Pre-stress anchor cable structure applicable to underground powerhouse rock wall crane beam portion

A technology of prestressed anchor cables and crane beams, applied in underwater structures, infrastructure engineering, buildings, etc., can solve the problem of increasing the deformation of the crane beams on the rock wall, unfavorable stability of the crane beam structure on the rock wall and the surrounding rock of the underground powerhouse, Increase the rock wall crane beam bolt load and other issues to achieve the effect of a complete support system

Inactive Publication Date: 2018-04-13
POWERCHINA HUADONG ENG COPORATION LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adopting this support measure is equivalent to the lack of prestressed anchor cable support at the rock wall crane girder of the high side wall of the underground powerhouse. The load increases the deformation of the crane beam on the rock wall, which is unfavorable to the stability of the crane beam structure on the rock wall and the surrounding rock of the underground powerhouse.

Method used

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  • Pre-stress anchor cable structure applicable to underground powerhouse rock wall crane beam portion
  • Pre-stress anchor cable structure applicable to underground powerhouse rock wall crane beam portion
  • Pre-stress anchor cable structure applicable to underground powerhouse rock wall crane beam portion

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Embodiment Construction

[0021] Such as figure 1 As shown, reference number 1 is an underground factory building, reference number 2 is a side wall of an underground factory building, reference number 3 is a rock wall crane beam structure, and reference number 4 is a prestressed anchor cable.

[0022] Such as figure 2 As shown, the main structure of the prestressed anchor cable 4 includes an inner anchor section 5 , a tension section 6 , and an outer anchor section 7 , and the prestressed anchor cable structure also includes a steel backing plate 8 and an anchor 9 .

[0023] The part of the prestressed anchor cable 4 in the inner anchorage section 5 is a steel strand 12a with no adhesive tape PE sleeve. According to the number of steel strands, it is divided into several groups with different lengths and embedded in the extruded sleeve 11 respectively. The extrusion sleeve is connected with the bearing plate 10, and the steel strand load is transferred to the bearing plate through the extrusion slee...

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Abstract

The invention provides a pre-stress anchor cable structure applicable to an underground powerhouse rock wall crane beam portion. Anchoring segments of the structure are divided into the inner anchoring segment and the outer anchoring segment; the inner anchoring segment is located on the inner side in a drill hole, and the outer anchoring segment is located on the outer side in the drill hole; a tensioning segment is located between the inner anchoring segment and the outer anchoring segment; and in the drill hole, a hole segment corresponding to the tensioning segment and a hole segment corresponding to the outer anchoring segment are partitioned through a slurry stopping bag, and cement slurry is poured in different stages. The pre-stress anchor cable structure applicable to the underground powerhouse rock wall crane beam portion can perform pre-stress anchor cable supporting of a system on a high-edge wall in time, and therefore surrounding rock deformation can be limited, stabilityand safety of a rock wall crane beam structure are guaranteed, and overall surrounding rock stability of an underground powerhouse is facilitated.

Description

technical field [0001] The invention relates to an excavation and support technology for underground powerhouses, in particular to a prestressed anchor cable structure suitable for crane beams on rock walls of underground powerhouses. Background technique [0002] In recent years, the construction of water conservancy and hydropower projects has developed rapidly. Due to the constraints of terrain and landforms, the powerhouses of hydropower stations mostly adopt underground structures. The support structure of the bridge crane in the underground powerhouse adopts the rock wall crane beam structure, which can not only reduce the span of the underground powerhouse, shorten the construction period, and save costs, but also can install and operate the bridge crane in advance, so it is widely used in the underground powerhouse of hydropower stations. [0003] With the continuous increase of installed capacity of hydropower stations, the span and height of underground powerhouses...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/045E02D5/76
CPCE02D5/76E02D29/04E02D2250/0046
Inventor 万祥兵程普方丹钱军补约依呷陆健健陈鹏邵兵赵修龙叶辉辉陈登义
Owner POWERCHINA HUADONG ENG COPORATION LTD
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