摘要
研究目的:桩板结构是一种新型的地基加固结构,结构形式较为复杂,目前推广和应用路基桩板结构需要解决的首要难题是如何建立合理的计算模型,并采用合理的解析计算方法求解结构内力和变形。本文基于"等效代替框架法"原理给出各种形式的路基桩板结构的平面简化法则,建立平面杆件计算模型,综合"刚度法"和"地基系数法"给出了通用的求解桩板结构内力及变形的解析计算方法,并以托梁式桩板结构为例阐述解析计算的主要的计算公式及具体求解思路。研究结论:目前用简化的平面杆件力学计算模型来代替桩板结构实构是可行并且最有效的方法。本文给出的综合利用"刚度法"以及"地基系数法"求解平面杆件力学模型的结构内力的解析计算方法适用于各种形式的桩板结构,所求解的结构内力结果是合理可靠的,可以作为设计的控制解。
Research purposes： The pile - board structure is a new type of foundation reinforcement structure with complex structure style. Now in the wide application of the pile - board structure for subgrade, how to establish the reasonable calculation model and how to get the internal force and deformation with the reasonable calculation method are the most urgent problems to be solved. Based on the principle of the equivalent replacement frame method, in this paper, the plane simplified rules for all kinds of the pile - board structure of subgrade are offered, the plane member bar calculation model is established, the analytical calculation for getting the internal force and deformation of the structure is presented on the basis of stiffness method and foundation coefficient method and taking beam - type pile - board structure as an example, the explanation is given to the main calculation formula and concrete solving ideas. Research conclusions： Now, substitution of simplified plane member bar mechanic calculation model for the actual structure of the pile - board structure is an available and the most efficient way. The analytical calculation method for getting the structure internal force of the plane member bar mechanic model presented in this paper based on the stiffness method and foundation coefficient method is available for all kinds of pile - board structure, and the obtained result of the internal force of the structure is reasonable and reliable and can be as the control solution.
出处
《铁道工程学报》
EI
北大核心
2011年第8期42-46,共5页
Journal of Railway Engineering Society
关键词
桩板结构
平面简化法则
解析计算
pile - board structure
plane simplified rules
analytical calculation
