CN208869929U - A kind of concrete box girder direction across bridge prestressed structure - Google Patents

Abstract

The utility model discloses a kind of concrete box girder direction across bridge prestressed structures, including box beam pedestal, the box beam base bottom is equipped with kerve, and the left and right sides inside kerve is symmetrically arranged with first clamping plate, and the top of first clamping plate is equipped with conversion sleeve, and the left and right ends of conversion sleeve are mounted on the first anchor pole, the left and right sides inside the conversion sleeve is symmetrically arranged with jack.The concrete box girder direction across bridge prestressed structure, pass through conversion sleeve, first clamping plate, cooperation between second clamping plate and plug, under the action of snap-gauge, conversion sleeve, first clamping plate and second clamping plate have carried out tensioning to the level of box beam pedestal, and then improve the horizontal prestressing force of box beam pedestal, under the action of longitudinal reinforcement and pull rod, longitudinal direction and vertical direction to box beam pedestal and column have carried out tensioning, and then improve the overall stability of box beam pedestal and column, it avoids bursting apart between box beam pedestal and column and inclined crack point problem occurs, it is suitble to promote the use of.

Description

A kind of concrete box girder direction across bridge prestressed structure

Technical field

The utility model relates to build prestressing technique field, specially a kind of concrete box girder direction across bridge prestressing force knot Structure.

Background technique

To reduce the principal tensile stress of box beam when currently, large span prestressed concrete box girder bridge is in design, and reach simultaneously To the effect for improving box beam entirety cracking resistance, the method generallyd use is configuration direction across bridge prestressed strand, traditional box beam Direction across bridge prestressing force arrangement form mainly uses fining twisted steel or steel strand wires for prestressed material, in the abdomen of concrete box girder Plate and top plate arrange straight-line prestressed steel beam, and there are some problems, first abdomen for this traditional direction across bridge prestressing force arrangement The vertical prestressing steel Shu Changdu arranged in plate limited by deck-molding, and when box beam height is smaller, anchorage bounces back meeting so that steel beam Loss of prestress is relatively large, and effective prestress reduces more cracking resistance raising so as to cause prestressing force effect to web Less, secondly because vertical prestressing upper end is stretching end in web, lower end is anchored end, between the anchored end and beam bottom of lower end Concrete thickness it is little, it is excessive to will appear local tensile stress for anchored end lower concrete after prestressing force carries out one-end tension, So that there is tearing risk in the concrete of web lower edge, there are also in curved beam bridges, due to the effect of torque can make bottom plate there is also Shear stress, and this kind of transverse prestress arrangement due to the limitation that is difficult to open on web stretching notch etc. structurally and can not Arrange transverse prestress in the soleplate, the box beam bottom plate of no transverse prestress effect is compared to being applied with transverse prestress effect The risk of top plate and web, concrete cracking dramatically increases, and in the prior art, such as application No. is 201621419852.5 Utility model patent includes non-bending steel cable prestressed strand, C-shaped corner steel, U-shaped is anti-collapses reinforcing bar, anchorage and anchor plate, in advance Stress rib uses non-bending steel cable prestressed strand, determines non-bending steel cable prestressed strand according to structure design requirement Quantity is glued with C-shaped corner steel at the angle change of non-bending steel cable prestressed strand, is used to support non-bending steel cable The crank degree of prestressed strand, C-shaped corner steel determines that width is according to non-bending steel cable according to the angle between web and bottom plate The quantity of prestressed strand determines that U-shaped is anti-to collapse reinforcement welding on C-shaped corner steel, non-bending steel cable prestressed strand both ends Across anchor plate, anchorage is anchored on anchor plate after clamping non-bending steel cable prestressed strand, although the utility model structure Simply, but there are many deficiencies and defect, in existing equipment, the design existing defects of C-shaped corner steel, in use, C-shaped turns The bottom of angle steel not can overcome the disadvantages that horizontal and vertical prestressed reduction, only be made up to vertical prestressing, not being able to satisfy makes With requiring, bottom still remains the problem of bursting apart, and there are security risks, in view of these situations, to avoid above-mentioned technical problem, really It is necessary to provide a kind of concrete box girder direction across bridge prestressed structures to overcome the defect in the prior art.

Utility model content

The purpose of this utility model is to provide a kind of concrete box girder direction across bridge prestressed structures, to solve above-mentioned background The problem of being proposed in technology.

