Study on Design and Construction of Steel Casing for Bridge Pier Foundation
In order to improve the construction quality and efficiency of bridge pier foundation,the key points of steel sleeve box design and construction key technologies of bridge pier foundation are introduced in detail through a bridge reconstruction and expansion project in Wuhan,Hubei Province,and the construction effect is evaluated.The results show that the slump and slump expansion of the steel sleeve bottom seal-ing concrete are 195 mm,450 mm,3 d and 28 d compressive strength are 28.6 MPa and 54.3 MPa,respectively,and the safety factors of an-ti-floating and anti-sinking of the steel sleeve are 0.21 and 0.56,respectively,which meet the requirements of the specification.After the construction,all the test indexes are within the range required by the design scheme,indicating that the steel sleeve design and construction scheme adopted in the project is reasonable and reliable.
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