CN105064203A - Telescopic bridge abutment structure - Google Patents
Telescopic bridge abutment structure Download PDFInfo
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- CN105064203A CN105064203A CN201510489493.4A CN201510489493A CN105064203A CN 105064203 A CN105064203 A CN 105064203A CN 201510489493 A CN201510489493 A CN 201510489493A CN 105064203 A CN105064203 A CN 105064203A
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- bridge abutment
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Abstract
The invention relates to a telescopic bridge abutment structure. The telescopic bridge abutment structure comprises at least two beam assemblies distributed in a mirror symmetry mode, and a preset telescopic structure is distributed between the beam assemblies. The telescopic bridge abutment structure is characterized in that the preset telescopic structure adopts a telescopic gap, the width of the telescopic gap is 30 millimeters to 50 millimeters, and a packing layer is arranged in the telescopic gap; meanwhile, a telescopic device is connected between the beam assemblies. Accordingly, when a bridge abutment is deformed due to temperature difference or outside stress, deformation can be transmitted to the telescopic gap, and hard impact on the beam assemblies cannot be caused; in addition, the absorption effect on the stress can be further improved due to the existence of the packing layer. The telescopic bridge abutment structure is simple in the whole construction and capable of reducing the construction difficulty of the follow-up bridge deck pavement technology and lowering the construction cost.
Description
Technical field
The present invention relates to a kind of bridge abutment structure, particularly relate to a kind of telescopic bridge abutment structure.
Background technology
With regard to existing highway bridge building field, can include abutment, it is positioned at bridge two ends, the building that supporting bridge superstructure is also connected mutually with embankment.Its function is except transmitting the load of bridge superstructure to except basis.The effect that also there is the pressure that bankets after keeping out platform, stablize Bridgehead by Blastig, end of the bridge circuit reliably and is reposefully connected with circuit on bridge.Abutment is generally barnacle or plain concrete construction, and light-weight abutment then adopts reinforced concrete structure.The braced structures thing between bridge and embankment junction is held to the greatest extent on bank or bridge opening.It plays a part to support superstructure and bankets with being connected after two sides road also will block Abutment Back simultaneously.Abutment has various ways, is mainly divided into gravity water wheel, light-weight abutment, frame type abutment, composite abutment, bears abutment etc.
Further, the conventional of abutment is highly no more than 10 meters, and minority is up to about 20 meters.General with the height of Bridgehead by Blastig depth of fill determination abutment.Overall length of bridge meet bridge opening drain off floodwaters or traffic requirement under bridge prerequisite under, high abutment, high embankment can be built at end of the bridge, also high embankment can be replaced with access bridge, extend bridge length, this depends primarily on the condition of the aspects such as bridge location Terrain, geology, cut-fill transition, reasonable use land and landscaping.When adopting high abutment, high embankment, should consider carefully technical safe and reliable, and the long-term loss of many land occupations, should not pursue merely and save bridge engineering and compress bridge length.Such as, high abutment should not be built across paddy bridge in mountain area on steep hillside; Urban Bridge, because fetching earth not easily, affecting the appearance of the city, is also often avoided high embankment and adopts access bridge.Arch bridge abutment must bear the horizontal thrust of arch springing, higher to foundation requirement, adopts arch bridge to cross over V-arrangement defile, is arranged in by abutment on rock brae, is conducive to bearing thrust at springer, is often a kind of bridge layout preferably.
In conjunction with its classification, have several as follows:
One, gravity water wheel
1, the type of gravity water wheel: gravity water wheel, according to the difference of span of bridge, finite element and orographic condition, has various ways.Conventional type has u abutment, buried abutment, Eight characters formula and I-shaped abutment etc.Gravity water wheel also has T-shaped abutment on railway bridge, other patterns such as cross abutment.
2, u abutment: u abutment is made up of, in the plane in U-shaped abutment body (front wall) platform cap, aileron that is basic and both sides.U abutment simple structure, basis end pressure-bearing surface is large, and stress is less, but bricklaying volume is large, the easy ponding that bankets in abutment, frost heave after freezing, and makes bridge abutment structure produce crack.
