（1 铜陵市建筑工程施工图设计文件审查有限公司， 铜陵 244000; 2 铜陵市建设工程质量监督监测有限公司， 铜陵 244000）

［摘要］由于国家规范、规程和有关手册对收缩后浇带和沉降后浇带的设置、构造、配筋和沉降计算无统一规定，对于有些内容，不同规范的规定要求又不一样，甚至互相矛盾，致使在设计中使用比较混乱、关键问题交代不清，设计存在安全隐患。通过对收缩后浇带和沉降后浇带的深入探讨，较全面地回答了如下关键问题：后浇带的设置要求及相关构造；后浇带浇筑时间；结构长度超规范时是否必须设收缩后浇带；高层和裙房之间是否必须设沉降后浇带；设沉降后浇带如何控制沉降差、基础和上部结构内力如何计算等。

［关键词］收缩后浇带； 沉降后浇带； 断开模型； 整体模型； 补偿收缩混凝土； 膨胀剂； 后期沉降差； 附加内力

中图分类号：TU318， TU755文献标识码：A文章编号：1002-848X(2019)03-0038-08

Deep investigation on post-cast strip setting

Li Guosheng1,2

(1 Tongling Construction Engineering Drawing Design Review Co., Ltd., Tongling 244000, China;2 Tongling Construction Engineering Quality Supervision and Monitoring Co.,Ltd., Tongling 244000, China)

Abstract:There is no uniform regulation for the setting, construction, reinforcement and settlement calculation of shrinkage post-cast strip and settlement post-cast strip in national codes, regulations and relative manuals. For some content, the requirements of different codes are different, or even contradictory. As a result, these codes would not been  very clearly understood by many designers and are used in disorder in design; the key problems are not clear in design as well, resulting in potential safety hazard in later design. Through the deep investigation of the shrinkage post-cast strip and settlement post-cast strip, some key questions were answered in a relatively comprehensive way, such as  setting requirements and related construction of post-cast strip;  the casting time of post-cast strip; whether must shrinkage post-cast strip be designed when structural length exceeds the code; whether must settlement post-cast strip be designed between high-rise buildings and podiums; how to control differential settlement  and how to calculate the internal force of foundation and superstructure for the settlement post-cast strip designed  etc.

Keywords:shrinkage post-cast strip; settlement post-cast strip; disconnected model; integral model; expansive shinkage concrete; expanding agent; later differential settlement; additional internal force

作者简介：李国胜，学士，高级工程师，Email:693950802@qq.com。