CN110117935A - Bridge temporary support blocks and its installation method - Google Patents
Bridge temporary support blocks and its installation method Download PDFInfo
- Publication number
- CN110117935A CN110117935A CN201910454063.7A CN201910454063A CN110117935A CN 110117935 A CN110117935 A CN 110117935A CN 201910454063 A CN201910454063 A CN 201910454063A CN 110117935 A CN110117935 A CN 110117935A
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- module
- plate
- base
- groups
- temporary support
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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
Abstract
The present invention provides a kind of bridge temporary support blocks and its installation methods, including base-plate, two groups of limit modules and carrier module, limit module symmetry described in two groups is set on the base-plate, the carrier module is set in the limit module, and limit module described in two groups can relatively or contrarily move so that the vertical height between the carrier module and the base-plate increases or reduces on the base-plate surface.When supporting beam body, the temporary support blocks are installed according to the installation method, limit module relative motion described in two groups makes the vertical height between the carrier module and the base-plate increase to predetermined altitude.When off-load, limit module described in two groups reduces the carrier module to remove the temporary support blocks to the height of the base-plate towards opposite direction is mobile, has low cost, installation is simple, and supporting structure is stablized, the advantages that can be recycled.
Description
Technical field
The present invention relates to continuous bridge erection technique field more particularly to a kind of bridge temporary support blocks and its installation sides
Method.
Background technique
With the rapid development of bridge construction, there is a kind of novel beam bridge structure-simple-supported thencontinuous in the country in recent years
The advantages of beam bridge, it has taken into account simply supported girder bridge and continuous bridge, has big, small, easy for construction, short time limit of deformation of rigidity etc. excellent
Point, played an important role in bridge construction.
The design and construction of bridge temporary support blocks is the important link during simple supported-to-continuous girder bridge is set up, and is applied at present
It includes sand box temporary support or sulphur-bonded mortar temporary support etc. that temporary support blocks are generallyd use in work, and sand box temporary support is not easy
Off-load, height of support control is difficult, and the cost of sulphur-bonded mortar temporary support is higher, processing difficulties, not can be carried out and is used in turn,
Environmental pollution is larger.
Summary of the invention
The purpose of the present invention is to provide a kind of bridge temporary support blocks and its installation methods, have low cost, bearing
Stable structure, easy to operate, the advantages that can be recycled.
In order to achieve the above object, the present invention provides a kind of bridge temporary support blocks, including base-plate, two groups of limits
Position module and carrier module, limit module symmetry described in two groups are set on the base-plate, and the carrier module is set to
In the limit module, limit module described in two groups can relatively or contrarily move so that described hold on the base-plate surface
The vertical height carried between module and the base-plate increases or reduces.
Optionally, groove profile pedestal is installed on the base-plate, is provided with a groove profile pedestal on the base-plate, two
The center symmetric setting of the group limit relatively described groove profile pedestal of module is on the groove profile pedestal and can be in the groove profile
It is relatively or contrarily moved on pedestal.
Optionally, the position-limiting unit that the limit module includes mobile unit and connect with the mobile unit, the shifting
Moving cell is set on the groove profile pedestal, and the position-limiting unit drives the mobile unit to move on the groove profile pedestal.
Optionally, the mobile unit includes wedge block, and the scarf of the wedge block deviates from the groove profile pedestal and institute
The vertical height for stating wedge block is gradually reduced from the groove profile base edge to groove profile base center direction.
Optionally, the scarf of the wedge block and the angle of the plane where the groove profile pedestal are greater than or equal to 20
Degree.
Optionally, the position-limiting unit includes several elevation adjustment bolts, and the head of the elevation adjustment bolt is installed on
On the groove profile pedestal, the screw rod tail of the elevation adjustment bolt is connect with the mobile unit.
Optionally, the carrier module includes fixed block and several steel plates, and the fixed block is set to the limit module
The shape of the upper and described fixed block and the contact surface of the limit module matches, and several steel plates are detachably arranged in institute
It states on fixed block.
Based on this, the present invention also provides a kind of installation methods of bridge temporary support blocks, comprising the following steps:
In a setting position erection support bottom plate；
Two groups of limit modules are symmetrically installed on the base-plate；
When carrier module being set in the limit module described in two groups, and making the carrier module stress, limited described in two groups
Module can relatively or contrarily move on the base-plate；
By the position of limit module described in two groups of adjusting to adjust between the carrier module and the base-plate
Vertical height.
Optionally, two groups are symmetrically installed on the base-plate described in limit module before, the base-plate with
Lubricating grease is smeared on the contact surface of the limit module；And be arranged in the limit module described in two groups the carrier module it
Before, lubricating grease is smeared in the contact surface of the limit module and the carrier module to reduce the coefficient of friction of the contact surface.
Optionally, the position of limit module described in two groups of synchronous adjustment is to adjust the carrier module and the base-plate
Between vertical height.
The present invention provides a kind of bridge temporary support blocks and its installation method, the bridge temporary support blocks are being propped up
Before supportting beam body, the temporary support blocks are installed according to the installation method, limit module relative motion described in two groups makes described
Vertical height between carrier module and the base-plate increases to predetermined altitude.When supporting beam body, the carrier module
The gravity of the beam body is spread to module is limited described in two groups, make two groups described in limit module generate outside sliding respectively
Power, the limit module friction mechanical resistance opposite with the skid force with generation between the carrier module and the base-plate
The only sliding of the limit module, so that the carrier module supports the beam body.When off-load, module phase is limited described in two groups
The mobile vertical height made between the carrier module and the base-plate of back reduces to remove the temporary support blocks.Cause
This, bridge temporary support blocks provided by the invention have low cost, and installation is simple, and supporting structure is stablized, and can be recycled
Advantage.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of bridge temporary support blocks provided in an embodiment of the present invention；
Fig. 2 is the cross-section diagram splitted in Fig. 1 of the embodiment of the present invention along the direction A-A；
Fig. 3 is the force analysis figure of bridge temporary support blocks provided in an embodiment of the present invention；
Fig. 4 is the force analysis figure of wedge block in the embodiment of the present invention；
Wherein, appended drawing reference are as follows:
11- groove profile pedestal；31- fixed block；32- steel plate；
1- base-plate；2- wedge block；3- carrier module；4- elevation adjustment bolt；5- beam body；6- pinner；
φ: the scarf of wedge block and the angle of horizontal plane；
μ: the frictional force between steel and steel, generally 0.15, grease-added is 0.1；
G: gravity suffered by supporting arrangement；
G1: the vertical force that the scarf of wedge block is subject to；
G1h: the vertical direction component of vertical force suffered by the scarf of wedge block；
G1s: the horizontal direction component of vertical force suffered by the scarf of wedge block；
T: the horizontal thrust of each elevation adjustment bolt；
M1: the frictional force between the scarf and carrier module of wedge block；
M1s: the horizontal direction component of the frictional force between the scarf and carrier module of wedge block；
M1h: the vertical direction component of the frictional force between the scarf and carrier module of wedge block；
M2: the frictional force between wedge block and base-plate.
Specific embodiment
A specific embodiment of the invention is described in more detail below in conjunction with schematic diagram.According to following description,
Advantages and features of the invention will become apparent from.It should be noted that attached drawing is all made of very simplified form and using non-accurate
Ratio, only for the purpose of facilitating and clarifying the purpose of the embodiments of the invention.
As depicted in figs. 1 and 2, a kind of bridge temporary support blocks are present embodiments provided, it is described for carrying beam body 5
Beam body includes T beam, box beam or plate-girder, and the weight of the beam body can control the i.e. described bridge between 100KN-4000KN and face
When supporting arrangement bearing capacity can be 100KN-4000KN.
