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南京国际展览中心2层楼面尺寸为270m×118.5m，梁内施加有粘结预应力，板内施加无粘结预应力，不设伸缩缝。根据施工阶段梁板混凝土内部温度、温度应力以及施加预应力后混凝土预压应力的监测，对其监测结果作出分析，研究大面积预应力混凝土楼面及其超长预应力大体积混凝土梁的裂缝控制技术。,The Nanjing Intational Exhibition Center’s second floor with bonded prestressed beams and unbonded prestressed floof, is 270m long, 118.5m wide, and doesn’t set expansion joint. According to the construction measuring, the author analysises and researches the cracking-control technology of the large-area prestressed concrete floor and the super-long prestressed mass beam.