Numerical Simulations of Modal Tests on Yingzhou Bridge Using a Passing Vehicle as the Excitation

Fan, Jiajun; Xiao, Z.H.

doi:10.1007/s40799-021-00484-y

Cited by 4 publications

(3 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The good agreements between the fundamental frequencies identified for Renyihe Bridge in different cases by the present study support the contention presented in Ref. [17]. The result measured at the mid-span of fourth main span in the 20 km/h vehicle speed case should also be close to the results measured for other cases.…”

Section: Field Experimentssupporting

confidence: 92%

“…The results are shown in Table 1 and Figure 3. As can be seen in Table 1, the 1st~18th order natural frequencies calculated using the initial FE model of Renyihe Bridge are distributed uniformly in the frequency interval 0.7-7 Hz, and most of them are greater than 1 Hz, indicating that the vehicle excitations with the energies roughly in the range 2.85-11.8 Hz [17] usually cannot excite the structure's low-order (1st~9th order) resonances. According to Figure 3, all mode shapes calculated for Renyihe Bridge are the girder's vertical bendings, symmetric or antisymmetric.…”

Section: Engineering Background and Numerical Modelmentioning

confidence: 99%

“…According to Ref. [17], for bridges excited by passing vehicles, the natural frequencies of the actual system should be independent of excitations and measurements. The good agreements between the fundamental frequencies identified for Renyihe Bridge in different cases by the present study support the contention presented in Ref.…”

Section: Field Experimentsmentioning

confidence: 99%

See 2 more Smart Citations

Effects of Vehicle Speed on Vehicle-Induced Dynamic Behaviors of a Concrete Bridge with Smooth and Rough Road Surfaces

Dai,

Cui,

Zhu

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

According to a previous study, a concrete bridge bearing vehicles traveling at lower speeds suffers from more severe apparent damage compared to one bearing vehicles traveling at higher speeds. The authors of the study subjectively inferred that the observed phenomenon is due to different vehicle load-holding durations for different vehicle speeds. However, this interpretation is not true for bridges with a smooth road surface. Based on an engineering case study of Renyihe Bridge (a concrete rigid-frame continuous highway bridge with spans of 80 m + 4 × 145 m + 80 m), this article reveals via numerical simulations that with the increase in road surface roughness, the resonant responses of the bridge are significantly amplified for cases of low vehicle speed, which can well explain the phenomenon observed by the aforementioned study. Field experiments undertaken on Renyihe Bridge further reveal the related mechanism. These experiments reveal that the frequency of the vehicle excitation for a bridge with sufficient road surface roughness might be closer to the low-order natural frequencies of a bridge with a decrease in vehicle speed. Therefore, the resonant responses are supposed to be more significantly amplified in cases of low vehicle speed after an increase in road surface roughness.

show abstract

Section: Field Experimentssupporting

confidence: 92%

Section: Engineering Background and Numerical Modelmentioning

confidence: 99%