The bridge temporary support blocks include 1, two group of limit module of base-plate and carrier module 3, the support bottom
Plate 1 is set on pinner 6 to prevent Uneven road, and two groups of limit module symmetries are arranged on the base-plate 1, described
Carrier module 3 is set in the limit module, and the limit module can move on 1 surface of base-plate, and two groups
The limit module can be relatively or contrarily moved on 1 surface of base-plate so that the carrier module 3 and the support
Vertical height between bottom plate 1 increases or reduces.When supporting beam body 5, the carrier module 3 expands the gravity of the beam body 5
Dissipate to the limit module, the limit module made to generate outside skid force, the limit module and the carrier module 3 and
The sliding that the frictional force opposite with the skid force prevents the limit module is generated between the base-plate 1, so that described
Carrier module supports the beam body.When off-load, limit module back movement movement described in two groups makes the carrier module 3 to institute
The height for stating base-plate 1 reduces to remove the temporary support blocks.
Further, it is provided with groove profile pedestal 11 on the base-plate, the relatively described groove profile bottom of module is limited described in two groups
The center symmetric setting of seat on the groove profile pedestal 11 in can move on the groove profile pedestal and relatively or contrarily.This reality
It applies in example, base-plate uses the hot rolled steel plate of smooth surface, and base-plate surrounding is welded general steel plate to surround head and the tail
The groove profile pedestal 11 of connected cuboid, steel plate and bottom plate welding use two-sided welding, it is ensured that firm welding, the groove profile bottom
Connection between 11 adjacent steel plates of seat equally can be with two-sided welding.
Further, the mobile unit includes wedge block 2, and limit module described in two groups respectively includes a wedge block 2；Two
The center symmetric setting of the relatively described groove profile pedestal 11 of a wedge block 2 is on the groove profile pedestal 11 and can be in the slot
It is relatively or contrarily moved on type pedestal 11, also, the scarf of the wedge block 2 deviates from the groove profile pedestal 11 and the wedge shape
The vertical height of block 2 is gradually reduced from the groove profile base edge to groove profile base center direction.It is described in the present embodiment
Wedge block 2 is processed using hot rolled steel plate, an angle of the wedge block 2 is prescinded by finishing, so that wedge block 2 is oblique
The angle of section and horizontal plane is 20 ° or more.
The position-limiting unit includes several elevation adjustment bolts 4, and in the present embodiment, bridge temporary support blocks one share four
A elevation adjustment bolt 4, each position-limiting unit include two elevation adjustment bolts 4, and the elevation adjustment bolt 4 is installed on
On the groove profile pedestal 11, the head of the elevation adjustment bolt 4 is installed on the groove profile pedestal 11, and the elevation adjusts spiral shell
The screw rod tail of bolt 4 is connect with the wedge block 2, and each wedge block 2 adjusts bolt 4 by two elevations and limited, and passes through tune
It saves the elevation adjustment bolt 4 and is relatively or contrarily moved with adjusting the wedge block 2, to adjust bridge temporary support blocks
Highly.
