CN106320193A - Method for leveling bridge support during replacement and new installation - Google Patents
Method for leveling bridge support during replacement and new installation Download PDFInfo
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- CN106320193A CN106320193A CN201610983821.0A CN201610983821A CN106320193A CN 106320193 A CN106320193 A CN 106320193A CN 201610983821 A CN201610983821 A CN 201610983821A CN 106320193 A CN106320193 A CN 106320193A
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- steel plate
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000009434 installation Methods 0.000 title claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 50
- 239000010959 steel Substances 0.000 claims abstract description 50
- 238000010276 construction Methods 0.000 claims abstract description 20
- 239000011083 cement mortar Substances 0.000 claims abstract description 10
- 244000062793 Sorghum vulgare Species 0.000 claims description 81
- 235000019713 millet Nutrition 0.000 claims description 81
- 230000001360 synchronised effect Effects 0.000 claims description 56
- 239000003921 oil Substances 0.000 claims description 30
- 238000006073 displacement reaction Methods 0.000 claims description 24
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000002457 bidirectional effect Effects 0.000 claims description 6
- 230000006837 decompression Effects 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 235000014593 oils and fats Nutrition 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 239000008267 milk Substances 0.000 claims description 5
- 210000004080 milk Anatomy 0.000 claims description 5
- 235000013336 milk Nutrition 0.000 claims description 5
- 238000007667 floating Methods 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 5
- 230000032683 aging Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
-
- 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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a method for leveling a bridge support during replacement and new installation and belongs to the technical field of bridge reconstruction. The method comprises construction preparation, jack installation, integral jacking, graded jacking, replacement and leveling and bridge falling. The method for leveling the bridge support during replacement and new installation comprises a step S1 of construction preparation, a step S2 of jack installation, a step S3 of integral jacking, a step S4 of graded jacking, a step S5 of replacement and leveling and a step S6 of bridge falling. In the process of replacing or installing the bridge support, the contact surface between the support and the bridge bottom is leveled first and smeared with cement mortar, a horizontal steel plate is installed, and a level meter is utilize to accurately control the levelness of the support, the service life of the support is prolonged, and integral structure stability of a bridge is guaranteed. The leveling method is simple, reliable, quick, convenient and suitable for being popularized and used in the bridge support leveling process.
Description
Technical field
The present invention relates to Bridge Reconstruction technical field, a kind of Bridge Support Replacement and newly installed time leveling side
Method.
Background technology
Flourish along with China's all our undertakings, volume of transport is increasing, much eighties of last century bridge with
The passage of time, the problem of the Lack of support produced owing to bearing is aging is the most serious.Bridge pad is aging to be produced
Bridge structure destroy, the Tough questions that at present bridge is faced especially.Bridge pad not only carry superstructure weight,
The bearing reaction of car load, and be directly passed to pier, it is ensured that pier can uniform stressed, but also ensure that structure exists
Free Transform under the factors such as mobile load, temperature and concrete shrinkage and creep effect, but when replacing or mounting bridge beam support, it is adjusted
Quadratic method is unreliable, directly affects the service life of bridge pad and the overall structure that destroys a bridge, to this end, we have invented one
Bridge Support Replacement and newly installed time leveling method.
Summary of the invention
It is an object of the invention to provide a kind of Bridge Support Replacement and newly installed time leveling method, to solve the above-mentioned back of the body
The traditional leveling method proposed in scape technology is inaccurate thus affects the service life of bearing and integrally-built the asking that destroy a bridge
Topic.
