CN202000264U - Bridge body full framing construction preloading system - Google Patents

Bridge body full framing construction preloading system Download PDF

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Publication number
CN202000264U
CN202000264U CN 201120053594 CN201120053594U CN202000264U CN 202000264 U CN202000264 U CN 202000264U CN 201120053594 CN201120053594 CN 201120053594 CN 201120053594 U CN201120053594 U CN 201120053594U CN 202000264 U CN202000264 U CN 202000264U
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CN
China
Prior art keywords
full framing
distribution
bridge
hydraulic jack
pressing
Prior art date
Application number
CN 201120053594
Other languages
Chinese (zh)
Inventor
梁超
张宏斌
李彬
李波
杨真
Original Assignee
中铁四局集团第一工程有限公司
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Priority to CN 201120053594 priority Critical patent/CN202000264U/en
Application granted granted Critical
Publication of CN202000264U publication Critical patent/CN202000264U/en

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Abstract

The utility model discloses a bridge body full framing construction preloading system, which is characterized in that anchors are disposed right below a full framing for cast-in-situ bridge body construction, and a preloading unit consisting of a hydraulic jack and vertical tie bars is disposed between the full framing and the anchors. The bridge body full framing construction preloading system substitutes the existing preloading means using sand bags, steel bars or water tanks, so that the preloading method is simplified greatly, test cost is saved, and safety in the test process is improved effectively.

