CN103669201B - Y-shaped pier used for steel pipe concrete truss girder - Google Patents
Y-shaped pier used for steel pipe concrete truss girder Download PDFInfo
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- CN103669201B CN103669201B CN201310745942.8A CN201310745942A CN103669201B CN 103669201 B CN103669201 B CN 103669201B CN 201310745942 A CN201310745942 A CN 201310745942A CN 103669201 B CN103669201 B CN 103669201B
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Abstract
The invention discloses a Y-shaped pier used for a steel pipe concrete truss girder. The Y-shaped pier comprises a Y-shaped pier body supporting the truss girder, wherein the Y-shaped pier body comprises a main vertical pier body and two branch inclined pier bodies, and the main vertical pier body and the two branch inclined pier bodies are of steel pipe concrete structures; the truss girder comprises an upper chord, a lower chord and a plurality of rows of web members, each row of web members comprises two web members, the upper chord is arranged in the transverse bridge direction, and the lower chord is arranged in the longitudinal bridge direction and arranged under the upper chord; the two web members located over the main vertical pier body are arranged in the two branch inclined pier bodies respectively, and the two web members and the two branch inclined pier bodies are poured into a whole; the lower chord penetrates through the upper portion of the main vertical pier body, and the lower chord and the main vertical pier body are poured into a whole. The Y-shaped pier is simple in structure, reasonable in design, easy to construct and good in use effect, the truss girder is supported, and meanwhile bending resistant and torsion resistant rigidity of the truss girder can be effectively enhanced, and stability of the truss girder is greatly improved.
Description
Technical field
The present invention relates to a kind of bridge pier, especially relate to a kind of steel-pipe concrete truss Y shape bridge pier.
Background technology
At present, continuous rigid frame bridge is the bridge construction form of China's main flow, wherein based on prestressed concrete girder combined with steel reinforced concrete bridge pier structure form, but to there is dead load in prestressed concrete continuous rigid-framed bridge account for the features such as total load ratio is high, bearing capacity efficiency is low, form of structure is single, cyclic utilization rate is low.Along with the further increasing of bridge span, the ratio shared by mobile load internal force reduces, and difficulty of construction strengthens, and this and bridge are disagreed across light-duty development trend greatly.When same span same structure system, if adopt concrete filled steel tube space truss combined continuous rigid frame bridge, its supporting capacity utilization factor can enlarge markedly, and increases about 30% than prestressed concrete continuous rigid-framed bridge.Concrete filled steel tube space truss combined continuous rigid frame bridge is using main couple as main spandrel girder, and main couple is spliced primarily of concrete filled steel tube rod member, overall to be subject to curved and to be cut, every root rod member mainly bears axial force, its structure is slim and graceful, attractive in appearance, and span ability is large, and stress performance is excellent.The most normal different forms of main couple be plane frame, its material usage is relatively large, and frame system rod member is more.For the space truss beam that cross-sectional form is rectangle or little box, if base plate is removed, replace with single concrete filled steel tube lower chord, spatial triangle girder system is formed with diagonal web member and upper chord, deadweight can be alleviated further, save material, truss member supporting capacity utilization factor is improved further, also depth of section can be increased simultaneously, its entirety is made to have larger rigidity and span ability, but the defect existed is that the torsional rigidity of girder truss is lower, and thus torsion proof less stable, makes the application of above-mentioned truss form be subject to larger restriction.To sum up, nowadays simple, the reasonable in design and easy construction of a kind of structure, steel-pipe concrete truss Y shape bridge pier that result of use is good is lacked, while it supports girder truss, effectively can increase bending resistance and the torsional rigidity of girder truss, increase substantially the stability of girder truss, play the advantage of spatial triangle truss.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of steel-pipe concrete truss Y shape bridge pier is provided, its structure is simple, reasonable in design and easy construction, result of use are good, while girder truss is supported, effectively can increase bending resistance and the torsional rigidity of girder truss, increase substantially the stability of girder truss.