For achieving the above object, the present invention provides following technical scheme: a kind of Bridge Support Replacement and newly installed time tune
Quadratic method, including preparation of construction, jack installation, integral jacking, classification jacking, changes and leveling and the fine strain of millet step that falls, described bridge
Leveling method when beam support is changed and be newly installed, specifically comprises the following steps that
S1: preparation of construction: erection construction operating platform simple rack, clears up bridge pier, countertop foreign body, and carries out theoretical meter
Calculate, determine the once safety jacking amount of each bearing reaction size and buttress；
S2: jack is installed: use ultrathin synchronous hydra-ulic jacks to be placed on centrage at the bottom of fine strain of millet, ultrathin synchronization liquid
Pressure jack top is away from concrete edge 10--15cm, and installs oil gauge and displacement transducer；
S3: integral jacking: open pressure fuel pump and rise to 6--9MPa, and observe displacement transducer reading, jack-up 2--5mm
Time, oil pump stops pressurization, and stirrup is enclosed within ultrathin synchronous hydra-ulic jacks outer wall, in case jack decompression causes jack
Falling after rise, wherein oil pump is controlled by Hydraulic Station entirety；
S4: classification jacking: when the deadweight of fine strain of millet body is fully transferred on ultrathin synchronous hydra-ulic jacks, top lift no longer increases
Add, use classification jacking, each jacking 2--5mm, each buttress jacking amount difference 0.2--0.5mm, stop after ejecting replacing gap
Running；
S5: change and leveling: removed by the upper steel plate of bearing, requires contact surface chipping at the bottom of upper steel plate and fine strain of millet according to design
Whole, and carry out levelling with cement mortar and steel plate, the thickness of its screed-coat with do not change before the relative altitude of bearing front and rear beam
Unanimously；
S6: fall fine strain of millet: after grouting material is strengthened 2--5 days, carry out falling fine strain of millet, to ensure that during the fine strain of millet that falls each is ultrathin
The once falling amount of synchronous hydra-ulic jacks, and jack falling holding synchronization, to guarantee fine strain of millet body whole machine balancing, the fine strain of millet that falls is to actual
During position, check bearing support situation.
Preferably, in described step S1, measure at the bottom of fine strain of millet to buttress and the distance of countertop so that it is distance controlling is at 3--
6cm, as less than 3cm, then cuts pier top part concrete, and floating by cement mortar.
Preferably, in described step S2, use between ultrathin synchronous hydra-ulic jacks and fine strain of millet bottom surface, pinner or bent cap
Pading plate mode pads, and keeps each ultrathin synchronous hydra-ulic jacks pressure consistent, and its jacking face and installed surface keep flat
Whole, ultrathin synchronous hydra-ulic jacks is near bearing, and in solid-section bottom at the bottom of fine strain of millet, displacement transducer is installed and kept vertical, its
Range is 0--50mm.
Preferably, in described step S2, ultrathin synchronous hydra-ulic jacks selects external diameter 16--20cm, internal diameter 10--
14cm, thickness 40--50mm, stroke 8--12mm, wherein, the piston seal of ultrathin synchronous hydra-ulic jacks is three road combination types
Sealing ring.
Preferably, in described step S3, Hydraulic Station is by hydraulic manifold block, overflow valve, bidirectional electromagnetic valve, Pressure gauge and oil pipe
Composition, wherein tubing length 6--20m, the Integral synchronous of Hydraulic Station control oil pump operate, utilize displacement transducer real-time monitored
Jacking amount.
Preferably, in described step S5, grafter or long-handled hook is used to be removed by former bearing after head space at the bottom of fine strain of millet, on removal bearing
During steel plate, superscribe the bottom of steel plate with oils and fats cloth, and by the level of level indicator adjustment upper steel plate, reserve simultaneously
The decrement of 2--6mm.
Preferably, in described step S5, after bearing upper steel plate has adjusted, the gap between at the bottom of upper steel plate and fine strain of millet is entered
Row grouting, fills closely knit by gap, and wherein grouting uses M60 contraction-free grouting concrete.
Compared with prior art, the invention has the beneficial effects as follows: the present invention will during replacing or mounting bridge beam support
Bearing is whole with the first chipping of the contact surface at the bottom of fine strain of millet, and smears cement mortar and install horizontal steel plate, utilizes level indicator accurately to control
Its levelness, extends the service life of bearing, and ensures that the overall structure of bridge is stable, and its leveling method is simple and reliable, quick
Convenient, it is suitable for during bridge pad leveling promoting the use of.
