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Corrugated steel pipe-steel sandwich layer composite pipe concrete combined component

A technology of corrugated steel pipes and combined components, applied in the fields of construction and bridges, can solve the problems of outer steel pipe buckling, poor corrosion resistance, weak anti-collision and impact resistance, etc., achieve compact structure, improve mechanical properties, and solve corrosion resistance poor effect

Pending Publication Date: 2019-02-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problems of poor corrosion resistance, weak anti-collision and impact resistance of the existing steel pipe concrete structure, and local buckling of the outer steel pipe easily outward, and further provides a corrugated steel pipe-steel interlayer composite pipe-concrete composite member

Method used

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  • Corrugated steel pipe-steel sandwich layer composite pipe concrete combined component
  • Corrugated steel pipe-steel sandwich layer composite pipe concrete combined component
  • Corrugated steel pipe-steel sandwich layer composite pipe concrete combined component

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specific Embodiment approach 1

[0021] Specific implementation mode one: as Figure 1~3 As shown, the corrugated steel pipe-steel sandwich composite pipe-concrete composite member of this embodiment includes a corrugated steel pipe 1, interlayer filler 2, steel pipe 3 and core concrete 4, the steel pipe 3 is located in the corrugated steel pipe 1 and the two are coaxially arranged, and the interlayer filling The material 2 is filled between the corrugated steel pipe 1 and the steel pipe 3, the corrugated steel pipe 1, the interlayer filler 2 and the steel pipe 3 form a corrugated steel pipe-steel sandwich composite pipe, and the core concrete 4 is filled in the steel pipe 3.

[0022] The production of corrugated steel pipe-steel sandwich composite pipe-concrete composite members mainly includes the following steps:

[0023] Step 1. Preparation of corrugated steel pipe 1: Taking galvanized spiral corrugated steel pipe as an example, the ordinary steel plate is hot-dip galvanized, mechanically rolled, spirally...

specific Embodiment approach 2

[0028] Embodiment 2: In this embodiment, the corrugated steel pipe 1 is a galvanized corrugated steel pipe, and the corrugated steel pipe 1 is a spiral corrugated steel pipe, an annular corrugated steel pipe or splicing of two half-pipes. With such a design, the corrugated steel pipe directly in contact with the external environment has better corrosion resistance under the protection of the galvanized layer, and the interlayer filling material has a dense structure and good anti-seepage and corrosion resistance, realizing double protection for the inner steel pipe. The problem of poor corrosion resistance of steel pipe concrete is well solved. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0029] Embodiment 3: In this embodiment, the corrugated steel pipe 1 is formed by sequentially connecting multiple steel pipes with bolts through flanges. In this design, in engineering application, the corrugated steel pipe-steel sandwich composite pipe is prefabricated in the factory, and the corrugated steel pipe 1 and steel pipe 3 inside the composite pipe are reserved for a certain length, and are welded or flanged according to the actual situation after transportation to the site. Other compositions and connections are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a corrugated steel pipe-steel sandwich layer composite pipe concrete combined component, and relates to a building structural component. The component solves the problems thatexisting steel pipe concrete structures are poor in corrosion resistance and weak in anti-collision and anti-impact capability, and external steel pipes easily bulge outward partially. The corrugatedsteel pipe-steel sandwich layer composite pipe concrete combined component comprises a corrugated steel pipe (1), a sandwich layer filler (2), a steel pipe (3) and core concrete (4); the steel pipe (3) is coaxially located in the corrugated steel pipe (1), the portion between the corrugated steel pipe (1) and the steel pipe (3) is filled with the sandwich layer filler (2), the corrugated steel pipe (1), the sandwich layer filler (2) and the steel pipe (3) constitute a corrugated steel pipe-steel sandwich layer composite pipe, and the steel pipe (3) is filled with the core concrete (4). The corrugated steel pipe-concrete-steel pipe combined component is used for building and bridge piers.

Description

technical field [0001] The invention belongs to a building structural member, in particular to a corrugated steel pipe-steel interlayer composite pipe-concrete composite member, which belongs to the technical fields of buildings and bridges. Background technique [0002] Due to the hoop effect of the steel pipe, the core concrete is in a three-way compression state, which greatly improves the strength, plasticity and toughness of the core concrete. At the same time, the core concrete also delays the inward local buckling of the steel pipe to a certain extent, so that the steel pipe concrete It takes full advantage of the advantages of steel and concrete, and has the characteristics of high bearing capacity, excellent seismic performance, and outstanding economic performance. It has been widely used in the field of civil engineering at home and abroad. However, as the proportion of concrete-filled steel tubes in marine structures, bridge structures, and wind turbine towers is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/02E02D27/12E02B17/00
CPCE01D19/02E02B17/00E02D27/12
Inventor 刘昌永方勇王玉银
Owner HARBIN INST OF TECH
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