9results about How to "Node structure is simple" patented technology

The utility model discloses a power transmission line metal assembly type foundation in plug-in connection, and relates to the technical field of high-voltage power transmission line foundations. The support comprises insertion type angle steel, four support main materials and a foundation slab, the two support main materials form two support main material sets, each support main material set is of a herringbone structure, the upper ends of the support main materials are connected with the lower ends of the insertion type angle steel through bolts, and the lower ends of the support main materials are connected with the foundation slab; the foundation slab comprises two foundation slab main beams and a plurality of foundation slab secondary beam groups; the section type of the foundation slab girder is channel steel. According to a metal assembly type foundation of an existing power transmission line, tower legs and the foundation are mainly connected through tower base plates, and the connecting mode has the problems that the node structure is complex, the node economy is poor, and the precision requirement is high during machining, construction and assembly. The tower legs and the foundation slab are connected through the insertion type angle steel, the node structure is simple, the node economy is good, and the precision requirement is not high during machining, construction and assembly.

The reinforced metal roof node structure comprises purlines and additional purlines, the two additional purlines are arranged in the construction partition of a steel roof, bottom plates are arranged on the purlines and the additional purlines, the bottom plates are broken at the positions of the additional purlines, and the bottom plates exceed the additional purlines to form cantilever sections. The heat preservation rock wool and the waterproof coiled material are sequentially arranged on the bottom plate, the heat preservation rock wool and the waterproof coiled material are also disconnected at the positions of the additional purlines, the thickness of the position, corresponding to the position between the additional purlines, of the heat preservation rock wool is reduced, a groove is formed, and the after-loading rock wool and the after-loading waterproof coiled material are laid in the groove. Metal roofs in the construction subareas are constructed along with the steel roofs, and only one span of metal roofs at the boundary of the construction subareas is reserved for construction after the nodes are adopted. The problems that due to large relative deformation between steel roof construction partitions, metal roofs at boundaries are difficult to install, and the waterproof and heat preservation effects are poor can be solved. The joint is simple in structure, and the construction method is convenient.

The invention discloses a design method for accurately considering the rigidity of a flat node of a center pillar end plate of a portal rigid frame, which comprises the following steps of: 1, modeling the rigid frame by adopting two-dimensional modeling software to obtain a model; secondly, for the model meeting the index requirement and the component internal force requirement, internal force at beam-column joints in the rigid frame is extracted, and the end plate thickness and bolt connection are designed; 3, according to the beam column node and the end plate thickness, the beam column rotation rigidity and the steel beam line rigidity are obtained through calculation through a beam column rotation rigidity algorithm and a steel beam line rigidity algorithm; 4, according to the parameter R / ib = kb, judging whether the node is restrained by an ideal rigid connection node or not, and determining whether the design is completed or not; wherein ib is steel beam line rigidity, R is beam column rotation rigidity, and kb is beam column joint constraint rigidity. The invention discloses a design method which is high in economical efficiency, excellent in rigid connection structure rigidity and capable of accurately considering the rigidity of a horizontal joint of a center pillar end plate of a portal rigid frame.

This invention discloses a precast reinforced concrete frame column and a frame structure, including a frame column body, an outer steel pipe, a steel end structure, and a steel connecting bracket. Based on the connection position of the external beam on the frame column body, the column reinforcement cage has an inward-facing annular groove. The outer steel pipe is fitted outside the annular groove of the column reinforcement cage, with its outer wall flush with the outer wall of the column concrete body. The steel end structure is embedded within the column concrete body. Adjacent frame columns are fixedly connected via the steel end structure. The steel connecting bracket is fixed between the outer steel pipe and the external beam. The frame structure includes precast reinforced concrete frame columns and main beams. Corresponding steel connecting brackets are provided on the outer wall of the outer steel pipe of the precast reinforced concrete frame column. The end of the main beam is fixed to the other end of the steel connecting bracket. This invention simplifies the structure and construction process of the frame columns, main beams, and secondary beams, reduces steel usage, and improves construction efficiency.

