CN106801514B - Lower part is equipped with the construction method and mounting structure of auditorium's structure base slab in static pressure cabin - Google Patents
Lower part is equipped with the construction method and mounting structure of auditorium's structure base slab in static pressure cabin Download PDFInfo
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- CN106801514B CN106801514B CN201710068421.1A CN201710068421A CN106801514B CN 106801514 B CN106801514 B CN 106801514B CN 201710068421 A CN201710068421 A CN 201710068421A CN 106801514 B CN106801514 B CN 106801514B
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- auditorium
- base slab
- static pressure
- structure base
- bottom plate
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
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Abstract
The invention discloses construction method and mounting structure that a kind of lower part is equipped with auditorium's structure base slab in static pressure cabin, method includes: the static pressure Ceiling of auditorium's structure base slab lower part of constructing, and the pre-buried structure built-in fitting on the static pressure Ceiling；In installation support frame and bottom plate purlin on the structure built-in fitting；In laying auditorium's structure base slab on the bottom plate purlin；In opening up the static pressure cabin air pushing hole corresponding to auditorium's seat position on auditorium's structure base slab.The present invention is by using above-mentioned construction method, auditorium's bottom plate is erected to the top of static pressure Ceiling using structure built-in fitting and support frame, the support strength of static pressure Ceiling, support frame and bottom plate purlin is enough the intensity of auditorium's structure base slab instead of original reinforced concrete structure, therefore, auditorium's structure base slab conventional steel bar concrete structure construction complicated without construction, it need to only be laid on support frame and bottom plate purlin, enormously simplify the construction of auditorium's structure base slab.
Description
Technical field
The present invention relates to structural slab construction fields more particularly to a kind of lower part to be equipped with auditorium's structure base slab in static pressure cabin
Construction method and mounting structure.
Background technique
For large-scale theater, auditorium is divided into stall and two layers of balcony, and auditorium ground is mostly arc-shaped step and absolute altitude is more,
It is constructed using conventional concrete construction, formwork erection is difficult, takes a lot of work laborious, and construction quality is difficult to ensure, structural failure
Greatly, it will put to no little inconvenience for later period decorations.Meanwhile auditorium lower part is static pressure cabin, lower wind pushing form is taken, using biography
System concrete structure, need to stay in each seat base center and set air outlet, such as reserved, needed in advance using reserved cavity form
Box out hole number it is numerous, and stay that set required precision very high, site operation is difficult to control；Though using later period water drilling open-cellular form
It can control hole location precision, but by the inevasible a large amount of main reinforcements of cutting, very big destruction caused to structure.
Summary of the invention
In order to solve above-mentioned and other potential technical problems, the embodiment provides lower parts to be equipped with static pressure
Auditorium's structure base slab construction method in cabin and lower part are equipped with the mounting structure of auditorium's structure base slab in static pressure cabin, can overcome
Traditional audience Room structure base slab construction formwork is difficult, the big problem of construction error.
The first aspect of the present invention provides a kind of reality of auditorium structure base slab construction method of the lower part equipped with static pressure cabin
Apply example comprising:
The static pressure Ceiling of construction auditorium's structure base slab lower part, and pre-buried structure is pre-buried on the static pressure Ceiling
Part；
In installation support frame and bottom plate purlin on the structure built-in fitting；
In laying auditorium's structure base slab on the bottom plate purlin；
In opening up the static pressure cabin air pushing hole corresponding to auditorium's seat position on auditorium's structure base slab.
By using above-mentioned construction method, auditorium's bottom plate is erected at static pressure cabin using structure built-in fitting and support frame
The top of bottom plate, the support strength of static pressure Ceiling, support frame and bottom plate purlin are enough to replace original reinforced concrete structure
Auditorium's structure base slab intensity, therefore, auditorium's structure base slab conventional steel bar concrete knot complicated without construction
Structure construction, need to only be laid on support frame and bottom plate purlin, enormously simplify the construction of auditorium's structure base slab.And
Using construction method of the invention, the laying of static pressure cabin air pushing hole is also facilitated, it only need to be after the completion of structure base slab be laid with, directly
The aperture on structure base slab, due to no-reinforcing-bar structure inside structure base slab, when aperture, which will not damage, causes bar construction
Cutting, will not influence the intensity of structure base slab, and without by the way of the air pushing hole of pre-buried static pressure cabin, static pressure cabin air pushing hole
It is high to lay convenient and position precision.Particularly with the situation that auditorium's structure base slab is more than arc-shaped step and absolute altitude, the present invention is applied
Work method can overcome auditorium's structure base slab absolute altitude complicated, and camber line mould installs difficult difficulty, convenient and quick construction,
And significantly less construction error.
