Effectiveness and Maintenance of 2-Hinged Precast Arch Culvert (Modularch)
By T. Taga, S. Fujihara and Y. Sawamura
Concrete Journal, Vol.58, No.2, Feb. 2020
- Synopsis
- The Modularch construction method consists in constructing an arch culvert with a large cross section by using modular precast members. Unlike rigid culverts, culverts built with this construction method employ hinges at the boundaries of the precast members, resulting in a structure that is easily affected by the surrounding ground conditions. Therefore, the Technical Manual was revised to incorporate findings based on closer scrutiny of appropriate use conditions, verification of stability during earthquakes, large shaking table tests for the purpose of ultimate state verification, and cyclic alternating positive-negative loading tests, among other things. In addition, for the purpose of contributing to practical maintenance, the main points of maintenance considering the structural characteristics of this construction method were also revised.
- Keywords:
- Precast, Arch culvert, Hinge, Seismic performance, Maintenance
