CN103952956A - Cross prestressed concrete beam - Google Patents
Cross prestressed concrete beam Download PDFInfo
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- CN103952956A CN103952956A CN201410204456.XA CN201410204456A CN103952956A CN 103952956 A CN103952956 A CN 103952956A CN 201410204456 A CN201410204456 A CN 201410204456A CN 103952956 A CN103952956 A CN 103952956A
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Abstract
The invention discloses a cross prestressed concrete beam, which belongs to the technical field of road traffic engineering, and overcomes the defects of small span, more pier studs and large dead load of an existing elevated road. The cross prestressed concrete beam comprises a middle frame formed by an east middle beam, a west middle beam, a north middle beam and a south middle beam, wherein a middle box girder is arranged inside the middle frame; an east end-part beam, a west end-part beam, a north end-part beam, a south end-part beam, an east box girder, a west box girder, a north box girder and a south box girder are arranged at the outer side of the middle frame; each beam is arranged on a pier. The cross prestressed concrete beam is large in structural span and small in dead load and requires few pier studs.
Description
Technical field
The invention belongs to road traffic engineering technical field, relate to highway, city intersection engineering, two elevated road are usual friendship aloft, adopts right-angled intersection prestressed concrete beam to solve usual friendship problem, is a kind of novel cross processing mode.
Background technology
Along with urban population constantly increases, urban construction scale is also in continuous expansion, in city, infrastructure is but restricting the development in city, traffic jam becomes the focus that in city, people pay close attention to, government department makes great efforts the problem that transport solution stops up always, also a lot of modes have been adopted: as reorganization and expansion road, newly-built road, elevated bridge etc., wherein elevated bridge is owing to relating to expropriation of land, removing seldom, it is very remarkable that engineering is built up rear effect, for using in more and more cities, mostly built up belt road form, road form is comparatively single.When two elevated road intersect, generally adopt graded crossing, by longer ramp bridge, connect, expropriation of land, the removal utmost point invest that corresponding increase is larger, and landscape effect is poor, so elevated road at grade intersection is a kind of good settling mode.
Existing elevated road at grade intersection structure is ordinary concrete girder construction, exists span little, and pier stud is many, the multiplex entity structure of beam portion, and from great defect, amount of concrete is at 0.7m3/m2.
Summary of the invention
For solving existing elevated road at grade intersection structure, be ordinary concrete girder construction, exist span little, pier stud is many, from great problem, the invention provides a kind of right-angled intersection prestressed concrete beam, and its technical scheme is as follows:
Right-angled intersection prestressed concrete beam:
Comprise by the join end to end central frame of the hollow that forms of east intermediate transverse girder, northern intermediate transverse girder, western intermediate transverse girder, southern intermediate transverse girder;
Intermediate box beam is installed in central frame;
Described intermediate box beam comprises the middle top board that is arranged on central frame top, and the central floor panel that is arranged on central frame bottom, between middle top board and central floor panel, latticed web is installed, described latticed web comprises the some blocks of intermediate lateral webs that are parallel to each other and extend along east-west direction, and the some central longitudinal that are parallel to each other and extend along North and South direction are to web;
East intermediate transverse girder arranged outside has end, east crossbeam, between east intermediate transverse girder and end, east crossbeam, east case beam is installed;
Described east case beam comprises the east top board being arranged between intermediate transverse girder top, east and crossbeam top, end, east, and be arranged on the east base plate between east intermediate transverse girder bottom and end, east crossbeam bottom, the some east transversal web that are parallel to each other and extend along east-west direction are installed between east top board and east base plate, east transversal web is corresponding with intermediate lateral web, between the northern termination of the northern termination of east intermediate transverse girder and end, east crossbeam, limit web is installed, between the southern termination of the southern termination of east intermediate transverse girder and end, east crossbeam, limit web is installed,
Northern intermediate transverse girder arranged outside has northern end crossbeam, between northern intermediate transverse girder and northern end crossbeam, northern case beam is installed;
Described northern case beam comprises the northern top board being arranged between northern intermediate transverse girder top and crossbeam top, northern end, and be arranged on the northern base plate between northern intermediate transverse girder bottom and northern end crossbeam bottom, the some blocks of longitudinal webs in the north that extend along North and South direction are installed between northern top board and northern base plate, it is northern that longitudinally web is corresponding to web with central longitudinal, between the northern termination, east of intermediate transverse girder and the termination, east of northern end crossbeam, limit web is installed, between the northern western termination of intermediate transverse girder and the western termination of northern end crossbeam, limit web is installed,
