CN105735149A - Bridge jacking counter-force device suitable for narrow and small space between beam bottom and cover beam - Google Patents
Bridge jacking counter-force device suitable for narrow and small space between beam bottom and cover beam Download PDFInfo
- Publication number
- CN105735149A CN105735149A CN201610121102.8A CN201610121102A CN105735149A CN 105735149 A CN105735149 A CN 105735149A CN 201610121102 A CN201610121102 A CN 201610121102A CN 105735149 A CN105735149 A CN 105735149A
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- Prior art keywords
- bent cap
- small space
- bridge jacking
- bridge
- platform structure
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
Abstract
The invention discloses a bridge jacking counter-force device suitable for a narrow and small space between a beam bottom and a cover beam. The counter-force device comprises two bearing cross beams transversely penetrating the position above the cover beam, platform structures installed on the two sides of the bearing cross beams, high-strength bolt hoops used for connecting the bearing cross beams with the platform structures and a hooping device used for fixing the whole device and the cover beam. The two bearing cross beams transversely penetrate a narrow and small gap between a beam board and the cover beam. The bearing cross beams are reliably connected with the platform structures through the high-strength bolt hoops. The whole counter-force device is reliably connected with the cover beam through the hooping device. Bridge jacking operation can be conducted once jacks are placed on the platforms on the two sides. The bridge jacking counter-force device has the beneficial effects that the device is low in dead weight, high in bearing capacity and wide in application range; and the device is applied to hollow board bridge jacking in the narrow and small space between the beam bottom and the cover beam so that a large amount of manpower and a large number of material resources can be saved.
Description
Technical field
The present invention relates to Bridge repair and reinforcement field, it particularly relates to a kind of suitable in the bridge jacking counterforce device of small space at the bottom of beam and between bent cap.
Technical background
Bridge jacking is one procedure relatively conventional in Bridge repair and reinforcement construction.The blank board bridge that domestic early stage builds, has the advantages that the space between beam slab and bent cap is less.Such bridge is when lifting operation, jack cannot be directly placed in space between its beam slab and bent cap, domestic comparatively conventional method has two kinds at present: common method one, from setting up steel construction lifting platform at the bottom of bridge from bottom to up, then jack is placed on the steel structure platform set up and carries out bridge jacking operation.There is following drawback in this kind of method, (1) steel structure platform erection construction is larger, and economy is reported to the leadship after accomplishing a task；(2) need to again building basic platform basis for general pile-column bridge pier, the duration is longer；(3) limited by bridge height, when pier height is higher, it is difficult to ensure that the stability of steel construction lifting platform and safety；(4) being crossed over thing by bridge and affect relatively big, when under bridge being river or road, setting up of steel construction lifting platform is subjected to bigger restriction.Common method two, installs steel corbel on bent cap, and this kind of method need to implant reinforcing bar on bent cap, and bent cap causes a degree of damage, is not a kind of best practice.
Therefore, for the bridge that space between beam slab and bent cap is less, how producing one and easy for installation, the jacking apparatus again bent cap not damaged is particularly important in bridge jacking operation.
Summary of the invention
Present invention aim to address the deficiency of existing highway bridge jacking scheme, it is provided that a kind of be applicable at the bottom of beam and small space between bent cap, bearing capacity is strong, can assemble, install, the bridge jacking counterforce device of convenient transportation.This device is applicable at the bottom of beam and between bent cap, space is the bridge of more than 50mm, can bear spanning after having assembled is the blank board bridge being not more than 20m load under normal operating condition, set of device gross weight is about 150kg, wherein single component maximum weight is about 40kg, generally two workmans coordinate the installation getting final product finishing device, assembling does not need large-scale auxiliary equipment, and labor quality is less demanding.
For solving the problems referred to above, the present invention provides a kind of suitable in the bridge jacking counterforce device of small space at the bottom of beam and between bent cap, and described counterforce device includes crossing two load crossbeams on bent cap, is installed on the platform structure of load crossbeam both sides, for connecting the high-strength bolt cuff of load crossbeam and platform structure, holding device tightly for what fix whole device and bent cap.It is characterized in that available small gap between beam slab and bent cap crosses described two load crossbeams as support, described load crossbeam is reliably connected by high-strength bolt cuff and platform structure, described whole counterforce device is reliably connected with bent cap by holding device tightly, and jack is placed on the platform of described both sides and just can carry out bridge jacking operation.
Above-mentioned suitable at the bottom of beam and between bent cap the bridge jacking counterforce device of small space, it is Q345c steel that described load crossbeam is preferably material, cross section height 30mm, cross section width 50mm, the rod iron of long 2500mm.
Above-mentioned suitable at the bottom of beam and between bent cap the bridge jacking counterforce device of small space, described platform structure is preferably and is made up of upper triangle component, platform steel plate, lower triangle component.