To achieve the above object, the utility model provides the following technical solutions: a kind of concrete box girder direction across bridge prestressing force Structure, including box beam pedestal, the box beam base bottom is equipped with kerve, and the left and right sides inside kerve is symmetrically arranged with the first folder Plate, and the top of first clamping plate is equipped with conversion sleeve, and the left and right ends of conversion sleeve are mounted on the first anchor pole, in the conversion sleeve Jack is symmetrically arranged at left and right sides of portion, and the inside of jack is equipped with longitudinal reinforcement, and longitudinal reinforcement is connected with jack grafting, institute The top for stating the first anchor pole is connected with second clamping plate, and the first anchor pole sequentially passes through second clamping plate, conversion sleeve and first clamping plate, institute The top for stating second clamping plate is equipped with dead ring, and the left and right sides of dead ring is equipped with groove, and the inside of groove is equipped with snap-gauge, And the inside of snap-gauge is equipped with anchor bolt, and snap-gauge is connected by anchor bolt with groove, the left and right sides inside the dead ring is symmetrical Equipped with the second anchor pole, and snap-gauge is fixedly connected by the second anchor pole with dead ring, cross bar is equipped between second anchor pole, and horizontal Bar is annular, and the top of the box beam pedestal is equipped with column, and the inside of column is equipped with pull rod, and pull rod through conversion sleeve and with The bottom of conversion sleeve is clamped, and the column is fixedly connected by pull rod with box beam pedestal, the friendship of the dead ring and the second anchor pole It meets place and is equipped with rubber mat, and rubber mat is annular, the inside of the box beam pedestal is equipped with rod set, and pull rod passes through rod set and conversion sleeve It is fixedly connected.

Preferably, the outer cover of the rod set is equipped with lateral steel plate, and the inside of lateral steel plate is equipped with circular groove, and circular groove Inside is equipped with kelly, and the outer cover of kelly is equipped with the first card, and the top of the first card is equipped with the second card, and the second card The right side of piece is equipped with third anchor pole, and the second card is connect by third anchor pole with lateral Interal fixation, and kelly passes through second Card and the first card activity are clamped, and box beam pedestal is connect by kelly with lateral Interal fixation.

Preferably, the end of the first clamping plate and second clamping plate is equipped with plug, and the activity of plug and longitudinal reinforcement Clamping, and plug is used to carry out longitudinally fixed, the longitudinal prestressing of lift tank beam bottom seat to longitudinal reinforcement.

Preferably, the bottom end of the pull rod is equipped with the second grab, and the second grab and conversion sleeve activity are clamped, and the second card Hook promotes the prestressing force between column and box beam pedestal for mutually linking with conversion sleeve.

Preferably, the left and right ends of the cross bar are symmetrically arranged with the first grab, and the first grab and the second anchor pole active card It connects, and the first grab is used to connect the horizontal prestressing force of the second anchor pole lift tank beam bottom seat, and box beam pedestal is avoided to burst apart.

Compared with prior art, the utility model has the beneficial effects that the concrete box girder direction across bridge prestressed structure, leads to The cooperation between conversion sleeve, first clamping plate, second clamping plate and plug is crossed, under the action of snap-gauge, conversion sleeve, first clamping plate and Second splint has carried out tensioning to the level of box beam pedestal, and then improves the horizontal prestressing force of box beam pedestal, in longitudinal reinforcement and Under the action of pull rod, longitudinal direction and vertical direction to box beam pedestal and column have carried out tensioning, so improve box beam pedestal and The overall stability of column avoids bursting apart between box beam pedestal and column and inclined crack point problem occurs, to overcome Conventional concrete box beam direction across bridge prestressed structure is not in use, the bottom of C-shaped corner steel can overcome the disadvantages that horizontal and vertical pre- answer The reduction of power, only makes up vertical prestressing, is not able to satisfy requirement, and bottom still remains the problem of bursting apart, and exists The shortcomings that security risk, overcomes existing concrete box girder direction across bridge prestressed structure by C-shaped corner steel and U-shaped anti-collapses steel Muscle carries out promoting the prestressed adjusting processing of box beam cross-bridges, and the single disadvantage of utility function improves the concrete box girder cross-bridges To the working efficiency and service life of prestressed structure, avoid in use, the bottom of C-shaped corner steel not can overcome the disadvantages that it is lateral and vertical To prestressed reduction, only vertical prestressing is made up, is not able to satisfy requirement, bottom still remains asking of bursting apart The shortcomings that topic, there are security risks, also allow existing concrete box girder direction across bridge prestressed structure that can be commercially available more More approvals improves the product quality of the concrete box girder direction across bridge prestressed structure, saves the purchase cost of user, The wasting of resources of concrete box girder direction across bridge prestressed structure is avoided, is suitble to promote the use of.

