CN100487214C - Large, middle span width roof hollow thermal insulation, heat insulation structure and construction method thereof - Google Patents
Large, middle span width roof hollow thermal insulation, heat insulation structure and construction method thereof Download PDFInfo
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- CN100487214C CN100487214C CNB2007103069901A CN200710306990A CN100487214C CN 100487214 C CN100487214 C CN 100487214C CN B2007103069901 A CNB2007103069901 A CN B2007103069901A CN 200710306990 A CN200710306990 A CN 200710306990A CN 100487214 C CN100487214 C CN 100487214C
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- 238000010276 construction Methods 0.000 title claims abstract description 6
- 238000009413 insulation Methods 0.000 title claims description 41
- 239000004567 concrete Substances 0.000 claims description 17
- 238000004078 waterproofing Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 210000003205 muscle Anatomy 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 3
- 239000003643 water by type Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 13
- 238000004321 preservation Methods 0.000 abstract description 2
- 241000272165 Charadriidae Species 0.000 description 7
- 239000011449 brick Substances 0.000 description 6
- 238000004134 energy conservation Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011083 cement mortar Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/90—Passive houses; Double facade technology
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Abstract
The invention provides a large-span and mid-span hollow roof heat-insulating structure and a construction method thereof, the structure includes an upper structural layer and a lower structural layer; the upper structural layer is an upper chord ribbed plate layer which consists of a first prefabricated slab that is taken as an upper chord rib and a second prefabricated slab that is taken as an upper chord slab; the lower structural layer is a lower chord ribbed layer which consists of a lower chord rib and a lower chord slab. The upper chord ribbed plate layer and the lower chord ribbed plate layer are connected into a cancelled structure by a shear key. The structure provided by the invention not only keeps the construction energy saving effect of the heat preservation in the overhead house surface but also improves the rigidity and carrying capacity of the roof structure; the structure also has double waterproof and anti-seepage lines in the view of waterproof and anti-seepage effect.
Description
Technical field
The present invention relates to a kind of building structure technology, particularly a kind of big or middle span roof hollow thermal insulation, heat insulation structural.
Background technology
Common building energy conservation measure mainly comprises several respects such as masonry wall structure, roof and building doors and windows.Wherein the roof is again indispensable part in the space enclosing structure, and its structure way is for the energy-conservation crucial effects that plays of whole building.
Traditional roof conservation measures is mainly paid close attention to the roof and " is constructed energy-conservation ", but traditional structure way does not give full play of the potentiality of " constructing energy-conservation ".For example, at the Xia Redong cryogenic region, no matter general roof structure way is from insulation or heat insulation angle, and its energy-saving efficiency is not very high, and effect is inexcellent yet.Compare with other floor, the common summer temp in the room of top layer is higher, and winter temperature is lower, and the energy consumption of cooling heating is bigger.
As shown in Figure 1, traditional building roof often adopts the head insulated layer way, and this method is a brick pier on deck, shelves prefabricated platelet on the brick pier, has formed air layer to reach heat insulation effect between prefabricated platelet and deck.Prefabricated platelet and brick buttress are non-structural elements, their effect is to form Stilt layer to reach the purpose of thermal insulation, but their existence makes the function of use of roofing limited, is not useable for accessible roof, and the existence of these a large amount of non-structural elements has simultaneously increased the bearing load of deck; Along with the increase of using the time, prefabricated platelet has phenomenons such as fracture, breaking-up more; The roof is as main space enclosing structure, except the effect of bearing thermal insulation, also play a part even more important waterproof, antiseepage, traditional Stilt layer roofing only is provided with one waterproofing course on deck, this road waterproofing course is along with the increase of using the time, go and overhaul or overhaul, need at first remove prefabricated platelet and brick buttress before maintenance, this has increased the expense and the cycle of maintenance undoubtedly.
The infiltration on roof at present, to leak be that engineers and technicians try hard to a great problem that thorough solution remains unfulfilled again.Particularly in the roofing of big or middle span, should reach thermal insulation, prevent again the roof infiltration, leak, these problems are perplexing technical field of buildings always.
