CN104526852A - Manufacturing method of beam bottom splicing steel die of T-shaped prefabricated beam - Google Patents
Manufacturing method of beam bottom splicing steel die of T-shaped prefabricated beam Download PDFInfo
- Publication number
- CN104526852A CN104526852A CN201410791634.3A CN201410791634A CN104526852A CN 104526852 A CN104526852 A CN 104526852A CN 201410791634 A CN201410791634 A CN 201410791634A CN 104526852 A CN104526852 A CN 104526852A
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- CN
- China
- Prior art keywords
- span centre
- centre line
- punching block
- steel plate
- supporting
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/02—Moulds with adjustable parts specially for modifying at will the dimensions or form of the moulded article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/26—Assemblies of separate moulds, i.e. of moulds or moulding space units, each forming a complete mould or moulding space unit independently from each other
- B28B7/266—Assemblies of separate moulds, i.e. of moulds or moulding space units, each forming a complete mould or moulding space unit independently from each other for making oblong objects, e.g. girders
Abstract
The invention discloses a manufacturing method of a beam bottom splicing steel die of a T-shaped prefabricated beam. The method includes the steps of embedding two rows of supporting pieces on a concrete foundation pedestal according to the distance of the central span of 736 mm, cutting 14# box iron into four parts with different lengths, welding the four parts into a supporting main rod, cutting 12# box iron according to widths, welding cut parts into a longitudinal supporting rod, welding 5# box iron and the longitudinal supporting rod into a whole with the four pieces of 5# box iron in one set to form a supporting bearing rod, flat laying and welding a supporting steel plate with the thickness of 10 mm onto the supporting bearing rod to complete the machining of steel die sections, and completing the manufacturing of the beam bottom splicing steel die of the T-shaped prefabricated beam after assembling, adjusting and inverted camber setting are conducted. The method has the advantages that the manufacturing method is simple, the length can be adjusted according to the beam shape of the T-shaped beam, the beam bottom splicing steel die can be detached to be recycled after the construction of a bridge is completed, and the production cost of the T-shaped prefabricated beam is saved.
Description
Technical field
The present invention relates to railway, the T-shaped bottom die of precast beam of highway, especially relate to the manufacture method of assembled punching block at the bottom of a kind of T-shaped Prefabricated bar.
Background technology
The conventional tee girder used in railway, highway is when precast plant is prefabricated, and beam bottom board all adopts the bed die of concrete bed.Because concrete bottom die in use repeatedly affects by the stretch-draw of T stress beam muscle, not easily restore to the original state at short notice after deforming, concrete bottom die can not have enough to meet the need utilization in next project under construction simultaneously, and waste is comparatively large, and manufacturing cost is high.
Summary of the invention
The object of the present invention is to provide a kind of structure simple, length can be regulated also can to have enough to meet the need the manufacture method of assembled punching block at the bottom of the T-shaped Prefabricated bar of use.
For achieving the above object, the present invention can take following technical proposals:
At the bottom of T-shaped Prefabricated bar of the present invention, the manufacture method of assembled punching block, comprises the steps:
The first step, makes built-in fitting
On concrete foundation pedestal, according to the pre-buried two row's support members of the distance of central span 736mm, the centre distance between adjacent two support members is 431mm ~ 808mm; Often arrange laying 38 ~ 45 support members;
Second step, makes punching block joint
Selecting 14# channel-section steel, be cut into the length of 1450mm, 4620mm, 5240mm, 6000mm tetra-kinds of specifications respectively, is then foursquare support mobile jib to being welded into cross section by it between two; Select 12# channel-section steel, after being cut into 800mm length, perpendicular separation is welded on the upper surface that two support mobile jib, forms longitudinal holding pole; Select 5# channel-section steel, after intercepting according to the length supporting mobile jib, the four one group length direction supporting mobile jib along it is placed in two ends and the middle part of longitudinal holding pole respectively, and is welded as a whole with longitudinal holding pole, is formed and supports pressure pin; Finally adopt the supporting steel plate paperbacked welding of thickness 10mm on support pressure pin, complete the processing of punching block joint;
3rd step, assembling, adjustment
According to prefabricated beam type, punching blocks different for length is saved segmentation in order and be placed on the built-in fitting of first step making, the center that pre-buried support member is arranged at two centers and two supporting mobile jibs that adjust is consistent, and the length measuring punching block at the bottom of the assembled back rest meets the demands; Measure the span centre line of center line as precast beam of beam length direction, be set to point minimum in inverted camber, then calculated the relative relief apart from 2000mm, 4000mm, 8000mm, 10000mm, 12000mm, 14000mm, 16300mm position, span centre interval and span centre position;
4th step, inverted camber is arranged
Measure the relative relief at span centre line position place, by low side cushioning adjustment steel plate between pre-buried support member and support mobile jib, when span centre line both sides are adjusted to sustained height, adjustment steel plate and pre-buried support member, support mobile jib are welded as a whole; Measure the absolute altitude apart from span centre line 2000mm place, and compare with span centre line position place, determine the thickness increasing adjustment steel plate, when distance span centre line 2000mm to be adjusted and span centre line position relative relief are for designing the discrepancy in elevation, span centre line is all increased adjustment steel plate on the pre-buried support member within the scope of span centre line 2000mm, and adjustment steel plate and pre-buried support member, support mobile jib are welded as a whole; According to said method, adjust the antiarch at diverse location place successively, until by complete for the adjustment of the antiarch value of punching block at the bottom of whole beam, namely complete the manufacture of assembled punching block at the bottom of T-shaped Prefabricated bar.
