A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Anti-pulling anchoring method for prestressed concrete pipe pile
The invention relates to the field of civil engineering, in particular to an anti-pulling anchoring method for a prestressed concrete pipe pile. More than four vertical uplift steel bars are annularly and fixedly connected to an annular flange plate at the bottom end of the prestressed concrete pipe pile, and the rigidity and the length of the uplift steel bars meet the requirement that the uplift steel bars are not bent and deformed when the pile is sunk into a soil body; meanwhile, one or combination of the following devices is additionally arranged on the basis of the anti-pulling steel bars: (1) more than one annular stirrup; (2) thorn-shaped reinforcing steel bars or expanding bodies for increasing the friction area; and (3) welding reinforcing ribs of the anti-pulling steel bars are used for improving the firmness and the contact area of the anti-pulling steel bars, and equivalently, anchoring rib bodies with certain lengths and very high strength and stability are additionally arranged at the bottom end of the prestressed concrete pipe pile. The three additionally-arranged devices are all arranged in the projection area of the annular cross section of the prestressed concrete pipe pile, so that steel plate bottom sealing of the prestressed concrete pipe pile and subsequent sinking and filler tamping construction are prevented from being affected.
本发明涉及土木工程领域，特别是涉及一种预应力混凝土管桩的抗拔锚固方法。在预应力混凝土管桩底端的环形法兰盘上，环型固定连接4根以上的竖向抗拔钢筋，抗拔钢筋的刚度及长度满足在沉桩入土体时不弯曲变形；同时在抗拔钢筋的基础上加设下述装置之一或者组合：①一道以上的环形箍筋；②增加摩擦面积的刺状钢筋或者扩径体；③抗拔钢筋的焊接加固筋，以提高抗拔钢筋的坚固度和接触面积，相当于给预应力混凝土管桩底端增加了具备一定长度的、强度和稳固度都很高的锚固筋体。上述加设的三种装置均设于预应力混凝土管桩的环形横截面的投影面积之内，以避免影响预应力混凝土管桩的钢板封底以及后续的沉入和填料夯实的施工。
Anti-pulling anchoring method for prestressed concrete pipe pile
The invention relates to the field of civil engineering, in particular to an anti-pulling anchoring method for a prestressed concrete pipe pile. More than four vertical uplift steel bars are annularly and fixedly connected to an annular flange plate at the bottom end of the prestressed concrete pipe pile, and the rigidity and the length of the uplift steel bars meet the requirement that the uplift steel bars are not bent and deformed when the pile is sunk into a soil body; meanwhile, one or combination of the following devices is additionally arranged on the basis of the anti-pulling steel bars: (1) more than one annular stirrup; (2) thorn-shaped reinforcing steel bars or expanding bodies for increasing the friction area; and (3) welding reinforcing ribs of the anti-pulling steel bars are used for improving the firmness and the contact area of the anti-pulling steel bars, and equivalently, anchoring rib bodies with certain lengths and very high strength and stability are additionally arranged at the bottom end of the prestressed concrete pipe pile. The three additionally-arranged devices are all arranged in the projection area of the annular cross section of the prestressed concrete pipe pile, so that steel plate bottom sealing of the prestressed concrete pipe pile and subsequent sinking and filler tamping construction are prevented from being affected.
本发明涉及土木工程领域，特别是涉及一种预应力混凝土管桩的抗拔锚固方法。在预应力混凝土管桩底端的环形法兰盘上，环型固定连接4根以上的竖向抗拔钢筋，抗拔钢筋的刚度及长度满足在沉桩入土体时不弯曲变形；同时在抗拔钢筋的基础上加设下述装置之一或者组合：①一道以上的环形箍筋；②增加摩擦面积的刺状钢筋或者扩径体；③抗拔钢筋的焊接加固筋，以提高抗拔钢筋的坚固度和接触面积，相当于给预应力混凝土管桩底端增加了具备一定长度的、强度和稳固度都很高的锚固筋体。上述加设的三种装置均设于预应力混凝土管桩的环形横截面的投影面积之内，以避免影响预应力混凝土管桩的钢板封底以及后续的沉入和填料夯实的施工。
Anti-pulling anchoring method for prestressed concrete pipe pile
一种预应力混凝土管桩的抗拔锚固方法
WANG JIZHONG (author) / ZHANG LIANXI (author) / XU TONG (author) / WANG GUANGLIANG (author) / YANG QI'AN (author) / LI XIANGMING (author)
2023-06-06
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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