39results about How to "Give full play to the resistance to pressure" patented technology

The invention discloses a way to design pressing tube of SCS combined hydraulic power station. Between the steel inside and the round wall fill concrete tube, between the concrete tube and the round wall fill the outside steel tube. The outside steel tube is anti-seepage , the middle concrete tube resists external pressure, and the inside steel tube only resists water pressure inside when operating. It decrease by large the content of steel and concrete and the cost, and it is convenient to transfer the water pressure from inside to outside. The way of design brings the good capability of steel and concrete into play, and apt to the work environment very well. Otherwise, in operation there is no need to add other ways, so it increases the speed of the operation by large.

The invention relates to a composite column composite beam frame with a built-in high-strength concrete core column and a construction method thereof, wherein the composite column composite beam frame with a built-in core column of different strength has a built-in asymmetrical steel bone or plastic bone prestressed concrete composite beam, The reinforced concrete composite column with built-in core column, the composite beam is horizontally arranged between the composite columns, and the two are connected by nodes at the intersection; the core column is formed by pouring longitudinal bars, stirrups, and concrete together, and the longitudinal bars are distributed in the core column The stirrups are wrapped around the longitudinal reinforcement, and the core column is placed in the reinforced concrete column; the steel frame or plastic frame in the composite beam is provided with transverse stiffeners, the steel frame or plastic frame at the mid-span is located at the lower part of the composite beam, and the steel frame at the support The bone or plastic bone is located on the upper part of the composite beam, and the prestressed tendons are arranged in the composite beam along the length direction; the prestressed tendons pass through both sides of the core column at the beam-column node, and are tensioned and anchored at the end of the composite column. The invention can obviously reduce the cross-sectional size of the column, and avoid excessive fat columns in the system; the prestressed tendon in the composite beam can generate uniformly distributed reaction force to offset part of the external load.

The invention discloses a continuous rigid frame bridge based on a steel truss-concrete slab composite beam. The continuous rigid frame bridge comprises a bridge substructure and the steel truss-concrete slab composite beam supported by the bridge substructure. The steel truss-concrete slab composite beam comprises a steel truss and a concrete bridge deck which is laid over the steel truss. The steel truss comprises one or more steel truss units; each steel truss unit is an inverted-triangle truss girder, wherein the inverted-triangle truss girder is composed of two upper chords, a lower chord, a left line of diagonal web members and a right line of diagonal web members, each upper chord comprises a first horizontal steel plate and a plurality of first vertical perforated steel plates evenly laid on the first horizontal steel plate, an upper chord transverse connecting system connected between the two upper chords comprises a plurality of upper chord transverse connecting pieces, and each upper chord transverse connecting piece comprises a second horizontal steel plate and a plurality of second vertical perforated steel plates evenly laid on the second horizontal steel plate. The continuous rigid frame bridge is simple in structure, reasonable in design, convenient to construct, good in stress performance, good in using effect and capable of effectively solving various problems existing in an existing continuous rigid frame bridge.