A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Precast concrete composite pipe pile for pulling resistance and construction method
The invention provides an anti-pulling prefabricated concrete composite pipe pile and a construction method, and the prefabricated concrete composite pipe pile comprises at least two sections of prefabricated concrete pipes which are constructed to be sequentially pressed into preset pile positions in the vertical direction; the reinforcement cage is arranged in the prefabricated concrete pipe; one end of the retard-bonded prestressed steel strand is anchored at the pile bottom, and the other end of the retard-bonded prestressed steel strand exceeds the upper end of the prefabricated concrete pipe; the concrete core is arranged in the precast concrete pipes, and the concrete core and the at least two precast concrete pipes are connected together in a pouring mode; wherein the curing time of a retarding adhesive of the retarded-bonding prestressed steel strand is later than the setting time of the concrete core, and after the strength responding to the concrete core reaches a preset threshold value, the retarded-bonding prestressed steel strand is tensioned till the retarding adhesive is cured.
本公开提供了一种用于抗拔的预制混凝土复合管桩及施工方法，预制混凝土复合管桩包括：至少两节预制混凝土管，被构造成在竖直方向上依次压入预设桩位内；钢筋笼，设置在预制混凝土管内；缓粘结预应力钢绞线，一端在桩底处锚固，另一端超出预制混凝土管上端；混凝土芯，设置在预制混凝土管内，混凝土芯与至少两节预制混凝土管浇筑连接在一起；其中，缓粘结预应力钢绞线的缓凝粘合剂的固化时间晚于混凝土芯的凝结时间，响应于混凝土芯的强度达到预设阈值后对缓粘结预应力钢绞线进行张拉至缓凝粘合剂固化。
Precast concrete composite pipe pile for pulling resistance and construction method
The invention provides an anti-pulling prefabricated concrete composite pipe pile and a construction method, and the prefabricated concrete composite pipe pile comprises at least two sections of prefabricated concrete pipes which are constructed to be sequentially pressed into preset pile positions in the vertical direction; the reinforcement cage is arranged in the prefabricated concrete pipe; one end of the retard-bonded prestressed steel strand is anchored at the pile bottom, and the other end of the retard-bonded prestressed steel strand exceeds the upper end of the prefabricated concrete pipe; the concrete core is arranged in the precast concrete pipes, and the concrete core and the at least two precast concrete pipes are connected together in a pouring mode; wherein the curing time of a retarding adhesive of the retarded-bonding prestressed steel strand is later than the setting time of the concrete core, and after the strength responding to the concrete core reaches a preset threshold value, the retarded-bonding prestressed steel strand is tensioned till the retarding adhesive is cured.
本公开提供了一种用于抗拔的预制混凝土复合管桩及施工方法，预制混凝土复合管桩包括：至少两节预制混凝土管，被构造成在竖直方向上依次压入预设桩位内；钢筋笼，设置在预制混凝土管内；缓粘结预应力钢绞线，一端在桩底处锚固，另一端超出预制混凝土管上端；混凝土芯，设置在预制混凝土管内，混凝土芯与至少两节预制混凝土管浇筑连接在一起；其中，缓粘结预应力钢绞线的缓凝粘合剂的固化时间晚于混凝土芯的凝结时间，响应于混凝土芯的强度达到预设阈值后对缓粘结预应力钢绞线进行张拉至缓凝粘合剂固化。
Precast concrete composite pipe pile for pulling resistance and construction method
用于抗拔的预制混凝土复合管桩及施工方法
LOU DONGHAO (author) / CUI GUANGYA (author) / GONG YONGQING (author)
2023-12-08
Patent
Electronic Resource
Chinese
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