Description

The bridge beam body full framing pre-pressing system of constructing
Technical field
The utility model relates to a kind of apparatus structure of bridge construction construction, the pre-pressing system of the full framing that adopts when particularly a kind of bridge beam body is constructed.
Background technology
Full framing in the bridge beam body construction is set up stage by stage, and the segmentation precompressed.Reliability and its nonelastic deformation of elimination for the checking full framing, measure the practical distortion amount of full framing under different loads, so that in amount of deflection control, revise the shuttering absolute altitude, before full framing is set up the concreting that finishes, must carry out precompressed to full framing.Preloading method commonly used at present has sandbag method, reinforcing bar preloading and water tank method.Be on the soffit formwork of full framing, lifting sand pocket or preloading reinforcing bar, or one group of water tank of preloading progressively load, unload according to designing requirement subsequently, make it reach the purpose of eliminating nonelastic deformation, and the elastic deformation amount who measures full framing.But there is more problem in these conventional methods, mainly comprise: the preparation time of test is long, the loading difficulty is big, preloading is highly high, there is potential safety hazard in operation site, testing expenses have high input, in the test when pinpointing the problems discharge time long, security incident takes place easily.
The utility model content
The utility model is for avoiding above-mentioned existing in prior technology weak point, provides a kind of bridge beam body full framing pre-pressing system of constructing, in the hope of simplifying loading method, saving testing expenses, the safety that improves process of the test.
The utility model adopts following technical scheme for the technical solution problem:
The construct design feature of pre-pressing system of the utility model bridge beam body full framing is under the full framing of cast-in-place beam body construction the anchor ingot to be set, and the prepressing units that is made of hydraulic jack and vertical lacing wire is set between described full framing and anchor ingot.
The construct design feature of pre-pressing system of the utility model bridge beam body full framing also is:
Hydraulic jack in the described prepressing units is fixedly installed on the bed die of full framing, and the bottom of described vertical lacing wire is fixedly connected on the described anchor ingot, and the top of vertical lacing wire penetrates the axle center punching duct well of hydraulic jack and with fixed by nut.
Described prepressing units is one group, and one group of prepressing units according to the bottom width of beam body equidistantly and set in a row.
On the bed die of described full framing distribution beam is set, described hydraulic jack is fixedly installed on the distribution beam.
Described distribution beam be by along the beam axon to vertical distribution beam and the double-deck distribution beam structure that constitutes along the transverse distribution beam on the beam body width.
Described vertical distribution beam and transverse distribution beam are the back-to-back Two bors d's oeuveres channel-section steel that is welded to each other, and are reserved with the space greater than the diameter of vertical lacing wire between the Two bors d's oeuveres channel-section steel.
Between described hydraulic jack and transverse distribution beam billet is set, vertically distribution beam is between bed die and transverse distribution beam.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, the utility model can substitute the precompressed mode of the sand pocket, reinforcing bar or the water tank that use at present fully, and can effectively overcome various defectives in the pre existing laminated structure.
2, the utility model is realized loading and unloading with hydraulic jack, loads and uninstall process time weak point, simple to operate, does not need long time, tests easy to be quick;
3, the utility model needn't drop into miscellaneous equipment, and experimentation cost is low, and the precompressed loading force is accurate and easy to control;
4, the utility model can in time unload when pinpointing the problems, and the generation of accident is safe and reliable in avoiding loading.
Description of drawings
Fig. 1 is the utility model master TV structure schematic diagram;
Fig. 2 is the utility model side-looking structural representation;
Fig. 3 is the utility model hydraulic jack and vertical lacing wire syndeton schematic diagram;
Fig. 4 is the utility model anchor structure schematic diagram.
Number in the figure: 1 anchor ingot; 2 bed dies; 3 hydraulic jack; 4 vertical lacing wires; 5 vertical distribution beam; 6 transverse distribution beams; 7 billets; 8 beam bodies; 9 full framings; 10 lower margin screw-thread steels; 11 ground anchor beams; 12 cushion caps; 13 pier shafts; 14 nuts
The specific embodiment
Referring to Fig. 1, Fig. 2, be under the full framing of setting up for casting beams body 89, anchor ingot 1 to be set in the present embodiment, the prepressing units that is made of hydraulic jack 3 and vertical lacing wire 4 is set between full framing 9 and anchor ingot 1.
In concrete the enforcement, the hydraulic jack 3 in the prepressing units is fixedly installed on the bed die 2 of full framing 9, and the bottom of vertical lacing wire 4 is fixedly connected on the anchor ingot 1, and the top of vertical lacing wire 4 penetrates the axle center punching duct well of hydraulic jack 3 and fixes with nut 14.
According to the width of beam body bottom, prepressing units should be set to one group, and one group of prepressing units according to the bottom width of beam body equidistantly and set in a row.
For active force is evenly distributed, on the bed die 2 of full framing 9, distribution beam is set, hydraulic jack 3 is fixedly installed on the distribution beam.Illustrated in figures 1 and 2, in the present embodiment, distribution beam be by along the beam axon to vertical distribution beam 5 and the double-deck distribution beam structure that constitutes along the transverse distribution beam 6 on the beam body width, vertically distribution beam 5 and transverse distribution beam 6 are the back-to-back Two bors d's oeuveres channel-section steel that is welded to each other, and are reserved with the space greater than the diameter of vertical lacing wire between the Two bors d's oeuveres channel-section steel; Billet 7 (shown in Figure 3) is set between hydraulic jack 3 and transverse distribution beam 6, and vertically distribution beam 5 is between bed die 2 and transverse distribution beam 6.
Anchor ingot 1 is to be fixed on the ground anchor beam 11 by lower margin screw-thread steel 10, and each anchor ingot 1 is uniform on anchor ingot beam 11; Vertical lacing wire 4 is φ 32 fining twisted steels (shown in Figure 4), and cushion cap 12 and pier shaft 13 are the supporting construction of beam body 8 among the figure.
Before the precompressed, should be again to each hydraulic jack and on pressure meter match effect.
During precompressed, the classification weight of the maximum load distribution situation calculated value of using according to structure loads, when hydraulic jack reaches every grade of load, fixing a period of time, treat that gauge hand is stable after, measure deformation values; Same deformation values at different levels, load shedding, and measurement distortion, the record related data measured during unloading.
During loading, all hydraulic jack needs pressurization simultaneously, and it is synchronous that compressive pre-stress should keep.
After each level loads, must in time check the connection situation and the working condition of each rod member in the full framing, in time make the judgement that can continue to load.Load load when reaching 1.2 times of maximum applied load, should keep stable, treat to unload after nonelastic deformation has all been eliminated.At last result of the test is put in order, make the loading test report, the measurement result of this elastic deformation value and nonelastic deformation value can be used for guiding construction, so that in construction the template absolute altitude is adjusted.

Claims (7)

1. a bridge beam body full framing pre-pressing system of constructing, it is characterized in that under the full framing (9) of cast-in-place beam body construction, anchor ingot (1) being set, the prepressing units by hydraulic jack (3) and vertical lacing wire (4) formation is set between described full framing (9) and anchor ingot (1).
2. the bridge beam body full framing according to claim 1 pre-pressing system of constructing, it is characterized in that the hydraulic jack (3) in the described prepressing units is fixedly installed on the bed die (2) of full framing (9), the bottom of described vertical lacing wire (4) is fixedly connected on the described anchor ingot (1), and the top of vertical lacing wire (4) penetrates the axle center punching duct well of hydraulic jack (3) and fixes with nut (14).
3. the bridge beam body full framing according to claim 1 and 2 pre-pressing system of constructing is characterized in that described prepressing units is one group, and one group of prepressing units according to the bottom width of beam body equidistantly and set in a row.
4. the bridge beam body full framing according to claim 2 pre-pressing system of constructing is characterized in that on the bed die (2) of described full framing (9) distribution beam being set, and described hydraulic jack (3) is fixedly installed on the distribution beam.
5. the bridge beam body full framing according to claim 4 pre-pressing system of constructing, it is characterized in that described distribution beam be by along the beam axon to vertical distribution beam (5) and the double-deck distribution beam structure that constitutes along the transverse distribution beam (6) on the beam body width.
6. the bridge beam body full framing according to claim 5 pre-pressing system of constructing, it is characterized in that described vertical distribution beam (5) and transverse distribution beam (6) are the back-to-back Two bors d's oeuveres channel-section steel that is welded to each other, and be reserved with space between the Two bors d's oeuveres channel-section steel greater than the diameter of vertical lacing wire.
7. the bridge beam body full framing according to claim 6 pre-pressing system of constructing, it is characterized in that between described hydraulic jack (3) and transverse distribution beam (6) billet (7) being set, vertically distribution beam (5) is positioned between bed die (2) and the transverse distribution beam (6).
CN 201120053594 2011-03-03 2011-03-03 Bridge body full framing construction preloading system CN202000264U (en)

