CN108589934A - A kind of waterproof and dampproof sound insulation type calcium silicate board - Google Patents

A kind of waterproof and dampproof sound insulation type calcium silicate board Download PDF

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Publication number
CN108589934A
CN108589934A CN201810688205.1A CN201810688205A CN108589934A CN 108589934 A CN108589934 A CN 108589934A CN 201810688205 A CN201810688205 A CN 201810688205A CN 108589934 A CN108589934 A CN 108589934A
Authority
CN
China
Prior art keywords
calcium silicate
silicate board
fixedly connected
constant temperature
waterproof
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201810688205.1A
Other languages
Chinese (zh)
Inventor
鲁伟
马强
吴雪
李叶
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Kangmei New Material Technology Co Ltd
Original Assignee
Jiangsu Kangmei New Material Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Kangmei New Material Technology Co Ltd filed Critical Jiangsu Kangmei New Material Technology Co Ltd
Priority to CN201810688205.1A priority Critical patent/CN108589934A/en
Publication of CN108589934A publication Critical patent/CN108589934A/en
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/70Drying or keeping dry, e.g. by air vents
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84Sound-absorbing elements
    • E04B1/86Sound-absorbing elements slab-shaped
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/10Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102Insulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/726Permeability to liquids, absorption
    • B32B2307/7265Non-permeable

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Architecture (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Building Environments (AREA)

Abstract

The invention discloses a kind of waterproof and dampproof sound insulation type calcium silicate boards, it is related to calcium silicate board technical field, including calcium silicate board, thermostat layer is fixedly connected on the outside of calcium silicate board, the inside of thermostat layer offers constant temperature chamber, the inside of constant temperature chamber is fixedly connected with circulation constant temperature pipe, one end of limitation bar is fixedly connected at the top of circulation constant temperature pipe, the other end of limitation bar is fixedly connected with the inner roof wall of constant temperature chamber, the both sides inner wall of constant temperature chamber offers multiple thermostats, and the inside of thermostat is fixedly connected with constant temperature net.The waterproof and dampproof sound insulation type calcium silicate board, ensure the stabilization of temperature by thermostat layer, prevent calcium silicate board from being influenced by humidity, pass through the absorbable moisture into inside calcium silicate board of drying layer, ensure the drying inside calcium silicate board, the propagation that noise can be reduced by noise reducing layer absorbs extraneous noise by acoustic hole, and the noise absorbed is reduced by the bloop circulating transfer of sound-absorbing media interior.

