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Method for gradually replacing pile group shock insulation supports in self-jacking mode

A seismic isolation bearing and self-jacking technology, applied in protection devices, buildings, infrastructure projects, etc., can solve problems such as overall overturning damage, and achieve the goal of reducing risks, improving construction safety, and improving construction accuracy and construction quality. Effect

Inactive Publication Date: 2020-04-07
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The conventional replacement method is to replace the seismic isolation bearing by lifting the upper structure as a whole, but this method has the risk of overall overturning damage, and the risk is accompanied by the entire replacement process

Method used

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  • Method for gradually replacing pile group shock insulation supports in self-jacking mode
  • Method for gradually replacing pile group shock insulation supports in self-jacking mode
  • Method for gradually replacing pile group shock insulation supports in self-jacking mode

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Embodiment Construction

[0033] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] figure 1 A schematic structural view of an LNG storage tank according to an embodiment of the present invention is shown. Such as figure 1 As shown, the shock-absorbing support 2 that needs to be replaced is placed between the old pile head 4 and the tank body 1 .

[0035] figure 2 A schematic structural view of a single pile of the present invention is shown; image 3 A schematic structural view of the jack of the present invention is shown; Figure 4 A schematic diagram of an embodiment of construction of the present invention is shown; Figure 5 A flow chart of the method of the invention is shown. Such as Figure 2-Figure 3 As shown, the upper top plate 501 and the lower bottom plate 502 of the jack are used for connecting piles and transferring loads during normal use, and a pressure gauge 8 is connected to the jack, and the pressur...

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Abstract

The invention discloses a method for gradually replacing pile group shock insulation supports in a self-jacking mode. The method comprises the steps: sequentially selecting single piles, breaking thepile heads and taking down the shock insulation supports; connecting a new pile head with an original pile body, and installing a new shock insulation support; lifting the new pile head and the shockinsulation support in a self-jacking mode through a jack, monitoring the reading of a pressure gauge in the whole process, and adjusting the position of the shock insulation support; finally, reinforcing a jack area, and forming a complete single pile, so in this way, the shock insulation support of each single pile is completely replaced in sequence. The method has the advantages that the risk that overall overturning is likely to happen in the overall jacking process of the underground structure is avoided, and the construction safety is improved; the single pile load can be visually reflected through jack reading, the load value of the shock insulation support is effectively monitored and adjusted, and the construction precision and quality are improved.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a method for successively replacing seismic isolation bearings of pile groups through self-jacking. Background technique [0002] In order to meet the anti-seismic requirements of existing large structures and buildings, seismic isolation bearings are usually added between the superstructure and the foundation, and as the service time increases, the seismic isolation bearings will gradually age and need to be replaced. The conventional replacement method is to replace the seismic isolation bearing by lifting the upper structure as a whole, but this method has the risk of overall overturning damage, and the risk is accompanied by the entire replacement process. This is where this application needs to focus on improvement. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a self-jacking method for successively replacing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D35/00E02D31/08
CPCE02D31/08E02D35/005
Inventor 周彪谢雄耀李锟铻
Owner TONGJI UNIV