The mechanics of arching in induced trench construction – a new theoretical formulation

Full-scale experimental case studies have shown that the induced trench construction method effectively reduces vertical earth load is exerted on culverts installed beneath high embankments. Induced are traditionally designed basis of Marston’s theory; however, various theoretical shortcomings this formulation recently come to light. In paper, a new presented. The proposed analytical model employs inclined shear planes within embankment fill; such geometry consistent with findings reported in literature and leads positive arching resulting from reduction stress an increase horizontal (thus increasing lateral pressure coefficient zone). A series parametric performed using finite element software. be good agreement numerical results, correlations developed provide guidance selecting appropriate values (i) (ii) height plane equal settlement. Two instrumented full-scale discussed, produce results data.