CN105696464A - Suspension bridge concrete anchor anchoring device - Google Patents

Suspension bridge concrete anchor anchoring device Download PDF

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Publication number
CN105696464A
CN105696464A CN201610267189.XA CN201610267189A CN105696464A CN 105696464 A CN105696464 A CN 105696464A CN 201610267189 A CN201610267189 A CN 201610267189A CN 105696464 A CN105696464 A CN 105696464A
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China
Prior art keywords
anchor
anchorage
cable
concrete
anchoring
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CN201610267189.XA
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Chinese (zh)
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CN105696464B (en
Inventor
汤庆超
罗仕庭
沈良帅
张隆顺
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中国电建集团昆明勘测设计研究院有限公司
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/14Towers; Anchors ; Connection of cables to bridge parts; Saddle supports

Abstract

The invention discloses a suspension bridge concrete anchor anchoring device which comprises connector pull rods, anchor cable anchors, pre-stressed anchor cables, anchoring and pulling board concrete and anchor sealing concrete. The connector pull rods, the anchor cable anchors and the pre-stressed anchor cables are connected in sequence. Multiple parallel anchoring reinforcing steel bars are arranged on the periphery of each anchor cable anchor. Multiple layers of under-anchor reinforcing meshes are arranged at the end of each anchor cable anchor. Each anchoring reinforcing steel bar penetrates the corresponding under-anchor reinforcing meshes. The anchor cable anchors, the anchoring reinforcing steel bars and the under-anchor reinforcing meshes are embedded in the anchoring and pulling board concrete and the anchor sealing concrete. Each connector pull rod penetrates the corresponding under-anchor reinforcing meshes. The suspension bridge concrete anchor anchoring device is simple in structure, safe, reliable and convenient to construct; suspension bridge concrete anchor safety storage can be enhanced; when part of the pre-stressed anchor cables of suspension bridge concrete anchors fail, the anchoring device can get involved to act in time, the internal force of a main cable can be redistributed, the durability of the suspension bridge concrete anchors is improved, and bridge safety is guaranteed.