Western intermediate transverse girder arranged outside has western end crossbeam, between western intermediate transverse girder and western end crossbeam, western case beam is installed;
Described western case beam comprises the western top board being arranged between western intermediate transverse girder top and crossbeam top, western end, and be arranged on the western base plate between western intermediate transverse girder bottom and western end crossbeam bottom, some western transversal web of extending along east-west direction are installed between western top board and western base plate, western transversal web is corresponding with intermediate lateral web, between the western northern termination of intermediate transverse girder and the northern termination of western end crossbeam, limit web is installed, between the western southern termination of intermediate transverse girder and the southern termination of western end crossbeam, limit web is installed,
South intermediate transverse girder arranged outside has southern end crossbeam, between southern intermediate transverse girder and southern end crossbeam, southern case beam is installed;
Described southern case beam comprises the southern top board being arranged between southern intermediate transverse girder top and crossbeam top, southern end, and be arranged on the southern base plate between southern intermediate transverse girder bottom and southern end crossbeam bottom, the some blocks of longitudinal webs in south that extend along North and South direction are installed between south top board and southern base plate, longitudinally web is corresponding to web with central longitudinal in south, between the termination, east of intermediate transverse girder, south and the termination, east of southern end crossbeam, limit web is installed, between the western termination of intermediate transverse girder, south and the western termination of southern end crossbeam, limit web is installed,
The bottom of east intermediate transverse girder, northern intermediate transverse girder, western intermediate transverse girder, southern intermediate transverse girder, end, east crossbeam, northern end crossbeam, western end crossbeam, southern end crossbeam is provided with bearing, and bearing is arranged on bridge pier.
Preferably, described intermediate lateral web, central longitudinal are longitudinally provided with the reserving hole channel that is U font on web to web, east transversal web, northern longitudinally web, western transversal web, south;
Between adjacent east transversal web, intermediate lateral web, western transversal web, run through and be provided with the first long steel bundle;
One end of described the first long steel bundle is anchored at crossbeam top, end, east, the first long steel bundle is through the reserving hole channel at the reserving hole channel in the transversal web of east, intermediate transverse girder top, east, the reserving hole channel on intermediate lateral web, the reserving hole channel at western intermediate transverse girder top, the reserving hole channel in western transversal web, and the other end of the first long steel bundle is anchored at crossbeam top, western end;
The longitudinal web in adjacent the north, central longitudinal longitudinally run through and are provided with the second long steel bundle between web to web, south;
One end of described the second long steel bundle is anchored at crossbeam top, northern end, the second long steel bundle through the reserving hole channel at the reserving hole channel on northern longitudinally web, northern intermediate transverse girder top, central longitudinal to the reserving hole channel at the reserving hole channel on web, southern intermediate transverse girder top, south the longitudinal reserving hole channel on web, the other end of the second long steel bundle is anchored at crossbeam top, southern end.
Preferably, between the tooth piece on end, described east crossbeam bottom and east base plate, short steel bundle is installed;
Short steel bundle is installed between the tooth piece on the top board of east and middle top board, and this short steel bundle runs through the reserving hole channel at intermediate transverse girder top, east;
Between tooth piece on crossbeam bottom, northern end and northern base plate, short steel bundle is installed;
Between tooth piece on northern top board and middle top board, short steel bundle is installed, this short steel bundle runs through the reserving hole channel at northern intermediate transverse girder top;
Between tooth piece on crossbeam bottom, western end and western base plate, short steel bundle is installed;
Between tooth piece on western top board and middle top board, the reserving hole channel that this short steel bundle of short steel bundle runs through western intermediate transverse girder top is installed;
Between tooth piece on crossbeam bottom, end, south and southern base plate, short steel bundle is installed;
Between tooth piece on the top board of south and middle top board, short steel bundle is installed, this short steel bundle runs through the reserving hole channel at southern intermediate transverse girder top.