Accompanying drawing explanation
Fig. 1 is workflow diagram of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Embodiment one
A kind of Bridge Support Replacement and newly installed time leveling method, install including preparation of construction, jack, overall top
Liter, classification jacking, change with leveling and the fine strain of millet step that falls, described Bridge Support Replacement and newly installed time leveling method, specifically walk
Rapid as follows:
S1: preparation of construction: erection construction operating platform simple rack, clears up bridge pier, countertop foreign body, and carries out theoretical meter
Calculate, determine the once safety jacking amount of each bearing reaction size and buttress；
S2: jack is installed: use ultrathin synchronous hydra-ulic jacks to be placed on centrage at the bottom of fine strain of millet, ultrathin synchronization liquid
Pressure jack top is away from concrete edge 10cm, and installs oil gauge and displacement transducer, ultrathin synchronous hydra-ulic jacks and fine strain of millet
Use pading plate mode to pad between bottom surface, pinner or bent cap, and keep each ultrathin synchronous hydra-ulic jacks pressure consistent,
Its jacking face and installed surface keep smooth, and ultrathin synchronous hydra-ulic jacks is near bearing, and in solid-section bottom at the bottom of fine strain of millet, displacement
Sensor is installed and is kept vertical, and its range is 0--50mm, and ultrathin synchronous hydra-ulic jacks selects external diameter 16cm, internal diameter 10cm,
Thickness 40mm, stroke 8mm, wherein, the piston seal of ultrathin synchronous hydra-ulic jacks is three road complex sealing rings；
S3: integral jacking: open pressure fuel pump and rise to 6MPa, and observe displacement transducer reading, during jack-up 2mm, oil pump
Stop pressurization, and stirrup is enclosed within ultrathin synchronous hydra-ulic jacks outer wall, in case jack decompression causes jack to fall after rise, its
Middle oil pump is controlled by Hydraulic Station entirety, and Hydraulic Station is made up of hydraulic manifold block, overflow valve, bidirectional electromagnetic valve, Pressure gauge and oil pipe,
Wherein tubing length 6m, is operated by the Integral synchronous of Hydraulic Station control oil pump, utilizes displacement transducer real-time monitored jacking amount；
S4: classification jacking: when the deadweight of fine strain of millet body is fully transferred on ultrathin synchronous hydra-ulic jacks, top lift no longer increases
Add, use classification jacking, each jacking 2mm, each buttress jacking amount difference 0.2mm, decommission after ejecting replacing gap；
S5: change and leveling: removed by the upper steel plate of bearing, requires contact surface chipping at the bottom of upper steel plate and fine strain of millet according to design
Whole, and carry out levelling with cement mortar and steel plate, the thickness of its screed-coat with do not change before the relative altitude of bearing front and rear beam
Unanimously, grafter or long-handled hook is used to be removed by former bearing after head space at the bottom of fine strain of millet, during removal bearing upper steel plate, with oils and fats cloth bag
Wrap the bottom of steel plate, and by the level of level indicator adjustment upper steel plate, reserve the decrement of 2mm, at bearing upper steel plate simultaneously
After adjustment completes, being in the milk the gap between at the bottom of upper steel plate and fine strain of millet, filled gap closely knit, wherein grouting uses M60
Contraction-free grouting concrete；
S6: fall fine strain of millet: after grouting material is strengthened 2 days, carry out falling fine strain of millet, to ensure each ultrathin synchronization during the fine strain of millet that falls
The once falling amount of hydraulic jack, and jack falling holding synchronization, to guarantee fine strain of millet body whole machine balancing, the fine strain of millet that falls is to physical location
Time, check bearing support situation.
Embodiment two
A kind of Bridge Support Replacement and newly installed time leveling method, install including preparation of construction, jack, overall top
Liter, classification jacking, change with leveling and the fine strain of millet step that falls, described Bridge Support Replacement and newly installed time leveling method, specifically walk
Rapid as follows:
S1: preparation of construction: erection construction operating platform simple rack, clears up bridge pier, countertop foreign body, and carries out theoretical meter
Calculate, determine the once safety jacking amount of each bearing reaction size and buttress；
S2: jack is installed: use ultrathin synchronous hydra-ulic jacks to be placed on centrage at the bottom of fine strain of millet, ultrathin synchronization liquid
Pressure jack top is away from concrete edge 12cm, and installs oil gauge and displacement transducer, ultrathin synchronous hydra-ulic jacks and fine strain of millet
Use pading plate mode to pad between bottom surface, pinner or bent cap, and keep each ultrathin synchronous hydra-ulic jacks pressure consistent,
Its jacking face and installed surface keep smooth, and ultrathin synchronous hydra-ulic jacks is near bearing, and in solid-section bottom at the bottom of fine strain of millet, displacement
Sensor is installed and is kept vertical, and its range is 0--50mm, and ultrathin synchronous hydra-ulic jacks selects external diameter 17cm, internal diameter 11cm,
