CN106976157A - A kind of post stretching precast beam pedestal for being applicable different length and cross sectional shape - Google Patents

A kind of post stretching precast beam pedestal for being applicable different length and cross sectional shape Download PDF

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Publication number
CN106976157A
CN106976157A CN201710260786.4A CN201710260786A CN106976157A CN 106976157 A CN106976157 A CN 106976157A CN 201710260786 A CN201710260786 A CN 201710260786A CN 106976157 A CN106976157 A CN 106976157A
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CN
China
Prior art keywords
pedestal
length
precast
medial
master
Prior art date
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.)
Pending
Application number
CN201710260786.4A
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Chinese (zh)
Inventor
胡峰强
蔡源介
熊进刚
杨书刚
彭爱红
丁友清
王军
袁志军
田钦
张爱萍
陈煜国
王靓妮
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Nanchang University
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Nanchang University
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Publication date
Application filed by Nanchang University filed Critical Nanchang University
Priority to CN201710260786.4A priority Critical patent/CN106976157A/en
Publication of CN106976157A publication Critical patent/CN106976157A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • B28B23/04Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • B28B23/04Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
    • B28B23/046Post treatment to obtain pre-stressed articles

Abstract

The invention discloses a kind of post stretching precast beam pedestal for being applicable different length and cross sectional shape, including two outboard end pedestals, two medial end pedestals and a master pedestal, end stand seat divides into Extended chemotherapy, each pedestal is made up of two parts, detachable, be combined into T beams and small box girder pedestal.The small box girder pedestal and T beam pedestals of two kinds of different lengths mainly are combined to form entirety by the present invention, reach that reduction pedestal is set, the purpose that reasonably optimizing Liang Chang is laid;Cost and resource have been saved simultaneously, are reduced the engineering time, have been accomplished to optimize pedestal in form on the basis of guarantee output.

