34results about How to "Shorten the lap length" patented technology

The invention provides an assembly type reinforced concrete frame beam column joint. The assembly type reinforced concrete frame beam column joint is characterized by comprising a prefabricated column and a prefabricated beam, wherein the prefabricated column is provided with a prefabricated column body, an extension section and at least one pair of column lap joint longitudinal ribs; the extension section is arranged in the center of the prefabricated column body and extends to the two sides; each pair of column lap joint longitudinal ribs are arranged in the extension section, penetrate through the whole extension section and extend out from the two ends of the extension section; the prefabricated beam is provided with a prefabricated beam body and at least one pair of prefabricated beam longitudinal ribs arranged on the prefabricated beam body; one ends of each pair of prefabricated beam longitudinal ribs extend out from the end, close to the prefabricated column, of the prefabricated beam body; the prefabricated column and the prefabricated beam are connected through a plurality of stirrups and ultra-high performance concrete; and the column lap joint longitudinal ribs and the prefabricated beam longitudinal ribs are fixed through the multiple stirrups according to a certain interval.

The invention discloses an assembled type shear wall upper-layer and lower-layer combined connection structure which comprises an upper-layer prefabricated wall and a lower-layer prefabricated wall which are connected in a butted mode. When the upper-layer prefabricated wall and the lower-layer prefabricated wall are connected in the butted mode, a downward-protruding supporting structure of the upper-layer prefabricated wall is supported on the lower-layer prefabricated wall, structural longitudinal ribs of an embedded column of the upper-layer prefabricated wall and structural longitudinal ribs of an embedded column of the lower-layer prefabricated wall are opposite in a one-to-one mode and are connected mechanically, the structural longitudinal ribs I of the upper-layer prefabricated wall and the structural longitudinal ribs II of the lower-layer prefabricated wall are connected in an overlapped mode, and the upper-layer prefabricated wall and the lower-layer prefabricated wall are connected at the joint through a cast-in-place concrete structure. The combined connection way combined with the cast-in-place concrete structure is formed through mechanical connection, steel bar splicing and concrete spraying, the wall prefabrication technology is simpler, on-site construction is more convenient and rapider, and the workpiece manufacturing cost and the construction cost can be reduced.

The invention provides a fiber sheet concrete bidirectional laminated slab close-splicing connection structure and an implementation method. The fiber sheet concrete bidirectional laminated slab close-splicing connection structure comprises a strip-shaped fiber sheet, prefabricated concrete bottom plates, a post-pouring concrete laminated layer, plate bottom longitudinal force bearing bars and a laminated surface additional bar, wherein the strip-shaped fiber sheet is connected to a slab joint between two spliced prefabricated concrete bottom plates and is located on the lower surfaces of theprefabricated concrete bottom plates; the plate bottom longitudinal force bearing bars are provided with bended end parts and the bended end parts are anchored into the post-pouring concrete laminatedlayer; and the laminated surface additional bar is arranged on the upper surfaces of the prefabricated concrete bottom plates and stretches across the slab joint, and is connected with the bended endparts of the plate bottom longitudinal force bearing bars. According to the fiber sheet concrete bidirectional laminated slab close-splicing connection structure and the implementation method, the strip-shaped fiber sheet is bonded to the lower surface of the slab joint between the prefabricated concrete bottom plates, the tensile stress on the section of the slab joint can be complementally borne, the section bearing capacity can be effectively improved, and thus the integrality of a floor system can be improved.

The invention provides a high-strength and high-ductility concrete fabricated frame structure system and a connecting system thereof. According to the high-strength and high-ductility concrete fabricated frame structure system, a column longitudinal bar penetrates through the upper end and the lower end of a concrete prefabricated column to form an upper prefabricated column longitudinal bar and alower prefabricated column longitudinal bar and is exposed in a joint core area, column stirrups are prefabricated outside the exposed parts of the column longitudinal bar, and a prefabricated corbelis arranged at the top of a prefabricated reinforced concrete column in the joint core area; the lower portions of two side prefabricated reinforced concrete beams are in lap connection in the jointcore area through a lower longitudinal bar, the upper portions of the two side prefabricated reinforced concrete beams are connected through a beam upper longitudinal bar, which penetrates through beam stirrups and the joint core area and are then poured with high-strength and high-ductility concrete. According to the high-strength and high-ductility concrete fabricated frame structure system, thejoint column longitudinal bar and the beam upper longitudinal bar have no break in the joint core area, so that steel bar connection can be avoided in the joint core area with complex stress but at column inflection points with small bending moment, and structural integrity and anti-seismic properties can be avoided. Without sleeves, the high-strength and high-ductility concrete fabricated framestructure system is convenient to manufacture and install, reduces working procedures, professionals and achieves easy control.

