CN106702906A - Pre-pressing device for hanging baskets and pre-pressing method thereof - Google Patents
Pre-pressing device for hanging baskets and pre-pressing method thereof Download PDFInfo
- Publication number
- CN106702906A CN106702906A CN201611128879.3A CN201611128879A CN106702906A CN 106702906 A CN106702906 A CN 106702906A CN 201611128879 A CN201611128879 A CN 201611128879A CN 106702906 A CN106702906 A CN 106702906A
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- China
- Prior art keywords
- hanging basket
- bridge
- steel plate
- bar
- pressing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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 invention discloses a pre-pressing device for hanging baskets and a pre-pressing method thereof and belongs to the technical field of bridge construction. The pre-pressing device comprises the hanging baskets. Pre-buried steel plates corresponding to webs are arranged on the end head of the 0# section, and each pre-buried steel plate is composed of an upper steel plate body and a lower steel plate body which vertically correspond to each other. A longitudinal-bridge-direction horizontal rod is welded to each lower steel plate body, and an oblique supporting rod is welded to each upper steel plate body and is connected with the horizontal rod in a welded mode to form a triangular structure. A longitudinal-bridge-direction distributive girder and a transverse-bridge-direction distributive girder are installed on each hanging basket bottom girder, and a jack is installed on the position, corresponding to the corresponding web, of each hanging basket primary truss and located between the corresponding horizontal rod and the corresponding longitudinal-bridge-direction distributive girder. The pre-pressing method sequentially comprises the following steps that the pre-buried steel plates, anchoring steel ribs and finish rolling threaded steel ribs are installed; the horizontal rods and the oblique supporting rods are hoisted and connected with the pre-buried steel plates in a welded mode; the longitudinal-bridge-direction distributive girders and the transverse-bridge-direction distributive girders are installed; the jacks are installed; the pre-pressing hanging baskets are loaded in a grading mode; and after pre-pressing is completed, the jacks are dismounted, and the horizontal rods and the oblique supporting rods are cut off. According to the pre-pressing device for the hanging baskets and the pre-pressing method thereof, pre-pressing operation is easy, safety is high, work efficiency is high, and the pre-pressing device and the pre-pressing method are economic, convenient and quick.
Description
Technical field
The invention belongs to technical field of bridge construction.
Background technology
In technical field of bridge construction, cantilever pouring realizes that sections pours case by the use of Hanging Basket system as support and template system
Beam pouring construction, the precompressed elastic settlement value of hanging basket main truss is to determine the significant data of section box girder mould absolute altitude, direct shadow
Sound arrives into the linear quality of bridge, therefore must carry out precompressed acquisition elastic settlement value to Hanging Basket after Hanging Basket installation.
Precompressed for Hanging Basket before coming into operation, current way has sandbag method, reinforcing bar accumulation load method and adopting water tank method.Tool
Gymnastics is made to be to lift sandbag or preloading reinforcing bar on the end template of Hanging Basket, or one group of water tank of preloading, then according to design requirement
Progressively load and unload, to eliminate inelastic deformation, and measure the elastic deformation amount of Hanging Basket, this way is primarily present following asking
Topic：
1st, the experiment preparation time is big compared with long, loading difficulty, preloading height is high, relatively costly；
2nd, being limited to and close on existing line by place is influenceed, and high to site requirements, crane operation is extremely difficult, construction operation
Difficulty is big；
3rd, work high above the ground, heap loading height is high, and squeeze time is long, there is security risk very high.
For T structure box girder cantilever sections it is larger, bridge pier is higher in the case of, the piling prepressing workload of prior art is big, heap
Load process and uninstall process time are more long, and preloading and uninstall process security risk are high, are unfavorable for that the duration ensures.
For the problem of conventional prestressing technology, prior art proposes some improvement projects：
China Patent No.:201120053596.3, the utility model discloses a kind of cantilever casting prepressing system of hanging basket, its
It is characterized in, for the Hanging Basket being fixed on by cantilever in the beam body for having poured, anchor ingot to be fixedly installed below Hanging Basket, in Hanging Basket
Bed die and anchor ingot between the prepressing units being made up of hydraulic jack and vertical lacing wire are set.The utility model system is substituted
The pre-pressing system that useful sandbag, reinforcing bar or water tank are implemented, its loading and discharge time are short, simple to operate, without the long period
Prepare, experiment is easy to be quick；Miscellaneous equipment need not be put into, experimentation cost is low, hydraulic jack precompressed loading force is accurate and easily-controllable
System.