Two, buried abutment
In abutment abutment body slips by slope before being embedded in platform, do not need separately to establish aileron, only propose linking by the Er Qiangyu road at platform cap two ends.Buried abutment, abutment body is bricklaying entity, and platform cap and ear wall adopt steel concrete, when having slipped by slope suitable protection before platform and not destroyed by rush of water, can consider to slip by slope the active earth pressure of banketing.Therefore, buried abutment bricklaying quantity is comparatively economized, but stretches into bridge opening owing to slipping by slope, and have compressed river course, sometimes needs to increase bridge long.It is applicable to end of the bridge is shoal, slips by slope to be washed away less, and the depth of fill uses in the multiple span bridge of the Medium Span of below 10m.When geological condition is better, abutment body can be hollowed out and overarch, to save bricklaying, alleviate deadweight.
Three, light-weight abutment
1, the pattern that thin-walled light-weight abutment is conventional has cantilevered, buttress type, buttress formula and box etc.In the ordinary course of things, cantilevered abutment concrete quantity and steel using amount is higher, buttress formula and box template consumption higher.The advantage of Thin Walled Abutment and Thin-Wall Piers roughly the same, can according to finite elements, and the factor such as foundation strength and soil property is selected.
2, brace summer light-weight abutment single span or few across little of footpath bridge, when condition is permitted, between light-weight abutment or between platform and pier, 3 ~ 5 brace summers can be set.Brace summer is located at below erosion line or river bed paving line.Beam and abutment arrange anchoring peg, make soil pressure after superstructure and brace summer common support abutment pedestal.Now abutment and brace summer and superstructure form four to cut with scissors framework stressed.Light-weight abutment can adopt Eight characters formula and I-shaped aileron gear soil, as landform license, also can make ear wall, forms embed-type light-weight abutment and arrange to slip by slope.
Four, frame type abutment
Be generally queen post abutment, when bridge is wider, for reducing platform cap span, can polystyle be adopted, or directly on stake, build platform cap.Frame type abutment all adopts embed-type, arranges and slip by slope before platform.For meeting the connection of abutment and embankment, ear wall being set on platform cap top, if desired baffle plate being set in both sides, platform cap front.
Because above-mentioned defect, the design people, actively in addition research and innovation, to founding a kind of telescopic bridge abutment structure, make it have more value in industry.
There is a prior art 201520111858.5, which provide a kind of Abutment implicit expression expansion joint structure.
Specifically, it Expansion Joint filler packed layer comprising the premoulded expansion assembly on the abutment shrinkage joint being laid in institute's construction bridges and be filled in above described premoulded expansion assembly, the shrinkage joint stayed between the girder that described abutment shrinkage joint is institute's construction bridges and abutment; Described girder is covered with deck installation structure, the upper outside of described abutment is covered with road pavement layer and its upper inner is abutment revealed section, the reserved mounting groove installed for described premoulded expansion assembly is formed between described deck installation structure and described road pavement layer, the vertical bridge of described reserved mounting groove is greater than the spacing between girder and abutment to length, the sections be positioned in described girder below described reserved mounting groove is girder revealed section, sliding layer is equipped with on described girder revealed section upper berth, and described Slipping layers is between described premoulded expansion assembly and described girder revealed section; Described Expansion Joint filler packed layer is filled in described reserved mounting groove and it is connected between described deck installation structure and described road pavement layer, and the upper surface of Expansion Joint filler packed layer is concordant with the upper surface homogeneous phase of described road pavement layer with described deck installation structure; Described premoulded expansion assembly comprises type of putting more energy into transverse joint plate on the abutment shrinkage joint being erected on institute's construction bridges and to be connected to inside type transverse joint plate of putting more energy into and the waveform expansion and contraction plate be positioned on described girder revealed section, described in put more energy into type transverse joint plate and waveform expansion and contraction plate all lay along direction across bridge.
Simultaneously, described type transverse joint plate of putting more energy into comprises flat plate, is multiplely laid in open pore steel plate rib on flat plate from left to right along direction across bridge and multiple tracks is through at the connecting reinforcement laid on multiple described open pore steel plate rib and along direction across bridge, multiple described open pore steel plate rib all along vertical bridge to laying and its structure and size are all identical, connecting reinforcement described in multiple tracks is all laid on same plane; Described open pore steel plate rib is be the elongate steel plate of vertical runs with flat plate, and the middle part of open pore steel plate rib has multiple respectively for the through hole that connecting reinforcement described in multiple tracks passes from front to back; The inside and outside both sides of described flat plate are supported on described girder revealed section and described abutment revealed section respectively, and sliding layer is equipped with on described girder revealed section upper berth, and described Slipping layers is between described premoulded expansion assembly and described girder revealed section; Connecting reinforcement composition frame type reinforcing structure described in multiple described open pore steel plate rib and multiple tracks, connecting reinforcement described in multiple tracks is all embedded in Expansion Joint filler packed layer.
