[en] The geological disposal facilities for TRU waste in Japan envisage the use of cement as structural materials together with compacted bentonite as engineered barriers to retard nuclide migration. It is necessary to evaluate deformation from the long-term mechanical analysis of the cement-based material, bentonite and surrounded host rock for the safety assessment of the geological disposal. We developed mechanical analysis code (MACBECE: Mechanical Analysis considering Chemical transition of BEntonite-based and Cement-based materials) considering the mechanical behavior of the facility and the host-rock in the phase of the construction, the operation and the post-closure of TRU waste disposal facility. This report shows the capability, incorporated mechanical model and sample calculation of MACBECE. MACBECE incorporated the non-liner elastic model for cement-based material, the elastoviscoplastic model considering swelling of bentonite-based material and the visco-elastic model reported by Okubo for host-rock. Furthermore, MACBECE can consider the time dependency of mechanical properties of cement-based and bentonite-based materials with their chemical transition. (author)