CN102425100A - Wide-bodied pedestrian overpass erected among buildings - Google Patents
Wide-bodied pedestrian overpass erected among buildings Download PDFInfo
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- CN102425100A CN102425100A CN2011102792783A CN201110279278A CN102425100A CN 102425100 A CN102425100 A CN 102425100A CN 2011102792783 A CN2011102792783 A CN 2011102792783A CN 201110279278 A CN201110279278 A CN 201110279278A CN 102425100 A CN102425100 A CN 102425100A
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Abstract
The invention relates to a wide-bodied pedestrian overpass erected among buildings, which is characterized in that a double-column pier is arranged between the buildings at both sides of a road and the road; the bottom part of the double-column pier is connected with a bored pile foundation assorted with the double-column pier; the top part of the pier is provided with a bent cap; the main bridge of the wide-bodied pedestrian overpass is arranged on the upper surface of the bent cap; cantilevers at both ends of the main bridge are respectively and fixedly connected with the buildings; the main bridge mainly comprises a through steel truss, a bottom sealing steel plate and a deck pavement; the steel truss is formed by connecting upper chord members, lower chord members, web members with steel cross bars; the bottom sealing steel plate is fixed on the lower surfaces of the steel cross bars; and the deck pavement is arranged above the steel cross bars. The wide-bodied pedestrian overpass erected among the buildings has the characteristics as follows: the modeling conception is novel; the design is particular; the service function and the sightseeing function are integrated; higher additional loads can be borne; the designed deck width is large; the stress condition is brighter and clearer; the workload of the design calculation can be greatly reduced; and simultaneously, the construction is convenient, and the influence of the construction process on traffic is less.
Description
Technical field
The present invention relates to a kind of expanded letter pedestrian overcrossing that is set up between the building, current adaptable across the connection between the building.Belong to pedestrian overcrossing building technology field.
Background technology
Pedestrian overcrossing is claimed People's Bank of China's overpass bridge again.Generally be built in the location that vehicle flowrate is big, the pedestrian is dense, perhaps intersection, square and above the railway.Pedestrian overcrossing only allows the pedestrian to pass through, and the conflict when being used to avoid wagon flow and stream of people's Plane intersects ensures passing through of people's safety, improves the speed of a motor vehicle, reduces traffic accident.
In the prior art, common overpass can be divided into three major types, is respectively suspended structure, support formula structure and hybrid combination.1, the overpass of suspended structure is main load-supporting part with bridge railings, and the not load-bearing of bridge plate itself that supplies the pedestrian to pass through is suspended on the bridge railing as spandrel girder; The overpass of this structure is combined togather structural element and practical parts; Can reduce the use of constructional materials, reduce construction costs relatively, but the overpass bridge railings volume of this structure is big, Heavy Weight; Have two aspect defectives: the sight line of pedestrian on bridge can be blocked by railing on the one hand; The so huge horizontal wall of railing of volume is in road on the other hand, and vehicular traffic and pedestrian's sight line is formed hinder, and the view that influences the city.2, the overpass of support formula structure directly is erected at the bridge of load-bearing on the bridge pier, supplies the bridge of pedestrian's walking to be layered on the bridge, and bridge railings only plays the protection pedestrian, not load-bearing, and there is the higher relatively defective of cost in the overpass of this type.3, the overpass of hybrid combination is the crossbred of above-mentioned two kinds of structures, and bridge railing and bridge are shared the load of bridge jointly as load-carrying members.There is following defective in the pedestrian overcrossing of this structure: the first, and it is less to attach load outside can bearing, the bridge deck width of design little (mostly less than 12m), the visitors flowrate that can carry is limited, can only satisfy single function of use, can't integrate the sightseeing function.The second, the structure stress situation is complicated, and the design-calculated workload is big, and construction period usually will be interrupted road traffic, long construction period.The 3rd, can't connect, can not coordinate mutually with the building of periphery with surrounding enviroment.
