CN2913453Y - Gate frusta corbel pre-tensioned nondestructive reinforcing structure - Google Patents
Gate frusta corbel pre-tensioned nondestructive reinforcing structure Download PDFInfo
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- CN2913453Y CN2913453Y CN 200620124705 CN200620124705U CN2913453Y CN 2913453 Y CN2913453 Y CN 2913453Y CN 200620124705 CN200620124705 CN 200620124705 CN 200620124705 U CN200620124705 U CN 200620124705U CN 2913453 Y CN2913453 Y CN 2913453Y
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- gate
- bracket
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- bearing
- gate pier
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Abstract
A pier corbel prestress nondestructive reinforcement structure comprises a supporting structure of conventional radial gate comprising a radial gate, a pier, and a corbel hinged with a gate bearing, wherein the segmental steel bars are installed inside the pier at the upstream of the corbel. The reinforcement structure newly adds a prestress system based on the conventional radial gate supporting structure and comprising a bearing steel beam supporting the rear face of the corbel and transmitting the prestress force generated from prestressed cables to the corbel, the prestressed cables are oppositely installed on both sides of the corbel along the pushing force direction of the radial gate, the upstream anchoring end of the prestressed cable is embedded inside the pier, and the downstream stretching end is connected with the bearing steel beam. The reinforcement structure strengthens the supporting structure of radial gate, complements bearing bar, and improves the shear resistant ability of the gate bearing. Also the entirety of the orginal radial gate bearing and pier is not destroyed.
Description
Technical field
The utility model relates to the gate structure of flood spillway in the hydraulic engineering, flood discharging tunnel, and is particularly low to former fan-shaped under-reinforced or gate support anti-shear ability, and the harmless reinforced structure of a kind of gate pier bracket prestressing force that carries out.
Background technology
Referring to Fig. 1, for some conventional Segment gate structures, mainly comprise Segment gate 5, gate pier 8 and the bracket 1 hinged with gate support 7, reach a key member of gate pier and gate support 7 is water pressures that gate is born, can its reliability is directly connected to outlet structure escape works safe operation.For some old outlet structure escape works, because to the change according to design specifications of bracket arrangement of reinforcement institute, the fan-shaped reinforcing bar of the former design of gate support can not satisfy the requirement of current specifications, so need carry out repairing and reinforcing.
Under the normal condition, generally adopt the method for reinforcing to have: affixing steel plate, affixing carbon fabric (sheet), increase arrangement of reinforcement or increase section etc., but because this position reinforcing bar is intensive, it is very difficult to construct.So under the condition of not destroying gate support and fan-shaped reinforcing bar, must seek a kind of new approach.
Novel content
The purpose of this utility model is: provide a kind of under the prerequisite of not destroying the original structure globality, adopt prestress anchorage cable reinforcing structure to combine, to form the harmless reinforced structure of the gate pier bracket prestressing force that increases the gate support anti-shear ability with conventional structure.
The purpose of this utility model also is: provide a kind of and have high strength, underrelaxation steel strand, and consumption is few, it is little to take up space, and the gate pier bracket prestressing force of easy construction can't harm reinforced structure.
The purpose of this utility model is achieved in that
A kind of gate pier bracket prestressing force can't harm reinforced structure, comprises conventional Segment gate supporting construction: Segment gate, gate pier reach and the hinged bracket of gate support the fan-shaped reinforcing bar of bracket upstream side gate pier inside; It is characterized in that: this reinforced structure is a newly-increased prestress system on conventional Segment gate supporting construction basis, mainly comprises:
One pressure-bearing girder steel is supported on bracket behind, and is positioned at the perpendicular end of Segment gate thrust direction;
One prestress anchorage cable places the bracket both sides, and along Segment gate thrust direction symmetric arrangement, its upstream anchor fixed end is embedded in gate pier inside, and downstream stretch-draw end acts on the pressure-bearing girder steel.
