Abstract:The double row steel sheet pile cofferdam has the advantages of small floor area, convenient driving and demolition, and little impact on river water quality. It has obvious advantages over the traditional earth rock cofferdam when the water retaining height is not too high. It has been widely used during the diversion and closure of water conservancy projects all over the country. However, because it is only a temporary structure, it is often designed according to experience, and there is a lack of research on the internal force calculation of this kind of structure. If we need to get accurate structural internal force, we need finite element analysis, which can not meet the practical needs of designers. Based on the stress analysis of this structure type, the calculation equation of double row steel sheet pile cofferdam is calculated by using the traditional earth pressure theory and m method, and the calculation results are verified by comparing with the finite element calculation method.
