现浇框架梁施工中温度变形裂缝分析与控制

• 作 者: 薛惠敏 袁小勇 薛洪 陈志明
• 机 构: 无锡市建筑工程局,无锡市郊区建筑工程质量监督站,无锡市郊区建筑工程质量监督站,无锡市郊区建筑工程质量监督站 214061
• 出 处: 施工技术
• 发表日期: 1993年11期
• 关键词: 现浇框架 温度变形裂缝 预制楼板 伸缩缝 开间 生产车间 无锡市 跨距 温差 框架梁

无锡市某厂生产车间为96m×15m的五层两跨现浇框架结构,东端有4m开间的附房,中部有伸缩缝将结构一分为二,除东西两端各有两跨间距为5m框架外,其余均为6m跨距,即整个结构为两段各长46m的8跨连续梁,承受预制楼板传递的荷载。该工程于1991年3月底开始浇筑框架,施工期间经历了年底前后最低达-12℃的连续低温环境袭击,

Wuxi City, a factory production workshop for the 96m × 15m five-story two-span cast-in-place frame structure, the eastern end of a 4m open annex, the central expansion joints will divide the structure into two, except for two ends of the East and West have two spans Outside the 5m frame, the rest are 6m spans, that is, the whole structure is two 8-section continuous beams with a length of 46m each, which are subjected to the load transmitted by the prefabricated floor slabs. The project started pouring frames at the end of March 1991. During the construction, it experienced a continuous low-temperature environment attack at a minimum of -12°C before and after the end of the construction period.