Description

Analysis of Suspension Bridges ' Anchorage anchor
Technical field
The invention belongs to science of bridge building field, relate to Analysis of Suspension Bridges ' Anchorage, be specifically related to improve a kind of anchor of Analysis of Suspension Bridges ' Anchorage safety。
Background technology
Analysis of Suspension Bridges ' Anchorage structure is generally divided into bridge anchorage, gravity anchor and rock anchorage, is mainly used in the pulling force of opposing main push-towing rope。
Considering for factors such as economic and construction conditions, suspension bridge rock anchor technology is used for Bridges in Mountainous Areas, main push-towing rope load most or all be undertaken by anchor cable, the effect of rock bolting directly affects the safety of bridge。
Usual prestress anchorage cable and main push-towing rope thread adopt form to be one to one attached, and the transmission that the feature of this connected mode is power is relatively clearer and more definite, and structural form is simple, it is possible to effectively reducing anchor plate concrete amount, shortcoming is that anchor cable global reliability is not good。Durability is the problem needing emphasis to consider in Analysis of Suspension Bridges ' Anchorage design, and the load of main push-towing rope thread is undertaken by corresponding prestress anchorage cable, if a certain failure of cable, then corresponding main push-towing rope thread is lost anchoring, it will affect the safety of bridge。
Summary of the invention
The technical problem to be solved is, overcome the above defect, a kind of simple in construction, safe and reliable, easy construction are provided, the anchor of Analysis of Suspension Bridges ' Anchorage safety stock can be strengthened, with the problem that solution reduces anchorage system safety coefficient due to indivedual failure of cables。
In order to solve techniques described above problem, Analysis of Suspension Bridges ' Anchorage anchor of the present invention, including adapter pull bar, Anchor Cable Anchorage, prestress anchorage cable, anchor tie plate concrete and sealing off and covering anchorage concrete, described adapter pull bar, Anchor Cable Anchorage and prestress anchorage cable are sequentially connected with, the periphery of described Anchor Cable Anchorage arranges a plurality of parallel anchor bar, the end of described Anchor Cable Anchorage arranges reinforced mesh under multilamellar anchor, described anchor bar passes from reinforced mesh described anchor, described Anchor Cable Anchorage, under anchor bar and anchor, reinforced mesh is embedded in described anchor tie plate concrete and sealing off and covering anchorage concrete, described adapter pull bar passes from reinforced mesh anchor。
As preferably, under anchor of the present invention, reinforced mesh is set to 3 ~ 6 layers。
Further, the two ends of anchor bar of the present invention are outwards rolled over;Described anchor bar is the reinforcing bar of diameter 20 ~ 32 millimeters。
Analysis of Suspension Bridges ' Anchorage anchor of the present invention, the periphery of its Anchor Cable Anchorage arranges a plurality of anchor bar parallel, the end of described Anchor Cable Anchorage arranges reinforced mesh under multilamellar anchor, under described anchor bar and anchor, reinforced mesh is embedded in anchor tie plate concrete and sealing off and covering anchorage concrete in advance, and surround Anchor Cable Anchorage, temporary support can be provided for adapter pull bar when construction;Under anchor, reinforced mesh dispersibles stress under anchorage, it is to avoid stress is concentrated。
Beneficial effects of the present invention: owing to employing structure described above, the advantages such as the present invention has simple in construction, easy construction, practical, effect is notable, when in rock anchor, certain prestress anchorage cable lost efficacy, first the power of the main push-towing rope thread of its correspondence be transferred to anchor, by anchor tie plate concrete, power is disperseed to other prestress anchorage cable, guarantee that main push-towing rope thread anchors, if a rock anchor failure of cable can be prevented effectively from, the situation that the main push-towing rope thread of its correspondence is also ineffective, improve the durability of Analysis of Suspension Bridges ' Anchorage to greatest extent, it is ensured that bridge security。
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the plane graph of reinforced mesh under anchor of the present invention;
Fig. 3 is the axonometric chart of anchor described in embodiment one;
Fig. 4 is the structural representation of anchor described in embodiment two。
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail。
Analysis of Suspension Bridges ' Anchorage anchor of the present invention, including adapter pull bar 1, Anchor Cable Anchorage 2, prestress anchorage cable 3, anchor tie plate concrete 4 and sealing off and covering anchorage concrete 5, described adapter pull bar 1, Anchor Cable Anchorage 2 and prestress anchorage cable 3 are sequentially connected with, the periphery of described Anchor Cable Anchorage 2 arranges a plurality of parallel anchor bar 6, the end of described Anchor Cable Anchorage 2 arranges reinforced mesh 7 under multilamellar anchor, described anchor bar 6 passes from reinforced mesh 7 described anchor, described Anchor Cable Anchorage 2, under anchor bar 6 and anchor, reinforced mesh 7 is embedded in described anchor tie plate concrete 4 and sealing off and covering anchorage concrete 5, described adapter pull bar 1 passes from reinforced mesh anchor 7。
As preferably, under anchor of the present invention, reinforced mesh 7 is set to 3 ~ 6 layers。
Further, the two ends of anchor bar 6 of the present invention are outwards rolled over;Described anchor bar 6 is the reinforcing bar of diameter 20 ~ 32 millimeters。
Embodiment one: the middle part of Anchor Cable Anchorage 2 of the present invention arranges a macropore, each aperture in both sides, macropore is prestress anchorage cable hole 10, for the connection of prestress anchorage cable 3 with Anchor Cable Anchorage 2, aperture is adapter tie rod hole 11, for the connection of adapter pull bar 1 with Anchor Cable Anchorage 2;Described anchor bar 6 is the high intensity straight steel bar of 25, from anchor, reinforced mesh 7 passes, described reinforced mesh 7 is set to five layers, under described anchor bar 6 and anchor, reinforced mesh 7 is embedded in anchor tie plate concrete 4 and sealing off and covering anchorage concrete 5 in advance, the rectangular shape of anchor bar 6 surrounds Anchor Cable Anchorage 2 parallel, under anchor, reinforced mesh 7 is arranged in rock anchor ground tackle 2 end, and described adapter pull bar 1 passes from reinforced mesh anchor 7。The quantity of described anchor is consistent with main push-towing rope thread quantity, the corresponding main push-towing rope thread 9 of each device and a prestress anchorage cable 3, primarily serves the purpose of dispersion stress under anchorage, it is to avoid stress is excessively concentrated。
The mechanical behavior of the present invention is as follows:
(1) under the equal non-failure case of prestress anchorage cable 3, the load of main rope of suspension bridge 8 disperses to undertake to main push-towing rope thread 9, and transmit the force to Anchor Cable Anchorage 2 by adapter pull bar 1, final load is transferred to prestress anchorage cable 3 by Anchor Cable Anchorage 2, prestress anchorage cable 3 undertake the load that main rope of suspension bridge 8 passes over;
(2) when prestress anchorage cable 3 exists part failure of cable, described anchor starts to get involved, undertake the load of main push-towing rope thread 9 corresponding to inefficacy anchor cable, under anchor, reinforced mesh 7 plays a role and avoids stress under anchorage to concentrate, load is transferred in anchor tie plate concrete 4 by parallel type anchor bar 6, disperse to undertake to other prestress anchorage cable 3 not lost efficacy by the load of main push-towing rope thread 9 corresponding for the anchor cable that lost efficacy by anchor tie plate concrete 4, it is to avoid part failure of cable and cause the situation that the main push-towing rope thread 9 of its correspondence also lost efficacy。
Embodiment two: described in the present embodiment, anchor bar 6 is the high intensity straight steel bar of 30, and two ends are outwards rolled over, described reinforced mesh 7 is set to four layers, described anchor bar 6 traverse from reinforced mesh anchor 7, strengthens the stability of anchor, and all the other are with embodiment one。
These are only the some embodiments of the present invention, not limitation of the present invention, the present invention can be applied equally to, in Tunnel-Type Anchorage of Suspension Bridge heavy stone used as an anchor and gravity anchor structure, as long as employing structure described above, to fall into protection scope of the present invention。

