The object of this paper is te make clear the shear trunsfer rnechanisrn and the shear displacement behavior in the connection ofHalf Precast RC member ． The experiment and the 2 − D Ilon − liner finite element analysis were pe formed en the RC beam with h〔πizontaljoint ， The s 加 dy f()r five specimens whose parameters werejoint steei bars and conerete shear −key was carried out ． lhe results are as followed ． Tlie influence of shear resistance elerneritS was examinOd based on our severa1 experimental studies ． The shear transfer mechanism and 血e shear displacement behaVior at the interface can be eXplained by the author ' s model ofshearing fbrce − shear displacement relatienship in conneCtion ofprocast concrete ，

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