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Construction method of a high-fill corrugated steel pipe culvert

A technology of corrugated steel pipes and construction methods, applied in the construction field of culverts, can solve the problems of increasing construction difficulty and construction period, increasing construction engineering volume, increasing culvert cost, etc., achieving improved transportation capacity and transportation volume, short construction period, and occupied space small effect

Active Publication Date: 2015-10-28
NANJING LIANZHONG CONSTR ENG TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, the rigid culvert completely relies on its own strength to bear the pressure of the upper soil column. When the height of the upper fill increases, measures such as changing the cross-sectional area of ​​the culvert and improving the strength of the material are required to meet the structural strength requirements, resulting in an increase in the cost of the culvert, and an increase in the amount of construction work. Increased construction difficulty and construction period

Method used

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  • Construction method of a high-fill corrugated steel pipe culvert
  • Construction method of a high-fill corrugated steel pipe culvert
  • Construction method of a high-fill corrugated steel pipe culvert

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Embodiment Construction

[0017] Figure 1(a) is a schematic diagram of the settlement of a rigid culvert soil column, and Figure 1(b) is a schematic diagram of the settlement of a flexible culvert soil column, where τ represents the friction force generated by the outer soil column on the inner soil column, and the direction of τ in Figure 1(a) is Below, the τ direction in Figure 1(b) is upward, h is the filling height, 1 is the culvert, 2 is the foundation, below the foundation is the subgrade, and 3 is the filling plane.

[0018] First of all, Q345 or higher-grade hot-rolled steel plates are selected. After processing large waves, the surface of the steel plates should be galvanized and anti-corrosion treated. The corrugated steel pipe culverts are assembled at the construction site according to the construction of corrugated steel pipes. Next, carry out foundation treatment on culvert 1, so that the foundation bearing capacity on both sides of the projection area of ​​the culvert is 30-50KPa greater ...

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Abstract

The invention discloses a construction method for a high fill corrugated steel tube culvert. The construction method for the high fill corrugated steel tube culvert comprises the steps of the splicing, predeformation and backfill of the culvert. The construction method for the high fill corrugated steel tube culvert has the advantages of that the stress borne by the corrugated steel tube in the backfill process is made to be reduced through the construction method, the bearing capacity of the culvert is improved, and the identical corrugated steel tube culvert can be used in projects with higher earthing and cannot be cracked or damaged easily. The flexibility property of the corrugated steel tube culvert is fully utilized, the predeformation is carried out on the corrugated steel tube culvert, the culvert is made to be maintained in the original form after the backfill, the unfavorable conditions that the culvert is squeezed into a flat tube from a circular tube and is collapsed are avoided, and meanwhile the quality problem that the standard degree of compaction cannot be reached generally by two-side backfill is solved.

Description

technical field [0001] The invention relates to a construction method of a culvert, in particular to a construction method of a large-caliber high-fill corrugated steel pipe culvert. Background technique [0002] In recent years, infrastructure construction has been vigorously developed, especially expressways, which are developed in mountainous areas with complex terrain and ravines. However, there are a large number of high-fill and deep-excavation subgrades and tunnel projects in expressways. Therefore, high-fill subgrades have become high-grade highways in mountainous areas. One of the commonly used forms of culvert construction under high-fill embankments has sprung up. At the same time, due to the many excellent properties of corrugated steel plates, culverts assembled with corrugated steel plates are widely used in road engineering, so more and more corrugated steel pipe culverts are built in new roads. The corrugated steel pipes in the high fill area are covered wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01F5/00
Inventor 战福军
Owner NANJING LIANZHONG CONSTR ENG TECH
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