Pile cap and method for repairing and reinforcing concrete tubular-pile pile head

Abstract

The invention provides a pile cap and method for repairing and reinforcing a concrete tubular-pile pile head. The pile cap for repairing and reinforcing the concrete tubular-pile pile head comprises an annular end plate, an outer sleeve, an inner sleeve and a kidney-shaped connecting hole; and the outer side face of the annular end plate is sleeved with the outer sleeve, the inner side face of theannular end plate is sleeved with the inner sleeve, and the kidney-shaped connecting hole is formed in the annular end plate. The method for repairing and reinforcing the concrete tubular-pile pile head utilizes the pile cap and comprises the steps that on the basis that an original structure of the pile head is not changed and a cavity of a tubular pile is not filled, the pile head is directly sleeved with the pile cap so that core filling of the top of the pile head or filling of a bottom cavity of the tubular pile for bottom sealing in the later project can be normally conducted. Accordingto the pile cap and method for repairing and reinforcing the concrete tubular-pile pile head, operation is easy, the working efficiency is high, and the economic loss caused by the damaged pile headcan be reduced.

Description

technical field [0001] The invention relates to the field of construction, and relates to a pile cap and a method for repairing and strengthening concrete pipe pile heads. Background technique [0002] Pretensioned prestressed high-strength concrete pipe piles have been widely used in construction projects because of their outstanding advantages such as short construction period, reliable quality, resource saving and less environmental pollution; however, they are affected by unfavorable factors such as geology and construction in the actual construction process , Occasionally, the pile head will be damaged; in general, if the pile head is damaged, the construction cannot be continued, and it needs to be redesigned to drive 1 or 2 identical pipe piles next to it, and the upper cap at the top of the pile head will also It needs to be increased, which increases the construction cost and consumes a lot of manpower and material resources. If the rotten pile head can be repaired...

AI Technical Summary

Problems solved by technology

[0003] About pile head domestic also has invented similar technology, as the pile cap that pile head repairing is recorded in patent document 200920256194, this pile cap is only provided with a sleeve on the outer circle of end plate, if the higher geological pile head of strength is in Easily deformed and damaged when hitting

[0004] There are related records in patent documents 200910263365 and 201310187506 about the repairing and strengthening method of the pile head, but the methods all have the following problems: repairing changes the cavity structure of the pipe pile, so that the original larger diameter cavity of the pipe pile becomes only one Due to the large vent hole, the core filling at the top of the pile head or the back-sealing concrete filling the cavity at the bottom of the pipe pile cannot be carried out smoothly in the later stage, which has certain limitations.

[0005] Moreover, the sulfur mastic method described in patent document 201310187506 requires on-site heating and melting, and the melting and pouring process will produce harmful gases such as sulfur dioxide, which is not good for the environment and harmful to the body

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