Description

A kind of waterproof and dampproof sound insulation type calcium silicate board
Technical field
The present invention relates to calcium silicate board technical field, specially a kind of waterproof and dampproof sound insulation type calcium silicate board.
Background technology
For calcium silicate board as novel environment friendly building materials, it is and to be equipped with natural fibre using the cement of high-quality high standard as basis material Dimension enhancing, panel made of being handled through special techniques such as production technology molding, pressurizations, but the moisture-proof sound insulation effect of existing calcium silicate board Fruit is less good.
A kind of calcium silicate board disclosed in Chinese invention patent application prospectus CN206942024U, a kind of silicon Sour calcium plate, simple in structure, easy to use, easy to operate, at low cost, installation and convenient disassembly install firm, overall construction intensity Height, applied widely, service life is long, has the function of safe and reliable, but the moisture-proof soundproof effect of the calcium silicate board is less good It is good.
Invention content
(One)The technical issues of solution
In view of the deficiencies of the prior art, the present invention provides a kind of waterproof and dampproof sound insulation type calcium silicate board, existing silicon is solved The not very good problem of the sour moisture-proof soundproof effect of calcium plate.
(Two)Technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs:A kind of waterproof and dampproof sound insulation type calcium silicate board, Including calcium silicate board, thermostat layer is fixedly connected on the outside of the calcium silicate board, the inside of the thermostat layer offers constant temperature chamber, The inside of the constant temperature chamber is fixedly connected with circulation constant temperature pipe, and the one of limitation bar is fixedly connected at the top of the circulation constant temperature pipe The other end at end, the limitation bar is fixedly connected with the inner roof wall of constant temperature chamber, and the both sides inner wall of the constant temperature chamber offers more The inside of a thermostat, the thermostat is fixedly connected with constant temperature net, and drying layer, institute are fixedly connected on the outside of the thermostat layer The inside for stating drying layer is fixedly connected with multiple placement plates, and the both ends of the placement plate are fixed with the both sides inner wall of drying layer respectively Connection;
It is opened up between two placement plates and dry slot, the inside of the dry slot is fixedly connected with dry packet, described dry Be fixedly connected with noise reducing layer on the outside of dry layer, the both sides of the noise reducing layer offer multiple acoustic holes, the noise reducing layer it is interior Portion is fixedly connected with sound-absorbing medium, and the inside of the sound-absorbing medium offers multiple bloops, and the inside of the sound-absorbing medium is solid Surely it is connected with silencing cotton.
Optionally, the number of thermostat described in both sides is four, and four thermostats are vertically arranged, permanent described in both sides Warm slot corresponds.
Optionally, the number of the placement plate is six, and six placement plates are vertically arranged.
Optionally, the number of the acoustic hole and bloop is no less than six, and multiple acoustic holes and bloop are equal It is vertically arranged.
Optionally, the inside of the calcium silicate board offers vacuum chamber, and the outer surface of the calcium silicate board is fixedly connected with Waterproof membrane.
Optionally, the both ends of the calcium silicate board offer Silencing groove, and the inner wall of the Silencing groove, which is fixedly connected with, to be subtracted Shake block.
(Three)Advantageous effect
The present invention provides a kind of waterproof and dampproof sound insulation type calcium silicate boards, have following advantageous effect:
(1), the waterproof and dampproof sound insulation type calcium silicate board, on the one hand, by thermostat layer ensure temperature stabilization, prevent calcium silicate board It is influenced by humidity, can ensure that temperature is recycled in the inside of constant temperature chamber by circulation constant temperature pipe, reduce unnecessary waste, Heat is absorbed or distributed by constant temperature net, ensures the stabilization of temperature, passes through the absorbable water into inside calcium silicate board of drying layer Point, ensure the drying inside calcium silicate board, moisture can be absorbed by dry packet, prevent moisture from being impacted to calcium silicate board.
(2), the waterproof and dampproof sound insulation type calcium silicate board, on the other hand, the propagation of noise can be reduced by noise reducing layer, lead to It crosses acoustic hole and absorbs extraneous noise, the noise transmission of absorption to the inside of sound-absorbing medium, pass through disappearing for sound-absorbing media interior Sound hole circulating transfer reduces the noise absorbed, to achieve the effect that sound insulation, can have the transmission for reducing noise by silencing cotton, effectively The volume for reducing noise, ensure that the soundproof effect of noise reducing layer.
Description of the drawings
Fig. 1 is calcium silicate board main structure diagram of the present invention;
Fig. 2 is thermostat layer internal structure schematic diagram of the present invention;
Fig. 3 is drying layer internal structure schematic diagram of the present invention;
Fig. 4 is noise reducing layer internal structure schematic diagram of the present invention;
Fig. 5 is calcium silicate board internal structure schematic diagram of the present invention.
In figure:Calcium silicate board 1, constant temperature chamber 3, circulation constant temperature pipe 4, limitation bar 5, thermostat 6, constant temperature net 7, is done thermostat layer 2 Dry layer 8, placement plate 9, dry slot 10, dry packet 11, noise reducing layer 12, acoustic hole 13, sound-absorbing medium 14, bloop 15, silencing cotton 16, damping block 17.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on ... shown in the drawings or Position relationship is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated device or element must There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " setting ", " installation ", " connected ", " connection ", Terms such as " fixations " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection;Can be that machinery connects It connects;It can be directly connected, it can also be indirectly connected through an intermediary.For the ordinary skill in the art, may be used To understand the concrete meaning of above-mentioned term in the present invention as the case may be.
