Features and mechanism of asymmetric double-kidneys scoured geomorphology of pier in tidal estuary

Lu Xuejun; Cheng Heqin; Zhou Quanping; Jiang Yuehua; Guo Xingjie; Zheng Shuwei; Wu Shuaihu

doi:10.3969/j.issn.0253-4193.2016.09.012

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Lu Xuejun, Cheng Heqin, Zhou Quanping, Jiang Yuehua, Guo Xingjie, Zheng Shuwei, Wu Shuaihu. Features and mechanism of asymmetric double-kidneys scoured geomorphology of pier in tidal estuary[J]. Haiyang Xuebao, 2016, 38(9): 118-125. doi: 10.3969/j.issn.0253-4193.2016.09.012

Citation:

Lu Xuejun, Cheng Heqin, Zhou Quanping, Jiang Yuehua, Guo Xingjie, Zheng Shuwei, Wu Shuaihu. Features and mechanism of asymmetric double-kidneys scoured geomorphology of pier in tidal estuary[J]. Haiyang Xuebao, 2016, 38(9): 118-125. doi: 10.3969/j.issn.0253-4193.2016.09.012

Citation:

Lu Xuejun, Cheng Heqin, Zhou Quanping, Jiang Yuehua, Guo Xingjie, Zheng Shuwei, Wu Shuaihu. Features and mechanism of asymmetric double-kidneys scoured geomorphology of pier in tidal estuary[J]. Haiyang Xuebao, 2016, 38(9): 118-125. doi: 10.3969/j.issn.0253-4193.2016.09.012

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Features and mechanism of asymmetric double-kidneys scoured geomorphology of pier in tidal estuary

doi: 10.3969/j.issn.0253-4193.2016.09.012

1.
State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China
2.
Nanjing Geological Survey Center, China Geological Survey, Nanjing 210016, China

Received Date: 2015-11-18
Rev Recd Date: 2016-01-11

Abstract

Abstract

Based on analyzing the natural scour near the axis of the bridge by data of topographical, this paper used a multi-beam echo-sounding system to study local scour around bridge piers. The results showed that the axis of the bridge and the riverbed near main piers presents erosion evolutionary trend. Upstream the pier, there is a serius erosion while sediments deposit at the mid of pier. Downstream the pier, weak erosion is also found. The largest scour depth of the main pier is about 4 m. The local scour shape of the main pier looks like "double kidneys". The angle of ebb coming current is 10 degree, as well as the scour depth and scope on the south side of the main pier is larger than that on the north.
- reversing tidal current,
- local scour,
- multi-beam echo sounder,
- bridge pier,
- Shanghai Yangtze River Bridge

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References(33)

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