Method for foundation replacement construction of peat soil soft foundation box culvert
A technology of peat soil and box culverts, which is applied in infrastructure engineering, filling, excavation, etc., can solve problems such as low construction efficiency and difficult quality assurance, and speed up on-site construction progress, improve post-construction stability, and operability strong effect
Inactive Publication Date: 2020-07-31
CHINA MCC20 GRP CORP
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Problems solved by technology
[0003] In view of this, the present invention proposes a method for the replacement and construction of peat soil soft foundation box culvert foundation, aiming to solve the problems of difficult quality assurance and low construction efficiency in the existing peat soil soft foundation box culvert foundation construction process. question
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[0020] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0021] refer to figure 1 , the embodiment of the present invention is used for the peat soil soft ground box culvert foundation replacement method comprising...
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Abstract
The invention provides a method for foundation replacement construction of a peat soil soft foundation box culvert. The method comprises the following steps of, measuring and setting out, and confirming an excavation area; carrying out excavation for the first time from the first side of the box culvert foundation along the transverse direction of the roadbed and the longitudinal centerline of thebox culvert, and laying geotextile isolation layers along the excavation slope surface from the foundation base after the excavation reaches the specified elevation, and then carrying out stone replacement in layers; carrying out excavation for the second time on two sides adjacent to the first side of the box culvert foundation along the longitudinal direction of the roadbed and the transverse direction of the box culvert until the excavation reaches the design depth elevation and the preset width, and laying geotextile isolation layers on the two sides of the slope of the excavation area, and then carrying out stone replacement in layers; and carrying out backfilling in layers and tamping in layers of the excavation area, carrying out replacement until reaching the designed top elevation, and carrying out tamping and leveling until reaching the construction conditions of a box culvert structure. According to the method, the field construction progress of the peat soil soft foundation can be accelerated, the geotextile isolation layers are added, and the peat soil layer is isolated from stone replacement part, thus avoiding the mixed impact upon stability of the box culvert foundation.
Description
technical field [0001] The invention relates to the technical field of box culvert construction, in particular to a method for replacing and filling a peat soil soft foundation box culvert foundation. Background technique [0002] At present, box culvert structure construction is relatively common in all grades of highways, and box culvert foundations also adopt different methods based on different geological conditions, such as using sand cushions, riprap to squeeze silt, PHC pipe piles, etc. to improve the geological conditions and have reached stability. The construction method used for the peat soil soft foundation box culvert foundation is relatively rare, and the construction method in the prior art is used to construct the peat soil soft foundation box culvert foundation, the production efficiency is low, and the quality is difficult to control. Contents of the invention [0003] In view of this, the present invention proposes a method for the replacement and constr...
Claims
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Patent Timeline
Login to view more IPC IPC(8): E02D17/00E02D17/18E02D27/32E01F5/00E03F5/04
CPCE01F5/005E02D17/00E02D17/18E02D27/32E03F5/04Y02A30/60
Inventor 丁明鹤张奇王洋张扬朱凌云
Owner CHINA MCC20 GRP CORP
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