浅谈旋喷桩在铁路桥梁基础加固中的应用

研究目的：通过工程实例的综述，阐述旋喷桩的应用范围、加固原理及其设计、施工中应注意的事项。进一步论证旋喷桩是适宜既有线使用，技术可行、经济实用、便于施工、效果明显的基础加固方法。 研究方法：紧紧围绕既有运营线的特点，采用综合分析、理论计算及实例验证，从技术性、经济性、施工对既有桥梁基础的安全影响性及加固效果等多个方面进行比较，使研究结论可信、加固效果可靠。 研究结论：旋喷桩作为一种基础加固方法，是既有运营线桥梁基础加固中适用性较广、施工较为方便、对既有基础影响较小、加固效果较好、较为经济的一种加固方法，有必要进行更加深入的研究。

Comments on the Application of Churning Jet Pile in Reinforcing the Foundation of Railway Bridge

Research purposes:Through making overall comments on the practical example,the explanations are given to the applied range and reinforcement principle of churning jet pile,including the issues for attention in design and construction.It is demonstrated that churning jet pile is a perfect way of reinforcing the foundation of bridge on existing railway line with feasible technique,money saving,practice,easy construction and good results.Research methods:Closely around the characteristics of the existing operational line,the comparisons are made for the influence on the safety of bridge foundation by conducting churning jet pile and for the reinforcement achievements from the angle of technology by adopting the methods of overall analyses,theoretical calculation and practical verification for the purposes of making research conclusion more believable and reinforcement achievement more reliable.Research conclusions:As a method of reinforcing foundation,churning jet pile has the features of wide application,easy construction,less influence on foundation,good reinforcement result and money saving,so it is necessary to do the further research on churning jet pile.