- 5 are please referred to Fig.1, the present invention provides a kind of technical solution:A kind of waterproof and dampproof sound insulation type calcium silicate board, including silicon The outside of sour calcium plate 1, calcium silicate board 1 is fixedly connected with thermostat layer 2, and the inside of thermostat layer 2 offers constant temperature chamber 3, constant temperature chamber 3 Inside is fixedly connected with circulation constant temperature pipe 4, and the top of circulation constant temperature pipe 4 is fixedly connected with one end of limitation bar 5, limits the another of bar 5 One end is fixedly connected with the inner roof wall of constant temperature chamber 3, and the both sides inner wall of constant temperature chamber 3 offers multiple thermostats 6, thermostat 6 Inside is fixedly connected with constant temperature net 7, ensures the stabilization of temperature by thermostat layer 2, prevents calcium silicate board 1 from being influenced by humidity, It can ensure that temperature is recycled in the inside of constant temperature chamber 3 by circulation constant temperature pipe 4, reduce unnecessary waste, inhaled by constant temperature net 7 Heat is received or distributed, ensures that the stabilization of temperature, the outside of thermostat layer 2 are fixedly connected with drying layer 8, the inside of drying layer 8 is fixed Multiple placement plates 9 are connected with, the both ends of placement plate 9 are fixedly connected with the both sides inner wall of drying layer 8 respectively;
It is opened up between two placement plates 9 and is fixedly connected with dry packet 11 with dry slot 10, the inside of dry slot 10, passes through drying The absorbable moisture into inside calcium silicate board 1 of layer 8 ensures the drying inside calcium silicate board 1, can be absorbed by dry packet 11 Moisture prevents moisture from being impacted to calcium silicate board 1, and the outside of drying layer 8 is fixedly connected with noise reducing layer 12, and the two of noise reducing layer 12 Side offers multiple acoustic holes 13, and the inside of noise reducing layer 12 is fixedly connected with sound-absorbing medium 14, and the inside of sound-absorbing medium 14 is opened Equipped with multiple bloops 15, the inside of sound-absorbing medium 14 is fixedly connected with silencing cotton 16, and noise can be reduced by noise reducing layer 12 Propagation, extraneous noise is absorbed by acoustic hole 13, the noise transmission of absorption to the inside of sound-absorbing medium 14, passes through sound-absorbing 15 circulating transfer of bloop inside medium 14, which reduces the noise absorbed, can have to achieve the effect that sound insulation by silencing cotton 16 The transmission of noise is reduced, the volume of noise is effectively reduced, ensure that the soundproof effect of noise reducing layer 12.
A kind of optional technical solution as the present invention:The number of both sides thermostat 6 is four, and four thermostats 6 are perpendicular In line row, both sides thermostat 6 correspond, and the number of constant temperature net 7 is determined by the number of thermostat 6, facilitate storage more Temperature passes through the distribution of the correspondence equilibrium temperature of both sides thermostat 6.
A kind of optional technical solution as the present invention:The number of placement plate 9 is six, and six placement plates 9 are vertically arranged, The inclination of dry packet 11 is placed in the placement that dry packet 11 is facilitated by placement plate 9, influences the use of dry packet 11.
A kind of optional technical solution as the present invention:The number of acoustic hole 13 and bloop 15 is no less than six, more A acoustic hole 13 and bloop 15 are vertically arranged, and can facilitate the transmission of noise by multiple acoustic holes 13, are disappeared by multiple Sound hole 15 can increase the time of noise transmission, play better soundproof effect.
A kind of optional technical solution as the present invention:The inside of calcium silicate board 1 offers vacuum chamber, calcium silicate board 1 Outer surface is fixedly connected with waterproof membrane, can ensure the soundproof effect that calcium silicate board 1 has in itself by vacuum chamber, pass through waterproof Film can play the effect of waterproof.
A kind of optional technical solution as the present invention:The both ends of calcium silicate board 1 offer Silencing groove, Silencing groove it is interior Wall is fixedly connected with damping block 17, when calcium silicate board 1 is vibrated, by damping block 17 can reduce calcium silicate board 1 by The effect of vibration prevents calcium silicate board 1 to be damaged.
In conclusion the waterproof and dampproof sound insulation type calcium silicate board, in use, being absorbed by the constant temperature net 7 inside thermostat layer 2 Or temperature is distributed, ensure the balance of 3 internal temperature of constant temperature chamber, is inhaled by circulation constant temperature pipe 4 by the heat that constant temperature net 7 gives out It receives and discharge reduces the loss of heat, pass through and limit 5 fixed cycles constant warm tube 4 of bar in the inside of constant temperature chamber 3 formation cycle Position, prevent circulation constant temperature pipe 4 from falling or shaking and cause to damage, influence the normal use of circulation constant temperature pipe 4, increase cycle The practicability of constant warm tube 4 can absorb air water by the dry packet 11 inside drying layer 8, prevent water penetration to calcium silicate board 1 Inside impacts the use of calcium silicate board 1, can preferably place dry packet 11 by placement plate 9, prevent dry packet 11 It is mobile, noise is absorbed by acoustic hole 13, the noise transmission that acoustic hole 13 absorbs is to the inside of sound-absorbing medium 14, in sound-absorbing medium It is transmitted by bloop 15 inside 14, by silencing cotton 16 reduce the volume of noise during bloop 15 transmits, Facilitate the use of noise reducing layer 12.
It should be noted that in the present invention unless specifically defined or limited otherwise, fisrt feature is in second feature Can be that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact "up" or "down". Moreover, fisrt feature second feature " on ", " top " and " above " but fisrt feature right over second feature or tiltedly Top, or be merely representative of fisrt feature level height and be higher than second feature.Fisrt feature second feature " under ", " lower section " and " following " can be that fisrt feature is directly under or diagonally below the second feature, or be merely representative of fisrt feature level height and be less than the Two features.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (6)

