CN1046659C - Aerial prefabricating and constructing tech. for prestressed concrete arch-bar roof truss - Google Patents
Aerial prefabricating and constructing tech. for prestressed concrete arch-bar roof truss Download PDFInfo
- Publication number
- CN1046659C CN1046659C CN 96117701 CN96117701A CN1046659C CN 1046659 C CN1046659 C CN 1046659C CN 96117701 CN96117701 CN 96117701 CN 96117701 A CN96117701 A CN 96117701A CN 1046659 C CN1046659 C CN 1046659C
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- roof truss
- top beam
- prefabricating
- prefabricated
- arch
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Abstract
The present invention provides an air prefabricating construction technology of a prestressing force concrete arched plate roof truss, which comprises the steps that firstly, hoisting jack grooves are arranged outside top ring beams of two vertical walls in advance, tensioning anchor piles for tensioning anchor plates are embedded in gutters outside the top ring beams, and then, a horizontal support, a vertical support and a template are overlapped in the top ring beams of the two vertical walls so as to form a prefabricating operating platform; the arched plate roof truss is prefabricated on a platform according to a spacing and filling construction sequence; the prefabricated arched plate roof truss is moved to a mounting position horizontally. Full scaffolds do not need to be arranged, a prefabricating field is not needed, and a hoisting machine does not need to be used. The present invention has the advantages of simple and safe construction, reliable quality and low cost.
Description
The present invention relates to a kind of the realm of building construction, particularly relate to the aerial prefabricating and constructing of a kind of prestressed concrete arch-bar roof truss.
The job practices of present large-span prestressed concrete arch-bar roof truss often adopts, and the prefabricated arch roof truss on ground lifts required installation site with large-scale hoisting machinery again and installs earlier; Or stay with repeatedly setting up full hall scaffold, aloft cast-in-situ construction method.The former floor space is big, and the transportation of member horizontal vertical needs with the large-scale hoisting machinery lifting, and difficulty of construction is big.The artificial consumption of the latter is many, the cost height.Chinese patent CN1097229 discloses a kind of overhead site-casting method for broad-span presrtressed arch plate, be through groove anchoring stretch-draw steel plate in the wall top beam outside, in the setting of collar tie beam inner ring by several horizontal supports that withstand two opposite collar tie beam inwalls in the span direction and horizontal support system that vertical support is formed, tension reinforcing steel bar on the stretch-draw steel plate then, existing field boundary waters into prestressed large-span arch bar roof in the high-altitude after setting up template, support, scaffold by commonsense method again.This method need not take the lifting of prefabricated field boundary ground and large-scale hoisting machinery, transportation, but still need set up full hall scaffold, is a kind of cast-in-place construction mode, and artificial consumption is many, the cost height.
The object of the present invention is to provide a kind of ground of neither using prefabricated, it is cast-in-place also need not set up full hall scaffold, and it is simple and safe to construct, and objectivized labour and activation labour expenditure are few, the aerial prefabricating and constructing of prestressed concrete arch-bar roof truss that cost is low.
The aerial prefabricating and constructing of prestressed concrete arch-bar roof truss of the present invention is, 1) at the default jack groove in the two vertical wall top beam outsides, and bury the stretch-draw anchoring pile parallel underground in the top beam outside with vertical wall, as the stretch-draw anchor slab lower fulcrum, the stretch-draw anchor slab is installed on the stretch-draw anchoring pile, and its quantity is looked the production quantity piece of every batch of arch roof truss and is decided.Set up cross binding and longitudinal bracing in two vertical wall top beam inboards then, and make cross binding hold out against top beam, top beam produces displacement when preventing reinforcing bar, cause wall crazing, for easy to operate, employing is provided with slack adjuster between cross binding, regulate this device and make it to hold out against top beam, and longitudinal and transverse support specification, spacing are determined by calculating.On cross binding, lay template again, constitute prefabricated operating platform; 2) stay with conventional jumping lattice and fill out a grade sequence of construction, open muscle, formwork erection, pour and maintenance, make arch roof truss by Pin; 3) jack is put in the jack groove in the top beam outside, pursue the arch roof truss that the Pin jacking is made, and be moved horizontally to the installation site, be conveniently moving, on two vertical top beams, be provided with special cart, the two ends of arch roof truss directly are placed on two dollies by the top, instruments such as available bottle gouard moved by hands, with the arch roof truss horizontally tracting to the installation site.Because the length of prefabricated operating platform is certain, the arch roof truss limited amount that is prefabricated into need be prefabricated in batches, so so far finish one-period.Repetitive operation is opened muscle, formwork erection, is poured and maintenance by Pin, is prefabricated into arch bar plank house frame, moves horizontally arch roof truss again to operations such as installation sites, finishes until whole arch roof truss production.
