완충구간을 갖는 일체형 철도교대의 수평하중 재하 시 거동 분석

초록

The integral abutment (IA) with buffering zones is a technology that pre-constructs backfill before abutment construction. It can reduce the maintenance cost owing to the decrease in the residual settlement of the backfill after opening. Furthermore, it can reduce the construction cost owing to the decrease in the horizontal earth pressure on the abutment. In this study, to evaluate the modulus of horizontal subgrade reaction in the passive pressure for the design of IA, a half-scale testbed was designed and constructed. A horizontal load test with the maximum load of 1,500 kN was conducted. To verify the test result, the behavior of the IA under horizontal loads was analyzed using finite element analysis. The modulus of horizontal subgrade reaction of the IA using a half-scale test and numerical analysis was estimated to be 36,706 kN/m3 and 32,746 kN/m3, respectively.

키워드