CN110158480A - The height regulation method of beam body at a kind of bridge pad - Google Patents
The height regulation method of beam body at a kind of bridge pad Download PDFInfo
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- CN110158480A CN110158480A CN201910521444.2A CN201910521444A CN110158480A CN 110158480 A CN110158480 A CN 110158480A CN 201910521444 A CN201910521444 A CN 201910521444A CN 110158480 A CN110158480 A CN 110158480A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The present invention relates to bridge structure technical field, disclose a kind of height regulation method of beam body at bridge pad, include the following steps: S1, determine support on each pier at the beam body absolute altitude height difference that needs to adjust upward；The cushion block of S2, the height difference adjusted as needed production respective thickness；S3, by beam body synchronization of jacking up at the support for needing to adjust absolute altitude to the first preset height h；S4, the corresponding cushion block of installation is placed between support and beam body, between support and bearing pad stone or between support and pier；S5, the beam body of jack-up is synchronized and is fallen, complete the adjustment of the beam body absolute altitude at support.The cushion block of specified thickness is added between the support and beam body of bridge, the absolute altitude of each position of beam body is set to be maintained at the height difference of original state, at adjustment support beam body absolute altitude perhaps end reaction to eliminate or reduce bridge superstructure because second inner force caused by differential settlement adversely affects.
Description
Technical field
The present invention relates to a kind of height regulation methods of beam body at bridge structure technical field more particularly to bridge pad.
Background technique
After bridge structure is built up, substructure pile foundation can settle over a period to come, this will cause on bridge
The reassignment of portion's structural internal force.And for the continuous beam on many supports for belonging to statically indeterminate structure, each adjacent pier base of substructure
The differential settlement displacement of plinth will lead to the generation of second inner force, and excessive second inner force can seriously affect structure safety.Same seat bridge
Beam is likely to occur differential settlement because the soil layer of each adjacent pile foundation is uneven or discontinuous.In addition to this, the old and new
Spelling wide (or widening) bridge structure also will appear similar problems between new, old bridge, is primarily due to new, old bridge beam presence and builds
It makes the time difference, old-fashioned bridge foundation sedimentation has been completed, and the new bridge foundation settlement time is delayed, the two foundation settlement time irreversibility,
And then the displacement of direction across bridge differential settlement is generated between new, old bridge, equally also second inner force can be generated in bridge superstructure.
Therefore, to eliminate or reducing bridge structure infrastructure differential settlement bring adverse effect, need to track prison
The sedimentation deformation of each pier of same bridge block is surveyed, and wide (or widening) bridge of spelling is new, the sedimentation deformation between old bridge is poor, takes
Measure cuts down the sedimentation deformation difference between each pier of same bridge and spells the sedimentation of wide (or widening) bridge newly, between old bridge
Displacement difference, reduction second inner force bring adverse effect.
For bridge substructure differential settlement displacement bring adverse effect, there are engineers and technicians to propose at present
Several classes can get higher support scheme, poor to eliminate substructure sedimentation deformation at each support.The first kind is with rotatable screw shaft
The support of main-body structure adjusts height of support by the bolt screw rod (axis) inside rotary support.It is seemed in this kind of technical principle
It is feasible, but practical operation is more difficult, mainly support once comes into operation, and later period support is apparently corroded, deformed, in addition pole
Big frictional resistance is difficult to adjust height of support in such a way that rotation rises under the end reaction effect of upper kiloton.And it props up
After seat rotation, the anchor bolt hole of support and bridge structure can misplace, and cause anchoring difficult, this method practicability, behaviour
The property made is not strong.
Scheme is raised in second class, the sliding of double-wedge block opposite direction, and this kind of maximum defect of scheme has two o'clock, first is that passing through folding wedge
The sliding of shape block opposite direction realizes that support is turned up, and the opposite sliding force of application is more difficult, second is that wedge block is steady in normal use process
Qualitative difference, downslide risk is higher, and sufficiently tight measure to be taken to prevent wedge block from gliding, and especially makees in vehicular impact load
Under, this non-skid feature failure probability is higher, and there are security risks.
Third class injects the scheme of liquid perhaps materials such as low-melting alloy by injecting or being discharged inside support
This substance realizes the ascending, descending of support.There are critical defects for this scheme, first under vehicular impact load action, liquid
Leakproofness is a difficult point, and under the influence of rotation displacement, the bore seal for storing liquid is difficult to ensure especially support, reveals wind
Danger is higher.Secondly, support subjects biggish vertical support reaction, to support inside inject the materials such as liquid or low-melting alloy
During, it needs to take high injection pressure that material could be pressed into support inner cavity, realize height of support adjustment purpose.From
At present from the point of view of industry level, program enforcement difficulty is very big, and cost is high.
