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Soft foundation replacement and filling construction method

A construction method and a technology for weak foundations, which can be used in filling, foundation structure engineering, excavation, etc., can solve problems such as low construction efficiency, and achieve the effects of simple construction, conducive to stress dispersion, and low cost

Active Publication Date: 2022-02-08
CHINA NAT CHEM ENG HEAVY MECHANIZED CORP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] In view of the technical problem of low construction efficiency in the construction process existing in the above-mentioned prior art, the purpose of the present invention is to provide a method for filling weak foundations

Method used

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Embodiment 1

[0032] In order to achieve the above purpose, this embodiment proposes a construction method for replacing weak ground, including the following steps:

[0033] (1) Ground treatment:

[0034] In this embodiment, the thickness of the replacement soil layer is determined at first: the geological survey report of this embodiment shows that the thickness of the collapsible yellow earth layer below the base of the foundation pit is 2.60-4.90 meters, and the specific thickness of the collapsible soil layer should be determined according to the field development. The excavation situation and the determination of the geological survey unit must ensure that all collapsible loess layers are excavated before filling, and the bearing capacity is not less than 270kpa, and the deformation modulus of the foundation is not less than 20Mp. After the foundation treatment, it is necessary to conduct a composite foundation bearing capacity test. The number of test points shall not be less than 3 a...

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Abstract

According to the soft foundation replacement construction method, according to layered backfilling, filler, the number of layers and the thickness of each layer are determined according to the foundation elevation, and the staggered distance of joints of the upper layer and the lower layer ranges from 0.5 m to 1 m; the staggered distances of the joints are sequentially decreased from bottom to top, and the middle points of the joints of all the layers are sequentially connected from top to bottom to form a broken line shape, so surface cracking caused by filling deformation is prevented, and the structural strength can be further improved; and the staggered distances of the joints are sequentially decreased from bottom to top, so stress dispersion is facilitated, and the filling strength is improved.

Description

technical field [0001] The invention relates to the technical field of foundation construction, in particular to a construction method for replacing and filling weak foundations. Background technique [0002] The treatment of weak ground has always been a major difficulty in building construction. Different treatment measures have great differences in cost, and the resulting quality effects are also fundamentally different. The foundation settlement problem in the field of industrial and civil construction is a fairly common quality problem. In recent years, it has caused dissatisfaction and complaints from many users. safety and stability. Therefore, how to provide a weak foundation replacement construction method to solve the problems of poor foundation water stability, strength and toughness after replacement of the foundation in the prior art is a technical problem urgently needed by those skilled in the art. Contents of the invention [0003] Aiming at the technical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/00E02D3/02E02D3/046E02D3/10E02D17/04E02D17/18E02D1/02
CPCE02D3/00E02D3/02E02D3/046E02D3/10E02D17/04E02D17/18E02D1/022
Inventor 武存中
Owner CHINA NAT CHEM ENG HEAVY MECHANIZED CORP
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