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of steel-pipe concrete truss Y shape bridge pier, it is characterized in that: comprise the Y shape pier shaft that girder truss is supported, described Y shape pier shaft comprises vertical main pier shaft and two oblique branch pier shafts laid respectively at above the vertical main pier shaft left and right sides, and described vertical main pier shaft and two described oblique branch pier shafts are steel case concrete structure; Described girder truss comprises for being arranged the inverted triangular truss beam being supported in the web member described in lower chord and twice between upper chord respectively and forming by twice upper chord, one lower chord and left and right two, often arrange described web member and include the many web members laid from front to back, described upper chord and lower chord all in vertical bridge to laying, described in twice, upper chord symmetry is laid in the oblique upper, the left and right sides of described lower chord, and upper chord described in described lower chord and twice arranges described web member by two and connects as one; Described girder truss is positioned at vertical main pier shaft top, the described web member in two, left and right be positioned at directly over vertical main pier shaft is laid in two described oblique branch pier shafts respectively, the two described web members be positioned at directly over vertical main pier shaft be respectively the steel frame of two described oblique branch pier shafts and the two respectively with two described oblique branch pier shaft build and be integrated; Described lower chord from vertical main pier shaft top by and itself and vertical main pier shaft build and be integrated.
Above-mentioned a kind of steel-pipe concrete truss Y shape bridge pier, it is characterized in that: the symmetrical laying of two described oblique branch pier shafts, be positioned at two symmetrical layings of described web member directly over vertical main pier shaft, and the end face of the end face of two described web members oblique branch described with two pier shaft is respectively mutually concordant.
Above-mentioned a kind of steel-pipe concrete truss Y shape bridge pier, is characterized in that: described vertical main pier shaft comprises vertical steel case one, the multiple vertical stiffening rib be laid on vertical steel case one inside wall, be multiplely laid in the diaphragm one of vertical steel case one inside from the bottom to top and build the concrete structure one in vertical steel case one; Two described oblique branch pier shafts include oblique steel case two, the multiple longitudinal stiffeners be laid on oblique steel case two inside wall, multiple be laid in oblique steel case two inside from the bottom to top diaphragm two and by the concrete structure two of building in oblique steel case two; Before and after the top of described vertical steel case one, both sides all have the through hole passed through for lower chord.
Above-mentioned a kind of steel-pipe concrete truss Y shape bridge pier, is characterized in that: multiple described vertical stiffening rib is PBL stiffening rib and it is all vertical runs with the inside wall of institute installation position place vertical steel case one; Multiple described diaphragm one all in level to laying, the structure of multiple described diaphragm one and size all with internal construction and the consistent size of its installation position place vertical steel case one, the surrounding sidewall of multiple described diaphragm one is all weldingly fixed on the inside wall of vertical steel case one; The middle part of described diaphragm one has middle through-hole one, described diaphragm one has multiple respectively for the edges of boards tongue and groove one that multiple described vertical stiffening rib passes;
Multiple described longitudinal stiffener is PBL stiffening rib and it is all laid along the central axial direction of laid oblique steel case two, multiple described longitudinal stiffener all with the stiffener that the inside wall of institute installation position place vertical steel case one is vertical runs; Multiple described diaphragm two is all vertical runs with the inside wall of institute installation position place oblique steel case two; The structure of multiple described diaphragm two and size all with internal construction and the consistent size of its installation position place oblique steel case two, the surrounding sidewall of multiple described diaphragm two is all weldingly fixed on the inside wall of oblique steel case two; The middle part of described diaphragm two has middle through-hole two, described diaphragm two has multiple respectively for the edges of boards tongue and groove two that multiple described longitudinal stiffener passes.
Above-mentioned a kind of steel-pipe concrete truss Y shape bridge pier, is characterized in that: the cross section of described vertical steel case one and oblique steel case two is square.
Above-mentioned a kind of steel-pipe concrete truss Y shape bridge pier, is characterized in that: the two described web members be laid in two described oblique branch pier shafts are encased structures, and described lower chord is encased structures.