Further, the described outside of waveform expansion and contraction plate and the inner side of flat plate are fastenedly connected and are integrated, and the inner side of described waveform expansion and contraction plate is anchored on described deck installation structure by multiple anchoring piece; Described waveform expansion and contraction plate is provided with multiple WELDING STUDS, and multiple described WELDING STUDS is all embedded in Expansion Joint filler packed layer, and is fastenedly connected by multiple described WELDING STUDS between waveform expansion and contraction plate and Expansion Joint filler packed layer and is integrated.
Its actual problem that will solve is, the installation inconvenience that stretching device exists, stress performance and the problem such as durability is poor, application life is shorter.
But it cannot successfully manage the impact that external stress causes bridge, structure is too complicated simultaneously, is unfavorable for site operation.
Summary of the invention
For solving the problems of the technologies described above, the object of this invention is to provide a kind of telescopic bridge abutment structure.
Telescopic bridge abutment structure of the present invention, include the beam assembly of at least two distributions in specular, default stretching structure is distributed with between described beam assembly, wherein: described default stretching structure is shrinkage joint, the width at described shrinkage joint is 30 millimeters to 50 millimeters, packed layer is provided with in described shrinkage joint, stretching device is connected with between described beam assembly, described stretching device includes the substrate be arranged on beam assembly, engagement plate is connected with between described substrate, the thickness of described engagement plate is 5 millimeters to 10 millimeters, auxiliary connecting elements is provided with between described substrate and engagement plate, described base plate bottom is provided with positioning component.
Further, above-mentioned telescopic bridge abutment structure, wherein, described packed layer comprises some foams stacking from the bottom up filling plate and forms.
Further, above-mentioned telescopic bridge abutment structure, wherein, described foam filling plate equidistantly distributes tangible Varied clearance up and down each other, or described foam filling plate up and down each other non-equidistant be distributed with deformation gap, or described foam filling plate distribution bonded to each other.
Further, above-mentioned telescopic bridge abutment structure, wherein, the width at described shrinkage joint is 40 millimeters.
Further, above-mentioned telescopic bridge abutment structure, wherein, described auxiliary connecting elements is round steel and/or is steel strand, described round steel and/or be that steel strand are welded to connect with substrate, engagement plate simultaneously.
Further, above-mentioned telescopic bridge abutment structure, wherein, described engagement plate thickness is 8 millimeters.
Further, above-mentioned telescopic bridge abutment structure, wherein, described engagement plate is circular arc type engagement plate, and the radian of described circular arc type engagement plate is 10 degree to 30 degree.
Further, above-mentioned telescopic bridge abutment structure, wherein, described circular arc type engagement plate is embossing formula corrosion resistant plate, corrosion resistant plate upper epidermis and/or be that layer is distributed with embossed layers.
Further, above-mentioned telescopic bridge abutment structure, wherein, described positioning component for extend bar, described extension bar perpendicular to the horizontal plane of beam assembly, to downward-extension.
Again further, above-mentioned telescopic bridge abutment structure, wherein, described beam assembly is provided with holding tank, and described substrate is pre-buried to be arranged in holding tank.
By such scheme, the present invention at least has the following advantages:
1, when abutment occurs deformation because of the temperature difference or extraneous stress, shrinkage joint can be passed to by substrate, cooperatively interacting of engagement plate, rigid impact can not be caused by right beam assembly.
2, rely on the existence of packed layer, the assimilation effect of counter stress can be promoted further, improve application life and the safety of bridge construction entirety.
3, unitary construction of the present invention is simple, can remove the combination of transverse joint plate loaded down with trivial details in existing structure, straight dull and stereotyped, flexible version from, improve efficiency of construction.
4, by structure of the present invention, decrease the difficulty of construction of follow-up deck paving technique, reduce construction cost.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of manual, coordinates accompanying drawing to be described in detail as follows below with preferred embodiment of the present invention.
Accompanying drawing explanation
Fig. 1 is the cross-sectional configuration schematic diagram of telescopic bridge abutment structure.
