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随着南水北调中线工程的开工,大型及特大型交叉建筑物的施工将陆续展开、许多结构将采用预应力混凝土,这样,将大大提高建筑物的搞裂性能,并节约成本,这里以T梁为例,简要介绍预应力混凝土施工的要点,其它形状的梁、板预应力施工与其有异曲同工之处。预制T梁采用50号混凝土,标准梁长30m,梁高1．9m,预应力筋为钢绞线,采用OM型预应力张拉锚固体系。
With the commencement of the mid-route of the South-to-North Water Diversion Project, the construction of large-scale and large-scale cross-boundary buildings will be gradually launched. Many structures will use prestressed concrete so that the cracking performance of buildings will be greatly improved and the cost will be saved. Example, a brief introduction to the main points of prestressed concrete construction, other shapes of beam, plate prestressed construction and its similarities and differences. Prefabricated T-beam using 50 concrete, standard beam length 30m, beam height 1.9m, prestressed tendons for the strand, the use of OM prestressed tensile anchor system.