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Construction method for eliminating collapsibility of cement stirring insertion pile in collapsible loess area
The invention discloses a construction method for eliminating collapsibility of a cement stirring insertion pile in a collapsible loess area. The method comprises the following steps of stirring for three times during construction of the cement stirring insertion pile, stirring for the first time, in the depths of a bearing stratum and a non-collapsible soil layer, spraying cement slurry by a stirring pile machine to stir and rise; in the depth of the collapsible loess layer, the stirring pile machine ascending by spraying water and stopping ascending to the ground; secondary stirring being conducted, specifically, secondary stirring sinking being conducted on the stirred soil layer, stirring sinking being conducted while water spraying is conducted on the collapsible loess layer, and sinking being conducted while cement slurry spraying is conducted on the bearing layer and the non-collapsible soil layer; third stirring for the third time, stirring and rising the stirred soil layer for the third time, rising while spraying cement slurry in a supporting layer and a non-collapsible soil layer, stirring and rising while spraying water in a collapsible loess layer, and finishing the construction of the stirring pile when the water content of the stirring soil around the pile needs to be saturated.
本发明公开了一种湿陷性黄土地区水泥搅拌插入桩消除湿陷性的施工方法，水泥搅拌插入桩施工时进行三次搅拌，一次搅拌：在持力层及非湿陷性土层深度内，搅拌桩机械采取喷水泥浆搅拌上升；在湿陷性黄土层深度内，搅拌桩机械采取喷水上升，上升到地面停止；二次搅拌：对已搅拌的土层进行二次搅拌下沉，在湿陷性黄土层边喷水边搅拌下沉，在持力层及非湿陷性土层，边喷水泥浆边下沉；三次搅拌：对已搅拌的土层进行三次搅拌上升，在持力层及非湿陷性土层，边喷水泥浆边上升，在湿陷性黄土层边喷水边搅拌上升，桩周搅拌土需要达到饱和含水率，搅拌桩施工完毕。
Construction method for eliminating collapsibility of cement stirring insertion pile in collapsible loess area
The invention discloses a construction method for eliminating collapsibility of a cement stirring insertion pile in a collapsible loess area. The method comprises the following steps of stirring for three times during construction of the cement stirring insertion pile, stirring for the first time, in the depths of a bearing stratum and a non-collapsible soil layer, spraying cement slurry by a stirring pile machine to stir and rise; in the depth of the collapsible loess layer, the stirring pile machine ascending by spraying water and stopping ascending to the ground; secondary stirring being conducted, specifically, secondary stirring sinking being conducted on the stirred soil layer, stirring sinking being conducted while water spraying is conducted on the collapsible loess layer, and sinking being conducted while cement slurry spraying is conducted on the bearing layer and the non-collapsible soil layer; third stirring for the third time, stirring and rising the stirred soil layer for the third time, rising while spraying cement slurry in a supporting layer and a non-collapsible soil layer, stirring and rising while spraying water in a collapsible loess layer, and finishing the construction of the stirring pile when the water content of the stirring soil around the pile needs to be saturated.
本发明公开了一种湿陷性黄土地区水泥搅拌插入桩消除湿陷性的施工方法，水泥搅拌插入桩施工时进行三次搅拌，一次搅拌：在持力层及非湿陷性土层深度内，搅拌桩机械采取喷水泥浆搅拌上升；在湿陷性黄土层深度内，搅拌桩机械采取喷水上升，上升到地面停止；二次搅拌：对已搅拌的土层进行二次搅拌下沉，在湿陷性黄土层边喷水边搅拌下沉，在持力层及非湿陷性土层，边喷水泥浆边下沉；三次搅拌：对已搅拌的土层进行三次搅拌上升，在持力层及非湿陷性土层，边喷水泥浆边上升，在湿陷性黄土层边喷水边搅拌上升，桩周搅拌土需要达到饱和含水率，搅拌桩施工完毕。
Construction method for eliminating collapsibility of cement stirring insertion pile in collapsible loess area
一种湿陷性黄土地区水泥搅拌插入桩消除湿陷性的施工方法
ZHU YANPENG (author) / RUI JIA (author) / CHENG DONG (author) / WANG WENLONG (author) / DONG HUAITANG (author) / LI FANGCHUAN (author) / FAN JINXIN (author) / HUANG TAO (author)
2022-01-28
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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