Summary of the invention
The object of the invention, be for solve pedestrian overcrossing of the prior art exist can't with the shortcoming that the building of periphery is connected, bridge deck width is little, structure stress is complicated, the design work amount is big, a kind of expanded letter pedestrian overcrossing that is set up between the building is provided,
The object of the invention can reach through taking following technical scheme:
Be set up in the expanded letter pedestrian overcrossing between the building, its design feature is:
1) between the building of road both sides and road, two-columned pier is set, the bottom of two-columned pier is connected with supporting with it bored pile foundation, at the top of bridge pier bent cap is set, the main bridge of expanded letter pedestrian overcrossing be arranged on bent cap above; The two ends cantilever of said main bridge is fixedly connected with building respectively;
2) mainly by comprising lower support type steel truss, back cover steel plate and deck paving, steel truss is formed by connecting upper chord, lower chord, web member and steel cross bar said main bridge, the back cover steel plate be fixed in the steel cross bar below, deck paving is located at the top of steel cross bar.
The object of the invention can also reach through taking following technical scheme:
A kind of embodiment of the present invention is: the two ends cantilever of said main bridge is connected with building through bindiny mechanism respectively; Said bindiny mechanism comprises the fixture that two covers are welded by
shape angle steel and the stack of
shape additional bar; And the connection steel plate that has the shrinkage joint; Two cover fixtures are arranged symmetrically in respectively on the cantilevered distal end and building of main bridge, and weld with fixture respectively at the two ends that connect steel plate; Be provided with in the shrinkage joint of said connection steel plate and fill out sealant.
A kind of embodiment of the present invention is: the junction at the lower chord of bent cap and steel truss is provided with chord member leveling board, bearing and bearing pad stone from top to bottom successively; Be welded with the antidetonation link stopper in chord member leveling board bottom surface.
A kind of embodiment of the present invention is: the relative both sides at said lower chord respectively are provided with stiffening rib.
A kind of embodiment of the present invention is: be provided with colored groove in the outside of said steel truss, be provided with the ditch in the inboard of steel truss.
A kind of embodiment of the present invention is: be provided with the girder steel roof truss at the top of said steel truss, on the girder steel roof truss, be provided with the upper frame steel plate.
A kind of embodiment of the present invention is: between two supporting piers of said two-columned pier, be provided with binder.
A kind of embodiment of the present invention is: the bridge deck width of said main bridge is 13.2 meters, and span is 28.50 meters, and the two ends cantilever is respectively 9.630 meters and 6.13 meters.
Beneficial effect of the present invention:
1, the present invention constitutes the harmonious overall structure of coordinating with the roadside buildings thing, therefore owing to the two ends cantilever with main bridge is connected with building through bindiny mechanism respectively; Can make the bed rearrangement overline bridge more seem lightly attractive in appearance, and open especially succinct under the bridge, vehicle smooth is without hindrance; It is novel to have moulding; Architectural design is unique, integrate function of use and sightseeing function, and the bridge deck width that can bear bigger imposed load, design is big, and stressing conditions is more clear, bright and clear; Can significantly reduce the design-calculated workload, have easy construction, characteristics that work progress is little to traffic impact simultaneously.Particularly can expanded letter overline bridge facade be fashioned into lines penetrating, that extremely coordinate with surrounding enviroment.
2, main bridge of the present invention adopts the prefabricated Steel Continuous trussed construction of two ends cantilever pattern; The transverse width of main bridge is 13.2 meters; Integrate function of use and sightseeing function; The bridge deck width that can bear bigger imposed load, design is big, and stressing conditions is more clear, bright and clear, can significantly reduce the design-calculated workload.
3, the present invention is provided with chord member leveling board, bearing and bearing pad stone from top to bottom successively between the lower chord of bent cap and steel truss; Be welded with the antidetonation link stopper in chord member leveling board bottom surface, can satisfy performances such as the due wind resistance of structure, antidetonation.
