一、概述 低坍接头是线路维修中的一项严重病害,混凝土轨枕短轨地段更为严重,给维修工作增加了很大的工作量。接头低坍造成轨枕损坏、螺栓折断,垫板串出、鱼尾板折断,雨季易造成线路翻浆冒泥。在接头维修中,现场为了延长低坍接头的维修周期,往往把接头起得很高,且重捣接头。而为了防止小腰高,经常对小腰轻捣或不捣,因而形成小腰空吊。列车通过时 I. Overview Low-slump joint repair is a serious disease line, short sleeves of concrete sleepers more serious, to the maintenance work increased a lot of workload. Low slump connectors caused damage to the sleeper, bolt breakage, pad string out, broken fish plate, the rainy season can easily lead to mud lines. In the joint repair, the scene in order to extend the low slump joint repair cycle, often the joints played high, and heavy pound joints. In order to prevent a small waist, often light pounding or pounding, thus forming a small waist hanging. When the train passed