CN1097229A - Overhead site-casting method for broad-span presrtressed arch plate - Google Patents
Overhead site-casting method for broad-span presrtressed arch plate Download PDFInfo
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- CN1097229A CN1097229A CN 93108179 CN93108179A CN1097229A CN 1097229 A CN1097229 A CN 1097229A CN 93108179 CN93108179 CN 93108179 CN 93108179 A CN93108179 A CN 93108179A CN 1097229 A CN1097229 A CN 1097229A
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Abstract
The invention provides a kind of overhead site-casting method for broad-span presrtressed arch plate, belong to technical field of building construction.In the wall top beam outside through groove anchoring stretch-draw steel plate, in the setting of collar tie beam inner ring by several horizontal support bars that withstand two opposite collar tie beam inwalls in the span direction and horizontal support system that vertical tie-rod is formed, tension reinforcing steel bar on the stretch-draw steel plate is then set up behind template, support, the scaffold by commonsense method and to be watered into prestressed large-span arch bar roof at the scene, high-altitude.Have and need not take prefabricated place, do not need the lifting of large-scale hanging device, carrying, reduce labour intensity and reduce cost, and can the advantage of where distinguishing construction in office.
Description
The invention belongs to technical field of building construction.
Present large-span prestressed arched roof plate (silo top etc.) job practices all adopts elder generation in the good prestress arch bar roof truss of surface production, and then it is lifted on the relevant position, high-altitude.This method floor space when prefabricated is big, and lifting, transportation difficulty must have large-scale handling appliance, the cost height.
The objective of the invention is to overcome the deficiency of prior art, provide a kind of scene, ground that need not take to carry out prefabricatedly, do not need main equipment lifting, carrying, laborsaving, the large-span prestressed arch bar high-altitude cast-in-situ construction method that reduces cost.
Technical scheme of the present invention is: overhead site-casting method for broad-span presrtressed arch plate, its special character is earlier at the default grooves in two vertical wall top beam 5 outsides of span vertical direction (reservation when pouring into a mould collar tie beam 5), stretch-draw steel plate 6(is inserted stretch-draw steel plate 6 in the grooves in that vertical wall top beam 5 outside anchorings are many through groove again, also can when the cast collar tie beam, imbed bolt, with bolt anchoring stretch-draw steel plate), 5 inner ring places are provided with the horizontal support system at collar tie beam, produce stress when preventing on stretch-draw steel plate 6 tension reinforcing steel bar and make the body of wall displacement, this support system is decided according to its mutual spacing and house size by many horizontal support bar 1(quantity withstanding two opposite collar tie beams, 5 inwalls by 0.2-0.4 rice spacing (border needs to decide factually) in the span direction, available scaffolding steel pipe for building, channel-section steel, the lumps of wood etc.) and perpendicular and spacing be that many (fixed according to the house size) vertical tie-rod 2(of 1.4-2 rice (border needs decide factually) can use scaffolding steel pipe for building, the lumps of wood etc.) form, with steel tube fastener two kinds of bars are linked at infall with common building; Finish pre-tensioning system tension reinforcing steel bar technology with commonsense method in the high-altitude through two opposite stretch-draw steel plates 6 again, and set up template and support thereof, scaffold according to a conventional method; Finish the prestress arch bar roof truss structure in the high-altitude with the ordinary concrete pouring procedure at last.
Special character of the present invention also is also to be lined with gad 4 between each horizontal support bar 1 termination and collar tie beam 5 inside walls, to guarantee each horizontal support bar 1 and jail, collar tie beam 5 top.
Fig. 1 is a invention process state partial schematic diagram;
Fig. 2 looks up partial schematic diagram for horizontal support system of the present invention;
Fig. 3 is collar tie beam of the present invention outside groove schematic cross-section.
Further set forth embodiments of the invention below in conjunction with accompanying drawing: as Fig. 1,2, shown in 3, long 60 meters of cast house, high-altitude, the silo large span arch roof truss that span is 24 meters, earlier when cast wall top beam, at the default groove (shown in Figure 3) in two vertical wall top beam 5 outsides of span vertical direction, in groove, insert again, the stretch-draw steel plate 6 that anchoring 50 block lengths are 1.2 meters, the horizontal support system that is supported by scaffold 3 is set at collar tie beam 5 inner ring places, this support system (as shown in Figure 2) links them with the construction steel tube clamps by withstanding 200 φ, the 48 steel pipe horizontal support bars 1 for building of two opposite collar tie beams, 5 inwalls in the span direction by 0.3 meter spacing and the vertical tie-rod 2 of 12 φ, 48 steel pipes for building that perpendicular and spacing is 2 meters is formed at infall; Between each horizontal support bar 1 termination and collar tie beam 5 inwalls, also be lined with gad 4 and guarantee that each horizontal support bar 1 holds out against body of wall displacement when preventing tension reinforcing steel bar with collar tie beam 5 inwalls; Finish pre-tensioning system tension reinforcing steel bar technology with commonsense method in the high-altitude through two opposite stretch-draw steel plates 6 again, and set up template and support thereof, scaffold according to a conventional method; Finish the prestress arch bar roof truss structure in the high-altitude with the ordinary concrete pouring procedure at last.
