Foundation bottom plate pile repairing construction method using self-locking anchor rods: Fid-Bau Portal

Foundation bottom plate pile repairing construction method using self-locking anchor rods

GAO ZUOPING / LIAO JIEHONG / TAN XINGZHOU

A foundation slab pile repairing construction method utilizing self-locking anchor rods comprises the following steps that firstly, a foundation concrete slab (3) on the periphery of a bearing platform (2) is chiseled, holes are drilled in a soil body below the foundation slab (3), and newly-added piles (5) are implanted into soil; and secondly, oblique anchor rods (6) are implanted in the foundation slab (3), and the oblique anchor rods (6) penetrate through the newly-added piles (5) to be anchored in the bearing platform (2). And thirdly, damaged steel bars in the foundation slab (3) are welded and repaired, and the foundation slab (3) is filled and recovered through concrete. According to the pile repairing scheme, an original bearing platform does not need to be expanded, and compared with a pile repairing scheme with an expanded bearing platform, the construction amount is small, construction is convenient, cost is saved, and the construction period is shortened.

一种利用自锁锚杆的基础底板补桩施工工法，包括以下步骤：步骤一，凿开承台(2)周边的基础混凝土底板(3)，在基础底板(3)下土体中打孔，将新增桩(5)植入土中。步骤二，在基础底板(3)中植入斜向锚杆(6)，斜锚杆(6)穿过新增桩(5)锚固在承台(2)中。步骤三，焊接修补基础底板(3)中的破损钢筋，用混凝土填补恢复基础底板(3)。本发明所述补桩方案不需扩大原承台，与扩大承台补桩方案相比施工量较小，施工方便，节约成本，且节约工期。

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