4, main bridge of the present invention is divided into two sections steel trusss, and steel truss is at produce in factory, and weld at the scene; Construction can lift up in the whole construction course of overline bridge as early as possible, reserves the road surface and makes automobile current; Traffic does not cause too big influence basically, has the advantage of easy construction and short construction period.
Description of drawings
Fig. 1 is that the pedestrian overcrossing of the specific embodiment of the invention gets the overall structure elevation.
Fig. 2 be among Fig. 1 A-A to sectional view.
Fig. 3 is the bridge pier of the specific embodiment of the invention, the elevation of pile foundation.
Fig. 4 is the bridge pier of the specific embodiment of the invention, the lateral view of pile foundation.
Fig. 5 be among Fig. 3 A-A to sectional view.
Fig. 6 be among Fig. 3 B-B to sectional view.
Fig. 7 is the structural representation of lower chord junction of bent cap and the steel truss of the specific embodiment of the invention.
Fig. 8 be among Fig. 7 A-A to sectional view.
Fig. 9 be among Fig. 7 B-B to sectional view.
Figure 10 is the structural representation of the bindiny mechanism of the specific embodiment of the invention.
The specific embodiment
Specific embodiment:
With reference to Fig. 1 ∽ Fig. 6, present embodiment comprises two-columned pier 1 and the supporting with it bored pile foundation 2 that is set up in the road both sides, is arranged at the bent cap 3 at bridge pier 1 top, is arranged at the main bridge 4 above the bent cap 3; The two ends cantilever of main bridge 4 is connected with building 5 respectively; Said main bridge 4 mainly is made up of lower support type steel truss 4-1, back cover steel plate 4-2 and the deck paving 4-3 of two sections welding; Steel truss 4-1 is formed by connecting upper chord 4-1-1, lower chord 4-1-2, web member 4-1-3 and steel cross bar 4-1-4; Back cover steel plate 4-2 be fixed in steel cross bar 4-1-4 below, deck paving 4-3 is located at the top of steel cross bar 4-1-4.The wide face width degree of said main bridge 4 is 13.2 meters, and span is 28.50m, and the two ends cantilever is respectively 9.630 meters and 6.13 meters.The outside of said steel truss 4-1 is provided with colored groove 4-1-6, its inboard is provided with ditch 4-1-7.The top of said steel truss 4-1 is provided with girder steel roof truss 4-1-8, and girder steel roof truss 4-1-8 is provided with upper frame steel plate 4-1-9.Be provided with binder 11 between two bridge piers of said two-columned pier 1.
With reference to Fig. 7, Fig. 8 and Fig. 9, between the lower chord 4-1-2 of bent cap 3 and steel truss 4-1, be provided with chord member leveling board 7, bearing 8 and bearing pad stone 9 from top to bottom successively; Be welded with antidetonation link stopper 10 in chord member leveling board 7 bottom surfaces.Two offsides of said lower chord 4-1-2 are respectively equipped with stiffening rib lower chord 4-1-5.
With reference to Figure 10, the two ends cantilever of said main bridge 4 is connected with building through bindiny mechanism respectively; Said bindiny mechanism comprises the fixture that two covers are superposeed and are welded by
shape angle steel 6-1 and
shape additional bar 6-2; And the connection steel plate 6-3 that has the shrinkage joint; Two cover fixtures are arranged symmetrically in respectively on the cantilevered distal end and building 5 of main bridge 4, and weld with fixture respectively at the two ends that connect steel plate 6-3; Be provided with among the shrinkage joint 6-3-1 of said connection steel plate 6-3 and fill out sealant.
Job practices of the present invention is following:
Two steel trusss of main bridge adopt hoisting technology, Cast-in-place concrete structure of main bridge after lifting is accomplished.Pedestrian overcrossing is positioned on the Zhujiang River main road of heavy traffic, and construction period can not be interrupted road traffic, so steel truss must be at produce in factory, on-the-spot welding construction.
The first step: construction pile foundation, bridge pier; While prefabrication steel truss.
