Research Progress on Post Cast Strip Construction Technology of Super Long Concrete Structure

2021 4th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA) Pub Date : 2021-11-12 DOI:10.1109/ISTTCA53489.2021.9654569

Changming Hu, Ting Wang, Shouzhong Lin, X. Zhao

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Abstract

The construction technology of post cast strip seriously affects the construction quality and structural safety. The current specifications do not give uniform and clear provisions on the width of post cast strip. This paper briefly expounds the current situation, advantages and disadvantages of post cast strip construction, and compares and analyzes the construction processes, applicable conditions, advantages and disadvantages of fast and easy closing net, inflatable core formwork and bubble membrane formwork; Wang tiemeng model is used to calculate the effect of post cast strip width on concrete shrinkage on both sides. The results show that the post cast strip width has little effect on shrinkage. The post cast strip construction technology of PVC pipe is proposed, which can improve the construction quality and realize green construction. Therefore, combined with the innovative post cast strip construction technology and specific working conditions, its width can be set optimally.

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超长混凝土结构后浇条施工技术研究进展

后浇带的施工工艺严重影响到施工质量和结构安全。现行规范对后铸钢条的宽度没有统一明确的规定。简要阐述了后浇条施工的现状、优缺点，并对快速易闭网、充气芯模板、气泡膜模板的施工工艺、适用条件、优缺点进行了比较分析;采用王铁萌模型计算后浇条宽度对两侧混凝土收缩的影响。结果表明，后浇铸带宽度对收缩率影响不大。提出了PVC管材后浇铸条施工工艺，提高了施工质量，实现了绿色施工。因此，结合创新的后浇带施工技术和具体的工作条件，可以对其宽度进行最优设置。

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2021 4th International Symposium on Traffic Transportation and Civil Architecture (ISTTCA)

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