Cast-in-place pile structure facilitating pile head breaking and construction method: Fid-Bau Portal

Cast-in-place pile structure facilitating pile head breaking and construction method

BEHETIAR KUDZETI / YANG YONGCHENG

The cast-in-place pile structure comprises the pile head and a pile body, a reinforcement cage in the pile body comprises main reinforcements and stirrups, the main reinforcements in the pile body extend upwards to the top of the pile head, the stirrups are not contained in the pile head, a plurality of PVC pipes are further arranged in the pile head, and the PVC pipes are arranged in the pile head. Each PVC pipe is vertically arranged in the pile head and is not lower than the pile head, the bottom of each PVC pipe is flush with the bottom of the pile head, sealing structures capable of being detached or opened are arranged at the two ends of each PVC pipe, one PVC pipe is located in the center of the pile head, the other PVC pipes are at least divided into one layer and are evenly distributed around the center PVC pipe in the circumferential direction, and the PVC pipes are arranged in the middle of the pile head. A protective layer of which the bottom surface is flush with the bottom of the pile head is sleeved outside the main reinforcement in the pile head; the invention further discloses a construction method for conveniently breaking the pile head. During breaking, breaking is sequentially carried out from outside to inside, that is, the pile head is stripped layer by layer during breaking, and auxiliary construction of a crane and an excavator is not needed.

本发明公开了一种便于破除桩头的灌注桩结构，包括桩头和桩体，所述桩体内的钢筋笼包括主筋和箍筋，且桩体内的主筋向上延伸至桩头顶部，桩头内不含箍筋，在桩头内还设置有若干根PVC管，每根PVC管竖直设置在桩头内且PVC管高度不低于桩头的高度，所述PVC管的底部与桩头的底部齐平，所述PVC管的两端设置有能被拆卸或者能被打开的密封结构，其中一根PVC管位于桩头的中心，其余PVC管至少分成一层围绕中心PVC管呈圆周均布，桩头内的所述主筋外套设有底面与桩头的底部齐平的保护层；同时还公开了一种便于破除桩头的施工方法。在破除时，由外到内依次进行，即在破除时将桩头一层一层的剥离，使其不需要吊车、挖掘机的辅助施工。

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