CN208762887U - A kind of bent cap formula bridge is synchronous to be lifted girder construction of putting more energy into - Google Patents

Abstract

The utility model discloses a kind of synchronous lifting girder constructions of putting more energy into of bent cap formula bridge, it is characterized in that, including horizontal interval and two stiff girders disposed in parallel, the stiff girder is that horizontally disposed i shaped steel obtains, the i shaped steel intervening web portions are vertically arranged and lower end surface is made to form the face for connecting with jack upper end, upper surface is used for and bridge beam body lower surface is bonded the face to connect, there is the transversal connecting assembly being laterally fixedly connected, transversal connecting assembly length is greater than bent cap width between two stiff girders.The synchronization of jacking up to beam body can be better achieved in the utility model, and can be minimized the local stress at the shear stress and jack active position at hinge seam, guarantee the whole lifting equipment of the safety in work progress.

Description

A kind of bent cap formula bridge is synchronous to be lifted girder construction of putting more energy into

Technical field

The utility model relates to a kind of bridge beam body lifting equipment being installed on bent cap more particularly to a kind of lid beam bridges The synchronous lifting girder construction of putting more energy into of beam.

Background technique

Currently, China's overwhelming majority servicing bridges (especially continuous curved box girder bridges) will appear after using the several years Different degrees of expansion joint breakoff phenomenon, such as: failure by shear, two sides bulging etc.；In addition a large amount of bridges are acted in various power (such as: earthquake, car and boat collision) under certain vertically and horizontally displacement can occur, in addition some Static behaviors (such as: expansion joint card Extremely, temperature action, bias of quiet dynamic load etc.) under can also generate the displacement of any direction, and gradually add up at any time.These occur The bridge of beam body deviation has seriously threatened the safety of road operation, in addition, be highly desirable to carry out whole lift to it again It rises, carry out bearing replacement or laterally resets, to tackle the problem at its root.

The research of equipment is integrally lifted for bridge, the method PLC synchronization of jacking up method that the country usually uses at present, but it is big Amount engineering practice shows that this method still has some problems, e.g., during jacking, if instrument board reading is inaccurate, or Some jack oil leak, damage etc., in this way caused by the result is that not construct according to synchronization of jacking up, often make in this way At biggish stress, or even bridge is caused to ruin the accident that people dies.Therefore synchronization of jacking up, and energy can be better achieved by how designing one kind It is enough to be minimized the local stress jacked at position, guarantee the safety in work progress, becoming has considered solve the problems, such as.

CN105735149A was once disclosed a kind of bridge jacking counterforce device suitable for small space between beam bottom and bent cap, The counterforce device includes crossing two load crossbeams on bent cap, the platform structure that is installed on load crossbeam two sides, using In high-strength bolt cuff, the cohesion device for fixing whole device and bent cap of connection load crossbeam and platform structure.It is described Two load crossbeams cross the small gap between beam slab and bent cap, pass through high-strength bolt cuff and platform knot on load crossbeam Structure is reliably connected, and entire counterforce device is reliably connected by cohesion device and bent cap, and jack is placed on the two sides platform It can carry out bridge jacking operation.

The device of the patent has the advantages that device to be self-possessed, and small, bearing capacity is high, widely applicable, between beam bottom and bent cap Application can save a large amount of man power and material in the jacking of small space blank board bridge.But still it has the following deficiencies: 1, pushing up Rise during, there are excessive stress concentrations at jack active position, cause in the presence of by beam body partial top itself it is bad can Can, jacking support effect is poor, and jacking synchronism is poor.2, the structure fixed for bent cap, reliability and stability are poor.

Utility model content

In view of the above shortcomings of the prior art, the technical problem to be solved by the utility model is to how to provide a kind of knot Structure is simple, can be avoided that jacking position local stress is excessive, improves the synchronous lifting of bent cap formula bridge of jacking synchronism with putting more energy into Girder construction.

