Reinforcing structure suitable for dual-arch tunnel mid-partition and construction method

A technology of strengthening structure and double-connected arches, applied in tunnels, tunnel linings, earthwork drilling, etc., can solve the problems of large excavation section, affecting construction efficiency, uneven control requirements, etc., to improve the ability to disperse stress, ensure Construction and operation safety, the effect of improving anti-distortion ability
CN110388218AActive Publication Date: 2019-10-29SHANDONG UNIV +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG UNIV
Publication Date
2019-10-29

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Abstract

The invention discloses a reinforcing structure suitable for a dual-arch tunnel mid-partition and a construction method. The reinforcing structure comprises at least four steel web plates, the multiple steel web plates are sequentially welded to form the star-flower-shaped section manner, the embedding capacity of the reinforcing structure and the mid-partition can be greatly improved, the contactarea of the reinforcing structure and a rock-soil body is greatly increased, and the structure whole distortion-resisting capacity is improved. Grouting steel floral tubes are arranged on the two sides of each steel web plate, compaction between the reinforcing structure and the rock-soil body can be improved through pressure grouting, side friction resistance is greatly increased, and the unevendeposition of the mid-partition can be controlled. The two sides of each steel web plate are provided with steel ribs and a vibrating wire type earth pressure box, the steel ribs achieve the effect of improving the side friction resistance, improving the local stability and the antitorque capacity of the steel web plates and the protecting the earth pressure box, the vibrating wire type earth pressure box above the steel ribs can achieve real-time monitoring of stress of the reinforcing structure, in combination with conventional monitoring and measuring of the mid-partition, and the stable state of the mid-partition can be more comprehensively mastered.
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Description

technical field

[0001] The invention relates to the technical field of multi-arch tunnel construction, in particular to a reinforcement structure and a construction method suitable for a partition wall in a double-arch tunnel. Background technique

[0002] Due to its space-saving, smooth line, beautiful appearance, and ability to overcome terrain obstacles, the double-arch tunnel has become one of the tunnel forms often used in mountainous road tunnels and urban short tunnels in recent years. Compared with ordinary single-arch tunnels, the biggest difference between double-arch tunnels is that the two arches are connected by a partition wall. Therefore, the partition wall becomes an important force-bearing component of a multi-arch tunnel, and its stability is very important. It is directly related to To the construction safety, construction progress and operation safety of the double-arch tunnel. Therefore, it is necessary to strengthen the partition wall to improve the st...

Claims

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