CN105696457B - Bridge pier power consumption and the anti-crushed structure of Wasted-energy steel plate built in replaceable composite plate - Google Patents
Bridge pier power consumption and the anti-crushed structure of Wasted-energy steel plate built in replaceable composite plate Download PDFInfo
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- CN105696457B CN105696457B CN201610108438.0A CN201610108438A CN105696457B CN 105696457 B CN105696457 B CN 105696457B CN 201610108438 A CN201610108438 A CN 201610108438A CN 105696457 B CN105696457 B CN 105696457B
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- energy steel
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
Abstract
The present invention is a kind of bridge pier power consumption of Wasted-energy steel plate built in replaceable composite plate and anti-crushed structure, four sides ultra-high performance concrete (Ultra High Performance Concrete that respectively arrangement two piece be superimposed of the structure in bridge pier coxopodite section, UHPC preserved pipeline is used for placing Wasted-energy steel plate between) plate, two blocks of UHPC plates；Finish rolling deformed bar is horizontally through described UHPC plates and bridge pier coxopodite section, is anchored by high-strength nut and steel plate washer, and applying prestressing force by finish rolling deformed bar combines both into entirety；Described Wasted-energy steel plate is connected with the pre-buried rod iron in upper segment and cushion cap respectively by end reserving hole；Need to set rubber spacer between described bridge pier coxopodite section and UHPC plates and upper segment.Use present invention processing stem grafting seam section assembling bridge pier, it can not only ensure that bridge pier has good energy dissipation capacity under geological process excitation and prevents coxopodite section from occurring severe crush, and can be by changing UHPC plates and Wasted-energy steel plate after shake, realize the quick reparation to bridge pier, recover the use function of bridge in time, reduce influence of the earthquake to communications and transportation.
Description
Technical field
The present invention relates to middle highly seismic region bridge rapid construction technology and Seismic Design Method, more particularly to section assembling skill
Art, external prestressing technique and the damper technology consumed energy using metal material, belong to field of civil engineering.
Background technology
Stem grafting seam section assembling bridge pier because have rapid construction advantage and self-resetting capability, including port Zhuhai and Macao bridge with
Engineer applied has been obtained in some across river bridge spanning the seas including Canadian Federal bridge.The bridge pier of this form is by pier shaft edge
Some sections are vertically divided into, Reinforcement disconnects at segmental joints, are connected between section using " stem grafting seam ", or
Fill epoxy resin to improve the durability of bridge pier in seam crossing, then connected into section by the way of post-tensioned prestressing whole
Body.Domestic and foreign scholars are found by experimental and theoretical study, stem grafting stitch section assembling bridge pier under seismic stimulation energy dissipation capacity compared with
Difference, and easily crushed in coxopodite section.
To improve the energy dissipation capacity that stem grafting stitches section assembling bridge pier, at present using most in engineering practice and scientific research
Method be the built-in power consumption reinforcing bar in stem grafting seam section assembling bridge pier.Although this method can improve the power consumption energy of bridge pier
Power, but the residual deformation for shaking rear abutment can be caused to increase simultaneously, while built-in power consumption reinforcing bar is not easy to change after shake.
Using most in the problem of easily being crushed in seismic stimulation bottom section for stem grafting seam section assembling bridge pier, engineering
Method be to increase coxopodite section concrete constraint to improve the deformability of concrete, being included in coxopodite section concrete increases
Stirrup consumption, using concrete filled steel tube make coxopodite section or in coxopodite section concrete outer wrap FRP, this method really can
Enough mitigate degree of injury of the coxopodite section under seismic stimulation, but damage concrete there is also being difficult to change after shake the problem of.
The content of the invention
Technical problem：Replaceable ultra-high performance concrete (Ultra High are utilized it is an object of the invention to provide one kind
Performance Concrete, UHPC) Wasted-energy steel plate built in plate bridge pier power consumption with anti-crushed structure, utilize replaceable UHPC
Wasted-energy steel plate built in plate stitches energy dissipation capacity and anti-crushed coxopodite of the section assembling bridge pier under geological process excitation to improve stem grafting
Section crushing, stem grafting can be not only improved using this method stitch section assembling bridge pier energy dissipation capacity and prevents bottom under seismic stimulation
Section is crushed, and can be by changing impaired UHPC plates after shake and wherein built-in Wasted-energy steel plate is impaired quickly to repair
Bridge pier, recovers the use function of bridge in time.
