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A platform for research: civil engineering, architecture and urbanism
Metro station hole column middle side pile hole-forming construction method
The invention provides a side pile hole-forming construction method in a subway station hole column. The side pile hole-forming construction method comprises the following steps: step (1), surveying, setting out and positioning; (2) grouting reinforcement is conducted; (3) construction of a first-section retaining wall and a fore shaft; (4) drilling to form a hole; (5) waste slag is cleared and transported; (6) forming a hole; (7) a reinforcement cage is manufactured and placed; and (8) pile body concrete pouring is conducted, specifically, after formwork erecting in the lower pilot tunnel is completed, concrete pouring is conducted in time. According to the method, simple wall protection materials or advanced deep hole grouting reinforcement measures are adopted, mechanical dry hole-forming drilling equipment capable of being freely adjusted from 2.7 m to 4 m is selected, and under the condition that slurry wall protection construction conditions are not achieved, soil deformation and stress concentration conditions in the mechanical hole-forming process are simulated, compared and analyzed through multiple construction technologies; the excavation speed of mechanical dry hole forming and the construction technical problem of a stratum pre-reinforcement form are determined, and technical reserve is provided for similar engineering.
本发明提供一种地铁车站洞柱中边桩成孔施工方法，包括以下步骤：步骤(1).测量放线定位；步骤(2).注浆加固；步骤(3).首节护壁及锁口施工；步骤(4).钻进成孔；步骤(5).弃渣清运；步骤(6).成孔；步骤(7).钢筋笼制作及安放；步骤(8).桩身混凝土浇筑：下层导洞内支模完成后，及时进行混凝土浇筑。本发明采用简易护壁材料或超前深孔注浆加固措施，选择可以从2.7米高度到4米自由调整的机械干成孔钻孔设备，解决在不具备泥浆护壁施工条件下，采用多种施工工艺技术对机械成孔过程中的土体变形和应力集中情况进行模拟对比分析，确定机械干成孔的开挖速度及地层预加固形式的施工技术难题，为类似工程提供技术储备。
Metro station hole column middle side pile hole-forming construction method
The invention provides a side pile hole-forming construction method in a subway station hole column. The side pile hole-forming construction method comprises the following steps: step (1), surveying, setting out and positioning; (2) grouting reinforcement is conducted; (3) construction of a first-section retaining wall and a fore shaft; (4) drilling to form a hole; (5) waste slag is cleared and transported; (6) forming a hole; (7) a reinforcement cage is manufactured and placed; and (8) pile body concrete pouring is conducted, specifically, after formwork erecting in the lower pilot tunnel is completed, concrete pouring is conducted in time. According to the method, simple wall protection materials or advanced deep hole grouting reinforcement measures are adopted, mechanical dry hole-forming drilling equipment capable of being freely adjusted from 2.7 m to 4 m is selected, and under the condition that slurry wall protection construction conditions are not achieved, soil deformation and stress concentration conditions in the mechanical hole-forming process are simulated, compared and analyzed through multiple construction technologies; the excavation speed of mechanical dry hole forming and the construction technical problem of a stratum pre-reinforcement form are determined, and technical reserve is provided for similar engineering.
本发明提供一种地铁车站洞柱中边桩成孔施工方法，包括以下步骤：步骤(1).测量放线定位；步骤(2).注浆加固；步骤(3).首节护壁及锁口施工；步骤(4).钻进成孔；步骤(5).弃渣清运；步骤(6).成孔；步骤(7).钢筋笼制作及安放；步骤(8).桩身混凝土浇筑：下层导洞内支模完成后，及时进行混凝土浇筑。本发明采用简易护壁材料或超前深孔注浆加固措施，选择可以从2.7米高度到4米自由调整的机械干成孔钻孔设备，解决在不具备泥浆护壁施工条件下，采用多种施工工艺技术对机械成孔过程中的土体变形和应力集中情况进行模拟对比分析，确定机械干成孔的开挖速度及地层预加固形式的施工技术难题，为类似工程提供技术储备。
Metro station hole column middle side pile hole-forming construction method
地铁车站洞柱中边桩成孔施工方法
WANG CHUNKAI (author) / TIAN MINGLIANG (author) / HOU PENG (author) / LIU YAO (author) / GUO HONGBIN (author) / LI XINGHUA (author) / TAN HUI (author) / YUAN LANG (author) / ZHANG HONGJIE (author)
2024-02-13
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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