CN107060075A - A kind of supporting construction connected for fabricated construction beam slab and installation method - Google Patents
A kind of supporting construction connected for fabricated construction beam slab and installation method Download PDFInfo
- Publication number
- CN107060075A CN107060075A CN201710260176.4A CN201710260176A CN107060075A CN 107060075 A CN107060075 A CN 107060075A CN 201710260176 A CN201710260176 A CN 201710260176A CN 107060075 A CN107060075 A CN 107060075A
- Authority
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- China
- Prior art keywords
- support frame
- composite beam
- adjusting bracket
- supporting plate
- bolt
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
- E04B1/04—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material
- E04B1/043—Connections specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
A kind of supporting construction connected for fabricated construction beam slab and installation method, belong to building structure technology field.The frame structure connected and composed by symmetrical two support frame by supporting plate, support frame section is triangular frame structure, its right angle avris corresponds to composite beam and superimposed sheet respectively, bolt connecting hole is provided with right-angle side with respect to composite beam side, the embedded nut of composite beam side setting is bolted to；Relative to connecting adjusting bracket on the right-angle side of superimposed sheet, when in use, supporting plate is connected with the adjusting bracket on the support frame in adjacent two composite beam, superimposed sheet is placed in above supporting plate, it is connected on two composite beams, the height of supporting plate is adjusted by the regulating bolt connected between adjusting bracket and support frame.The present invention cancels floor bottom vertical supporting, so that it is cost-effective to reduce formwork difficulty, and can meet construction precision.Execute-in-place of the present invention is simple, constructional difficulties when can effectively solve the problem that beam slab overlap joint, after pour the problem of node formwork reinforcement, support, dismounting.
Description
Technical field
The invention belongs to building structure technology field, more particularly to a kind of support connected for fabricated construction beam slab
Structure and installation method.
Background technology
Growing with assembled architecture, each component connection of assembled architecture will also become frequent and important.
In the connection of assembled arthitecutral structure component, beam -- plate connection is a kind of very common presence.In this type of attachment, overlapping
One end of plate is overlapped on the edge of composite beam, and the top of plate is sling by crane, and bottom carries out vertical supporting.
And beam-plate connecting node is primarily present three problems:
First, the problem of form bracing length.For composite beam, its protective layer is generally 15-20mm.In practical structures
During overlap joint, due to the factors such as construction environment of the scale error of component, the operation level of workmen and scene, generally
It is difficult to accurately smoothly complete overlap joint, generally require multidisciplinary personnel and coordinate for several times, adjustment repeatedly could be completed, and be difficult to simultaneously
Ensure overlap joint quality.
Second, beam -- pour problem after at the posterior nodal point of plate overlap joint.After plate is overlapped on beam, side template can using pair
Bolt is worn, but the support of end template will be sufficiently complex, and in the case where that can not ensure overlap joint quality, the support effect of end template is same
Sample can not ensure, finally influence connection stiffness.
3rd, the installation of underfloor vertical supporting and remove problem.To ensure security, the vertical supporting of floor often ten
Divide complicated, installation procedure is more and complicated.Meanwhile, substantial amounts of vertical supporting reduces the activity space of bottom.
The content of the invention
For above-mentioned in assembled architecture beam -- the beam lap of splice is not enough at plate connecting node, shuttering supporting is poured after node with
And the technical problems such as assembling and disassembling is cumbersome are supported under plate, the present invention provides a kind of support knot connected for fabricated construction beam slab
Structure and installation method.Composite beam side is connected to by embedded nut, extends the lap of splice and connects adjusting template support at top,
And with good stress performance, so as to meet the requirement of overlap joint precision.
The purpose of the present invention is achieved through the following technical solutions：
A kind of supporting construction connected for fabricated construction beam slab of the present invention, including it is symmetricly set in composite beam both sides
The adjusting bracket and supporting plate set between support frame, support frame and superimposed sheet, support frame as described above is set up in parallel two along composite beam per side
Individual, section is triangular frame structure, and its right angle avris corresponds to composite beam and superimposed sheet respectively, with respect to the right-angle side of composite beam side
On be provided with bolt connecting hole, be bolted to composite beam side setting embedded nut；Relative to the right-angle side of superimposed sheet
Upper connection adjusting bracket, when in use, is connected with supporting plate, superimposed sheet is placed in phase in the adjusting bracket on the support frame of composite beam homonymy
Above supporting plate in adjacent two composite beams, the height of supporting plate is adjusted by the regulating bolt connected between adjusting bracket and support frame.
