A Study On Reverse Construction Method Of Underground Structure

Based on the present situation of top down construction for underground engineerings, the author illustrated the advantages, disadvantages and technology of top down construction and analyzed some key problems for top down construction.Bing top down construction is carried out in the JINDIDA Building of Shanghai, the underground structure construction, including soil engineering, concrete casting and formwork, becomes more complicated and more strict. The paper gives a detailed research on the problems, and brings forward corresponding solutions. The monitor of the deep pit is also the important problem to the top down construction. The paper also introduce the monitor method for top down construction.At last, according to the practice projects, the thesis gives a particular introduction for the application of construction process and the application effect of the top down construction-saving the investment and shortening time and creating greater economic benefit and social benefit for construction projects. And the author also put forward several proposals about top down construction in the paper, as well as summarized and advanced the developing trend of top down construction and the problems which should be made greet efforts to solve.