Method for repairing pile foundation of bridge filling pile
A technology of cast-in-situ piles and pile foundations, applied in sheet pile walls, foundation structure engineering, construction, etc., can solve problems such as substandard quality, extended construction period, and increased costs, and achieve high soil spalling and collapse, prevent soil spalling and collapse, and strengthen The effect of surface corrosion resistance
Inactive Publication Date: 2016-03-16
王良源
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Problems solved by technology
[0004] Therefore, the technical problem to be solved by the present invention is to overcome the technical problem that the quality of bridge cast-in-place piles in the prior art is not up to standard when the wall of the excavated hole collapses. In order to complete the construction, the workers have to re-dig the hole for pouring, resulting in increased costs and extended construction period. defects, thus providing a repair method for bridge cast-in-situ pile foundation
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0027] The present embodiment provides a bridge cast-in-place pile foundation repair method, comprising the following steps:
[0028] S1. Excavate a side well on the side of the cast-in-place pile foundation of the bridge near the substandard part. The smaller the inner diameter of the side well, the better. In this embodiment, the diameter is 80 cm, so that the cast-in-place pile foundation of the bridge can be as small as possible. The outer wall of the side is exposed in the side well, and the depth of the side well is controlled to be at least 50cm deeper than the lowest end of the substandard part; in this embodiment, since the height range of the substandard position is 5.8-6.1m, therefore The depth of the lateral shaft is 6.15m;
[0029] S2. Cut off the part that does not meet the standard, and check up and down to confirm that the pile foundation part mixed with sand has been completely cut off to form a cut-off space connected with the side well, and clean up the cut-...
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Abstract
The invention provides a method for repairing a pile foundation of a bridge filling pile. The method includes the steps that a side well is dug in the approximate position of a below-standard part on one side of the pile foundation, the side well is at least 50 cm deeper than the lowest end of the below-standard position, and it is guaranteed that the whole below-standard part is exposed; the below-standard part is chiseled away; after chiseled sand is completely cleaned away, repair concrete is used for being poured to the side well, and the chiseled space and part of the side well connected with the chiseled space are completely filled with the repair concrete; and after the repair concrete is maintained completely, the side well is filled with soil and compacted. By the adoption of the method for repairing the pile foundation, the chiseled space can be well filled with the repair concrete to make contact with the inner wall of the chiseled space in an attached manner, the repair concrete can be well combined with the original pile foundation after being maintained, and compared with the prior art, cost can be saved, and the construction period can be shortened.
Description
technical field [0001] The invention relates to the technical field of repair and maintenance of bridge pile foundations, in particular to a repair method for bridge cast-in-place pile foundations. Background technique [0002] Pile foundation is a common foundation form in bridge engineering, which can transmit the upper bridge load into the rock foundation and provide stable support for it. As a common form of bridge pile foundation, cast-in-place piles have the advantages of no vibration, no soil compaction, and low noise during construction, so they are widely used in the field of bridge construction. [0003] When making cast-in-situ piles, it is first necessary to use a rotary drilling rig to dig holes. After the holes are dug, put them into a reinforcement cage, and finally pour concrete. Since the wall of the hole dug out by the rotary drilling rig is soil, when concrete is poured into the hole, the part of the hole wall with softer soil is easily peeled off after b...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E02D5/64C04B26/32
CPCE02D5/64C04B26/32E02D2250/0023E02D2300/0045C04B14/06C04B24/42C04B14/062C04B24/166C04B26/122C04B14/42C04B14/12C04B24/121C04B28/02C04B14/02C04B24/281C04B24/045
Inventor 王良源
Owner 王良源