流态水泥粉煤灰浆在台背回填中的应用

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1、摘要桥头跳车是一种由构造物与台背路堤不均匀沉降引起的公路常见的病害，也是多年困扰公路行业的一大难题。论文通过对桥头过渡段病害的调查并查阅了大量国内外文献资料，在此基础分析了桥头跳车的危害性及桥头跳车的原因；根据不均匀沉降的形式，分析了桥头跳车的机理；台背路堤沉降包括地基变形沉降和路堤填土自身变形压缩两方面内容，推导了两者变形沉降的计算方法，探讨了压实度、填土高度与沉降量的关系；研究了流态水泥粉煤灰台背回填的理论基础，对其力学性能进行了试验分析，结合徐州地区的典型填料提出流态水泥粉煤灰台背回填的原材料及其配合比设计，为解决

2、桥头跳车的通病提供了新的解决方案；并以舒适性和安全性为原则提出了台背路基的变形控制标准，以及其稳定性的校核理论；在此基础上，从地基处治、台背路堤、路面处治以及排水措施等方面研究了桥头跳车综合防治技术。关键词：桥头跳车、台背回填、台背路堤、流态水泥粉煤灰浆、防治措施AbstractThephenomenonofvehiclebumpateitherendofabridgeisoneoffamiliarhighwaydistressandadifficultproblempuzzlingengineersformanyyea

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8、，ere．Keywords：bridgeheadbump；backfilling；measurementpreventionandcure；embankmentofbehindabutment；fluidstatefly—ashcement论文独创性声明本人声明：本人所呈交的学位论文是在导师的指导下，独立进行研究工作