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Large-span heavy-load force-induced backfill open-hole lining structure

A heavy-load, large-span technology, used in wellbore lining, tunnel lining, shaft equipment, etc., can solve the problems of waste of masonry work and the inability to guarantee the durability of lining in open holes.

Active Publication Date: 2016-09-21
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the lining thickness is increased blindly, it will not only cause a lot of masonry waste, but also cause large temperature cracks due to the inability to effectively eliminate the hydration heat of large-volume concrete, resulting in that the durability of the open-hole lining cannot be guaranteed

Method used

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  • Large-span heavy-load force-induced backfill open-hole lining structure
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  • Large-span heavy-load force-induced backfill open-hole lining structure

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] refer to figure 1 , figure 2 and image 3 , the large-span heavy-load force-induced backfill open-hole lining structure of the present invention, the open-hole lining 10 with an annular cross-section is formed by the arch part 11, the side wall 12 and the inverted arch 13 molded by concrete or reinforced concrete, and the open-hole lining 10 The outer contour arc surface of the arch portion 11 and the side wall 12 is provided with a force-induced protective arch 20 . The open tunnel lining 10 is the main load-bearing structure, and the force-induced protective arch 20 mainly redistributes the external force on the open tunnel lining 10, and also bears part of the backfill load. The layered composite support structure can effectively support the open-cut large-span tunnel space, and only by adjusting the structural shape and material character...

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Abstract

The invention relates to a large-span heavy load stress induction type backfilling open cut tunnel lining structure, which has the advantages that an open cut tunnel has greater span and can bear greater load, the design thickness of the open cut tunnel lining can be effectively controlled, and in addition, the lining construction quality of the open cut tunnel is easy to control. An inverted arch (13), a side wall (12) and an arch part (11) molded by concrete or reinforced concrete form an annular cross section open cut tunnel lining (10), and the outer contour cambered surface of the side wall (12) and the arch part (11) of the open cut tunnel lining (10) is provided with a stress induction protecting arch (20).

Description

technical field [0001] The invention relates to a tunnel structure, in particular to a large-span heavy-load stress-induced backfilled open-hole lining structure. Background technique [0002] Considering the requirements of saving project cost, reserving planned land, and reducing operational risks, etc., in the design of railways and highways, tunnels with open holes are adopted in the design of high slopes, dangerous rockfall sections, or sections that cannot be avoided due to planning needs, especially in The construction of railways in mountainous areas is subject to the requirements of station settings, and large-span and high-height backfill open-hole lining structures often appear. The span of open tunnel lining has developed from ordinary single- and double-line tunnels to three- and four-line tunnels, and even more tunnels. With the continuous breakthrough of tunnel spans, the thickness and load of backfill soil for tunnel open tunnel linings are constantly increas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/10
Inventor 杨雄高杨琚国全熊祥雪李晓园赵万强胖涛曹彧王建磊马青张永平匡亮袁伟杨学中刘金松何洋薛强
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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