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徐紅波
(中鐵七局集團(tuán)第二工程有限公司，西安710032)

[摘要] 隨著混凝土梁橋的不斷推廣和應(yīng)用，在公路、鐵路項(xiàng)目建設(shè)中出現(xiàn)了預(yù)應(yīng)力簡(jiǎn)支梁、連續(xù)梁以及連續(xù)剛構(gòu)等橋梁結(jié)構(gòu)形式。該類梁橋在施工和使用過(guò)程中或因質(zhì)量問題或因處置不當(dāng)致使出現(xiàn)了許多裂縫，影響梁橋美觀，更有甚者影響到使用功能。作為工程技術(shù)人員，如何做好裂縫成因分析和預(yù)防對(duì)策尤為重要。
[關(guān)鍵詞] 預(yù)應(yīng)力；混凝土梁橋；裂縫

    Causes of prestressed concrete girder bridge cracks and countermeasures
    Xu Hongbo
    (China Railway Seventh Group Second Engineering Co., Ltd., Xi'an 710032, China)

Abstract: With the continuous promotion and application of concrete girder bridge, prestressed simply supported beams, continuous beams and continuous rigid frame bridge structure and so on have emerged in road and railway projects. Because of quality problems or improper disposal, there were many cracks, and some cracks even affected the use function. As engineers, it is especially important to analyze the causes of cracks and preventive measures.
Keywords: prestress; concrete girder bridge; crack