CN207739160U - A kind of Hanging Basket trussing entirety prepressing structure - Google Patents
A kind of Hanging Basket trussing entirety prepressing structure Download PDFInfo
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- CN207739160U CN207739160U CN201721901622.7U CN201721901622U CN207739160U CN 207739160 U CN207739160 U CN 207739160U CN 201721901622 U CN201721901622 U CN 201721901622U CN 207739160 U CN207739160 U CN 207739160U
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- hanging basket
- trussing
- precompressed
- preformed hole
- segments
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Abstract
The utility model provides a kind of Hanging Basket trussing entirety prepressing structure, this method is to utilize the existing material and facility in the follow-up cantilever construction of Hanging Basket, stress of the main couple system in practice of construction when is simulated in the bridge floor flat roof area of the segments 0# having poured, using jack and the segments 0# top plate (flange plate) as upper and lower counter-force fulcrum, the top power of jack is converted into the prefabricating load being applied in Hanging Basket trussing, realize the whole precompressed of Hanging Basket trussing, this method is simple and efficient to handle, safe and reliable, cost is relatively low, easy to utilize.The utility model belongs to technical field of bridge construction.
Description
Technical field
The utility model is related to a kind of Hanging Basket trussing entirety prepressing structures, belong to field of bridge construction.
Background technology
Continuous beam (rigid structure) bridge mainly uses Hanging Basket cantilever pouring to construct.It must be carried out after the completion of Hanging Basket trussing is assembled
Its safety is verified in precompressed, while eliminating its inelastic deformation, determines flexible deformation value.Hanging Basket counter-force precompressed at present mainly has instead
Draw precompressed and back-pressure precompressed two ways.Reverse drawing precompressed on cushion cap or ground mainly using anchor is arranged, at Hanging Basket bottom
Carry out a kind of method of reversed tensioning precompressed in template by steel strand wires using jack device, anchor is arranged in this method
It is required that it is high, while being limited by orographic condition at bridge location and bridge pier pier height, execute-in-place is comparatively laborious and difficult.Back-pressure precompressed is main
There are two types of modes：One is on ground level platform by by two panels main couple it is symmetrically placed then use jack back-pressure,
Which has only carried out the precompressed of monolithic truss piece, is unable to the stressing conditions of the entire trussing of accurate simulation Hanging Basket；One is
Hanging Basket walking in place after, precompressed reaction frame is welded on the pre-embedded steel slab for having poured segment end, by be placed in reaction frame with
The mode of jack back-pressure between template, which need to additionally make reaction frame and pre-embedded steel slab, and construction is relatively complicated, to anti-
Power sets up meter and built-in fitting setting requirements are higher, and reaction frame self stability is poor, and torsional buckling is susceptible in precompressed.
Invention content
The purpose of this utility model is that：A kind of Hanging Basket trussing entirety prepressing structure is provided, to solve current Hanging Basket
Truss precompressed construction method is cumbersome in the presence of construction, is limited by orographic condition and pier height, is difficult to simulate trussing actual loading shape
State need to additionally increase the series of technical such as auxiliary material and measure.
To solve the above problems, quasi- use such a Hanging Basket trussing entirety prepressing structure, including Hanging Basket truss system
It unites and has poured the segments 0#, poured and be embedded with precompressed preformed hole on box beam top plate and flange plate on the segments 0#, precompressed is reserved
Hole is corresponding with the hoisting point position of Hanging Basket suspension system, Hanging Basket trussing be fixed on poured box beam top plate on the segments 0# and
On flange plate, preceding upper beam is provided with support pad steel at the precompressed load(ing) point on preceding upper beam in Hanging Basket trussing
It rests the head on, is mounted with jack on support pad steel sleeper, the bottom of precompressed preformed hole is also equipped with support pad steel sleeper, jack center, support pad steel
Pillow center is vertically overlapped with precompressed preformed hole center, and tensioning finish rolling deformed bar from top to bottom wears jack, support pad steel successively
Pillow, preceding upper beam, precompressed preformed hole and support pad steel sleeper, and the upper and lower ends of tensioning finish rolling deformed bar pass through mating billet
It is anchored with nut.
In aforementioned prepressing structure, pours and has also been embedded with rear anchor preformed hole on box beam top plate and flange plate on the segments 0#,
Anchor preformed hole is depending on the fixed position of Hanging Basket trussing afterwards, and Hanging Basket trussing is by being set in rear anchor preformed hole
Anchor finish rolling deformed bar anchors afterwards.
