CN104526852B - The manufacture method of assembly punching block at the bottom of T-shaped Prefabricated bar - Google Patents
The manufacture method of assembly punching block at the bottom of T-shaped Prefabricated bar Download PDFInfo
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- CN104526852B CN104526852B CN201410791634.3A CN201410791634A CN104526852B CN 104526852 B CN104526852 B CN 104526852B CN 201410791634 A CN201410791634 A CN 201410791634A CN 104526852 B CN104526852 B CN 104526852B
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- punching block
- span centre
- welded
- centre line
- length
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- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses the manufacture method of assembly punching block at the bottom of a kind of T-shaped Prefabricated bar, first on concrete foundation pedestal, according to the pre-buried two row's support members of the distance of central span 736mm；Select 14# channel-section steel, be cut into the length of four kinds of specifications respectively, be welded into support mobile jib；After 12# channel-section steel intercepts according to width, it is welded into longitudinal holding pole；Four one group of 5# channel-section steel is welded as a whole with longitudinal holding pole, is formed and supports pressure pin；Supporting on pressure pin with the supporting steel plate paperbacked welding of thickness 10mm, completing the processing of punching block joint；Through assembling, adjust, after inverted camber is arranged, complete the manufacture of assembly punching block at the bottom of T-shaped Prefabricated bar.It is an advantage of the current invention that manufacture method is simple, can adjust length according to tee girder beam type, after a bridge construction completes, assembly 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.
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 assembly 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 uses the bed die of concrete bed.Owing to concrete bottom die is the most repeatedly affected by the stretch-draw of T stress beam muscle, being difficult to restore to the original state at short notice after deforming, concrete bottom die can not utilize in next project under construction in turnover simultaneously, and waste is relatively big, and manufacturing cost is high.
Summary of the invention
It is an object of the invention to provide a kind of simple in construction, the manufacture method of assembly punching block at the bottom of length being regulated and the T-shaped Prefabricated bar of use can being had enough to meet the need.
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 assembly 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 row's 38 ~ 45 support members of laying；
Second step, makes punching block joint
Select 14# channel-section steel, be cut into the length of tetra-kinds of specifications of 1450mm, 4620mm, 5240mm, 6000mm respectively, be then foursquare support mobile jib to being welded into transverse section two-by-two by it；Selecting 12# channel-section steel, after being cut into 800mm length, perpendicular separation is welded on two upper surfaces supporting mobile jib, forms longitudinal holding pole；Select 5# channel-section steel, after intercepting according to the length supporting mobile jib, four one group two ends and the middle part being placed in longitudinal holding pole along its length direction supporting mobile jib respectively, and be welded as a whole with longitudinal holding pole, formed and support pressure pin；The supporting steel plate paperbacked welding finally using thickness 10mm is supporting on pressure pin, completes the processing of punching block joint；
3rd step, assembles, adjusts
According to prefabricated beam type, punching blocks different for length saving segmentation in order and is placed on the built-in fitting that the first step makes, the center adjusting two support mobile jibs is consistent with the center of the two pre-buried support members of row, measures the length of punching block at the bottom of the assembled back rest and meets requirement；Measure the center line span centre line as precast beam of beam length direction, it is set to point minimum in inverted camber, then calculates the relative relief away from 2000mm, 4000mm, 8000mm, 10000mm, 12000mm, 14000mm, 16300mm position, span centre interval with span centre position；
4th step, inverted camber is arranged
Measure the relative relief at span centre line position, low side at pre-buried support member and is supported cushioning adjustment steel plate between 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 at span centre line 2000mm, and compare at span centre line position, determine and increase the thickness adjusting steel plate, to be adjusted away from span centre line 2000mm and span centre line position relative relief for the design discrepancy in elevation time, adjust steel plate by all increasing on span centre line to the pre-buried support member in the range 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, being sequentially adjusted in the antiarch of various location, until adjusting complete by the antiarch value of punching block at the bottom of whole beam, i.e. completing the manufacture of assembly punching block at the bottom of T-shaped Prefabricated bar.
The supporting steel plate at described punching block joint top dual-side along its length is provided with rubber blanket or swallow-tail form rubber strip.
It is an advantage of the current invention that manufacture method is simple, can adjust length according to tee girder beam type, after a bridge construction completes, assembly 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 the left view enlarged drawing of Fig. 3.
Fig. 5 is the structure chart of assembly punching block at the bottom of the beam that the present invention manufactures.
Fig. 6 is the A portion enlarged drawing of Fig. 5.
Fig. 7 be the present invention beam at the bottom of the combination enlarged diagram of assembly punching block and side form.
