高温天气下盖梁开裂病害规律分析及处治方案

Analysis on Cracking Disease Patterns of Bent Caps under High-temperature Weather and Treatment Schemes

摘要:

随着极端天气气候事件的增多，桥梁病害形式越来越复杂，因此对病害成因及规律分析越来越重要，以确定处治方案。由于持续高温天气影响、伸缩缝堵塞等因素影响，上海某空心板梁桥部分盖梁侧面及底面检测出裂缝，病害特征较为少见。发现病害后，通过现场桥梁检测及结构计算，掌握了病害成因及规律，确定了处治方案。盖梁病害处治桥梁检测成果全面，病害成因及规律分析准确，处治方案合理，效果良好，可为类似病害分析和处治提供参考经验。

Abstract:

With the increasing frequency of extreme weather events, bridge disease patterns have become more complex. Therefore, it is more important to analyze the disease causes and patterns in order to determine the treatment scheme. Due to the influence of continuous high-temperature weather, blockage of expansion joints and other factors, cracks were detected on the side and bottom surfaces of some bent caps of a hollow slab beam bridge in Shanghai. The characteristics of the disease are relatively rare. After the diseases are found, through the detection and structural calculation of the bridge on site, the causes and patterns of the diseases are mastered, and treatment scheme is determined. The bridge detection results for the treatment of bent cap diseases are comprehensive, the analysis of the causes and patterns of the diseases is accurate, the treatment scheme is reasonable and the effect is good, which can provide the reference and experience for the analysis and treatment of the similar diseases.