Summary of the invention
The objective of the invention is to provide in order to solve the deficiency that above-mentioned technology exists a kind of stressed rationally, thermal and insulating performance is good, a kind of big or middle span roof hollow thermal insulation, heat insulation structural and the job practices of the effective and waterproof of building energy conservation, antiseepage.
In order to achieve the above object, a kind of big or middle span roof hollow thermal insulation, the heat insulation structural of the present invention's design, it comprises superstructure layer and substructure layer, described superstructure layer is by as wind up first precast plate of rib and the floor layer of forming as second precast plate of upper string board that winds up, the lower edge floor layer that the substructure layer is made up of lower edge rib and following boom plate, wind up floor layer and lower edge floor layer connect into cancelled structure by shear connector.From the structure tension performance analysis, the whole moment of flexure of this cancelled structure is converted into floor, descends the pressure of floor, draws axial force, and structure has bigger rigidity.In order to improve insulation, waterproof effect, at superstructure layer upper surface waterproofing course is set, at the upper surface of substructure layer waterproofing course and insulation layer are set, in the middle of superstructure layer and substructure layer, form head insulated layer.
The job practices of a kind of big or middle span roof hollow thermal insulation provided by the invention, heat insulation structural, its cancelled structure adopts the cast-in-place and prefabricated form of construction work that combines, the following boom plate of lower edge floor layer and lower edge rib and vertical shear connector are in top floor surface bearing template, place reinforcing bar, disposable cast-in-place concrete generates, and the rib that winds up that reserves the advocated muscle and the floor layer that winds up at the top of shear connector connects into integral body; Because the cavity height of cancelled structure is less, wind up the floor layer as using a cast-in-place mode of template, template can't be taken out, therefore, the wind up upper string board of floor layer and the rib that winds up adopts prefabricated superimposed job practices, a pre-buried angle steel ring in the top of shear connector or a circle otic placode are in order to support as the upper string board and the rib prefabricated units that wind up, when treating that the following boom plate of lower edge floor layer and lower edge rib and shear connector reach definite design strength, the precast plate that end face is left shear reinforcement is held on shear connector top pre-buried the angle steel ring or otic placode, adjust the steel bar stress that shear connector reserves, and colligation the wind up upper string board of floor layer and the rib steel muscle that winds up, after again fluid concrete make it and connect into integral body as upper string board and the precast plate of rib of winding up, the concrete that waters after treating reaches to be determined after the design strength, remove the supporting template of lower edge layer, generate whole stressed cancelled structure.
A kind of big or middle span roof hollow thermal insulation provided by the invention, heat insulation structural, replace traditional Stilt layer structure, the heat insulation building energy conservation effect of building heat preservation that had both kept the Stilt layer roofing, the rigidity and the supporting capacity of roof structure have been increased again, the floor layer that winds up of cancelled structure, lower edge floor layer are the ingredient of structure, preserved cavity simultaneously, from roof water-proof, antiseepage, this structural system has dual waterproof, antiseepage multiple defence line.
The roof of building divides system as horizontal load, except with vertical member, as pillar or shear wall etc. connect into whole stressed outside, the effect of mainly bearing vertical load.Normal conditions are under identical vertical load, and the height of deck increases along with the increase of structural span.Adopt the technology of the present invention, deck is made cancelled structure, both kept original built on stilts building function, again the whole moment of flexure of original deck has been changed into the axial force of upper and lower string floor layer floor, improved the utilization rate of material, improve the vertical rigidity and the supporting capacity of roof structure widely, saved original built on stilts prefabricated platelet and brick buttress from total amount of material simultaneously.On the other hand, common waterproofing course can be made in the floor layer upper surface that wind up of cancelled structure, compare with original air-spaced roof, waterproofing course maintenance in the future is greatly simple, the floor layer that winds up of cancelled structure, the upper surface of lower edge floor layer segment all can be provided with the water proof structure layer as required simultaneously, even lower edge floor layer is not provided with the constructional waterproofing layer, because of it is an in-situ layer, density own is better, also can play the function of waterproof, antiseepage.