Above-mentioned a kind of steel-pipe concrete truss Y shape bridge pier, it is characterized in that: described lower chord comprises outer steel pipe one and builds the concrete structure three in described outer steel pipe one, the inside wall of described outer steel pipe one is laid with multiple tracks stiffening rib one, described in multiple tracks, stiffening rib one is PBL stiffening rib, on the inside wall that stiffening rib one described in multiple tracks is all weldingly fixed on described outer steel pipe one and its all lay along the central axial direction of described outer steel pipe one; The two described web members be laid in two described oblique branch pier shafts include outer steel pipe two and build the concrete structure four in described outer steel pipe two, the inside wall of described outer steel pipe two is laid with multiple tracks stiffening rib two, described in multiple tracks, stiffening rib two is PBL stiffening rib, on the inside wall that stiffening rib two described in multiple tracks is all weldingly fixed on described outer steel pipe two and its all lay along the central axial direction of described outer steel pipe two.
Above-mentioned a kind of steel-pipe concrete truss Y shape bridge pier, is characterized in that: the direction across bridge width of described vertical steel case one and oblique steel case two all reduces from the bottom to top gradually.
Above-mentioned a kind of steel-pipe concrete truss Y shape bridge pier, it is characterized in that: the bottom of described vertical main pier shaft is hollow steel case concrete structure, described hollow steel case concrete structure comprise vertical steel case one and coaxial package in vertical steel case one in steel case, described concrete structure one is for building the concrete structure between vertical steel case one and described interior steel case, multiple described diaphragm one is all laid in described interior steel case and its surrounding sidewall is all weldingly fixed on the inside wall of described interior steel case, the physical dimension of described diaphragm one all with internal construction and the consistent size of described interior steel case.
Above-mentioned a kind of steel-pipe concrete truss Y shape bridge pier, it is characterized in that: also comprise and Y shape pier shaft is supported and the horizontal cushion cap be positioned at below Y shape pier shaft and multiple vertical pillar be supported on respectively below horizontal cushion cap, described horizontal cushion cap and multiple described vertical pillar are reinforced concrete structure, and described horizontal cushion cap and multiple described vertical pillar are built and be integrated; Described Y shape pier shaft and horizontal cushion cap are built and are integrated.
The present invention compared with prior art has the following advantages:
1, structure is simple, reasonable in design and construction cost is lower.
2, adopt tapered pier, sectional dimension diminishes to Dun Ding gradually by the bottom of pier, and the quantity of corresponding stiffening rib from top to bottom reduces gradually according to force request; Bridge pier is reaching girder truss lower edge At The Height, the lower chord entirety of del Steel Truss Beam is passed and is erected on bridge pier, and bridge pier bifurcated herein, the double steel frame doing the oblique bifurcated pier shaft of bridge pier of the web member of Steel Truss Beam, the bifurcation angle of bridge pier adapts with girder truss with height, makes bridge pier and steel-pipe concrete truss be combined into firm structure system.Adopt perforate stiffening rib (i.e. PBL stiffening rib) effectively can strengthen the lateral stability of outer steel pipe, and corresponding significantly enhancing structure shear resistance, each ingredient of whole encased structures is closely linked to be entirety simultaneously.Set perforate stiffening rib not only increases the compressive strength of core concrete, strengthens the stability of tube wall; The stiffening rib of perforate simultaneously act as the effect of shear key, makes steel pipe and concrete be linked to be entirety, improves the compound action of Steel concrete.
3, the good and good mechanical performance of easy construction, result of use, while supporting, effectively can increase bending resistance and the torsional rigidity of girder truss, increased substantially the stability of girder truss, played the advantage of spatial triangle truss girder truss.
In sum, structure of the present invention is simple, reasonable in design and easy construction, result of use are good, while supporting, effectively can increase bending resistance and the torsional rigidity of girder truss, increased substantially the stability of girder truss to girder truss.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of Y shape pier shaft of the present invention.
