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Combined foundation structure suitable for lagoon face island-reef environment and construction method thereof

A technology that combines foundation and environment, applied in foundation structure engineering, sheet pile wall, caisson, etc., can solve the problems of airport bearing capacity, deformation and quality requirements that are difficult to meet the conditions of coral lagoon, lack of reinforcement of foundation effect, etc., to avoid structural problems. The effect of damage and damage, reducing construction risk and reducing consumption

Active Publication Date: 2016-05-04
CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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  • Application Information

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Problems solved by technology

The former can only be used for enclosure structures not bearing structures suitable for complex geological conditions near the sea; the latter composite foundation has the characteristics of bored piles, but does not have the effect of strengthening the foundation, so neither of them is suitable for heavy load foundations under the geological conditions of coral lagoons structure construction
[0004] In view of the fact that a single traditional infrastructure is difficult to meet the requirements of the airport's bearing capacity, deformation and quality in coral lagoon conditions

Method used

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  • Combined foundation structure suitable for lagoon face island-reef environment and construction method thereof
  • Combined foundation structure suitable for lagoon face island-reef environment and construction method thereof
  • Combined foundation structure suitable for lagoon face island-reef environment and construction method thereof

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Embodiment Construction

[0048] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0049] see figure 1 and figure 2 As shown, the embodiment of the present invention provides a combined foundation structure suitable for the environment of lagoon-like islands and reefs, which is suitable for the geological conditions of coral lagoons, including high-pressure jet-grouting stabilized piles 2, prefabricated caissons 3, side-limited high-pressure jet-grouting piles 4, Prefabricated bored pile 1, prefabricated cap 5. A plurality of side-constrained high-pressure jet grouting piles 4 form a curtain structure, and the prefabricated caisson 3 is located on the high-pressure jet-grouting stable pile 2, and within the curtain structure of the side-limited high-pressure jet grouting piles 4, the prefabricated caisson 3 includes a large A well hole 8 is reserved in the prefabricated caisson of the small inverted cylindrical platform. ...

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Abstract

The invention discloses a combined foundation structure suitable for a lagoon face island-reef environment and a construction method thereof, and relates to the field of geotechnical designs and island-reef development. The combined foundation structure suitable for the lagoon face island-reef environment and the construction method thereof are suitable for coral lagoon geological conditions. The combined foundation structure suitable for the lagoon face island-reef environment comprises high-pressure jet grouting stabilization piles, a prefabricated caisson, lateral restraining high-pressure jet grouting piles, prefabricated bored sinking pipe piles and a prefabricated bearing platform, wherein the prefabricated caisson is located on the high-pressure jet grouting stabilization piles and in a curtain structure formed by the lateral restraining high-pressure jet grouting piles and is in rigid connection with the prefabricated bearing platform into a whole for collaborative bearing through the prefabricated bored sinking pipe piles. The combined foundation structure suitable for the lagoon face island-reef environment and the construction method thereof not only overcome the disadvantageous engineering characteristics of a coral lagoon foundation structure such as high structural performance, low bearing capacity and large deformation, but also bring the bearing capacity of each layer of rock and earth mass of the coral lagoon foundation structure into full play, have the characteristics of large rigidity, high bearing capacity and fast, excellent and economical construction and the like, have the advantage of adapting to construction in island areas, have broad application prospects, and make it possible to build an airport and other overhead reclamation engineering on a coral lagoon foundation.

Description

technical field [0001] The invention relates to the field of geotechnical engineering design and island reefs, in particular to a combined foundation structure suitable for lagoon-like island and reef environments and its construction method and construction method. Background technique [0002] The land area of ​​islands and reefs in the South China Sea is extremely small, and the landform is dominated by coral lagoons, which are surrounded by ring-shaped coral reefs or separated by dam-shaped coral reefs. Calcareous sand of 0-17m is distributed on the surface layer of the object, under which are fully weathered reef limestone layer, strongly weathered reef limestone layer and moderately weathered reef limestone layer. Calcareous sand retains the characteristics of coral biological skeleton, and has the characteristics of many pores, non-uniform, irregular shape, easy to break, poor particle cementation, and high compression; although calcareous sand has a high particle int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/52E02D23/02E02D19/18E02D5/24
CPCE02D5/24E02D19/18E02D23/02E02D27/52
Inventor 褚文涛安群慧罗晓甜潘东发秦顺全吴方明杨帆张卫红冉军林
Owner CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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