Detailed description of the invention

Fig. 1 is the annexation figure of box beam pedestal, column and kerve；

Fig. 2 is the annexation figure of the second anchor pole of Fig. 1, cross bar and the first grab；

Fig. 3 is the annexation figure of the first card of Fig. 1, kelly and the second card.

In figure: 1, box beam pedestal, 2, column, 3, kerve, 4, groove, 5, anchor bolt, 6, snap-gauge, 7, dead ring, the 8, first anchor Bar, 9, conversion sleeve, 10, jack, 11, plug, 12, longitudinal reinforcement, 13, first clamping plate, 14, second clamping plate, the 15, second anchor pole, 16, cross bar, the 17, first grab, 18, rubber mat, 19, rod set, 20, pull rod, the 21, second grab, 22, lateral steel plate, 23, circular groove, 24, the first card, 25, kelly, the 26, second card, 27, third anchor pole.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1-3 is please referred to, the utility model provides a kind of technical solution: a kind of concrete box girder direction across bridge prestressing force knot Structure, including box beam pedestal 1 play the role of main support as the stub of concrete box girder cross-bridges, and 1 bottom of box beam pedestal is equipped with Kerve 3, fixed first clamping plate 13 and second clamping plate 14, and the left and right sides inside kerve 3 is symmetrically arranged with first clamping plate 13, with Second clamping plate 14 cooperates, and longitudinal reinforcement 12 is fixed, the horizontal prestressing force of lift tank beam bottom seat 1, first clamping plate 13 Be equipped with plug 11 with the end of second clamping plate 14, and the activity of plug 11 and longitudinal reinforcement 12 is clamped, and plug 11 for pair Longitudinal reinforcement 12 carries out longitudinally fixed, the longitudinal prestressing of lift tank beam bottom seat 1, and the top of first clamping plate 13 is equipped with conversion sleeve 9, it is connected with each other with pull rod 20, promotes the vertical direction prestressing force of column 2 and box beam pedestal 1, and the left and right ends of conversion sleeve 9 are equal First anchor pole 8 is installed, conversion sleeve 9 and first clamping plate 13 are fixed, the left and right sides inside conversion sleeve 9 is symmetrically arranged with slotting Hole 10, fixed longitudinal reinforcement 12, and the inside of jack 10 is equipped with longitudinal reinforcement 12, and longitudinal reinforcement 12 and 10 grafting phase of jack Even, longitudinal reinforcement 12 is used for the prestressing force of 1 bottom longitudinal direction of lift tank beam bottom seat, and the top of the first anchor pole 8 is connected with second clamping plate 14, longitudinal reinforcement 12 is fixed in cooperation first clamping plate 13, and the first anchor pole 8 sequentially passes through second clamping plate 14, conversion sleeve 9 With first clamping plate 13, the top of second clamping plate 14 is equipped with dead ring 7, connects the second anchor pole 15, by snap-gauge 6 and box beam pedestal 1 into Row is connected and fixed, the horizontal prestressing force of lift tank beam bottom seat 1, and the left and right sides of dead ring 7 is equipped with groove 4, installs anchor bolt 5 Snap-gauge 6 is fixed, and the inside of groove 4 is equipped with snap-gauge 6, the horizontal prestressing force of lift tank beam bottom seat 1, when box beam bottom When seat 1 is by cross shear, snap-gauge 6 can make up prestressed reduction, and block to the left and right sides tensioning of box beam pedestal 1 The inside of plate 6 is equipped with anchor bolt 5, and snap-gauge 6 is connected by anchor bolt 5 with groove 4, and the left and right sides inside dead ring 7 is symmetrically set There are the second anchor pole 15, connection snap-gauge 6, cross bar 16 and dead ring 7, and snap-gauge 6 to pass through the second anchor pole 15 and the fixed company of dead ring 7 It connects, cross bar 16 is equipped between the second anchor pole 15, the second anchor pole 15 is fixed, avoid the second anchor pole 15 to when the tensioning of two sides, Prestressing force reduces, and causes connected pedestal 1 to burst apart, the left and right ends of cross bar 16 are symmetrically arranged with the first grab 17, and the first grab 17 It is clamped with 15 activity of the second anchor pole, and the first grab 17 is used to connect the horizontal prestressing force of 15 lift tank beam bottom seat 1 of the second anchor pole, Box beam pedestal 1 is avoided to burst apart, and cross bar 16 is annular, the top of box beam pedestal 1 is equipped with column 2, and the inside of column 2 Equipped with pull rod 20, the bottom end of pull rod 20 is equipped with the second grab 21, and the second grab 21 is clamped with 9 activity of conversion sleeve, and the second card Hook 21 promotes the prestressing force between column 2 and box beam pedestal 1, and pull rod 20 runs through conversion sleeve for mutually linking with conversion sleeve 9 It 9 and is clamped with the bottom of conversion sleeve 9, column 2 is fixedly connected by pull rod 20 with box beam pedestal 1, dead ring 7 and the second anchor pole 15 Junction be equipped with rubber mat 18, and rubber mat 18 be annular, rubber mat 18 be elastic component, can with dead ring 7 with the left and right sides Tensioning and stretch, make up the reduced prestressing force of dead ring 7, the inside of box beam pedestal 1 is equipped with rod set 19, connects to pull rod 20 Fixation is connect, the outer cover of rod set 19 is equipped with lateral steel plate 22, the transverse prestress of lift tank beam bottom seat 1, and lateral steel plate 22 Inside is equipped with circular groove 23, and fixed kelly 25 makes lateral steel plate 22 be fixed on the inside of box beam pedestal 1, and circular groove 23 by kelly 25 Inside be equipped with kelly 25, lateral steel plate 22 is fixed, and the outer cover of kelly 25 be equipped with the first card 24, to kelly 25 It is fixed, so that kelly 25 is fixed on the inside of circular groove 23, and the top of the first card 24 is equipped with the second card 26, to kelly 25 Conscientious fixation, in order to avoid kelly 25 falls off from the inside of circular groove 23, and the right side of the second card 26 is equipped with third anchor pole 27, to second Card 26 is fixed, and promotes the stability between lateral steel plate 22 and box beam pedestal 1, and the second card 26 passes through third Anchor pole 27 is fixedly connected with lateral steel plate 22, and kelly 25 is clamped by the second card 26 and 24 activity of the first card, and box beam Pedestal 1 is fixedly connected by kelly 25 with lateral steel plate 22, and pull rod 20 is fixedly connected by rod set 19 with conversion sleeve 9, and cross is made To stronger between steel plate 22 and box beam pedestal 1.

