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平屋面砖混结构房屋顶层预制混凝土板发生错动变形北京铁路局太原勘测设计院殷艳现象平屋面砖混结构房屋竣工使用一年左右后，经常发现顶层预制混凝土板的支承端与圈梁或屋面大梁的接触面处发生水平方向的裂缝，裂缝在靠近屋檐处较屋脊处严重，在通常情况下并伴有预制混凝...
Distortion of precast concrete slabs on top of masonry-concrete mixed-story flat roof Beijing Railway Bureau Taiyuan Investigation and Design Institute Yin Yan Phenomenon Flat-roofed brick-concrete structure After the completion of a year or so of construction, the supporting end of the precast concrete slab and the ring beam are often found. Cracks in the horizontal direction occur at the contact surface of the roof girder. The cracks are more severe near the eaves than at the ridges. In the usual case, there is precast coagulation...