Abstract
A new type of prefabricated arch culvert is consisted of precast arch pieces and cast-in-place concrete bases. The shape of precast arch pieces is confirmed by catenary theory. In the case of simulating placement in layers of embankment, internal forces of arch piece structure are statically analyzed by using finite element method. The results indicate that under the designed filling height, arch pieces mainly suffer from stress and only very little bending moment and shear force acted on them. The prefabricated arch culverts have reasonable structure stress and simple installation process, which can substantially save materials and shorten project duration of culverts with obvious economic benefits, and should be promoted and applied in mine highway engineering.
Highlights
The arch is a kind of common structural style.With reference to the earlier research on arches, there are various types of arches
This paper presented an introductory study on behavior of a new type prefabricated arch culvert
The results show that: 1. Because of the effect of earth pressure, according to catenary theory, the catenary curve arch mainly suffers from pressure, with only small bending moment and shear force; it can give full play to the compressive properties of concrete
Summary
The arch is a kind of common structural style.With reference to the earlier research on arches, there are various types of arches. Hutchinson (2004) [1] research that arch culverts have had many applications in engineering, but most of them adopt the way of site construction; pipe culverts are traditional prefabricated culverts which are mostly applied, disadvantages of which are tedious installation process and unreasonable structure stress. He (2003) and Wang (2007) [2, 3] discussed a new type of prefabricated arch culvert that is consisted of precast arch pieces and cast-in-place concrete bases, the structure diagram of which is shown in Fig. The results indicate that under the designed filling height, arch pieces mainly suffer from stress and only very little bending moment and shear force acted on them
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