Fig. 3 is the A-A sectional view in Fig. 2.
Fig. 4 is the B-B sectional view in Fig. 2.
Fig. 5 is the C-C sectional view in Fig. 2.
Fig. 6 is the D-D sectional view in Fig. 2.
Description of reference numerals:
1-1-upper chord; 1-2-lower chord; 1-3-web member;
2-Y shape pier shaft; 2-1-vertical main pier shaft; 2-2-oblique branch pier shaft;
2-3-vertical stiffening rib; 2-4-diaphragm one; 2-5-vertical steel case one;
2-6-middle through-hole one; 2-7-edges of boards tongue and groove one; 2-8-oblique steel case two;
2-9-longitudinal stiffener; 2-10-diaphragm two; 2-11-middle through-hole two;
2-12-edges of boards tongue and groove two; 3-horizontal cushion cap; 4-vertical pillar;
5-1-concrete structure one; 5-2-concrete structure two; 6-bridge deck.
Detailed description of the invention
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the present invention includes the Y shape pier shaft 2 that girder truss is supported, described Y shape pier shaft 2 comprises vertical main pier shaft 2-1 and two and lays respectively at oblique branch pier shaft 2-2 above the vertical main pier shaft 2-1 left and right sides, and described vertical main pier shaft 2-1 and two described oblique branch pier shaft 2-2 is steel case concrete structure.Described girder truss comprises for being arranged the inverted triangular truss beam being supported in the web member 1-3 described in lower chord 1-2 and twice between upper chord 1-1 respectively and forming by twice upper chord 1-1, one lower chord 1-2 and left and right two, often arrange described web member 1-3 and include the many web member 1-3 laid from front to back, described upper chord 1-1 and lower chord 1-2 all in vertical bridge to laying, described in twice, upper chord 1-1 symmetry is laid in the oblique upper, the left and right sides of described lower chord 1-2, and upper chord 1-1 described in described lower chord 1-2 and twice arranges described web member 1-3 by two and connects as one.Described girder truss is positioned at vertical main pier shaft 2-1 top, the described web member 1-3 in two, left and right be positioned at directly over vertical main pier shaft 2-1 is laid in two described oblique branch pier shaft 2-2 respectively, and the two described web member 1-3 be positioned at directly over vertical main pier shaft 2-1 are respectively the steel frame of two described oblique branch pier shaft 2-2 and the two is respectively with two that described oblique branch pier shaft 2-2 builds and is integrated.Described lower chord 1-2 from vertical main pier shaft 2-1 top by and itself and vertical main pier shaft 2-1 build and be integrated.
In the present embodiment, the symmetrical laying of two described oblique branch pier shaft 2-2, be positioned at the symmetrical laying of two described web member 1-3 directly over vertical main pier shaft 2-1, and the end face of the end face of two described web member 1-3 oblique branch pier shaft 2-2 described with two is respectively mutually concordant.
During practice of construction, described in twice, upper chord 1-1 is all laid on same plane, the transverse connection that upper chord 1-1 described in twice is direction across bridge laying by multiple tracks connects as one and forms the upper beam string structure of described girder truss, and bridge deck 6 are equipped with on described upper beam string structure upper berth.
In the present embodiment, described vertical main pier shaft 2-1 comprises vertical steel case one 2-5, the multiple vertical stiffening rib 2-3 be laid on vertical steel case one 2-5 inside wall, be multiplely laid in diaphragm one 2-4 of vertical steel case one 2-5 inside from the bottom to top and build concrete structure one 5-1 in vertical steel case one 2-5.Two described oblique branch pier shaft 2-2 include oblique steel case two 2-8, the multiple longitudinal stiffener 2-9 be laid on oblique steel case two 2-8 inside wall, multiple be laid in oblique steel case two 2-8 inside from the bottom to top diaphragm two 2-10 and by building concrete structure two 5-2 in oblique steel case two 2-8.Before and after the top of described vertical steel case one 2-5, both sides all have the through hole passed through for lower chord 1-2.