Above-mentioned suitable at the bottom of beam and between bent cap the bridge jacking counterforce device of small space, described upper triangle component preferably by a piece of thick 30mm, upper bottom side length 40mm, the length of side 190mm that goes to the bottom, high 110mm trapezoidal steel plate cut away the gable of middle 72.8mm*99.3mm and form, form montant part width 40mm, brace part width 30mm, namely its main purpose for ensure that the conventional jack height of its size and bridge is wanted to adapt to, ensure structural-load-carrying capacity again, also to alleviate construction weight to the full extent, to facilitate manual operation to install.
Above-mentioned suitable at the bottom of beam and between bent cap the bridge jacking counterforce device of small space, described lower triangle component preferably by a piece of thick 25mm, upper bottom side length 190mm, the length of side 40mm that goes to the bottom, high 150mm trapezoidal steel plate cut away the gable of middle 107.6mm*107.6mm and form, form montant part width 40mm, brace part width 30mm, namely its main purpose for ensure structural-load-carrying capacity, alleviate construction weight again to the full extent, to facilitate manual operation to install.
Above-mentioned suitable at the bottom of beam and between bent cap the bridge jacking counterforce device of small space, described platform steel plate preferably by a piece of thick 30mm, long 550mm, wide 200mm rectangular steel plates cut away both sides 148mm*50mm part and form, namely its main purpose for ensure structural-load-carrying capacity, alleviate construction weight again to the full extent, to facilitate manual operation to install.And punch in affiliated platform steel plate appropriate location, in order to connecting with affiliated load crossbeam, platform steel plate lower part is furnished with stiffening rib steel plate, and its purpose, for increasing affiliated platform structure rigidity, reduces corresponding device deformation at work.
Above-mentioned suitable at the bottom of beam and between bent cap the bridge jacking counterforce device of small space, described upper triangle component, platform steel plate, lower triangle are welded preferably by groove welding.
Above-mentioned suitable at the bottom of beam and between bent cap the bridge jacking counterforce device of small space, described high-strength bolt cuff is preferably by one piece of wide 50mm, steel plate and the high-strength bolt that two root length 200mm, nominal diameter are 20mm of thick 20mm form, described steel plate and high-strength bolt are welded preferably by penetrating weldering, described high-strength bolt cuff need to pass through quenching, temper, each cuff after treatment can bear the pulling force of 15 tons, and has better toughness.
Above-mentioned suitable at the bottom of beam and between bent cap the bridge jacking counterforce device of small space, described in hold device tightly and formed by being fixed on screw rod below the screw rod of described platform structure lower edge, cross sleeve pipe and bent cap.The preferred M8.8 level screw rod of screw rod below the screw rod of affiliated platform structure lower edge and bent cap, the preferred 20mm of screw rod nominal diameter.Described cross sleeve pipe preferably two root length 150mm, wall thickness is 8mm, and the square tubes soldering that the interior length of side is 22mm forms.
Above-mentioned it is applicable at the bottom of beam and between bent cap, the bridge jacking counterforce device of small space supports with bent cap for counter-force, by bridge ingehious design, whole device and bent cap are reliably connected, and the bearing capacity of component own is strong, can bear the jacking load under the blank board bridge normal operating condition within 20m.
Above-mentioned it is applicable at the bottom of beam and between bent cap, the bridge jacking counterforce device of small space supports with bent cap for counter-force, described single construction weight is maximum to be controlled within 40kg scope, two workmans are only needed to cooperate when can carry out in-site installation, and without large-scale auxiliary equipment.
Above-mentioned it is applicable at the bottom of beam and between bent cap, the bridge jacking counterforce device of small space supports with bent cap for counter-force, utilize the described anti-bending shear bearing capacity of load crossbeam, bent cap side that vertical frictional force and the horizontal supporting force of device are come the jack counter-force in shared bridge jacking process, without punching anchoring on bent cap, thus accelerating installation progress on the one hand, avoid the secondary damage to bent cap on the other hand.
In sum, by tectonic sieving and the reasonable mechanical pattern based on Structure Calculation cleverly in the present invention, the bridge jacking device of the present invention has the advantage that device deadweight is little, bearing capacity is high, widely applicable, can saving substantial amounts of man power and material applying in the jacking of small space blank board bridge at the bottom of beam and between bent cap, the present invention has good promotional value in bridge jacking.
Accompanying drawing explanation
Fig. 1 is front of the present invention scheme of installation.
Fig. 2 is A-A generalized section in Fig. 1.
Fig. 3 is described load crossbeam full-page proof schematic diagram.
Fig. 4 is described cuff high-strength bolt full-page proof schematic diagram.