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CN 201120053594 CN202000264U (en) 2011-03-03 2011-03-03 Bridge body full framing construction preloading system

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CN 201120053594 CN202000264U (en) 2011-03-03 2011-03-03 Bridge body full framing construction preloading system

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102587283A (en) * 2012-03-14 2012-07-18 中国十九冶集团有限公司 Cast-in-situ construction method of cast-in-situ concrete bridge
CN102704401A (en) * 2012-05-28 2012-10-03 宁波二十冶建设有限公司 Multizone pre-pressing technology for full framing
CN103061264A (en) * 2012-12-08 2013-04-24 中铁三局集团有限公司 Method and device for pre-pressing high-position support single column in water
CN103437279A (en) * 2013-08-29 2013-12-11 中交二公局第一工程有限公司 Overhead cast-in-place box beam pressure-bearing strut and construction technology thereof
CN103437291A (en) * 2013-08-02 2013-12-11 中交二公局第一工程有限公司 Integral water tank preloading construction process
CN103470041A (en) * 2013-09-27 2013-12-25 中铁三局集团有限公司 Loose sand loading pre-compaction construction method for cast-in-situ concrete beam form steel pipe support
CN104894981A (en) * 2015-06-12 2015-09-09 吴江市明港道桥工程有限公司 Reaction frame pre-pressing system for bracket of cantilever section
CN105155425A (en) * 2015-09-22 2015-12-16 深圳市市政工程总公司 Fluid analogue simulation preloading construction method of full framing
CN109024290A (en) * 2018-08-01 2018-12-18 中铁十局集团第五工程有限公司 A kind of bowl fastening type full framing and its construction method for continuous beam

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102587283B (en) * 2012-03-14 2014-11-26 中国十九冶集团有限公司 Cast-in-situ construction method of cast-in-situ concrete bridge
CN102587283A (en) * 2012-03-14 2012-07-18 中国十九冶集团有限公司 Cast-in-situ construction method of cast-in-situ concrete bridge
CN102704401A (en) * 2012-05-28 2012-10-03 宁波二十冶建设有限公司 Multizone pre-pressing technology for full framing
CN103061264A (en) * 2012-12-08 2013-04-24 中铁三局集团有限公司 Method and device for pre-pressing high-position support single column in water
CN103061264B (en) * 2012-12-08 2015-05-13 中铁三局集团有限公司 Method and device for pre-pressing high-position support single column in water
CN103437291A (en) * 2013-08-02 2013-12-11 中交二公局第一工程有限公司 Integral water tank preloading construction process
CN103437291B (en) * 2013-08-02 2015-10-21 中交二公局第一工程有限公司 Monolithic water tank precompressed construction technology
CN103437279A (en) * 2013-08-29 2013-12-11 中交二公局第一工程有限公司 Overhead cast-in-place box beam pressure-bearing strut and construction technology thereof
CN103437279B (en) * 2013-08-29 2015-10-21 中交二公局第一工程有限公司 Overhead cast-in-place box compression struts and construction technology thereof
CN103470041A (en) * 2013-09-27 2013-12-25 中铁三局集团有限公司 Loose sand loading pre-compaction construction method for cast-in-situ concrete beam form steel pipe support
CN103470041B (en) * 2013-09-27 2016-05-11 中铁三局集团有限公司 The cast-in-place concrete beam template steel pipe support precompressed construction method that adopts loose sand to load
CN104894981A (en) * 2015-06-12 2015-09-09 吴江市明港道桥工程有限公司 Reaction frame pre-pressing system for bracket of cantilever section
CN105155425A (en) * 2015-09-22 2015-12-16 深圳市市政工程总公司 Fluid analogue simulation preloading construction method of full framing
CN109024290A (en) * 2018-08-01 2018-12-18 中铁十局集团第五工程有限公司 A kind of bowl fastening type full framing and its construction method for continuous beam

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Granted publication date: 20111005

Termination date: 20180303