As everyone knows, increase along with structural span, in order to satisfy the requirement of distortion, the height of structure also correspondingly increases, from the angle of structure stress, the height that increases structure can make structure bear bigger bending moment, and justs think, in, adopt cancelled structure can reduce the consumption of material in the roof structure of large span, improve the load-carrying efficiency of structure.The mechanical property that the technology of the present invention just is being based on cancelled structure combines with the thermal property of building, it integrates the leap function and the incubation and thermal insulation function of building structure, is the purpose of one to reach stressed collection building function and structure function reasonable, that thermal and insulating performance is good.
Description of drawings
Fig. 1 is traditional Stilt layer roof structure schematic diagram;
Fig. 2 is a cancelled structure conduction of heat schematic diagram;
Fig. 3 is a cancelled structure lower edge floor layer plane structural representation;
Fig. 4 is the cancelled structure floor layer plane structural representation that winds up;
Fig. 5 is the cancelled structure cross-sectional view;
Fig. 6 is the first precast plate structural representation;
Fig. 7 is the second precast plate structural representation.
1. decks among the figure, 2. cement mortar screeding layer, 3. waterproofing course, 4. cement mortar screeding layer, 5. prefabricated heat insulation platelet, 6. brick buttress, 1-1. the superstructure plate, 1-2. substructure plate, 7. insulation layer, 8. lower edge rib, 9. descend boom plate, 10. shear connector, 11. first precast plates, 12. second precast plate, 13. shear connector top otic placode, 14. back pouring concretes, 15. head insulated layers, 16. vent window, 17. solar radiant heat, 18. radiant heat, 19. indoor heats, 20. ventilation and heat, 21. quincuncial arrangement shear reinforcements.
The specific embodiment
The invention will be further described in conjunction with the accompanying drawings below by embodiment.
Embodiment:
As shown in Figure 2, a kind of big or middle span roof hollow thermal insulation, heat insulation structural that present embodiment provides, it comprises superstructure layer 1-1 and substructure layer 1-2, as shown in Figure 4, described superstructure layer 1-1 is by as wind up first precast plate 11 of rib and the floor layer of forming as second precast plate 12 of upper string board that winds up, as shown in Figure 3, the lower edge floor layer that substructure layer 1-2 is made up of lower edge rib 8 and following boom plate 9, wind up floor layer and lower edge floor layer connect into cancelled structure by shear connector 10.From the structure tension performance analysis, the whole moment of flexure of this cancelled structure is converted into the rib that winds up, upper string board, lower edge rib, descends the pressure of boom plate, draws axial force, and structure has bigger rigidity.In order to improve insulation, waterproof effect, as shown in Figure 2, can waterproofing course 3 be set at superstructure layer 1-1 upper surface, waterproofing course 3 and insulation layer 7 be set, in the middle of superstructure layer 1-1 and substructure layer 1-2, form head insulated layer 15 at the upper surface of substructure plate 1-2.
A solar radiant heat part is reflected away by superstructure layer 1-1, another part passes superstructure layer 1-1 and enters head insulated layer 15, because the cavity of head insulated layer 15 for being communicated with, the heat of this part is dispelled the heat away by natural ventilation, and the insulation layer 7 of while in the upper surface setting of substructure layer 1-2 further intercepted the propagation of heat radiation to architecture indoor.
