The Innovative Design of Building Engineering Top-Down's Method about the Key Node Structure

In this paper, it combined with the theory research literature on the Top-Down method's key mode design structure and successful practices, introduces the traditional design method of the Top-Down method in the construction of key nodes, is proposed the innovative design of underground deep foundation engineering construction method of inverse key nodes in the construction and the strengthening of technical measures by basing on these, and makes a comparative analysis about the evaluation of safety, the construction quality, the construction period and the project cost by using the method from the scholars and experts' investigation, finally obtains the key structural nodes construction design of the inverse innovation to comply with the relevant national standards, and the construction process is simple and feasible, to ensure the quality and safety of the project, which provides a reference for similar construction engineering design and application of key nodes structure inverse construction method.