30results about How to "Small shock resistance" patented technology

The invention relates to a precast concrete beam and square-rectangular concrete-filled steel tube column combining joint employing unbonded prestressed and ordinary reinforcement for connection and belongs to the technical field of building structures. The precast concrete beam and square-rectangular concrete-filled steel tube column combining joint employing unbonded prestressed and ordinary reinforcement for connection comprises a square-rectangular concrete-filled steel tube column, a reinforced concrete beam, prestressed bars, steel plates, and steel channels. Both the square-rectangular concrete-filled steel tube column and the reinforced concrete beam are precast. The parts, corresponding to the beam section, of the square-rectangular concrete-filled steel tube column and the precast reinforced concrete beam are provided with ducts in which metal bellows are embedded. The steel plates are welded at the connection sections of the square-rectangular concrete-filled steel tube column and the reinforced concrete beam. The steel channels are welded on the square-rectangular concrete-filled steel tube column. Ordinary rebars and unbonded prestressed rebars are passed through the metal bellows, and the prestressed rebars are tensioned so that the beam and the column are integrated. The precast concrete beam and square-rectangular concrete-filled steel tube column combining joint employing unbonded prestressed and ordinary reinforcement for connection has the advantages that construction speed is high, the field welding process is not required, joint connection reliability is guaranteed, seismic performance is good, and the joint has promising application prospect.

The invention provides a reinforced truss floor deck and a production method thereof. The method includes: a reinforced truss floor deck includes a truss and a bottom plate, and the truss is fixedly arranged on the bottom plate; the truss includes a plurality of truss units and a The connecting rod reinforcement of the unit, the truss unit includes the upper chord reinforcement set on the first reference plane, the first lower chord reinforcement and the second lower chord reinforcement set on the second reference plane, the first web reinforcement set on the third reference plane and The second web reinforcement set on the fourth reference plane; wherein, the first reference plane, the second reference plane, the third reference plane and the fourth reference plane are determined according to a preset optimization model. The steel truss floor deck can be pre-processed before leaving the factory, reducing the installation workload on site and improving the on-site installation efficiency of the steel bar truss floor deck. At the same time, it has high seismic performance, thereby improving the quality of the corresponding building.

The invention provides a node for connecting a prefabricated concrete beam with a round steel tube concrete column through unbonded prestressed ribs, and belongs to the technical field of building structures. The node comprises the round steel tube concrete column, the reinforced concrete beam, the unbonded prestressed ribs, an annular plate and channel steel. The round steel tube concrete column (1) and the reinforced concrete beam (2) are both prefabricated; the positions, corresponding to beam sections, of the reinforced concrete beam and of the round steel tube concrete column are provided with hole channels; metal corrugated tubes (4) are pre-buried in the hole channels; the portion, connected with the reinforced concrete beam (2), of the round steel tube concrete column (1) is provided with the annular plate in a welded mode; the channel steel (6) is welded to a round steel tube; the unbonded prestressed ribs (3) penetrate through the metal corrugated tubes (4) and are tensioned so that the beam and the column can be connected into a whole. The construction speed is high, the onsite welding process is needless, reliability of node connection can be guaranteed, good anti-seismic performance is achieved, the node connection mode can be used for a side column node in a structure and can also be used for a middle column node and application prospects are wide.