Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Reversed blocking method for part where enclosure piles are not constructed of station main body enclosure structure
The invention provides a reversed blocking method for a part where enclosure piles are not constructed of a station main body enclosure structure. The blocking method is characterized in that when cast-in-situ bored piles are adopted for the station main body enclosure structure, the area where enclosure piles cannot be constructed is blocked, and enclosure pile bodies are arranged on the two sides of the blocked part correspondingly; and the method comprises the specific construction steps that when a top beam of the enclosure structure is constructed, vertical main reinforcements in the toparea of a blocking wall is pre-buried in a top beam of a to-be-blocked part, in a foundation pit excavation process, a reversed blocking wall is constructed in the to-be-blocked area from top to bottom, the two ends of transverse main reinforcements of the blocking wall are welded to main reinforcements of the adjacent enclosure pile bodies on the two sides of the to-be-blocked part, and the bottom face of the blocking wall is arranged below a foundation pit base by 0.5-1 m. The method solves the problems that due to the fact that part of pile bodies of an existing enclosure pile structure cannot be normally constructed, the enclosure structure cannot be closed, and consequently peripheral foundation pit pavement settlement, foundation pit deformation, collapse, water gushing, sand gushingand the like are caused, and the method is suitable for clay layers and other stratums with good stability.
本发明提供了一种车站主体围护结构未施工围护桩部位的逆作封堵方法。所述封堵方法针对车站主体围护结构采取钻孔灌注桩时，无法施工围护桩的区域进行封堵，其封堵部位两侧分别设有围护桩体，具体施工步骤是：在施工围护结构冠梁时在待封堵部位的冠梁内预埋封堵墙顶部区域的竖向主筋，在基坑开挖过程同时从上至下在待封堵区域施工逆作封堵墙，其封堵墙的横向主筋两端分别与待封堵部位两侧相邻围护桩体主筋焊接，封堵墙的底面置于基坑基底以下0.5～1m。本发明中的方法解决了现有围护桩结构部分桩体无法正常施工而导致围护结构无法封闭，从而导致周边基坑路面沉降、基坑变形、塌方、涌水、涌沙等问题，适用于黏土层等稳定性较好的地层的问题。
Reversed blocking method for part where enclosure piles are not constructed of station main body enclosure structure
The invention provides a reversed blocking method for a part where enclosure piles are not constructed of a station main body enclosure structure. The blocking method is characterized in that when cast-in-situ bored piles are adopted for the station main body enclosure structure, the area where enclosure piles cannot be constructed is blocked, and enclosure pile bodies are arranged on the two sides of the blocked part correspondingly; and the method comprises the specific construction steps that when a top beam of the enclosure structure is constructed, vertical main reinforcements in the toparea of a blocking wall is pre-buried in a top beam of a to-be-blocked part, in a foundation pit excavation process, a reversed blocking wall is constructed in the to-be-blocked area from top to bottom, the two ends of transverse main reinforcements of the blocking wall are welded to main reinforcements of the adjacent enclosure pile bodies on the two sides of the to-be-blocked part, and the bottom face of the blocking wall is arranged below a foundation pit base by 0.5-1 m. The method solves the problems that due to the fact that part of pile bodies of an existing enclosure pile structure cannot be normally constructed, the enclosure structure cannot be closed, and consequently peripheral foundation pit pavement settlement, foundation pit deformation, collapse, water gushing, sand gushingand the like are caused, and the method is suitable for clay layers and other stratums with good stability.
本发明提供了一种车站主体围护结构未施工围护桩部位的逆作封堵方法。所述封堵方法针对车站主体围护结构采取钻孔灌注桩时，无法施工围护桩的区域进行封堵，其封堵部位两侧分别设有围护桩体，具体施工步骤是：在施工围护结构冠梁时在待封堵部位的冠梁内预埋封堵墙顶部区域的竖向主筋，在基坑开挖过程同时从上至下在待封堵区域施工逆作封堵墙，其封堵墙的横向主筋两端分别与待封堵部位两侧相邻围护桩体主筋焊接，封堵墙的底面置于基坑基底以下0.5～1m。本发明中的方法解决了现有围护桩结构部分桩体无法正常施工而导致围护结构无法封闭，从而导致周边基坑路面沉降、基坑变形、塌方、涌水、涌沙等问题，适用于黏土层等稳定性较好的地层的问题。
Reversed blocking method for part where enclosure piles are not constructed of station main body enclosure structure
车站主体围护结构未施工围护桩部位的逆作封堵方法
ZHANG LUOLIN (Autor:in) / ZHANG ZHIBING (Autor:in) / ZHANG CHUANG (Autor:in) / LI JIE (Autor:in) / FENG YAHUI (Autor:in)
25.12.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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