The invention relates to a cable trench construction method adopting an integral movable formwork device, comprising the following steps: laying a cushion layer in a foundation pit of the cable trench; The reinforcing bar of the cable trench is bound on the cushion layer, and the welding of the embedded parts is completed; Laying guide rails on both outer sides of the steel bar; Installing a portal movable frame of an integral movable formwork device and hoisting a cable trench steel formwork for cable trench casting molding, wherein the portal movable frame is provided with a hoisting mechanism for hoisting the cable trench steel formwork; Complete the support of cable trench steel formwork; Concrete is poured into the steel formwork of the cable trench; Demoulding of the cable trench steel formwork one day after the cable trench pouring is completed; Moving the steel formwork of the cable trench to the side of the reinforcing bar of the next section to be poured through the portal moving frame; Until the cable trench is finished. The cable trench construction method adopting the integral movable formwork device is conducive to improving the cable trench molding efficiency and good molding effect.

The invention discloses a reinforcing structure for truncation of connecting reinforcing steel bars in sleeves. The reinforcing structure is used for repairing sleeve grouting joints between prefabricated shear walls, at reinforcing positions, upper connecting parts of the two pre-bent connecting reinforcing steel bars are in lap joint with and welded to the single faces of the two sides of the outer walls of the lack-of-bar sleeves to form weld joints correspondingly, and lower connecting parts of the two pre-bent connecting reinforcing steel bars are in lap joint with and welded to the single faces of the two sides of the lower connecting reinforcing steel bars to form weld joints correspondingly; shear wall chiseling areas and floor chiseling areas are filled with ultrahigh-performanceconcrete; and the prefabricated shear walls and the adjacent lower layers of prefabricated shear walls are connected into a whole at the lack-of-bar sleeves through the upper connecting reinforcing steel bars, the lack-of-bar sleeves, the pre-bent connecting reinforcing steel bars, the lower connecting reinforcing steel bars, grouts, the weld joints and the ultrahigh-performance concrete. The invention further provides a reinforcing method for guiding construction and meeting the reinforcing requirement. The reinforcing structure is little in damage to the original structure, simple in reinforcing connection mode and controllable in cost.

The invention discloses a fabricated sash beam and a fabricated rectangular arrangement side slope protection structure, and relates to the field of side slope engineering. The problems that a cast-in-place reinforced concrete sash beam is multiple in construction steps, complex in technological process and multiple in quality control points, and the engineering quality is difficult to guarantee are solved. According to the technical scheme, the fabricated sash beam comprises five modules, namely a middle assembly module, a top assembly module, a bottom assembly module, a side edge assembly module and a corner assembly module, and at least one rectangular sash is formed by cross beams and longitudinal beams of each module; and joints are respectively reserved in the five modules. The five modules can be spliced on the side slope to form a rectangular slope protection structure. A cast-in-place sash beam is converted into a fabricated structure, five modules are prefabricated and maintained in engineering, and on-site formwork supporting and reinforcing steel bar binding work is reduced; and the five modules are installed on the stable slope surface in an embedded mode, the foundation trench excavation volume is reduced, and the product quality is improved.

