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众所周知,混凝土因其价格低廉、使用方便的特点,已成为当今世界建筑结构中使用最广泛的建筑材料。但它存在抗拉能力差,容易开裂的缺点。有些裂缝在使用荷载或外界物理、化学因素的作用下,不断产生和扩展,使混凝土的强度和刚度削弱,耐久性降低,严重时甚至发生垮塌事故,危害结构的正常使用。本文主要对混凝土桥梁裂缝的主要种类和产生的原因作较全面的分析、总结,以便设计单位和施工单位在裂缝问题上多加控制和防治,保证工程质量。
As we all know, because of its low price and easy to use, concrete has become the most widely used building material in the world’s building structures. However, it has the shortcomings of poor tensile strength and easy cracking. Some cracks in the use of load or external physical and chemical factors under the action, continue to produce and expand, so that the strength and rigidity of concrete weakened, reduced durability, serious or even collapse accident, endanger the normal use of the structure. In this paper, the main types of cracks in concrete bridges and the causes of a more comprehensive analysis and summary, so that the design unit and the construction unit in the cracks more control and prevention and control to ensure project quality.