Further, support frame as described above is the frame structure connected and composed by two triangle framework by connecting plate.
Further, the trench structure that the adjusting bracket is made up of channel-section steel, trench structure bottom plate passes through regulation with support frame
Bolt connection.
Further, the supporting plate is installed in two adjusting brackets, and its section is engaged with the trench structure of adjusting bracket.
Further, the embedded nut periphery set on the composite beam is also respectively provided with two symmetrical inclined U-shaped muscle
Reinforcement.
Further, the U-shaped inclined angle [alpha] of muscle relative level is 30-45 °.
Further, 2 embedded nuts are set on the composite beam per side, and the embedded nut of both sides is located at same horizontal line
On.
Further, the embedded nut is not connected to the termination of bolt and carries block, and the block sets along the termination circumference
Put in cross.
The installation method for the supporting construction that the present invention is connected for fabricated construction beam slab, comprises the following steps：
(1) support frame is symmetricly set in composite beam both sides two-by-two, its support frame side passes through with composite beam side respectively
Bolt connection embedded nut, bolt need not tighten fixation；
(2) support top of support is measured by spirit level, it is ensured that the top surface gap of four support frames is less than 10mm, twisted
Tight bolt；
(3) adjusting bracket is connected by regulating bolt with support frame, and supporting plate is positioned on two adjusting brackets, then carried out
Second of spirit level measurement；
(4) finely tuned by the bolt on adjusting bracket, it is ensured that supporting plate is parallel to floor；
(5) lifting superimposed sheet is placed on supporting plate, connection superimposed sheet and overlapping girder connection, and is poured.
Further, when the node poured reaches the intensity of code requirement, it is supported the dismounting of structure；Method is such as
Under；
(1) bolt on adjusting bracket is loosened, supporting plate is removed；
(2) adjusting bracket is removed；
(3) embedded nut and bolt that support frame is connected with composite beam are unclamped, removes support frame.
Beneficial effects of the present invention are：
1. the present invention composite beam and superimposed sheet junction in assembly concrete building, prefabricated mixed by being embedded in advance
Nut in solidifying soil beam supports Prefabricated stacking floor as fulcrum, independent of the border width of composite beam, cancels floor bottom
Vertical supporting, so that it is cost-effective to reduce formwork difficulty, and can meet construction precision.Meanwhile, in the supported collection of this supporting construction
In the top of structure, without bottom support, there can be substantial amounts of space to supply the activity of bottom personnel.The support of the supporting construction
Installation personnel is few needed for frame, and execute-in-place is also relatively easy, can effectively solve the problem that beam -- and the construction such as plate connection, supporting plate support is difficult
Topic.
2. the present invention is directed to assembled architecture, the branch modulus problem of node is poured after composite beam and superimposed sheet, using this hair
Bright structure can be completed once.Execute-in-place is simple, constructional difficulties when can effectively solve the problem that beam slab overlap joint, after pour node template and add
Gu, support, remove the problem of.On the premise of rational structure, make whole supporting construction that there is necessary bearing capacity and rigidity,
And meet construction safety requirement at the scene.
Brief description of the drawings
Fig. 1 is support frame of the present invention and beam slab connection diagram.
Fig. 2 is Fig. 1 side view.
Fig. 3 is scheme of installation of the present invention between two composite beams.
Fig. 4 is the structural representation of support frame of the present invention.
Fig. 5 is Fig. 4 left view.
Fig. 6 is Fig. 4 right view.
Fig. 7 is the structural representation of adjusting bracket in Fig. 1.
Fig. 8 is Fig. 7 left view.
Fig. 9 is the structural representation of embedded nut of the present invention.
Figure 10 is Fig. 9 top view.
Figure 11 is the relative position schematic diagram that embedded nut of the present invention is arranged on precast beam.
