金融大道段（西延段）原设计钢管支撑水平间距4米、竖向间距3米，对于大型器械来说开挖空间过于局限，对土方开挖效率造成一定影响。西延段原工法钢支撑预计达到2823吨左右，应用预应力装配式钢支撑可节省钢材料近312吨。与传统混凝土支撑相比，形成了多个约19米×20米的大空间，可容纳多台挖机同时进行中转、开挖作业，大大提高了土方开挖效率。
Academic Research | Latest Achievement by Professor Feng Pan and Colleagues from Southeast University Published in a Top Concrete Journal: A New Strategy for Enhancing the Ultra-Early Strength of Shotcrete
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