The supporting steel plate dual-side along its length at described punching block joint top is provided with rubber blanket or swallow-tail form rubber strip.
The invention has the advantages that preparation method is simple, can according to tee girder beam type adjustment length, after a bridge construction completes, assembled punching block at the bottom of beam detachably gets off to carry out turnover and utilizes, and has saved the production cost of T-shaped precast beam.
Accompanying drawing explanation
Fig. 1 is the top view of built-in fitting of the present invention.
Fig. 2 is the schematic enlarged-scale view of single pre-buried support member in Fig. 1.
Fig. 3 is the structural representation of punching block of the present invention joint.
Fig. 4 is that enlarged drawing is looked on a left side of Fig. 3.
Fig. 5 is the structure chart of assembled punching block at the bottom of the beam that manufactures of the present invention.
Fig. 6 is the A portion enlarged drawing of Fig. 5.
Fig. 7 be assembled punching block at the bottom of beam of the present invention and side form in conjunction with enlarged diagram.
Detailed description of the invention
The manufacture method of assembled punching block at the bottom of T-shaped Prefabricated bar of the present invention is described in detail below in conjunction with diagram.
The first step, makes built-in fitting
First casting concrete basis pedestal 101, when concrete initial set, the upper surface area of arranging the single support member of support member 102(according to the distance of central span 736mm pre-buried two on its surface is 440mm × 320mm), the upper surface of support member 102 will ensure and concrete surface level, should fixation be taked during installation, prevent support member 102 to be absorbed in concrete surface; The centre distance 431mm between two adjacent support members is put in two ends 1-4 ranking, the distance 556mm between the 5th array pitch the 4th row, the distance 808mm between adjacent two support members in middle part; Often arrange laying 45 support members, as Fig. 1, the shape of single support member is character "door" form structure, as shown in Figure 2;
Second step, makes punching block joint
As shown in Figure 3, Figure 4, selecting 14# channel-section steel, be cut into the length of 1450mm, 4620mm, 5240mm, 6000mm tetra-kinds of specifications respectively, is then foursquare support mobile jib 201 to being welded into cross section by it between two; Select 12# channel-section steel, after being cut into 800mm length, perpendicular separation is welded on the upper surface that two support mobile jib 201, forms longitudinal holding pole 202; Select 5# channel-section steel, after intercepting according to the length supporting mobile jib 201, the four one group length direction supporting mobile jib 201 along it is placed in two ends and the middle part of longitudinal holding pole 202 respectively, and is welded as a whole with longitudinal holding pole 202, is formed and supports pressure pin 203; Finally adopt supporting steel plate 204 paperbacked welding of thickness 10mm on support pressure pin 203, supporting steel plate 204 dual-side is along its length provided with rubber blanket or swallow-tail form rubber strip 205, ensure that junction connects tightr, can not spillage
,complete the processing of punching block joint; Punching block joint has four kinds of specifications, and wherein length 1450mm's and 6000mm is fixed knot, and two kinds of length 4620mm and 5240mm is adjustment joint, is adjusted the sequential combination of joint, can form the steel bed die of span 32M and 24M two kinds of beam type by two kinds of fixed knots and two kinds;
3rd step, assembling, adjustment
As shown in Figure 5, Figure 6, according to prefabricated beam type, punching blocks different for length is saved segmentation to be in order placed on the built-in fitting of first step making, puts order and be followed successively by 1450mm, 6000mm, 6000mm, 5240mm, 6000mm, 6000mm, 1450mm(32M beam type steel bed die) or 1450mm, 6000mm, 4620mm, 4620mm, 6000mm, 1450mm(24M beam type steel bed die); The center that adjustment two supports mobile jib 201 is consistent with the center of the pre-buried support member 102 of two rows, by steel tape adjustment steel bed die length, meets the needs of 32M beam type or 24 M beam type; Measure the span centre line of center line as precast beam of beam length direction, the point that namely inverted camber is minimum in arranging, the setting of inverted camber utilizes y=3.5/1630
2* X
2(32m beam type) or y=2.5/1230
2* X
2(in formula, y is the relative relief with span centre position to (24m beam type) formula, X is the length apart from span centre), calculate the relative relief apart from 2000mm, 4000mm, 8000mm, 10000mm, 12000mm, 14000mm, 16300mm position, span centre line interval and span centre position;
4th step, inverted camber is arranged
