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某预制厂拥有混凝土固定预应力空心板平台4块。经过多年的使用 ,平台破损严重 ,虽经多次维修 ,仍无法满足质量控制要求。 1 999年该厂采用长线预应力滑动平台施工新技术 ,对台面进行了全面改造。该长线预应力滑动平台是在新增台面混凝土中性面上配置预应力钢丝及横向分布筋 ,在
A precast factory has a concrete fixed prestressed hollow slab platform 4. After years of use, the platform is damaged severely, though after many repairs, it still can not meet the quality control requirements. In 1999, the factory adopted a new technology of construction of long-term prestressed sliding platform to completely rebuild the countertop. The long-term prestressed sliding platform is configured in the new countertop concrete neutral surface prestressed steel wire and transverse distribution of tendons in