?preferably, described bridge pier is arranged on basis by cushion cap.
?preferably, described intermediate lateral web and central longitudinal respectively have five to web;
The longitudinal web in western part extending along North and South direction is also installed between western top board and western base plate;
The southern transversal web of extending along east-west direction is also installed between south top board and southern base plate.
During use, end, east crossbeam in the present invention, western end crossbeam, northern end crossbeam, southern end crossbeam are all connected with viaduct, viaduct is connected with ground level road again, also will on right-angled intersection prestressed concrete beam of the present invention, lay bridge floor, forms the elevated road of at grade intersection.
The present invention adopt two elevated road arrange respectively east-west to viaduct and south-north to viaduct, each direction is 4 motorways, crosspoint adopts at grade intersection, and on bridge, four intersections arrange the red signal system such as green, control travel each other intersection, interference problem.
The present invention respectively along east-west to and south-north to laying prestressed strand, steel bundle through top board, base plate, web and the middle crossbeam of case beam, arranges diverse location height at infall and avoids mutual impact respectively.Long steel bundle is in beam anchorage, and short steel bundle by the anchoring of tooth piece, is selected one-end tension or two ends stretch-draw according to stretch-draw space in case beam inner side, the short bundle of pretensioning, and bundle is elongated in posttension, and controls end tension stress.
Structural beams span of the present invention is large, can adopt 3 * 27m spanning, and pier stud is few, the multiplex hollow-core construction of beam portion, and from heavy and light, span centre amount of concrete is at 0.45m3/m2, and Liang Tirou, is beneficial to the driving of lower floor layer and dodges structure.
Long steel bundle in the present invention mainly meets longitudinal main beam stress function needs and arranges, in structure, join Shu Shiying and preferentially select long bundle, long bundle does not have the tooth piece at structure middle part, can avoid the problem of stress concentration of anchoring place, structure stress is more continuous, easily meets the designing requirement of the aspects such as intensity, rigidity.
During the construction of described right-angled intersection prestressed concrete beam, should strictly control pouring order of concrete, require first to water each across span centre part, L/4～3L/4, after water fulcrum part.The external employing large area template of showing up of beam, should handle seam problem well, to guarantee good looking appearance and the construction quality of beam body.Beam body concrete is built after end at every turn, whole seam should stay hole across L/4 vicinity.
It is a kind of by the above-mentioned construction method of right-angled intersection prestressed concrete beam while being applied in elevated bridge that the present invention also provides, and this construction method comprises following order and step:
(a) first utilize drilling machine construction pile foundation and cushion cap or excavation construction to expand basis.
(b) construction bridge pier.
(c) set up full framing, and carry out precompressed, eliminate support nonelastic deformation.Set up template, reinforcing bar and prestressed strand are installed.
(d) build continuous beam body concrete.
(e) continuous beam body concrete intensity reaches designing requirement post-stress steel bundle.
(f) deck paving and ancillary works construction.
Right-angled intersection prestressed concrete beam has the following advantages:
(a) two or more pieces elevated road at grade intersection, very practical under landform, atural object etc. are controlled.
(b) can guarantee alignment condition, easily meet view requirement, reduce expropriation of land, remove, take ground less.
(c) engineering is implemented smoothly, and the duration is short, saves engineering cost, economical rationality, technological innovation.