Compared with prior art, the utility model advantage is as follows：
1, using the segments 0# bridge floor has been poured as pre- flattening bench, entire pre-compaction process is completed within the scope of bridge floor, drop
Low security risk；
2, the existing equipment and material constructed using Hanging Basket cantilever pouring is not necessarily to additional aids and material, substantially dropped
Low construction cost；
3, precompressed load mode mainly using jack and has poured the segments 0# top plate and flange plate as upper and lower counter-force branch
The top power of jack is converted to and is applied to prefabricating load in Hanging Basket trussing by point, and entire prepressing structure designs simple, stress
It is clear, it is easy to operate, saved the construction time；
4, precompressed load(ing) point is consistent with Hanging Basket suspension system hoisting point position and quantity, and the distribution being further applied load more meets Hanging Basket
The stressing conditions of trussing real work, precompressed outcome data are more true and reliable.
Description of the drawings
Fig. 1 is the side view of the utility model embodiment；
Fig. 2 is the front view of the utility model embodiment；
Fig. 3 is the preformed hole layout drawing of the utility model embodiment, i.e. the vertical view that preformed hole is arranged in Fig. 1.
It is marked in figure：1- truss pieces, upper beam before 2-, door frame in 3-, 4- support pad steel sleepers, 5- jack, 6- tensioning finish rolling
Spiral, 7- steel sleepers, 8- tracks out of shape, 9- sliding rail anchors out of shape, 10- pulleys out of shape, 11- sliding ships out of shape, anchor after 12-
Beam, anchor finish rolling deformed bar after 13-, 14, precompressed preformed hole, anchor preformed hole after 15-, 16- poured the segments 0#.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only explaining this
Utility model is not used to limit the utility model.
Embodiment
As shown in Figs. 1-3, the utility model provides a kind of Hanging Basket trussing entirety prepressing structure, including Hanging Basket truss
System and the segments 0# 16 are poured, have poured and be embedded with precompressed preformed hole 14 on box beam top plate and flange plate on the segments 0# 16,
Precompressed preformed hole 14 is corresponding with the hoisting point position of Hanging Basket suspension system, has poured box beam top plate and flange plate on the segments 0# 16
On be also embedded with rear anchor preformed hole 15, rear anchor preformed hole 15 is depending on the fixed position of Hanging Basket trussing, Hanging Basket truss system
System is anchored in the box beam top poured on the segments 0# 16 by the rear anchor finish rolling deformed bar 13 being set in rear anchor preformed hole 15
On plate and flange plate, preceding upper beam 2 is provided with branch at the precompressed load(ing) point on preceding upper beam 2 in Hanging Basket trussing
Steel sleeper 4 is padded, is mounted with jack 5 on support pad steel sleeper 4, the bottom of precompressed preformed hole 14 is also equipped with support pad steel sleeper 4, jack 5
Center, 4 center of support pad steel sleeper are vertically overlapped with 14 center of precompressed preformed hole, and tensioning finish rolling deformed bar 6 is from top to bottom worn successively
If jack 5, support pad steel sleeper 4, preceding upper beam 2, precompressed preformed hole 14 and support pad steel sleeper 4, and tensioning finish rolling deformed bar 6 is upper
Lower both ends are anchored by mating billet and nut.
Its preloading method is as follows：
Step 1：In bridge has poured 16 work progress of the segments 0# on box beam top plate and flange plate pre-buried preformed hole, institute
It includes rear anchor preformed hole 15, precompressed preformed hole 14 to state preformed hole mainly, and reserved bore dia is 100mm, the precompressed preformed hole
14 with tensioning finish rolling deformed bar 6 in same vertical centerline and quantity is identical.
