CN1042209A - Production of truss type roof boarding by means of lamination - Google Patents
Production of truss type roof boarding by means of lamination Download PDFInfo
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- CN1042209A CN1042209A CN 89108528 CN89108528A CN1042209A CN 1042209 A CN1042209 A CN 1042209A CN 89108528 CN89108528 CN 89108528 CN 89108528 A CN89108528 A CN 89108528A CN 1042209 A CN1042209 A CN 1042209A
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- truss
- lower edge
- web member
- plate
- lamination
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 36
- 238000003475 lamination Methods 0.000 title claims abstract description 33
- 239000004567 concrete Substances 0.000 claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 5
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 239000002023 wood Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 13
- 239000004570 mortar (masonry) Substances 0.000 description 5
- 239000002344 surface layer Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000002219 extraembryonic membrane Anatomy 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- -1 timber Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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Abstract
A kind of production of truss type roof boarding by means of lamination is made up of wind up armored concrete slab face and two side lower edges, it is characterized in that adding between upper string board face and the lower edge prefabricated web member, constitutes two precast assembly truss.The assembly unit truss can be the vertical plane truss, clinoplain truss or inclination warp surface truss.Can produce the plate face by first lamination, lower edge successively is installed, after the post-tensioned prestressing, prefabricated web member is installed, web member and lower edge adopt friction fixed.The block-by-block hoisted in position, welded connection plate between plate forms integral roof.Its easy construction, handsome in appearance.Plate face good at plane stability, no secondary stress produces, and is applicable to various public buildings or industrial premises.
Description
The invention belongs to the roofing element of construction work.
Existing ' grillage unification ' roofing large board member of can lamination producing is as the on-the-spot lamination production of Chinese patent CN85102720 ' prestressed reinforced concrete arched roof plate ' and CN88204818.2 ' aeration type roofing large board member '.Mainly contain two types.A kind ofly be, the arched roof plate of lamination production band pull bar, the dead load mechanical property of this structure is fine, produces also very convenient.But in when design and since the concrete plate surface of will considering to wind up at plane stability, its cross section rib height is bigger, and will constantly change with the difference of member span, and the production template can't be finalized the design.In addition, the ability of anti-dynamic load of this structure and unsymmetrical load is relatively poor, therefore can not need to improve there being dynamic load to use with having on the building that suspends load in midair.Another kind is, lamination is produced prestressing force single grooved arch bar, and the rigidity of this structure is very big, and the mechanical property of anti-dead load and dynamic load is all fine.But because two coxostermums are very high, be again solid reinforced concrete thin-walled structure, when therefore producing, the shape of template of both sides, complex structure, size is huge, and cost is very high.And concrete pouring difficulty is very big, occurs quality accident easily.Simultaneously, because two coxostermums are concrete integral body, material usage is many, and dead load is big, also needs to improve.
Purpose of the present invention, be to propose a kind of new ' grillage unification ' big plate of roofing of can lamination producing, the subject matter that makes it avoid aforementioned existing structure to exist, accomplish: (1) makes the rib height of top chord section, only determine by the requirement of function of use, the span with structure does not change, and is convenient to the typing of production template.(2) guarantee that structure has the enough anti-dynamic loads and the ability of unsymmetrical load, accomplishes to guarantee the rigidity of structure, the deadweight that alleviates structure again.(3) simplify the production template, the convenient construction operation.
Content of the present invention, it is the truss type roof boarding by means of can lamination producing, this production of truss type roof boarding by means of lamination is made up of the lower edge of wind up armored concrete slab face and two sides, it is characterized in that adding prefabricated web member between armored concrete slab face and the lower edge winding up, constitute two precast assembly truss.
Its lamination production process is:
(1) the cast-in-place armored concrete slab face that winds up is overlapping production successively.The pattern of plate face can be that flute profile directly has insulation layer, or make the double-layer ventilation type, or makes the ventilating and thermal insulating type.
(2) lower edge successively is installed in plate face both sides.The lower edge of two precast assembly truss can be a post-tensioned prestressing, and is also can right and wrong prestressed.The lower edge material of these truss can be a reinforcing bar, also can be shaped steel.When lower edge adopted post-tensioned prestressing, the prestressed reinforcement of every side can be single, also can be double joint, or steel strand.
(3) prefabricated web member is installed.At lower edge end is installed successively, or stretch-draw is over after the prestressing force, prefabricated web member is installed again, each large board member that has overlaped upper and lower string is separately unified, form truss separately.