In figure：1. superimposed sheet, 2. adjusting brackets, 3. embedded nuts, 4. support frames, 5. composite beams, 6. supporting plates, 7.U type muscle,
8. block.
Embodiment
The present invention will be described in detail with reference to the accompanying drawings and examples.
Embodiment：As shown in figs 1 to 6, a kind of supporting construction connected for fabricated construction beam slab of the present invention, including
The adjusting bracket 2 set between the support frame 4 of the both sides of composite beam 5, support frame 4 and superimposed sheet 1 and supporting plate 6 are symmetricly set in, it is described
Support frame 4 is set up in parallel two per side along composite beam 5, and the section of support frame 4 is triangular frame structure, its right angle avris difference
Bolt connecting hole is provided with correspondence composite beam 5 and superimposed sheet 1, the right-angle side with respect to the side of composite beam 5, is bolted to fold
Close the embedded nut 3 that the side of beam 5 is set；Relative to adjusting bracket 2 is connected on the right-angle side of superimposed sheet 1, when in use, composite beam 5 is same
Supporting plate 6 is connected with adjusting bracket 2 on the support frame 6 of side, superimposed sheet 1 is placed in the supporting plate 6 in adjacent two composite beam 5
Side, the height of supporting plate 6 is adjusted by the regulating bolt connected between adjusting bracket 2 and support frame 4.
As Figure 4-Figure 6, wherein support frame as described above 4 is the framework connected and composed by two triangle framework by connecting plate
Structure, the agent structure of its triangular framing is welded by channel-section steel, supports top superimposed sheet 1.
As shown in Figure 7, Figure 8, the trench structure that the adjusting bracket 2 is made up of channel-section steel, trench structure bottom plate leads to support frame 4
Bolt connection is crossed, ensures the plate bottom absolute altitude of superimposed sheet 1 by being finely adjusted to bolt.The adjusting bracket 2 is used to support fixation
Supporting plate 6, the section of supporting plate 6 is engaged with the trench structure of adjusting bracket 2, in the trench structure for being installed on adjusting bracket 2.
As shown in Figure 1, shown in Figure 11, the periphery of embedded nut 3 set on the composite beam 5 is also respectively provided with symmetrical inclined
The U-shaped reinforcement of muscle 7.The U-shaped inclined angle [alpha] of muscle relative level is 30-45 °, and this example selects 45 °.As shown in figure 1, described
2 embedded nuts 3 are set on composite beam 5 per side, and the embedded nut 3 of both sides is located in same horizontal line.Support frame 4 passes through bolt
It is fixed on the embedded nut 3 in precast concrete beam 5, the load on superimposed sheet 1 is transmitted to embedded nut 3 by support frame 4, enters
One step passes to composite beam 5.Two embedded nut connecting holes are provided with support frame 4, can be connected with bolt through embedded nut
Hole, is screwed into advance embedding good embedded nut 3 and is attached with composite beam 5.Single embedded nut connecting hole can ensure
Easy construction, but the problem of there is support frame rotation, and when embedded nut connecting hole is excessive, then when can undoubtedly increase construction
The docking difficulty of embedded nut connecting hole.So can both prevent branch in the embedded nut connecting hole of a line using two central points
The rotation of support, can be effectively reduced difficulty of construction again.
As shown in Figure 2 and Figure 3, the application method for the support frame that the present invention is connected for fabricated construction beam slab, including as follows
Step：
(1) support frame 4 is symmetricly set in the both sides of composite beam 5 two-by-two, the side of support frame 4 respectively with the side of composite beam 5
Embedded nut 3 is bolted, bolt need not tighten fixation；
(2) top surface of support frame 4 is measured by spirit level, it is ensured that the top surface gap of four support frames 4 is less than 10mm,
Tighten bolt；
(3) adjusting bracket 2 is connected by regulating bolt with support frame 4, and supporting plate 6 is positioned on two adjusting brackets 2, then
Carry out second of spirit level measurement；
(4) finely tuned by the bolt on adjusting bracket 2, it is ensured that supporting plate 6 is parallel to floor；
(5) lifting superimposed sheet 1 is placed on supporting plate 6, connection superimposed sheet 1 and the node of composite beam 5, and is poured.