Technical scheme：The present invention is that a kind of bridge pier of Wasted-energy steel plate built in replaceable composite plate consumes energy and anti-crushed structure,
The structure respectively arranges that preserved pipeline is used for putting between two blocks of UHPC plates being superimposed, two blocks of UHPC plates on four sides of bridge pier coxopodite section
Put Wasted-energy steel plate；Finish rolling deformed bar is horizontally through described UHPC plates and bridge pier coxopodite section, passes through high-strength nut and steel plate washer
Anchoring, applies prestressing force by finish rolling deformed bar and combines both into entirety；Described Wasted-energy steel plate passes through end preformed hole
Hole is connected by the pre-buried rod iron of cushion cap with upper segment respectively；Between described bridge pier coxopodite section and UHPC plates and upper segment
Rubber spacer need to be set, prevented in the case where geological process is encouraged because the collision of bridge pier coxopodite section causes upper segment to damage,
Upper segment will increase wall thickness with bridge pier coxopodite section seam crossing, be gradually reduced to wall thickness.
Pre-buried steel stick end diameter is slightly less than the reserving hole diameter of Wasted-energy steel plate end, and remainder diameter is more than power consumption
Core plate end reserving hole diameter, is fixed Wasted-energy steel plate by nut.
Wherein：
Described Wasted-energy steel plate end sets ribbed stiffener.
The inside dimension of described preserved pipeline is slightly larger than the outside dimension of Wasted-energy steel plate.
Described UHPC plates are made using the UHPC of incorporation micro steel fiber.
Beneficial effect：Present invention contrast prior art has advantages below：
1. the invention is separated vulnerable zone with protected district using capacity protection principle, applied using finish rolling deformed bar
Prestressing is integral using the UHPC plates as vulnerable zone and inner bottom sections as protected district, can pass through after shake
Loosening and tensioning again for finish rolling deformed bar, realizes the quick-replaceable to being damaged UHPC plates.
2. vulnerable zone uses UHPC plates, the property of " splitting without broken " that UHPC has by mixing of steel fiber can be made full use of
Matter and the corrosion resistant property having because structure is closely knit.
3. on four sides of bridge pier coxopodite section, two blocks of replaceable UHPC plates, the preserved pipeline for placing Wasted-energy steel plate are set respectively
It is arranged between two blocks of UHPC plates, such way is observed and changed to Wasted-energy steel plate after not only improving shake, is also beneficial to
Prevent Wasted-energy steel plate corrosion.
4. Wasted-energy steel plate outside dimension will be slightly smaller than the size of preserved pipeline, the UHPC of pipeline can prevent Wasted-energy steel plate
Occur buckling failure when being pressurized, the upper and lower end of Wasted-energy steel plate by end reserving hole respectively with upper segment and cushion cap
Pre-buried rod iron be connected, pre-buried rod iron and reserving hole linkage section diameter are less than reserving hole diameter, and remainder diameter is more than
Reserving hole diameter, so only Wasted-energy steel plate end need to can just be fixed using nut in outside, it is necessary to construction space it is small, both
Be conducive to the replacing to Wasted-energy steel plate after shake, also ensure that Wasted-energy steel plate can be with Free Transform under geological process excitation.
5. needing to set rubber spacer between stem grafting seam section assembling bridge pier coxopodite section and UHPC plates and upper segment, prevent ground
Because the collision of coxopodite section causes upper segment to damage under shake effect excitation, the damage that bridge pier may occur so is ensured that
Wound only concentrates on replaceable UHPC plates, is conducive in time recovering after shake the use function of bridge, is that earthquake relief work gains time.
Brief description of the drawings
Fig. 1 is structural section of the embodiment of the present invention；
Fig. 2 is construction top view of the embodiment of the present invention；
Fig. 3 is Wasted-energy steel plate structural map in the embodiment of the present invention.
Label declaration in figure：1- bridge piers coxopodite section, 2-UHPC plates, 3- preserved pipelines, 4- Wasted-energy steel plates, 5- ribbed stiffeners, 6-
Finish rolling deformed bar, 7- high-strength nuts, 8- steel plate washers, 9- ends reserving hole, 10- upper segments, the pre-buried rod irons of 11-, 12- spiral shells
Female and 13- rubber spacers.
Embodiment
The present invention is that a kind of stem grafting that improved by using Wasted-energy steel plate built in replaceable UHPC plates stitches section assembling bridge pier
The structure of energy dissipation capacity and the section crushing of anti-crushed coxopodite under geological process excitation, the structure needs to use replaceable UHPC
Plate, Wasted-energy steel plate, finish rolling deformed bar, nut, high-strength nut, steel plate washer, pre-buried rod iron and rubber spacer.
Described replaceable UHPC plates set provided pipe between two pieces, two blocks of UHPC plates respectively on four sides of bridge pier coxopodite section
Road, for placing Wasted-energy steel plate, described pipeline is symmetric with bridge pier center.
