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Construction method of rotary excavating pile penetrating through underground karst cave or underground river
A construction method of a rotary excavating pile penetrating through an underground karst cave or an underground river comprises the following steps that punching operation is carried out at a preset position till a first preset height position of the top of a karst cave or underground river space is achieved, so that a preliminary hole is formed; a pile casing is placed in the preliminary hole to serve as a protection wall; punching operation continues to be conducted in the preset position through the pile casing till the position of the second preset height of the bottom of the karst cave or underground river space is reached; the punching operation continues to be conducted till the third preset height position of the bottom of the karst cave or underground river space is reached; and the reinforcement cage is hoisted into the pile casing, and concrete is poured into the reinforcement cage to form the rotary excavating pile. According to the construction method of the rotary excavating pile penetrating through the underground karst cave or the underground river, the problem that a large amount of karst cave and underground river cannot be filled to form holes in a traditional scheme is solved, the engineering economy is good in the implementation process, the construction difficulty is low, hole forming treatment under the geological condition of the karst cave or the underground river is stable and effective, holes can be rapidly formed, and the construction period is shortened. And the design strength of the pile foundation under unfavorable geological conditions can be well met.
一种穿越地下溶洞或暗河的旋挖桩施工方法，包括如下步骤：在预设位置进行打孔作业，直至溶洞或暗河空间顶部第一预设高度位置处以形成初步孔；在初步孔内放置护筒以作为护壁；通过护筒继续在预设位置进行打孔作业，直至溶洞或暗河空间底部第二预设高度位置处；继续打孔作业，直至溶洞或暗河空间底部的第三预设高度位置处；吊放钢筋笼到护筒内，并向钢筋笼内灌注混凝土以形成旋挖桩。该穿越地下溶洞或暗河的旋挖桩施工方法，克服了传统方案处理大体量溶洞、暗河无法灌满成孔的难题，实施过程工程经济性好，施工难度较低，对在溶洞或暗河的地质条件下成孔的处理平稳有效，能快速成孔，而且能很好地满足了在不良地质条件下桩基的设计强度。
Construction method of rotary excavating pile penetrating through underground karst cave or underground river
A construction method of a rotary excavating pile penetrating through an underground karst cave or an underground river comprises the following steps that punching operation is carried out at a preset position till a first preset height position of the top of a karst cave or underground river space is achieved, so that a preliminary hole is formed; a pile casing is placed in the preliminary hole to serve as a protection wall; punching operation continues to be conducted in the preset position through the pile casing till the position of the second preset height of the bottom of the karst cave or underground river space is reached; the punching operation continues to be conducted till the third preset height position of the bottom of the karst cave or underground river space is reached; and the reinforcement cage is hoisted into the pile casing, and concrete is poured into the reinforcement cage to form the rotary excavating pile. According to the construction method of the rotary excavating pile penetrating through the underground karst cave or the underground river, the problem that a large amount of karst cave and underground river cannot be filled to form holes in a traditional scheme is solved, the engineering economy is good in the implementation process, the construction difficulty is low, hole forming treatment under the geological condition of the karst cave or the underground river is stable and effective, holes can be rapidly formed, and the construction period is shortened. And the design strength of the pile foundation under unfavorable geological conditions can be well met.
一种穿越地下溶洞或暗河的旋挖桩施工方法，包括如下步骤：在预设位置进行打孔作业，直至溶洞或暗河空间顶部第一预设高度位置处以形成初步孔；在初步孔内放置护筒以作为护壁；通过护筒继续在预设位置进行打孔作业，直至溶洞或暗河空间底部第二预设高度位置处；继续打孔作业，直至溶洞或暗河空间底部的第三预设高度位置处；吊放钢筋笼到护筒内，并向钢筋笼内灌注混凝土以形成旋挖桩。该穿越地下溶洞或暗河的旋挖桩施工方法，克服了传统方案处理大体量溶洞、暗河无法灌满成孔的难题，实施过程工程经济性好，施工难度较低，对在溶洞或暗河的地质条件下成孔的处理平稳有效，能快速成孔，而且能很好地满足了在不良地质条件下桩基的设计强度。
Construction method of rotary excavating pile penetrating through underground karst cave or underground river
穿越地下溶洞或暗河的旋挖桩施工方法
CAI CHONG (author) / DING HAIJIAN (author) / ZENG QINGYUAN (author) / HUANG TINGHAI (author)
2024-08-06
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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