In the present embodiment, described vertical main pier shaft 2-1 is that PBL puts more energy into shape steel tube concrete structure.Multiple described vertical stiffening rib 2-3 is PBL stiffening rib and it is all vertical runs with the inside wall of installation position place of institute vertical steel case one 2-5.Multiple described diaphragm one 2-4 all in level to laying, the structure of multiple described diaphragm one 2-4 and size all with internal construction and the consistent size of its installation position place vertical steel case one 2-5, the surrounding sidewall of multiple described diaphragm one 2-4 is all weldingly fixed on the inside wall of vertical steel case one 2-5; The middle part of described diaphragm one 2-4 has middle through-hole one 2-6, described diaphragm one 2-4 has multiple respectively for edges of boards tongue and groove one 2-7 that multiple described vertical stiffening rib 2-3 passes.
In the present embodiment, described oblique branch pier shaft 2-2 is that PBL puts more energy into shape steel tube concrete structure.Multiple described longitudinal stiffener 2-9 is PBL stiffening rib and it is all laid along the central axial direction of laid oblique steel case two 2-8, multiple described longitudinal stiffener 2-9 all with the stiffener that the inside wall of installation position place of institute vertical steel case one 2-5 is vertical runs.Multiple described diaphragm two 2-10 is all vertical runs with the inside wall of installation position place of institute oblique steel case two 2-8.The structure of multiple described diaphragm two 2-10 and size all with internal construction and the consistent size of its installation position place oblique steel case two 2-8, the surrounding sidewall of multiple described diaphragm two 2-10 is all weldingly fixed on the inside wall of oblique steel case two 2-8.The middle part of described diaphragm two 2-10 has middle through-hole two 2-11, described diaphragm two 2-10 has multiple respectively for edges of boards tongue and groove two 2-12 that multiple described longitudinal stiffener 2-9 passes.
During practice of construction, the cross section of described vertical steel case one 2-5 and oblique steel case two 2-8 is square.In the present embodiment, the cross section of described vertical steel case one 2-5 and oblique steel case two 2-8 is rectangle.
Actually add man-hour, the wall thickness of described vertical steel case one 2-5 and oblique steel case two 2-8 is 8mm ~ 20mm, and can adjust accordingly according to the wall thickness of the force request of bridge pier to vertical steel case one 2-5 and oblique steel case two 2-8.Spacing between neighbouring two described diaphragm one 2-4 is about 2m.
In the present embodiment, the concrete of building in described vertical steel case one 2-5 and oblique steel case two 2-8 is self-compacting concrete.
During practice of construction, the two described web member 1-3 be laid in two described oblique branch pier shaft 2-2 are encased structures, and described lower chord 1-2 is encased structures.
In the present embodiment, described lower chord 1-2 and the two described web member 1-3 be laid in two described oblique branch pier shaft 2-2 are PBL and put more energy into shape steel tube concrete structure.Described lower chord 1-2 comprises outer steel pipe one and builds the concrete structure three in described outer steel pipe one, the inside wall of described outer steel pipe one is laid with multiple tracks stiffening rib one, described in multiple tracks, stiffening rib one is PBL stiffening rib, on the inside wall that stiffening rib one described in multiple tracks is all weldingly fixed on described outer steel pipe one and its all lay along the central axial direction of described outer steel pipe one.The two described web member 1-3 be laid in two described oblique branch pier shaft 2-2 include outer steel pipe two and build the concrete structure four in described outer steel pipe two, the inside wall of described outer steel pipe two is laid with multiple tracks stiffening rib two, described in multiple tracks, stiffening rib two is PBL stiffening rib, on the inside wall that stiffening rib two described in multiple tracks is all weldingly fixed on described outer steel pipe two and its all lay along the central axial direction of described outer steel pipe two.
In the present embodiment, described outer steel pipe one and described outer steel pipe two are rectangular steel pipe.During practice of construction, described outer steel pipe one and described outer steel pipe two also can adopt round steel pipe or cross section to be foursquare steel pipe.