The scarf of the wedge block 2 and the angle of horizontal plane are greater than or equal to 20 degree, because passing through Calculation and Analysis of Force
The scarf of wedge block 2 and the angle of the horizontal plane wedge block 2 and the carrier module 3 and the support when being 11.31 °
Frictional force is generated between bottom plate 1 is equal to the skid force that the wedge block 2 is subject to, but in actual operation, to ensure wedge block 2
It can slide outward, the included angle of scarf and horizontal plane uses 20 ° or more.Such as Fig. 3 and Fig. 4, specific force analysis is as follows:
Gravity G=G1h+G2h suffered by supporting arrangement, wherein G1h and G2h is respectively the scarf institute of two wedge blocks 2
By the vertical direction component of vertical force, because two wedge blocks are symmetrical arranged, then G1h=1/2G；
The vertical force that the scarf of wedge block 2 is subject to
The then horizontal direction component of vertical force suffered by the scarf of wedge block 2 are as follows:
The frictional force between the scarf of wedge block 2 and carrier module 3 can be obtained according to friction formula
M1=G1* μ；
The then horizontal direction component of the frictional force between the scarf of wedge block 2 and carrier module 3；
Frictional force M2=G1h* μ=1/2G* μ between wedge block 2 and base-plate 1；
If the horizontal thrust that each elevation adjusts bolt 4 is T, due to each wedge block 2 by two elevations adjust bolts 4 into
Row limit, then
Then T=G/2 (1/2tan φ-μ)；
Wherein:
φ: the inclined-plane of wedge block 2 and the angle of horizontal plane；
μ: the frictional force between steel and steel, generally 0.15, grease-added is 0.1；
(if 1/2tan φ-μ) < 0, due to being generated between wedge block 2 and the carrier module 3 and the base-plate 1
Frictional force is excessive, and temporary support blocks can not unload, and loses the effect of temporary support.
Scarf critical angle is proved below:
Interface is smooth between steel plate, to reduce coefficient of friction, lubricating grease is smeared between steel plate, if coefficient of friction between steel plate
It is 0.1, then φ is calculated as follows:
WhenWhen, it generates and rubs between the wedge block 2 and the carrier module 3 and the base-plate 1
It wipes power and is equal to the skid force that the wedge block 2 is subject to, thenφ=0.2 tan can obtain φ=11.31 °, practical
In operation, to ensure that wedge block 2 can slide outward, the included angle of scarf and horizontal plane uses 20 ° or more.
When φ uses 20 °, and when scarf coating lubricating oil, coefficient of friction is based on 0.1, then the numerical value of T are as follows:If bridge temporary support blocks stress is 50 tons, each high
It is only 2.05 tons that journey, which adjusts 4 stress of bolt, therefore, in order to ensure that wedge block 2 can slide outward, the scarf and water of the wedge block 2
The angle of plane uses 20 ° or more, and in actual use, since contact surface friction coefficient is larger, contact surface smears lubricating grease
After can reduce coefficient of friction, when force analysis of the present invention coefficient of friction by 0.1 control, therefore first it is ensured that wedge block 2 with hold
The machining accuracy of module 3 is carried, as far as possible reduction coefficient of friction.If coefficient of friction can not be reduced due to machining accuracy, Ying Cai
Take the measure for improving the angle of scarf and horizontal plane, it is ensured that 2 outward thrust of wedge block is greater than the frictional resistance being subject to.
In the present embodiment, the bridge temporary support blocks maximum vertical stroke can be 1~30mm, due to each elevation
It is smaller to adjust 4 horizontal thrust of bolt, generally uses model M16, strength grade for 8.8 grades or more of bolt, the model bolt
Yield strength be 100KN or more, bolt length can buy according to requirements, nut specification and bolt matching, to meet not
The requirement of same level thrust, each adjusting bolt can mating single or two nuts according to requirements.
In the present embodiment, the carrier module 3 includes fixed block 31 and several steel plates 32, and the fixed block 31 is set to institute
State on wedge block 2 and the fixed block 31 and the shape of the contact surface of the wedge block 2 match, i.e., the described fixed block 31 it is oblique
The angle of section and horizontal plane is 20 ° or more, and consistent with the angle of horizontal plane with 2 scarf of wedge block, and mating must be made
With.The steel plate 32 is detachably arranged on the fixed block 31, and the quantity by increasing or decreasing the steel plate 32 can be with
Increase or reduce the carrier module to the base-plate height.
