Deviation rectifying method for pile foundation architecture inclination

Abstract

The invention relates to a correction method for a pile foundation building after tilted. The correction method comprises the following construction steps that: six observation points are arranged on a roof floor of the building; inclination values of various points are measured and the maximum inclination value is taken; the settling amount of the building in the inclined direction and the settling amount of the building opposite to the inclination direction are calculated; the hole pitch of core drawing holes and the number of the core drawing holes arranged are calculated; the settling amount of each core drawing hole provided during the correction process is calculated; a first batch of the core drawing holes are arranged and silt in the holes is drawn out, and then the building is settled opposite to the inclination direction; the sedimentation values of the six points are measured after 24 hours, and the daily average sedimentation speeds of three pairs of the observation points are calculated and are all less than or equal to 10 millimeters per day; a second batch of the core drawing holes, a third batch of the core drawing holes and a fourth batch of the core drawing holes are arranged and measured according to the same method as the first batch; when the slope gradient of a point with the maximum inclination value among the six observation points is less than or equal to 0.3 percent of the safety standard and is still less than the safety standard after 90 days, the correction operation is over. The method is easy to implement and has high precision and low cost.

Description

technical field [0001] The invention relates to building deflection correction technology, in particular to a deflection correction method for tilted pile foundation buildings. Background technique [0002] With the development of the economy, there are more and more commercial and civil buildings. At the same time, the buildings are developing from low-rise to multi-storey, and shallow foundations (such as strip foundations, raft foundations and box foundations) to deep foundations (such as pile base) development. However, in many parts of the country, especially in the middle and lower reaches of the Yangtze River and coastal cities, it often happens that the built buildings are tilted, which may cause cracks in the buildings and require reinforcement, and cause the beams and slabs of the buildings to break and make the buildings unusable. . [0003] There are two reasons for the tilt of the building, both internal and external. The internal cause is that the foundation...

AI Technical Summary

Problems solved by technology

The settlement method has the following problems: 1. It is only suitable for deflection correction of shallow-buried foundation buildings; 2. The workload cannot be accurately estimated, resulting in too long correction time

The jacking method has the following problems: 1. The cost is high; 2. It will cause additional settlement in the inclined direction, causing the deviation correction to be difficult to control, and the slope rate (the ratio of the building inclination value to the building height) after the deviation correction is still large; 3. The workload cannot be accurately predicted, and the correction time is long; 4. It is only suitable for correction of shallow foundation buildings

[0005] With the increasing number of high-rise buildings and the need for anti-seismic fortifications, there are more and more pile-based buildings, but at present there is no correction method for the inclined pile-based buildings

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