In order to guarantee after the overlapping production of upper string board face of each layer large board member is finished, two side truss that make the back assemble the every layer of large board member that gets on also can successively overlap, then the structure of truss must satisfy following condition: when (1) is vertical plane frame when truss, then the truss web of each layer large board member must be nested in together mutually in vertical direction, V-type as shown in Figure 1.At this moment, the lower edge of each truss and web member can not be in same perpendiculars, but lower edge is in the outside of web member, as shown in Figure 2.(2) when truss is inclination, for each layer stacked can successively pile up between the truss of large board member, and make the lower edge of each truss and the web member can be in same clinoplain, then the thickness of web member (δ) must satisfy the condition of δ≤Sin ∮ h.(∮ is the inclination angle of truss and vertical plane; The vertical height of h every layer of large board member when to be that the upper string board face is overlapping produce), as shown in Figure 3.
There are following three kinds by the formed truss shape of mentioned above principle:
(1) on the production of truss type roof boarding by means of lamination member of monolithic, two truss of both sides are vertical plane frames, and the pattern of its web member must be a V-type, and lower edge one fixes on the outside of web member, shown in Fig. 4,5,6.After big plate was installed, formed final truss was vertical two limb plane frames between two big plate plate seams, as shown in Figure 7.
(2) on the production of truss type roof boarding by means of lamination member of monolithic, two truss of both sides are plane inclined truss, and the angle α of truss and horizontal plane is definite value at any section of truss.At this moment, the width of upper string board face will be widened with the reduction of truss depth of section, shown in Fig. 8,9,10.Therefore, the upper string board face is at vertical degree of broadening, and is the narrowest at spaning middle section highest point plate face, and the wideest near bearing cross section lowest part plate face.After big plate is installed, two truss top welded connection plates between the two boards seam, formed final truss is leg-of-mutton space truss, the width that winds up (H) of this triangle space truss will narrow down with the reduction of truss depth of section, gradually by H
1Change to H
2, shown in Figure 11,12.But the angle β between the web member fixes.
(3) on the production of truss type roof boarding by means of lamination member of monolithic, two truss of both sides are the warp surface truss that tilt, the angle α of truss and horizontal plane, reduce gradually with the reduction of truss depth of section, the web member of truss is not in same plane, distortion occurs, this is in order to guarantee that the upper string board face equates and the truss pattern that occurs at width longitudinally, shown in Figure 13,14,15.After big plate is installed, two truss top welded connection plates between the two boards seam, formed final truss also is leg-of-mutton space truss, but the width H that winds up of this triangle space truss is a definite value, the reduction with the truss depth of section does not change, but the angle β between two web members will strengthen with the reduction of truss depth of section, by β
1Be increased to β
2, shown in Figure 16,17.
The material of web member can be steel, steel concrete, timber, plastics, all adopts prefabricated assembling, can cancel the template of cast-in-place solid whole web like this, simplify the pattern of production template in a large number, the convenient construction operation, save mould material, reduce cost.
(4) fixed web member of friction and lower edge.When lower edge is post-tensioned prestressing, can not on lower edge, directly weld the joint cover of web member by traditional way, therefore the fixed of joint cover and lower edge must be adopted special way, simultaneously because the truss type roof boarding by means member is lamination production, truss web is the back assembling, together overlapped again, therefore must consider possibility, the reliability and convenient and simple that node is installed.So the friction concretion method that adopts, shown in Figure 18,19,20.Be welded with joint cover in the web member lower end,,, make joint cover produce the pressure that compresses to lower edge, joint cover and pull bar tightly are consolidated again because of the downward displacement of screw with tightening up ' cuff semi-circular plate ' when clamping the lower edge pull bar.In order to increase the frictional resistance between joint cover and lower edge pull bar, the contact surface of joint cover and lower edge can make dentation in advance.When lower edge was two reinforcing bars, the consolidation method of joint cover and lower edge pull bar was shown in Figure 21,22,23, and operating principle is basic identical.
(5) block-by-block lifting production of truss type roof boarding by means of lamination, the welded connection plate.For clinoplain truss or inclination warp surface truss, two truss tops between two big plate plate seams of roofing, welded connection plate.Form integral roof.
Production of truss type roof boarding by means of lamination of the present invention is than the arched roof plate of band pull bar, improved the armored concrete slab face that winds up at plane stability, than prestressing force single grooved arch bar, avoided the difficulty of both sides solid concrete web pouring construction.
