| 王琼,叶剑涛,康星,陈东.混凝土浇筑过程中MiC墙模板动力响应研究[J].安徽建筑大学学报,2025,33(3):26-33 |
| 混凝土浇筑过程中MiC墙模板动力响应研究 |
| Study on Dynamic Response of MiC Wall Formwork during Concrete Placement |
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| DOI： |
| 中文关键词: 模块化建筑 动力响应 现场浇筑 快速傅里叶变换 数值模拟 |
| 英文关键词: modular building dynamic response cast-in-place fast Fourier transform numerical simulation |
| 基金项目:安徽省教育厅高校自然科学研究项目（KJ2021A0608）；中国建筑国际研发科技项目（CSCI-2023-Z-11-2） |
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| 中文摘要: |
| 模块化集成建筑（Modular Integrated Construction，MiC）是一种新型的装配式建筑结构体系，由预制混凝土模块通过后浇混凝土连接组成，模块墙模板即为现浇混凝土的免拆模板，平均厚度较薄（30 mm）。为了研究MiC墙模板在混凝土现场浇筑过程中的动力响应及形态变化，采用3块不同尺寸和位置的MiC墙模板作为研究对象，运用快速傅里叶变换将时域信号转化为频域信号，研究 MiC墙模板在现场浇筑过程中应变和位移变化情况，同时运用ABAQUS对现场试验进行模拟分析。结果表明：MiC墙模板中间部位的受力特征与模拟结果基本相似，其中，位于中间位置点的位移幅度最大并且最激烈，其次是上部位置。对于不同高度下的应变值，模板底部与中间位置的数值十分接近，随着中间测点处的高度不断增加，应变随之减小；在同一高度下的应变值相差不大。浇筑过程中，由于MiC墙模板侧压力过大，导致了漏浆渗水，采取及时补救措施后，应变值回到漏浆前的水平。 |
| 英文摘要: |
| Modular Integrated Construction (MiC) is an innovative prefabricated building system composed of prefabricated concrete modules connected interconnected via post-cast concrete. The module walls function as stay-in-place formwork for cast-in-place concrete, featuring a relatively thin average thickness of 30 mm. This study investigates the dynamic response and deformation behavior of MiC wall formwork during on-site concrete pouring. Three MiC wall formwork with different dimensions and positions were analyzed. Fast Fourier Transform (FFT) was employed to convert time-domain signals into frequency-domain signals, enabling the evaluation of strain and displacement variations. Additionally, finite element simulations were conducted using ABAQUS to validate the experimental findings. The results demonstrate that the stress characteristics in the middle section of the MiC wall formwork shows good agreement with numerical simulations. The maximum displacement amplitude occurs at the mid-height position, exhibiting the most significant dynamic response, while the upper section displays secondary displacement characteristics, followed by the upper section. Regarding strain distribution at different elevations, the measured values at the bottom and middle sections of the formwork were remarkably close. The casting process induced grout leakage and water seepage due to critical lateral pressure buildup on the MiC formwork system. Implementation of immediate corrective interventions successfully restored the strain parameters to baseline pre-leakage conditions. |
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