on the upper layer is directly placed on the levelness control plate. The elevation and levelness of the wallboard are effectively controlled, the installation period of the prefabricated wallboard is shortened, labor cost is reduced, and meanwhile wet construction workloads of operators in a construction site are reduced.

The invention discloses a concrete frame seismic reinforcement structure applying expanded metal. A to-be-reinforced concrete frame is formed by to-be-reinforced frame columns and to-be-reinforced frame beams. The expanded metal is connected between every two adjacent to-be-reinforced frame columns and every two adjacent to-be-reinforced frame beams on the same vertical plane respectively, constraint external members are fixed between the expanded metal and the to-be-reinforced concrete frame through connecting parts, steel with the yield strength smaller than that of the constraint external members is adopted in the expanded metal, and the connecting parts comprise high-strength bolts for connecting the expanded metal and the constraint external members and chemical bolts for connecting the constraint external members and the to-be-reinforced concrete frame. The constraint external members can improve the ductility of the to-be-reinforced frame columns. The expanded metal can improve the bearing capacity and energy-dissipating capacity of the to-be-reinforced structure. The concrete frame seismic reinforcement structure is used for structural reinforcement, the wet construction workload is small, the constraint external members can be prefabricated in a factory, only installation of the chemical bolts and the high-strength bolts needs to be completed on site, the industrial degree is high, construction is convenient and rapid, and the influences on normal use of a building are reduced.

The invention discloses a buckling induction support with the ends provided with oblique spiral induction units. The buckling induction support comprises constraining sections, energy consumption sections and a supporting straight section. The energy consumption sections are arranged at the two ends of the supporting straight section and each composed of at least one oblique spiral induction unit in the axial direction of the support. Each oblique spiral induction unit is a space body formed by sequentially arranging m oblique spiral induction sub units in the oblique direction, and the section of each space body is a spiral line. Each oblique spiral induction sub unit is a space structure formed by folding two triangular plates in the plane. The elasticity of the buckling induction support is maintained under small earthquake action, enters a buckling stage under middle earthquake or large earthquake action, and can further achieve the effect of a damper through the good hysteric energy consumption performance of the buckling induction support. Compared with traditional buckling constraining supports, by adoption of the buckling induction support, the site construction operation workload is decreased, and energy saving and environmental protection are achieved.

The invention discloses a buckling inducing brace with the ends provided with annular screw-type induction units. The buckling inducing brace with the ends provided with the annular screw-type induction units comprises retraining sections and energy dissipation sections and further comprises a brace straight section. The energy dissipation sections are arranged at the two ends of the brace straight section. Each energy dissipation section is composed of at least one annular screw-type induction unit in the axial direction of the brace. Each annular screw-type induction unit is a space body with a regular polygon section, wherein the space body is formed in the manner that m annular screw-type induction subunits are annularly and sequentially arranged. Each annular screw-type induction subunit is a space body which is formed by two collinear triangular plates through folding. The buckling inducing brace with the ends provided with the annular screw-type induction units keeps elasticity under the action of a small earthquake; and under the action of an intermediate earthquake or a large earthquake, the buckling inducing brace enters a yielding stage, and the buckling inducing brace can achieve the effect of a damper through the good hysteretic energy dissipation capacity. Compared with a traditional buckling restraining brace, the buckling inducing brace with the ends provided with the annular screw-type induction units lightens the on-site construction workload, saves energy and is environmentally friendly.

The invention discloses a sleeve buckling induction support with oblique spiral induction units. The sleeve buckling induction support is composed of end restraining sections, a buckling induction section, an inner sleeve and an outer sleeve, wherein the buckling induction section is clamped between the inner sleeve and the outer sleeve; the inner sleeve and the outer sleeve are each connected with one end restraining section; the buckling induction section is formed by the at least one oblique spiral induction units in the axis direction of the support; each oblique spiral induction unit is a space body formed by oblique and sequential arrangement of m oblique spiral subunits, and the section of the space body is in a spiral line shape; and each oblique spiral subunit is a space body formed by collinear folding of two triangular plates located in the same plane. The sleeve buckling induction support maintains elasticity under small earthquakes, and under intermediate or large earthquakes, the buckling induction section enters the buckling stage and can achieve the effect as a damper due to the excellent retard energy consumption performance.