The advantage of the aerial prefabricating and constructing of concrete arch-bar roof truss of the present invention is prefabricated in batches aloft, it is cast-in-place aloft not need repeatedly to set up full hall scaffold, not prefabricated on ground yet, save field boundary ground, and do not need the large-scale hoisting machinery lifting, aerial prefabricated platform once is barricaded as, be repeatedly used, starting equipment is simple, construction safety, it is few to consume material and recruitment, and cost is low.If any two above house arch roof truss flowing water constructions, economic and technical norms are more remarkable.
Describe the embodiment of the invention in detail below in conjunction with accompanying drawing.
Fig. 1: the invention process state partial schematic diagram
Fig. 2; The invention process state plane schematic flow sheet
Embodiment 1:
Long 85 meters of certain silo, wide 18 meters, wall is high 7 meters, and roof system is made of the wide 1.2 meters prestressed concrete arch-bar roof trusses of 72 Pin.Be provided with settlement joint 9 at the silo middle part, two partly about its both sides were divided into silo by two adjacent cross walls 10.During construction, promptly at two cross walls, 10 places, reserve jack groove 8 in top beam 3 outsides, and bury stretch-draw anchoring pile 1 underground, opening installation stretch-draw anchor slab 2 on the anchoring pile 1, set up cross binding 5 and the longitudinal bracing 6 that has slack adjuster 7 then in top beam 3 inboards, regulating slack adjuster 7 makes cross binding 5 hold out against top beam 3, be lined with parallels 12 therebetween, on cross binding 5, lay template 4, the disposable aerial prefabricated platform of growing into 16 meters of taking again; On platform, adopt the jumping lattice to fill out a grade sequence of construction, open muscle, formwork erection, pour and maintenance, be prefabricated into first totally 12 Pin arch roof trusses 11 by design by Pin; Jack is put into the jack groove 8 in the top beam outside, on the dolly of the arch roof truss 11 that is prefabricated into by the Pin jacking to the top beam 3 (two ends that are about to arch roof truss 11 are placed on respectively on two dollies on the two vertical collar tie beams 3), draw with bottle gouard moved by hands, make dolly on top beam 3, move to the installation site, put in place until 12 Pin arch roof trusses 11.Repeat prefabricated and move horizontally the operation of arch roof truss 11, be divided into 6 batches and carry out, promptly 6 cycles are finished this silo arch roof truss construction.
Claims (2)
1, the aerial prefabricating and constructing of a kind of prestressed concrete arch-bar roof truss is characterized in that:
1) at first reserves the jack groove in the two vertical wall top beam outsides, and in the gutter of the top beam outside, bury the stretch-draw anchoring pile underground, the stretch-draw anchor slab is installed on the stretch-draw anchoring pile, set up cross binding and longitudinal bracing in two vertical wall top beam inboards then, and make cross binding hold out against top beam, on horizontal support, lay template then, constitute prefabricated operating platform;
2) adopt the pre-tensioning system production technology, by jump lattice fill out grade sequence of construction on prefabricated operating platform by Pin open muscle, formwork erection, pour, maintenance, make arch roof truss;
3) jack is put into the jack groove in the top beam outside, the arch roof truss that is prefabricated into by the Pin jacking, and be held in place on the dolly on the top beam, move horizontally arch roof truss again to the installation site.
2, the aerial prefabricating and constructing of prestressed concrete arch-bar roof truss as claimed in claim 1, when it is characterized in that setting up prefabricated operating platform, the mode that cross binding holds out against top beam is with slack adjuster is set in cross binding, and utilize the slack adjuster that is provided with between cross binding to regulate, make cross binding hold out against top beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96117701 CN1046659C (en) | 1996-09-09 | 1996-09-09 | Aerial prefabricating and constructing tech. for prestressed concrete arch-bar roof truss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96117701 CN1046659C (en) | 1996-09-09 | 1996-09-09 | Aerial prefabricating and constructing tech. for prestressed concrete arch-bar roof truss |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1154897A CN1154897A (en) | 1997-07-23 |
| CN1046659C true CN1046659C (en) | 1999-11-24 |
Family
ID=5124529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96117701 Expired - Fee Related CN1046659C (en) | 1996-09-09 | 1996-09-09 | Aerial prefabricating and constructing tech. for prestressed concrete arch-bar roof truss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1046659C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101403212B (en) * | 2008-11-13 | 2011-01-26 | 中铁二局股份有限公司 | Construction method for pretensioned prestressing concrete simply supported T-beam |
| 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 |
| CN102251667B (en) * | 2011-05-11 | 2013-04-17 | 中冶建工集团有限公司 | Construction method for reinforced concrete arched roof of grain store |
-
1996
- 1996-09-09 CN CN 96117701 patent/CN1046659C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1154897A (en) | 1997-07-23 |
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Free format text: CORRECT: INVENTOR; FROM: CHEN XUELUN TO: CHEN YONGLUN |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |