The earthquake resistant experimental research on knee joint of concrete structures with short flanged wall and unbonded prestressed slab;

On the basis of two dimensional nonlinear finite element analysis of reinforced concrete programmed by the first author,full range analysis of knee joints in the frame and adjacent beams and columns is carried out.

Consulting with the Recommendations for Design of Beam-Column Connectionsin Monolithic Reinforced Concrete Structures(ACI352R-02) of the United States andConcrete Structure Design Code(GB50010-2002) of China, three full-sca le beamcolumnknee joints of reinforcement concrete frame structure with differentreinforcement were tested under low-cyclic reversa ls.

Finite element analysis on the behavior of top story knee joint of concrete structures with short shear walland unbonded tendons prestressed slab;

At first it studies mainly the bearing seismic capacity and bars’ detail arrangement of four top story knee joints for the concrete structure system.

Theoretical analysis on shearing strength of top story exterior joints in R.C. frame structure with special-shaped columns;

Experimental results on top of column joints in RC frames, are collected and analyzed,with the edition of industrial standard,“technology rules for joints in reinforced concrete frames”,of the Ministry of construction.

Relevant provisions on seismic check of interior top column joints in the former Design Code of Reinforced Concrete Structures (GBJ10—89),were based on experiences,not on reliable testing data.