CN202482777U - Novel temporary solidification system for bridge construction - Google Patents
Novel temporary solidification system for bridge construction Download PDFInfo
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- CN202482777U CN202482777U CN201120562863XU CN201120562863U CN202482777U CN 202482777 U CN202482777 U CN 202482777U CN 201120562863X U CN201120562863X U CN 201120562863XU CN 201120562863 U CN201120562863 U CN 201120562863U CN 202482777 U CN202482777 U CN 202482777U
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- overturning
- beam body
- antidumping
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Abstract
Provided is a novel temporary solidification system for bridge construction. The novel temporary solidification system for the bridge construction comprises temporary supports and antidumping devices arranged between the top faces of bridge pier bodies and cast-in-place sections of beam bodies. The antidumping devices are long and thin rod pieces, one end of each antidumping device is embedded in a supporting structure on a lower portion of a beam body and the other end of each antidumping device is fixed in a cast-in-place section of the beam body. A permanent support is arranged between the supporting structure on the lower portion of the beam body and the cast-in-place section. Provided are two rows of temporary supports and antidumping devices. The temporary supports and antidumping devices are arranged symmetrical to the beam bodies along a vertical bridge axis, and simultaneously symmetrical to the permanent supports along a horizontal bridge axis. Each antidumping device comprises an antidumping draw bar and a bellows sleeved outside the antidumping draw bar. The temporary supports are flexible temporary supports composed of steel plates and rubber. The novel temporary solidification system for the bridge construction avoids the problem that the beam bodies produce great structural secondary internal force when temporary solidification is relieved since the permanent supports sink to the maximum extent, meanwhile, the novel temporary solidification system for the bridge construction is convenient to install and remove, can save construction time and construction cost, and the temporary supports can be reused. The novel temporary solidification system for the bridge construction can be broadly applied to temporary supporting in continuous suspension beam casting stage.
Description
Technical field
The utility model relates to a kind of ancillary method in a kind of Construction of continuous beam stage, a kind of ancillary method of particularly a kind of continuous beam cantilever construction stage.
Background technology
The temporary consolidation system of continuous beam cantilever construction has multiple; But summarize the most basic has two kinds; These two kinds of temporary consolidation systems the most basic are following: a kind ofly be, on the pier shaft end face of bridge pier, directly carry out the pier beam consolidation, at bridge pier pier shaft end face the interim cushion block of rigidity is set; The interim cushion block of rigidity is reinforced concrete block or the block be made up of steel concrete and sulphur-bonded mortar, is used for girder; The overturning or slip resistance analysis pull bar of being made up of reinforcing bar or prestressed strand is set between pier shaft and beam body, and the pull bar two ends are stretched into pier shaft and Liang Tizhong respectively, are used for anchoring beam body, avoid the beam body to topple, and prestressed strand carries out the mud jacking sealing later in stretch-draw.
Another kind is, beyond pier shaft, near support cast-in-place sections end interim support bar is set, is used for girder.Interim support bar can adopt steel pipe, or adopts the shaped steel spelling, can directly stretch into the beam embodiment as the overturning or slip resistance analysis pull bar at the welded top reinforcing bar and water in the sections.Interim support bar also can adopt reinforced concrete upright column, and inner embedding overturning or slip resistance analysis pull bar stretches into the beam embodiment and waters in the sections.Other temporary consolidation system in fact all is that the part by these two kinds of systems combines each other, with above-mentioned both are similar.
The common defects of above-mentioned these two kinds of temporary consolidation systems the most basic is:
1, the interim cushion block of girder, interim support bar are non-yielding props to Liang Tidou, and itself does not have compressibilty; The overturning or slip resistance analysis pull bar of being made up of reinforcing bar does not have flexibility, and the overturning or slip resistance analysis pull bar of being made up of prestressed strand carries out the mud jacking sealing owing to the steel bundle later in stretch-draw, has also lost flexibility.Though permanent bearing has compressibility; But because cushion block, interim support bar are the reason of non-yielding prop to Liang Tidou temporarily; The beam body of cantilever construction can not be along with the increase of the propelling of cantilever construction progress, self load the interim cushion block of corresponding compression, interim support bar and descend; Therefore; Before removing temporary consolidation, the permanent bearing of continuous beam in fact just bears beam body load (just bearing the fractional load of cast-in-place sections basically) seldom, and most load all is to be born by the interim cushion block of non-yielding prop, interim support bar.Because after closing up, could remove temporary consolidation, so, behind the releasing temporary consolidation; Under the effect of deadweight of beam body and working load; The permanent bearing of continuous beam will inevitably produce compression, depression, though when design, considered the depression problem of permanent bearing, because the complexity of structure stress; And the operation of removing temporary consolidation is difficult to symmetry and accurately accomplishes simultaneously, the consideration of depression of supports problem is difficult to thoughtfully and fully tally with the actual situation comprehensively; So continuous beam produces structure time internal force because of depression of supports problem still exists, and has the possibility of considerable influence.Produce bigger structure time internal force because of depression of supports and can cause the beam body crack to occur, have influence on the quality and the application life of bridge.