In the present embodiment, the fixed block 31 is processed using hot rolled steel plate, and processing request is consistent with wedge block 2, into
One step can excavate the steel plate of a part of thickness in the centre of the fixed block 31, mitigate the weight of fixed block 31, be convenient for bridge
The installation of temporary support blocks,
In the present embodiment, 32 size of steel plate and base-plate 1 are in the same size, and surfacing, can spread fixed block
The active force of 31 pairs of beam bodies 5, thickness 10mm or more can select monolithic or plurality of steel plates according to the requirement of height of support.
In the present embodiment, bridge temporary support blocks are under the vertical gravity of beam body 5, and load bearing unit 32 is by suffered vertical force
It is conveyed to fixed block 31, and counter-force of the fixed block 31 to beam body 5 is diffused, reduces the destruction because concentrating stress to beam body 5；
Fixed block 31 generates thrust and downward vertical force horizontally outward to wedge block 2；Wedge block 2 and fixed block 31 and base-plate 1
Between generate inside frictional force, prevent wedge block 2 from sliding outward；Thrust is greater than wedge block 2 horizontally outward suffered by wedge block 2
With the frictional force between fixed block 31 and base-plate 1, and the difference of horizontal force and frictional force be not easy be greater than elevation adjust bolt 4
Endurance；Make two pieces of 2 back movements of wedge block by adjusting elevation adjusting bolt 4, to reduce bridge temporary support
The height of device removes the bridge temporary support blocks.
Based on this, the present embodiment also provides a kind of installation method of bridge temporary support blocks, comprising the following steps:
In a setting position erection support bottom plate 1；
Two groups of limit modules are symmetrically installed on the base-plate；
When carrier module 3 being set in the limit module described in two groups, and making 3 stress of carrier module, limited described in two groups
Position module can relatively or contrarily move on the base-plate 1；
By the position of limit module described in two groups of adjusting to adjust between the carrier module 3 and the base-plate
Vertical height.
In the present embodiment, every group of limit module includes a wedge block 2 and two elevation adjustment bolts 4, and carrier module 3 wraps
Fixed block 31 and several steel plates 32 are included, the elevation adjustment bolt 4 limits wedge block 2, and 2 position of wedge block is answered when installation
Installation is accurate, it is ensured that the wedge block 2 is installed with the central symmetry of bearing plate 1, and according to the height and beveling of supporting arrangement
The angle calcu-lation installation site in face and horizontal plane, it is ensured that fixed block 31 contacts smooth with wedge block 2, reduces multiple elevations adjustment spiral shells
4 stress concentration phenomenon of bolt.
The position that bolt 4 finely tunes wedge block is adjusted by adjusting each elevation, all elevations adjust bolt 4 and want same stepping
Row is adjusted, to adjust the mounting height of temporary support blocks, and measures the screw-in length that each elevation adjusts bolt 4, it is ensured that
The stress that each elevation adjusts bolt is consistent.
Further, be symmetrically installed two groups on the base-plate 1 described in limit module before, in the base-plate 1
Lubricating grease is smeared on the contact surface of the limit module；And the carrier module 3 is set in the limit module described in two groups
Before, lubricating grease is smeared to reduce the friction system of the contact surface in the contact surface of the limit module and the carrier module 3
Number.
Further, the position of limit module described in two groups of synchronous adjustment is to adjust the carrier module 3 and the support bottom
Vertical height between plate 1.
After the completion of the construction of bridge temporary support blocks, adjusts elevation and adjust bolt 4, make two wedge blocks 2 towards opposite
Direction is mobile, the height of the bridge temporary support blocks is reduced, to remove the bridge temporary support blocks.
The all steel of material used in the present embodiment, all artificial ease of Use of mode of operation, since material is without pressure
Contracting, the features such as strength of materials is high, the high stability of temporary support after installation, and all using steel, with low cost, support
The features such as stable structure, height adjustment facilitate, can be recycled for multiple times, environmental protection, simple structure.
The above is only a preferred embodiment of the present invention, does not play the role of any restrictions to the present invention.Belonging to any
Those skilled in the art, in the range of not departing from technical solution of the present invention, to the invention discloses technical solution and
Technology contents make the variation such as any type of equivalent replacement or modification, belong to the content without departing from technical solution of the present invention, still
Within belonging to the scope of protection of the present invention.