A kind of big or middle span roof hollow thermal insulation that present embodiment provides, the job practices of heat insulation structural, its cancelled structure adopts the cast-in-place and prefabricated form of construction work that combines, the following boom plate 9 of lower edge floor layer and lower edge rib 8 and vertical shear connector 10 are in top floor surface bearing template, place reinforcing bar, disposable cast-in-place concrete generates, and the rib 11 that winds up that reserves the advocated muscle and the floor layer that winds up at the top of shear connector 10 connects into integral body; Because the cavity height of cancelled structure is less, wind up the floor layer as using a cast-in-place mode of template, template can't be taken out, therefore, wind up the floor layer upper string board 12 and wind up rib 11 as shown in Figure 6, adopt prefabricated superimposed job practices, a pre-buried angle steel ring in the top of shear connector 10 or a circle otic placode are in order to support as the upper string board 12 and rib 11 prefabricated units that wind up, when treating that the following boom plate 9 of lower edge floor layer and lower edge rib 8 and shear connector 10 reach definite design strength, the precast plate that end face is left shear reinforcement is held on shear connector 10 tops pre-buried the angle steel ring or otic placode, adjust the steel bar stress that shear connector reserves, and colligation the wind up upper string board 12 of floor layer and rib 11 reinforcing bars that wind up, after again fluid concrete 14 make itself and precast plate connect into integral body as the upper string board 12 and the rib 11 that winds up, the concrete 14 that waters after treating reaches to be determined after the design strength, remove the supporting template of lower edge layer, generate whole stressed cancelled structure, as shown in Figure 5.
As shown in Figure 3, lower edge floor layer structure is made up of lower edge rib 8 and following boom plate 9, and lower edge rib 8 can be upwards turning among Fig. 3, also can be to turn over downwards, no matter be upwards or turn over the structural internal force analysis all not to be had big influence, the only eccentric direction of plate shell unit and space beam element change downwards.Lower edge rib 8 retrousse architectural effects are that the indoor roof of top layer is smooth, do not have beam to protrude ceiling, but have increased the waterproof of lower edge floor layer end face, the intractability of insulation layer; Lower edge rib 8 turns over downwards, and then the top layer indoor canopy has the checked spun antung of rule, and the waterproof of lower edge floor layer end face, insulation layer are handled simple simultaneously.The user can select to turn on the lower edge rib 8 or following form of turning over according to concrete requirement.The following boom plate 9 of lower edge floor layer and lower edge rib 8 and shear connector 10 can be with common cast-in-place concrete structure the same concrete casting injection forming of once using.The top that is noted that shear connector 10 will be provided with shear connector otic placode (as shown in Figure 5) or pre-buried angle steel ring in order to supporting wind up first precast plate, second precast plate of floor layer.Main muscle in the shear connector 10 will stretch out when making to become whole with rib 11 drawknots that wind up of first precast plate.
During enforcement, following boom plate 9 and the lower edge rib 8 for the treatment of lower edge floor layer reach after the design strength, shelve first precast plate, second precast plate on the otic placode on shear connector 10 tops, the plate face of first precast plate, second precast plate should dispose shear reinforcement, with the co-operation ability of enhancing with the back pouring concrete.First precast plate, second precast plate such as Fig. 6, shown in Figure 7.Around should stretching out, 11 main muscle of first precast plate become whole with back pouring concrete 14 drawknots.
When will shelve as the precast plate of the floor layer that winds up put in place after, colligation the wind up upper string board 12 of floor layer and the reinforcing bar of the rib 11 that winds up, adjust the main muscle that shear connector 10 stretches out simultaneously, pour into a mould back pouring concrete 14 (as Fig. 5) again, when treating that this back pouring concrete 14 reaches design strength, remove the template of supporting lower edge floor layer, cancelled structure moulding, overall structure co-operation.Lay the waterproofing course 3 of the floor layer upper surface that wind up afterwards.
It should be noted that the waterproofing course 3 of lower edge floor layer upper surface and insulation layer 7 will be constructed and be finished, otherwise can't construct later on before precast plate is shelved.
The internal force of cancelled structure, The deformation calculation can adopt general finite element analysis software to finish, this moment, the plate of upper and lower string floor layer was the plate shell unit, the rib of upper and lower string floor layer is the space beam element, and the shear connector 10 that connects upper and lower string floor layer rib is block unit or spatial beam-column unit.When the height of cavity hour, cancelled structure mainly shows as the loading characteristic of plate, based on two to flexural deformation and two to moment of flexure; When cavity height is higher, then mainly show as the loading characteristic of framework, the distortion based on shear strain, have simultaneously two to flexural deformation.Under vertical uniform load q, the plate of the upper and lower string floor layer of cancelled structure mainly bears pressure, pulling force, also bears local moment of flexure certainly simultaneously; The rib of upper and lower string floor layer then is press-bending, stretch bending component; Shear connector 10 bears two-way shearing and two-way moment of flexure in a small amount.Therefore as long as by reasonably calculating, this structure can be born the effect of various loads such as accessible roof fully.Because this calculating is not main points of the present invention, is not described in detail at this.