Description

A kind of post stretching precast beam pedestal for being applicable different length and cross sectional shape
Technical field
The present invention relates to science of bridge building field, more particularly to a kind of it is applicable different length and the post stretching of cross sectional shape is prefabricated Beam pedestal, is highway, railway and a kind of precast beam field is used in municipal science of bridge building post stretching precast beam pedestal.
Background technology
With the fast development of China's economy, promote highway in China net, the railway network and urban road network constantly perfect, Its Bridge serves vital effect.The prefabricated construction of bridge can reduce the duration, save production cost, therefore prefabricated Liang Chang construction seems increasingly important.Pedestal is as the important component in prefabricated beam fabricating yard construction, often one in site operation Type pedestal is applied to prefabricated single length or section form beam, adds Liang Chang floor space and the engineering time, increases Cost of investment.It is therefore proposed that a kind of new pedestal can meet the prefabricated of different length and cross sectional shape beam simultaneously, it appears outstanding To be important.
It is made more than precasting yard pedestal of concrete cast-in-situ, compare steel pedestal, concrete pedestal has cost low, safety It is stable, it is simple in construction, the characteristics of easy construction, but generally require certain Production Time.It is therefore proposed that a kind of new pedestal can It is particularly important with reducing pedestal Production Time on the premise of construction requirement is met.
The bottom of the beam, wherein small box girder of two kinds of forms that prefabricated small box girder and T beams are named with respective cross sectional shape respectively Plate width is typically all wider than T beam base plate thickness, and the beam of two kinds of section forms is widely used in Bridges in Our Country construction.
The content of the invention
Present invention aims to overcome that there is provided one kind for the single limitation of the service form of existing post stretching precast beam pedestal The post stretching precast beam pedestal of different length, cross sectional shape is applicable, both accelerates speed of application, and cost-effective, highly effective, peace It is complete reliable.
The present invention is that the technical scheme for solving technical problem use is:
A kind of post stretching precast beam pedestal for being applicable different length and cross sectional shape, mainly includes master pedestal and end stand seat, and it is special Levy and be, described end stand seat includes medial end pedestal and outboard end pedestal, and master pedestal two ends set a medial extremity respectively Portion's pedestal, the outside of each medial end pedestal sets an outboard end pedestal, medial end pedestal and outboard end respectively again Lay pedestal Extended chemotherapy under pedestal respectively, medial end pedestal, outboard end pedestal and master pedestal include respectively T beams pedestal and Additional pedestal, described T beams pedestal and additional pedestal are arranged side by side and combine to form small box girder pedestal, and described additional pedestal is Easy dismounting structure, so as to realize that several different types are beam prefabricated on same pedestal according to engineering demand.
Further, the above-mentioned post stretching precast beam pedestal for being applicable different length and cross sectional shape, the outboard end Pedestal is arranged in master pedestal two ends outermost according to design requirement length, and two ends are arranged symmetrically, the beam longer for precast length.
Further, the above-mentioned post stretching precast beam pedestal for being applicable different length and cross sectional shape, the medial end Pedestal is arranged between outboard end pedestal and master pedestal according to design length requirement, and two ends are arranged symmetrically, for precast length Shorter beam.
Further, in the above-mentioned post stretching precast beam pedestal for being applicable different length and cross sectional shape, the master pedestal Between place arrangement camber is asked according to design, master pedestal is arranged in pedestal middle according to design requirement length, belongs to two kinds of differences The public pedestal of length precast beam.
Further, the above-mentioned post stretching precast beam pedestal for being applicable different length and cross sectional shape, the T beams pedestal and Separated between additional pedestal with geotextiles, and T beams pedestal sets some cross-tie holes with additional pedestal along longitudinal identical spacing.
Further, the above-mentioned post stretching precast beam pedestal for being applicable different length and cross sectional shape, the outboard end The hole for hoist of pedestal, medial end pedestal and the longitudinally disposed gap 10cm length of adjacent of master pedestal is used to lift by crane precast beam. Pedestal production order is followed successively by:T beam pedestals are first poured, including master pedestal and end pedestal, the additional pedestal composition of after-pouring Small box girder pedestal.
The above-mentioned post stretching precast beam pedestal for being applicable different length and cross sectional shape, its application process step is as follows:
A, the segmentation limit that pedestal composition form, classifying rationally master pedestal and medial and lateral end stand seat are laid according to prefabricated beam length.
In b, pedestal preparation process, first T beam pedestals are poured by template, then one are poured on T beam pedestals The readily removable additional pedestal one small box girder pedestal of formation removed.
C, carry out different length small box girder it is prefabricated and maintenance.The larger precast beam two ends of length are on outboard end pedestal Carry out construction prefabricated, it is prefabricated that the less precast beam two ends of length carry out construction on medial end pedestal.
D, after the completion of the prefabricated work of whole small box girders, remove additional pedestal, be transformed into T beam pedestals, carry out two kinds of differences The prefabricated and maintenance of length T beams.