In some embodiments, in structure base slab construction method in auditorium's of the present invention, the static pressure Ceiling is reinforcing bar
Concrete structure, the pre-buried structure built-in fitting before the concrete for pouring the static pressure Ceiling.
In some embodiments, in structure base slab construction method in auditorium's of the present invention, the static pressure Ceiling is at least
Upper surface inclination, and gradient adapts to auditorium's Retina transplantation gradient.
In some embodiments, in structure base slab construction method in auditorium's of the present invention, the structure built-in fitting includes solid
Anchor rib due to the bar construction of static pressure Ceiling and the embedded board that is horizontally placed at the top of the anchor rib, and it is described pre-buried
The concrete absolute altitude of the static pressure Ceiling of the setting height beyond corresponding position of plate.
In some embodiments, in structure base slab construction method in auditorium's of the present invention, the bottom of the embedded board with it is quiet
Grouting material is filled between ballasting bottom plate.
In some embodiments, in structure base slab construction method in auditorium's of the present invention, the support frame passes through suspension column
Structure is fixed on the structure built-in fitting, the suspension column structure include be fixed on lower suspension column at the top of the structure built-in fitting and
It is fixed on the upper suspension column of the support frame bottom, the upper suspension column is connected on the lower suspension column.
In some embodiments, in structure base slab construction method in auditorium's of the present invention, the upper suspension column and the lower prop
Sound-insulation damping cushion is equipped between foot.
In some embodiments, in structure base slab construction method in auditorium's of the present invention, auditorium's structure base slab packet
Double-layer cement fiberboard and fire-retardant clamping plate are included, the double-layer cement fiberboard is laid with and is fixed on the bottom plate purlin, described
Fire-retardant clamping plate is layed on the double-layer cement fiberboard and is fixed on the bottom plate purlin.
In some embodiments, in structure base slab construction method in auditorium's of the present invention, the double-layer cement fiberboard it
Between be equipped with deadening felt.
The second aspect of the present invention provides a kind of mounting structure of auditorium structure base slab of the lower part equipped with static pressure cabin, packet
It includes the structure built-in fitting being embedded on static pressure Ceiling, the support frame being installed on the structure built-in fitting and is installed on institute
State the bottom plate purlin on support frame, for being laid with auditorium's structure base slab.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is that the lower part of first aspect provided in the embodiment of the present invention is applied equipped with auditorium's structure base slab in static pressure cabin
The operational flowchart of work method.
Fig. 2 is that the lower part of second aspect provided in the embodiment of the present invention is equipped with auditorium's structure base slab in static pressure cabin
The elevational schematic view of mounting structure.
Fig. 3 is that the lower part of second aspect provided in the embodiment of the present invention is equipped with auditorium's structure base slab in static pressure cabin
The floor plan of mounting structure.
Fig. 4 is that the lower part of second aspect provided in the embodiment of the present invention is equipped with auditorium's structure base slab in static pressure cabin
The schematic diagram of the structure built-in fitting of mounting structure.
Fig. 5 is that the lower part of second aspect provided in the embodiment of the present invention is equipped with auditorium's structure base slab in static pressure cabin
The schematic diagram of the suspension column structure of mounting structure.
Fig. 6 is that the lower part of second aspect provided in the embodiment of the present invention is equipped with auditorium's structure base slab in static pressure cabin
Schematic diagram.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.
It should be noted that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate
The bright revealed content of book is not intended to limit the invention enforceable limit so that those skilled in the art understands and reads
Fixed condition, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, not
It influences still fall in disclosed technology contents under the effect of present invention can be generated and the purpose that can reach and obtain
In the range of capable of covering.Meanwhile it is cited such as "upper", "lower", "left", "right", " centre " and " one " in this specification
Term is merely convenient to being illustrated for narration, rather than to limit the scope of the invention, the change of relativeness or tune
It is whole, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the present invention.
In order to overcome Traditional audience Room structure base slab using structure of reinforced concrete, there are construction formwork difficulties, apply
The problems such as work error is big, the present invention provides construction methods and installation that a kind of lower part is equipped with auditorium's structure base slab in static pressure cabin
Structure is applied to the construction of auditoriums' structure base slabs such as theater, music hall, cinema, is particularly useful for solving auditorium's structure bottom
Plate is arc-shaped step and absolute altitude is more, the problem of concrete formwork difficulty.
With reference to the accompanying drawing and specific embodiment the present invention is described in further detail.
