暗渠墙体混凝土早期裂缝及应变现场监测研究

Field Monitoring of the Early Cracks of the Concrete on the Underdrain Walls

混凝土早期裂缝是国内外工程界多年关注的重点,也是至今未能有效解决的难题,这根源于其影响因素的复杂性和具体情况的多样性。对一暗渠工程的墙体早期裂缝特征进行总结,分析其产生根源,揭示导致墙体裂缝的主要控制应力。现场测试给出对应温度发展过程的墙体厚度和高度方向的应变分布和变化规律,为同类工程早期裂缝问题的分析和理解提供有益参考,也为预防和控制混凝土早期裂缝的产生提供有力依据。

The characteristics and causes of the early cracks of the concrete on a underdrain wall are summarized. The field tests indicated the strain distribution and laws of variation of the wall thickness and height direction under different temperatures, which can provide important references for tackling the early cracking problems of concrete in similar projects.