Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method of replacement type internally-inserted profile steel fender post based on MJS construction method
The invention discloses a construction method of a replacement type internally-inserted profile steel fender post based on an MJS construction method. The method comprises the steps that an MJS main machine and auxiliary equipment of the MJS construction method are prepared firstly, an in-ground pressure sensor and a monitoring displayer are connected, and pressure zero clearing is conducted underthe condition that a drill bit is free of loads; the MJS main machine is in place, zero clearing is started, a drill rod is put into a guide hole to reach the designed depth, the drill rod and the drill bit are in butt joint till the drill bit reaches the preset depth, and the drill rod is in place; after the drill bit reaches the preset depth, all technological parameters are set, and then guniting is started to form an MJS jet grouting pile; and profile steel is hoisted to the pile center position of the MJS jet grouting pile, after the position is adjusted, the profile steel naturally sinks to the elevation position through the self weight, and the internally-inserted profile steel fender post is formed. According to the method, the defects of various traditional fender forms are overcome, the method adapts to fender engineering of deep foundation pits, the disturbance influence on the surrounding environment and a foundation is small, the pile body strength is high, the lap jointlength is large, and a very good soil blocking effect and a very good water isolation effect can be achieved.
本发明公开了一种基于MJS工法的置换式内插型钢围护桩施工方法，本方法首先准备MJS工法的MJS主机及辅助设备，连接地内压力传感器与监测显示器，钻头无荷载的情况下压力清零；MJS主机就位开始校零，在引孔内放入钻杆至设计深度，并进行钻杆和钻头对接，直至钻头到达预定深度，钻杆到位；钻头到达预定深度后，设定各工艺参数后开始喷浆形成MJS旋喷桩；型钢吊至MJS旋喷桩桩心位置，并调整位置后依靠自重使其自然下沉至标高位置，形成内插型钢围护桩。本方法克服传统各类围护形式的缺陷，适应深基坑的围护工程，对周边环境及地基扰动影响微小，桩身强度高以及搭接长度宽，能起到很好的挡土效果以及隔水效果。
Construction method of replacement type internally-inserted profile steel fender post based on MJS construction method
The invention discloses a construction method of a replacement type internally-inserted profile steel fender post based on an MJS construction method. The method comprises the steps that an MJS main machine and auxiliary equipment of the MJS construction method are prepared firstly, an in-ground pressure sensor and a monitoring displayer are connected, and pressure zero clearing is conducted underthe condition that a drill bit is free of loads; the MJS main machine is in place, zero clearing is started, a drill rod is put into a guide hole to reach the designed depth, the drill rod and the drill bit are in butt joint till the drill bit reaches the preset depth, and the drill rod is in place; after the drill bit reaches the preset depth, all technological parameters are set, and then guniting is started to form an MJS jet grouting pile; and profile steel is hoisted to the pile center position of the MJS jet grouting pile, after the position is adjusted, the profile steel naturally sinks to the elevation position through the self weight, and the internally-inserted profile steel fender post is formed. According to the method, the defects of various traditional fender forms are overcome, the method adapts to fender engineering of deep foundation pits, the disturbance influence on the surrounding environment and a foundation is small, the pile body strength is high, the lap jointlength is large, and a very good soil blocking effect and a very good water isolation effect can be achieved.
本发明公开了一种基于MJS工法的置换式内插型钢围护桩施工方法，本方法首先准备MJS工法的MJS主机及辅助设备，连接地内压力传感器与监测显示器，钻头无荷载的情况下压力清零；MJS主机就位开始校零，在引孔内放入钻杆至设计深度，并进行钻杆和钻头对接，直至钻头到达预定深度，钻杆到位；钻头到达预定深度后，设定各工艺参数后开始喷浆形成MJS旋喷桩；型钢吊至MJS旋喷桩桩心位置，并调整位置后依靠自重使其自然下沉至标高位置，形成内插型钢围护桩。本方法克服传统各类围护形式的缺陷，适应深基坑的围护工程，对周边环境及地基扰动影响微小，桩身强度高以及搭接长度宽，能起到很好的挡土效果以及隔水效果。
Construction method of replacement type internally-inserted profile steel fender post based on MJS construction method
基于MJS工法的置换式内插型钢围护桩施工方法
MAO FENGSEN (Autor:in) / ZHANG BAOLIANG (Autor:in)
18.12.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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