The invention discloses a fabricated composite wallboard T-shaped constructional column and independent foundation connecting structure and a construction method, and relates to the technical field of fabricated constructional engineering. A T-shaped steel plate is welded to the bottom of a T-shaped constructional column reinforcement cage, a T-shaped notch is reserved in an independent foundation, steel plates are laid on the periphery of the notch, the whole steel plates are wedge-shaped, and the wedge-shaped steel plate laid on the inner side of the notch of the independent foundation in advance, the T-shaped steel plate at the bottom of the T-shaped constructional column and cast-in-place concrete interact. The T-shaped constructional column and the independent foundation form a whole, the pulling resistance of the constructional column is enhanced, the integrality is higher, more stable and firmer, a wall plate and a foundation beam are connected firstly, then the connecting part of the T-shaped constructional column and the independent foundation is poured through concrete, and connection of the T-shaped constructional column and the independent foundation is completed. The method is suitable for a large-quantity and wide-area low multi-layer fabricated (regenerated) concrete structure, and is excellent in anti-seismic property, ecological, environment-friendly, convenient to construct, economical and applicable.

The invention discloses a prefabricated floor slab small-slope roof structure, a construction method and prefabricated floor slabs, the prefabricated floor slab small-slope roof structure comprises a frame beam and a plurality of prefabricated floor slabs laid on the frame beam, the prefabricated floor slabs are continuously arranged in rows in the slope direction of a slope roof, the multiple rows of prefabricated floor slabs are arranged at intervals in the direction perpendicular to the slope, and each prefabricated floor slab comprises a slab body; the front end and the tail end of each slab body extend downwards to form longitudinal sections and then are bent outwards to form butt joint parts, the butt joint parts of every two adjacent prefabricated floor slabs in each row are oppositely combined to form a filling area defined by the longitudinal sections and the butt joint parts, and gaps are formed between the prefabricated floor slabs and the frame beams. Gaps communicated with the gaps and the filling areas are formed in the two sides of each row of prefabricated floor slabs, and the gaps, the gaps and the filling areas are filled with concrete, so that all the prefabricated floor slabs and the frame beam are fixedly connected through the concrete, and every two adjacent prefabricated floor slabs are fixedly connected through the concrete. The device is simple and compact in structure, meets the safety requirement, is simple and convenient to assemble on site, reduces the construction difficulty and labor intensity, and improves the working efficiency.

The invention discloses a fabricated composite wallboard L-shaped constructional column and independent foundation connecting structure and a fabricated composite wall construction method.The fabricated composite wallboard L-shaped constructional column and independent foundation connecting structure comprises a foundation beam, an independent foundation, a foundation cushion layer and an L-shaped constructional column, the foundation cushion layer is arranged below the foundation beam and the independent foundation, and the independent foundation is arranged at the L-shaped corner of the foundation beam; the foundation beam and the independent foundation are poured into a whole on site through concrete, a concave groove with an upward opening is formed in the upper surface of the foundation beam, the lower portion of the assembly type composite wallboard is fixedly connected into the concave groove, the independent foundation is provided with an L-shaped groove, steel plates are embedded in the vertical faces of the sides of the L-shaped groove, the lower portion of the L-shaped constructional column is inserted into the L-shaped groove, and the lower portion of the L-shaped constructional column is fixedly connected with the L-shaped groove. The lower portion of the L-shaped constructional column and the independent foundation are poured together through cast-in-place concrete to form a whole, and the assembly type composite wall plate is fixedly connected with the L-shaped constructional column. Prefabricated construction of the constructional column is achieved, the wet construction workload on a construction site is greatly reduced, and the construction period is shortened.

The invention discloses a sleeve buckling inducing support with variable-angle four-crease-type inducing units. The support comprises end constraint segments, a buckling inducing segment, an inner sleeve and an outer sleeve. The end constraint segments are located at the two ends of the buckling inducing segment, the buckling inducing segment is sandwiched between inner sleeve and the outer sleeve, and the inner sleeve and the outer sleeve are connected with the end constraint segments respectively. The buckling inducing segment is formed by at least one variable-angle four-crease-type inducing units in the axial direction of the support, and each variable-angle four-crease-type inducing unit is a space body formed by sequentially arranging m identical variable-angle four-crease-type subunits in the circumferential direction, wherein the section of the space body is a regular polygon. Each variable-angle four-crease-type subunit is a space body formed by folding four trapezoidal plates in the same plane. The buckling inducing support has good hysteretic energy dissipation performance and can achieve the effect of a damper; the support can be prefabricated in a factory, the component quality is guaranteed, the workload of on-site construction is reduced, and energy conservation and environment protection are achieved.