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某工程为一在建工程，框架结构。该工程顶层屋面为现浇无粘结预应力混凝土大梁，梁截面为T型，高850mm，跨度14400mm。大梁拆侧模准备进行预应力张拉时，发现梁侧面出现裂缝。1裂缝特征顶层预应力混凝土大梁混凝土浇筑2周后拆侧模，由于发现裂缝，底摸未拆，支撑亦未动。全面检
A project is a construction in progress, frame structure. The roof of the project is a cast-in-place non-bonded prestressed concrete girder with a T-shaped cross-section, a height of 850mm and a span of 14400mm. When the beam demolition side mold was ready for prestressing, it was found that cracks appeared on the side of the beam. 1 Crack Characteristics The top layer of prestressed concrete girders was demolished after 2 weeks of concrete placement. Due to the discovery of cracks, the bottom touch was not removed and the support was not moved. Comprehensive inspection