Described PBL stiffening rib is perforate stiffening rib, and described perforate stiffening rib is the floor of putting more energy into that top has multiple hole, and the length direction of floor of putting more energy into described in multiple described hole edge is laid from front to back.In the present embodiment, described in floor of putting more energy into be stripe board.
In the present embodiment, the direction across bridge width of described vertical steel case one 2-5 and oblique steel case two 2-8 all reduces from the bottom to top gradually, and the vertical bridge of the two remains unchanged to width.
During practice of construction, when span of bridge is comparatively large and pier section size is larger, the bottom of described vertical main pier shaft 2-1 is hollow steel case concrete structure.Described hollow steel case concrete structure comprise vertical steel case one 2-5 and coaxial package in vertical steel case one 2-5 in steel case, described concrete structure one 5-1 builds the concrete structure between vertical steel case one 2-5 and described interior steel case, multiple described diaphragm one 2-4 is all laid in described interior steel case and its surrounding sidewall is all weldingly fixed on the inside wall of described interior steel case, the physical dimension of described diaphragm one 2-4 all with internal construction and the consistent size of described interior steel case.Multiple described vertical stiffening rib 2-3 is all laid on the inside wall of vertical steel case one 2-5.Such as, when the cross sectional dimensions of described vertical main pier shaft 2-1 is greater than 4m2, the bottom of described vertical main pier shaft 2-1 is hollow steel case concrete structure.
Simultaneously, the present invention also comprises and supporting and the horizontal cushion cap 3 be positioned at below Y shape pier shaft 2 and multiple vertical pillar 4 be supported on respectively below horizontal cushion cap 3 Y shape pier shaft 2, described horizontal cushion cap 3 and multiple described vertical pillar 4 are reinforced concrete structure, and described horizontal cushion cap 3 and multiple described vertical pillar 4 are built and be integrated; Described Y shape pier shaft 2 is built with horizontal cushion cap 3 and is integrated.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solution of the present invention.
Claims (10)
1. a steel-pipe concrete truss Y shape bridge pier, it is characterized in that: comprise the Y shape pier shaft (2) that girder truss is supported, described Y shape pier shaft (2) comprises vertical main pier shaft (2-1) and two oblique branches pier shaft (2-2) laid respectively at above vertical main pier shaft (2-1) left and right sides, and described vertical main pier shaft (2-1) and two described oblique branches pier shaft (2-2) are steel case concrete structure, described girder truss is by twice upper chord (1-1), one lower chord (1-2) and left and right two arrange the inverted triangular truss beam being supported in the web member (1-3) described in lower chord (1-2) and twice between upper chord (1-1) respectively and forming, often arrange described web member (1-3) and include the many web members (1-3) laid from front to back, described upper chord (1-1) and lower chord (1-2) all in vertical bridge to laying, upper chord described in twice (1-1) symmetry is laid in the oblique upper, the left and right sides of described lower chord (1-2), described lower chord (1-2) arranges described web member (1-3) with upper chord (1-1) described in twice by two and connects as one, described girder truss is positioned at vertical main pier shaft (2-1) top, two, the left and right described web member (1-3) be positioned at directly over vertical main pier shaft (2-1) is laid in two described oblique branches pier shaft (2-2) respectively, the two described web members (1-3) be positioned at directly over vertical main pier shaft (2-1) be respectively the steel frame of two described oblique branches pier shaft (2-2) and the two respectively with two described oblique branch pier shaft (2-2) build and be integrated, described lower chord (1-2) from vertical main pier shaft (2-1) top by and itself and vertical main pier shaft (2-1) build and be integrated.
2. according to a kind of steel-pipe concrete truss Y shape bridge pier according to claim 1, it is characterized in that: pier shaft (2-2) the symmetrical laying of two described oblique branches, be positioned at the symmetrical laying of two described web members (1-3) directly over vertical main pier shaft (2-1), and the end face of the end face of two described web members (1-3) oblique branch pier shaft (2-2) described with two is respectively mutually concordant.
