Water drainage reinforcing device for prepressing treatment of deep soft soil roadbed and application method of water drainage reinforcing device
A soft soil roadbed and reinforcement device technology, applied in soil protection, road, infrastructure engineering and other directions, can solve the problems of too many restrictive factors in economic benefits, inability to achieve good results, and inability to save investment, etc. The operability is strong, the economic benefits are considerable, and the treatment effect is remarkable.
Active Publication Date: 2017-02-22
CHINA RAILWAY SHANGHAI DESIGN INST GRP
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Problems solved by technology
Drainage preloading is optional, but the inherent drainage channels such as sand wells cannot achieve good results in deep soft soil areas. Although the cost of drainage preloading foundation treatment engineering is relatively low, the effect of foundation treatment is average. Limited application in tightly controlled projects
At present, in railway construction, sandbag grouting piles and concrete mixing piles are mostly used for foundation treatment, but the cost is generally high, and there are too many restrictive factors for economic benefits, which cannot achieve the purpose of saving investment
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[0025] Example: such as figure 1 As shown, the drainage reinforcement device used for preloading treatment of deep soft soil roadbed in this embodiment includes three parts: drain pipe 1, casing 2 and ejector rod 14, wherein the drain pipe 1 mainly serves to pre-press the deep soft soil roadbed. pressure treatment and drainage reinforcement, the casing 2 and the ejector rod 14 are mainly used to press the drainage pipe 1 into the deep soft soil subgrade.
[0026] Such as figure 1 and as figure 2 As shown, the drainage pipe 1 is a hollow pipe body, and a plurality of through holes which can be used as drainage holes 6 and exhaust holes 7 are opened on the casing side wall 16 . A conical body is fixedly arranged at the bottom of the drain pipe 1, and the conical body is formed by connecting a hollow circular platform 8 and a counterweight 10. The outer dimension of the hollow circular platform 8 gradually decreases from its top surface to the bottom surface. The part is in t...
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The invention relates to the technical field of soft soil treatment, in particular to a water drainage reinforcing device for prepressing treatment of a deep soft soil roadbed and an application method of the water drainage reinforcing device. The water drainage reinforcing device is characterized by at least comprising water drainage tubes, sleeves and ejector rods, wherein a cone is arranged at the bottom end of each water drainage tube; the outline dimension of each cone is gradually reduced from the top surface to the bottom surface of the cone until a conical tip is formed; the outline dimension of the top surface of each cone is greater than the diameter of the corresponding water drainage tube; each sleeve sleeves the outside of the corresponding water drainage tube, the bottom of each sleeve is abutted to a local part, which is greater than the corresponding water drainage tube, of the top surface of the corresponding cone; each ejector rod respectively penetrates through the corresponding sleeve and a tube hole of the corresponding water drainage tube; the bottom of each ejector rod is abutted to a local part, which is positioned in the water drainage tube, of the top surface of the corresponding cone; and through holes are respectively formed in surface of the body of each water drainage tube and the surface of the body of the corresponding sleeve. The water drainage reinforcing device has the advantages that advantages of foundation prepressing and consolidation treatment and advantages of cement-soil-stirred pile foundation treatment are combined.
Description
technical field [0001] The invention relates to the technical field of soft soil treatment, in particular to a drainage reinforcement device used for preloading treatment of deep soft soil subgrades and an application method thereof. Background technique [0002] In recent years, the national railway construction has developed rapidly, with the construction of high-speed railways in coastal provinces as the core, and the railway transportation network in the eastern region is changing with each passing day. Due to the influence of urban operation factors, the railway line still needs to cross the deep soft soil area after fully considering the geological conditions. As we all know, the deep and thick soft soil in the east coast of my country is extremely developed. Due to the zonal distribution characteristics of railway projects, the traditional regional vacuum preloading, cushion replacement and other soft soil foundation treatment methods are not suitable. Drainage prelo...
Claims
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IPC IPC(8): E02D3/10E01B2/00
CPCE01B2/00E02D3/10
Inventor 雷文郑晓慧李小燕
Owner CHINA RAILWAY SHANGHAI DESIGN INST GRP