Real time monitoring strengthening method preventing pile foundation from descending

Abstract

The invention relates to a real time monitoring strengthening method preventing a pile foundation from descending, which comprises steps of 1 obtaining standard value of pressure stress in a pile foundation design stage; 2 embedding a pressure gage which is connected with a computer through a wire at the top of each pile foundation in advance; 3 embedding grout injection pipes on four faces of the lateral portion of each pile foundation; 4 starting the grout injection pipes embedded on the four faces of the lateral portion of the pile foundation occurring pressure value deviation when deviation occurs between a measured actual value and a standard value for slip casting, and 5 completing grout injection, leveling a pile body to be stressed in balance, and strengthening the pile foundation occurring the pressure value deviation. The real time monitoring strengthening method preventing the pile foundation from descending can timely monitor pile foundation states, strengthen the pile foundation at the first time, is simple and easy to conduct, effectively reduces strengthening time of the pile foundation, improves strengthening efficiency of the pile foundation, lowers construction cost, improves construction quality, and is safe and reliable.

Description

technical field [0001] The invention belongs to the field of pile foundation reinforcement, in particular to a real-time monitoring reinforcement method for preventing pile foundation settlement. Background technique [0002] Modern high-rise buildings generally use pile foundation construction, usually cast-in-situ piles and prestressed pipe piles, but due to construction deviation, special soil quality and soil inhomogeneity in the site, the bearing capacity of pile foundations often appears uneven, and due to In the pile foundation design stage, in order to simplify the design and facilitate construction, the pile foundation parameters within a certain range of the site are often set to a uniform standard. Therefore, the bearing capacity of single piles in the site varies greatly, causing excessive uneven settlement and affecting the normal use of building structures. At present, there is no good construction method for adjusting the uneven stress of single piles. The ge...

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Problems solved by technology

[0002] Modern high-rise buildings generally use pile foundation construction, usually cast-in-situ piles and prestressed pipe piles, but due to construction deviation, special soil quality and soil inhomogeneity in the site, the bearing capacity of pile foundations often appears uneven, and due to In the pile foundation design stage, in order to simplify the design and facilitate construction, the pile foundation parameters within a certain range of the site are often set to a uniform standard. There is a large difference in the bearing capacity of single piles in the site, which causes excessive uneven settlement and affects the normal use of the building structure.

At present, there is no good construction method for adjusting the uneven stress of single piles. The general method of dealing with uneven settlement of pile foundations is to take remedial measures after large uneven settlement of the structure is found. The development of uneven settlement that will inevitably appear under the control of the control system complicates the remedial measures for uneven settlement. Even if the uneven settlement of buildings is eliminated, a lot of manpower, material and financial resources are often wasted.

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