A kind of concrete box girder direction across bridge prestressed structure, the concrete box girder direction across bridge prestressed structure is by box beam pedestal 1, column 2, kerve 3, groove 4, anchor bolt 5, snap-gauge 6, fixed ring 7, the first anchor pole 8, conversion sleeve 9, jack 10, plug 11, longitudinal direction Reinforcing bar 12, first clamping plate 13, second clamping plate 14, the second anchor pole 15, cross bar 16, the first grab 17, rubber mat 18, rod set 19, pull rod 20, the components composition such as the second grab 21 and lateral steel plate 22, the main fit dimension of reply components before assembling, especially It is full of fit dimension and phase closing precision is checked, when Same Part is fastened with more than one piece screw (bolt), each screw (bolt) needs to hand over Fork symmetrically, gradually, is uniformly tightened, and box beam pedestal 1 is concreting part, before pouring, by first clamping plate 13 and second clamping plate 14 It is fixed on the inside of box beam pedestal 1, conversion sleeve 9 is fixed in the kerve 3 inside box beam pedestal 1, is poured, makes box beam Pedestal 1 is fixed together with set 9 is managed, and is being connected dead ring 7 and the box beam pedestal 1 that first pours using the first anchor pole 8 Fixation is connect, snap-gauge 6 is fixed on dead ring 7 using anchor bolt 5, dead ring 7 is fixed, rod set 19 is being fixed on conversion On set 9, progress is secondary to be poured, and after concrete setting, forms box beam pedestal 1, first clamping plate 13 and second clamping plate 14 and conversion Set 9 cooperates and transverse steel 12 is fixed, 1 bottom of lift tank beam bottom seat and lateral prestressing force, pull rod 20 and second Grab 21 is mutually linked with conversion sleeve 9, and can make up for it that box beam pedestal 1 reduces when expanding with heat and contract with cold after concrete setting pre- answers Power promotes whole stability, and the surface of box beam pedestal 1 is avoided inclined crack occur, and snap-gauge 6 is fixed on by the second anchor pole 15 The inside of dead ring 7 limits the displacement of dead ring 7, cross bar 16 and the first grab 17 and laterally tenses the second anchor pole 15, promoted The 20 connecting box beam bottom seat 1 of horizontal prestressed draw-bar and column 2 of snap-gauge 6, after compensating for pull rod recycling tension, what column 2 lost Prestressing force enhances the tear resistance of class box beam pedestal 1 and column 2, completes the concrete box girder direction across bridge prestressed structure Assembly working.

