地下铁路断面大面积混凝土收缩裂缝机理及控制策略

MATEC Web of Conferences Pub Date : 2023-01-01 DOI:10.1051/matecconf/202338201016

Meilin Yu

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引用次数: 0

摘要

地下铁路断面大面积混凝土结构裂缝直接影响结构安全和使用寿命。如何采取有效措施控制混凝土收缩裂缝是工程中亟待解决的难题。针对武汉地铁某车段大面积混凝土结构裂缝的裂缝控制需求，结合已有的大面积混凝土结构工程实例、收缩裂缝机理及控制策略，从混凝土原材料和施工工艺两方面提出了相应的防止裂缝产生的措施。结果表明，通过对混凝土材料、养护、浇筑、后浇带、温度监测等环节的调控，实现了地铁区段大面积混凝土结构收缩裂缝的减少。研究结果可为类似工程减少裂缝，保证结构安全和施工质量提供参考。

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Mechanism and control strategy of large-area concrete shrinkage cracks in the underground railway section

The cracks of the large-area concrete structure in the underground railway section directly affect the structural safety and service life. How to take effective measures to control concrete shrinkage cracks is a difficulty to be solved in the project.In view of the crack control demand of large-area concrete structure cracks in a vehicle section of Wuhan metro, based on the existing engineering cases of large-area concrete structure, shrinkage crack mechanism and control strategies, the corresponding measures are proposed to prevent crack production from two aspects of concrete raw materials and construction technology.The results show that through the regulation of concrete materials,maintenance,casting,post-pouring belt, temperature monitoring and other links, the reduction of shrinkage cracks of large-area concrete structure in the underground railway section is realized.These results can provide references for similar projects to lessen cracks, ensure structural safety and construction quality.

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来源期刊

MATEC Web of Conferences

自引率

0.00%

发文量

342

审稿时长

6 weeks

期刊介绍： MATEC Web of Conferences is an Open Access publication series dedicated to archiving conference proceedings dealing with all fundamental and applied research aspects related to Materials science, Engineering and Chemistry. All engineering disciplines are covered by the aims and scope of the journal: civil, naval, mechanical, chemical, and electrical engineering as well as nanotechnology and metrology. The journal concerns also all materials in regard to their physical-chemical characterization, implementation, resistance in their environment… Other subdisciples of chemistry, such as analytical chemistry, petrochemistry, organic chemistry…, and even pharmacology, are also welcome. MATEC Web of Conferences offers a wide range of services from the organization of the submission of conference proceedings to the worldwide dissemination of the conference papers. It provides an efficient archiving solution, ensuring maximum exposure and wide indexing of scientific conference proceedings. Proceedings are published under the scientific responsibility of the conference editors.