无缝线路高温期间应力放散施工设计毕业设计.docx

2015 2015 年_6—月10 日 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 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 con ti nues to speed railway, the in creas in gly high dema nd on the line, now cross-CWR are used to achieve the purpose of speed, and stress releasing and locking the cross-CWRConstruction 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 hammerand other tools that enable accumulated in the rail sect ion of the temperature power unit to be released, then off groove, having a good locking fasteners to ensure rail reaches zero stress state un der the lock rail temperature. Stress relievi ng and track lock ing has two rollers and stretchi ng diffuse emissi on method. Line after stress relief and post-weld a seamless li ne lock. Stress relieving and adjustment of CWRjs not allowed to put in the lock rail temperature within the range of CWRbck, and locking in the operation of the rail line wenfasheng seamless changes, stress relief or adjustment by locking rail temperature, re-desig ned to accurately set within the allowable ran ge. Therefore, understanding the stress uneven situation CWRail to guide stress releas ing great practical sig nifica nee. Keywords: stress releas ing lock rail temperature Con structi on Safety Con structi on Quality TOC \o 1-5 \h \z \o Current Document 绪论 4 \o Current Document 研究背景 4 \o Current Document 研究应力放散施工组织的意义 4 \o Current Document 应力放散施工组织 5 \o Current Document 施工前准备工作 5 \o Current Document 施工组织 9 \o Current D