Vacuum preloading construction method for coastal soft foundation treatment
A technology for weak foundations and construction methods, which is applied in the fields of infrastructure engineering, soil protection, construction, etc., can solve the problems of long construction period and large pile of earth volume, etc., and achieve the effect of increasing strength and coagulation speed
Pending Publication Date: 2022-03-22
CHINA RAILWAY NO 2 ENG GRP CO LTD +1
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Problems solved by technology
[0004] Moreover, the current weak foundation construction technology requires a large amount of piled earthwork, and the construction period is long.
Method used
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Embodiment Construction
[0031] In order to make the purpose, technical solutions and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below, so as to facilitate the understanding of the skilled person.
[0032] The vacuum surcharge preloading construction method for coastal weak foundation treatment includes the following steps:
[0033] (1) Pouring mud seal wall
[0034] Measurement stakeout
[0035] Use RTK to stake out a midpoint of the sealing wall every 50m, and release the center point of the pile through the pull wire according to the released control point.
[0036] position
[0037] Draw the pile position map of the sealing wall according to the construction drawing, and use bamboo sticks or drainage board cores to determine the pile position every 50cm according to the pile position map. The positioning deviation should be controlled within the range of ±50mm, and the verticality of the pile pipe should...
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Abstract
The invention relates to a vacuum preloading construction method for coastal soft foundation treatment, and belongs to the technical field of soft foundation construction. According to the construction method, the slurry mixing piles serve as the sealing wall, the construction procedures of bottom layer medium-coarse sand backfilling, geotechnical cloth and RNG geogrid laying, drainage plate driving and inserting, second layer medium-coarse sand backfilling, vacuum pipeline embedding, medium-fine sand backfilling and geotechnical cloth and sealing film laying are conducted, vacuum preloading is conducted firstly after construction, and then the vacuum degree continues to be improved. The built sealing wall is good in sealing effect, high in strength and high in condensation speed, a good vacuumizing condition is provided for vacuum degree control of a vacuum preloading area, and the soft soil foundation can reach the designed bearing capacity more quickly through the construction method.
Description
technical field [0001] The invention belongs to the technical field of weak foundation construction, and in particular relates to a vacuum surcharge preloading construction method for treating weak coastal foundations. Background technique [0002] With the advent of the era of large infrastructure construction, engineering technology is changing with each passing day and developing rapidly. Different treatment methods have also appeared in the foundation treatment technology. The traditional soft foundation treatment construction technology has been unable to fully meet the design requirements, construction period requirements and benefit requirements under specific working conditions. [0003] When the country is vigorously developing and constructing the Guangdong-Hong Kong-Macao Greater Bay Area, because the geological conditions in this area are poor, mostly silt and mud layers, which belong to weak foundations, the first thing that needs to be solved is the soft founda...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E02D3/10E02D3/00E02D5/46
CPCE02D3/10E02D3/005E02D5/46
Inventor 陈军李志强吴凡宋杨皓鲁光明李享程允贵
Owner CHINA RAILWAY NO 2 ENG GRP CO LTD