In order to solve the above-mentioned technical problem, the utility model uses the following technical solution:

A kind of bent cap formula bridge is synchronous to be lifted girder construction of putting more energy into, which is characterized in that including horizontal interval and is arranged in parallel Two stiff girders, the stiff girder is that horizontally disposed i shaped steel obtains, and the i shaped steel intervening web portions are perpendicular To being arranged and lower end surface being made to form the face for connecting with jack upper end, upper surface is used for and the fitting of bridge beam body lower surface The face to connect, has the transversal connecting assembly being laterally fixedly connected between two stiff girders, and transversal connecting assembly length is greater than lid Beam width.

This, the girder construction of putting more energy into of this programme can be used for CN105735149A described in background technique and once be disclosed one kind Between beam bottom and bent cap the bridge jacking counterforce device of small space.Stiff girder is placed in the thousand of counterforce device when use On jin top, jacking is realized so that synchronizing between each jack and forcing in beam body.Therefore the setting of stiff girder, can both prevent due to Asynchronous jacking phenomenon caused by the accidents such as jacking equipment damage, oil leak, and can reduce the shear stress and thousand at hinge seam Local stress at the active position of jin top, improves the intensity of bent cap in the construction process.It is put more energy into simultaneously using i shaped steel Beam, i shaped steel are standard element, facilitate production installation to reduce construction cost, and i shaped steel self structure has upper and lower two A load-carrying surface is suitble to force structure herein, can be improved stability of strutting system.Affixed between two stiff girders to be one simultaneously The globality that entirety, preferably raising bent cap two sides put more energy into beam stress.

Further, metal caul is additionally provided between i shaped steel and jack upper end.Preferably to transmit gravity, mention High stability of strutting system.

Further, the stiff girder is connected by the docking of more piece i shaped steel end and is obtained.

In this way, can preferably length of the extending structure on bridge width direction, preferably be conducive to realize to Bridge Beam The support of body jacks.

Further, two pieces of buttcover plates are folded at every section i shaped steel docking, buttcover plate is fitted among i shaped steel The two sides of connecting plate part are simultaneously fixedly connected by bolt to wearing.

This spline structure is simple, and stable connection is reliable, and the extension for realizing i shaped steel is facilitated to connect to form stiff girder.

Further, the transversal connecting assembly includes the connecting rod of horizontal scalable setting, and connecting rod can phase for two Mutually be slidably matched the casing composition being arranged, and connecting rod both ends are fixed on stiff girder.

It in this way, connecting rod does not influence the load transmitting of up and down direction, and can be realized the free extension of horizontal direction, make it Flexible adjustment can be realized according to bent cap size and jack installation site, it is more convenient to use.

Further, in connecting rod at two casing cooperations, external sleeve surface is provided through fastening thread hole, tightly It is combined with fastening bolt Gu being screwed in threaded hole, fastening bolt inner end and internal casing offset realization to the opposite position of two casings The fixation set.

In this way, casing elongates or shortens, it after reaching target length, can be tightened by fastening bolt, keep its non-telescoping, Play the role of improving lateral stability.

Further, the fastening thread hole on casing and corresponding fastening bolt are provided with two groups, and along same straight line side To setting.

It is adjusted in place and after fixing in this way, can better ensure that in casing, connecting rod globality in the horizontal direction.

Further, connection boom end is welded with vertical link block, and link block connects by the way that horizontal bolt is fixed It connects on the middle connecting plate of stiff girder i shaped steel.

In this way, facilitating being connected and fixed for connecting rod, whole load stability and reliability are improved.

Further, link block is rectangle, and connection among the bolt by being set to four corners and i shaped steel Plate is connected.

In this way, improving the fixed reliability of connection boom end.

Further, two bar connecting rods are at least connected on every section i shaped steel.The direction that can preferably improve the standard is held The globality of power.

