钢弹簧浮置板轨道施工

研究目的：钢弹簧浮置板轨道可解决城轨列车运行产生的振动和噪声问题，而浮置板轨道的施工是影响其减振降噪功效的主要因素，因此特作探讨。 研究方法：按照理论联系实际、设计指导施工、施工优化设计的研究方案，结合工程实例，按施工的先后顺序，详细阐述钢弹簧浮置板轨道的施工工艺，并对重点环节加以强调，明确施工过程中应注意的问题。 研究结论：本施工方案先进成熟，与传统施工方法相比，对浇注道床底板混凝土环节要求更高，使隔振器基础更加坚固；采用专门设计的支撑架架设钢轨，可更方便地调整钢轨状态，从而保证施工精度；安装扣件时用木板代替橡胶垫板防止沙浆灌人垫板孔，避免了返工窝工，保证了施工进度；顶升分3～4步完成，可消除隔振器弹簧的塑性变形，保证了轨道的施工精度和隔振器的减振性能。

Construction Technique of Steel Spring Floating Slab Track

Research purposes: Steel spring floating slab track may solve the problems of vibration and noise caused by the running train on intercity railway,but the construction quality of steel spring floating slab track is a main factor influencing the efficiency of reducing vibration and noise,so it is necessary to do the research on it.Research methods:Based on the principles of integration of theory with practice,design guiding construction and construction optimising design,and in combination with the practical example,the explanation is given to the construction technique of steel spring floating slab track from the order of construction procedure,the key links are focused on and the issues for attention in construction are made clear.Research conclusions:Compared with the traditional construction technique,this construction technique is more advanced and mature with high requirement of grouting concrete into the bottom slab of roadbed to make the foundation of vibration isolator firmer.A special support shelf is designed for adjusting rail easily when laying rail so as to ensuring the construction quality.When the fastenings are installed,the rubber gasket is replaced by wood gasket for keeping mortar from going into the gasket hole,and avoiding reconstruction and waste time in order to ensure the construction procedure.The jack-up should be implemented by three or four steps so as to reduce or eliminate elastic deformation of the spring of vibration isolator for the purpose of ensuring the construction quality and the reduction performance of vibration isolator.