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Construction method of soft soil foundation hydraulic hammering type prestressed concrete pipe pile
The invention discloses a construction method of a soft soil foundation hydraulic hammering type prestressed concrete pipe pile. The method comprises the steps of determining a pile position point; selecting a hydraulic pile driver and determining a pile driving sequence; welding a pile tip at one end of the prestressed concrete pipe pile, wherein convex edge parts are arranged on a pile body of the prestressed concrete pipe pile along a bus, a grouting main pipe is pre-buried in each convex edge part, and a plurality of pairs of grouting branch pipes communicating with the grouting main pipeare vertically connected to the outer wall of the grouting main pipe; hoisting the prestressed concrete pipe pile with the pile tip to the pile position point to start hydraulic hammering for pile sinking; when the distance between the upper end of the prestressed concrete pipe pile and the ground is 0.7-1 m, stopping pile driving, and performing pile extension; sinking the prestressed concrete pipe pile with the pile tip to a designed elevation or a designed penetration degree; and grouting the grouting main pipe. The construction method is short in construction period and high in efficiency.
本发明公开了一种软土地基液压锤击式预应力混凝土管桩施工方法，其包括：确定桩位点；选择液压打桩机，确定打桩顺序；在预应力混凝土管桩的一端焊接桩尖，其中，预应力混凝土管桩的桩身本体上沿母线设置有凸棱部，所述凸棱部内预埋有注浆主管，所述注浆主管外壁垂直连接有多对与注浆主管连通的注浆支管；将装有桩尖的预应力混凝土管桩起吊至桩位点开始液压锤击沉桩；当预应力混凝土管桩上端距地面0.7～1m高时，停止打桩并进行接桩；将装有桩尖的预应力混凝土管桩沉至设计标高或者设计贯入度；对注浆主管灌浆。本发明施工周期短，效率较高。
Construction method of soft soil foundation hydraulic hammering type prestressed concrete pipe pile
The invention discloses a construction method of a soft soil foundation hydraulic hammering type prestressed concrete pipe pile. The method comprises the steps of determining a pile position point; selecting a hydraulic pile driver and determining a pile driving sequence; welding a pile tip at one end of the prestressed concrete pipe pile, wherein convex edge parts are arranged on a pile body of the prestressed concrete pipe pile along a bus, a grouting main pipe is pre-buried in each convex edge part, and a plurality of pairs of grouting branch pipes communicating with the grouting main pipeare vertically connected to the outer wall of the grouting main pipe; hoisting the prestressed concrete pipe pile with the pile tip to the pile position point to start hydraulic hammering for pile sinking; when the distance between the upper end of the prestressed concrete pipe pile and the ground is 0.7-1 m, stopping pile driving, and performing pile extension; sinking the prestressed concrete pipe pile with the pile tip to a designed elevation or a designed penetration degree; and grouting the grouting main pipe. The construction method is short in construction period and high in efficiency.
本发明公开了一种软土地基液压锤击式预应力混凝土管桩施工方法，其包括：确定桩位点；选择液压打桩机，确定打桩顺序；在预应力混凝土管桩的一端焊接桩尖，其中，预应力混凝土管桩的桩身本体上沿母线设置有凸棱部，所述凸棱部内预埋有注浆主管，所述注浆主管外壁垂直连接有多对与注浆主管连通的注浆支管；将装有桩尖的预应力混凝土管桩起吊至桩位点开始液压锤击沉桩；当预应力混凝土管桩上端距地面0.7～1m高时，停止打桩并进行接桩；将装有桩尖的预应力混凝土管桩沉至设计标高或者设计贯入度；对注浆主管灌浆。本发明施工周期短，效率较高。
Construction method of soft soil foundation hydraulic hammering type prestressed concrete pipe pile
软土地基液压锤击式预应力混凝土管桩施工方法
QIAN SHAOJIN (author) / ZHENG NAN (author) / LI MIN (author) / HU XIPENG (author) / ZHAO JINGYONG (author)
2020-11-03
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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