Wherein: the upstream anchor fixed end is for drawing, press the mixed type anchor structure, its structure by: extruding anchor head, pressure-bearing billet, be enclosed in 8 * Φ, 8 reinforcing bars around the prestress anchorage cable, and prestress anchorage cable outside and the viscose glue separation layer of throwing off constitute, downstream stretch-draw end passes the preformed hole on the pressure-bearing girder steel, and be fixed on the pressure-bearing girder steel by the intermediate plate anchor head, this pressure-bearing girder steel is a combined type channel-section steel structure;
Above-mentioned upstream anchor fixed end oblique cutting is gone into gate pier inside, and the radius of curvature R of its rotation angle position＞a Φ is meant billet as the pressure-bearing backing plate between rotation angle position and the concrete, and its radius of curvature R is greater than 300mm; A is 20 for smooth tube numerical value; For corrugated conduit numerical value is 40; Φ 0 is the nominal diameter mm of prestress anchorage cable; On the gate pier in above-mentioned pressure-bearing girder steel downstream anchor bolt is housed in addition, this anchor bolt and the welding of pressure-bearing girder steel are fixing.
Since adopt the reinforcement means of prestress anchorage cable, so the utlity model has following advantage:
Simplify the layout of prestress anchorage cable, reduced fricting resistance loss;
Construction technology is easy, and prestress anchorage cable and gate pier concrete bond together by polymer mortar, do not influence the globality of original structure, have improved the durability of original structure;
Reach stressed even, the reinforcing clear thinking except that supplying principal rod, has still increased the anti-shear ability of gate support; Owing to adopted high strength, underrelaxation steel strand, so consumption is few, it is little to take up space, easy construction; This method for reinforcing engineering at home and abroad still belongs to precedent in using.
Description of drawings
Fig. 1 is the perspective view of existing Segment gate.
Fig. 2 is a structural representation of the present utility model.
Fig. 3 is the structural representation of Fig. 2 middle and upper reaches anchored end.
Fig. 4 is the A-A sectional view among Fig. 3.
Fig. 5 is the structural representation of anchor cable rotation angle position.
The specific embodiment
Further understand and be familiar with for the utility model is had, show in conjunction with the accompanying drawings and specific embodiment, be explained as follows;
Referring to Fig. 1-2, a kind of gate pier bracket prestressing force can't harm reinforced structure, comprise conventional Segment gate supporting construction: Segment gate 5, gate pier 8 and the bracket 1 hinged with gate support 7, these bracket 1 upstream side gate pier 8 inside are provided with fan-shaped reinforcing bar, this reinforced structure is a newly-increased prestress system on conventional Segment gate supporting construction basis, mainly comprises:
One pressure-bearing girder steel 2 is supported on bracket 1 behind, and is positioned at the perpendicular end of Segment gate 5 thrust F directions, and this pressure-bearing girder steel 2 is a combined type channel-section steel structure;
One prestress anchorage cable 3, place bracket 1 both sides, and along Segment gate 5 thrust direction symmetric arrangement, its upstream anchor fixed end 4 is embedded in gate pier 8 inside, stretch-draw end in downstream is bearing on the pressure-bearing girder steel 2 by intermediate plate anchor head 6, but balance portion arc door thrust is to the shearing force of bracket 1.
Referring to Fig. 3-4, the upstream anchor fixed end 4 of this prestress anchorage cable 3 is for drawing, press the mixed type anchor structure, and its structure is by extruding anchor head 41, pressure-bearing billet 42, the reinforcing bar 44 that is enclosed in 8 * Φ 8 around the prestress anchorage cable 3, and prestress anchorage cable 3 outsides and viscose glue separation layer 43 formations of throwing off.Since on pressure-bearing billet 42, be welded with 8 * Φ, 8 reinforcing bars 44, the stress state of anchorage zone improved greatly, again because the hangnail effect of reinforcing bar has then increased anchored force significantly.
Pass the preformed hole (not shown) on the pressure-bearing girder steel 2 referring to shown in Figure 2, downstream stretch-draw end, be fixed on the pressure-bearing girder steel 2 by intermediate plate anchor head 6, the load that applies on it is just in time opposite with Segment gate thrust F direction.The position of this downstream stretch-draw end is selected in bracket 1 behind, and is supported on bracket 1 downstream by pressure-bearing girder steel 2, can give full play to prestressed intensity effect, except that supplying principal rod, has still increased the anti-shear ability of gate support 7.
This apply prestressed reinforcement means requirement anchored end structure must be safe and reliable, so pressure-bearing girder steel 2 could be determined its sectional dimension after must checking by local bending resistance, shearing resistance and partial pressing.