Second step: set up falsework, transportation truss semiproduct are to the job site, and the piecemeal lifting is welded simultaneously.
The 3rd step: deck paving and railing are installed, are hung flowerpot, bridge floor is decorated, Cheng Qiao.
Main design considerations of the present invention is following:
1) design parameters:
Adopt according to " loading code for design of building structures " GB 50009-20017.1.1:
Wind load calculating formula: Wk=β gz * μ z * μ s * W0.Wherein: Wk: act on the characteristi cvalue o fwindload (kN/m2) on the photovoltaic arrays, B gz: the gustness factor of instantaneous blast, it is fixed to get by " loading code for design of building structures " GB 50009-2001.
According to different places type, calculate by following formula: β gz=K (1+2 μ f), wherein K is regional roughness adjustment coefficient, μ f is a ripple factor:
Category-A place: β gz=0.92* (1+2 μ f) is wherein: μ f=0.387* (Z/10) ^ (0.12);
Category-B place: β gz=0.89* (1+2 μ f) is wherein: μ f=0.5 (Z/10) ^ (0.16);
C class place: β gz=0.85* (1+2 μ f) is wherein: μ f=0.734 (Z/10) ^ (0.22);
D class place: β gz=0.80* (1+2 μ f) is wherein: μ f=1.2248 (Z/10) ^ (0.3);
μ z---height variation factor of wind pressure, it is fixed to get by " loading code for design of building structures " GB 50009-2001, according to different places type, calculates by following formula:
Category-A place: μ z=1.379 * (Z/10) 0.24;
Category-B place: μ z=(Z/10) 0.32;
C class place: μ z=0.616 * (Z/10) 0.44;
D class place: μ z=0.318 * (Z/10) 0.60;
This engineering belongs to the category-B area, so μ z=1.379 * (Z/10) 0.24, μ s---shapefactorofwindload is taken as by " loading code for design of building structures " GB 50009-2001: 2.0, and the W0---wind reference pressure by on-the-spot wind speed test wind pressure diagram, is taken as 0.7kN/m2
2) geological process: the seismic design earthquake intensity is taken as 7 degree, and the earthquake effect coefficient is taken as 0.08.
3) temperature action: a year variations in temperature is taken as 80 degrees centigrade.
The above; Be merely the preferable specific embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any technician who is familiar with the present technique field is equal to replacement or change according to technical scheme of the present invention and inventive concept thereof in the scope that the present invention discloses, all belong to protection scope of the present invention.
Claims (9)
1. be set up in the expanded letter pedestrian overcrossing between the building, it is characterized in that:
1) between the building (5) of road both sides and road, two-columned pier (1) is set; The bottom of two-columned pier (1) is connected with supporting with it bored pile foundation (2); At the top of bridge pier (1) bent cap (3) is set, the main bridge (4) of expanded letter pedestrian overcrossing be arranged on bent cap (3) above; The two ends cantilever of said main bridge (4) is fixedly connected with building (5) respectively;
2) said main bridge (4) is mainly by comprising lower support type steel truss (4-1), back cover steel plate (4-2) and deck paving (4-3); Steel truss (4-1) is formed by connecting upper chord (4-1-1), lower chord (4-1-2), web member (4-1-3) and steel cross bar (4-1-4); Back cover steel plate (4-2) be fixed in steel cross bar (4-1-4) below, deck paving (4-3) is located at the top of steel cross bar (4-1-4).
2. the expanded letter pedestrian overcrossing that is set up between the building according to claim 1 is characterized in that: the two ends cantilever of said main bridge (4) is connected with building (5) through bindiny mechanism respectively; Said bindiny mechanism comprises the fixture that two covers are welded by
shape angle steel (6-1) and the stack of
shape additional bar (6-2); And the connection steel plate (6-3) that has the shrinkage joint; Two cover fixtures are arranged symmetrically in respectively on the cantilevered distal end and building (5) of main bridge (4), and weld with fixture respectively at the two ends that connect steel plate (6-3); Be provided with in the shrinkage joint (6-3-1) of said connection steel plate (6-3) and fill out sealant.
