Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Pore forming method for cast-in-place pile of stilling pool and apron concrete bottom plate
According to the stilling pool and apron concrete bottom plate cast-in-place pile pore-forming method, the construction position is located on a stilling pool and apron concrete bottom plate, a construction area is defined by a cofferdam at the pore-forming position on the bottom plate, and the center of the cofferdam coincides with the circle center of a cast-in-place pile; a group of grouting holes penetrating into a sand gravel foundation are drilled in a construction area, curtain grouting is carried out in the grouting holes to block the influence of underground water of a sand gravel layer on bottom plate chiseling construction, a water mill drill is adopted for drilling, the bottom plate is chiseled away in a ramming fracture mode, and concrete stripping is carried out on steel bar parts exposed in the bottom plate through a wind pick. According to the structure, external water flow is blocked through the cofferdam to form an internal bottom plate pore-forming area and a cast-in-place pile construction area, a curtain grouting mode is adopted in a grouting hole to block underground water upwelling, it is guaranteed that the floor is chiseled away smoothly, the whole construction process is limited in the bottom plate area in the cofferdam, and the whole stilling pool and apron concrete bottom plate structure cannot be damaged; the stability of the bottom plate structure is ensured, and the potential safety hazard of a subsequent high pile supporting structure is eliminated.
一种消力池、护坦砼底板灌注桩造孔方法，施工位置位于消力池、护坦砼的底板上，在底板上的造孔位置围堰围出施工区域，所述围堰中心与灌注桩圆心重合，在施工区域内打一组深入砂砾石地基的灌浆孔并在灌浆孔内实施帷幕灌浆以隔断沙砾石层地下水对底板凿除施工的影响，采用水磨钻钻孔、夯击破裂方式对底板进行凿除，底板内暴露出的钢筋部位采用风搞剥离砼。本发明的结构通过围堰阻断外部水流形成内部底板造孔和灌注桩施工区域，在灌浆孔采用帷幕灌浆方式阻断地下水上涌，保证地板凿除顺利实施，整个施工过程限定在围堰内的底板区域，不会对整个消力池、护坦砼底板结构产生破坏，保证底板结构的稳定性，消除了后续高桩支档结构的不安全隐患。
Pore forming method for cast-in-place pile of stilling pool and apron concrete bottom plate
According to the stilling pool and apron concrete bottom plate cast-in-place pile pore-forming method, the construction position is located on a stilling pool and apron concrete bottom plate, a construction area is defined by a cofferdam at the pore-forming position on the bottom plate, and the center of the cofferdam coincides with the circle center of a cast-in-place pile; a group of grouting holes penetrating into a sand gravel foundation are drilled in a construction area, curtain grouting is carried out in the grouting holes to block the influence of underground water of a sand gravel layer on bottom plate chiseling construction, a water mill drill is adopted for drilling, the bottom plate is chiseled away in a ramming fracture mode, and concrete stripping is carried out on steel bar parts exposed in the bottom plate through a wind pick. According to the structure, external water flow is blocked through the cofferdam to form an internal bottom plate pore-forming area and a cast-in-place pile construction area, a curtain grouting mode is adopted in a grouting hole to block underground water upwelling, it is guaranteed that the floor is chiseled away smoothly, the whole construction process is limited in the bottom plate area in the cofferdam, and the whole stilling pool and apron concrete bottom plate structure cannot be damaged; the stability of the bottom plate structure is ensured, and the potential safety hazard of a subsequent high pile supporting structure is eliminated.
一种消力池、护坦砼底板灌注桩造孔方法，施工位置位于消力池、护坦砼的底板上，在底板上的造孔位置围堰围出施工区域，所述围堰中心与灌注桩圆心重合，在施工区域内打一组深入砂砾石地基的灌浆孔并在灌浆孔内实施帷幕灌浆以隔断沙砾石层地下水对底板凿除施工的影响，采用水磨钻钻孔、夯击破裂方式对底板进行凿除，底板内暴露出的钢筋部位采用风搞剥离砼。本发明的结构通过围堰阻断外部水流形成内部底板造孔和灌注桩施工区域，在灌浆孔采用帷幕灌浆方式阻断地下水上涌，保证地板凿除顺利实施，整个施工过程限定在围堰内的底板区域，不会对整个消力池、护坦砼底板结构产生破坏，保证底板结构的稳定性，消除了后续高桩支档结构的不安全隐患。
Pore forming method for cast-in-place pile of stilling pool and apron concrete bottom plate
消力池、护坦砼底板灌注桩造孔方法
CHEN WEIMIN (Autor:in) / ZHANG CHUNYONG (Autor:in)
09.06.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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