In conclusion existing technical solution risk is high at present, difficulty is big, cost is difficult to bear, and practicability, operation
Property it is not strong.Therefore, under the premise of not influencing bridge and normally building or is current, in bridge construction beam, spell wide (widening) bridge
Beam, servicing bridges take measures, and reduce substructure because secondary internal forces caused by differential settlement displacement difference, become current
The critical issue of urgent need to resolve.
Therefore, a kind of height regulation method of beam body at bridge pad is needed, to solve the above technical problems.
Summary of the invention
The purpose of the present invention is to provide a kind of height regulation methods of beam body at bridge pad, have easy to operate, reality
Stronger with property and operability, highly-safe, difficulty of construction is small, at low cost, it is easy to accomplish the characteristics of.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of height regulation method of beam body at bridge pad is provided, is included the following steps:
S1, the height difference that the beam body absolute altitude at support on each pier needs to adjust upward is determined；
The cushion block of S2, the height difference adjusted as needed production respective thickness；
S3, by beam body synchronization of jacking up at the support for needing to adjust absolute altitude to the first preset height h；
S4, that installation is placed between support and beam body, between support and bearing pad stone or between support and pier is corresponding
Cushion block；
S5, the beam body of jack-up is synchronized and is fallen, complete the adjustment of the beam body absolute altitude at support.
As a kind of preferred embodiment of the height regulation method of beam body at bridge pad, determine at the support on each pier
Beam body absolute altitude need the height difference that adjusts upward, the method for use are as follows:
T1, settlement observation point is set at the support of Bridge Pier；
T2, the tracking observation that the first preset time is carried out to settlement observation point, obtain the sedimentation of the beam body at each support
Data；
T3, the beam body differential settlement shift differences at each support are calculated according to settling data, with each pier of determination
The height difference that beam body absolute altitude at support on platform needs to adjust upward.
As a kind of preferred embodiment of the height regulation method of beam body at bridge pad, determine at the support on each pier
Beam body absolute altitude need the height difference that adjusts upward, the method for use are as follows:
T10, device for measuring force is set in Bridge Pier, the device for measuring force is configured as the anti-of long-term follow monitoring support
Power is both needed to counter-force monitoring point at setting at least one at each support；
T20, metastable counter-force data at each support are obtained after the tracking and monitoring of the second preset time；
T30, the counter-force increment at each support is calculated according to counter-force data, determines the counter-force adjusted value at each support；
T40, the beam body at the support for needing to adjust counter-force is jacked upwards to the second preset height according to counter-force adjusted value,
Each end reaction value after ensuring to jack is equal with the initial counter-force value of the support；
T50, each support adjust end reaction in the way of step T10-T40, and then statistics calculates each one by one
The height value that beam body at a needs to jack upwards；
The beam body absolute altitude needs at the support on each pier are calculated in T60, the height value jacked upwards as needed
The height difference adjusted upward.
As a kind of preferred embodiment of the height regulation method of beam body at bridge pad, for pot bearing, in step S3
Before, the anchor bolt between support and beam body is removed, and opens up the through-hole to match with anchor bolt on cushion block.
As a kind of preferred embodiment of the height regulation method of beam body at bridge pad, for laminated rubber bearing, in step
Before rapid S3, anchor bolt hole is opened up in the bottom of beam body, the through-hole to match with anchor bolt hole is opened up on cushion block.
As a kind of preferred embodiment of the height regulation method of beam body at bridge pad, for pot bearing, in step S5
Through-hole anchor bolt passed through later on anchor hole and cushion block on pot bearing is anchored in beam body.
As a kind of preferred embodiment of the height regulation method of beam body at bridge pad, for laminated rubber bearing, in step
In rapid S4, cushion block is anchored in by beam body bottom by anchor bolt.
As a kind of preferred embodiment of the height regulation method of beam body at bridge pad, the first preset height h and support it
Between difference in height be greater than the thickness for being installed on cushion block at this.
As a kind of preferred embodiment of the height regulation method of beam body at bridge pad, the cushion block is metal plate.
Beneficial effects of the present invention: the cushion block by adding specified thickness between the support and beam body of bridge makes beam body
The absolute altitude of each position be maintained at the height difference of original state, beam body absolute altitude or end reaction at support are adjusted, to disappear
Bridge superstructure is removed or reduced because second inner force caused by differential settlement adversely affects；The cushion block of installation is held in support
Between beam body, between support and bearing pad stone or between support and pier, bearing capacity is bigger, and it is living not fear vehicle
Impact is carried, the production method of safety and stability, cushion block is simple, at low cost；Furthermore the jacking of beam body jacks instrument by jack etc.
It can be completed；This method is easy to operate, has stronger practicability, operability stronger, and highly-safe, difficulty of construction is small, cost
It is low, it is easy to accomplish the characteristics of.
