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Fracture and Delamination Assessment of Prestressed Composite Concrete for Use with Pipe Jacking Method

机译:预应力复合混凝土裂缝和分层评估与管道升降法

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摘要

Prestressed composite concrete pipe (PCCP) has been widely used in water-transmission line and has been proven with many advantages over pure concrete or steel pipes, such as high performance with relatively low cost for materials as well as simplified installation and construction process. Recent efforts have been made to enable the PCCP structure suitable for pipe jacking method so as to replace the conventional cut and cover method. In this way, the construction time, disturbance to nearby structures, and the cost can be greatly reduced. In this paper, we present the full-scale experimental and numerical studies of PCCP and the evaluation of fracture and delamination behaviour of the structure when it is used with pipe jacking construction method subjected to various jacking forces and ground conditions.
机译:预应力复合混凝土管(PCCP)已广泛应用于防水线,并经过纯混凝土或钢管的许多优点,如高性能,材料成本相对较低,安装和施工工艺简化。最近的努力使得能够适用于管道上的PCCP结构,以取代传统的切割和覆盖方法。以这种方式,施工时间,对附近结构的干扰,以及成本可以大大降低。本文介绍了PCCP的全规模实验性和数值研究和结构的裂缝和分层行为的评价,当施加到各种起动力和地面条件的管道施工方法时。

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