In figure, the implication of each Reference numeral is as follows:
1 beam assembly 2 shrinkage joint
3 substrate 4 engagement plates
5 auxiliary connecting elements 6 foam filling plates
7 positioning components
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
See the telescopic bridge abutment structure of Fig. 1, it includes the beam assembly 1 of at least two distributions in specular.Consider that the guiding of normal deformational stress extends needs, between beam assembly 1, be distributed with default stretching structure, its unusual part is: default stretching structure of the present invention to be width the be shrinkage joint 2 of 30 millimeters to 50 millimeters.Specifically, in order to the needs that expand with heat and contract with cold during successfully managing routine use, in shrinkage joint 2, also packed layer is provided with.Meanwhile, consider and have effective flexible auxiliary connection, between beam assembly 1, be connected with stretching device.Further, stretching device of the present invention includes the substrate 3 be arranged on beam assembly 1, is connected with engagement plate 4 between this substrate 3.Further, in order to have certain ability of anti-deformation, the thickness of the engagement plate 4 of employing is 5 millimeters to 10 millimeters.Moreover, consider that the connection of site operation is convenient, between substrate 3 and engagement plate 4, be provided with auxiliary connecting elements 5.There is unnecessary loosening in order to the upper time that prevents uses, bottom substrate 3, be provided with positioning component 7.
In conjunction with the present invention one preferably embodiment, in order to the filling capacity of satisfied necessity, the packed layer adopted comprises some foams stacking from the bottom up filling plate 6 and forms.Specifically, consider day night temperature Change and the temperature brought of Seasonal conversion switch and affect, the stress that effective absorption is expanded with heat and contract with cold, tangible Varied clearance is equidistantly distributed each other at foam filling plate about 6, meanwhile, also can be adopt the distribution mode of non-equidistant to the deformation gap that distributes each other at foam filling plate about 6.Needing for the use under some special climate condition, can also be the distribution bonded to each other of foam filling plate 6.
Further, consider and can realize effectively connecting support, improve overall efficiency of construction, used herein to auxiliary connecting elements 5 for round steel and/or be steel strand.Meanwhile, consider the guarantee in conjunction with tightness, this round steel and/or be that steel strand are welded to connect with substrate 3, engagement plate 4 simultaneously.In other words, during reality, round steel or steel strand can be used to assist the needs connecting location simultaneously.Can also be that one end of engagement plate 4 is connected with substrate 3 by the welding of round steel, and the opposite side of engagement plate 4 is welded by steel strand and connects another block substrate 3.
Meanwhile, find by after repeatedly contrast experiment, under the prerequisite not affecting abutment integrated carrying ability, the width at shrinkage joint 2 is good with 40 millimeters.Further, when engagement plate 4 thickness is 8 millimeters, effective left and right can be born and pull deformation, from top to bottom institute's applied pressure can also be carried.In order to better consolidate above-mentioned performance, engagement plate 4 of the present invention is circular arc type engagement plate 4, and its radian is 10 degree to 30 degree.Moreover consider from skid resistance and resistance to pressure, this circular arc type engagement plate 4 is embossing formula corrosion resistant plate, corrosion resistant plate upper epidermis and/or be that layer is distributed with embossed layers.
Again further, in order to ensure that between construction and operating period, substrate 3 there will not be unnecessary displacement normally, effectively can carry the deformational stress that engagement plate 4 passes over simultaneously, positioning component 7 is for extending bar.Specifically, consider the effect that can have similar Needle localization, construction extends the horizontal plane of bar perpendicular to beam assembly 1, to downward-extension season.Further, in order to carry out effective auxiliary positioning to substrate 3, beam assembly 1 is provided with holding tank, substrate 3 is pre-buried to be arranged in holding tank.Like this, achieve substrate 3 and arrange with the conllinear in abutment integral level face, the laying of other material layers follow-up can not be affected.
Also can be found out by reference to the accompanying drawings by above-mentioned character express, after adopting the present invention, gather around and have the following advantages:
1, when abutment occurs deformation because of the temperature difference or extraneous stress, shrinkage joint can be passed to by substrate, cooperatively interacting of engagement plate, rigid impact can not be caused by right beam assembly.
2, rely on the existence of packed layer, the assimilation effect of counter stress can be promoted further, improve application life and the safety of bridge construction entirety.
3, unitary construction of the present invention is simple, can remove the combination of transverse joint plate loaded down with trivial details in existing structure, straight dull and stereotyped, flexible version from, improve efficiency of construction.
4, by structure of the present invention, decrease the difficulty of construction of follow-up deck paving technique, reduce construction cost.