China Patent No.:201220423823.1, the utility model is related to field of bridge construction, and specially a kind of cantilever is poured
Build construction hanging basket prepressing device, solve existing Hanging Basket precompressed institute and have that complex procedures, site requirements be high, difficulty of construction using method
The problems such as big and security risk is high, including extend through and be arranged on main truss cradle crossbeam and positioned at two main truss cradles
Hydraulic jack is installed in the back-pressure fining twisted steel suspension rod of both sides, back-pressure fining twisted steel suspension rod upper end, and top penetrates hydraulic pressure thousand
Jin top axle center punching duct and with screw cap anchoring, lower end is embedded in cantilever continuous beam two grades of cushion caps of main pier, is externally provided with protection
Sleeve pipe, back-pressure fining twisted steel downrod lower end end is welded with backing plate.It is simple structure, reasonable in design, solve traditional Hanging Basket pre-
The drawbacks of pressure, save working space, it is to avoid using the complicated procedures of forming and potential safety hazard of piling prepressing, improve work effect
Rate, it is ensured that the safe mass of construction, reduces construction cost, accelerates project progress.
Although prior art is improved to a certain extent, prior art still suffers from structure, complex operation, efficiency
The problem of low and high cost.
The content of the invention
It is an object of the invention to：A kind of Hanging Basket prepressing device and its preloading method are proposed, precompressed is simple to operate, security
Height, work efficiency is high, economy is convenient.
The object of the invention is realized by following technical proposals：
A kind of Hanging Basket prepressing device, including Hanging Basket, in construction of bridge T structure beam 0# sections termination, correspondence per pass web is provided with pre-buried steel
Plate, pre-embedded steel slab is fixed by anchor bar and finish rolling deformed bar, and anchor bar is relatively short and is weldingly fixed on pre-buried steel
Plate inner side, finish rolling deformed bar is relatively long and is fastened on pre-embedded steel slab outside by nut；Pre-embedded steel slab is by corresponding up and down
Upper steel plate and lower steel plate are constituted, welded on lower steel plate a vertical bridge to horizon bar, a hound and and water are welded on upper steel plate
Flat bar is formed by welding three-legged structure；Horizontal, vertical bridge is installed on Hanging Basket bottom girder to distribution beam, in every Pin hanging basket main truss correspondence
Web position, is provided with very heavy horizon bar and the vertical bridge of peaking between distribution beam, and jack position correspondence hound and level
At bar node.
Alternatively, horizon bar and hound are welded to form by double joint I-steel make-up.
Alternatively, horizon bar and hound into 26.5 degree of angles.
Alternatively, one piece of reinforcement is welded below the horizon bar of hound jack position corresponding with horizontal bar node
Steel plate.
Alternatively, lower steel plate bottom is not less than 1.3m, upper lower steel plate spacing 3m away from box beam base plate bottom distance.
The preloading method of foregoing Hanging Basket prepressing device, comprises the following steps successively：
The first step, correspondence per pass web installs pre-embedded steel slab and anchor bar and essence before construction of bridge T structure beam 0# sections is poured
Roll spiral；
Second step, tightens finish rolling deformed bar nut, and the lifting of horizon bar and hound and the pre-embedded steel slab that will be processed are welded
Connect；
3rd step, installs horizontal, vertical bridge to distribution beam on Hanging Basket bottom girder；
4th step, in every Pin hanging basket main truss correspondence web position, installs very heavy horizon bar and the vertical bridge of peaking to distribution beam
Between；
5th step, connects the pipeline between jack and oil pump and debugs, hierarchical loading precompressed Hanging Basket；
6th step, precompressed terminates, and removes jack and cuts off horizon bar and hound.
Foregoing main scheme of the invention and its each further selection scheme can be this with independent assortment to form multiple schemes
Invention can be used and claimed scheme；And the present invention, between (each non conflicting selection) selection and and other selections between
Can also independent assortment.Those skilled in the art can understand have after the present invention program is understood according to prior art and common knowledge
Multiple combination, is claimed technical scheme of the invention, and exhaustion is not done herein.
The course of work is：This patent is by the way that in 0# sections termination web pre-embedded steel slab, weld horizontal bar and hound are upper
Counter-force fulcrum, is lower counter-force to distribution beam using Hanging Basket bed die skeleton platform (Hanging Basket bottom girder) and horizontal, the vertical bridge installed thereon
Fulcrum, very heavy to peak at loading precompressed Hanging Basket between upper and lower counter-force fulcrum, quick with loading and unloading, security and economy are obvious
The characteristics of.Wherein, the embedding pattern of pre-embedded steel slab, is combined mode and effectively improves 0# using fining twisted steel and anchor bar
Sections web end stress so that the fulcrum preloading structure of counter-force up and down in this patent using simple triangle skeleton is able into
Work(, prepressing structure is formed without supporting constructions such as complicated anchor cable, suspension rods.
Beneficial effects of the present invention：The present invention greatly reduces the workload of precompressed, preferably to improve construction operation strong
Degree, improves security risk, embodies excellent economy.