2, the construction period of traditional temporary consolidation system is longer relatively.After the interim cushion block concreting, reach the certain length of time and intensity and just can carry out next step operation--the construction that sections is watered in the embodiment of----beam.
3, the dismounting duration of traditional temporary consolidation system longer, the manpower and the mechanical one-shift that need are more relatively.Interim cushion block concrete need cut, and interim support bar needs to cut, pulls up, slings and transport.
The temporary consolidation system of for these reasons, seeking to overcome above-mentioned defective or reduce above-mentioned defective effect as far as possible is significant, necessary.
The utility model content
The purpose of the utility model provides the novel temporary consolidation system that a kind of bridge construction uses; Solving existing temporary consolidation system is that non-yielding prop and rigidity link; Can't be implemented in before the temporary consolidation system removes fully; Let beam body load bear by permanent bearing basically, thereby avoid causing permanent bearing deflection after removing the temporary consolidation system to cause that greatly the beam body produces the technical problem of structure time internal force; And solve existing temporary consolidation system long construction period, construction technology complicated problems.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
The novel temporary consolidation system that a kind of bridge construction uses comprises temporary support and anti-overturning devices, and said temporary support is placed between the cast-in-place sections of pier shaft end face and beam body of bridge pier; Said anti-overturning devices is the slender type assembly; The one of which end is embedded in the cushion cap of pier shaft or bridge pier of bridge pier, and the other end is anchored in the cast-in-place sections of beam body, is supported with permanent bearing between the pier shaft end face of bridge pier and the cast-in-place sections of beam body; Said temporary support and anti-overturning devices are two rows; Temporary support, anti-overturning devices all are symmetrical in the suitable bridge of beam body to axis arranged, simultaneously, also are symmetrical in the direction across bridge axis arranged of permanent bearing; Said anti-overturning devices is made up of overturning or slip resistance analysis pull bar and the bellows that is enclosed within overturning or slip resistance analysis pull bar outside; Said temporary support is the flexible temporary support that steel plate and rubber are formed.
The steel bundle that said overturning or slip resistance analysis pull bar is made up of high strength steel strand.
Be applied with prestressing force on the overturning or slip resistance analysis pull bar, leave the space between itself and the bellows inwall.
Directly contact between the cast-in-place sections of said flexible temporary support and bridge pier pier shaft end face and beam body, but do not link.
Said flexible temporary support by under hold piece, unload carrier layer and on hold piece and stack gradually and form; Said unload carrier layer by have mobile material or be heated after be easy to melt, softening solid material fills and forms; Hold piece on said and hold down piece and bond by steel plate layer and block rubber intersecting and form; The said block plate that pushes up most that holds down piece extends and upwards is bent to form the spacing sidewall that unloads carrier layer to four limits, has the pod apertures that the filler of being convenient to unload carrier layer flows out on the said spacing sidewall.
Compared with prior art the utlity model has following characteristics and beneficial effect:
At first; The utility model is through adopting flexible temporary support and flexible anti-overturning devices; Can realize that the load that permanent bearing bears can progressively increase along with the propelling of cantilever casting construction progress, avoid the beam body to close up back problem because of the bigger structure time internal force of depression of supports generation when removing temporary consolidation to greatest extent.
