某铁路线涵洞病害原因分析与加固技术研究

Analysis of the Causes of the Defects of a Railway Culvert and Study of Their Reinforcing Techniques

针对某铁路线K549+014涵洞出现沉降缝处剥落露筋,边墙剥落露筋,中墙沉降缝周围砼鼓起、剥落,砼腐蚀风化严重,沉降缝普遍渗水泛白等病害现象,提出了对应的套涵加固技术,论述了该方法的施工工艺、技术要求及适用性。实践证明,该方法应用于铁路涵洞加固,不影响运输,投资少,施工安全快捷,对类似的工程有重要的参考价值。

Aiming at overcoming or repairing the defects of the culvert of K549 ＋ 014 of a Railway,such as peeling-off at the settlementjoints and the exposure of the reinforcement, peeling-off of the side wall and the exposure of the reinforcement, theswelling and peeling-off of the concrete around the settlement joints of the mid-wall,the serious erosion of concrete and badly weathered concrete the wide permeation of water and whitening around the settlement joints etc. some corresponding effectiveconsolidating techniques, such as scope-type culverts,are put forward in the paper, with the construction processes,technical requirementsand adaptability of the methods dealt with in detail. Practice shows that the application of the techniques to consolidatingrailway culverts is cost-saving, quick and safety-ensuring in construction and has no effect on the normal transportation.It may serve as an important reference for other projects of similar types.