The beneficial effects of the invention are as follows:1st, compared with prior art, benefit of the invention is to optimize pedestal structure form, is realized Four kinds of different lengths, beam prefabricated, highly effectives of different cross section form are met on one pedestal.2nd, the present invention has safe and reliable The characteristics of, lay Extended chemotherapy under the pedestal of end, it is ensured that pedestal two ends avoid generation excessive uneven during prestressed stretch-draw Sedimentation.3rd, The present invention reduces beam pedestal fabrication amount and precast beam engineering time, while reasonably optimizing Liang Chang places cloth Put, reduce construction cost.
Brief description of the drawings
Fig. 1 is the structural representation of the pedestal of the present invention.
Fig. 2 is the small box girder pedestal sectional view of Section A-A in Fig. 1.
Fig. 3 is the T beam pedestal sectional views of Section A-A in Fig. 1.
Fig. 4 is section B-B figure in Fig. 1.
In figure:1st, outboard end pedestal, 2, medial extremity pedestal, 3, master pedestal, 4, hole for hoist, 5, after pour piece, 6, pedestal Extended chemotherapy, 7, small box girder pedestal, 8, T beam pedestals, 9, additional pedestal, 10, channel-section steel, 11, pedestal steel plate, 12, tie rod hole, 13, Rubber stops slurry bar.
Embodiment
The invention will be further described with reference to the accompanying drawings and detailed description.
As Figure 1-4, a kind of post stretching precast beam pedestal for being applicable different length and cross sectional shape, mainly including main Seat 3 and end stand seat, it is characterised in that described end stand seat includes medial end pedestal 2 and outboard end pedestal 1, the two ends of master pedestal 3 One medial end pedestal 2 is set respectively, and the outside of each medial end pedestal 2 sets an outboard end pedestal 1 respectively again, Lay pedestal Extended chemotherapy 6 under medial end pedestal 2 and outboard end pedestal 1 respectively, medial end pedestal 2, outboard end pedestal 1 with And master pedestal 3 includes T beams pedestal 8 and additional pedestal 9 respectively, described T beams pedestal 8 and additional pedestal 9 are arranged side by side and combined Small box girder pedestal 7 is formed, described additional pedestal 9 is easy dismounting structure, with geotechnique between the T beams pedestal 8 and additional pedestal 9 Cloth is separated, and T beams pedestal 8 and additional pedestal 9 set cross-tie hole 12 along longitudinal pitch same distance, can be in same pedestal On realize that several different types are beam prefabricated.
The outboard end pedestal 1 is arranged symmetrically in the two ends outermost of master pedestal 3 according to design requirement length, for prefabricated The longer beam of length.
The medial end pedestal 2 according to design length requirement be arranged symmetrically in outboard end pedestal 1 and master pedestal 3 it Between, the beam shorter for precast length.
Arrangement camber is sought in the middle of master pedestal 3 according to design, and master pedestal 3 is arranged in platform according to design requirement length Seat middle, is the public pedestal of multi-form precast beam.
The outboard end pedestal 1, medial end pedestal 2 and the longitudinally disposed gap 10cm length of adjacent of master pedestal 3 Hole for hoist 4, for lifting by crane precast beam.Pedestal production order is followed successively by:T beam pedestals are first poured, including master pedestal and end Portion's pedestal;Additional pedestal composition small box girder pedestal is poured again.
Its specific application and site operation are described as follows:
Leveling first is rolled into place, foundation bearing capacity, which is met, to be required, and using more than C20 concrete hardenings place.On the outside of inside Excavation of foundation pit is carried out in the range of the pedestal Extended chemotherapy of end, reinforcing bar is installed, C30 concrete is poured, pedestal Extended chemotherapy 6 is formed.
T beam pedestal reinforcing bars are installed, pre-buried hard plastic tube forms tie rod hole 12, and pedestal longitudinal direction two sides are pre-buried to install channel-section steel 10, Outwardly, upper leg is concordant with the top of pedestal concrete surface for channel-section steel opening direction level.Channel-section steel embeds 30mm × 30mm rubber and stops slurry Bar 13, master pedestal 3 is according to design requirement in middle preset antiarch.Paint marks are used in pedestal longitudinal direction both sides every 10cm, are easy to Control beam length.Pour C30 concrete formation T beams pedestal 8, maintenance shaping.
Pedestal top surface piecemeal lays 6mm steel plates 11 as precast beam bottom template, wherein also being used at hole for hoist 4 The covering of 6mm steel plates is connected.Each steel plate joining place of pedestal should keep concordant.
Additional pedestal reinforcing bar is installed on T beams pedestal 8, pre-buried channel-section steel 10, spreading tie rod hole 12 is poured after and put at piece 5 Put geotextiles separating T beams pedestal 8 and additional pedestal 9.Then C30 concrete is poured, small box girder pedestal 7 is formed.
For the precast beam of two kinds of different cross section forms, prefabricated small box girder is first poured, and need selection different according to construction Length beam carries out prefabricated.The Small Precast Box soffit of girder, the overall framework of steel reinforcement of bottom plate are hoisted at pedestal by gantry, prefabricated small box girder The symmetrically placed outboard end pedestal 1 in framework of steel reinforcement two ends or medial end pedestal 2, then carry out model sheetinstallat, roof steel bar and hang It is prefabricated that peace, concreting, pre-stress construction etc. complete small box girder.
After the completion of small box girder is prefabricated, pedestal steel plate 11 is removed, additional pedestal is removed, T beam pedestals are formed.Rubber stops slurry bar 13 At embedded grain steel 10, and the 6mm steel plates 11 of dimension are laid, complete small box girder pedestal 7 to the conversion of T beams pedestal 8.
T beam reinforcement cages are hoisted at pedestal by gantry, and need selection different length beam to carry out in advance according to construction System.The symmetrically placed two ends outboard end pedestal 1 of T beam reinforcement cages or medial end pedestal 2, then carry out model sheetinstallat, top plate It is beam prefabricated that reinforcing bar hangs the completion such as peace, concreting, prestress engineering T.

