How do continuously welded rails expand and contract? I was taught in school that that was why they were bolted together, to allow for expansion. - Quora
How is it possible, that railway tracks are welded butt to butt, without expansion joints and they still don't bulge in hot or crack in cold weather? - Quora
![PDF) AN INVESTIGATION INTO MONITORING RAIL STRESS IN CONTINUOUSLY WELDED RAILS THROUGH STRESS-FREE TEMPERATURE PDF) AN INVESTIGATION INTO MONITORING RAIL STRESS IN CONTINUOUSLY WELDED RAILS THROUGH STRESS-FREE TEMPERATURE](https://www.researchgate.net/profile/Nirmal-Mandal/publication/303805601/figure/fig2/AS:369544368541698@1465117651748/Thermal-Stress-Induced-Buckle_Q320.jpg)
PDF) AN INVESTIGATION INTO MONITORING RAIL STRESS IN CONTINUOUSLY WELDED RAILS THROUGH STRESS-FREE TEMPERATURE
![Loading components acting at a continuously welded rail during vehicle... | Download Scientific Diagram Loading components acting at a continuously welded rail during vehicle... | Download Scientific Diagram](https://www.researchgate.net/publication/259172872/figure/fig5/AS:269629889183756@1441296183905/Loading-components-acting-at-a-continuously-welded-rail-during-vehicle-passing-2.png)