In conclusion the synchronization of jacking up to beam body can be better achieved in the utility model, and it can will cut with scissors cutting at seam Local stress at shearing stress and jack active position is minimized, and guarantees that the whole lifting of the safety in work progress is set It is standby.

Detailed description of the invention

Fig. 1 is the overall structure after a kind of bridge lifting equipment installation based on bent cap using the utility model structure Schematic diagram.

Fig. 2 is the top view of independent bridge lifting equipment part in Fig. 1.

Fig. 3 is the side view of independent one group of bent cap fixed device and lifting component in Fig. 1.

Specific embodiment

Below with reference to a kind of bridge lifting equipment embodiment using the utility model structure based on bent cap and its attached The utility model is described in further detail for figure.

Optimum embodiment: as shown in Figure 1 to Figure 3, a kind of bridge lifting equipment based on bent cap, including the fixed device of bent cap With lifting component, the fixed device of the bent cap is fixed on bent cap 1, and has two for being formed in 1 width direction two sides of bent cap Support platform, the lifting component includes the jack 2 being arranged in support platform, wherein the jack 2 is multiple and edge Bent cap length direction, which is arranged in two support platforms, constitutes two column, and 2 top of each column jack is by one along bridge lateral The stiff girder and bridge beam body 3 of setting connect.

In this way, the setting of stiff girder, can both prevent asynchronous as caused by the accidents such as jacking equipment damage, oil leak Phenomenon is jacked, and can reduce the local stress at the shear stress and jack active position at hinge seam, bent cap is improved and is applying Intensity during work.

Wherein, the fixed device of the bent cap, including two fixed plates 4, the fitting of fixed plate 4 are arranged at left and right sides of bent cap, 4 upper end of two fixed plates along bent cap upper surface is folded to portion to the level that middle position extends after there is a relative level to be folded to, The level of two fixed plates 4 is folded between portion end there are the gap for tension, and the level of two fixed plates 4 is folded to portion end also With the docking section upwardly extended, it is provided with turnbuckle 5 between docking section and is connected, two 4 lower ends of fixed plate exceed downwards Bent cap lower surface is simultaneously provided with horizontal lower turnbuckle 6 and is connected, and has the edge of a wing extended horizontally outward on the outside of two fixed plates Plate 7,7 upper surface of flange plate constitute support platform.

In this way, snapped at left and right sides of bent cap in the fixed device of this bent cap using the fixed plate of two inverted L-shapeds, then according to By upper and lower turnbuckle fixed strain, block structure and bent cap tightly, realization is fixedly connected with and is adjacent to load with bent cap, Guarantee support platform stability.It is compared with bent cap fixed structure disclosed in CN105735149A patent, without vertically arranged Bolt is connected, less using component, structure is simpler, and installation is more convenient, and structural integrity is more preferable, and stability is higher.

Wherein, the fixed plate 4 is the steel plate structure of monoblock cast forming.In this way, improving structural integrity and intensity, mention The fixed reliability of height.

Wherein, 8 shape of skewed horizontal load component is further fixedly arranged between 7 lower surface of flange plate and the fixed plate lateral surface of lower section At triangle inclined strut structure.

In this way, the structural strength of support platform can be improved preferably, support reliability is improved, guarantees construction safety.

Wherein, skewed horizontal load component 8 is welded and fixed to obtain using angle steel.Simple with structure, intensity is reliable, easy for construction The advantages of.

Wherein, the upper turnbuckle 5 and lower turnbuckle 6 are high-strength bolt.Can preferably bearing load, improve Stability.

Wherein, horizontal force bearing plate 9, horizontal force bearing plate 9 or so two are additionally provided between 1 lower surface of bent cap and lower turnbuckle End and fixed plate medial surface are affixed setting.