Claims (4)

1. an Analysis of Suspension Bridges ' Anchorage anchor, including adapter pull bar (1), Anchor Cable Anchorage (2), prestress anchorage cable (3), anchor tie plate concrete (4) and sealing off and covering anchorage concrete (5), described adapter pull bar (1), Anchor Cable Anchorage (2) and prestress anchorage cable (3) are sequentially connected with, it is characterized in that, the periphery of described Anchor Cable Anchorage (2) arranges a plurality of parallel anchor bar (6), the end of described Anchor Cable Anchorage (2) arranges reinforced mesh (7) under multilamellar anchor, described anchor bar (6) is traverse from reinforced mesh (7) described anchor, described Anchor Cable Anchorage (2), under anchor bar (6) and anchor, reinforced mesh (7) is embedded in described anchor tie plate concrete (4) and sealing off and covering anchorage concrete (5), described adapter pull bar (1) is traverse from reinforced mesh anchor (7)。
2. Analysis of Suspension Bridges ' Anchorage anchor according to claim 1, it is characterised in that under described anchor, reinforced mesh (7) is set to 3 ~ 6 layers。
3. Analysis of Suspension Bridges ' Anchorage anchor according to claim 1 or claim 2, it is characterised in that the two ends of described anchor bar (6) are outwards rolled over。
4. Analysis of Suspension Bridges ' Anchorage anchor according to claim 1 or claim 2, it is characterised in that the reinforcing bar that described anchor bar (6) is diameter 20 ~ 32。
CN201610267189.XA 2016-04-27 2016-04-27 Analysis of Suspension Bridges ' Anchorage anchor Active CN105696464B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610267189.XA CN105696464B (en) 2016-04-27 2016-04-27 Analysis of Suspension Bridges ' Anchorage anchor

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Application Number Priority Date Filing Date Title
CN201610267189.XA CN105696464B (en) 2016-04-27 2016-04-27 Analysis of Suspension Bridges ' Anchorage anchor

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CN105696464A true CN105696464A (en) 2016-06-22
CN105696464B CN105696464B (en) 2018-11-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111485493A (en) * 2020-03-25 2020-08-04 中国电建集团中南勘测设计研究院有限公司 Suspension bridge anchorage structure and implementation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103572701A (en) * 2013-10-08 2014-02-12 中铁十八局集团有限公司 Buckling anchor system combined rock anchor
CN103590338A (en) * 2012-12-17 2014-02-19 青岛温泉建设集团有限公司 Method for constructing composite tunnel concrete anchors of suspension bridge and rock anchor construction structure
CN204266121U (en) * 2014-11-12 2015-04-15 中铁十八局集团有限公司 Button anchor system combinations formula pile foundation support table anchorage
CN204738230U (en) * 2015-06-12 2015-11-04 中交一公局第三工程有限公司 Gravity anchor
CN205653703U (en) * 2016-04-27 2016-10-19 中国电建集团昆明勘测设计研究院有限公司 Suspension bridge anchorage anchor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103590338A (en) * 2012-12-17 2014-02-19 青岛温泉建设集团有限公司 Method for constructing composite tunnel concrete anchors of suspension bridge and rock anchor construction structure
CN103572701A (en) * 2013-10-08 2014-02-12 中铁十八局集团有限公司 Buckling anchor system combined rock anchor
CN204266121U (en) * 2014-11-12 2015-04-15 中铁十八局集团有限公司 Button anchor system combinations formula pile foundation support table anchorage
CN204738230U (en) * 2015-06-12 2015-11-04 中交一公局第三工程有限公司 Gravity anchor
CN205653703U (en) * 2016-04-27 2016-10-19 中国电建集团昆明勘测设计研究院有限公司 Suspension bridge anchorage anchor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111485493A (en) * 2020-03-25 2020-08-04 中国电建集团中南勘测设计研究院有限公司 Suspension bridge anchorage structure and implementation method thereof

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