Described replaceable UHPC plates are integral by finish rolling deformed bar application prestressing combination with inner bottom section, lead to
The thickness for calculating and obtaining replaceable UHPC plates is crossed, using UHPC because mixing of steel fiber has the property of " splitting without broken ", it is ensured that shake
Afterwards replaceable UHPC plates only occur local damage and will not occurrence of large-area crushing, while inner bottom section is still remained intact, foot
Enough support top dead loads and connection different segment apply prestressing force, can quick-recovery bridge pier soon by replacing UHPC plates after shake.
Described preserved pipeline size is slightly larger than the outside dimension of Wasted-energy steel plate, and wherein Wasted-energy steel plate upper and lower end passes through end
Reserving hole is connected with the pre-buried rod iron in upper segment and cushion cap respectively, and pre-buried steel stick end diameter is slightly less than Wasted-energy steel plate end
The reserving hole diameter in portion, remainder diameter is then more than reserving hole diameter, and pre-buried rod iron passes through reserving hole, then consume energy steel
Plate end side props up pre-buried rod iron diameter increase section, and opposite side is fixed Wasted-energy steel plate using nut.Stem grafting stitches section assembling
Bridge pier can be waved in the horizontal direction under geological process excitation so that by tension and compression repeatedly elastoplasticity is occurred for Wasted-energy steel plate
Deformation, reaches the purpose of power consumption, and the wherein UHPC of pipeline can prevent that Wasted-energy steel plate from occurring buckling failure, power consumption rod iron with
Micro-pore is left between surrounding UHPC, it is ensured that Wasted-energy steel plate is when being pressurized with certain expansion space.
Pipeline and Wasted-energy steel plate in described replaceable UHPC plates are 12.
Need to set rubber spacer between stem grafting seam section assembling bridge pier coxopodite section and UHPC plates and upper segment, prevent earthquake
Because the collision of coxopodite section causes upper segment to damage under effect excitation.Upper segment will increase with coxopodite section seam crossing
Wall thickness, is gradually reduced to wall thickness, when can so ensure to change UHPC plates successively after shake, and bridge pier remains to effectively that top is permanent
Carry and prestressing force passes to cushion cap.
Stem grafting seam section assembling is improved by using Wasted-energy steel plate built in replaceable UHPC plates the invention provides one kind
Energy dissipation capacity of the bridge pier under geological process excitation and the structure (such as Fig. 1) for preventing that coxopodite section from crushing, described replaceable UHPC
Pipeline and Wasted-energy steel plate in plate are 12.
The process that the present invention is embodied is as follows：
Step 1：Stem grafting is stitched into each section of section assembling bridge pier and is transported to job site, each section edge on cushion cap from precast plant
It is vertical place in order it is errorless after, the cohesive good rubber spacer 13 in the bottom surface of upper segment 10, by post-tensioned prestressing by each section
Section connection is integral；
Step 2：One block of UHPC plate 2 (such as Fig. 2) is sequentially placed on 1 four sides of coxopodite section；
Step 3：Wasted-energy steel plate 4 is placed on to the groove of UHPC plates 2, and passes through 12 points of end reserving hole 9 and nut
It is not connected with the pre-buried rod iron 11 in upper segment 10 and cushion cap；
Step 4：Another block of UHPC plate 2 (such as Fig. 2) is sequentially placed on 1 four sides of coxopodite section, two blocks of UHPC plates 2 are in preserved pipeline
Alignd at 3, now Wasted-energy steel plate 4 is just in preserved pipeline 3；
Step 5：Finish rolling deformed bar 6 is passed through to the duct being reserved on coxopodite 1 and UHPC of section plates 2, according to《Highway bridge and culvert
Construction technique normalizing》(JTG/TF50-2011) regulation on tensioning finish rolling deformed bar 6, using relevant device to finish rolling
Spiral 6 applies prestressing force, and it is anchored using high-strength nut 7 and steel plate washer 8.
In the present embodiment, the UHPC plates 2 described in step 2 are made by the UHPC of incorporation micro steel fiber, UHPC plates 2
Thickness is obtained by calculating, to ensure that damage does not occur for inner bottom section 1 for calculating principle.
In the present embodiment, preserved pipeline 3 and Wasted-energy steel plate 4 are 12, provided pipe in the UHPC plates 2 described in step 3
The size of road 3 is slightly larger than the outside dimension of Wasted-energy steel plate 4, and when stem grafting seam section assembling bridge pier, occurred level becomes under geological process excitation
During shape, whole Wasted-energy steel plate 4 can Free Transform, give full play to energy dissipation capacity.
As described above, although the present invention has been represented and described with reference to specific preferred embodiment, it must not be explained
For to the limitation of itself of the invention., can be right under the premise of the spirit and scope of the present invention that appended claims are defined are not departed from
It makes a variety of changes in the form and details.