Thickness 44mm, stroke 9mm, wherein, the piston seal of ultrathin synchronous hydra-ulic jacks is three road complex sealing rings；
S3: integral jacking: open pressure fuel pump and rise to 7MPa, and observe displacement transducer reading, during jack-up 3mm, oil pump
Stop pressurization, and stirrup is enclosed within ultrathin synchronous hydra-ulic jacks outer wall, in case jack decompression causes jack to fall after rise, its
Middle oil pump is controlled by Hydraulic Station entirety, and Hydraulic Station is made up of hydraulic manifold block, overflow valve, bidirectional electromagnetic valve, Pressure gauge and oil pipe,
Wherein tubing length 12m, is operated by the Integral synchronous of Hydraulic Station control oil pump, utilizes displacement transducer real-time monitored jacking amount；
S4: classification jacking: when the deadweight of fine strain of millet body is fully transferred on ultrathin synchronous hydra-ulic jacks, top lift no longer increases
Add, use classification jacking, each jacking 3mm, each buttress jacking amount difference 0.3mm, decommission after ejecting replacing gap；
S5: change and leveling: removed by the upper steel plate of bearing, requires contact surface chipping at the bottom of upper steel plate and fine strain of millet according to design
Whole, and carry out levelling with cement mortar and steel plate, the thickness of its screed-coat with do not change before the relative altitude of bearing front and rear beam
Unanimously, grafter or long-handled hook is used to be removed by former bearing after head space at the bottom of fine strain of millet, during removal bearing upper steel plate, with oils and fats cloth bag
Wrap the bottom of steel plate, and by the level of level indicator adjustment upper steel plate, reserve the decrement of 4mm, at bearing upper steel plate simultaneously
After adjustment completes, being in the milk the gap between at the bottom of upper steel plate and fine strain of millet, filled gap closely knit, wherein grouting uses M60
Contraction-free grouting concrete；
S6: fall fine strain of millet: after grouting material is strengthened 3 days, carry out falling fine strain of millet, to ensure each ultrathin synchronization during the fine strain of millet that falls
The once falling amount of hydraulic jack, and jack falling holding synchronization, to guarantee fine strain of millet body whole machine balancing, the fine strain of millet that falls is to physical location
Time, check bearing support situation.
Embodiment three
A kind of Bridge Support Replacement and newly installed time leveling method, install including preparation of construction, jack, overall top
Liter, classification jacking, change with leveling and the fine strain of millet step that falls, described Bridge Support Replacement and newly installed time leveling method, specifically walk
Rapid as follows:
S1: preparation of construction: erection construction operating platform simple rack, clears up bridge pier, countertop foreign body, and carries out theoretical meter
Calculate, determine the once safety jacking amount of each bearing reaction size and buttress；
S2: jack is installed: use ultrathin synchronous hydra-ulic jacks to be placed on centrage at the bottom of fine strain of millet, ultrathin synchronization liquid
Pressure jack top is away from concrete edge 15cm, and installs oil gauge and displacement transducer, ultrathin synchronous hydra-ulic jacks and fine strain of millet
Use pading plate mode to pad between bottom surface, pinner or bent cap, and keep each ultrathin synchronous hydra-ulic jacks pressure consistent,
Its jacking face and installed surface keep smooth, and ultrathin synchronous hydra-ulic jacks is near bearing, and in solid-section bottom at the bottom of fine strain of millet, displacement
Sensor is installed and is kept vertical, and its range is 0--50mm, and ultrathin synchronous hydra-ulic jacks selects external diameter 20cm, internal diameter 14cm,
Thickness 50mm, stroke 12mm, wherein, the piston seal of ultrathin synchronous hydra-ulic jacks is three road complex sealing rings；
S3: integral jacking: open pressure fuel pump and rise to 9MPa, and observe displacement transducer reading, during jack-up 5mm, oil pump
Stop pressurization, and stirrup is enclosed within ultrathin synchronous hydra-ulic jacks outer wall, in case jack decompression causes jack to fall after rise, its
Middle oil pump is controlled by Hydraulic Station entirety, and Hydraulic Station is made up of hydraulic manifold block, overflow valve, bidirectional electromagnetic valve, Pressure gauge and oil pipe,
Wherein tubing length 20m, is operated by the Integral synchronous of Hydraulic Station control oil pump, utilizes displacement transducer real-time monitored jacking amount；
S4: classification jacking: when the deadweight of fine strain of millet body is fully transferred on ultrathin synchronous hydra-ulic jacks, top lift no longer increases
Add, use classification jacking, each jacking 5mm, each buttress jacking amount difference 0.5mm, decommission after ejecting replacing gap；
S5: change and leveling: removed by the upper steel plate of bearing, requires contact surface chipping at the bottom of upper steel plate and fine strain of millet according to design
Whole, and carry out levelling with cement mortar and steel plate, the thickness of its screed-coat with do not change before the relative altitude of bearing front and rear beam