3. according to a kind of steel-pipe concrete truss Y shape bridge pier described in claim 1 or 2, it is characterized in that: described vertical main pier shaft (2-1) comprises vertical steel case one (2-5), the multiple vertical stiffening rib (2-3) be laid on vertical steel case one (2-5) inside wall, be multiplely laid in the inner diaphragm one (2-4) of vertical steel case one (2-5) from the bottom to top and build the concrete structure one (5-1) in vertical steel case one (2-5); Two described oblique branches pier shaft (2-2) include oblique steel case two (2-8), the multiple longitudinal stiffeners (2-9) be laid on oblique steel case two (2-8) inside wall, be multiplely laid in the inner diaphragm two (2-10) of oblique steel case two (2-8) from the bottom to top and build the concrete structure two (5-2) in oblique steel case two (2-8); Before and after the top of described vertical steel case one (2-5), both sides all have the through hole passed through for lower chord (1-2).
4. according to a kind of steel-pipe concrete truss Y shape bridge pier according to claim 3, it is characterized in that: multiple described vertical stiffening rib (2-3) is PBL stiffening rib and it is all vertical runs with the inside wall of institute's installation position place vertical steel case one (2-5); Multiple described diaphragm one (2-4) all in level to laying, the structure of multiple described diaphragm one (2-4) and size all with internal construction and the consistent size of its installation position place vertical steel case one (2-5), the surrounding sidewall of multiple described diaphragm one (2-4) is all weldingly fixed on the inside wall of vertical steel case one (2-5); The middle part of described diaphragm one (2-4) has middle through-hole one (2-6), described diaphragm one (2-4) has multiple edges of boards tongue and groove one (2-7) supplying multiple described vertical stiffening rib (2-3) to pass respectively;
Multiple described longitudinal stiffener (2-9) is PBL stiffening rib and it is all laid along the central axial direction of laid oblique steel case two (2-8), and it is the stiffener of vertical runs that multiple described longitudinal stiffener (2-9) is with the inside wall of institute's installation position place oblique steel case two (2-8); Multiple described diaphragm two (2-10) is all vertical runs with the inside wall of institute's installation position place oblique steel case two (2-8); The structure of multiple described diaphragm two (2-10) and size all with internal construction and the consistent size of its installation position place oblique steel case two (2-8), the surrounding sidewall of multiple described diaphragm two (2-10) is all weldingly fixed on the inside wall of oblique steel case two (2-8); The middle part of described diaphragm two (2-10) has middle through-hole two (2-11), described diaphragm two (2-10) has multiple edges of boards tongue and groove two (2-12) supplying multiple described longitudinal stiffener (2-9) to pass respectively.
5. according to a kind of steel-pipe concrete truss Y shape bridge pier according to claim 3, it is characterized in that: the cross section of described vertical steel case one (2-5) and oblique steel case two (2-8) is square.
6. according to a kind of steel-pipe concrete truss Y shape bridge pier described in claim 1 or 2, it is characterized in that: the two described web members (1-3) be laid in two described oblique branches pier shaft (2-2) are encased structures, and described lower chord (1-2) is encased structures.
7. according to a kind of steel-pipe concrete truss Y shape bridge pier according to claim 6, it is characterized in that: described lower chord (1-2) comprises outer steel pipe one and builds the concrete structure three in described outer steel pipe one, the inside wall of described outer steel pipe one is laid with multiple tracks stiffening rib one, described in multiple tracks, stiffening rib one is PBL stiffening rib, on the inside wall that stiffening rib one described in multiple tracks is all weldingly fixed on described outer steel pipe one and its all lay along the central axial direction of described outer steel pipe one; The two described web members (1-3) be laid in two described oblique branches pier shaft (2-2) include outer steel pipe two and build the concrete structure four in described outer steel pipe two, the inside wall of described outer steel pipe two is laid with multiple tracks stiffening rib two, described in multiple tracks, stiffening rib two is PBL stiffening rib, on the inside wall that stiffening rib two described in multiple tracks is all weldingly fixed on described outer steel pipe two and its all lay along the central axial direction of described outer steel pipe two.