First spirit level is used to measure the relative relief of span centre position, the thickness that low side cushioning adjustment steel plate 301(between pre-buried support member 102 and support mobile jib 201 adjusts steel plate can be respectively 1mm, 2mm, 5mm, 10mm, size is 10cm*10cm), when span centre line both sides are adjusted to sustained height, adjustment steel plate 301 and pre-buried support member 102, support mobile jib 201 are welded as a whole; Then the absolute altitude apart from span centre line 2000mm place is measured, and compare with span centre line position place, determine the thickness increasing adjustment steel plate 301, when distance span centre line 2000mm to be adjusted and span centre line position relative relief are for designing the discrepancy in elevation, span centre line is all increased adjustment steel plate 301 on the pre-buried support member 102 within the scope of span centre line 2000mm, and adjustment steel plate 301 and pre-buried support member 102, support mobile jib 201 are welded as a whole; According to said method, adjust the antiarch at diverse location place successively, until by complete for the adjustment of the antiarch value of punching block at the bottom of whole beam, namely complete the manufacture of assembled punching block at the bottom of T-shaped Prefabricated bar; Before welding, should prepare enough the adjustment steel plate that thickness is 1mm, 2mm, 5mm, 10mm, size is 10cm*10cm.
Then swallow-tail form rubber strip or rubber blanket 205 are stuck on assembled punching block at the bottom of beam, installation side steel membrane 401, fix with end wire drawing bar 402 and top wire drawing bar 403, as shown in Figure 7.
The steel bed die of manufacture of the present invention only needs measurement bed die antiarch for ten times often using, if find that antiarch value exceedes scope of design, reply local is finely tuned; Steel bed die, when not using for a long time, should carry out oiling, prevent corrosion.
Finish using, with cutting machine segmentation cutting after, be transported to next construction site again weld after namely reusable.
Claims (2)
1. a manufacture method for assembled punching block at the bottom of T-shaped Prefabricated bar, is characterized in that: comprise the steps:
The first step, makes built-in fitting
On concrete foundation pedestal, according to the pre-buried two row's support members of the distance of central span 736mm, the centre distance between adjacent two support members is 431mm ~ 808mm; Often arrange laying 38 ~ 45 support members;
Second step, makes punching block joint
Selecting 14# channel-section steel, be cut into the length of 1450mm, 4620mm, 5240mm, 6000mm tetra-kinds of specifications respectively, is then foursquare support mobile jib to being welded into cross section by it between two; Select 12# channel-section steel, after being cut into 800mm length, perpendicular separation is welded on the upper surface that two support mobile jib, forms longitudinal holding pole; Select 5# channel-section steel, after intercepting according to the length supporting mobile jib, the four one group length direction supporting mobile jib along it is placed in two ends and the middle part of longitudinal holding pole respectively, and is welded as a whole with longitudinal holding pole, is formed and supports pressure pin; Finally adopt the supporting steel plate paperbacked welding of thickness 10mm on support pressure pin, complete the processing of punching block joint;
3rd step, assembling, adjustment
According to prefabricated beam type, punching blocks different for length is saved segmentation in order and be placed on the built-in fitting of first step making, the center that pre-buried support member is arranged at two centers and two supporting mobile jibs that adjust is consistent, and the length measuring punching block at the bottom of the assembled back rest meets the demands; Measure the span centre line of center line as precast beam of beam length direction, be set to point minimum in inverted camber, then calculated the relative relief apart from 2000mm, 4000mm, 8000mm, 10000mm, 12000mm, 14000mm, 16300mm position, span centre interval and span centre position;
4th step, inverted camber is arranged
Measure the relative relief at span centre line position place, by low side cushioning adjustment steel plate between pre-buried support member and support mobile jib, when span centre line both sides are adjusted to sustained height, adjustment steel plate and pre-buried support member, support mobile jib are welded as a whole; Measure the absolute altitude apart from span centre line 2000mm place, and compare with span centre line position place, determine the thickness increasing adjustment steel plate, when distance span centre line 2000mm to be adjusted and span centre line position relative relief are for designing the discrepancy in elevation, span centre line is all increased adjustment steel plate on the pre-buried support member within the scope of span centre line 2000mm, and adjustment steel plate and pre-buried support member, support mobile jib are welded as a whole; According to said method, adjust the antiarch at diverse location place successively, until by complete for the adjustment of the antiarch value of punching block at the bottom of whole beam, namely complete the manufacture of assembled punching block at the bottom of T-shaped Prefabricated bar.
