To investigate the mechanical behaviors of multispan
corrugated steel plate arch culvert during asymmetric backfill construction, a
case study is conducted on a multispan corrugated
steel plate arch culvert with reinforcement concrete rib in Meishan, Sichuan
province, China, a linear constitutive static finite element model considering
the effect of partial load of filling soil and large construction load is
established according to the specifications. The maximum equivalent stress and
deformation are taken as the control indices, the static response law and
structural safety of corrugated steel plate under four typical working
conditions are analyzed by comparing with the arch culvert without
reinforcement concrete rib. At the same time, considering the structural safety
affected by local stress of the arch foot, the bearing capacity of the arch
foot angle steel, high strength bolts, and ground bolts is further checked in
view of the most unfavorable condition of unilateral backfill to the crown. The
results reveal the following: (1) The reinforcement concrete rib can improve
the mechanical response of corrugated steel arch culvert, the maximum
equivalent stress is reduced by 5 %~8 %, and the maximum deformation is reduced
by 17.0 %. (2) When unilateral filling to the crown, the minimum thickness of
soil covered on the crown above 0.5 m should be ensured; when a large area of
overall backfill is conducted, the minimum thickness of soil covered on the
crown is at least 1 m, which is less than the specified value in the
specifications.
QI Zhihe
,
LIU Rui
,
CHEN Yuke
,
CHEN Tao
,
LIU Haiyang
,
FAN Zheng
,
ZHANG Xun
. Construction Mechanic Behaviors of a MultiSpan
Corrugated Steel Arch Culvert[J]. Tunnel Construction, 2022
, 42(S2)
: 132
-140
.
DOI: 10.3973/j.issn.2096-4498.2022.S2.016