The above is only the preferred embodiment of the present invention; be not limited to the present invention; should be understood that; for those skilled in the art; under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (10)
1. telescopic bridge abutment structure, include the beam assembly of at least two distributions in specular, default stretching structure is distributed with between described beam assembly, it is characterized in that: described default stretching structure is shrinkage joint, the width at described shrinkage joint is 30 millimeters to 50 millimeters, packed layer is provided with in described shrinkage joint, stretching device is connected with between described beam assembly, described stretching device includes the substrate be arranged on beam assembly, engagement plate is connected with between described substrate, the thickness of described engagement plate is 5 millimeters to 10 millimeters, auxiliary connecting elements is provided with between described substrate and engagement plate, described base plate bottom is provided with positioning component.
2. telescopic bridge abutment structure according to claim 1, is characterized in that: described packed layer comprises some foams stacking from the bottom up filling plate and forms.
3. telescopic bridge abutment structure according to claim 2, it is characterized in that: described foam filling plate equidistantly distributes tangible Varied clearance up and down each other, or described foam filling plate up and down each other non-equidistant be distributed with deformation gap, or described foam filling plate distribution bonded to each other.
4. telescopic bridge abutment structure according to claim 1, is characterized in that: the width at described shrinkage joint is 40 millimeters.
5. telescopic bridge abutment structure according to claim 1, is characterized in that: described auxiliary connecting elements is round steel and/or is steel strand, described round steel and/or be that steel strand are welded to connect with substrate, engagement plate simultaneously.
6. telescopic bridge abutment structure according to claim 1, is characterized in that: described engagement plate thickness is 8 millimeters.
7. telescopic bridge abutment structure according to claim 1, is characterized in that: described engagement plate is circular arc type engagement plate, and the radian of described circular arc type engagement plate is 10 degree to 30 degree.
8. telescopic bridge abutment structure according to claim 7, is characterized in that: described circular arc type engagement plate is embossing formula corrosion resistant plate, corrosion resistant plate upper epidermis and/or be that layer is distributed with embossed layers.
9. telescopic bridge abutment structure according to claim 1, is characterized in that: described positioning component for extend bar, described extension bar perpendicular to the horizontal plane of beam assembly, to downward-extension.
10. telescopic bridge abutment structure according to claim 1, is characterized in that: described beam assembly is provided with holding tank, described substrate is pre-buried to be arranged in holding tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510489493.4A CN105064203A (en) | 2015-08-11 | 2015-08-11 | Telescopic bridge abutment structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510489493.4A CN105064203A (en) | 2015-08-11 | 2015-08-11 | Telescopic bridge abutment structure |
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| CN105064203A true CN105064203A (en) | 2015-11-18 |
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| CN201510489493.4A Pending CN105064203A (en) | 2015-08-11 | 2015-08-11 | Telescopic bridge abutment structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111576197A (en) * | 2020-05-08 | 2020-08-25 | 中冶南方城市建设工程技术有限公司 | Assembled bridge abutment capable of relieving bumping at bridge head and construction method thereof |
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| CN202730641U (en) * | 2012-09-03 | 2013-02-13 | 史宝和 | Expansion joint structure of bridge |
| CN203668822U (en) * | 2013-12-03 | 2014-06-25 | 来安县新元机电设备设计有限公司 | Bridge expansion joint device |
| CN204875494U (en) * | 2015-08-11 | 2015-12-16 | 苏州同尚工程设计咨询有限公司 | Scalable abutment of plain type suitable for bridge |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002348810A (en) * | 2001-05-23 | 2002-12-04 | Sanyo Kagaku Corp | Embedded joint |
| CN201843223U (en) * | 2010-11-03 | 2011-05-25 | 广东韶钢松山股份有限公司 | Butt joint component for building floor expansion joints |
| CN201901844U (en) * | 2010-12-08 | 2011-07-20 | 衡水橡胶股份有限公司 | Expansion device for railway bridges |
| CN102061667A (en) * | 2011-01-27 | 2011-05-18 | 河南省新开元路桥工程咨询有限公司 | Method for arranging semi-integral hidden expansion joint for abutment and bridge girder |
| CN102704393A (en) * | 2012-05-25 | 2012-10-03 | 浙江大学 | Bridge deck continuous device applied to beam bridge and bridge deck continuous method |
| CN202730641U (en) * | 2012-09-03 | 2013-02-13 | 史宝和 | Expansion joint structure of bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111576197A (en) * | 2020-05-08 | 2020-08-25 | 中冶南方城市建设工程技术有限公司 | Assembled bridge abutment capable of relieving bumping at bridge head and construction method thereof |
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Application publication date: 20151118 |