2. the manufacture method of assembled punching block at the bottom of T-shaped Prefabricated bar according to claim 1, is characterized in that: the supporting steel plate dual-side along its length at described punching block joint top is provided with rubber blanket or swallow-tail form rubber strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410791634.3A CN104526852B (en) | 2014-12-19 | 2014-12-19 | The manufacture method of assembly punching block at the bottom of T-shaped Prefabricated bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410791634.3A CN104526852B (en) | 2014-12-19 | 2014-12-19 | The manufacture method of assembly punching block at the bottom of T-shaped Prefabricated bar |
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| Publication Number | Publication Date |
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| CN104526852A true CN104526852A (en) | 2015-04-22 |
| CN104526852B CN104526852B (en) | 2016-11-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109702881A (en) * | 2019-03-13 | 2019-05-03 | 秦山伟业建设集团有限公司 | A kind of large span pre-tensioning system T beam Precasting Pedestal Construction method |
| CN110528459A (en) * | 2019-09-11 | 2019-12-03 | 中交第四航务工程局有限公司 | A kind of beam type bed die of caisson wharf cast-in-situ creast wall |
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| JP2003025320A (en) * | 2001-07-18 | 2003-01-29 | Yamada Hiroshi | Method for manufacturing precast concrete member and molding frame used in the manufacturing method |
| CN101298172A (en) * | 2008-06-05 | 2008-11-05 | 北京中铁房山桥梁有限公司 | Tensioning force-separated movable casing sleeper mould |
| CN202826017U (en) * | 2012-08-15 | 2013-03-27 | 杨众 | Factory prefabricated side mold of ribbed plate steel shaped like a wild goose |
| CN203110097U (en) * | 2012-12-06 | 2013-08-07 | 中铁六局集团有限公司 | Mould of prefabricated concrete box girder |
| CN203485284U (en) * | 2013-09-29 | 2014-03-19 | 云南群能电力设备有限公司 | T-shaped beam steel formwork structure |
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2014
- 2014-12-19 CN CN201410791634.3A patent/CN104526852B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003025320A (en) * | 2001-07-18 | 2003-01-29 | Yamada Hiroshi | Method for manufacturing precast concrete member and molding frame used in the manufacturing method |
| CN101298172A (en) * | 2008-06-05 | 2008-11-05 | 北京中铁房山桥梁有限公司 | Tensioning force-separated movable casing sleeper mould |
| CN100558523C (en) * | 2008-06-05 | 2009-11-11 | 中铁十四局集团有限公司 | Tensioning force-separated movable casing sleeper mould |
| CN202826017U (en) * | 2012-08-15 | 2013-03-27 | 杨众 | Factory prefabricated side mold of ribbed plate steel shaped like a wild goose |
| CN203110097U (en) * | 2012-12-06 | 2013-08-07 | 中铁六局集团有限公司 | Mould of prefabricated concrete box girder |
| CN203485284U (en) * | 2013-09-29 | 2014-03-19 | 云南群能电力设备有限公司 | T-shaped beam steel formwork structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109702881A (en) * | 2019-03-13 | 2019-05-03 | 秦山伟业建设集团有限公司 | A kind of large span pre-tensioning system T beam Precasting Pedestal Construction method |
| CN109702881B (en) * | 2019-03-13 | 2021-04-23 | 秦山伟业建设集团有限公司 | Large-span pre-tensioning method T-beam bench construction method |
| CN110528459A (en) * | 2019-09-11 | 2019-12-03 | 中交第四航务工程局有限公司 | A kind of beam type bed die of caisson wharf cast-in-situ creast wall |
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| CN104526852B (en) | 2016-11-23 |
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