大型渡槽三向预应力槽身结构设计

南水北调中线工程属特大型跨流域调水工程,由于工程的重要性及工程规模的庞大,采用常规钢筋混凝土结构不但不易解决槽身结构防渗抗裂的问题,还将造成槽身结构的槽壁与底板等很厚,大大增加自重,引起上部结构以及下部结构工程量的大大增加。因此槽身结构采用三向预应力混凝土结构体系,利用预应力施工技术,充分发挥材料的性能,在满足材料强度及结构使用条件的前提下,使工程经济合理。

Three-Dimensional Prestressed Structural Design of Large-scaled Aqueduct Body

The mid-line of South-to-North Water Diversion Project belongs to large-scaled interbasin water diversion project.Due to its significant role and large scale,conventional reinforced concrete structure can not solve the problem of seepage and crack control of aqueduct body,in addition,it will cause thick of the wall and base plate,increasing its self-weight,and the quantities of superstructure and substructure will be increased.Therefore,three-dimensional prestressed concrete structural system is adopted.The...