The present invention relates to the technical field of connection of building structures, and discloses a U-shaped plate type steel-wood composite node based on steel-foam aluminum energy dissipation, which is used for connecting steel square columns, wooden square columns and I-beams, comprising: connecting the beam U-shaped plate with the I-beam; bolting the column U-shaped plate with the beam U-shaped plate to form a columnar installation cavity that runs through the beam U-shaped plate and the column U-shaped plate from top to bottom, wherein the column U-shaped plate comprises: an outer column U-shaped plate and an inner column U-shaped plate embedded in the outer column U-shaped plate, wherein a plurality of triangular grooves that fit each other are arranged between the outer column U-shaped plate and the inner column U-shaped plate; the top end of the steel square column extends into the installation cavity, and the steel square column is connected to the beam U-shaped plate and the column U-shaped plate by bolts; a carbon fiber cloth is pasted on the bottom end of the wooden square column, and the bottom end of the wooden square column is inserted into the columnar installation cavity formed by the beam U-shaped plate and the column U-shaped plate; the steel-wood composite node can prevent the wood from breaking or deforming, improve the impact resistance of the node, and ensure the overall stability and safety of the assembled structure.

The present invention discloses a rectangular steel tube constrained ultra-high strength concrete column and a construction method thereof, which comprises a steel tube assembly, ultra-high strength concrete and longitudinal steel bars, wherein the steel tube assembly comprises a rectangular steel tube and two rectangular steel sleeves, the outer contours of the two rectangular steel sleeves are adapted to the inner contour of the rectangular steel tube, the two rectangular steel sleeves are respectively sleeved inside the two ends of the rectangular steel tube, and the longitudinal ends of the two rectangular steel sleeves correspond to the two ends of the protruding rectangular steel tube respectively; the ultra-high strength concrete and the longitudinal steel bars are respectively placed inside the steel tube assembly, and the ultra-high strength concrete is fitted with the inner wall of the steel tube assembly. The present invention adopts ultra-high strength concrete to effectively improve the bearing capacity of the structure, and the rectangular cross section has the characteristics of regular arrangement and simple node construction; the addition of a rectangular steel sleeve at the column end can improve the compressive stiffness of the column end section and improve its anti-deformation ability.

The present invention proposes a detachable connection node and construction method for modular steel structure buildings. The node is used to complete the horizontal and vertical connection between each module unit, including a module unit corner, a vertical node plate, a connecting plate, a vertical high-strength bolt and a lateral single-sided blind hole bolt; the module unit corner includes a module column and two module beams vertically connected to each other, a horizontal node plate, a tooth groove and a sealing plate; the teeth and grooves between the module columns are engaged with each other during on-site construction, and the vertical node plate and the side wall of the module column are connected through the lateral single-sided blind hole bolt during on-site construction to complete the horizontal connection of the module unit; the horizontal node plate and the connecting plate of the upper module unit and the horizontal node plate of the lower module unit are connected through the vertical high-strength bolt during on-site construction, and the positioning holes on the sealing plate and the positioning heads on the upper and lower surfaces of the connecting plate are inserted and positioned during on-site construction to complete the vertical connection of the module unit.

The invention relates to an FRP composite rib recycled concrete prefabricated pier column-foundation socket joint and a construction method, and belongs to the technical field of structural engineering. Comprising a prefabricated recycled concrete pier column and a recycled concrete foundation, a horizontal resistance device embedded in the recycled concrete foundation, an embedded metal corrugated pipe and UHPC grouting socket and spigot joint are combined and connected, and the connection reliability and anti-seismic safety of the assembly type joint are guaranteed. The prefabricated recycled concrete pier column is composed of a longitudinal FRP composite bar and a stirrup, and the recycled concrete foundation is composed of a horizontal resistance device, a pre-buried metal corrugated pipe, a reserved grouting pressure pipe, a reserved inserting groove, a foundation longitudinal steel bar and a foundation stirrup. The longitudinal FRP composite bars of the pier column and the metal corrugated pipe are connected through grouting to resist the drawing force of a joint area, the horizontal force is jointly borne by concrete and the horizontal resistance device, the horizontal resistance device bears most of the horizontal force around a foundation socket groove, and the pressure damage to the concrete of a bearing platform is reduced.

The utility model discloses an assembly type concrete primary and secondary beam connecting structure which comprises a primary beam (1) and a secondary beam (2), a plurality of notches (11) are formed in the end portion of the primary beam (1), a plurality of trusses (4) are arranged between the secondary beam (2) and the primary beam (1), one end of each truss (4) is embedded in the end portion of the secondary beam (2), and the other end of each truss (4) extends out of the secondary beam (2) to be supported on the notches (11) of the primary beam (1). And a concrete laminated layer (5) is poured above the main beam (1), the secondary beam (2) and the truss (4). The utility model has the characteristics that the construction is simple, the cost is saved, and the stability is improved.