Claims (7)

1. a kind of post stretching precast beam pedestal for being applicable different length and cross sectional shape, mainly includes master pedestal and end stand seat, its It is characterised by, described end stand seat includes medial end pedestal and outboard end pedestal, and master pedestal two ends set an inner side respectively End pedestal, the outside of each medial end pedestal sets an outboard end pedestal, medial end pedestal and outside respectively again Pedestal Extended chemotherapy is laid under end stand seat respectively, medial end pedestal, outboard end pedestal and master pedestal include T beam pedestals respectively With additional pedestal, described T beams pedestal and additional pedestal are arranged side by side and combine to form small box girder pedestal, described additional pedestal For Demountable.
2. the post stretching precast beam pedestal according to claim 1 for being applicable different length and cross sectional shape, it is characterised in that: The outboard end pedestal is arranged in master pedestal two ends outermost according to design requirement length, and two ends are arranged symmetrically, for prefabricated The longer beam of length.
3. the post stretching precast beam pedestal according to claim 1 for being applicable different length and cross sectional shape, it is characterised in that: The medial end pedestal is arranged between outboard end pedestal and master pedestal according to design length requirement, and two ends are arranged symmetrically, The beam shorter for precast length.
4. the post stretching precast beam pedestal according to claim 1 for being applicable different length and cross sectional shape, it is characterised in that: The master pedestal middle arrangement camber is asked according to design.
5. the post stretching precast beam pedestal according to claim 1 for being applicable different length and cross sectional shape, it is characterised in that: Separated between the T beams pedestal and additional pedestal with geotextiles, and if T beams pedestal spacing setting identical with additional pedestal edge longitudinal direction Dry cross-tie hole.
6. the post stretching precast beam pedestal according to claim 1 for being applicable different length and cross sectional shape, it is characterised in that: The hole for hoist of the outboard end pedestal, medial end pedestal and the longitudinally disposed gap 10cm length of adjacent of master pedestal.
7. the post stretching precast beam pedestal according to claim 1 for being applicable different length and cross sectional shape, its application process Step is as follows:
A, the segmentation limit that pedestal composition form, classifying rationally master pedestal and medial and lateral end stand seat are laid according to prefabricated beam length;
In b, pedestal preparation process, first T beam pedestals are poured by template, then poured on T beam pedestals one it is readily removable The additional pedestal one small box girder pedestal of formation removed;
C, progress different length prefabricated box -beam and maintenance;The larger precast beam two ends of length carry out constructing pre- on outboard end pedestal System, it is prefabricated that the less precast beam two ends of length carry out construction on medial end pedestal;
D, after the completion of the prefabricated work of whole small box girders, dismantle additional pedestal, be transformed into T beam pedestals, carry out two kinds of different length T The prefabricated and maintenance of beam.
CN201710260786.4A 2017-04-20 2017-04-20 A kind of post stretching precast beam pedestal for being applicable different length and cross sectional shape Pending CN106976157A (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710260786.4A CN106976157A (en) 2017-04-20 2017-04-20 A kind of post stretching precast beam pedestal for being applicable different length and cross sectional shape

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107901216A (en) * 2017-11-30 2018-04-13 中国冶集团有限公司 A kind of production method of the general pedestal of mountainous area highway T beams
CN108385504A (en) * 2018-02-07 2018-08-10 中交公局第二工程有限公司 A kind of variable cross-section beam sections short-term precast assembly method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107901216A (en) * 2017-11-30 2018-04-13 中国冶集团有限公司 A kind of production method of the general pedestal of mountainous area highway T beams
CN108385504A (en) * 2018-02-07 2018-08-10 中交公局第二工程有限公司 A kind of variable cross-section beam sections short-term precast assembly method

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