Unanimously, grafter or long-handled hook is used to be removed by former bearing after head space at the bottom of fine strain of millet, during removal bearing upper steel plate, with oils and fats cloth bag
Wrap the bottom of steel plate, and by the level of level indicator adjustment upper steel plate, reserve the decrement of 6mm, at bearing upper steel plate simultaneously
After adjustment completes, being in the milk the gap between at the bottom of upper steel plate and fine strain of millet, filled gap closely knit, wherein grouting uses M60
Contraction-free grouting concrete；
S6: fall fine strain of millet: after grouting material is strengthened 5 days, carry out falling fine strain of millet, to ensure each ultrathin synchronization during the fine strain of millet that falls
The once falling amount of hydraulic jack, and jack falling holding synchronization, to guarantee fine strain of millet body whole machine balancing, the fine strain of millet that falls is to physical location
Time, check bearing support situation.
Described in comprehensive above example, a kind of Bridge Support Replacement that the present invention provides and newly installed time leveling method
Most preferred embodiment is: a kind of Bridge Support Replacement and newly installed time leveling method, including preparation of construction, jack install, whole
Body jacking, classification jacking, change with leveling and the fine strain of millet step that falls, described Bridge Support Replacement and newly installed time leveling method, tool
Body step is as follows:
S1: preparation of construction: erection construction operating platform simple rack, clears up bridge pier, countertop foreign body, and carries out theoretical meter
Calculate, determine the once safety jacking amount of each bearing reaction size and buttress；
S2: jack is installed: use ultrathin synchronous hydra-ulic jacks to be placed on centrage at the bottom of fine strain of millet, ultrathin synchronization liquid
Pressure jack top is away from concrete edge 13cm, and installs oil gauge and displacement transducer, ultrathin synchronous hydra-ulic jacks and fine strain of millet
Use pading plate mode to pad between bottom surface, pinner or bent cap, and keep each ultrathin synchronous hydra-ulic jacks pressure consistent,
Its jacking face and installed surface keep smooth, and ultrathin synchronous hydra-ulic jacks is near bearing, and in solid-section bottom at the bottom of fine strain of millet, displacement
Sensor is installed and is kept vertical, and its range is 0--50mm, and ultrathin synchronous hydra-ulic jacks selects external diameter 18cm, internal diameter 13cm,
Thickness 48mm, stroke 10mm, wherein, the piston seal of ultrathin synchronous hydra-ulic jacks is three road complex sealing rings；
S3: integral jacking: open pressure fuel pump and rise to 8MPa, and observe displacement transducer reading, during jack-up 4mm, oil pump
Stop pressurization, and stirrup is enclosed within ultrathin synchronous hydra-ulic jacks outer wall, in case jack decompression causes jack to fall after rise, its
Middle oil pump is controlled by Hydraulic Station entirety, and Hydraulic Station is made up of hydraulic manifold block, overflow valve, bidirectional electromagnetic valve, Pressure gauge and oil pipe,
Wherein tubing length 16m, is operated by the Integral synchronous of Hydraulic Station control oil pump, utilizes displacement transducer real-time monitored jacking amount；
S4: classification jacking: when the deadweight of fine strain of millet body is fully transferred on ultrathin synchronous hydra-ulic jacks, top lift no longer increases
Add, use classification jacking, each jacking 4mm, each buttress jacking amount difference 0.4mm, decommission after ejecting replacing gap；
S5: change and leveling: removed by the upper steel plate of bearing, requires contact surface chipping at the bottom of upper steel plate and fine strain of millet according to design
Whole, and carry out levelling with cement mortar and steel plate, the thickness of its screed-coat with do not change before the relative altitude of bearing front and rear beam
Unanimously, grafter or long-handled hook is used to be removed by former bearing after head space at the bottom of fine strain of millet, during removal bearing upper steel plate, with oils and fats cloth bag
Wrap the bottom of steel plate, and by the level of level indicator adjustment upper steel plate, reserve the decrement of 5mm, at bearing upper steel plate simultaneously
After adjustment completes, being in the milk the gap between at the bottom of upper steel plate and fine strain of millet, filled gap closely knit, wherein grouting uses M60
Contraction-free grouting concrete；
S6: fall fine strain of millet: after grouting material is strengthened 4 days, carry out falling fine strain of millet, to ensure each ultrathin synchronization during the fine strain of millet that falls
The once falling amount of hydraulic jack, and jack falling holding synchronization, to guarantee fine strain of millet body whole machine balancing, the fine strain of millet that falls is to physical location
Time, check bearing support situation.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understand and these embodiments can be carried out multiple change without departing from the principles and spirit of the present invention, revise, replace
And modification, the scope of the present invention be defined by the appended.