8. according to a kind of steel-pipe concrete truss Y shape bridge pier according to claim 3, it is characterized in that: the direction across bridge width of described vertical steel case one (2-5) and oblique steel case two (2-8) all reduces from the bottom to top gradually.
9. according to a kind of steel-pipe concrete truss Y shape bridge pier according to claim 3, it is characterized in that: the bottom of described vertical main pier shaft (2-1) is hollow steel case concrete structure, described hollow steel case concrete structure comprises vertical steel case one (2-5) and the interior steel case of coaxial package in vertical steel case one (2-5), described concrete structure one (5-1) is for building the concrete structure between vertical steel case one (2-5) and described interior steel case, multiple described diaphragm one (2-4) is all laid in described interior steel case and its surrounding sidewall is all weldingly fixed on the inside wall of described interior steel case, the structure of described diaphragm one (2-4) and size all with internal construction and the consistent size of described interior steel case.
10. according to a kind of steel-pipe concrete truss Y shape bridge pier described in claim 1 or 2, it is characterized in that: also comprise and Y shape pier shaft (2) is supported and the horizontal cushion cap (3) be positioned at below Y shape pier shaft (2) and multiple vertical pillar (4) being supported on horizontal cushion cap (3) below respectively, described horizontal cushion cap (3) and multiple described vertical pillar (4) are reinforced concrete structure, and described horizontal cushion cap (3) and multiple described vertical pillar (4) are built and be integrated; Described Y shape pier shaft (2) and horizontal cushion cap (3) are built and are integrated.
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| CN201310745942.8A CN103669201B (en) | 2013-12-29 | 2013-12-29 | Y-shaped pier used for steel pipe concrete truss girder |
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| CN201310745942.8A CN103669201B (en) | 2013-12-29 | 2013-12-29 | Y-shaped pier used for steel pipe concrete truss girder |
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| CN110258918B (en) * | 2019-06-26 | 2021-10-22 | 浙江精工钢结构集团有限公司 | Y-shaped variable cross-section bending box type truss structure and manufacturing method thereof |
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| JP2000170323A (en) * | 1998-12-07 | 2000-06-20 | Kajima Corp | Truss and brace structure material |
| CN1483896A (en) * | 2003-07-22 | 2004-03-24 | 上海市政工程设计研究院 | Overhead bridge interval structure for track traffic |
| CN101074553A (en) * | 2007-06-15 | 2007-11-21 | 四川省交通厅公路规划勘察设计研究院 | Medium-spanning steel-pipe concrete truss bridge |
| CN202530364U (en) * | 2012-03-12 | 2012-11-14 | 北京市市政工程设计研究总院 | Inverted triangle pier simply supported or continuous bridge structure |
| CN203639807U (en) * | 2013-12-29 | 2014-06-11 | 长安大学 | Y-shaped pier for concrete filled steel tube truss beam |
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- 2013-12-29 CN CN201310745942.8A patent/CN103669201B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000170323A (en) * | 1998-12-07 | 2000-06-20 | Kajima Corp | Truss and brace structure material |
| CN1483896A (en) * | 2003-07-22 | 2004-03-24 | 上海市政工程设计研究院 | Overhead bridge interval structure for track traffic |
| CN101074553A (en) * | 2007-06-15 | 2007-11-21 | 四川省交通厅公路规划勘察设计研究院 | Medium-spanning steel-pipe concrete truss bridge |
| CN202530364U (en) * | 2012-03-12 | 2012-11-14 | 北京市市政工程设计研究总院 | Inverted triangle pier simply supported or continuous bridge structure |
| CN203639807U (en) * | 2013-12-29 | 2014-06-11 | 长安大学 | Y-shaped pier for concrete filled steel tube truss beam |
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| CN103669201A (en) | 2014-03-26 |
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