Fabricated rock anchor rod composite foundation and construction method thereof

A technology of rock bolts and composite foundations, applied in the field of transmission tower foundations, can solve problems such as large influence of natural factors, low construction efficiency, long foundation production cycle, etc., meet environmental protection requirements, increase construction speed, and simple construction methods Effect

Inactive Publication Date: 2020-11-10
国网浙江省电力有限公司丽水供电公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to overcome the current problems of difficult construction conditions in mountainous areas, inconvenient transportation of foundation materials, long foundation production period, low construction efficiency, harsh concrete maintenance conditions, and greater influence by natural factors. A kind of prefabricated rock bolt composite foundation and its construction method

Method used

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  • Fabricated rock anchor rod composite foundation and construction method thereof
  • Fabricated rock anchor rod composite foundation and construction method thereof
  • Fabricated rock anchor rod composite foundation and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Embodiment 1: as Figure 1-2 As shown, a prefabricated rock-bolt composite foundation includes a prefabricated pottery foundation 1 and a bolt foundation 2, the prefabricated pottery foundation 1 is located in soil layer I, and the prefabricated pottery foundation 1 includes the existing Pouring, excavating, excavating, and expanding the bottom section 3 and several excavated pottery foundation concrete blocks 4, the excavated pottery foundation concrete block 4 has a height of 200-1000 mm in the vertical direction, including a prefabricated foundation segment 7 and a top floor prefabricated foundation segment 8. The excavated pottery foundation concrete block 4 is composed of the main reinforcement 41 of the assembled foundation section and the excavated pottery foundation concrete 42, and the excavation is carried out between the cast-in-place excavation base expansion section 3 and the excavation base concrete block 4 The basic mechanical connection device 5 is conne...

Embodiment 2

[0058] Embodiment 2: as Figure 8 As shown, the difference from Embodiment 1 lies in that the cross-sectional shape of the prefabricated excavated pottery foundation 1 in the vertical direction is rectangular.

Embodiment 3

[0059] Embodiment 3: as Figure 9 As shown, the difference from Embodiment 1 is that the cross-sectional shape of the prefabricated excavated pottery foundation 1 in the vertical direction is an inverted funnel shape.

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Abstract

The invention discloses a fabricated rock anchor rod composite foundation and a construction method thereof, and relates to the technology of power transmission tower foundations. The fabricated rockanchor rod composite foundation comprises a fabricated excavation foundation and an anchor rod foundation, the fabricated excavation foundation is located in a soil layer, and the fabricated excavation foundation comprises a cast-in-place excavation foundation expanded-base section and a plurality of excavation foundation concrete blocks; each excavation foundation concrete block is composed of afabricated foundation section main rib and excavation foundation concrete, the cast-in-place excavation foundation expanded-base section and the excavation foundation concrete blocks are connected through an excavation foundation mechanical connecting device, the anchor rod foundation is located in a rock stratum, and the anchor rod foundation comprises a plurality of anchor rods; and each anchorrod comprises anchoring section concrete or cement mortar and anchor bars arranged in the anchoring section concrete or the cement mortar, the upper portions of the anchor bars extend into the cast-in-place excavation foundation expanded-base section to form cast-in-place excavation foundation expanded-base section main bars, and the cast-in-place excavation foundation expanded-base section main bars are connected with the excavation foundation concrete blocks through the excavation foundation mechanical connecting device. The construction speed can be greatly increased, and the construction method is simple and easier to operate.

Description

technical field [0001] The invention relates to the foundation technology of transmission towers, in particular to an assembled rock bolt composite foundation and a construction method thereof. Background technique [0002] With the construction of UHV transmission lines in my country. More and more UHV transmission lines need to pass through mountainous areas. At present, there are mainly three types of tower foundations for transmission lines in mountainous areas: rock-embedded foundations, hole-digging foundations, and rock-bolt foundations. Due to the large load of UHV transmission lines, the size and amount of foundations for rock embedding and hole excavation are generally relatively large, and the excavation construction is also difficult. Compared with rock-embedded and hole-digging foundations, rock bolt foundations can make full use of the good bearing performance of rock foundations, and the amount of foundation concrete and earthwork excavation is small, which ...

Claims

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Application Information

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IPC IPC(8): E02D27/42E02D27/50E02D5/80
CPCE02D5/80E02D27/42E02D27/50E02D2600/30
Inventor 毛丽荣吴建勇吴群雄林和郑众安苏军峰李晓军曹夕祥邱小平叶吉超孙伟斌刘锡刘小杰董金朋谷振山
Owner 国网浙江省电力有限公司丽水供电公司
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