采用无粘结钢绞线体外预应力加固钢筋混凝土梁板

丹东港大东港区货运码头钢筋混凝土梁板由于超载,下部出现不同程度裂缝。经过研究探讨,采用无粘结钢绞线体外预应力加固法对有裂缝的梁板进行加固处理,实践证明采用该方法缩窄了裂缝,又提高了承载能力,并节省费用。

Pre-stressed Outer Reinforcement of R.C.Slab Plate by Adopting Non-cohesive Steel Strand

Because of over loading, the lower part of R.C. slab plates for Dandong Port Dadong Port Area Cargo Wharf appeared cracks of different degree. After in-depth study and discussion, the method of pre-stressed outer reinforcement of the slab plates with cracks by non-cohesive steel strand was adopted. Practice proved that by this method, the cracks became narrower, the bearing capacity was improved, and cost was cut down.