Claims (7)
1. Bridge Support Replacement and newly installed time a leveling method, including preparation of construction, jack installation, integral jacking,
Classification jacking, change with leveling and the fine strain of millet step that falls, it is characterised in that: described Bridge Support Replacement and newly installed time leveling side
Method, specifically comprises the following steps that
S1: preparation of construction: erection construction operating platform simple rack, clears up bridge pier, countertop foreign body, and carries out Theoretical Calculation,
Determine the once safety jacking amount of each bearing reaction size and buttress；
S2: jack is installed: use ultrathin synchronous hydra-ulic jacks to be placed on centrage at the bottom of fine strain of millet, ultrathin synchronous hydraulic thousand
Top, jin top is away from concrete edge 10--15cm, and installs oil gauge and displacement transducer；
S3: integral jacking: open pressure fuel pump and rise to 6--9MPa, and observe displacement transducer reading, during jack-up 2--5mm, oil
Pump stops pressurization, and stirrup is enclosed within ultrathin synchronous hydra-ulic jacks outer wall, in case jack decompression causes jack to fall after rise,
Wherein oil pump is controlled by Hydraulic Station entirety；
S4: classification jacking: when the deadweight of fine strain of millet body is fully transferred on ultrathin synchronous hydra-ulic jacks, top lift is not further added by,
Use classification jacking, each jacking 2--5mm, each buttress jacking amount difference 0.2--0.5mm, after ejecting replacing gap, stop fortune
Make；
S5: change and leveling: removed the upper steel plate of bearing, requires whole for contact surface chipping at the bottom of upper steel plate and fine strain of millet according to design,
And carry out levelling with cement mortar and steel plate, the thickness of its screed-coat with do not change before the relative altitude one of bearing front and rear beam
Cause；
S6: fall fine strain of millet: after grouting material is strengthened 2--5 days, carry out falling fine strain of millet, to ensure each ultrathin synchronization during the fine strain of millet that falls
The once falling amount of hydraulic jack, and jack falling holding synchronization, to guarantee fine strain of millet body whole machine balancing, the fine strain of millet that falls is to physical location
Time, check bearing support situation.
A kind of Bridge Support Replacement the most according to claim 1 and newly installed time leveling method, it is characterised in that: described
In step S1, measure at the bottom of fine strain of millet to buttress and the distance of countertop so that it is distance controlling, at 3--6cm, as less than 3cm, then cuts pier
Concrete is divided at top, and floating by cement mortar.
A kind of Bridge Support Replacement the most according to claim 1 and newly installed time leveling method, it is characterised in that: described
In step S2, use pading plate mode to pad between ultrathin synchronous hydra-ulic jacks and fine strain of millet bottom surface, pinner or bent cap, and protect
Holding each ultrathin synchronous hydra-ulic jacks pressure consistent, its jacking face and installed surface keep smooth, ultrathin synchronous hydraulic thousand
Jin leans nearly bearing, and in solid-section bottom at the bottom of fine strain of millet, displacement transducer is installed and kept vertical, and its range is 0--50mm.
A kind of Bridge Support Replacement the most according to claim 1 and newly installed time leveling method, it is characterised in that: described
In step S2, ultrathin synchronous hydra-ulic jacks selects external diameter 16--20cm, internal diameter 10--14cm, thickness 40--50mm, stroke
8--12mm, wherein, the piston seal of ultrathin synchronous hydra-ulic jacks is three road complex sealing rings.