Detailed description of the invention
Fig. 1 is the arrangement schematic diagram of settlement observation point provided by Embodiment 2 of the present invention；
Fig. 2 is that the structure of the anchor bolt of the upper base plate for the dismounting support that the embodiment of the present invention two and embodiment three provide is shown
It is intended to；
Fig. 3 is the structural representation by beam body synchronization of jacking up agreement height h that the embodiment of the present invention two and embodiment three provide
Figure；
Fig. 4 is the structural schematic diagram being placed in cushion block on support that the embodiment of the present invention two and embodiment three provide；
Fig. 5 is the embodiment of the present invention two with embodiment three by the structural schematic diagram of the synchronous lower backwardness of the beam body of jack-up；
Fig. 6 is that invention embodiment two and embodiment three show the structure that cushion block is fixed between support and beam body
It is intended to；
Fig. 7 is the counter-force observation point arrangement schematic diagram that the embodiment of the present invention three provides；
Fig. 8 is the arrangement schematic diagram for the settlement observation point that the embodiment of the present invention four provides；
Fig. 9 is that the bottom in beam body that the embodiment of the present invention four and embodiment five provide opens up the structure in anchor bolt hole and shows
It is intended to；
Figure 10 is the structural representation that beam body is jacked to the first preset height h that the embodiment of the present invention four and embodiment five provide
Figure；
Figure 11, be the bottom that cushion block is fixed on to beam body that the embodiment of the present invention four and embodiment five provide structural representation
Figure；
The structural schematic diagram by the synchronous lower backwardness of beam body that Figure 12 is the embodiment of the present invention four to be provided with embodiment five；
Figure 13 is the counter-force observation point arrangement schematic diagram that the embodiment of the present invention five provides.
In figure: 1, beam body；2, pier；3, cushion block；4, anchor bolt；5, pot bearing；6, anchor bolt hole；7, board-like rubber
Glue support；8, support cushion block.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " on ", "lower", "left", "right", "vertical", "horizontal",
The orientation or positional relationship of the instructions such as "inner", "outside" be based on the orientation or positional relationship shown in the drawings or the invention produce
Product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and should not be understood as referring to
Show or imply relative importance.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two with
On.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be
Mechanical connection, is also possible to be electrically connected.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
Embodiment one
Present embodiment discloses a kind of height regulation methods of beam body at bridge pad comprising following steps:
S1, the height difference that the beam body absolute altitude at support on each pier needs to adjust upward is determined；
The cushion block of S2, the height difference adjusted as needed production respective thickness, cushion block is the metal plate of hard, is squeezed and is not easy
Steel plate is commonly used in deformation in the construction process；
S3, by beam body synchronization of jacking up at the support for needing to adjust absolute altitude to the first preset height h；
S4, that installation is placed between support and beam body, between support and bearing pad stone or between support and pier is corresponding
Cushion block；
S5, the beam body of jack-up is synchronized and is fallen, complete the adjustment of the beam body absolute altitude at support.
Wherein, the difference in height between the first preset height h and support is greater than the thickness for the cushion block being installed at this, Ke Yiman
The subsequent construction operation space demand of foot.But top lifting height cannot be excessive, it is to be ensured that does not influence the structure safety of bridge.
By adding the cushion block of specified thickness between the support and beam body of bridge, tie up the absolute altitude of each position of beam body
Be held in the height difference of original state, adjust at support beam body absolute altitude perhaps end reaction to eliminate or reduce bridge top
Structure is adversely affected because of second inner force caused by differential settlement；The cushion block of installation is held between support and beam body, support with
Between bearing pad stone or between support and pier, bearing capacity is bigger, and does not fear vehicle active load impact, safety and stability,
The production method of cushion block is simple, at low cost；Furthermore the jacking of beam body jacks instrument by jack etc. and can be completed；This method behaviour
Make simply, have stronger practicability, operability stronger, highly-safe, difficulty of construction is small, at low cost, it is easy to accomplish the characteristics of.
Embodiment two
Present embodiment discloses a kind of height regulation method of beam body at bridge pad, primarily directed to pot bearing 5,
Include the following steps:
S10, settlement observation point is set at the support of Bridge Pier 2；
S20, the tracking observation that the first preset time is carried out to settlement observation point, obtain the heavy of the beam body 1 at each support
Drop data；
S30, the 1 differential settlement shift differences of beam body at each support are calculated according to settling data, it is each with determination
The height difference that beam body absolute altitude at support on pier 2 needs to adjust upward；
The cushion block 3 of S40, the height difference adjusted as needed production respective thickness, cushion block 3 are steel plate；
S50, anchor bolt 4 between support and beam body 1 is removed, and opens up on cushion block 3 and matches with anchor bolt 4
Through-hole；
S60, by 1 synchronization of jacking up of beam body at the support for needing to adjust absolute altitude to the first preset height h；
S70, it is placed between support and beam body 1 and corresponding cushion block 3 is installed；
S80, the beam body 1 of jack-up is synchronized and is fallen, anchor bolt 4 passed through on the anchor hole and cushion block 3 on pot bearing 5
Through-hole be anchored in the anchor hole in beam body 1, to realize the fixation of cushion block 3, complete the adjustment of the beam body absolute altitude at support.