It should be noted that: for preventing that pressure-bearing girder steel 2 topples in the stretching process, so on the gate pier 8 in pressure-bearing girder steel 2 downstreams the anchor bolt (not shown) is installed, this anchor bolt and pressure-bearing girder steel 2 weld fixing.
Referring to Fig. 5, during construction, upstream anchor fixed end 4 oblique cuttings of prestress anchorage cable 3 are gone into gate pier 8 inside, and it is consistent with the Segment gate thrust direction to change direction by corner, apply prestressing force again, after to be tensioned the finishing, whole prestress anchorage cable 3 is imbedded gate pier 8 inside by the groove that excavates in advance, packing/polymer mortar again, the pointing compacting is floating to get final product.
The radius of curvature R of above-mentioned prestress anchorage cable 3＞a Φ 0, its tensile strength reduction value is less than 5%.Wherein, a is an empirical coefficient, to smooth tube a=20; To corrugated conduit a=40; Φ 0 is the nominal diameter mm of prestress anchorage cable 3.During enforcement, adopt billet 51 as the pressure-bearing cushion block between rotation angle position and the concrete, only need the radius of curvature R at this position to get final product greater than 300mm, the prestressing force that is produced at this position prestress anchorage cable 3 can pass in the gate pier concrete safely for this reason.
In sum; because presstressed reinforcing steel adopts high-strength, underrelaxation steel strand, so the intensity height, consumption is few; it is little to take up space; easy construction does not destroy the globality of former supporting construction basically, and existing flood spillway and flood discharging tunnel have not only been carried out repairing and reinforcing; eliminated potential safety hazard; and having improved the safety factor of reservoir, the safety to protection reservoir downstream people's life and property has important effect.Simultaneously, normally dash, the retaining of flood spillway, flood discharging tunnel gate increases effectively regulating and storing of water resource, and for valuable water source is provided, ecological environment on every side also improves.
Claims (8)
1, the harmless reinforced structure of a kind of gate pier bracket prestressing force, comprise conventional Segment gate supporting construction: Segment gate, gate pier reach and the hinged bracket of gate support the fan-shaped reinforcing bar of bracket upstream side gate pier inside; It is characterized in that: this reinforced structure is a newly-increased prestress system on conventional Segment gate supporting construction basis, mainly comprises:
One pressure-bearing girder steel is supported on bracket behind, and is positioned at the perpendicular end of Segment gate thrust direction;
One prestress anchorage cable places the bracket both sides, and along Segment gate thrust direction symmetric arrangement, its upstream anchor fixed end is embedded in gate pier inside, and downstream stretch-draw end acts on the pressure-bearing girder steel.
2, according to the harmless reinforced structure of the described gate pier bracket of claim 1 prestressing force, it is characterized in that: above-mentioned upstream anchor fixed end is for drawing, press the mixed type anchor structure, its structure by: extruding anchor head, pressure-bearing billet, be enclosed in 8 * Φ, 8 reinforcing bars around the prestress anchorage cable, and prestress anchorage cable outside and the viscose glue separation layer of throwing off constitute.
3, according to the harmless reinforced structure of the described gate pier bracket of claim 1 prestressing force, it is characterized in that: above-mentioned downstream stretch-draw end passes the preformed hole on the pressure-bearing girder steel, and is fixed on the pressure-bearing girder steel by the intermediate plate anchor head.
4, according to claim 1 or the harmless reinforced structure of 3 described gate pier bracket prestressing force, it is characterized in that: above-mentioned pressure-bearing girder steel is a combined type channel-section steel structure.
5, according to claim 1 or the harmless reinforced structure of 2 described gate pier bracket prestressing force, it is characterized in that: above-mentioned upstream anchor fixed end oblique cutting is gone into gate pier inside, the radius of curvature R of its rotation angle position＞a Φ.
6, according to the harmless reinforced structure of the described gate pier bracket of claim 5 prestressing force, it is characterized in that: the radius of curvature R of above-mentioned rotation angle position＞a Φ 0, be meant billet as the pressure-bearing backing plate between rotation angle position and the concrete, its radius of curvature R is greater than 300mm.