Claims (5)
1. bridge pier power consumption and the anti-crushed structure of Wasted-energy steel plate built in a kind of replaceable composite plate, it is characterised in that the structure exists
Preserved pipeline (3) is used between four sides of bridge pier coxopodite section (1) the UHPC plates (2) that respectively two pieces of arrangement is superimposed, two pieces of UHPC plates (2)
To place Wasted-energy steel plate (4)；Finish rolling deformed bar (6) is horizontally through described UHPC plates (2) and bridge pier coxopodite section (1), passes through
High-strength nut (7) and steel plate washer (8) anchoring, apply prestressing force by finish rolling deformed bar (6) and combine both into entirety；It is described
Wasted-energy steel plate (4) be connected respectively with the pre-buried rod iron (11) in upper segment (10) and cushion cap by end reserving hole (9)；
Need to set rubber spacer (13) between described bridge pier coxopodite section (1) and UHPC plates (2) and upper segment (10), prevent in earthquake
Because the collision of bridge pier coxopodite section (1) causes upper segment (10) to damage under effect excitation, upper segment (10) with bridge
Pier coxopodite section (1) seam crossing will increase wall thickness, be gradually reduced to wall thickness.
2. bridge pier power consumption and the anti-crushed structure of Wasted-energy steel plate built in replaceable composite plate according to claim 1, it is special
Levy and be, described Wasted-energy steel plate (4) end sets ribbed stiffener (5).
3. bridge pier power consumption and the anti-crushed structure of Wasted-energy steel plate built in replaceable composite plate according to claim 1, it is special
Levy and be, the inside dimension of described preserved pipeline (3) is slightly larger than the outside dimension of Wasted-energy steel plate (4).
4. bridge pier power consumption and the anti-crushed structure of Wasted-energy steel plate built in replaceable composite plate according to claim 1, it is special
Levy and be, described UHPC plates (2) are made using the UHPC of incorporation micro steel fiber.
5. bridge pier power consumption and the anti-crushed structure of Wasted-energy steel plate built in replaceable composite plate according to claim 1, it is special
Levy and be, described pre-buried rod iron (11) end diameter is slightly less than reserving hole (9) diameter of Wasted-energy steel plate (4) end, remaining
Section diameter is more than the diameter of Wasted-energy steel plate (4) end reserving hole (9), by nut (12) that Wasted-energy steel plate (4) is fixed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610108438.0A CN105696457B (en) | 2016-02-26 | 2016-02-26 | Bridge pier power consumption and the anti-crushed structure of Wasted-energy steel plate built in replaceable composite plate |
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| CN201610108438.0A CN105696457B (en) | 2016-02-26 | 2016-02-26 | Bridge pier power consumption and the anti-crushed structure of Wasted-energy steel plate built in replaceable composite plate |
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| CN105696457A CN105696457A (en) | 2016-06-22 |
| CN105696457B true CN105696457B (en) | 2017-08-25 |
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| CN109989340B (en) * | 2019-05-06 | 2024-02-23 | 卫军 | Ship collision preventing device with built-in frame structure |
| CN111041978B (en) * | 2019-12-11 | 2021-03-30 | 郑州第二市政建设集团有限公司 | Anti-seismic pier column structure |
| CN113373801A (en) * | 2021-06-30 | 2021-09-10 | 青岛理工大学 | But earthquake back quick replacement's prefabricated pier plasticity hinge structure |
| CN114319072A (en) * | 2021-12-09 | 2022-04-12 | 东南大学 | Hydraulic energy consumption device for self-resetting pier, anti-seismic system and construction method |
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| JP5004829B2 (en) * | 2008-02-29 | 2012-08-22 | 公益財団法人鉄道総合技術研究所 | Seismic reinforcement method for structure and reinforcement structure |
| CN202116975U (en) * | 2011-05-17 | 2012-01-18 | 中国地震局工程力学研究所 | Subsection prefabrication casing wall for steel fiber concrete |
| CN102304892B (en) * | 2011-07-29 | 2013-06-12 | 清华大学 | External energy-consumption self-resetting bridge pier stud structure system and realization method thereof |
| CN103882803B (en) * | 2014-03-19 | 2016-11-09 | 浙江建科减震科技有限公司 | A kind of replaceable landscape configuration presstressed reinforcing steel Self-resetting power consumption bridge pier |
| JP5597317B1 (en) * | 2014-04-16 | 2014-10-01 | 株式会社ハナミズキ・ブリッジ・プランニング | Seismic reinforcement structure for bridge piers |
| CN104847052B (en) * | 2015-04-29 | 2017-04-05 | 华侨大学 | A kind of damaged replaceable composite column structure |
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