Experimental Research on Corrosion Characteristics of Steel Trestles in Marine Environment and Its Stability Bearing Capacity Analysis

CHENG Wei

doi:10.13204/j.gyjzG22050702

Volume 53 Issue 2

Feb. 2023

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CHENG Wei. Experimental Research on Corrosion Characteristics of Steel Trestles in Marine Environment and Its Stability Bearing Capacity Analysis[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(2): 151-156,223. doi: 10.13204/j.gyjzG22050702

Citation:

CHENG Wei. Experimental Research on Corrosion Characteristics of Steel Trestles in Marine Environment and Its Stability Bearing Capacity Analysis[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(2): 151-156,223. doi: 10.13204/j.gyjzG22050702

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Experimental Research on Corrosion Characteristics of Steel Trestles in Marine Environment and Its Stability Bearing Capacity Analysis

doi: 10.13204/j.gyjzG22050702

CHENG Wei

China Railway Construction Fourth Bridge Engineering Bureau Group No. 4 Engineering Co., Ltd., Harbin 150000, China

Received Date: 2022-05-07
Available Online: 2023-05-25
Publish Date: 2023-02-20

Abstract

Abstract

Based on the steel trestle of Pingtan Straits Rail-cum-Road Bridge, the corrosion status of the steel pipe piles in the deep water-bare rock area was investigated. Firstly, the steel plates under corrosion were sampled on site, and the surface morphology of the steel plates was measured, and then the steel pipe piles were simplified into the stepped columns for analysis according to the depth distribution of steel pit corrosion. Finally, the refined finite element model considering the pit corrosion was established based on the field test results, and the stability bearing capacity of the corroded steel pipe piles was analyzed. The results showed that a non-uniform corrosion distribution along the column height could be observed on the corroded steel pipe piles in the marine environment, and the maximum corrosion depth in the splash zone could be 5 times of that in the full immersion zone. The steel pipe piles could be simplified as the stepped columns with variable cross-section, and the formula for calculating the effective length of stepped columns was proposed. The finite element model of stepped columns could be used as the simplified model to analyze the stability bearing capacity of corroded steel pipe piles, which could provide a reference for the future research on the working performance of corroded steel trestles.
- steel trestle,
- corrosion,
- surface morphology,
- variable cross-section column,
- stability bearing capacity

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References(18)

References

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