Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a construction method of a expanded-base cast-in-place pile, and particularly relates to a construction method of a expanded-base cast-in-place pile in a gravel-cobble soil layer. The construction method comprises the following steps of 1, drilling by adopting a spiral drill rod of a casing pipe type long spiral drilling machine, synchronously drilling or vibrating and sinking a casing pipe into a soil body, and lifting the spiral drill rod until enabling the spiral drill rod to be drilled to a set hole depth; 2, placing a reinforcement cage in a pile hole formed by the drilling; 3, firstly, adopting the spiral drill rod of the casing pipe type long spiral drilling machine again to go deep into the bottom of the pile hole where placing a reinforcement cage, then synchronously lifting the casing pipe by a set height, then lifting the spiral drill rod, and continuously pouring concrete into the pile hole in a pressing mode through the spiral drill rod in the whole lifting process till enalbing the pile hole to be full of the concrete; and 4, after completing the concrete pouring, pulling out the casing pipe, and construction is completed. According to the construction method, the technical problem of bottom-expanding cast-in-place pile construction in a gravel-cobble soil layer is solved and the construction method has the advantage of being simple in construction process.
本发明公开了一种扩底灌注桩的施工方法，特别是一种卵砾石土层中扩底灌注桩的施工方法，包括：步骤一，采用套管式长螺旋钻机的螺旋钻杆钻进，套管同步钻进或振沉入土体中，直至钻至设定孔深后提起螺旋钻杆；步骤二，将钢筋笼置入钻孔形成的桩孔；步骤三，首先，再次采用套管式长螺旋钻机的螺旋钻杆深入至下放钢筋笼的桩孔底部，然后套管同步提起设定高度后再提起螺旋钻杆，且螺旋钻杆在整个提升过程中向桩孔内连续压灌混凝土直至灌满桩孔；步骤四，待混凝土灌注完成后将套管拔出完成施工。其解决了“在卵砾石土层中扩底灌注桩施工”的技术问题，其具备施工工艺简单的优点。
The invention discloses a construction method of a expanded-base cast-in-place pile, and particularly relates to a construction method of a expanded-base cast-in-place pile in a gravel-cobble soil layer. The construction method comprises the following steps of 1, drilling by adopting a spiral drill rod of a casing pipe type long spiral drilling machine, synchronously drilling or vibrating and sinking a casing pipe into a soil body, and lifting the spiral drill rod until enabling the spiral drill rod to be drilled to a set hole depth; 2, placing a reinforcement cage in a pile hole formed by the drilling; 3, firstly, adopting the spiral drill rod of the casing pipe type long spiral drilling machine again to go deep into the bottom of the pile hole where placing a reinforcement cage, then synchronously lifting the casing pipe by a set height, then lifting the spiral drill rod, and continuously pouring concrete into the pile hole in a pressing mode through the spiral drill rod in the whole lifting process till enalbing the pile hole to be full of the concrete; and 4, after completing the concrete pouring, pulling out the casing pipe, and construction is completed. According to the construction method, the technical problem of bottom-expanding cast-in-place pile construction in a gravel-cobble soil layer is solved and the construction method has the advantage of being simple in construction process.
本发明公开了一种扩底灌注桩的施工方法，特别是一种卵砾石土层中扩底灌注桩的施工方法，包括：步骤一，采用套管式长螺旋钻机的螺旋钻杆钻进，套管同步钻进或振沉入土体中，直至钻至设定孔深后提起螺旋钻杆；步骤二，将钢筋笼置入钻孔形成的桩孔；步骤三，首先，再次采用套管式长螺旋钻机的螺旋钻杆深入至下放钢筋笼的桩孔底部，然后套管同步提起设定高度后再提起螺旋钻杆，且螺旋钻杆在整个提升过程中向桩孔内连续压灌混凝土直至灌满桩孔；步骤四，待混凝土灌注完成后将套管拔出完成施工。其解决了“在卵砾石土层中扩底灌注桩施工”的技术问题，其具备施工工艺简单的优点。
Construction method of expanded-base cast-in-place pile in gravel-cobble soil layer
一种卵砾石土层中扩底灌注桩的施工方法
26.10.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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