As the present invention, can further expand:
According to span size, can adopt the form of structure such as right-angled intersection reinforced concrete beam, right-angled intersection girder steel, to meet the user demand under different condition.
accompanying drawing explanation
Fig. 1 is two elevated road at grade intersection figure;
Fig. 2 is right-angled intersection prestressed concrete beam plan view of the present invention, there is shown each crossbeam and case beam;
Fig. 3 is right-angled intersection prestressed concrete beam plan view of the present invention, there is shown each web;
Fig. 4 is the Strands Layout figure of the right-angled intersection prestressed concrete beam in Fig. 2;
Fig. 5 is the A-A sectional drawing in Fig. 2;
Fig. 6 is the B-B sectional drawing in Fig. 2;
Fig. 7 is the C-C sectional drawing in Fig. 2;
Fig. 8 is the D-D sectional drawing in Fig. 2;
Fig. 9 is the bridge type arrangement diagram in Fig. 2.
the specific embodiment
Right-angled intersection prestressed concrete beam 1 as shown in Figure 2;
Comprise by the join end to end central frame of the hollow that forms of east intermediate transverse girder 11, northern intermediate transverse girder 14, western intermediate transverse girder 17, southern intermediate transverse girder 20;
Wherein, east intermediate transverse girder 11 is positioned in the east, along south and north to extension;
Western intermediate transverse girder 17 is positioned at west, along south and north to extension;
Northern intermediate transverse girder 14 is positioned at the north, along east and west to extension;
South intermediate transverse girder 20 is positioned at south, along east and west to extension;
Intermediate box beam 23 is installed in central frame;
Described intermediate box beam 23 comprises the middle top board 32 that is arranged on central frame top, and the central floor panel 33 that is arranged on central frame bottom, between middle top board 32 and central floor panel 33, latticed web is installed, described latticed web comprises five blocks of intermediate lateral webs 24 that are parallel to each other and extend along east-west direction, and five central longitudinal that are parallel to each other and extend along North and South direction are to web 25;
East intermediate transverse girder 11 outsides, the east of east intermediate transverse girder 11 is provided with end, east crossbeam 13, and end, east crossbeam 13, along south and north to extension, is provided with east case beam 12 between east intermediate transverse girder 11 and end, east crossbeam 13;
Described east case beam 12 comprises the east top board being arranged between east intermediate transverse girder 11 tops and crossbeam 13 tops, end, east, and be arranged on the east base plate between east intermediate transverse girder 11 bottoms and crossbeam 13 bottoms, end, east, five east transversal web 26 that are parallel to each other and extend along east-west direction are installed between east top board and east base plate, east transversal web 26 is corresponding with intermediate lateral web 24, between the northern termination of the northern termination of east intermediate transverse girder 11 and end, east crossbeam 13, limit web 38 is installed, between the southern termination of the southern termination of east intermediate transverse girder 11 and end, east crossbeam 13, limit web 38 is installed,
Northern intermediate transverse girder 14 outsides, the north of northern intermediate transverse girder 14 is provided with northern end crossbeam 16, and northern end crossbeam 16, along east and west to extension, is provided with northern case beam 15 between northern intermediate transverse girder 14 and northern end crossbeam 16;
Described northern case beam 15 comprises the northern top board being arranged between northern intermediate transverse girder 14 tops and crossbeam 16 tops, northern end, and be arranged on the northern base plate between northern intermediate transverse girder 14 bottoms and crossbeam 16 bottoms, northern end, five blocks of longitudinal webs 27 in the north that extend along North and South direction are installed between northern top board and northern base plate, it is northern that longitudinally web 27 is corresponding to web 25 with central longitudinal, between the northern termination, east of intermediate transverse girder 14 and the termination, east of northern end crossbeam 16, limit web 38 is installed, between the northern western termination of intermediate transverse girder 14 and the western termination of northern end crossbeam 16, limit web 38 is installed,
Western intermediate transverse girder 17 outsides, the west of western intermediate transverse girder 17 is provided with western end crossbeam 19, and western end crossbeam 19, along south and north to extension, is provided with western case beam 18 between western intermediate transverse girder 17 and western end crossbeam 19;
