Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-pressure jet grouting pile construction method for road foundation
The invention discloses a high-pressure jet grouting pile construction method for a road foundation. The high-pressure jet grouting pile construction method comprises the following steps that (1), pile forming process test is carried out; (2), a stable drilling machine is placed, and a drilling rod is kept perpendicular to the ground; (3), after the drilling machine drills a drill hole to the designed depth, a grouting pipe is inserted; (4), during jet grouting, an air compressor is started in a no-load manner, high-pressure grout is started in a no-load manner, air and water are supplied into a hole, the grouting pipe is rotated, a grouting pump is started, clear water is supplied into the hole, and a water suction pipe of the grouting pump is moved to a grout storage barrel to start grouting; (5), after jet grouting reaches the designed depth, air supply and water supply are stopped, after cement paste returns out of an orifice, grouting is stopped, clear water is pumped to eject out the cement paste in a slurry pump and a grouting pipeline, and the pump is stopped; (6), after the jet grouting operation, supplementary grouting is carried out on a recess in the top of a consolidated body; and (7), the quality of the consolidated body is checked. According to the method, construction is easy and convenient, the shape of the consolidated body is controllable, the strength of the consolidated body is controllable, durability is good, materials are wide, and the price is relatively low.
本发明公开了一种道路地基的高压旋喷桩施工方法，包括以下步骤：（1）成桩工艺试验；（2）安放平稳钻机，钻杆与地面保持垂直；（3）钻机钻孔钻进至设计深度后，插入注浆管；（4）喷射注浆时，空载起动空压机，空载起动高压浆，向孔内送风和水，旋转注浆管，开动注浆泵，向孔内送清水，将注浆泵的吸水管移至储浆桶开始注浆；（5）喷射注浆达到设计深度后，停止送风和水，待水泥浆在孔口返出后，停止注浆，抽吸清水将泥浆泵和注浆管路中的水泥浆顶出，停泵；（6）喷射注浆作业后，对固结体顶部的凹穴进行补灌；（7）检验固结体的质量。本发明施工简便，固结体形状可控制，对固结体的强度可控，耐久性较好，材料广阔，且价格相对低廉。
High-pressure jet grouting pile construction method for road foundation
The invention discloses a high-pressure jet grouting pile construction method for a road foundation. The high-pressure jet grouting pile construction method comprises the following steps that (1), pile forming process test is carried out; (2), a stable drilling machine is placed, and a drilling rod is kept perpendicular to the ground; (3), after the drilling machine drills a drill hole to the designed depth, a grouting pipe is inserted; (4), during jet grouting, an air compressor is started in a no-load manner, high-pressure grout is started in a no-load manner, air and water are supplied into a hole, the grouting pipe is rotated, a grouting pump is started, clear water is supplied into the hole, and a water suction pipe of the grouting pump is moved to a grout storage barrel to start grouting; (5), after jet grouting reaches the designed depth, air supply and water supply are stopped, after cement paste returns out of an orifice, grouting is stopped, clear water is pumped to eject out the cement paste in a slurry pump and a grouting pipeline, and the pump is stopped; (6), after the jet grouting operation, supplementary grouting is carried out on a recess in the top of a consolidated body; and (7), the quality of the consolidated body is checked. According to the method, construction is easy and convenient, the shape of the consolidated body is controllable, the strength of the consolidated body is controllable, durability is good, materials are wide, and the price is relatively low.
本发明公开了一种道路地基的高压旋喷桩施工方法，包括以下步骤：（1）成桩工艺试验；（2）安放平稳钻机，钻杆与地面保持垂直；（3）钻机钻孔钻进至设计深度后，插入注浆管；（4）喷射注浆时，空载起动空压机，空载起动高压浆，向孔内送风和水，旋转注浆管，开动注浆泵，向孔内送清水，将注浆泵的吸水管移至储浆桶开始注浆；（5）喷射注浆达到设计深度后，停止送风和水，待水泥浆在孔口返出后，停止注浆，抽吸清水将泥浆泵和注浆管路中的水泥浆顶出，停泵；（6）喷射注浆作业后，对固结体顶部的凹穴进行补灌；（7）检验固结体的质量。本发明施工简便，固结体形状可控制，对固结体的强度可控，耐久性较好，材料广阔，且价格相对低廉。
High-pressure jet grouting pile construction method for road foundation
一种道路地基的高压旋喷桩施工方法
ZHOU JIZHI (Autor:in) / WANG JINGSONG (Autor:in) / LI PIJUN (Autor:in) / ZHANG GUANGJUN (Autor:in)
08.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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