Fig. 5 is described platform structure side schematic view.
Fig. 6 is C-C generalized section in Fig. 5.
Fig. 7 is B-B generalized section in Fig. 5.
Fig. 8 is D-D generalized section in Fig. 5.
Fig. 9 holds bulking block composition schematic diagram tightly described in being.
In figure: 1, intend jacking beam slab, 2, bent cap, 3, jack, 4, load crossbeam, 5, high-strength bolt cuff, 6, platform structure, 7 hold the vertical screw rod of device tightly, and 8, hold device cross sleeve pipe tightly, 9, hold device crossbeam screw rod tightly, 10, platform structure ribbed stiffener
Detailed description of the invention
Below in conjunction with Figure of description, the invention will be further described.
The present invention shown in a kind of Fig. 1～Fig. 9 is applicable at the bottom of beam and the bridge jacking counterforce device of small space between bent cap, this counterforce device includes crossing in bent cap 2 and the load crossbeam 4 intending jacking beam slab 1 gap, load crossbeam 4 is provided with platform structure 6 in bent cap both sides, both are reliably connected by special high-strength bolt cuff 5, hold the vertical screw rod 7 of device tightly and be connected to platform structure bottom by screwed hole, hold device vertical screw rod 7 other end tightly and hold device lateral screw rod tightly and 9 be reliably connected by holding device 8 tightly.Whole device is by using after being reliably connected with upper type and bent cap, and during use, jack 3 is positioned on platform structure 6, more safe and reliable for ensureing device, the easy lifting operation simultaneously of both sides jack 3.
Above-mentioned a kind of suitable in the manufacture method of the bridge jacking counterforce device of small space at the bottom of beam and between bent cap, specifically include following several respects:
(1) described load crossbeam 4, for convenience of buying, ensure again its bearing capacity simultaneously, the preferred Q345C steel of its material, its length can suitably be done big to improve its scope of application, its sectional dimension preferred 30mm (height) * 50mm (width), is computed, and this sectional dimension can bear the load that single span is not more than the blank board bridge normal operating condition of 20m under the premise not affecting replacing time space.
(2) described high-strength bolt cuff 5, is formed by cuff screw rod 11 piercing welding of one piece of cuff upper steel plate 10 and two certain lengths, needs to carry out to quench, temper after cuff welding fabrication, to ensure that cuff has enough load abilities and toughness.
(3) described platform structure 6 is upper triangle component 12, platform steel plate 13, lower triangle component 14 groove welding composition, its material selects Q345C steel, this component is the component that single construction weight is maximum in whole described counterforce device, its weight is directly connected to the ease of use of whole counterforce device, so the design of this component should be tried one's best on the basis of counter-force bearing capacity alleviates weight, to ensure its convenience for construction.Simultaneously for convenience of being connected with the described vertical screw rod of device of holding tightly, bottom lower triangle component 14, draw screwed hole.For ensureing bearing capacity and the non-deformability of platform steel plate 13, thereunder weld a number of ribbed stiffener 15.
(4) hold device described in tightly and held tightly the vertical screw rod 7 of device by two, two hold device cross sleeve pipe 8 tightly and one hold device crossbeam screw rod 9 tightly and form, vertical screw rod 7 is connected with described platform structure by drawing screwed hole bottom described lower triangle component 14, hold the vertical screw rod 7 of device tightly and hold device crossbeam screw rod 9 tightly and be connected by holding device cross sleeve pipe 8 tightly, holding device cross sleeve pipe 8 tightly and formed by the square tubes soldering of the two certain wall thickness of root length and certain length.
Claims (9)
1. be applicable at the bottom of beam and a bridge jacking counterforce device for small space between bent cap, described suitable in the two load crossbeams including with the bridge jacking counterforce device of small space between bent cap at the bottom of beam crossing on bent cap, be installed on the platform structure of load crossbeam both sides, for being connected the high-strength bolt cuff of load crossbeam and platform structure, holding device tightly for what fix whole device and bent cap.It is characterized in that available small gap between beam slab and bent cap crosses described two load crossbeams as support, described load crossbeam is reliably connected by high-strength bolt cuff and platform structure, described whole counterforce device is reliably connected with bent cap by holding device tightly, and jack is placed on the platform of described both sides and just can carry out bridge jacking operation.
2. according to claim 1 suitable in the bridge jacking counterforce device of small space at the bottom of beam and between bent cap, it is characterised in that: described load crossbeam material is Q345c steel；Described load section of beam height is 30mm, width 50mm, and length can be adjusted according to bent cap width；Described load crossbeam crosses small gap between beam slab and bent cap；Described platform structure is installed at described load crossbeam two ends.