Secondly, because the employing of the flexible temporary support of finished product is compared with existing cast-in-situ concrete temporary support, construction need not to build and the maintenance certain hour early stage, and the later stage need not to cut, and therefore saves the duration, easy construction; Because the flexible temporary support of finished product is independently one, separate in addition with anti-overturning devices, though with bridge pier and beam body between directly contact; But do not link; The temporary support set inside is unloaded carrier layer, thus can dismantle easily and recycle, thus can reduce construction cost.Simultaneously; Owing to cancelled the interim support bar that is arranged in the existing temporary consolidation system beyond the pier shaft; Eliminated because the construction dangerous matter sources that interim support bar brings is more, security risk big, big defective is disturbed in construction; The material cost and the assembling and disassembling construction cost of interim support bar are all higher, when not reducing safety of structure, cancel interim support bar and have significantly reduced construction costs especially from another angle.
Also have, in the anti-overturning devices steel bundle is arranged in the bellows, utilize bellows that the concrete of steel Shu Yuliang body, pier shaft, cushion cap is kept apart; Avoided the steel bundle contaminated; Simultaneously can sealing stretch-draw end after stretch-draw, but can not press the object of annotating sealing to bellows interior, this has guaranteed whole anti-overturning devices except the function that anchoring and stable beam body are arranged; Also have following function: temporary support, permanent bearing are compressed because bearing the newly-increased load of beam body; Thereby the generation depression causes that promptly the beam body descends, and the direction that the beam body descends is consistent with the retraction direction of steel bundle under the prestressing force effect; And prestressed strand is not because handled by mud jacking; So steel Shu Buhui stops the decline of beam body, the inner bellows of annotating sealing of pressing itself can be compressed distortion, and this has just realized that the confrontation between systems device that topples will have compressible requirement.
The utility model can be widely used in the temporary support in continuous beam cantilever casting construction stage.
Description of drawings
Below in conjunction with accompanying drawing the utility model is done further detailed explanation.
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is flexible temporary support detail of construction one.
Fig. 4 is flexible temporary support detail of construction two.
The flexible temporary support of Reference numeral: 1-, 1.1-be last hold hold piece under piece, the 1.2-, 1.3-unloads the cast-in-place sections of carrier layer, the spacing sidewall of 1.4-, 1.5-pod apertures, 1.6-gap, the pier shaft of 2-bridge pier, the permanent bearing of 3-, 4-anti-overturning devices, 4.1-overturning or slip resistance analysis pull bar, 4.2-bellows, 4.3-space, 5-beam body, the cushion cap of 6-bridge pier.
The specific embodiment
Embodiment is referring to illustrated in figures 1 and 2; The novel temporary consolidation system that a kind of bridge construction uses; Comprise 1 space, temporary support space and 4 spaces, anti-overturning devices space; 1 space, said temporary support space is placed between 5 spaces, cast-in-place sections space of pier shaft space 2 space end faces and beam body of bridge pier, and 4 spaces, said anti-overturning devices space are the slender type assembly, and the one of which end is embedded in 6 spaces, cushion cap space of 2 spaces, pier shaft space or bridge pier of bridge pier; The other end is anchored in 5 spaces, cast-in-place sections space of beam body; Be supported with 3 spaces, permanent bearing space between the pier shaft space 2 space end faces of bridge pier and 5 spaces, cast-in-place sections space of beam body, it is characterized in that: said temporary support and 4 spaces, anti-overturning devices space are two rows, and temporary support, anti-overturning devices all are symmetrical in the suitable bridge of beam body to axis arranged; Simultaneously, also be symmetrical in the direction across bridge axis arranged of permanent bearing; 4 spaces, said anti-overturning devices space are made up of 4.1 spaces, overturning or slip resistance analysis pull bar space and 4.2 spaces, bellows space that are enclosed within outside, 4.1 spaces, overturning or slip resistance analysis pull bar space; Said temporary support is 1 space, flexible temporary support space that steel plate and rubber are formed.
4.1 spaces, said overturning or slip resistance analysis pull bar space are the steel bundle of being made up of high strength steel strand.
In the use of the novel temporary consolidation system of this kind, promptly to play in the process of temporary consolidation effect in fixed system, overturning or slip resistance analysis pull bar space is applied with prestressing force on 4.1 spaces all the time.The object of annotating sealing is not pressed in inside, 4.2 space, bellows space, makes between its inwall and 4.1 spaces, overturning or slip resistance analysis pull bar space and leaves 4.3 spaces, space, space.
Directly contact between the pier shaft space 2 space end faces of 1 space, said flexible temporary support space and bridge pier and 5 spaces, cast-in-place sections space of beam body, but do not link.
Temporary support can be temporarily fixed at the pier shaft end face with bolt etc.