Claims (2)
1. one kind big or middle span roof hollow thermal insulation, heat insulation structural, it comprises superstructure layer (1-1) and substructure layer (1-2), it is characterized in that described superstructure layer (1-1) is by as wind up first precast plate (11) of rib and the floor layer of forming as second precast plate (12) of upper string board that winds up, the lower edge floor layer that substructure layer (1-2) is made up of lower edge rib (8) and following boom plate (9), wind up floor layer and lower edge floor layer connect into cancelled structure by shear connector (10); At superstructure layer (1-1) upper surface waterproofing course (3) is set, waterproofing course (3) and insulation layer (7) is set, in the middle of superstructure layer (1-1) and substructure layer (1-2), form head insulated layer (15) at the upper surface of substructure layer (1-2).
2. the job practices of a big or middle span roof hollow thermal insulation as claimed in claim 1, heat insulation structural, its cancelled structure adopts the cast-in-place and prefabricated form of construction work that combines, it is characterized in that the following boom plate (9) of lower edge floor layer and lower edge rib (8) and vertical shear connector (10) are in top floor surface bearing template, place reinforcing bar, disposable cast-in-place concrete generates, and the rib that winds up (11) that reserves the advocated muscle and the floor layer that winds up at the top of shear connector (10) connects into integral body; The wind up upper string board (12) of floor layer and the rib that winds up (11) adopts prefabricated superimposed job practices, the pre-buried angle steel ring in the top of shear connector (10) or one encloses otic placode in order to support as upper string board (12) and the rib that winds up (11) prefabricated units, when treating that the following boom plate (9) of lower edge floor layer and lower edge rib (8) and shear connector (10) reach definite design strength, the precast plate that end face is left shear reinforcement is held on shear connector (10) top pre-buried the angle steel ring or otic placode, adjust the steel bar stress that shear connector reserves, and colligation the wind up upper string board (12) of floor layer and the rib that winds up (11) reinforcing bar, after again fluid concrete (14) make it and connect into integral body as the precast plate of upper string board (12) and the rib that winds up (11), the concrete that waters after treating (14) reaches to be determined after the design strength, remove the supporting template of lower edge layer, generate whole stressed cancelled structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007103069901A CN100487214C (en) | 2007-10-12 | 2007-12-29 | Large, middle span width roof hollow thermal insulation, heat insulation structure and construction method thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200720184121.1 | 2007-10-12 | ||
| CN200720184121 | 2007-10-12 | ||
| CNB2007103069901A CN100487214C (en) | 2007-10-12 | 2007-12-29 | Large, middle span width roof hollow thermal insulation, heat insulation structure and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101220657A CN101220657A (en) | 2008-07-16 |
| CN100487214C true CN100487214C (en) | 2009-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007103069901A Expired - Fee Related CN100487214C (en) | 2007-10-12 | 2007-12-29 | Large, middle span width roof hollow thermal insulation, heat insulation structure and construction method thereof |
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| CN (1) | CN100487214C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015715B (en) * | 2012-11-19 | 2015-02-18 | 中国核工业华兴建设有限公司 | Construction method of double roof boards of nuclear power station casing |
| CN107366427B (en) * | 2017-06-09 | 2019-07-09 | 中铁十六局集团第四工程有限公司 | A kind of city cast-in-situ hollow Sandwich Plates concrete construction method |
| CN109322450B (en) * | 2018-11-29 | 2024-03-12 | 河北工业大学 | Composite phase-change ventilation roof using underground water as cold source |
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