Specifically, S100, setting 1 settlement observation point of beam body at the support of Bridge Pier 2.(altogether with Fig. 1 four-span continuous beams beam
Support at 10) for the method that illustrates 1 settlement observation process of beam body and how to utilize settling data, other different bridge opening quantity
Statically indeterminate bridge structure, settlement observation method is identical with this.As shown in Figure 1, arranging 1 settlement observation of beam body at each support
Point, Z1~Z10 are 1 settlement observation point of beam body.
S200, long-term follow observation is carried out to the bridge that settlement observation point has been arranged, when settlement observation data stabilization or
(range that the structure of beam body 1 is born is according to beam body 1 when the range that the sedimentation difference of beam body 1 at each support can be born beyond structure
The specific structure of itself is related, and the structure tolerance range of the beam body 1 of different structures is different), prepare to beam body mark at each support
Height is adjusted.
S300, according to settlement observation data, calculate 1 differential settlement shift differences of beam body at each 2 support of pier, determine
Beam body absolute altitude needs the height difference Δ h adjusted upward at each 2 support of piern；
Δhn=| Z1|-min{|Z1|, | Z2|, | Z3|, | Z4|, | Z5|, | Z6|, | Z7|, | Z8|, | Z9|, | Z10|}
Wherein, Δ hnIndicate support number ZnLocate beam body absolute altitude up adjusted value；
|Zn| indicate support number ZnLocate 1 settlement observation data absolute value of beam body；
|Z1|、|Z2|、|Z3|、|Z4|、|Z5|、|Z6|、|Z7|、|Z8|、|Z9|、|Z10| indicate settlement observation point Z1~Z10Place
1 settlement observation data absolute value of beam body；
min{|Z1|, | Z2|, | Z3|, | Z4|, | Z5|, | Z6|, | Z7|, | Z8|, | Z9|, | Z10| indicate settlement observation point Z1~
Z10Locate the smallest 1 settling data absolute value of beam body.
S400, as shown in Fig. 2, remove support 1 bottom of upper base plate and beam body between anchor bolt 4.
S500, as shown in figure 3, by 1 synchronization of jacking up of beam body at the support for needing to adjust absolute altitude to agreement height h, the top
On the one hand rise will ensure not influencing structure safety, next is able to satisfy the space requirement of subsequent construction operation.For new bridge construction
Beam is considered as the installation site that jack, temporary support are reserved in the position appropriate on pier 2；For servicing bridges,
Suitable position or peripheral hardware is selected to jack the installation requirements for supporting platform to meet jack and temporary support on pier 2.
S600, as shown in figure 4, between the upper base plate and beam body 1 of support install one piece customization steel plate.The steel plate is put down
1 bolt hole of face size, bolt hole and beam body, support planar dimension match, it is ensured that can smoothly install.The steel plate thickness of customization
The height difference Δ h for needing to adjust upward with the beam body absolute altitude at the support of each pier 2 of S300 abovenUnanimously.
S700, as shown in Figure 5 and Figure 6 falls the beam body 1 of jack-up is synchronous, then tightens connection bolt, thus complete branch
The adjustment of beam body absolute altitude at seat.
Cushion block 3 can also be placed and be installed between pot bearing 5 and pier 2 in other embodiments.
Embodiment three
Present embodiment discloses a kind of height regulation method of beam body at bridge pad, primarily directed to pot bearing 5,
Include the following steps:
S10, device for measuring force is set in Bridge Pier 2, device for measuring force is configured as the counter-force of long-term follow monitoring support,
Be both needed to counter-force monitoring point at setting at least one at each support, two be arranged in the present embodiment, can wherein one have damage
Another can continue to monitor later；
S20, metastable counter-force data at each support are obtained after the tracking and monitoring of the second preset time, then
The counter-force increment at each support is calculated according to counter-force data, determines the counter-force adjusted value at each support；
Anchor bolt 4 between S30, dismounting support and beam body 1, will need to adjust the support of counter-force according to counter-force adjusted value
The beam body 1 at place is jacked upwards to the second preset height, it is ensured that the initial counter-force of each end reaction value and the support after jacking
It is worth equal；
S40, each support adjust end reaction in the way of described in step S10-S30, and then statistics calculates one by one
The height value that beam body 1 at each seat needs to jack upwards, and the height value then jacked upwards as needed is calculated
The height difference that beam body absolute altitude at support on each pier 2 needs to adjust upward；
The cushion block 3 of S50, the height difference adjusted as needed production respective thickness, cushion block 3 are steel plate；And it is opened up on cushion block 3
The through-hole to match with anchor bolt 4；
S60, by 1 synchronization of jacking up of beam body at the support for needing to adjust absolute altitude to the first preset height h；
S70, it is placed between support and beam body 1 and corresponding cushion block 3 is installed；
S80, the beam body 1 of jack-up is synchronized and is fallen, anchor bolt 4 passed through on the anchor hole and cushion block 3 on pot bearing 5
Through-hole be anchored in the anchor hole in beam body 1, to realize the fixation of cushion block 3, complete the adjustment of the beam body absolute altitude at support.