Said flexible temporary support 1 is referring to Fig. 3 and Fig. 4, by under hold piece 1.2, unload carrier layer 1.3 and on hold piece 1.1 and stack gradually and form, the said filler that unloads carrier layer be sand, liquid etc. have mobile material or be heated after be easy to melt, softening solid material.Hold piece 1.1 on said and hold piece 1.2 down and formed by steel plate layer and block rubber intersecting bonding, said block rubber is whole to be wrapped up whole steel plate layers or partly wraps up the steel plate layer.The said block plate that pushes up most that holds down piece 1.2 extends and upwards is bent to form the spacing sidewall 1.4 that unloads carrier layer to four limits, has the pod apertures 1.5 that the filler of being convenient to unload carrier layer flows out on the said spacing sidewall 1.4.The said filler that unloads carrier layer 1.3 be sand, liquid etc. have mobile material or be heated after be easy to melt, softening solid material.The solid material that is easy to after being heated to melt and soften is certain plastics, sulphur-bonded mortar etc. for example.If adopt husky, or adopt fluent material to be used as unloading layer material, spacing sidewall 1.4 exceeds and unloads carrier layer 1.3 certain height, and unloads between carrier layer and the spacing sidewall and do not reserve the space.If adopt the monoblock solid material that is easy to after being heated melt or soften, include heating wire as the unloading layer material; It is low that the aspect ratio of spacing sidewall is unloaded carrier layer; And spacing sidewall and reservation 1.6 spaces, certain clearance space, side of unloading carrier layer, with the softening back compressive strain of convenient unloading layer material; And, have the power line hole on the said spacing sidewall 1.4.If adopt fluent material to be used as unloading layer material, unload the cavity structure body that carrier layer adopts independent reservation plughole, inside fills the liquid discharged material; The material of this cavity structure body has suitable intensity, and material itself can not damaged by pressure by the beam body; Simultaneously, the cavity structure body can be compressed, shrivel after the removal discharged material by the beam body, can not stop the beam body to fall; During installation, unload carrier layer and be placed in down and hold the unloading in the carrier layer groove of piece, the plughole that the cavity structure body is reserved is over against the pod apertures of holding down on the spacing sidewall of piece.
Size relationship between the concrete structure of bellows and it and the overturning or slip resistance analysis pull bar is deferred to the bellows of traditional pre-stress system.The steel strand radical of its quantity and each bundle, tension stress all confirm according to overturning or slip resistance analysis result of calculation, during the tension stress of calculating should be controlled at whole cantilever construction, removing before the temporary consolidation not can being compressed in the scope that depression loses fully because of temporary support.
The operating principle of the utility model: in construction period, temporary support bears deadweight of beam body and the load above the beam body with permanent bearing.Because flexible temporary support has certain compressibilty; Can be increased compression along with the increase of beam body load; And have flexibility by the steel bundle that high strength steel strand is formed, because annotated sealing, so can not stop the beam body to be compressed and corresponding whereabouts because of flexible temporary support, permanent bearing by pressure; This just guaranteed to make permanent bearing and temporary support synchronously the space or slightly one step ahead the space bear the newly-increased load of beam body, the depression of permanent bearing is progressively taken place along with the propelling of cantilever construction.Adopt " synchronously " still is " slightly one step ahead " actually, can be decided by the design compressibilty of permanent bearing, temporary support.After accomplishing cantilever construction; Before closing up construction; Promptly unload carrier layer through the height adjustment mechanism on the temporary support temporary support is reduced, let before closing up permanent bearing bear beam body load and top load thereof fully, realize that the compression subsidence of permanent bearing farthest takes place thereby be implemented in.After the completion continuous beam closes up construction, put an overturning or slip resistance analysis steel bundle, remove prestressing force, cut off that section overturning or slip resistance analysis steel bundle between beam body bottom surface and the bridge pier pier shaft end face, remove, remove temporary support, reach the purpose of final releasing temporary consolidation.