In this way, horizontal force bearing plate makes the downward reaction force generated when jack works in support platform, by oblique When being applied to fixed plate lower end to supporting member and be decomposed into inward pressure, which first acts on horizontal force bearing plate, and energy It is enough to be offset by horizontal force bearing plate and be converted into the internal stress of horizontal force bearing plate, and then avoid bent cap two sides (especially two sides lower end Position) by the excessive deformation for causing bent cap itself of inward pressure or breakage influenced device stability of strutting system.

In present embodiment, horizontal force bearing plate 9 is the convex arc-shaped spring steel plate in middle part and middle part upper surface and bent cap Lower surface is affixed.

It is in this way because when jack is installed, it is ensured that the installation of fixed plate is fixed, and jack installation site is wide in bridge It is on degree direction and the support being connected between bent cap and bridge beam body is supported to shift to install.It is equal to jack in this way to work When, can change bent cap part by bridge downward pressure forced position, be likely to cause in this way bent cap local compression power it is excessive and Generate downward flexing deformation.Therefore after using the horizontal force bearing plate of this structure, when horizontal force bearing plate two sides are pressurized, production will lead to Raw upward deformation, converts two sides pressure to the upward top power applied to bent cap, so that the top power and bent cap Because the downward pressure in part that jack effect generates offsets, bent cap is avoided to be generated by jack active position excessive downward It deforms and influences device stability of strutting system.In other embodiment, horizontal force bearing plate can also be horizontally disposed steel plate, make Its support strength it is higher, load changing effect is more preferable.

Wherein, horizontal 9 left and right ends position of force bearing plate and the setting of 8 lower end position face of skewed horizontal load component.So that above-mentioned Effect reaches best.

Wherein, the stiff girder is that horizontally disposed i shaped steel 10 obtains, the 10 middle connecting plate portion of i shaped steel Divide vertically arranged and lower end surface and 2 upper end of jack are connected, upper surface and the fitting of 3 lower surface of bridge beam body connect.

In this way, obtaining stiff girder using i shaped steel 10, i shaped steel is standard element, and production installation is facilitated to reduce construction Cost, and i shaped steel self structure has upper and lower two load-carrying surfaces, is suitble to force structure herein, can be improved supporting & stablizing Property.

Wherein, metal caul 11 is additionally provided between 2 upper end of i shaped steel 10 and jack.Preferably to transmit gravity, Improve stability of strutting system.

Wherein, the fixed device of the bent cap is that support is spaced apart multiple above bent cap, the fixed device of multiple bent caps Jack integral arrangement at two column, the stiff girder by more piece i shaped steel end docking be connected obtains.

In this way, the installation of the fixed device of the more convenient bent cap of the support position that is staggered.Can preferably extending structure in bridge Length in width direction is preferably conducive to realize that the support to bridge beam body jacks.

Wherein, two pieces of buttcover plates 12 are folded at every 10 docking of section i shaped steel, buttcover plate 12 is fitted in i shaped steel Between connecting plate part two sides and be fixedly connected by bolt to wearing.

This spline structure is simple, and stable connection is reliable, and the extension for realizing i shaped steel is facilitated to connect to form stiff girder.

Wherein, there is the transversal connecting assembly being laterally fixedly connected between two stiff girders.

In this way, affixed between two stiff girders to be an entirety, preferably raising bent cap two sides are put more energy into beam stress Globality.

Wherein, the transversal connecting assembly includes the connecting rod 13 of horizontal scalable setting, and connecting rod 13 can phase for two Mutually be slidably matched the casing composition being arranged, and 13 both ends of connecting rod are fixed on stiff girder.

It in this way, connecting rod does not influence the load transmitting of up and down direction, and can be realized the free extension of horizontal direction, make it Flexible adjustment can be realized according to bent cap size and jack installation site, it is more convenient to use.

Wherein, in connecting rod 13 at two casing cooperations, external sleeve surface is provided through fastening thread hole, fastening Be screwed in threaded hole and be combined with fastening bolt 14,14 inner end of fastening bolt offset with internal casing realize it is opposite to two casings The fixation of position.