Specifically, S100, the support that setting can survey counter-force in Bridge Pier 2 or other device for measuring force are to long-term follow
End reaction is monitored, counter-force monitoring point at setting at least one is both needed at each support.With Fig. 7 four-span continuous beams beam (totally 10 at support)
For the method that illustrates end reaction monitoring process and how to utilize end reaction data, other different bridge opening quantity it is super quiet
Determine bridge structure, end reaction observation method is identical with this.As shown in fig. 7, arranging end reaction observation point, Z1 at each support
~Z10 is end reaction observation point.
S200, long-term follow settlement monitoring is carried out to the bridge that end reaction observation point has been arranged, when end reaction data
When the range that stable or each end reaction increment can be born beyond structure, preparation is adjusted each end reaction.
S300, according to end reaction monitoring data, the magnitude that each end reaction needs to adjust is determined, then by adjusting each
Beam body absolute altitude at support, to realize the purpose of adjustment end reaction.Each end reaction adjusted value Δ FnIt determines as follows:
ΔFn=Zn-Zn0
ΔFnIndicate support number ZnLocate support reaction incremental value, negative value indicates that the end reaction becomes smaller in use, says
There is larger sedimentation in beam body 1 at the bright support；Positive value indicates that the end reaction becomes larger in use, illustrates at the support
Beam body 1 does not settle, or smaller sedimentation occur in other opposite supports；
ZnIndicate support number ZnLocate end reaction monitor value；
Zn0Indicate support number ZnLocate end reaction initial value.
S400, for pot bearing 5, remove the anchor bolt 4 between the upper base plate of support and beam body 1, as shown in Figure 2.
S500, end reaction adjustment: firstly, by the jacking of beam body 1 at the support for needing to adjust counter-force to preset height, it is ensured that
Each end reaction value after jacking is equal with the initial counter-force of support value, and each end reaction adjustment magnitude sees above Δ in S300
Fn；Each support adjusts end reaction in this way, then counts the height value that beam body 1 jacks upwards at each support one by one；
It finally calculates beam body absolute altitude at each support and needs the height difference Δ h adjusted upwardn。
Δhn=| Z1|-min{|Z1|, | Z2|, | Z3|, | Z4|, | Z5|, | Z6|, | Z7|, | Z8|, | Z9|, | Z10|}
ΔhnIndicate support number ZnLocate beam body absolute altitude up adjusted value；
|Zn| indicate support number ZnThe altitude information absolute value that place's beam body 1 jacks upwards；
|Z1|、|Z2|、|Z3|、|Z4|、|Z5|、|Z6|、|Z7|、|Z8|、|Z9|、|Z10| indicate that end reaction is adjusted to initial
When value, 1 top lifting height observation point Z of beam body at support1~Z10The altitude information absolute value that place's beam body 1 jacks upwards；
min{|Z1|, | Z2|, | Z3|, | Z4|, | Z5|, | Z6|, | Z7|, | Z8|, | Z9|, | Z10| indicate that beam body 1 is pushed up at support
Rise observation point Z1~Z10Locate the altitude information absolute value that the smallest beam body 1 jacks upwards.
S600, as shown in figure 3, by beam body 1 at all supports again synchronization of jacking up to certain height h, the top lifting height
On the one hand to ensure not influencing structure safety, next is able to satisfy the space requirement of subsequent construction operation.
S700, as shown in figure 4, between support and beam body 1 install one piece customization steel plate.The planar dimension of the steel plate,
Bolt hole and 1 bolt hole of beam body, support planar dimension etc. match, it is ensured that can smoothly install.The steel plate thickness of customization with above
Beam body absolute altitude needs the height difference Δ h adjusted upward at each support of S500nUnanimously.
S800, as shown in Figure 5 and Figure 6 falls the beam body 1 of jack-up is synchronous, then tightens connection bolt, thus complete branch
The adjustment of seat counter-force.
Cushion block 3 can also be placed and be installed between pot bearing 5 and pier 2 in other embodiments.
