论文部分内容阅读
粉喷桩是粉体喷射深层搅拌法的简称,它是深层加固处理技术的一种。其原理是通过专用的深层粉体喷射搅拌机,将粉状加固料如水泥、石灰粉,用压缩空气喷入地基深部,凭借搅拌机的回转钻头叶片使加固料与原位软土混合,就地搅拌形成具有整体性、水穗性及一定强度的桩体,桩体中的加固料与软土产生一系列物理化学反应,使软土硬结,从而使桩体与桩间土一起组成复合地基,起到加固地基的目的。工程概况桥址地质条件:同三线宁波段K3+782桥基条件极差,通道桥设计要求
Powder spray pile is short for powder injection deep mixing method, which is a kind of deep reinforcement processing technology. The principle is through a dedicated deep powder jet mixer, the powder reinforcement material such as cement, lime powder, spray compressed air into the deep foundation with the mixer rotary drill blade so that the reinforcement material and in situ soft soil mixing, in situ mixing Forming a pile with integrity, water fringing and certain strength. The reinforcement material in the pile body and the soft soil produce a series of physicochemical reactions that make the soft soil cemented, so that the pile body and the pile soil together form a composite foundation. To the purpose of strengthening the foundation. Project Overview Bridge site geological conditions: the same line Ningbo section K3 + 782 very poor condition of the bridge foundation, channel bridge design requirements