In the deepFoundation pit supportingThe use of Prestressed fish-belly steel bracing for foundation pit, the span is generally in40~50Between meters, the maximum can be reached60Many meters, the width of the foundation pit can be reached200meter At present, the depth of the foundation pit supported by prestressed fish-belly steel is the largest29Meters, length up to500Meters above.

In the deepFoundation pit supportingIn, the number of layers of fish-belly foundation pit steel support structure is determined by the depth of foundation pit and the size of soil and water pressure, ranging from one layer to six layers.