大跨径多孔钢波纹板拱涵施工过程受力与 变形研究.

At present, the large-span porous steel corrugated plate arch culvert reinforced with composite beams of concretesteel corrugated plate (referred to as "concrete ring") has been preliminarily applied in actual projects. However, the force anddeformation characteristics in the construction process have not been studied in depth. This paper combines the in-situ test ofa9 m span steel corrugated plate arch culvert with 4 holes to monitor the mechanical behaviour of the concrete ring and the steelcorrugated plate, establish a refined finite element model, compare the force and deformation characteristics of the structure indifferent sections, and study the influence of the concrete ring on the structure. The results show that: 1) different arch spansand the presence or absence of the concrete ring have little effect on the deformation of arch culverts; 2) in the backfilling ofthe arch, the stress of the steel corrugated plate and rebar of the side span are greater than the corresponding position of themiddle span, and the maximum difference is 47.26 MPa and 49.75 MPa, respectively; 3) the concrete ring can significantlyreduce the stress of the steel corrugated plate, which is about 10% of its design strength. [ABSTRACT FROM AUTHOR]