Firstly, as shown in fig.1, providing a kind of auditorium structure bottom of the lower part equipped with static pressure cabin in the embodiment of the present invention
Board construction method specifically includes that
Step 101: the static pressure Ceiling of construction auditorium's structure base slab lower part, and pre-buried structure is pre- on static pressure Ceiling
Embedded part；
Step 102: in installation support frame and bottom plate purlin on structure built-in fitting；
Step 103: in laying auditorium's structure base slab on bottom plate purlin；
Step 104: in opening up the static pressure cabin air pushing hole corresponding to auditorium's seat position on auditorium's structure base slab.
By using above-mentioned construction method, auditorium's bottom plate is erected at static pressure cabin using structure built-in fitting and support frame
The top of bottom plate, the support strength of static pressure Ceiling, support frame and bottom plate purlin are enough to replace original reinforced concrete structure
Auditorium's structure base slab intensity, therefore, auditorium's structure base slab conventional steel bar concrete knot complicated without construction
Structure construction, need to only be laid on support frame and bottom plate purlin, enormously simplify the construction of auditorium's structure base slab.
Further, in some embodiments, auditorium's structure base slab construction method of the invention, further includes: be laid with
Timber floor or carpet are laid with according to decorations way on auditorium's structure base slab of completion；Then further according to seat bit map/bitmap by
One releases the hole location of static pressure cabin air pushing hole, punches.
On the other hand, using above-mentioned construction method, the laying of static pressure cabin air pushing hole is also greatly facilitated, it only need to be at structure bottom
After the completion of plate is laid with, the aperture directly on structure base slab, due to no-reinforcing-bar structure inside structure base slab, when aperture, will not be damaged
The bad cutting for causing bar construction will not influence the intensity of structure base slab, and without using pre-buried static pressure cabin air pushing hole
Mode, it is high that static pressure cabin air pushing hole lays convenient and position precision.
Particularly with the situation that auditorium's structure base slab is more than arc-shaped step and absolute altitude, use construction method of the present invention can be with
Overcome auditorium's structure base slab absolute altitude complicated, camber line mould installs difficult difficulty, convenient and quick construction, and significantly less
Construction error.
Cooperate and provides a kind of auditorium structure bottom of the lower part equipped with static pressure cabin shown in Fig. 2 and Fig. 3 in the embodiment of the present invention
The mounting structure of plate.The mounting structure is suitable for above-mentioned auditorium's structure base slab construction method.As shown in Fig. 2, in the present embodiment
Auditorium's structure base slab mounting structure include the structure built-in fitting 12 being embedded on static pressure Ceiling 11, to be installed on structure pre-
It support frame 13 on embedded part 12 and is installed on support frame 13, the bottom plate purlin for being laid with auditorium's structure base slab
15。
In the embodiment of above-mentioned mounting structure, reinforced concrete structure is can be used in static pressure Ceiling 11, to enhance static pressure
The structural strength of Ceiling, and guarantee its support effect to auditorium's structure base slab of top.Pouring static pressure Ceiling 11
Concrete before pre-buried structure built-in fitting 12 so that after the concreting of static pressure Ceiling 11, structure built-in fitting 12 can be securely
Ground is embedded on static pressure Ceiling 11.In pre-buried structure built-in fitting 12, the position of strict control structure built-in fitting 12 and absolute altitude.
In the case of auditorium's structure base slab 11 is more than arc-shaped step and absolute altitude, static pressure Ceiling 11 is at least upper surface
Inclination, and gradient is constructed according to auditorium's Retina transplantation gradient, and embedded structure built-in fitting 12.
Cooperate shown in Fig. 4, the present invention provides a kind of structure of suitable structure built-in fitting, which includes
It is fixed on the anchor rib 121 of the bar construction of static pressure Ceiling 11 and is horizontally placed on the embedded board 122 at 121 top of anchor rib,
Anchor rib 121 and embedded board 122 are all made of structure steel fabrication.The bottom of embedded board 122 and the static pressure Ceiling 11 of corresponding position
Between gap using high-strength grouting material 120 fill it is closely knit, as shown in figure 5, embedded board 122 need to be higher by corresponding position when burying
Static pressure Ceiling 11 absolute altitude at about 5cm, convenient for grouting material clog.
