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Design and construction of scour protection for deep-water group pile foundation structures of two pylons in the Sutong Bridge project
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作者 He Ping Guan Yijun Zhang Xiongwen Zhang Qun Zhou Jianhua 《Engineering Sciences》 EI 2009年第1期37-44,共8页
Sutong Bridge,as a world-record cable-stayed bridge with its main span exceeding 1 000 m constructed in Yangtze River estuary region in China,is located at a site with complicated hydrologic conditions and poor geotec... Sutong Bridge,as a world-record cable-stayed bridge with its main span exceeding 1 000 m constructed in Yangtze River estuary region in China,is located at a site with complicated hydrologic conditions and poor geotechnical conditions and therefore,scour protection will be a decisive factor for ensuring smooth and successful construction of this bridge.This paper,starting from structural description of deep-water group pile foundation,analyzes impact to the bridge safety introduced by scour and its protection and further presents different solutions of scour protection for foundation structures of this bridge. 展开更多
关键词 Sutong Bridge deep-water group piles scour protection DESIGN CONSTRUCTION
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Experimental Study on Engineering Behavior of Solidified Soil for Scour Repair and Protection
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作者 WU Xiao-ni LI Ru-yu +5 位作者 SHU Jian TANG Chao CHEN Jin-jian WANG Hui-li JIANG Hai-li WANG Xiao 《China Ocean Engineering》 SCIE EI CSCD 2024年第4期625-635,共11页
A new scour countermeasure using solidified slurry for offshore foundation has been proposed recently.Fluidized solidified slurry is pumped to seabed area around foundation for scour protection or pumped into the deve... A new scour countermeasure using solidified slurry for offshore foundation has been proposed recently.Fluidized solidified slurry is pumped to seabed area around foundation for scour protection or pumped into the developed scour holes for scour repair as the fluidized material solidifies gradually.In the pumping operation and solidification,the engineering behaviors of solidified slurry require to be considered synthetically for the reliable application in scour repair and protection of ocean engineering such as the pumpability related flow value,flow diffusion behavior related rheological property,anti-scour performance related retention rate in solidification and bearing capacity related strength property after solidification.In this study,a series of laboratory tests are conducted to investigate the effects of mix proportion(initial water content and binder content)on the flow value,rheological properties,density,retention rate of solidified slurry and unconfined compressive strength(UCS).The results reveal that the flow value increases with the water content and decreases with the binder amount.All the solidified slurry exhibits Bingham plastic behavior when the shear rate is larger than 5 s^(-1).The Bingham model has been employed to fit the rheology test results,and empirical formulas for obtaining the density,yield stress and viscosity are established,providing scientific support for the numerical assessment of flow and diffusion of solidified slurry.Retention rate of solidified slurry decreases with the water flow velocity and flow value,which means the pumpability of solidified slurry is contrary to anti-scour performance.The unconfined compressive strength after solidification reduces as the water content increases and binder content decreases.A design and application procedure of solidified soil for scour repair and protection is also proposed for engineering reference. 展开更多
关键词 scour repair and protection solidified soil PUMPABILITY STRENGTH flow properties anti-scour performance
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Design and construction of Sutong Bridge deep-water main-pylon foundations 被引量:1
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作者 Ren Huixing Ouyang Xiaoyong He Maosheng Nie Qinlong Wang Xiali 《Engineering Sciences》 EI 2009年第1期30-36,共7页
This paper,from three aspects including construction conditions,foundation design and construction,introduces some considerations in the designing of main-pylon foundations and some practical measures to deal with cer... This paper,from three aspects including construction conditions,foundation design and construction,introduces some considerations in the designing of main-pylon foundations and some practical measures to deal with certain unfavorable construction conditions,such as deep water,tidal effect,soft stratum and heavy traffic,during the construction of main-pylon foundations. 展开更多
关键词 Sutong Bridge group-pile foundation DESIGN construction platform steel cofferdam scour protection
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Challenges and Innovations in the Sutong Bridge Foundation Project
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作者 You Qingzhong Dong Xuewu Wu Shouchang 《Engineering Sciences》 EI 2008年第1期15-22,共8页
This article introduces three outstanding innovations, i.e. utilization of the steel casing for the piles to establish a construction platform for Sutong Bridge's large and deep-pile groups; 5000 ton steel cofferd... This article introduces three outstanding innovations, i.e. utilization of the steel casing for the piles to establish a construction platform for Sutong Bridge's large and deep-pile groups; 5000 ton steel cofferdam lowered as a whole and used as a protective structure against impact from ship collision; Permanent scour protection. This article also presents economical and reasonable design method for large bridge foundation and explains the significance of innovation and technical integration to large and complicated project construction based on the above theory. 展开更多
关键词 FOUNDATION construction platform steel cofferdam ship collision lowering of steel cofferdam permanent scour protection
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