As shown in Figure 7, described western case beam 18 comprises the western top board 34 being arranged between western intermediate transverse girder 17 tops and crossbeam 19 tops, western end, and be arranged on the western base plate 35 between western intermediate transverse girder 17 bottoms and crossbeam 19 bottoms, western end, five western transversal web 29 of extending along east-west direction are installed between western top board 34 and western base plate 35, western transversal web 29 is corresponding with intermediate lateral web 24, between the western northern termination of intermediate transverse girder 17 and the northern termination of western end crossbeam 19, limit web 38 is installed, between the western southern termination of intermediate transverse girder 17 and the southern termination of western end crossbeam 19, limit web 38 is installed,
Intermediate transverse girder 20 outsides, south, the south of southern intermediate transverse girder 20 is provided with southern end crossbeam 22, and southern end crossbeam 22, along east and west to extension, is provided with southern case beam 21 between southern intermediate transverse girder 20 and southern end crossbeam 22;
As shown in Figure 6, described southern case beam 21 comprises the southern top board 36 being arranged between southern intermediate transverse girder 20 tops and crossbeam 22 tops, southern end, and be arranged on the southern base plate 37 between southern intermediate transverse girder 20 bottoms and crossbeam 22 bottoms, southern end, five blocks of longitudinal webs 31 in south that extend along North and South direction are installed between south top board 36 and southern base plate 37, longitudinally web 31 is corresponding to web 25 with central longitudinal in south, between the termination, east of intermediate transverse girder 20, south and the termination, east of southern end crossbeam 22, limit web 38 is installed, between the western termination of intermediate transverse girder 20, south and the western termination of southern end crossbeam 22, limit web 38 is installed,
As shown in Figure 9, the bottom of east intermediate transverse girder 11, northern intermediate transverse girder 14, western intermediate transverse girder 17, southern intermediate transverse girder 20, end, east crossbeam 13, northern end crossbeam 16, western end crossbeam 19, southern end crossbeam 22 is provided with bearing 2, and bearing 2 is arranged on bridge pier 3.
Described intermediate lateral web 24, central longitudinal are longitudinally provided with the reserving hole channel that is U font on web 31 to web 25, east transversal web 26, northern longitudinally web 27, western transversal web 29, south;
As shown in Figure 4, between adjacent east transversal web 26, intermediate lateral web 24, western transversal web 29, run through and be provided with the first long steel bundle 8;
As shown in Figure 5, one end of described the first long steel bundle 8 is anchored at crossbeam 13 tops, end, east, the first long steel bundle 8 is through the reserving hole channel in east transversal web 26, the reserving hole channel at east intermediate transverse girder 11 tops, reserving hole channel on intermediate lateral web 24, the reserving hole channel at western intermediate transverse girder 17 tops, reserving hole channel in western transversal web 29, the other end of the first long steel bundle 8 is anchored at crossbeam 19 tops, western end, in Fig. 5, only show left-half, be that western end crossbeam 19 is to intermediate lateral web 24 parts, right half part is that intermediate lateral web 24 is to end, east crossbeam 13 parts, because of symmetrical with left-half, only lacked a longitudinal web 28 in western part, therefore omit,
As shown in Figure 4, the longitudinal web 27 in adjacent the north, central longitudinal longitudinally run through and are provided with the second long steel bundle 7 between web 31 to web 25, south;
As shown in Figure 6, one end of described the second long steel bundle 7 is anchored at crossbeam 16 tops, northern end, the second long steel bundle 7 is through the reserving hole channel on northern longitudinally web 27, the reserving hole channel at northern intermediate transverse girder 14 tops, central longitudinal is to the reserving hole channel on web 25, the reserving hole channel at intermediate transverse girder 20 tops, south, reserving hole channel on the longitudinal web 31 in south, the other end of the second long steel bundle 7 is anchored at crossbeam 22 tops, southern end, in Fig. 6, only show left-half, be that southern end crossbeam 22 is to central longitudinal to web 25 parts, right half part is that central longitudinal is to web 25 to northern end crossbeam 16 parts, because of symmetrical with left-half, only lacked a southern transversal web 30, therefore omit,
As shown in Figure 4, on east intermediate transverse girder 11, western intermediate transverse girder 17, along North and South direction, run through and be provided with prestressed strand 6, on northern intermediate transverse girder 14, southern intermediate transverse girder 20, along east-west direction, run through and be provided with prestressed strand 6.