Cooperate shown in Fig. 5 again, installation support frame 13 and bottom plate purlin, support are designed according to auditoria-pond-seat steelframe special project
Skeleton 13 and bottom plate purlin are all made of steel construction.Support frame 13 is fixed on structure built-in fitting 12 by suspension column structure.Such as Fig. 5
Shown, which includes suspension column 162 on suspension column 161 and one, wherein the lower suspension column 161 is connected using welding or bolt
The mode connect is fixed on the horizontally disposed embedded board 122 of structure built-in fitting 12, and the lower suspension column 161 is perpendicular to embedded board
122；Upper suspension column 162 adopts the bottom for the steel column being fixed in support frame 13 in welded or bolted way.Lower suspension column
161 and upper suspension column 162 be fixedly linked, and ensure that the center line of lower suspension column 161 and upper suspension column 162 is overlapped and perpendicular to embedded board
122, so that it is guaranteed that the load on support frame 13 can uniformly, steadily be transmitted to structure built-in fitting 12.Wherein, lower suspension column
Bolted mode can be used between 161 and upper suspension column 162 to be fixedly linked, it is easy to disassemble, in the top wing plate of lower suspension column 161
With correspond to aperture on the bottom flap of upper suspension column 162, recycle bolt, nut to be attached, it is high-strength that pressure-bearing type can be used in bolt
Bolt.Further, sound-insulation damping cushion 17 can be set between upper suspension column 162 and lower suspension column 161, shake vertical pass to reduce
It leads.Rubber sound-insulation damping cushion can be used in sound-insulation damping cushion 17 therein, and thickness is about 16mm.
Bottom plate purlin is made of zinc-plated square steel, and installation and use are identical as roof system purlin in the prior art.Along transverse and longitudinal
Direction is weldingly fixed on the top of support frame 13.Auditorium's structure base slab 14 is laid on bottom plate purlin.
Further cooperate shown in Fig. 6, a kind of suitable auditorium's structure base slab 14 is provided in the embodiment of the present invention, wraps
Include double-layer cement fiberboard 141 and the fire-retardant clamping plate 142 of single layer.Wherein, every a layer thickness of double-layer cement fiberboard 141 is about
The thickness of 15mm, fire-retardant clamping plate 142 are about 12mm.
Double-layer cement fiberboard 141 is layed on bottom plate purlin 15, and fire-retardant clamping plate 142 is layed in double-layer cement fiberboard
On 141.Further, it is equipped with deadening felt 18, between double-layer cement fiberboard 141 with reinforcement structure sound insulation damping effect.
In the present embodiment, when being laid with double-layer cement fiberboard 141, deadening felt 18 and fire-retardant clamping plate 142, firstly,
The first layer cement fibrolite plate 141 of 15mm thickness is laid on bottom plate purlin 15, it will using the hexagonal Self Drilling Screws of Ф 5.5mm × 30mm
First layer cement fibrolite plate 141 is fixed on bottom plate purlin 15；Then 12mm thickness deadening felt 18, reinforcement structure sound insulation damping are laid with
Effect；The cement fibrolite plate 141 for re-laying second layer 15mm thickness, using the hexagonal Self Drilling Screws and bottom plate of Ф 5.5mm × 50mm
Purlin 15 is fixed；It is then laid with the thick fire-retardant clamping plate 142 of 12mm, using the hexagonal Self Drilling Screws of Ф 5.5mm × 60mm and bottom
Plate purlin 15 is fixed, and constitutes auditorium's structure base slab.Finally, according to decoration on being laid with the auditorium's structure base slab completed
It fits up way and is laid with timber floor 19 or carpet；The hole location for then releasing static pressure cabin air pushing hole one by one further according to seat bit map/bitmap, into
Row punches.
It is equipped with the construction method and mounting structure of auditorium's structure base slab in static pressure cabin using lower part of the present invention, has captured biography
Concrete structure bottom plate formwork of uniting is difficult, the big difficulty of construction error, convenient and quick construction, to theater, music hall, cinema etc.
Similar building auditorium's structural slab construction has uses for reference reference significance well.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, in the range of not departing from technical solution of the present invention, when the technology contents using the disclosure above make a little change or repair
Decorations are the equivalent embodiment of equivalent variations, but anything that does not depart from the technical scheme of the invention content, technology according to the present invention are real
Matter any simple modification, equivalent change and modification to the above embodiments, still fall within the range of technical solution of the present invention
It is interior.
Claims (9)
1. auditorium's structure base slab construction method that a kind of lower part is equipped with static pressure cabin characterized by comprising
The static pressure Ceiling of construction auditorium's structure base slab lower part, and the pre-buried structure built-in fitting on the static pressure Ceiling；
In installation support frame and bottom plate purlin on the structure built-in fitting；
In laying auditorium's structure base slab on the bottom plate purlin；
In opening up the static pressure cabin air pushing hole corresponding to auditorium's seat position on auditorium's structure base slab.