Example IV
Present embodiment discloses a kind of height regulation methods of beam body at bridge pad, primarily directed to board-like rubber branch
Seat 7, places a support cushion block 8 for laminated rubber bearing 7, laminated rubber bearing 7 is placed in branch seat cushion generally on pier 2
On block 8, include the following steps:
S10, settlement observation point is set at the support of Bridge Pier 2；
S20, the tracking observation that the first preset time is carried out to settlement observation point, obtain the heavy of the beam body 1 at each support
Drop data；
S30, the 1 differential settlement shift differences of beam body at each support are calculated according to settling data, it is each with determination
The height difference that beam body absolute altitude at support on pier 2 needs to adjust upward；
The cushion block 3 of S40, the height difference adjusted as needed production respective thickness, cushion block 3 are steel plate；
S50, anchor bolt hole 6 is opened up in the bottom of beam body 1, opens up on cushion block 3 and leads to what anchor bolt hole 6 matched
Hole；
S60, by 1 synchronization of jacking up of beam body at the support for needing to adjust absolute altitude to the first preset height h；
S70, it is placed between support and beam body 1 and corresponding cushion block 3 is installed, and be anchored in cushion block 3 by anchor bolt 4
The bottom of beam body 1；
S80, the beam body 1 of jack-up is synchronized and is fallen, complete the adjustment of the beam body absolute altitude at support.
Specifically, S100, setting 1 settlement observation point of beam body at bridge pier, platform support.With Fig. 8 four-span continuous beams beam (totally 10
Place's support) for the method that illustrates settlement observation process and how to utilize settling data, other different bridge opening quantity it is super quiet
Determine bridge structure, settlement observation method is identical with this.Arrangement 1 settlement observation point of beam body at each support as shown in Figure 8, Z1~
Z10 is settlement observation point；
S200, long-term follow observation is carried out to the bridge that settlement observation point has been arranged, when settlement observation data stabilization or
When beam body 1 settles the range that difference can be born beyond structure at each support, preparation is adjusted beam body absolute altitude at each support；
S300, according to settlement observation data, calculate 1 differential settlement shift differences of beam body at each 2 support of pier, determine
Beam body absolute altitude needs the height difference Δ h adjusted upward at each 2 support of piern；
Δhn=| Z1|-min{|Z1|, | Z2|, | Z3|, | Z4|, | Z5|, | Z6|, | Z7|, | Z8|, | Z9|, | Z10|}
ΔhnIndicate support number ZnLocate beam body absolute altitude up adjusted value；
|Zn| indicate 1 settlement observation data absolute value of beam body at support number Zn；
|Z1|、|Z2|、|Z3|、|Z4|、|Z5|、|Z6|、|Z7|、|Z8|、|Z9|、|Z10| indicate settlement observation point Z1~Z10Place
1 settlement observation data absolute value of beam body；
min{|Z1|, | Z2|, | Z3|, | Z4|, | Z5|, | Z6|, | Z7|, | Z8|, | Z9|, | Z10| indicate settlement observation point Z1~
Z10Locate the smallest 1 settling data absolute value of beam body.
S400, as shown in figure 9, for laminated rubber bearing 7, in beam body 1, anchor bolt hole 6 is set.If it is new bridge construction
Beam can preset anchor bolt hole 6 in beam body 1, if it is built bridge, drill out anchor bolt in beam body 1 using drilling device
Hole 6.
S500, as shown in Figure 10, the height h that 1 synchronization of jacking up of beam body at the support for needing to adjust absolute altitude is extremely arranged, the top
On the one hand rise will ensure not influencing structure safety, next is able to satisfy the space requirement of subsequent construction operation；For new bridge construction
Beam is considered as the installation site that jack, temporary support are reserved in the position appropriate on pier 2；For servicing bridges,
Suitable position or peripheral hardware is selected to jack the installation requirements for supporting platform to meet jack and temporary support on pier 2.
S600, as shown in figure 11, beam body 1 install one piece customization steel plate.Planar dimension, bolt hole and the beam of the steel plate
1 bolt hole of body, support planar dimension etc. match, it is ensured that can smoothly install.The steel plate thickness of customization and each pier 2 of S300 above
Beam body absolute altitude needs the height difference Δ hn adjusted upward consistent at support；
S700, as shown in figure 12 falls the beam body 1 of jack-up is synchronous, thus completes beam body Pass line adjustment target at support.
Cushion block 3 can also be placed and be installed between laminated rubber bearing 7 and support cushion block 8 in other embodiments.
