Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for bored pile foundation, combined steel casing and bored pile foundation
The invention relates to the technical field of bridge construction, in particular to a construction method for a drilled pile foundation, a combined steel casing and the drilled pile foundation. The combined steel casing of a special structure sinks in advance before drilling, and the hole wall is stabilized based on the structure of the combined steel casing, so that underground water of a water-rich layer permeates into a reserved space between the outer-layer casing and the inner-layer casing through the outer casing; after underground water permeating between the outer-layer pile casing and the inner-layer pile casing is pumped out in time to be below the preset drilling position line, drilling is conducted, the situation that underground water permeates from the periphery and the bottom to affect drilling mud in the inner-layer pile casing is avoided, the requirement for normal drilling work is met, the drilling hole collapse risk is small, and the drilling efficiency is improved. The influence of underground water on the drilling wall in the water-rich area on drilling is avoided, the construction difficulty is low, the safety is high, the environmental influence is small, the construction efficiency is improved, and the formed pile foundation is good in quality control and high in bearing capacity.
本发明涉及桥梁施工技术领域，具体涉及一种用于钻孔桩基础的施工方法、组合钢护筒及钻孔桩基础。本发明在钻孔前采用特殊结构的组合钢护筒提前下沉，基于组合钢护筒本身结构维稳孔壁，使富水层的地下水通过外护筒渗透到外层护筒和内层护筒之间预留的空间，待及时抽取出外层护筒和内层护筒之间渗透的地下水至钻孔预设位置线以下后再钻孔，避免地下水从四周和底部渗入从而对内层护筒中的钻孔泥浆产生影响，满足了正常钻孔工作的需要，且钻孔塌孔风险小，解决了富水区钻孔壁地下水对钻孔的影响，施工难度低、安全性高、环境影响小，提高了施工效率，所形成的桩基础质量控制好、承载能力强。
Construction method for bored pile foundation, combined steel casing and bored pile foundation
The invention relates to the technical field of bridge construction, in particular to a construction method for a drilled pile foundation, a combined steel casing and the drilled pile foundation. The combined steel casing of a special structure sinks in advance before drilling, and the hole wall is stabilized based on the structure of the combined steel casing, so that underground water of a water-rich layer permeates into a reserved space between the outer-layer casing and the inner-layer casing through the outer casing; after underground water permeating between the outer-layer pile casing and the inner-layer pile casing is pumped out in time to be below the preset drilling position line, drilling is conducted, the situation that underground water permeates from the periphery and the bottom to affect drilling mud in the inner-layer pile casing is avoided, the requirement for normal drilling work is met, the drilling hole collapse risk is small, and the drilling efficiency is improved. The influence of underground water on the drilling wall in the water-rich area on drilling is avoided, the construction difficulty is low, the safety is high, the environmental influence is small, the construction efficiency is improved, and the formed pile foundation is good in quality control and high in bearing capacity.
本发明涉及桥梁施工技术领域，具体涉及一种用于钻孔桩基础的施工方法、组合钢护筒及钻孔桩基础。本发明在钻孔前采用特殊结构的组合钢护筒提前下沉，基于组合钢护筒本身结构维稳孔壁，使富水层的地下水通过外护筒渗透到外层护筒和内层护筒之间预留的空间，待及时抽取出外层护筒和内层护筒之间渗透的地下水至钻孔预设位置线以下后再钻孔，避免地下水从四周和底部渗入从而对内层护筒中的钻孔泥浆产生影响，满足了正常钻孔工作的需要，且钻孔塌孔风险小，解决了富水区钻孔壁地下水对钻孔的影响，施工难度低、安全性高、环境影响小，提高了施工效率，所形成的桩基础质量控制好、承载能力强。
Construction method for bored pile foundation, combined steel casing and bored pile foundation
用于钻孔桩基础的施工方法、组合钢护筒及钻孔桩基础
ZHONG YAWEI (Autor:in) / LU JIANLI (Autor:in) / LUO WEI (Autor:in) / CHEN KEJIAN (Autor:in) / CHEN JIANFENG (Autor:in) / DAI SHENGYONG (Autor:in) / YAN YONG (Autor:in) / AI ZONGLIANG (Autor:in) / CAI CHAO (Autor:in) / TANG JUN (Autor:in)
25.04.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
Engineering Index Backfile | 1952
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