The tensioning of the steel wires is the key step in the construction process, improper tensioning sequence may result in the destroy of the structure in the constuction process.

• 预应力施工对于预应力弯箱梁桥至关重要,而预应力钢束的张拉是弯箱梁施工中的关键工序,不合理的张拉次序严重的甚至会导致结构的破坏。