2. structure base slab construction method in auditorium's as described in claim 1, it is characterised in that: the static pressure Ceiling is reinforcing bar
Concrete structure, the pre-buried structure built-in fitting before the concrete for pouring the static pressure Ceiling.
3. structure base slab construction method in auditorium's as claimed in claim 2, it is characterised in that: the structure built-in fitting includes solid
Anchor rib due to the bar construction of static pressure Ceiling and the embedded board that is horizontally placed at the top of the anchor rib, and it is described pre-buried
The concrete absolute altitude of the static pressure Ceiling of the setting height beyond corresponding position of plate.
4. structure base slab construction method in auditorium's as claimed in claim 3, it is characterised in that: the bottom of the embedded board with it is quiet
Grouting material is filled between ballasting bottom plate.
5. structure base slab construction method in auditorium's as described in claim 1, it is characterised in that: the support frame passes through suspension column
Structure is fixed on the structure built-in fitting, the suspension column structure include be fixed on lower suspension column at the top of the structure built-in fitting and
It is fixed on the upper suspension column of the support frame bottom, the upper suspension column is connected on the lower suspension column.
6. structure base slab construction method in auditorium's as claimed in claim 5, it is characterised in that: the upper suspension column and the lower prop
Sound-insulation damping cushion is equipped between foot.
7. such as structure base slab construction method in auditorium's according to any one of claims 1 to 6, it is characterised in that: the spectators
Room structure base slab includes double-layer cement fiberboard and fire-retardant clamping plate, and the double-layer cement fiberboard is laid with and is fixed on the bottom plate
On purlin, the fire-retardant clamping plate is layed on the double-layer cement fiberboard and is fixed on the bottom plate purlin.
8. structure base slab construction method in auditorium's as claimed in claim 7, it is characterised in that: the double-layer cement fiberboard it
Between be equipped with deadening felt.
9. the mounting structure that a kind of lower part is equipped with auditorium's structure base slab in static pressure cabin, which is characterized in that including being embedded in static pressure
Structure built-in fitting on Ceiling, the support frame being installed on the structure built-in fitting and it is installed on the support frame
Upper, the bottom plate purlin for being laid with auditorium's structure base slab.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710068421.1A CN106801514B (en) | 2017-02-08 | 2017-02-08 | Lower part is equipped with the construction method and mounting structure of auditorium's structure base slab in static pressure cabin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710068421.1A CN106801514B (en) | 2017-02-08 | 2017-02-08 | Lower part is equipped with the construction method and mounting structure of auditorium's structure base slab in static pressure cabin |
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| Publication Number | Publication Date |
|---|---|
| CN106801514A CN106801514A (en) | 2017-06-06 |
| CN106801514B true CN106801514B (en) | 2019-02-26 |
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| CN201710068421.1A Active CN106801514B (en) | 2017-02-08 | 2017-02-08 | Lower part is equipped with the construction method and mounting structure of auditorium's structure base slab in static pressure cabin |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1525586A (en) * | 1975-04-04 | 1978-09-20 | Bosson J | Steps device |
| GB2103261A (en) * | 1981-06-12 | 1983-02-16 | Anthony Douglas Harvey | Stage |
| CN101498490A (en) * | 2008-01-29 | 2009-08-05 | 中建国际（深圳）设计顾问有限公司 | Air supply system under seat |
| CN202166160U (en) * | 2011-07-14 | 2012-03-14 | 深圳市洪涛装饰股份有限公司 | Theatre plenum box sound-insulation and heat-preservation structure |
| CN104088481A (en) * | 2014-07-18 | 2014-10-08 | 北京城建建设工程有限公司 | Sandwich composite glass fiber reinforced plastic plenum chamber for auditorium and construction method thereof |
-
2017
- 2017-02-08 CN CN201710068421.1A patent/CN106801514B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1525586A (en) * | 1975-04-04 | 1978-09-20 | Bosson J | Steps device |
| GB2103261A (en) * | 1981-06-12 | 1983-02-16 | Anthony Douglas Harvey | Stage |
| CN101498490A (en) * | 2008-01-29 | 2009-08-05 | 中建国际（深圳）设计顾问有限公司 | Air supply system under seat |
| CN202166160U (en) * | 2011-07-14 | 2012-03-14 | 深圳市洪涛装饰股份有限公司 | Theatre plenum box sound-insulation and heat-preservation structure |
| CN104088481A (en) * | 2014-07-18 | 2014-10-08 | 北京城建建设工程有限公司 | Sandwich composite glass fiber reinforced plastic plenum chamber for auditorium and construction method thereof |
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| Publication number | Publication date |
|---|---|
| CN106801514A (en) | 2017-06-06 |
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