预制混凝土构件脱模验算国内外标准对比  

Standards Comparison on Demoulding Design for Precast Concrete Elements

作　　者：程春森 王晓锋[2] 郑毅敏[1,3] 赵勇[1] 

机构地区：[1]同济大学土木工程学院,上海200092 [2]中国建筑科学研究院,北京100013 [3]同济大学建筑设计研究院(集团)有限公司,上海200092

出　　处：《施工技术》2016年第9期46-48,共3页Construction Technology

基　　金：国家科技支撑计划课题(2011BAJ10B06)

摘　　要：对国内外标准中预制构件脱模吸附力取值进行对比,并讨论了脱模验算控制指标和计算模型,提出了减小脱模吸附力的措施。研究结果表明,各国标准均采用等效静力荷载的方式考虑脱模吸附力,我国标准脱模吸附力取值与美国PCI手册取值相当,但比德国标准偏低;中国标准和PCI手册均要求预制构件脱模时不开裂;可采用等代梁模型对预制板进行脱模验算。The demoulding loads for precast concrete element in different standards were compared,including Chinse standards,PCI manual and Germany standard,and the control criterion and checking method for demoulding were discussed and the reducing methods for demoulding load were promoted. The results of research indicated that equivalent static load was used to consider demoulding load in the standards. The values of demoulding load in Chinese standard and PCI manual are equivalent,but they were lower than the value in Germany standard. Chinese standards and PCI manual require that precast elements should not be cracked during demoulding. Equivalent beam model could be used to check for demoulding of precast slabs.

关 键 词：混凝土 预制混凝土 脱模吸附力 脱模验算 

分 类 号：TU756.4[建筑科学—建筑技术科学]