Brief description of the drawings
Fig. 1 is the use state apparatus structure schematic diagram of the embodiment of the present invention；
Fig. 2 is pre-embedded steel slab, horizon bar and the hound arrangement schematic diagram of the embodiment of the present invention；
Fig. 3 is pre-embedded steel slab, horizon bar and the hound mounting structure schematic diagram of the embodiment of the present invention；
Wherein 1, horizon bar 2, hound 3, upper steel plate 4, finish rolling deformed bar 5, jack 6, vertical bridge are to distribution beam
7th, direction across bridge distribution beam 8, lower steel plate 9, Hanging Basket bottom girder 10, anchor bar 11, hanging basket main truss 12, construction of bridge T structure beam 0#
Sections 13, preceding suspender belt.
Specific embodiment
Following non-limiting examples are used to illustrate the present invention.
With reference to shown in Fig. 1-3, a kind of Hanging Basket prepressing device, including Hanging Basket, in the termination of construction of bridge T structure beam 0# sections 12, correspondence is every
Road web is provided with pre-embedded steel slab, and pre-embedded steel slab is made up of upper and lower corresponding upper steel plate 3 and lower steel plate 8, and upper and lower steel plate 3,8 leads to
Cross anchor bar 10 and finish rolling deformed bar 4 is fixed, anchor bar 10 is relatively short and is weldingly fixed in upper and lower steel plate 3,8
Side, finish rolling deformed bar 4 is relatively long and is fastened on the outside of upper and lower steel plate 3,8 by nut；The vertical bridge of welding one on lower steel plate 8
To horizon bar 1, welded on upper steel plate 3 and a hound 2 and be formed by welding three-legged structure with horizon bar 1；In Hanging Basket bottom girder 9
On horizontal, vertical bridge is installed to distribution beam 7,6, in the corresponding web position of every Pin hanging basket main truss 11, jack 5 is installed in level
Bar 1 and vertical bridge are between distribution beam 6, and (hound 2 and level at the position of jack 5 correspondence hound 2 and the node of horizon bar 1
Bar 1 is welded and fixed place, it is illustrated that in be located at the middle part of horizon bar 1 and keep right position).Alternatively, as shown in this embodiment, horizon bar 1
It is formed by welding by double joint I40a make-ups, hound 2 is formed by welding by double joint I40a make-ups, the thickness of upper and lower steel plate 3,8 20mm, finish rolling
Spiral 4 is Φ 25mm, and it is I40b to indulge bridge to distribution beam 6, and direction across bridge distribution beam 7 is I40b.The bottom of lower steel plate 8 is away from box beam base plate
Bottom distance is not less than 1.3m, upper and lower steel plate 3,8 spacing 3m, horizon bar 1 and 2 one-tenth of hound, 26.5 degree angle αs, in hound 2 and
One piece of reinforcement steel plate (not shown) of the lower section of horizon bar 1 welding of correspondence jack 5 position at the node of horizon bar 1.
The preloading method of foregoing Hanging Basket prepressing device, comprises the following steps successively：
The first step, correspondence per pass web installs pre-embedded steel slab (upper and lower steel plate 3,8) before construction of bridge T structure beam 0# sections 12 is poured
With anchor bar 10 and finish rolling deformed bar 4；
Second step, tightens the nut of finish rolling deformed bar 4, and the horizon bar 1 and hound 2 that will be processed are lifted and pre-embedded steel slab
(upper and lower steel plate 3,8) is welded；
3rd step, installs horizontal, vertical bridge to distribution beam 7,6 on Hanging Basket bottom girder 9；
4th step, in the corresponding web position of every Pin hanging basket main truss 11, install jack 5 in horizon bar 1 and vertical bridge to point
With between beam 6；
5th step, connects the pipeline between jack 5 and oil pump and debugs, hierarchical loading precompressed Hanging Basket；
6th step, precompressed terminates, and removes jack 5 and cuts off horizon bar 1 and hound 2.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (6)
1. a kind of Hanging Basket prepressing device, including Hanging Basket, it is characterised in that：In construction of bridge T structure beam 0# sections termination correspondence per pass web
Pre-embedded steel slab is provided with, pre-embedded steel slab is fixed by anchor bar and finish rolling deformed bar, anchor bar is relatively short and welds solid
Pre-embedded steel slab inner side is scheduled on, finish rolling deformed bar is relatively long and is fastened on pre-embedded steel slab outside by nut；Pre-embedded steel slab by
Upper and lower corresponding upper steel plate and lower steel plate composition, welded on lower steel plate a vertical bridge to horizon bar, one is welded on upper steel plate tiltedly
Strut is simultaneously formed by welding three-legged structure with horizon bar；Horizontal, vertical bridge is installed on Hanging Basket bottom girder to distribution beam, in every Pin Hanging Baskets
Main couple correspondence web position, is provided with very heavy horizon bar and the vertical bridge of peaking between distribution beam, and jack position correspondence is oblique
At strut and horizontal bar node.