In this way, casing elongates or shortens, it after reaching target length, can be tightened by fastening bolt, keep its non-telescoping, Play the role of improving lateral stability.

Wherein, the fastening thread hole on casing and corresponding fastening bolt 14 are provided with two groups, and along same rectilinear direction Setting.

It is adjusted in place and after fixing in this way, can better ensure that in casing, connecting rod globality in the horizontal direction.

Wherein, 13 end of connecting rod is welded with vertical link block 15, and link block 15 is fixed by horizontal bolt It is connected on the middle connecting plate of stiff girder i shaped steel.

In this way, facilitating being connected and fixed for connecting rod, whole load stability and reliability are improved.

Wherein, link block 15 is rectangle, and bolt and i shaped steel middle connecting plate by being set to four corners It is connected.

In this way, improving the fixed reliability of connection boom end.

Wherein, two bar connecting rods 13 are at least connected on every section i shaped steel 10.The direction that can preferably improve the standard is held The globality of power.

Claims (10)

1. a kind of synchronous lifting girder construction of putting more energy into of bent cap formula bridge, which is characterized in that including horizontal interval and disposed in parallel Two stiff girders, the stiff girder are that horizontally disposed i shaped steel obtains, and the i shaped steel intervening web portions are vertical It is arranged and lower end surface is made to form the face for connecting with jack upper end, upper surface is used for and bridge beam body lower surface is bonded phase The face connect, has the transversal connecting assembly being laterally fixedly connected between two stiff girders, and transversal connecting assembly length is greater than bent cap Width.

2. the synchronous lifting girder construction of putting more energy into of bent cap formula bridge as described in claim 1, which is characterized in that i shaped steel and thousand Jin top is additionally provided with metal caul between upper end.

3. the synchronous lifting girder construction of putting more energy into of bent cap formula bridge as described in claim 1, which is characterized in that the stiff girder by The docking of more piece i shaped steel end, which is connected, to be obtained.

4. the synchronous lifting girder construction of putting more energy into of bent cap formula bridge as claimed in claim 3, which is characterized in that every section i shaped steel It is folded with two pieces of buttcover plates at docking, buttcover plate is fitted in the two sides of i shaped steel intervening web portions and by bolt to wearing It is fixedly connected.

5. the synchronous lifting girder construction of putting more energy into of bent cap formula bridge as described in claim 1, which is characterized in that the lateral connection Component includes the connecting rod of horizontal scalable setting, and connecting rod is two casing compositions being arranged that can mutually be slidably matched, connection Bar both ends are fixed on stiff girder.

6. the synchronous lifting girder construction of putting more energy into of bent cap formula bridge as claimed in claim 5, which is characterized in that two in connecting rod At casing cooperation, external sleeve surface is provided through fastening thread hole, is screwed in fastening thread hole and is combined with fastening bolt, Fastening bolt inner end and internal casing offset the fixation realized to two casing relative positions.

7. the synchronous lifting girder construction of putting more energy into of bent cap formula bridge as claimed in claim 6, which is characterized in that the fastening on casing Threaded hole and corresponding fastening bolt are provided with two groups, and are arranged along same rectilinear direction.

8. the synchronous lifting girder construction of putting more energy into of bent cap formula bridge as claimed in claim 5, which is characterized in that connection boom end weldering It connects and is fixed with vertical link block, link block is fixedly connected on the middle connecting plate of stiff girder i shaped steel by horizontal bolt On.

9. the synchronous lifting girder construction of putting more energy into of bent cap formula bridge as claimed in claim 8, which is characterized in that link block is square Shape, and the bolt by being set to four corners is connected with i shaped steel middle connecting plate.

10. the synchronous lifting girder construction of putting more energy into of bent cap formula bridge as claimed in claim 5, which is characterized in that every section is I-shaped Two bar connecting rods are at least connected on steel.