Embodiment five
Present embodiment discloses a kind of height regulation methods of beam body at bridge pad, primarily directed to board-like rubber branch
Seat 7, places a support cushion block 8 for laminated rubber bearing 7, laminated rubber bearing 7 is placed in branch seat cushion generally on pier 2
On block 8, include the following steps:
S10, device for measuring force is set in Bridge Pier 2, device for measuring force is configured as the counter-force of long-term follow monitoring support,
Be both needed to counter-force monitoring point at setting at least one at each support, two be arranged in the present embodiment, can wherein one have damage
Another can continue to monitor later；
S20, metastable counter-force data at each support are obtained after the tracking and monitoring of the second preset time；Then
The counter-force increment at each support is calculated according to counter-force data, determines the counter-force adjusted value at each support；
S30, the beam body 1 at the support for needing to adjust counter-force is jacked upwards to the second default height according to counter-force adjusted value
Degree, it is ensured that each end reaction value after jacking is equal with the initial counter-force of support value；
S40, each support adjust end reaction in the way of described in step S10-S30, and then statistics calculates one by one
The height value that beam body 1 at each seat needs to jack upwards；
The beam body absolute altitude needs at the support on each pier 2 are calculated in S50, the height value jacked upwards as needed
The height difference adjusted upward；
The cushion block 3 of S60, the height difference adjusted as needed production respective thickness, cushion block 3 are steel plate；
S70, anchor bolt hole 6 is opened up in the bottom of beam body 1, opens up on cushion block 3 and leads to what anchor bolt hole 6 matched
Hole；
S80, by 1 synchronization of jacking up of beam body at the support for needing to adjust absolute altitude to the first preset height h；
S90, it is placed between support and beam body 1 and corresponding cushion block 3 is installed, and be anchored in cushion block 3 by anchor bolt 4
The bottom of beam body 1；
S100, the beam body 1 of jack-up is synchronized and is fallen, complete the adjustment of the beam body absolute altitude at support.
Specifically, S100, the support that setting can survey counter-force in Bridge Pier 2 or other device for measuring force are to long-term follow
End reaction is monitored, counter-force monitoring point at setting at least one is both needed at each support.With Figure 13 four-span continuous beams beam (branch at totally 10
Seat) for the method that illustrates end reaction monitoring process and how to utilize end reaction data, other different bridge opening quantity
Statically indeterminate bridge structure, end reaction observation method are identical with this.As shown in figure 13, end reaction observation is arranged at each support
Point, Z1~Z10 are end reaction observation point.
S200, long-term follow settlement monitoring is carried out to the bridge that end reaction observation point has been arranged, when end reaction data
When the range that stable or each end reaction increment can be born beyond structure, preparation is adjusted each end reaction.
S300, according to end reaction monitoring data, the magnitude that each end reaction needs to adjust is determined, then by adjusting each
Beam body absolute altitude at support, to realize the purpose of adjustment end reaction.Each end reaction adjusted value Δ Fn presses determination；
ΔFn=Zn-Zn0
ΔFnIndicate support number ZnLocate support reaction incremental value, negative value indicates that the end reaction becomes smaller in use, says
There is larger sedimentation in beam body 1 at the bright support；Positive value indicates that the end reaction becomes larger in use, illustrates at the support
Beam body 1 does not settle, or smaller sedimentation occur in other opposite supports；
ZnIndicate end reaction monitor value at support number Zn；
Zn0Indicate end reaction initial value at support number Zn
S400, as shown in figure 9, for laminated rubber bearing 7, in beam body 1, anchor bolt hole 6 is set.If it is new bridge construction
Beam can preset anchor bolt hole 6 in beam body 1, if it is built bridge, drill out anchor bolt in beam body 1 using drilling device
Hole 6.
S500, end reaction adjustment: firstly, by the jacking of beam body 1 at the support for needing to adjust counter-force to preset height, it is ensured that
Each end reaction value after jacking is equal with the initial counter-force of support value, and each end reaction adjustment magnitude is shown in Δ F in S300n；
Each support adjusts end reaction in this way, then counts the height value that beam body 1 jacks upwards at each support one by one；Finally
It calculates beam body absolute altitude at each support and needs the height difference Δ h adjusted upwardn；
Δhn=| Z1|-min{|Z1|, | Z2|, | Z3|, | Z4|, | Z5|, | Z6|, | Z7|, | Z8|, | Z9|, | Z10|}
ΔhnIndicate support number ZnLocate beam body absolute altitude up adjusted value；
|Zn| indicate support number ZnThe altitude information absolute value that place's beam body 1 jacks upwards；
|Z1|、|Z2|、|Z3|、|Z4|、|Z5|、|Z6|、|Z7|、|Z8|、|Z9|、|Z10| indicate that end reaction is adjusted to initial
When value, 1 top lifting height observation point Z of beam body at support1~Z10The altitude information absolute value that place's beam body 1 jacks upwards；
min{|Z1|, | Z2|, | Z3|, | Z4|, | Z5|, | Z6|, | Z7|, | Z8|, | Z9|, | Z10| indicate that beam body 1 is pushed up at support
Rise observation point Z1~Z10Locate the altitude information absolute value that the smallest beam body 1 jacks upwards.
