ABSTRAK
Jembatan segmental dengan sistem beton prategang menjadikan sambungan kuncigeser sebagai media penghubung yang penting untuk diperhatikan. Penelitian inimembahas sambungan kunci geser tanpa perekat bermaterial baja mutu sedangserta mensimulasikan berbagai variasi parameter untuk melihat perilaku darisambungan kunci geser. Pemodelan dilakukan menggunakan software ANSYSdengan dua tipe pemodelan. Hasil penelitian pemodelan tipe 1 menujukkan bebanpotensi kegagalan beton dan kunci geser meningkat jika kombinasi mutu beton danbaja mutu sedang, gaya prategang, kemiringan tendon prategang serta jumlah kuncigeser semakin besar. Hubungan tegangan utama serta tegangan geser terhadapperpindahan vertikal, pemodelan tipe 2 menunjukkan adanya osilasi pada tegangangeser setelah melewati nilai maksimum dan kemudian meningkat.

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ABSTRACT
The development of segmental bridge with prestressed concrete systems makeshear key joint as connection media that is important to note. This study discussedabout dry joint-shear key with the material used was medium-grade steel andapplying several parameters to see the behavior of the shear key joint. Modelingimplemented using ANSYS software with two type of material model. The resultsin modeling type 1 showed that potential load of concrete and shear key would begreater if combination of the grade of concrete and medium-grade steel,prestressing force, angle of prestressing tendon, and number of shear key wereincreased. Principal stress and shear stress compared with vertical displacementrelations, in modeling type 2 showed an oscillation in the shear stress after passedthe maximum value and then increased.