论文部分内容阅读
相较于其他的土木建筑,铁路桥面的防水层会受到更许多形式的损坏,其中最为多见的缺陷就是局部产生破损点。桥面的防水层局部位置受到破坏之后,防水层和桥面混凝土表面会长期爱到水份的浸湿而发生脱落,最终导致脱落面持续扩大造成部分面积的空鼓,在防水层形大量积水,这些积水在受到行车动荷载的作用之后,会产生脉冲水压,这种现象不断往复后产生的压力就会致使防水层脱落面积不断扩大,最后溶蚀破坏到混凝土。本文主要就铁路桥涵专用高聚物改性沥青防水卷材的性能和具体应用进行分析。
Compared to other civil engineering, the waterproof layer of the railway bridge deck is subject to more forms of damage, the most common of which is the local production of damage points. Defective local position of the waterproof layer of the bridge deck, the waterproof layer and bridge deck concrete surface will be long-term love to the moisture soaking and shedding, eventually leading to the shedding surface continued to expand to cause some area of hollowing, Water, the water accumulated by the driving load after the action, will produce pulsating pressure, the phenomenon of this phenomenon after repeated reciprocation will cause the waterproof layer shedding area continues to expand, and eventually erosion and destruction of concrete. This paper mainly analyzes the properties and specific application of modified bitumen membrane for railway bridges and culverts.