Construction technology of steel sheet pile cofferdam for Yellow River Channel internal support table construction

Abstract

The invention discloses a construction technology of a steel sheet pile cofferdam for Yellow River Channel internal support table construction. A construction support table is an underwater support table arranged in a Yellow River Channel. The technology comprises the following steps of firstly, determining a structure and the size of a used cofferdam in the process of underwater support table construction; secondly, surveying and setting out; thirdly, constructing the cofferdam; fourthly, constructing a bored pile at the bottom of the support table; fifthly, constructing the support table: carrying out forming construction of the underwater support table on the top of the bored pile after construction when the bored pile construction is finished, and finishing integrative construction of the bored pile and the underwater support table; and sixthly, constructing a pier column at the upper part of the support table. The invention has the advantages of reasonable design, convenient construction and low construction cost, carrys out construction by adopting an integrative construction method of the support table and the bored pile and can efficiently solve the defects of long construction period, large investment, needs of setting up a plurality of construction platforms, large construction difficulty and the like in the successive construction process of the bored pile and the support table in the traditional construction process of the steel sheet pile cofferdam.

Description

technical field [0001] The invention belongs to the technical field of cap platform construction in the Yellow River channel, and in particular relates to a steel sheet pile cofferdam construction process for the cap platform construction in the Yellow River channel. Background technique [0002] With the rapid growth of my country's economy and the continuous increase of national infrastructure, the strategy of "replacing ships with bridges" will be implemented-all pontoon bridges on the Yellow River will be replaced by the Yellow River Bridge. However, in the middle and upper reaches of the Yellow River in my country, there is a flood season in the Yellow River, and the floodplain area is very large. The design scheme of the steel sheet pile cofferdam and the underwater foundation cleaning method can be applied to the construction of the bridge in the middle and upper reaches of the Yellow River. [0003] The Baotou City Stengkou Yellow River Bridge is 6355m long and is lo...

AI Technical Summary

Problems solved by technology

When the existing construction methods of pier caps in water are used for construction, the bored piles at the bottom of the caps are usually constructed first, and then the construction of the caps and the upper piers of the caps is completed on the top of the completed bored piles. Therefore, there are many defects and deficiencies such as long construction period, cumbersome construction procedures, and large investment in manpower and material resources.

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