Step 2：After tensioning mud jacking in the segments 0# to be done, construction hanging basket trussing carries out steel successively first on bridge floor
Pillow 7, sliding rail out of shape 8, sliding rail anchor out of shape 9 are assembled, and it is assembled with truss piece 1 that ship 11 then is slided in traveling pulley 10, traveling
Be positioned on traveling sliding rail 8 and be fixed temporarily after good, it is then assembled successively after anchor beam 12, rear anchor finish rolling deformed bar 13 simultaneously
Hanging Basket truss piece rear end is entirely anchored by the billet and nut mating with rear anchor finish rolling deformed bar, finally successively
The assembly of door frame 3, preceding upper beam 2 in completion；13 lower end of anchor fining twisted steel is answered at 16 anchoring of the segments 0# with having poured after described
Support pad is carried out using support pad steel sleeper 4, increases the forced area at anchoring；
Step 3：At precompressed load(ing) point before Hanging Basket on upper beam 2 support pad steel sleeper 4, support pad steel are placed perpendicular to upper beam
Jack is placed on pillow 4,5 center of jack, 4 center of support pad steel sleeper and 14 center of precompressed preformed hole vertically weigh in installation process
Close, then by tensioning finish rolling deformed bar 6 pass through jack 5, support pad steel sleeper 4 and precompressed preformed hole 14, upper and lower side be all made of with
The mating billet of tensioning finish rolling deformed bar 16 and nut are anchored, and anchoring lower ends are in having poured the segments 0# top plate or the wing
Listrium bottom, bottom should use support pad steel sleeper 4 to carry out support pad, increase forced area at anchoring, upper end is anchored on jack 5
Portion, the precompressed load(ing) point are identical as the hoisting point position of Hanging Basket suspension system and quantity；
Step 4：Observation point is arranged, and precompressed observation point is arranged on Hanging Basket truss piece 1 and preceding upper beam 2, according to precompressed side
9 observation points are arranged in case altogether, and totally 5 observation points, every truss piece tail portion chord member are observed for 2 totally respectively at precompressed load(ing) point
Totally 2 observation points on point, the corresponding preceding upper beam in every truss piece front end.
Step 5：Carry out Hanging Basket precompressed work, connect jack 5 and mating oil pump and debugged, to Hanging Basket trussing into
The synchronous precompressed of row classification；
Step 6：Precompressed terminates, and removes tensioning finish rolling deformed bar 6, jack 5, support pad steel sleeper 4 successively.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (2)
1. a kind of Hanging Basket trussing entirety prepressing structure, it is characterised in that：Including Hanging Basket trussing and the segments 0# are poured
(16), it has poured and has been embedded with precompressed preformed hole (14), precompressed preformed hole on box beam top plate and flange plate on the segments 0# (16)
(14) corresponding with the hoisting point position of Hanging Basket suspension system, Hanging Basket trussing is fixed on the box beam poured on the segments 0# (16)
On top plate and flange plate, set perpendicular to preceding upper beam (2) at the precompressed load(ing) point on preceding upper beam (2) in Hanging Basket trussing
It is equipped with support pad steel sleeper (4), jack (5) is mounted on support pad steel sleeper (4), the bottom of precompressed preformed hole (14) is also equipped with support pad
Steel sleeper (4), jack (5) center, support pad steel sleeper (4) center are vertically overlapped with precompressed preformed hole (14) center, tensioning finish rolling spiral shell
Line reinforcing bar (6) from top to bottom wears jack (5), support pad steel sleeper (4), preceding upper beam (2), precompressed preformed hole (14) and branch successively
Steel sleeper (4) is padded, and the upper and lower ends of tensioning finish rolling deformed bar (6) are anchored by mating billet and nut.
2. a kind of Hanging Basket trussing entirety prepressing structure according to claim 1, it is characterised in that：The segments 0# are poured
(16) rear anchor preformed hole (15) is also embedded on the box beam top plate and flange plate on, rear anchor preformed hole (15) is according to Hanging Basket truss system
Depending on the fixed position of system, Hanging Basket trussing passes through the rear anchor finish rolling deformed bar (13) that is set in rear anchor preformed hole (15)
Anchoring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721901622.7U CN207739160U (en) | 2017-12-29 | 2017-12-29 | A kind of Hanging Basket trussing entirety prepressing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721901622.7U CN207739160U (en) | 2017-12-29 | 2017-12-29 | A kind of Hanging Basket trussing entirety prepressing structure |
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| CN207739160U true CN207739160U (en) | 2018-08-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109056556A (en) * | 2017-12-29 | 2018-12-21 | 中铁二局第工程有限公司 | A kind of Hanging Basket trussing entirety prepressing structure and preloading method |
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2017
- 2017-12-29 CN CN201721901622.7U patent/CN207739160U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109056556A (en) * | 2017-12-29 | 2018-12-21 | 中铁二局第工程有限公司 | A kind of Hanging Basket trussing entirety prepressing structure and preloading method |
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