Between tooth piece on crossbeam 13 bottoms, end, described east and east base plate, short steel bundle 10 is installed;
Short steel bundle 10 is installed between the tooth piece on the top board of east and middle top board 32, and this short steel bundle 10 runs through the reserving hole channel at east intermediate transverse girder 11 tops;
As shown in Figure 6, between the tooth piece on northern end crossbeam 16 bottoms and northern base plate, short steel bundle 9 is installed;
Between tooth piece on northern top board and middle top board 32, short steel bundle 9 is installed, this short steel bundle 10 runs through the reserving hole channel at northern intermediate transverse girder 14 tops;
As shown in Figure 5, between the tooth piece on western end crossbeam 19 bottoms and western base plate, short steel bundle 10 is installed;
Between tooth piece on western top board and middle top board, short steel bundle 10 is installed, this short steel bundle 10 runs through the reserving hole channel at western intermediate transverse girder 17 tops;
As shown in Figure 6, between the tooth piece on southern end crossbeam 22 bottoms and southern base plate 37, short steel bundle 9 is installed;
Between tooth piece on the top board 36 of south and middle top board 32, short steel bundle 9 is installed, this short steel bundle 10 runs through the reserving hole channel at southern intermediate transverse girder 20 tops.
?as shown in Figure 9, described bridge pier 3 is arranged on basis 5 by cushion cap 4.
?as shown in Figure 3, the longitudinal web 28 in western part extending along North and South direction is also installed between described western top board 34 and western base plate 35;
The southern transversal web 30 of extending along east-west direction is also installed between south top board 36 and southern base plate 37.
As shown in Figure 7, the thing dual-side of the south and north flanks limit of described western top board 34, the south and north flanks limit of east top board, northern top board, the thing dual-side of southern top board 36 are provided with cantilever, and cantilever is wide is 275cm, the thick 20cm of cantilever outer rim, the thick 50cm of root.
Middle top board 32, western top board 34, east top board, northern top board, southern top board 36 can be designed to an integral body, and correspondingly, central floor panel 33, east base plate, northern base plate, western base plate 35, southern base plate 37 can be designed to an integral body.
Above-mentioned monolithic top board is thick is 23cm, and the distance between monolithic top board and unitary underframe is 200cm, the thick 22cm of base plate of the center between bridge pier and bridge pier, and the base plate of the junction of each case beam and each crossbeam is thickeied 42cm.
The slope of limit web is 4:1;
The limit web thickness 40cm of the center between bridge pier and bridge pier, the limit web of the junction of each case beam and each crossbeam is thickeied 65cm.
The wide 25m of standard bridge, according to Road width gradual change.Right-angled intersection prestressed concrete beam beam body horizontal wall inscription is consistent with deck transverse slope, and beam height is constant.
Claims (5)
1. right-angled intersection prestressed concrete beam, is characterized in that:
Comprise by the join end to end central frame of the hollow that forms of east intermediate transverse girder (11), northern intermediate transverse girder (14), western intermediate transverse girder (17), southern intermediate transverse girder (20);
Intermediate box beam (23) is installed in central frame;
Described intermediate box beam (23) comprises the middle top board (32) that is arranged on central frame top, and the central floor panel (33) that is arranged on central frame bottom, between middle top board (32) and central floor panel (33), latticed web is installed, described latticed web comprises the some blocks of intermediate lateral webs (24) that are parallel to each other and extend along east-west direction, and the some central longitudinal that are parallel to each other and extend along North and South direction are to web (25);
East intermediate transverse girder (11) arranged outside has end, east crossbeam (13), between east intermediate transverse girder (11) and end, east crossbeam (13), east case beam (12) is installed;
Described east case beam (12) comprises the east top board being arranged between east intermediate transverse girder (11) top and end, east crossbeam (13) top, and the east base plate between being arranged on bottom east intermediate transverse girder (11) bottom and end, east crossbeam (13), the some east transversal web (26) that are parallel to each other and extend along east-west direction are installed between east top board and east base plate, east transversal web (26) is corresponding with intermediate lateral web (24), limit web (38) is installed between the northern termination of the northern termination of east intermediate transverse girder (11) and end, east crossbeam (13), limit web (38) is installed between the southern termination of the southern termination of east intermediate transverse girder (11) and end, east crossbeam (13),
Northern intermediate transverse girder (14) arranged outside has northern end crossbeam (16), between northern intermediate transverse girder (14) and northern end crossbeam (16), northern case beam (15) is installed;