Claims (10)
1. a kind of bridge temporary support blocks, which is characterized in that including base-plate, two groups of limit modules and carrier module, two
The group limit module symmetry is set on the base-plate, and the carrier module is set in the limit module, and two groups
The limit module can be relatively or contrarily moved on the base-plate surface so that the carrier module and the support bottom
Vertical height between plate increases or reduces.
2. bridge temporary support blocks as described in claim 1, which is characterized in that be provided with a groove profile on the base-plate
Pedestal limits the center symmetric setting of the relatively described groove profile pedestal of module on the groove profile pedestal and can be in institute described in two groups
It states and is relatively or contrarily moved on groove profile pedestal.
3. bridge temporary support blocks as claimed in claim 2, which is characterized in that the limit module include mobile unit and
The position-limiting unit connecting with the mobile unit, the mobile unit are set on the groove profile pedestal, and the position-limiting unit drives
The mobile unit is moved to move on the groove profile pedestal.
4. bridge temporary support blocks as claimed in claim 3, which is characterized in that the mobile unit includes wedge block, institute
The scarf of wedge block is stated away from the vertical height of the groove profile pedestal and the wedge block from the groove profile base edge to institute
Groove profile base center direction is stated to be gradually reduced.
5. bridge temporary support blocks as claimed in claim 4, which is characterized in that the scarf of the wedge block and the slot
The angle of plane where type pedestal is greater than or equal to 20 degree.
6. bridge temporary support blocks as claimed in claim 3, which is characterized in that the position-limiting unit includes several elevation tune
Whole bolt, the head of the elevation adjustment bolt are installed on the groove profile pedestal, the screw rod tail of the elevation adjustment bolt
It is connect with the mobile unit.
7. bridge temporary support blocks as described in claim 1, which is characterized in that if the carrier module include fixed block and
Dry steel plate, the fixed block is set in the limit module and the shape of the fixed block and the contact surface of the limit module
Match, several steel plates are detachably arranged on the fixed block.
8. a kind of installation method of such as bridge temporary support blocks of any of claims 1-7, which is characterized in that packet
Include following steps:
In a setting position erection support bottom plate；
Two groups of limit modules are symmetrically installed on the base-plate；
When carrier module being set in the limit module described in two groups, and making the carrier module stress, module is limited described in two groups
It can relatively or contrarily be moved on the base-plate；
Position by limit module described in two groups of adjusting is vertical between the carrier module and the base-plate to adjust
Highly.
9. the installation method of bridge temporary support blocks as claimed in claim 8, which is characterized in that on the base-plate
Before limit module described in being symmetrically installed two groups, smears and lubricate on the base-plate and the contact surface of the limit module
Rouge；And before in the limit module described in two groups the carrier module being arranged, in the limit module and the carrier module
Contact surface smear lubricating grease to reduce the coefficient of friction of the contact surface.
10. the installation method of bridge temporary support blocks as claimed in claim 8, which is characterized in that be adjusted in synchronism two groups of institutes
The position of limit module is stated to adjust the vertical height between the carrier module and the base-plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910454063.7A CN110117935A (en) | 2019-05-28 | 2019-05-28 | Bridge temporary support blocks and its installation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910454063.7A CN110117935A (en) | 2019-05-28 | 2019-05-28 | Bridge temporary support blocks and its installation method |
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ID=67523454
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| CN113062225B (en) * | 2021-03-30 | 2023-02-28 | 山东高速工程建设集团有限公司 | Temporary supporting device and method for improving stability of mounting and positioning precision of T-shaped beam |
| CN114047071A (en) * | 2021-11-22 | 2022-02-15 | 中国船舶科学研究中心 | Parallel fatigue test device based on structure test platform |
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