The present invention finishes large-span prestressed roof because employing is directly risen empty scene at wall, need not take prefabricated place so have, does not need Large-scale Hoisting, carrying, reduces labor intensity the advantage that reduces cost.
Claims (2)
1, a kind of overhead site-casting method for broad-span presrtressed arch plate is characterized in that:
(1) at the default groove in two vertical wall top beam 5 outsides of span vertical direction, many to stretch-draw steel plate 6 through groove again in vertical wall top beam 5 outside anchorings;
(2) at collar tie beam 5 inner ring places the horizontal support system is set, it links two kinds of bars with fastener with common building by withstanding the many horizontal support bars 1 of two opposite collar tie beams, 5 inwalls in the span direction by 0.2-0.4 rice spacing and many vertical tie-rods 2 that perpendicular and spacing is 1.4-2 rice are formed at infall;
(3) finish pre-tensioning system tension reinforcing steel bar technology with commonsense method through two opposite stretch-draw steel plates 6, and set up template and support thereof, scaffold according to a conventional method;
(4) finish the prestress arch bar roof truss structure in the high-altitude with the ordinary concrete pouring procedure.
2, overhead site-casting method for broad-span presrtressed arch plate according to claim 1 is characterized in that also being lined with gad 4 between each horizontal support bar 1 termination and circular beam 5 inside walls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93108179 CN1044829C (en) | 1993-07-03 | 1993-07-03 | Overhead site-casting method for broad-span presrtressed arch plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93108179 CN1044829C (en) | 1993-07-03 | 1993-07-03 | Overhead site-casting method for broad-span presrtressed arch plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1097229A true CN1097229A (en) | 1995-01-11 |
| CN1044829C CN1044829C (en) | 1999-08-25 |
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ID=4987041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93108179 Expired - Fee Related CN1044829C (en) | 1993-07-03 | 1993-07-03 | Overhead site-casting method for broad-span presrtressed arch plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1044829C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101403212A (en) * | 2008-11-13 | 2009-04-08 | 中铁二局股份有限公司 | Construction method for pretensioned prestressing concrete simply supported T-beam |
| CN101509277B (en) * | 2009-03-20 | 2010-09-01 | 清华大学 | Ripple glaze arch bar, steel bar longeron and concrete combined arch shell structure |
| CN101831978A (en) * | 2010-03-16 | 2010-09-15 | 南通华荣建设集团有限公司 | In-situ cast-in-place construction method for pre-tensioned pre-stressed arch-bar barn roof |
| CN102465598A (en) * | 2010-11-05 | 2012-05-23 | 江苏邗建集团有限公司 | Construction method of high-altitude cast-in-site arch roof truss |
| CN102535864A (en) * | 2012-03-19 | 2012-07-04 | 中冶天工集团有限公司 | Method for reducing additional horizontal force of column top in tensioning process of prestressed steel structure construction |
-
1993
- 1993-07-03 CN CN 93108179 patent/CN1044829C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101403212A (en) * | 2008-11-13 | 2009-04-08 | 中铁二局股份有限公司 | Construction method for pretensioned prestressing concrete simply supported T-beam |
| CN101509277B (en) * | 2009-03-20 | 2010-09-01 | 清华大学 | Ripple glaze arch bar, steel bar longeron and concrete combined arch shell structure |
| CN101831978A (en) * | 2010-03-16 | 2010-09-15 | 南通华荣建设集团有限公司 | In-situ cast-in-place construction method for pre-tensioned pre-stressed arch-bar barn roof |
| CN101831978B (en) * | 2010-03-16 | 2011-07-27 | 南通华荣建设集团有限公司 | In-situ cast-in-place construction method for pre-tensioned pre-stressed arch-bar barn roof |
| CN102465598A (en) * | 2010-11-05 | 2012-05-23 | 江苏邗建集团有限公司 | Construction method of high-altitude cast-in-site arch roof truss |
| CN102535864A (en) * | 2012-03-19 | 2012-07-04 | 中冶天工集团有限公司 | Method for reducing additional horizontal force of column top in tensioning process of prestressed steel structure construction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1044829C (en) | 1999-08-25 |
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