Described northern case beam (15) comprises the northern top board being arranged between northern intermediate transverse girder (14) top and northern end crossbeam (16) top, and the northern base plate between being arranged on bottom northern intermediate transverse girder (14) bottom and northern end crossbeam (16), the some blocks of longitudinal webs in the north (27) that extend along North and South direction are installed between northern top board and northern base plate, it is northern that longitudinally web (27) is corresponding to web (25) with central longitudinal, between the termination, east of northern intermediate transverse girder (14) and the termination, east of northern end crossbeam (16), limit web (38) is installed, between the western termination of northern intermediate transverse girder (14) and the western termination of northern end crossbeam (16), limit web (38) is installed,
Western intermediate transverse girder (17) arranged outside has western end crossbeam (19), between western intermediate transverse girder (17) and western end crossbeam (19), western case beam (18) is installed;
Described western case beam (18) comprises the western top board (34) being arranged between western intermediate transverse girder (17) top and western end crossbeam (19) top, and the western base plate (35) between being arranged on bottom western intermediate transverse girder (17) bottom and western end crossbeam (19), some western transversal web (29) of extending along east-west direction are installed between western top board (34) and western base plate (35), western transversal web (29) is corresponding with intermediate lateral web (24), between the northern termination of western intermediate transverse girder (17) and the northern termination of western end crossbeam (19), limit web (38) is installed, between the southern termination of western intermediate transverse girder (17) and the southern termination of western end crossbeam (19), limit web (38) is installed,
South intermediate transverse girder (20) arranged outside has southern end crossbeam (22), between southern intermediate transverse girder (20) and southern end crossbeam (22), southern case beam (21) is installed;
Described southern case beam (21) comprises the southern top board (36) being arranged between southern intermediate transverse girder (20) top and southern end crossbeam (22) top, and the southern base plate (37) between being arranged on bottom southern intermediate transverse girder (20) bottom and southern end crossbeam (22), the some blocks of longitudinal webs in south (31) that extend along North and South direction are installed between south top board (36) and southern base plate (37), longitudinally web (31) is corresponding to web (25) with central longitudinal in south, between the termination, east of south intermediate transverse girder (20) and the termination, east of southern end crossbeam (22), limit web (38) is installed, between the western termination of south intermediate transverse girder (20) and the western termination of southern end crossbeam (22), limit web (38) is installed,
The bottom of east intermediate transverse girder (11), northern intermediate transverse girder (14), western intermediate transverse girder (17), southern intermediate transverse girder (20), end, east crossbeam (13), northern end crossbeam (16), western end crossbeam (19), southern end crossbeam (22) is provided with bearing (2), and bearing (2) is arranged on bridge pier (3).
2. right-angled intersection prestressed concrete beam according to claim 1, is characterized in that:
Described intermediate lateral web (24), central longitudinal are longitudinally provided with the reserving hole channel that is U font on web (31) to web (25), east transversal web (26), northern longitudinally web (27), western transversal web (29), south;
Between adjacent east transversal web (26), intermediate lateral web (24), western transversal web (29), run through and be provided with the first long steel bundle (8);
One end of described the first long steel bundle (8) is anchored at end, east crossbeam (13) top, the first long steel bundle (8) is through the reserving hole channel at the reserving hole channel in east transversal web (26), east intermediate transverse girder (11) top, the reserving hole channel on intermediate lateral web (24), the reserving hole channel at western intermediate transverse girder (17) top, the reserving hole channel in western transversal web (29), and the other end of the first long steel bundle (8) is anchored at western end crossbeam (19) top;
The longitudinal web in adjacent the north (27), central longitudinal longitudinally run through and are provided with the second long steel bundle (7) between web (31) to web (25), south;
One end of described the second long steel bundle (7) is anchored at northern end crossbeam (16) top, the second long steel bundle (7) through the reserving hole channel at the reserving hole channel on northern longitudinally web (27), northern intermediate transverse girder (14) top, central longitudinal to the reserving hole channel at the reserving hole channel on web (25), southern intermediate transverse girder (20) top, south the longitudinal reserving hole channel on web (31), the other end of the second long steel bundle (7) is anchored at southern end crossbeam (22) top.