The effect of web member is to be used for shortening the calculated length of rib of slab of winding up, increase the stability of upper string board face on the plane, the height of the rib of slab that winds up is only determined by the desired size of function of use, reach the member that makes any span, the rib height of its top chord section all is a fixing constant, is convenient to the typing of production template.In addition, replace cast-in-place solid whole steel concrete web, can when guaranteeing the large board member integral rigidity, save raw material in a large number, alleviate dead load with prefabricated web member.
Because the support of web member, the upper string board face can be an arc, also can be broken line shape or leg-of-mutton, lower edge can be a straight line, also can be by the broken line shape of web member backfin.
Adopt pretensioning lower edge prestressing force, the formed prestressing force production of truss type roof boarding by means of lamination of the way structure of web member is installed in the back, and under regular service conditions, web member is no secondary stress basically, therefore, as safe as a house reliably.
When adopting both sides clinoplain truss, form the place of winding up of triangle space truss each other, roofing daylighting window can be set, enriched type of construction at the big plate of roofing.
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the production of truss type roof boarding by means of lamination front view.Winding up among the figure above the armored concrete slab face 1 is insulation layer 4, lower edge 2 and wind up and be provided with V-type web member 3 between the armored concrete slab face.
Fig. 2 is when truss is the vertical plane truss, and lower edge 2 must be at the outside of web member 3 schematic diagram.
Fig. 3 is when truss is the inclination truss, lower edge and web member in same clinoplain, the inclination angle of the thickness of web member 3≤upper string board face thickness h * truss and vertical plane.
Fig. 4,5, the 6th, two overall schematic that truss is the vertical plane truss of production of truss type roof boarding by means of lamination.
Two limb plane frames that Fig. 7 forms when being the production of truss type roof boarding by means of lamination seam of vertical plane truss.
Fig. 8,9, the 10th, two overall schematic that truss is the plane inclined truss of production of truss type roof boarding by means of lamination.
Figure 11, the 12nd, the end face that forms the wide variety of winding up during the production of truss type roof boarding by means of lamination seam of clinoplain truss is the triangle space truss of fusiformis.
Figure 13,14, the 15th, two overall schematic that truss is an inclination warp surface truss of production of truss type roof boarding by means of lamination.
Figure 16, the 17th, the triangle space truss of the wide end face that winds up that forms during the production of truss type roof boarding by means of lamination seam that tilts to twist truss.
Figure 18,19, the 20th, the friction consolidated node organigram of web member and lower edge.Figure 19 is the A-A sectional drawing of Figure 18, and web member 3 lower ends are welded with joint cover 5 among the figure, are with cuff semi-circular plate 6 on the lower edge 2, with bolt 7 that joint cover 5 is fastening with cuff semi-circular plate 6, joint cover 5 lower end surface are carved with groove, when compressing with lower edge 2, rely on friction fixed.
When Figure 21,22, the 23rd, lower edge were two limb, Figure 22 was the B-B sectional drawing of Figure 21.Cuff plate 8 can be welded in the web member lower end, and after two lower edges were entangled, therebetween one joint cover 9 when bolton, just was consolidated two limb lower edges, becomes whole.
Figure 24 is the grooved band insulation laminate face pattern of production of truss type roof boarding by means of lamination.
Figure 25 is the double-layer ventilation template face pattern of production of truss type roof boarding by means of lamination.
Figure 26 is the plate face pattern of the ventilating and thermal insulating type of production of truss type roof boarding by means of lamination.
Its concrete construction technology can be:
(1) overall dimensions and the shape of pressing truss type roof boarding by means upper string board face made fetal membrane, (getting final product with the brick laid dry).
(2) make the cope and drag pattern plate by two side views of the concrete plate surface that winds up.
(3) two side forms are installed in the loose tool both sides, are smash forming moulding bed surface layer with the mortar shake.
(4) after loose tool mortar surface layer reaches intensity, promote two side forms, hoisting depth is h, brushes separation layer then on the loose tool surface layer.
(5) assembling reinforcement, pouring upper string board surface concrete, lay insulation layer on the plate face immediately then, and on insulation layer, smear mortar 2cm.
(6) health of plate surface concrete was taken two side forms apart after 24 hours, and promoted the h height once more, brushed separation layer on the mortar shell on the insulation aspect.
(7) repeat the operation of (5), the concrete plate surface that winds up of lamination production so successively is up to the number of plies that reaches expectation.