Detailed description of the invention
The manufacture method of assembly 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, it is 440mm × 320mm on its surface according to the upper surface area of the pre-buried two row's single support members of support member 102(of the distance of central span 736mm), the upper surface of support member 102 to ensure and concrete surface level, fixation should be taked during installation, prevent support member 102 to be absorbed in concrete surface；Centre distance 431mm between two adjacent support members, distance 556mm between the 5th array pitch the 4th row, distance 808mm between adjacent two support members in middle part are put in 1-4 ranking in two ends；Often row lays 45 support members, such as Fig. 1, single support member be shaped as character "door" form structure, as shown in Figure 2；
Second step, makes punching block joint
As shown in Figure 3, Figure 4, select 14# channel-section steel, be cut into the length of tetra-kinds of specifications of 1450mm, 4620mm, 5240mm, 6000mm respectively, be then foursquare support mobile jib 201 to being welded into transverse section two-by-two by it；Selecting 12# channel-section steel, after being cut into 800mm length, perpendicular separation is welded on two upper surfaces supporting mobile jib 201, forms longitudinal holding pole 202；Select 5# channel-section steel, after intercepting according to the length supporting mobile jib 201, four one group two ends and the middle part being placed in longitudinal holding pole 202 along its length direction supporting mobile jib 201 respectively, and be welded as a whole with longitudinal holding pole 202, formed and support pressure pin 203；Supporting steel plate 204 paperbacked welding finally using thickness 10mm is supporting on pressure pin 203, and supporting steel plate 204 dual-side along its length is provided with rubber blanket or swallow-tail form rubber strip 205, it is ensured that junction connects tightr, will not spillage,Complete the processing of punching block joint；Punching block joint has four kinds of specifications, wherein length 1450mm and 6000mm for two kinds of fixed knot, length 4620mm and 5240mm for adjusting joint, adjusted the sequential combination of joint by two kinds of fixed knots and two kinds, may make up span 32M and the steel bed die of two kinds of beam type of 24M；
3rd step, assembles, adjusts
As shown in Figure 5, Figure 6, according to prefabricated beam type, punching blocks different for length saves segmentation in order be placed on the built-in fitting that the first step makes, 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 adjusting two support mobile jibs 201 is consistent with the center of the two pre-buried support members of row 102, adjusts steel bed die length with ribbon, meets 32M beam type or the needs of 24 M beam type；Measuring the center line span centre line as precast beam of beam length direction, point minimum during i.e. inverted camber is arranged, the setting of inverted camber is to utilize y=3.5/16302 *X2(32m beam type) or y=2.5/12302 *X2(in formula, y is and the relative relief of span centre position (24m beam type) formula, X is the length away from span centre), calculate the relative relief away from 2000mm, 4000mm, 8000mm, 10000mm, 12000mm, 14000mm, 16300mm position, span centre line interval with span centre position；
4th step, inverted camber is arranged
The relative relief of span centre position is measured first by level gauge, the thickness that low side cushioning between pre-buried support member 102 and support mobile jib 201 adjusts steel plate 301(adjustment 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 at span centre line 2000mm is measured, and compare at span centre line position, determine and increase the thickness adjusting steel plate 301, to be adjusted away from span centre line 2000mm and span centre line position relative relief for the design discrepancy in elevation time, adjust steel plate 301 by all increasing on span centre line to the pre-buried support member 102 in the range 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, being sequentially adjusted in the antiarch of various location, until adjusting complete by the antiarch value of punching block at the bottom of whole beam, i.e. completing the manufacture of assembly 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 assembly punching block at the bottom of beam, installation side steel membrane 401, fix, as shown in Figure 7 with end wire drawing bar 402 and top pull screw mandrel 403.
The steel bed die of manufacture of the present invention only needs to measure a bed die antiarch often using ten times, if it find that antiarch value exceedes scope of design, reply local is finely adjusted；Steel bed die, when not using for a long time, should carry out oiling, prevent corrosion.
Use complete, after cutting with cutting machine segmentation, be transported to after next construction site is welded again the most reusable.
Claims (2)
1. the manufacture method of assembly punching block at the bottom of a T-shaped Prefabricated bar, it is characterised 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 row's 38 ~ 45 support members of laying；
Second step, makes punching block joint
Select 14# channel-section steel, be cut into the length of tetra-kinds of specifications of 1450mm, 4620mm, 5240mm, 6000mm respectively, be then foursquare support mobile jib to being welded into transverse section two-by-two by it；Selecting 12# channel-section steel, after being cut into 800mm length, perpendicular separation is welded on two upper surfaces supporting mobile jib, forms longitudinal holding pole；Select 5# channel-section steel, after intercepting according to the length supporting mobile jib, four one group two ends and the middle part being placed in longitudinal holding pole along its length direction supporting mobile jib respectively, and be welded as a whole with longitudinal holding pole, formed and support pressure pin；The supporting steel plate paperbacked welding finally using thickness 10mm is supporting on pressure pin, completes the processing of punching block joint；
3rd step, assembles, adjusts
According to prefabricated beam type, punching blocks different for length saving segmentation in order and is placed on the built-in fitting that the first step makes, the center adjusting two support mobile jibs is consistent with the center of the two pre-buried support members of row, measures the length of punching block at the bottom of the assembled back rest and meets requirement；Measure the center line span centre line as precast beam of beam length direction, it is set to point minimum in inverted camber, then calculates the relative relief away from 2000mm, 4000mm, 8000mm, 10000mm, 12000mm, 14000mm, 16300mm position, span centre interval with span centre position；
4th step, inverted camber is arranged
Measure the relative relief at span centre line position, low side at pre-buried support member and is supported cushioning adjustment steel plate between 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 at span centre line 2000mm, and compare at span centre line position, determine and increase the thickness adjusting steel plate, to be adjusted away from span centre line 2000mm and span centre line position relative relief for the design discrepancy in elevation time, adjust steel plate by all increasing on span centre line to the pre-buried support member in the range of span centre line 2000mm, and adjustment steel plate and pre-buried support member, support mobile jib are welded as a whole；The concrete steps arranged according to above-mentioned inverted camber, are sequentially adjusted in the antiarch of various location, until adjusting complete by the antiarch value of punching block at the bottom of whole beam, i.e. complete the manufacture of assembly punching block at the bottom of T-shaped Prefabricated bar.
The manufacture method of assembly punching block at the bottom of T-shaped Prefabricated bar the most according to claim 1, it is characterised in that: the supporting steel plate at described punching block joint top dual-side along its length is provided with rubber blanket or swallow-tail form rubber strip.
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| 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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| 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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| CN104526852A CN104526852A (en) | 2015-04-22 |
| CN104526852B true CN104526852B (en) | 2016-11-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
Citations (5)
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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 |
-
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 |
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