In the description of the present invention, it should be understood that term " coaxial ", " bottom ", " one end ", " top ", " in The orientation of the instructions such as portion ", " other end ", "upper", " side ", " top ", "inner", " front ", " center ", " both ends " or position are closed System is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, rather than The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot It is construed as a limitation of the present invention.

In the present invention unless specifically defined or limited otherwise, term " installation ", " setting ", " connection ", " Gu Calmly ", the terms such as " being screwed on " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral； It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can be with It is the interaction relationship of the connection or two elements inside two elements, unless otherwise restricted clearly, for this field For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of concrete box girder direction across bridge prestressed structure, including box beam pedestal (1), it is characterised in that: the box beam pedestal (1) bottom is equipped with kerve (3), and the left and right sides of kerve (3) inside is symmetrically arranged with first clamping plate (13), and first clamping plate (13) Top be equipped with conversion sleeve (9), and the left and right ends of conversion sleeve (9) are mounted on the first anchor pole (8), in the conversion sleeve (9) It is symmetrically arranged at left and right sides of portion jack (10), and the inside of jack (10) is equipped with longitudinal reinforcement (12), and longitudinal reinforcement (12) It is connected with jack (10) grafting, the top of first anchor pole (8) is connected with second clamping plate (14), and the first anchor pole (8) is successively Through second clamping plate (14), conversion sleeve (9) and first clamping plate (13), the top of the second clamping plate (14) is equipped with dead ring (7), And the left and right sides of dead ring (7) is equipped with groove (4), and the inside of groove (4) is equipped with snap-gauge (6), and the inside of snap-gauge (6) It is equipped with anchor bolt (5), and snap-gauge (6) is connected by anchor bolt (5) with groove (4), the internal left and right sides of the dead ring (7) is right Claim to be equipped with the second anchor pole (15), and snap-gauge (6) is fixedly connected by the second anchor pole (15) with dead ring (7), second anchor pole (15) cross bar (16) are equipped between, and cross bar (16) is annular, the top of the box beam pedestal (1) is equipped with column (2), and column (2) inside is equipped with pull rod (20), and pull rod (20) is clamped through conversion sleeve (9) and with the bottom of conversion sleeve (9), the column (2) it is fixedly connected by pull rod (20) with box beam pedestal (1), the dead ring (7) and the junction of the second anchor pole (15) are equipped with Rubber mat (18), and rubber mat (18) is annular, the inside of the box beam pedestal (1) is equipped with rod set (19), and pull rod (20) passes through Rod set (19) is fixedly connected with conversion sleeve (9).

2. a kind of concrete box girder direction across bridge prestressed structure according to claim 1, it is characterised in that: the rod set (19) outer cover is equipped with lateral steel plate (22), and the inside of lateral steel plate (22) is equipped with circular groove (23), and circular groove (23) is interior Portion is equipped with kelly (25), and the outer cover of kelly (25) is equipped with the first card (24), and the top of the first card (24) is equipped with the Two cards (26), and the right side of the second card (26) is equipped with third anchor pole (27), and the second card (26) passes through third anchor pole (27) it is fixedly connected with lateral steel plate (22), and kelly (25) is clamped by the second card (26) and the first card (24) activity, And box beam pedestal (1) is fixedly connected by kelly (25) with lateral steel plate (22).

3. a kind of concrete box girder direction across bridge prestressed structure according to claim 1, it is characterised in that: first folder The end of plate (13) and second clamping plate (14) is equipped with plug (11), and the activity of plug (11) and longitudinal reinforcement (12) is clamped, And plug (11) is used to carry out longitudinally fixed, the longitudinal prestressing of lift tank beam bottom seat (1) to longitudinal reinforcement (12).

4. a kind of concrete box girder direction across bridge prestressed structure according to claim 1, it is characterised in that: the pull rod (20) bottom end is equipped with the second grab (21), and the second grab (21) and conversion sleeve (9) activity are clamped, and the second grab (21) is used It is mutually linked in conversion sleeve (9), promotes the prestressing force between column (2) and box beam pedestal (1).

5. a kind of concrete box girder direction across bridge prestressed structure according to claim 1, it is characterised in that: the cross bar (16) left and right ends are symmetrically arranged with the first grab (17), and the first grab (17) and the second anchor pole (15) activity are clamped, and the One grab (17) is used to connect the horizontal prestressing force of the second anchor pole (15) lift tank beam bottom seat (1), and box beam pedestal (1) is avoided to occur It bursts apart.