(8) concrete plate surface that winds up is concentrated health.
(9) after the concrete of upper string board face reaches design strength, all put on the lower edge prestressed reinforcement, then member is successively carried out prestressed stretch-draw.
(10) got well on the large board member of lower edge prestressed reinforcement in stretch-draw, prefabricated truss web successively has been installed, made every large board member all form a complete truss type roof boarding by means.
(11) block-by-block lifts.
(12) top of two truss between mounted two large board members by designing requirement welded connection plate, forms leg-of-mutton space truss.
(13) on the top of triangle space truss, the heat insulating material of lay joint filling, and floating with mortar, make whole roofing form a plane surface layer.
(14) on the roofing surface layer, make waterproofing course.
Claims (8)
1, a kind of production of truss type roof boarding by means of lamination, lower edge by wind up armored concrete slab face and two sides is formed, it is characterized in that adding prefabricated web member between upper string board face and lower edge, constitute two precast assembly truss, prefabricated web member and lower edge friction are consolidated into integral body.
2, the big plate of roofing as claimed in claim 1, the armored concrete slab face that it is characterized in that winding up can be grooved band insulation layer patterns, or make the double-layer ventilation pattern, or make the ventilating and thermal insulating pattern.
3, the big plate of roofing as claimed in claim 1 is characterized in that lower edge can be a post-tensioned prestressing, or non-prestressed, and when lower edge adopted post-tensioned prestressing, every side prestressed reinforcement can be single, double joint, steel strand.
4, the big plate of roofing as claimed in claim 1 is characterized in that prefabricated web member can use the steel member, reinforced concrete member, wood members or plastic member.
5, the big plate of roofing as claimed in claim 1 is characterized in that web member and the lower edge fixed structure that rubs is, is welded with joint cover in the web member lower end, is provided with the cuff semi-circular plate in the lower edge periphery, with bolt joint cover is connected one with the cuff semi-circular plate.
6, the big plate of roofing as claimed in claim 1 is characterized in that the plane frame that web member and lower edge form can be vertical plane truss, clinoplain truss or inclination warp surface truss.
7, the big plate of roofing as claimed in claim 1 is characterized in that when clinoplain truss or inclination warp surface truss, and between two big plate plate seams of roofing, two truss top welded connection plates are formed the triangle space truss.
8, a kind of production of truss type roof boarding by means of lamination, its production method is:
The cast-in-place lamination production armored concrete slab face that winds up;
Lower edge successively is installed in plate face both sides;
If when lower edge adopts post-tensioned prestressing, carry out prestressed stretch-draw;
At the prefabricated web member of installation between armored concrete slab face and the lower edge that winds up;
Fixed web member and lower edge rub;
With the big plate block-by-block of roofing hoisted in position, welded connection plate between plate forms integral roof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89108528 CN1016979B (en) | 1989-11-16 | 1989-11-16 | Method for producing truss type roof large plate in laminated mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89108528 CN1016979B (en) | 1989-11-16 | 1989-11-16 | Method for producing truss type roof large plate in laminated mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1042209A true CN1042209A (en) | 1990-05-16 |
| CN1016979B CN1016979B (en) | 1992-06-10 |
Family
ID=4857609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89108528 Expired CN1016979B (en) | 1989-11-16 | 1989-11-16 | Method for producing truss type roof large plate in laminated mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1016979B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108000680A (en) * | 2017-11-21 | 2018-05-08 | 重庆大业新型建材集团有限公司 | The laminated type preparation method of cored slab |
| CN108775111A (en) * | 2018-06-07 | 2018-11-09 | 山西联邦环境工程有限公司 | A kind of assembled large span triangular steel truss structure |
| CN118756886A (en) * | 2024-09-06 | 2024-10-11 | 山西四建集团有限公司 | A lean construction method for large-span prestressed concrete roof structure |
-
1989
- 1989-11-16 CN CN 89108528 patent/CN1016979B/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108000680A (en) * | 2017-11-21 | 2018-05-08 | 重庆大业新型建材集团有限公司 | The laminated type preparation method of cored slab |
| CN108775111A (en) * | 2018-06-07 | 2018-11-09 | 山西联邦环境工程有限公司 | A kind of assembled large span triangular steel truss structure |
| CN118756886A (en) * | 2024-09-06 | 2024-10-11 | 山西四建集团有限公司 | A lean construction method for large-span prestressed concrete roof structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1016979B (en) | 1992-06-10 |
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