1. a kind of waterproof and dampproof sound insulation type calcium silicate board, including calcium silicate board(1), it is characterised in that:The calcium silicate board(1)'s Outside is fixedly connected with thermostat layer(2), the thermostat layer(2)Inside offer constant temperature chamber(3), the constant temperature chamber(3)It is interior Portion is fixedly connected with circulation constant temperature pipe(4), the circulation constant temperature pipe(4)Top be fixedly connected with limitation bar(5)One end, it is described Limit bar(5)The other end and constant temperature chamber(3)Inner roof wall be fixedly connected, the constant temperature chamber(3)Both sides inner wall offer Multiple thermostats(6), the thermostat(6)Inside be fixedly connected with constant temperature net(7), the thermostat layer(2)Outside fix It is connected with drying layer(8), the drying layer(8)Inside be fixedly connected with multiple placement plates(9), the placement plate(9)Two End respectively with drying layer(8)Both sides inner wall be fixedly connected;
Two placement plates(9)Between open up and dry slot(10), the dry slot(10)Inside be fixedly connected with it is dry Dry packet(11), the drying layer(8)Outside be fixedly connected with noise reducing layer(12), the noise reducing layer(12)Both sides offer Multiple acoustic holes(13), the noise reducing layer(12)Inside be fixedly connected with sound-absorbing medium(14), the sound-absorbing medium(14)'s Inside offers multiple bloops(15), the sound-absorbing medium(14)Inside be fixedly connected with silencing cotton(16).
2. a kind of waterproof and dampproof sound insulation type calcium silicate board according to claim 1, it is characterised in that:Thermostat described in both sides (6)Number be four, four thermostats(6)It is vertically arranged, thermostat described in both sides(6)It corresponds.
3. a kind of waterproof and dampproof sound insulation type calcium silicate board according to claim 1, it is characterised in that:The placement plate(9) Number be six, six placement plates(9)It is vertically arranged.
4. a kind of waterproof and dampproof sound insulation type calcium silicate board according to claim 1, it is characterised in that:The acoustic hole(13) And bloop(15)Number be no less than six, multiple acoustic holes(13)And bloop(15)It is vertically arranged.
5. a kind of waterproof and dampproof sound insulation type calcium silicate board according to claim 1, it is characterised in that:The calcium silicate board (1)Inside offer vacuum chamber, the calcium silicate board(1)Outer surface be fixedly connected with waterproof membrane.
6. a kind of waterproof and dampproof sound insulation type calcium silicate board according to claim 1, it is characterised in that:The calcium silicate board (1)Both ends offer Silencing groove, the inner wall of the Silencing groove is fixedly connected with damping block(17).
CN201810688205.1A 2018-06-28 2018-06-28 A kind of waterproof and dampproof sound insulation type calcium silicate board Withdrawn CN108589934A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810688205.1A CN108589934A (en) 2018-06-28 2018-06-28 A kind of waterproof and dampproof sound insulation type calcium silicate board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810688205.1A CN108589934A (en) 2018-06-28 2018-06-28 A kind of waterproof and dampproof sound insulation type calcium silicate board

Publications (1)

Publication Number Publication Date
CN108589934A true CN108589934A (en) 2018-09-28

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ID=63634859

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Application Number Title Priority Date Filing Date
CN201810688205.1A Withdrawn CN108589934A (en) 2018-06-28 2018-06-28 A kind of waterproof and dampproof sound insulation type calcium silicate board

Country Status (1)

Country Link
CN (1) CN108589934A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113235839A (en) * 2021-04-24 2021-08-10 江苏中锐华东建筑设计研究院有限公司 Lattice formula building roofing horizontal support structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113235839A (en) * 2021-04-24 2021-08-10 江苏中锐华东建筑设计研究院有限公司 Lattice formula building roofing horizontal support structure
CN113235839B (en) * 2021-04-24 2022-01-07 江苏中锐华东建筑设计研究院有限公司 Lattice formula building roofing horizontal support structure

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Application publication date: 20180928

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