3. according to claim 2 suitable in the bridge jacking counterforce device of small space at the bottom of beam and between bent cap, it is characterised in that: described platform structure is made up of upper triangle component, platform steel plate, lower triangle component；Described platform steel plate stiffening rib steel plate arranged below, to ensure platform rigidity；Described triangle component, platform steel plate, lower triangle component, stiffening rib steel plate form described platform structure by groove welding.
4. according to claim 1 suitable in the bridge jacking counterforce device of small space at the bottom of beam and between bent cap, it is characterized in that: described high-strength bolt cuff is made up of steel plate and the high-strength bolt that two root length 200mm, nominal diameter are 20mm of one piece of wide 50mm, thick 20mm；Described steel plate and high-strength bolt are formed by connecting by penetrating weldering；Described high-strength bolt cuff can bear the pulling force of 15 tons after quenching, temper, and has better toughness.
5. according to claim 1 suitable in the bridge jacking counterforce device of small space at the bottom of beam and between bent cap, it is characterised in that: described high-strength bolt cuff is installed on described load crossbeam bent cap root, thus the moment of flexure of bearing reducing load crossbeam is greatly reduced.
6. according to claim 1 suitable in the bridge jacking counterforce device of small space at the bottom of beam and between bent cap, it is characterised in that: described in hold device tightly and formed by being fixed on screw rod below the screw rod of described platform structure lower edge, cross sleeve pipe and bent cap；Screw rod and the described platform structure of described platform structure lower edge are threaded connection, so that whole device is easy to dismounting, easy to carry.
7. according to claim 6 suitable in the bridge jacking counterforce device of small space at the bottom of beam and between bent cap, it is characterised in that: described cross cuff is two root length 150mm, and wall thickness is 8mm, and the square tubes soldering that the interior length of side is 22mm forms.
8. according to claim 1 suitable in the bridge jacking counterforce device of small space at the bottom of beam and between bent cap, it is characterised in that: the heaviest single component of described device is described platform structure, and its Weight control is within 40kg.
9. according to claim 1 suitable in the bridge jacking counterforce device of small space at the bottom of beam and between bent cap, it is characterised in that: described device can bear single span and be not more than the beam slab under the blank board bridge normal operating condition of 20m and corresponding load weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610121102.8A CN105735149A (en) | 2016-03-04 | 2016-03-04 | Bridge jacking counter-force device suitable for narrow and small space between beam bottom and cover beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610121102.8A CN105735149A (en) | 2016-03-04 | 2016-03-04 | Bridge jacking counter-force device suitable for narrow and small space between beam bottom and cover beam |
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| CN105735149A true CN105735149A (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610121102.8A Pending CN105735149A (en) | 2016-03-04 | 2016-03-04 | Bridge jacking counter-force device suitable for narrow and small space between beam bottom and cover beam |
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| CN (1) | CN105735149A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106192771A (en) * | 2016-09-21 | 2016-12-07 | 中冶建工集团有限公司 | The steel truss support of a kind of pier cap beam construction and method for dismounting |
| CN106337369A (en) * | 2016-09-21 | 2017-01-18 | 中冶建工集团有限公司 | Steel-truss supporting method for construction of cap beam of pier |
| CN107386117A (en) * | 2017-07-26 | 2017-11-24 | 中交公局第二工程有限公司 | A kind of device of double rod iron method construction bridges bent caps |
| CN109024315A (en) * | 2018-09-04 | 2018-12-18 | 长江师范学院 | The bridge beam body lifting equipment being installed on bent cap |
| CN109056559A (en) * | 2018-09-04 | 2018-12-21 | 长江师范学院 | A kind of bridge beam body lifting method based on bent cap |
| CN112878194A (en) * | 2019-11-29 | 2021-06-01 | 比亚迪股份有限公司 | Adjusting and positioning device for bridge |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106192771A (en) * | 2016-09-21 | 2016-12-07 | 中冶建工集团有限公司 | The steel truss support of a kind of pier cap beam construction and method for dismounting |
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| CN106337369B (en) * | 2016-09-21 | 2018-05-22 | 中冶建工集团有限公司 | A kind of steel truss support method of pier cap beam construction |
| CN107386117A (en) * | 2017-07-26 | 2017-11-24 | 中交公局第二工程有限公司 | A kind of device of double rod iron method construction bridges bent caps |
| CN109024315A (en) * | 2018-09-04 | 2018-12-18 | 长江师范学院 | The bridge beam body lifting equipment being installed on bent cap |
| CN109056559A (en) * | 2018-09-04 | 2018-12-21 | 长江师范学院 | A kind of bridge beam body lifting method based on bent cap |
| CN112878194A (en) * | 2019-11-29 | 2021-06-01 | 比亚迪股份有限公司 | Adjusting and positioning device for bridge |
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Application publication date: 20160706 |
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