论文部分内容阅读
一、前言桥梁建筑中,应用管桩作为基础近来潮趋普遍。管桩的结构简单,重量较轻,施工方便,能应用于入土数十公尺的基础,逐渐取沉箱沉井的用途而代之,尤其在中小桥跨中更为适用。目前国内应用的管桩多为钢筋混凝土制成,其本身强度较高,而地基土壤承载力一般总较低,不能与管桩本身的强度相适应,因而限制了钢筋混凝土管桩发挥充分的作用。为解决此矛盾,乃有扩大桩尖的办法。
First, the foreword Bridge construction, the application of pipe piles as the basis for the recent tide tends to prevail. The structure of the pipe pile is simple, the weight is light, and the construction is convenient. The utility model can be applied to the foundation of tens of meters of earthing and gradually takes the use of caisson caisson instead of it. At present, most domestic pipe pile is made of reinforced concrete, its own strength is higher, while the bearing capacity of foundation soil is generally lower, can not adapt to the strength of pipe pile itself, thus limiting the full role of reinforced concrete pipe pile . To solve this contradiction, there is a way to expand the pile.