The invention discloses a novel hollow type curtain wall. The novel hollow type curtain wall comprises stone, hollow tempered glass, aluminum single plates, aluminum alloy pendants I, aluminum alloy pendants II, stainless steel bolts, stainless steel back bolts, vertical steel plates, aluminum alloy angle codes, transverse steel angles, foam strips, weather-resistant sealant and transverse steel plates, wherein each transverse steel plate is connected between each two adjacent vertical steel plates, the hollow tempered glass is clamped between the aluminum single plates on two sides, the aluminum single plates are connected onto the transverse steel plates through the angle codes, each transverse steel angle is connected between each two adjacent vertical steel plates, each transverse steel angle and each aluminum alloy pendant II are connected through each bolt, and the aluminum alloy pendants I are connected with the stone vertically arranged on the outer side through the stainless steel back bolts. The novel hollow type curtain wall uses the steel plates for forming a keel, reduces the overlapping length between each two adjacent units to the utmost, and guarantees perfect effect. The aluminum alloy angle codes and the aluminum single plates form grooves used for fixing the glass, and therefore the novel hollow type curtain wall guarantees the exterior decoration effects ofbeing smooth, and concise and elegant. The stone is fixed on the keel through the steel angles, and therefore the keel structure cannot be exposed.

The invention provides a fabricated high-strength and high-ductility concrete sleeve-free connection structure and method. The fabricated high-strength and high-ductility concrete sleeve-free connection structure comprises prefabricated reinforced concrete beams, the prefabricated reinforced concrete beams comprise hoop ribs and lap joint section longitudinal ribs arranged on the lower portions ofthe beams, the upper portions of the hoop ribs are exposed, and reserved hoop ribs are arranged on the outer sides of the lap joint section longitudinal ribs. The lower portions of the prefabricatedreinforced concrete beams are lapped joint in a staggered mode through the lap joint section longitudinal ribs, and spiral hoop ribs are arranged at the staggered lap joints of the lap joint section longitudinal ribs. The upper portions of the prefabricated reinforced concrete beams are connected through the hoop ribs sequentially penetrating through the reserved hoop ribs and arranged in the prefabricated reinforced concrete beams, the high-strength and high-ductility concrete is post cast in a lap joint section, and the concrete is post cast on the upper portions of the prefabricated reinforced concrete beams. The lap joint length of rebars can be sharply shortened by utilizing the superhigh strength and the adhesive performance of the high-strength and high-ductility concrete, usage ofthe reserved hoop ribs is reduced or even omitted, anchor bending of beam rebars is avoided, and the problem of rebar overcrowding in a joint area is solved. Because a sleeve is not used, factory manufacturing is convenient, mounting is convenient, specialized personnel are not needed, and the quality is easy to control.

The invention relates to a prefabricated shear wall component and a construction method thereof. The prefabricated shear wall component comprises a wall body, a first grouting hole, a second groutinghole, a first grouting pipe, a second grouting pipe and a connecting piece; the wall body is provided with a first end and a second end which are oppositely arranged, the first grouting hole and the second grouting hole are both formed in the wall body, and the distance between the first grouting hole and the second end is smaller than the distance between the second grouting hole and the second end; the first grouting pipe and the second grouting pipe are both located in the wall body, the first grouting pipe communicates with the first grouting hole and the second end, the second grouting pipe communicates with the second grouting hole and the second end, and the extending direction of the first grouting pipe and the extending direction of the second grouting pipe are both parallel to the connecting line between the first end and the second end; and the connecting piece is embedded in the wall body and extends out of the wall body from the second end. The prefabricated shear wall component is high in assembly rate, easy to construct, and capable of greatly shortening the construction period and improving the construction efficiency; and in addition, the construction method of theprefabricated shear wall component is simple in steps, flexible in construction and suitable for being applied and popularized.

The invention discloses a novel mixed-strength shear-resistant connecting joint based on pressure-bearing type high-strength bolts, and belongs to the technical field of bridge engineering. The novel mixed-strength shear-resistant connecting joint comprises a first steel plate with high section tensile strength and a second steel plate with low section tensile strength, wherein the first steel plate and the second steel plate are fixedly connected through n bolts, the n bolts are sequentially divided into m rows to be arranged from the end, close to the connecting end, of the second steel plate, the number of the bolts arranged in the first row is n1, the number of the bolts arranged in the second row is n2, the number of the bolts arranged in the mth row is nm in proper order, and the number of the bolts arranged in the first row, the second row, ..., to the mth row is monotonically decreased in sequence. According to the novel mixed-strength shear-resistant connecting joint, while the reliability of the to-be-connected steel plate with low section tensile strength is protected, the material utilization rate of the to-be-connected steel plate with high section tensile strength is high; and under the same joint shearing resistance requirement, the utilization rate of the to-be-connected steel plate with high section tensile strength in the novel joint can be increased by 33%.