3. right-angled intersection prestressed concrete beam according to claim 1 and 2, is characterized in that:
Between tooth piece on end, described east crossbeam (13) bottom and east base plate, short steel bundle (10) is installed;
Between tooth piece on the top board of east and middle top board (32), short steel bundle (10) is installed, this short steel bundle (10) runs through the reserving hole channel at east intermediate transverse girder (11) top;
Between tooth piece on northern end crossbeam (16) bottom and northern base plate, short steel bundle (9) is installed;
Between tooth piece on northern top board and middle top board (32), short steel bundle (9) is installed, this short steel bundle (10) runs through the reserving hole channel at northern intermediate transverse girder (14) top;
Between tooth piece on western end crossbeam (19) bottom and western base plate, short steel bundle (10) is installed;
Between tooth piece on western top board and middle top board, the reserving hole channel that this short steel bundle (10) of short steel bundle (10) runs through western intermediate transverse girder (17) top is installed;
Between tooth piece on south end crossbeam (22) bottom and southern base plate (37), short steel bundle (9) is installed;
Between tooth piece on south top board (36) and middle top board, short steel bundle (9) is installed, this short steel bundle (10) runs through the reserving hole channel at southern intermediate transverse girder (20) top.
4. right-angled intersection prestressed concrete beam according to claim 3, is characterized in that:
Described bridge pier (3) is arranged on basis (5) by cushion cap (4).
5. right-angled intersection prestressed concrete beam according to claim 4, is characterized in that:
Described intermediate lateral web (24) and central longitudinal respectively have five to web (25);
Between western top board (34) and western base plate (35), the longitudinal web in western part (28) extending along North and South direction is also installed;
The southern transversal web (30) of extending along east-west direction is also installed between south top board (36) and southern base plate (37).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410204456.XA CN103952956B (en) | 2014-05-15 | 2014-05-15 | Right-angled intersection prestressed concrete beam |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100247325B1 (en) * | 1997-03-18 | 2000-03-15 | 이장휘 | Road crossing system |
| CN102220739A (en) * | 2011-04-01 | 2011-10-19 | 河南省交通规划勘察设计院有限责任公司 | Corrugated steel web prestressed concrete continuous box girder and construction method thereof |
| CN202047353U (en) * | 2011-03-22 | 2011-11-23 | 中国铁道科学研究院铁道建筑研究所 | Concrete bridge body of expressway or railway and prestressed concrete continuous box girder |
| CN202131546U (en) * | 2011-05-12 | 2012-02-01 | 解中原 | Motor vehicle and non-motor vehicle total-intercommunication flyover |
| CN203834302U (en) * | 2014-05-15 | 2014-09-17 | 中铁二院昆明勘察设计研究院有限责任公司 | Cross prestressed concrete beam |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100247325B1 (en) * | 1997-03-18 | 2000-03-15 | 이장휘 | Road crossing system |
| CN202047353U (en) * | 2011-03-22 | 2011-11-23 | 中国铁道科学研究院铁道建筑研究所 | Concrete bridge body of expressway or railway and prestressed concrete continuous box girder |
| CN102220739A (en) * | 2011-04-01 | 2011-10-19 | 河南省交通规划勘察设计院有限责任公司 | Corrugated steel web prestressed concrete continuous box girder and construction method thereof |
| CN202131546U (en) * | 2011-05-12 | 2012-02-01 | 解中原 | Motor vehicle and non-motor vehicle total-intercommunication flyover |
| CN203834302U (en) * | 2014-05-15 | 2014-09-17 | 中铁二院昆明勘察设计研究院有限责任公司 | Cross prestressed concrete beam |
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