7, according to the harmless reinforced structure of the described gate pier bracket of claim 6 prestressing force, it is characterized in that: above-mentioned a is 20 for smooth tube numerical value; For corrugated conduit numerical value is 40; Φ 0 is the nominal diameter mm of prestress anchorage cable.
8, according to the harmless reinforced structure of the described gate pier bracket of claim 1 prestressing force, it is characterized in that: on the gate pier in above-mentioned pressure-bearing girder steel downstream anchor bolt is housed, this anchor bolt and the welding of pressure-bearing girder steel are fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620124705 CN2913453Y (en) | 2006-06-30 | 2006-06-30 | Gate frusta corbel pre-tensioned nondestructive reinforcing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620124705 CN2913453Y (en) | 2006-06-30 | 2006-06-30 | Gate frusta corbel pre-tensioned nondestructive reinforcing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2913453Y true CN2913453Y (en) | 2007-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620124705 Expired - Fee Related CN2913453Y (en) | 2006-06-30 | 2006-06-30 | Gate frusta corbel pre-tensioned nondestructive reinforcing structure |
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| CN (1) | CN2913453Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102660938A (en) * | 2012-05-25 | 2012-09-12 | 黄河勘测规划设计有限公司 | Support structure of hydraulic hoist for open-top type arc gate |
| CN102747711A (en) * | 2011-04-22 | 2012-10-24 | 中国水电顾问集团贵阳勘测设计研究院 | Construction method and structure of concrete prestressed pier |
| CN102877442A (en) * | 2011-07-12 | 2013-01-16 | 中国水电顾问集团贵阳勘测设计研究院 | Stress anchoring end structure for sluice pier |
| CN105951683A (en) * | 2016-05-19 | 2016-09-21 | 中国葛洲坝集团第工程有限公司 | Construction method for corbel steel reinforcements of gate pier |
| CN109137838A (en) * | 2018-10-17 | 2019-01-04 | 长江勘测规划设计研究有限责任公司 | A kind of arc door support prestressed reinforcement structure and construction method |
| CN114059533A (en) * | 2021-12-17 | 2022-02-18 | 广东省源天工程有限公司 | Prestressed anchor rod device and method for reinforcing arc door support |
-
2006
- 2006-06-30 CN CN 200620124705 patent/CN2913453Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747711A (en) * | 2011-04-22 | 2012-10-24 | 中国水电顾问集团贵阳勘测设计研究院 | Construction method and structure of concrete prestressed pier |
| CN102877442A (en) * | 2011-07-12 | 2013-01-16 | 中国水电顾问集团贵阳勘测设计研究院 | Stress anchoring end structure for sluice pier |
| CN102877442B (en) * | 2011-07-12 | 2014-12-10 | 中国电建集团贵阳勘测设计研究院有限公司 | Gate pier prestressed anchorage end structure |
| CN102660938A (en) * | 2012-05-25 | 2012-09-12 | 黄河勘测规划设计有限公司 | Support structure of hydraulic hoist for open-top type arc gate |
| CN102660938B (en) * | 2012-05-25 | 2014-04-16 | 黄河勘测规划设计有限公司 | Support structure of hydraulic hoist for open-top type arc gate |
| CN105951683A (en) * | 2016-05-19 | 2016-09-21 | 中国葛洲坝集团第工程有限公司 | Construction method for corbel steel reinforcements of gate pier |
| CN105951683B (en) * | 2016-05-19 | 2018-03-23 | 中国葛洲坝集团第一工程有限公司 | Gate pier bracket Joint Re-bar Construction |
| CN109137838A (en) * | 2018-10-17 | 2019-01-04 | 长江勘测规划设计研究有限责任公司 | A kind of arc door support prestressed reinforcement structure and construction method |
| CN109137838B (en) * | 2018-10-17 | 2024-01-05 | 长江勘测规划设计研究有限责任公司 | Prestressed reinforcement structure of arc door support and construction method |
| CN114059533A (en) * | 2021-12-17 | 2022-02-18 | 广东省源天工程有限公司 | Prestressed anchor rod device and method for reinforcing arc door support |
| CN114059533B (en) * | 2021-12-17 | 2022-06-28 | 广东省源天工程有限公司 | Prestressed anchor rod device and method for reinforcing arc door support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070620 Termination date: 20130630 |