Claims (5)
1. the novel temporary consolidation system used of a bridge construction; Comprise temporary support (1) and anti-overturning devices (4); Said temporary support (1) is placed between the cast-in-place sections (5) of pier shaft (2) end face and beam body of bridge pier, and said anti-overturning devices (4) is the slender type assembly, and the one of which end is embedded in the cushion cap (6) of pier shaft (2) or bridge pier of bridge pier; The other end is anchored in the cast-in-place sections (5) of beam body; Be supported with permanent bearing (3) between the cast-in-place sections (5) of the pier shaft of bridge pier (2) end face and beam body, it is characterized in that: said temporary support and anti-overturning devices (4) are two rows, and temporary support, anti-overturning devices all are symmetrical in the suitable bridge of beam body to axis arranged; Simultaneously, also be symmetrical in the direction across bridge axis arranged of permanent bearing; Said anti-overturning devices (4) is made up of overturning or slip resistance analysis pull bar (4.1) and the bellows (4.2) that is enclosed within overturning or slip resistance analysis pull bar (4.1) outside; Said temporary support is the flexible temporary support (1) that steel plate and rubber are formed.
2. the novel temporary consolidation system that a kind of bridge construction according to claim 1 uses is characterized in that: the steel bundle that said overturning or slip resistance analysis pull bar (4.1) is made up of high strength steel strand.
3. the novel temporary consolidation system that a kind of bridge construction according to claim 1 uses, it is characterized in that: the overturning or slip resistance analysis pull bar is applied with prestressing force on (4.1), leaves space (4.3) between itself and bellows (4.2) inwall.
4. the novel temporary consolidation system that a kind of bridge construction according to claim 1 uses is characterized in that: directly contact between the cast-in-place sections (5) of said flexible temporary support (1) and bridge pier pier shaft (2) end face and beam body, but do not link.
5. the novel temporary consolidation system that a kind of bridge construction according to claim 1 uses; It is characterized in that: said flexible temporary support (1) by under hold piece (1.2), unload carrier layer (1.3) and on hold piece (1.1) and stack gradually and form; Said unload carrier layer (1.3) by have mobile material or be heated after be easy to melt, softening solid material fills and forms; Hold on said piece (1.1) and under hold piece (1.2) and form by steel plate layer and block rubber intersecting bonding; The said block plate that pushes up most that holds down piece (1.2) extends and upwards is bent to form the spacing sidewall (1.4) that unloads carrier layer to four limits, has the pod apertures (1.5) that the filler of being convenient to unload carrier layer flows out on the said spacing sidewall (1.4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120562863XU CN202482777U (en) | 2011-12-29 | 2011-12-29 | Novel temporary solidification system for bridge construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120562863XU CN202482777U (en) | 2011-12-29 | 2011-12-29 | Novel temporary solidification system for bridge construction |
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| CN202482777U true CN202482777U (en) | 2012-10-10 |
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| CN201120562863XU Expired - Lifetime CN202482777U (en) | 2011-12-29 | 2011-12-29 | Novel temporary solidification system for bridge construction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102433845A (en) * | 2011-12-29 | 2012-05-02 | 广东冠粤路桥有限公司 | Novel temporary solidification system used for continuous beam cantilever construction |
| CN109371807A (en) * | 2018-09-28 | 2019-02-22 | 励吾(厦门)科技有限公司 | It is a kind of can quick transformation bridge |
| CN113235459A (en) * | 2021-06-17 | 2021-08-10 | 安徽省路港工程有限责任公司 | Assembled main bridge pier roof beam concreties device temporarily |
-
2011
- 2011-12-29 CN CN201120562863XU patent/CN202482777U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102433845A (en) * | 2011-12-29 | 2012-05-02 | 广东冠粤路桥有限公司 | Novel temporary solidification system used for continuous beam cantilever construction |
| CN109371807A (en) * | 2018-09-28 | 2019-02-22 | 励吾(厦门)科技有限公司 | It is a kind of can quick transformation bridge |
| CN109371807B (en) * | 2018-09-28 | 2021-03-26 | 励吾(厦门)科技股份有限公司 | Bridge structure system capable of being rapidly transformed |
| CN113235459A (en) * | 2021-06-17 | 2021-08-10 | 安徽省路港工程有限责任公司 | Assembled main bridge pier roof beam concreties device temporarily |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201028 Address after: 501-2, 1261 Panyu Avenue North, Dalong street, Panyu District, Guangzhou City, Guangdong Province Patentee after: Guangdong Guandi Construction Co., Ltd Address before: Tianhe District Tianrun road Guangzhou City, Guangdong province 510635 No. 445 8 floor Patentee before: GUANGDONG GUANYUE HIGHWAY & BRIDGE Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |
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| CX01 | Expiry of patent term |