A kind of Bridge Support Replacement the most according to claim 1 and newly installed time leveling method, it is characterised in that: described
In step S3, Hydraulic Station is made up of hydraulic manifold block, overflow valve, bidirectional electromagnetic valve, Pressure gauge and oil pipe, wherein tubing length
6--20m, is operated by the Integral synchronous of Hydraulic Station control oil pump, utilizes displacement transducer real-time monitored jacking amount.
A kind of Bridge Support Replacement the most according to claim 1 and newly installed time leveling method, it is characterised in that: described
In step S5, use grafter or long-handled hook to be removed by former bearing after head space at the bottom of fine strain of millet, during removal bearing upper steel plate, use oils and fats
Cloth superscribes the bottom of steel plate, and by the level of level indicator adjustment upper steel plate, reserves the decrement of 2--6mm simultaneously.
A kind of Bridge Support Replacement the most according to claim 1 and newly installed time leveling method, it is characterised in that: described
In step S5, after bearing upper steel plate has adjusted, is in the milk in the gap between at the bottom of upper steel plate and fine strain of millet, gap is filled
Closely knit, wherein grouting uses M60 contraction-free grouting concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610983821.0A CN106320193A (en) | 2016-11-09 | 2016-11-09 | Method for leveling bridge support during replacement and new installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610983821.0A CN106320193A (en) | 2016-11-09 | 2016-11-09 | Method for leveling bridge support during replacement and new installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106320193A true CN106320193A (en) | 2017-01-11 |
Family
ID=57816296
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610983821.0A Pending CN106320193A (en) | 2016-11-09 | 2016-11-09 | Method for leveling bridge support during replacement and new installation |
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|---|---|
| CN (1) | CN106320193A (en) |
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| CN110158490A (en) * | 2019-06-04 | 2019-08-23 | 中铁九局集团第七工程有限公司 | Continuous beam synchronization of jacking up construction |
| CN110453594A (en) * | 2019-09-06 | 2019-11-15 | 郑州航空工业管理学院 | A kind of adjustable Bridge Support Replacement method of support force |
| CN110468725A (en) * | 2019-08-30 | 2019-11-19 | 中铁六局集团太原铁路建设有限公司 | Installation engineering method after swivel bridges abutment pier support |
| CN110983997A (en) * | 2019-12-24 | 2020-04-10 | 中铁十八局集团第四工程有限公司 | Replacing method for sticky steel glue fixing support in counter bore production |
| CN113026566A (en) * | 2021-03-23 | 2021-06-25 | 中铁一局集团第二工程有限公司 | Reverse hoisting system and method for dismantling Bailey beam support |
| CN113481882A (en) * | 2021-06-30 | 2021-10-08 | 重庆建工第三建设有限责任公司 | Bridge plate type rubber support and replacement construction method thereof |
| CN114197301A (en) * | 2021-12-30 | 2022-03-18 | 成都济通路桥科技有限公司 | Cluster adjusting method for height-adjusting force-measuring device based on force and displacement dual control |
| CN115030066A (en) * | 2022-06-22 | 2022-09-09 | 广东长大道路养护有限公司 | Reverse installation construction method for basin-type support of bridge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110158490A (en) * | 2019-06-04 | 2019-08-23 | 中铁九局集团第七工程有限公司 | Continuous beam synchronization of jacking up construction |
| CN110468725A (en) * | 2019-08-30 | 2019-11-19 | 中铁六局集团太原铁路建设有限公司 | Installation engineering method after swivel bridges abutment pier support |
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| CN110983997A (en) * | 2019-12-24 | 2020-04-10 | 中铁十八局集团第四工程有限公司 | Replacing method for sticky steel glue fixing support in counter bore production |
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| CN113026566A (en) * | 2021-03-23 | 2021-06-25 | 中铁一局集团第二工程有限公司 | Reverse hoisting system and method for dismantling Bailey beam support |
| CN113481882A (en) * | 2021-06-30 | 2021-10-08 | 重庆建工第三建设有限责任公司 | Bridge plate type rubber support and replacement construction method thereof |
| CN114197301A (en) * | 2021-12-30 | 2022-03-18 | 成都济通路桥科技有限公司 | Cluster adjusting method for height-adjusting force-measuring device based on force and displacement dual control |
| CN115030066A (en) * | 2022-06-22 | 2022-09-09 | 广东长大道路养护有限公司 | Reverse installation construction method for basin-type support of bridge |
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