2. Hanging Basket prepressing device as claimed in claim 1, it is characterised in that：Horizon bar and hound are by double joint I-steel pair
Button is welded to form.
3. Hanging Basket prepressing device as claimed in claim 1, it is characterised in that：Horizon bar and hound into 26.5 degree of angles.
4. Hanging Basket prepressing device as claimed in claim 1, it is characterised in that：It is corresponding very heavy with horizontal bar node in hound
Push up one block of reinforcement steel plate of horizon bar lower section welding of position.
5. Hanging Basket prepressing device as claimed in claim 1, it is characterised in that：Lower steel plate bottom is not less than away from box beam base plate bottom distance
1.3m, upper lower steel plate spacing 3m.
6. the preloading method of the Hanging Basket prepressing device as described in any claim in claim 1 to 5, it is characterised in that successively
Comprise the following steps：
The first step, correspondence per pass web installs pre-embedded steel slab and anchor bar and finish rolling spiral shell before construction of bridge T structure beam 0# sections is poured
Line reinforcing bar；
Second step, tightens finish rolling deformed bar nut, and the lifting of horizon bar and hound and the pre-embedded steel slab that will be processed are welded；
3rd step, installs horizontal, vertical bridge to distribution beam on Hanging Basket bottom girder；
4th step, in every Pin hanging basket main truss correspondence web position, installs very heavy horizon bar and the vertical bridge of peaking between distribution beam；
5th step, connects the pipeline between jack and oil pump and debugs, hierarchical loading precompressed Hanging Basket；
6th step, precompressed terminates, and removes jack and cuts off horizon bar and hound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611128879.3A CN106702906A (en) | 2016-12-09 | 2016-12-09 | Pre-pressing device for hanging baskets and pre-pressing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611128879.3A CN106702906A (en) | 2016-12-09 | 2016-12-09 | Pre-pressing device for hanging baskets and pre-pressing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106702906A true CN106702906A (en) | 2017-05-24 |
Family
ID=58936608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611128879.3A Pending CN106702906A (en) | 2016-12-09 | 2016-12-09 | Pre-pressing device for hanging baskets and pre-pressing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106702906A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107794840A (en) * | 2017-11-08 | 2018-03-13 | 中铁上海工程局集团有限公司 | A kind of bridge Large Diameter Steel Drainage Pipe erecting device and its construction method |
| CN109371846A (en) * | 2018-11-28 | 2019-02-22 | 中交第二航务工程局有限公司 | A kind of assembled Multifunction side is across cast-in-place support and its construction method |
| CN111350139A (en) * | 2020-03-12 | 2020-06-30 | 湖北省路桥集团有限公司 | Construction method of light hanging basket |
| CN111914458A (en) * | 2020-08-18 | 2020-11-10 | 重庆交通大学 | Method for controlling linear shape of arch ring of reinforced concrete arch bridge |
| CN113216012A (en) * | 2021-05-20 | 2021-08-06 | 中交第二航务工程局有限公司 | Construction method for applying pre-pressure to bottom formwork without stacking |
| CN113430953A (en) * | 2021-07-28 | 2021-09-24 | 江苏瑞沃建设集团有限公司 | Pre-compaction device of hanging basket for cantilever construction bridge support |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107794840A (en) * | 2017-11-08 | 2018-03-13 | 中铁上海工程局集团有限公司 | A kind of bridge Large Diameter Steel Drainage Pipe erecting device and its construction method |
| CN109371846A (en) * | 2018-11-28 | 2019-02-22 | 中交第二航务工程局有限公司 | A kind of assembled Multifunction side is across cast-in-place support and its construction method |
| CN111350139A (en) * | 2020-03-12 | 2020-06-30 | 湖北省路桥集团有限公司 | Construction method of light hanging basket |
| CN111350139B (en) * | 2020-03-12 | 2021-08-20 | 湖北省路桥集团有限公司 | Construction method of light hanging basket |
| CN111914458A (en) * | 2020-08-18 | 2020-11-10 | 重庆交通大学 | Method for controlling linear shape of arch ring of reinforced concrete arch bridge |
| CN111914458B (en) * | 2020-08-18 | 2022-06-17 | 重庆交通大学 | Method for controlling line shape of arch ring of reinforced concrete arch bridge |
| CN113216012A (en) * | 2021-05-20 | 2021-08-06 | 中交第二航务工程局有限公司 | Construction method for applying pre-pressure to bottom formwork without stacking |
| CN113430953A (en) * | 2021-07-28 | 2021-09-24 | 江苏瑞沃建设集团有限公司 | Pre-compaction device of hanging basket for cantilever construction bridge support |
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Application publication date: 20170524 |