无缝线路高温期间应放散施工设计毕业设计.doc

湖南高速铁路职业技术学院 毕业设计 （ 2016 届） 题 目：无缝线路高温期间应力放散施工设计 系（部）： 铁道工程系 专业班级： 铁工1302 姓 　 名： 伍治衡 指导老师： 徐红叶 袁科慧 2015年 6 月 10 日 摘 要 随着我国铁路的不断提速，对线路的要求越来越高，现都采用跨区间无缝线路来实现提速目的的，而无缝线路应力放散与锁定是跨区间无缝线路施工的最后关键工序。应力放散是拆除单元轨节的扣件，解除约束，抬上辊筒，通过辊筒、拉轨器、撞轨器、小锤等工具，使积累在单元轨节内的温度力得到释放，然后落槽，上好扣件锁定，保证钢轨在锁定轨温下达到零应力状态。应力放散与线路锁定有辊筒放散法和拉伸放散法两种。线路经应力放散和焊接锁定后形成无缝线路。 无缝线路的应力放散与调整，就是要把在没有允许锁定轨温范围以内锁定的无缝线路，以及在运营中锁定轨温发生了变化的无缝线路，通过应力放散或调整锁定轨温，重新准确地设定在设计允许范围之内。因此，了解无缝线路钢轨的应力不均匀状况，对指导无缝线路应力放散具有十分现实的意义。 关键词：无缝线路 应力放散 锁定轨温 施工安全 施工质量 Abstract As China continues to speed railway, the increasingly high demand on the line, now cross-CWR are used to achieve the purpose of speed, and stress releasing and locking the cross-CWR Construction The last key process. Stress relief is the removal unit track section fasteners, untying, carried to roll through the roll, pull track, hit the rail, a hammer and other tools that enable accumulated in the rail section of the temperature power unit to be released, then off groove, having a good locking fasteners to ensure rail reaches zero stress state under the lock rail temperature. Stress relieving and track locking has two rollers and stretching diffuse emission method. Line after stress relief and post-weld a seamless line lock.Stress relieving and adjustment of CWR, is not allowed to put in the lock rail temperature within the range of CWR lock, and locking in the operation of the rail line wen fasheng seamless changes, stress relief or adjustment by locking rail temperature, re-designed to accurately set within the allowable range. Therefore, understanding the stress uneven situation CWR rail to guide stress releasing great practical significance. Keywords: stress releasing lock rail temperature Construction Safety Construction Quality 目 录 1. 绪 论 1 1.1 研究背景 1 1.2 研究应力放散施工组织