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Anti-freezing expansion system for catenary strut foundation and preparation process thereof

A technology of anti-frost heaving and catenary, applied in infrastructure engineering, protective devices, buildings, etc., can solve the problems of low reliability, non-recoverable, short service life, etc., and achieve the effect of reasonable structure, convenient installation, and stability

Pending Publication Date: 2019-04-26
LANZHOU JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods can alleviate the freezing and breaking of the pillar foundation to a certain extent, but their service life is short, and they are not recoverable, so the reliability is not high

Method used

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  • Anti-freezing expansion system for catenary strut foundation and preparation process thereof
  • Anti-freezing expansion system for catenary strut foundation and preparation process thereof
  • Anti-freezing expansion system for catenary strut foundation and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] An anti-frost heave system for catenary pillar foundation, such as Figure 1-3 As shown, it includes a pipe bottom sleeve 10, a frozen drawn steel pipe 20, a rolling structure, a pillar outer sleeve 30, a pillar 40, a flange 50 and a gravel layer 70;

[0060] Wherein, the tube bottom sleeve 10 has a cylindrical structure as a whole. In this embodiment, it is made of stainless steel and is divided into two symmetrical parts, which are fixedly connected by bolt assemblies. Shaped opening, the first spring joint 11 is installed on the inner bottom periphery of the tube bottom sleeve 10, in this embodiment, four first spring joints 11 are evenly installed on the bottom periphery;

[0061] Wherein, the frozen-drawn steel pipe 20 has a cylindrical structure as a whole. In this embodiment, the frozen-drawn steel pipe is composed of two semicircular structures connected by bolts, and the lower end is inserted into the pipe bottom sleeve through the opening at the top of the pip...

Embodiment 2

[0082] An anti-frost heave system for catenary pillar foundations, comprising a pipe bottom sleeve 10, a frozen drawn steel pipe 20, a rolling structure, a pillar outer sleeve 30, a pillar 40, a flange 50 and a gravel layer 70;

[0083] Wherein, the tube bottom sleeve 10 has a cylindrical structure as a whole. In this embodiment, it is made of stainless steel and is divided into two symmetrical parts, which are fixedly connected by welding. The bottom of the tube bottom sleeve 10 is closed, and a round Holes are opened, and first spring joints 11 are installed around the inner bottom of the tube bottom sleeve 10. In this embodiment, four first spring joints 11 are evenly installed around the bottom;

[0084] Wherein, the frozen-drawn steel pipe 20 has a cylindrical structure as a whole. In this embodiment, the frozen-drawn steel pipe is composed of two semicircular structures connected by bolts, and the lower end is inserted into the pipe bottom sleeve through the opening at th...

Embodiment 3

[0104] An anti-frost heave system for catenary pillar foundation, such as Figure 4 and Figure 5 As shown, it includes a pipe bottom sleeve 10, a frozen drawn steel pipe 20, a rolling structure, a pillar outer sleeve 30, a pillar 40, a flange 50 and a gravel layer 70;

[0105] Wherein, the tube bottom sleeve 10 has a cylindrical structure as a whole. In this embodiment, it is made of stainless steel and is divided into two symmetrical parts, which are fixedly connected by bolt assemblies. Shaped openings, the first spring joints 11 are installed on the inner bottom periphery of the tube bottom sleeve 10, in this embodiment, six first spring joints 11 are evenly installed on the bottom periphery;

[0106] Wherein, the frozen-drawn steel pipe 20 has a cylindrical structure as a whole. In this embodiment, the frozen-drawn steel pipe is composed of two semicircular structures connected by bolts, and the lower end is inserted into the pipe bottom sleeve through the opening at the...

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Abstract

The invention discloses an anti-freezing expansion system for a catenary strut foundation and a preparation process thereof, and belongs to the technical field of civil engineering. The anti-freezingexpansion system comprises tube bottom sleeves, a frost heaving steel tube, a rolling structure, a strut outer casing pipe, a strut, a flange and a gravel layer, wherein a spring is installed betweena spring joint at the bottom of each tube bottom sleeve and a spring joint at the lower end of the frost heaving steel tube; and the periphery of the springs and the bottom tube sleeves are filled with flexible filling bodies. The anti-freezing expansion system for the catenary strut foundation provided by the invention is reasonable in structure and convenient to install, has excellent anti-freezing and expansion capacity, also has extremely convenient self-recovery function, and can be used for a long time; and the anti-freezing expansion system for the catenary strut foundation is very suitable for alleviating the frost heave and thawing settlement phenomenon in a frozen soil region, for keeping the stability of the building foundation and the long-term operation safety of the system inthe frozen soil region, and very suitable for the anti-freezing expansion projects of the catenary strut foundation in the frozen soil region.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to a catenary pillar foundation anti-frost heaving system with excellent anti-freezing and pull-out capability and a preparation process thereof. Background technique [0002] At present, due to the repeated problems of frost heaving, thawing and thermal thawing and slumping in subgrades and structure foundations in permafrost areas in my country, irreversible engineering failures such as subgrade frost heaving and foundation pullout often occur. Major challenges in road construction and maintenance. Due to the seasonal frost heaving of frozen soil, the uplift of the soil produces a tangential frost heave force on the foundation of the structure. When the tangential frost heave force is greater than the self-weight and additional stress of the foundation of the structure, the foundation of the structure will have an upward displacement, which will affect the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/35E02D27/42E02D31/14C08L63/00C08L9/00C08K3/00C08K3/04C08K5/29
CPCE02D27/35E02D27/42E02D31/14C08L63/00C08L9/00C08K3/00C08K3/04C08K5/29
Inventor 王博林万冰清王旭马学宁蒋代军晋霞马文杰蔡红燕冉启仁
Owner LANZHOU JIAOTONG UNIV
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