S600, as shown in Figure 10, by beam body 1 at all supports again synchronization of jacking up to certain height h, the top lifting height
On the one hand to ensure not influencing structure safety, next is able to satisfy the space requirement of subsequent construction operation.
S700, as shown in figure 11, the steel plate of one piece of customization of installation between support and beam body 1.The planar dimension of the steel plate,
Bolt hole and 1 bolt hole of beam body, support planar dimension etc. match, it is ensured that can smoothly install.The steel plate thickness of customization with above
Beam body absolute altitude needs the height difference Δ h adjusted upward at each support of S500nUnanimously.
S800, as shown in figure 12 falls the beam body 1 of jack-up is synchronous, thus completes the beam body 1 at support and highly adjust mesh
Mark.
Cushion block 3 can also be placed and be installed between laminated rubber bearing 7 and support cushion block 8 in other embodiments.
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating examples made by the present invention, and being not is pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (9)
1. the height regulation method of beam body at a kind of bridge pad, which comprises the steps of:
S1, the height difference that the beam body absolute altitude at support on each pier (2) needs to adjust upward is determined；
The cushion block (3) of S2, the height difference adjusted as needed production respective thickness；
S3, by beam body (1) synchronization of jacking up at the support for needing to adjust absolute altitude to the first preset height h；
S4, that installation is placed between support and beam body (1), between support and bearing pad stone or between support and pier (2) is corresponding
Cushion block (3)；
S5, the beam body (1) of jack-up is synchronized and is fallen, complete the adjustment of the beam body absolute altitude at support.
2. the height regulation method of beam body at bridge pad according to claim 1, which is characterized in that determine each pier
(2) height difference that the beam body absolute altitude at the support on needs to adjust upward, the method for use are as follows:
T1, settlement observation point is set at the support of Bridge Pier (2)；
T2, the tracking observation that the first preset time is carried out to settlement observation point, obtain the settlement number of the beam body (1) at each support
According to；
T3, beam body (1) differential settlement shift differences at each support are calculated according to settling data, with each pier of determination
(2) height difference that the beam body absolute altitude at the support on needs to adjust upward.
3. the height regulation method of beam body at bridge pad according to claim 1, which is characterized in that determine each pier
(2) height difference that the beam body absolute altitude at the support on needs to adjust upward, the method for use are as follows:
T10, device for measuring force is set on Bridge Pier (2), the device for measuring force is configured as the anti-of long-term follow monitoring support
Power is both needed to counter-force monitoring point at setting at least one at each support；
T20, metastable counter-force data at each support are obtained after the tracking and monitoring of the second preset time；
T30, the counter-force increment at each support is calculated according to counter-force data, determines the counter-force adjusted value at each support；
T40, the beam body (1) at the support for needing to adjust counter-force is jacked upwards to the second preset height according to counter-force adjusted value,
Each end reaction value after ensuring to jack is equal with the initial counter-force value of the support；
T50, each support adjust end reaction in the way of step T10-T40, and then statistics calculates each seat one by one
The height value that the beam body (1) at place needs to jack upwards；
Beam body absolute altitude at T60, the support that the height value that jacks upwards is calculated on each pier (2) as needed need to
The height difference of upper adjustment.
4. the height regulation method of beam body at bridge pad according to claim 1, which is characterized in that for pot bearing
(5), before step S3, the anchor bolt (4) between support and beam body (1) is removed, and is opened up and anchoring spiral shell on cushion block (3)
The through-hole that bolt (4) matches.
5. the height regulation method of beam body at bridge pad according to claim 1, which is characterized in that for board-like rubber
Support (7) opens up anchor bolt hole (6) in the bottom of beam body (1) before step S3, opens up on cushion block (3) and anchoring spiral shell
The through-hole that keyhole (6) matches.
6. the height regulation method of beam body at bridge pad according to claim 1, which is characterized in that for pot bearing
(5), the through-hole after step s 5 passed through anchor bolt (4) on anchor hole and cushion block (3) on pot bearing (5) is anchored in
In beam body (1).
7. the height regulation method of beam body at bridge pad according to claim 5, which is characterized in that for board-like rubber
Cushion block (3) is anchored in beam body (1) bottom by anchor bolt (4) in step s 4 by support (7).
8. the height regulation method of beam body at bridge pad according to claim 5, which is characterized in that described first is default
Difference in height between height h and support is greater than the thickness for the cushion block (3) being installed at this.
9. the height regulation method of beam body at bridge pad according to claim 1, which is characterized in that the cushion block (3)
For metal plate.
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