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Construction system and construction method of double-layer arch support for highway soft rock tunnel

A tunnel and soft rock technology, which is applied to the double-layer arch support construction system and construction field of highway soft rock tunnels, and can solve the problems of heavy weight of steel arches and difficulty in installing steel arches.

Active Publication Date: 2021-05-07
黑龙江省鼎捷路桥工程有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Due to the small space in the tunnel, large-scale hoisting machinery and equipment cannot enter, and the weight of the steel arch frame is relatively large, making it difficult for workers to install the steel arch frame in the tunnel

Method used

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  • Construction system and construction method of double-layer arch support for highway soft rock tunnel
  • Construction system and construction method of double-layer arch support for highway soft rock tunnel
  • Construction system and construction method of double-layer arch support for highway soft rock tunnel

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Embodiment 1

[0046] Such as Figure 1-6 As shown, this embodiment provides a double-layer arch support construction system for highway soft rock tunnels, including an outer steel arch 100 and an inner steel arch 110, and the outer steel arch 100 includes a multi-section outer arch 101 , the inner steel arch 110 includes a plurality of inner arches 111 that are respectively arranged on the same arc as the corresponding outer arch 101, and a connecting mechanism 120 is provided between the outer arch 101 and the two ends of the corresponding inner arch 111; the connecting mechanism 120 includes fixing mechanisms 200 respectively used to connect the same end of the outer arch 101 and the corresponding inner arch 111. The fixing mechanism 200 includes a fixing plate 201, and bolt holes are arranged on the fixing plate 201 and located around it, and there are connecting holes in the bolt holes. Bolt 202, the plate surface of fixed plate 201 is all provided with two connecting plates 221 arrange...

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Abstract

The invention relates to the technical field of tunnel support, and discloses a construction system and a construction method for double-layer arch support of highway soft rock tunnels. Including the outer steel arch and the inner steel arch, the outer steel arch includes a multi-section outer arch, the inner steel arch includes a plurality of inner arches that are respectively arranged in the same radian as the corresponding outer arch, the outer arch and A connection mechanism is provided between the two ends of the corresponding inner arch; the connection mechanism includes a fixing mechanism for connecting the same end of the outer arch and the corresponding inner arch respectively, and the fixing mechanism includes a fixing plate, which is located on the surrounding There are bolt holes, and connecting bolts are arranged in the bolt holes. Two connecting plates are arranged in parallel on the plate surface of the fixing plate, and the ends of the outer arch frame and the corresponding inner arch frame are fixedly connected to the connecting plate. Between; connecting rods are connected between the fixing mechanisms. Through the above structure, the double-layer arch support construction system can be quickly installed and spliced ​​in the tunnel.

Description

technical field [0001] The invention relates to the technical field of tunnel support, in particular to a construction system and a construction method for a double-layer arch support for highway soft rock tunnels. Background technique [0002] In recent years, with the enhancement of the country's social and economic strength and the needs of regional economic development, winding roads in mountainous areas have been gradually abandoned, and a large number of tunnel projects have been used to cross mountains. Because the surrounding rock of soft rock tunnels is mainly characterized by the development of cracks and joints, Occurrence disorder, obvious folds, broken and weak rock mass, low strength, and extremely poor stability. Some soft rocks are accompanied by high ground stress and have rheological characteristics. It takes a long time for the tunnel to redistribute stress after excavation, and the stress The distribution is uneven, so that after the tunnel is excavated, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/18E21D11/24E21D20/00
CPCE21D11/18E21D11/24E21D20/00
Inventor 樊建昆霍新合梁运波金明冯艳星包晓梅徐芳媛郑志敏冯平均王燕
Owner 黑龙江省鼎捷路桥工程有限公司
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