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Simple steel support arch centring for tunnel concrete lining

A concrete and steel support technology, applied in tunnel lining, shaft lining, tunnel, etc., can solve the problems of tunnel lining construction progress and cost input impact, slow speed, large labor force, etc., to reduce project cost, easy to operate, reduce build The effect of dismantling the cost

Inactive Publication Date: 2017-08-18
SINOHYDRO BUREAU 5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Transportation to the new lining site for re-erecting requires a lot of labor and the speed is slow, which has a great impact on the tunnel lining construction progress and cost investment

Method used

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  • Simple steel support arch centring for tunnel concrete lining
  • Simple steel support arch centring for tunnel concrete lining
  • Simple steel support arch centring for tunnel concrete lining

Examples

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] According to the size of the concrete pouring section of the cave body, the present invention adopts section steel to make the steel supporting annular arch 1. On site, according to the weight of the section steel and the difficulty of installation in the cave, the annular arch 1 is cut and segmented, and welded at the end of the segmented arch. The steel plate 5 and the steel plate 5 are drilled, and the segmented annular arch 1 is connected into a whole with bolts 6. The installation distance of the annular arch 1 is determined according to the size of the steel formwork used for pouring. After the installation of the steel-supported ring arch 1 is completed, steel-supported longitudinal purlins 2 are made of profiled steel at the inverted arch. According to the spacing of the ring arch 1, the steel-supported longitudinal purl...

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Abstract

The invention discloses simple steel support arch centring for a tunnel concrete lining. The simple steel support arch centring comprises a template, an annular arch centring and longitudinal circuit purlin; the template is arranged at the outer portion of the annular arch centring; the annular arch centring is composed of a plurality of steel rings, wherein the steel rings with a same size are arranged at equal distance; and the longitudinal circuit purlin is arranged in the axial direction of the annular arch centring, intersects with the annular arch centring vertically and is used for fixing the steel rings of the annular arch centring. According to the simple steel support arch centring for the tunnel concrete lining, the simple annular arch centring and the longitudinal circuit purlin are utilized to replace an all-round scaffold support form when tunnel concrete is casted discontinuously, and the simple steel support arch centring is very simple and practical in the process of tunnel lining construction.

Description

technical field [0001] The invention relates to the field of tunnel concrete lining support devices, in particular to a simple steel support arch frame for tunnel concrete lining. Background technique [0002] The diversion tunnel of the Longdong Hydropower Station in Kangding City is lined with a circular section, and the surrounding rock category is classified according to the design unit. Some tunnel sections need to be lined with concrete for unfavorable surrounding rock geological conditions, and steel formwork trolleys are used for concrete pouring. It is difficult for the steel formwork trolley to walk with a long distance, so the construction of the concrete lining of the cave body adopts the form of erecting steel pipe scaffolding. Because the lining section of the cave body is discontinuous, the steel pipe scaffolding needs to be completely dismantled after use. Transportation to the new lining site for re-erecting requires a lot of labor and the speed is slow, whi...

Claims

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Application Information

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IPC IPC(8): E21D11/18
CPCE21D11/183
Inventor 罗欢欢何太彬林毅熊辉陈宝唐凯刘丽谢伟邓健罗来伟
Owner SINOHYDRO BUREAU 5
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