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Prefabricated Hollow Sandwich Steel Tube Concrete Arch Frame and Its Construction Method

A steel pipe concrete and assembled technology, which is applied in earthwork drilling, shaft equipment, wellbore lining, etc., can solve the problems of difficulty in ensuring full grouting of steel pipes, local stress concentration, and easy hollowing, etc., so as to reduce the workload of grouting , full grouting, to avoid the effect of hollowing

Active Publication Date: 2022-04-12
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

[0003] Although concrete-filled steel tube arches have significant advantages in the stability control of surrounding rocks in deep soft rock roadways, their construction is complex and require overall grouting operations after assembly underground. Full, prone to hollowing, causing local stress concentration at the hollowing position after the arch is stressed, and premature failure

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  • Prefabricated Hollow Sandwich Steel Tube Concrete Arch Frame and Its Construction Method
  • Prefabricated Hollow Sandwich Steel Tube Concrete Arch Frame and Its Construction Method
  • Prefabricated Hollow Sandwich Steel Tube Concrete Arch Frame and Its Construction Method

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] The purpose of the present invention is to provide an assembled hollow interlayer concrete-filled steel pipe arch that can simplify the underground construction process of the steel pipe concrete arch, reduce the grouting workload, and ensure that the steel pipe is fully grouted.

[0028] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail belo...

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Abstract

The invention discloses an assembled hollow interlayer concrete-filled steel pipe arch frame and a construction method thereof, and relates to the technical field of steel pipe concrete-filled arch frames. The arch frame includes a middle arc body and two straight arch legs, and the middle arc body includes multiple coaxial And the prefabricated arc sections arranged in sequence along the axial direction, the adjacent prefabricated arc sections are connected by the steel pipes outside the first anchorage area and the steel pipes in the first anchorage area, and the steel pipes in the first anchorage area and the first anchorage area A first annular grouting channel is formed between the steel pipes outside the anchorage area, and the prefabricated arc sections arranged at both ends of the middle arc body are connected to the straight arch legs through the steel pipes outside the second anchorage area and the steel pipes in the second anchorage area connected, and a second annular grouting channel is formed between the steel pipes outside the second anchorage area and the steel pipes in the second anchorage area. The arch frame can simplify the underground construction technology of the steel pipe concrete arch frame, reduce the grouting workload, and ensure that the steel pipe grouting is full.

Description

technical field [0001] The invention relates to the technical field of steel pipe concrete arch connection, in particular to an assembled hollow sandwich steel pipe concrete arch and a construction method thereof. Background technique [0002] With the reduction of shallow resources in my country, the depth of coal mine mining is gradually increasing, and the traditional masonry support, steel support and bolt-net spray support can no longer meet the support requirements of complex rock masses with high geostress in deep layers. The frame gives full play to the advantages of steel and concrete, and has the characteristics of high strength and high rigidity. It is widely used in deep rock mass roadway support and has achieved good support effects. [0003] Although concrete-filled steel tube arches have significant advantages in the stability control of surrounding rocks in deep soft rock roadways, their construction is complex and require overall grouting operations after ass...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/18E21D11/10
CPCE21D11/18E21D11/10
Inventor 王占文陈建伟马志军孙善永
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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