3. the expanded letter pedestrian overcrossing that is set up between the building according to claim 1 and 2 is characterized in that: said lower support type steel truss (4-1) is made up of the steel truss welding of two sections same structures.
4. the expanded letter pedestrian overcrossing that is set up between the building according to claim 1 and 2 is characterized in that: the junction at the lower chord (4-1-2) of bent cap (3) and steel truss (4-1) is provided with chord member leveling board (7), bearing (8) and bearing pad stone (9) from top to bottom successively; Be welded with antidetonation link stopper (10) in chord member leveling board (7) bottom surface.
5. the expanded letter pedestrian overcrossing that is set up between the building according to claim 1 and 2 is characterized in that: respectively be provided with stiffening rib (4-1-5) in the relative both sides of said lower chord (4-1-2).
6. the expanded letter pedestrian overcrossing that is set up between the building according to claim 1 and 2 is characterized in that: be provided with colored groove (4-1-6) in the outside of said steel truss (4-1), be provided with ditch (4-1-7) in the inboard of steel truss (4-1).
7. the expanded letter pedestrian overcrossing that is set up between the building according to claim 1 and 2 is characterized in that: be provided with girder steel roof truss (4-1-8) at the top of said steel truss (4-1), on girder steel roof truss (4-1-8), be provided with upper frame steel plate (4-1-9).
8. the expanded letter pedestrian overcrossing that is set up between the building according to claim 1 and 2 is characterized in that: between two supporting piers of said two-columned pier (1), be provided with binder (11).
9. the expanded letter pedestrian overcrossing that is set up between the building according to claim 1 and 2 is characterized in that: the bridge deck width of said main bridge (4) is 13.2 meters, and span is 28.50 meters, and the two ends cantilever is respectively 9.630 meters and 6.13 meters.
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| CN2011102792783A CN102425100A (en) | 2011-09-20 | 2011-09-20 | Wide-bodied pedestrian overpass erected among buildings |
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| CN2011102792783A CN102425100A (en) | 2011-09-20 | 2011-09-20 | Wide-bodied pedestrian overpass erected among buildings |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958766A (en) * | 2017-04-07 | 2017-07-18 | 安徽建筑大学 | Road lamp structure device is reformed transform deeply in narrow lane in huizhou tradition colony |
| CN108193591A (en) * | 2017-12-30 | 2018-06-22 | 贵阳铝镁设计研究院有限公司 | A kind of aluminum alloy pedestrian bridge steel bridge pier on the anti-edge of extended position band |
| CN110067197A (en) * | 2019-05-27 | 2019-07-30 | 江苏工程职业技术学院 | One kind climbing wall-shaped bridge wind pressure alarming robot and control method |
| CN112458886A (en) * | 2020-12-18 | 2021-03-09 | 南南铝工程有限责任公司 | Half calabash shape aluminum alloy pedestrian bridge connection structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958766A (en) * | 2017-04-07 | 2017-07-18 | 安徽建筑大学 | Road lamp structure device is reformed transform deeply in narrow lane in huizhou tradition colony |
| CN106958766B (en) * | 2017-04-07 | 2019-05-28 | 安徽建筑大学 | Do street lamp reconstruction structure device deeply in a kind of lane traditional settlement Nei Zhai |
| CN108193591A (en) * | 2017-12-30 | 2018-06-22 | 贵阳铝镁设计研究院有限公司 | A kind of aluminum alloy pedestrian bridge steel bridge pier on the anti-edge of extended position band |
| CN110067197A (en) * | 2019-05-27 | 2019-07-30 | 江苏工程职业技术学院 | One kind climbing wall-shaped bridge wind pressure alarming robot and control method |
| CN112458886A (en) * | 2020-12-18 | 2021-03-09 | 南南铝工程有限责任公司 | Half calabash shape aluminum alloy pedestrian bridge connection structure |
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Application publication date: 20120425 |