Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method suitable for bridge pile foundation under loess fracture sinking condition
The invention relates to a pre-grouting construction method suitable for a bridge pile foundation under a fracture sinking condition, and effectively solves the problems that the bridge pile foundation collapses when encountering water, cracks leak grout, hole forming is difficult, and quality stability is poor. According to the technical scheme, before the construction of the pile foundation, a geological drilling machine is used for drilling a soil body around a pile; a grouting pipe is mounted in the grouting hole; a grouting pump is used for grouting the grouting pipe in sequence; after gaps of cement paste in the filling soil body reach saturation, the cement paste can be gradually diffused under the action of pressure to continuously fill the gaps, the cement paste can extrude the surrounding soil body and be split into weak parts of the soil body to form a crossed net-shaped solidified body, the compactness and the compression modulus of the soil are enhanced, and thus conditions are created for construction of the pile foundation. According to the invention, the problems that the bridge pile foundation collapses when encountering water, slurry leaks from fissure sink holes,hole forming is difficult, and the quality stability is poor, the construction progress of the bridge pile foundation is accelerated under the geological condition, and the construction quality control is guaranteed.
本发明涉及一种适用于裂隙馅穴条件下桥梁桩基预注浆施工方法，有效的解决了桥梁桩基因遇水湿陷、裂隙漏浆、成孔困难、质量稳定性差的问题；解决的技术方案是桩基施工前，通过采用地质钻机对桩周土体进行钻孔作业，并向注浆孔内安装注浆管，采用注浆泵逐次对注浆管进行注浆，当水泥浆在充填土体中的空隙达到饱和后，会在压力作用下逐渐扩散不断充填空隙，能对周围土体产生挤压并劈入土体的薄弱部位，形成交叉网状凝固体，增强了土的密实度和压缩模量，从而为桩基施工创造条件；本发明能够有效解决桥梁桩基因遇水湿陷、裂隙馅穴漏浆、成孔困难、质量稳定性差等难题，加快了该地质条件下桥梁桩基施工进度，保障了施工质量控制。
Construction method suitable for bridge pile foundation under loess fracture sinking condition
The invention relates to a pre-grouting construction method suitable for a bridge pile foundation under a fracture sinking condition, and effectively solves the problems that the bridge pile foundation collapses when encountering water, cracks leak grout, hole forming is difficult, and quality stability is poor. According to the technical scheme, before the construction of the pile foundation, a geological drilling machine is used for drilling a soil body around a pile; a grouting pipe is mounted in the grouting hole; a grouting pump is used for grouting the grouting pipe in sequence; after gaps of cement paste in the filling soil body reach saturation, the cement paste can be gradually diffused under the action of pressure to continuously fill the gaps, the cement paste can extrude the surrounding soil body and be split into weak parts of the soil body to form a crossed net-shaped solidified body, the compactness and the compression modulus of the soil are enhanced, and thus conditions are created for construction of the pile foundation. According to the invention, the problems that the bridge pile foundation collapses when encountering water, slurry leaks from fissure sink holes,hole forming is difficult, and the quality stability is poor, the construction progress of the bridge pile foundation is accelerated under the geological condition, and the construction quality control is guaranteed.
本发明涉及一种适用于裂隙馅穴条件下桥梁桩基预注浆施工方法，有效的解决了桥梁桩基因遇水湿陷、裂隙漏浆、成孔困难、质量稳定性差的问题；解决的技术方案是桩基施工前，通过采用地质钻机对桩周土体进行钻孔作业，并向注浆孔内安装注浆管，采用注浆泵逐次对注浆管进行注浆，当水泥浆在充填土体中的空隙达到饱和后，会在压力作用下逐渐扩散不断充填空隙，能对周围土体产生挤压并劈入土体的薄弱部位，形成交叉网状凝固体，增强了土的密实度和压缩模量，从而为桩基施工创造条件；本发明能够有效解决桥梁桩基因遇水湿陷、裂隙馅穴漏浆、成孔困难、质量稳定性差等难题，加快了该地质条件下桥梁桩基施工进度，保障了施工质量控制。
Construction method suitable for bridge pile foundation under loess fracture sinking condition
一种适用于黄土裂隙陷穴条件下桥梁桩基的施工方法
LIU DONG (Autor:in) / WU CUNLIANG (Autor:in) / YAN JIE (Autor:in) / ZHAO HONGFENG (Autor:in) / WU JINGJIANG (Autor:in) / WANG WENXUE (Autor:in) / QIN YALI (Autor:in) / ZHONG LIANG (Autor:in) / CHEN XIAOYANG (Autor:in) / YANG RUIQING (Autor:in)
20.10.2020
Patent
Elektronische Ressource
Chinesisch
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