When the node poured reaches the intensity of code requirement, the dismounting of structure is supported；Method is as follows；
(1) bolt on adjusting bracket 2 is loosened, supporting plate is removed；
(2) adjusting bracket 2 is removed；
(3) embedded nut 3 and bolt that support frame 4 is connected with composite beam 5 are unclamped, removes support frame 4.
The present invention Path of Force Transfer be：Superimposed sheet 1 is to support frame 4, then by support frame 4 to embedded nut 3, by embedded nut
3 are transmitted to composite beam 5.So the coagulation that the bearing capacity of support frame 4 is depended at the self-strength and embedded nut 3 of embedded nut 3
Native intensity.In order that embedded nut 3 is based on drawing stress, so adjusting template support 2 is arranged at the remote of connection system for guide rail
End.Meanwhile, it is that pre-embedded bolt plus U-shaped muscle 7 at composite beam 5 carry out reinforcement.
Embodiment 2：This example is as different from Example 1：The periphery of embedded nut 3 set on composite beam 5 described in this example
It it is 30 ° provided with the U-shaped inclined angle [alpha] of muscle relative level.This example supporting plate 6 uses flitch.As shown in Figure 9, Figure 10, originally
The termination that the example embedded nut 3 is not connected to bolt carries block 8, and it is in cross knot that the block 8 is set along the termination circumference
Structure, is fixed beneficial to installing.
Embodiment 3：This example is as different from Example 1：The periphery of embedded nut 3 set on composite beam 5 described in this example
It it is 40 ° provided with the U-shaped inclined angle [alpha] of muscle relative level.
Claims (10)
1. a kind of supporting construction connected for fabricated construction beam slab, it is characterised in that：Including being symmetricly set in composite beam two
The adjusting bracket and supporting plate set between support frame, support frame and the superimposed sheet of side, support frame as described above is set side by side along composite beam per side
Two are put, section is triangular frame structure, its right angle avris corresponds to composite beam and superimposed sheet respectively, straight with respect to composite beam side
Bolt connecting hole is provided with the arm of angle, the embedded nut of composite beam side setting is bolted to；It is straight relative to superimposed sheet
Adjusting bracket is connected on the arm of angle, when in use, supporting plate is connected with the adjusting bracket on the support frame of composite beam homonymy, superimposed sheet is put
Above the supporting plate in adjacent two composite beam, the height of supporting plate is adjusted by the regulating bolt connected between adjusting bracket and support frame
Degree.
2. it is used for the supporting construction that fabricated construction beam slab is connected according to claim 1, it is characterised in that：Support frame as described above
It is the frame structure connected and composed by two triangle framework by connecting plate.
3. it is used for the supporting construction that fabricated construction beam slab is connected according to claim 1, it is characterised in that：The adjusting bracket
The trench structure being made up of channel-section steel, trench structure bottom plate is connected with support frame by regulating bolt.
4. it is used for the supporting construction that fabricated construction beam slab is connected according to claim 1, it is characterised in that：The supporting plate
It is installed in two adjusting brackets, its section is engaged with the trench structure of adjusting bracket.
5. it is used for the supporting construction that fabricated construction beam slab is connected according to claim 1, it is characterised in that：The composite beam
The embedded nut periphery of upper setting is also respectively provided with two symmetrical inclined U-shaped muscle reinforcement.
6. it is used for the supporting construction that fabricated construction beam slab is connected according to claim 5, it is characterised in that：The U-shaped muscle
The inclined angle [alpha] of relative level is 30-45 °.
7. it is used for the supporting construction that fabricated construction beam slab is connected according to claim 1, it is characterised in that：The composite beam
Upper that 2 embedded nuts are set per side, the embedded nut of both sides is located in same horizontal line.
8. it is used for the supporting construction that fabricated construction beam slab is connected according to claim 1, it is characterised in that：The pre-buried spiral shell
The termination that mother is not connected to bolt carries block, and the block is set in cross along the termination circumference.
9. the application method of the supporting construction connected as claimed in claim 1 for fabricated construction beam slab, it is characterised in that：Bag
Include following steps：
(1) support frame is symmetricly set in composite beam both sides two-by-two, its support frame side passes through bolt with composite beam side respectively
Embedded nut is connected, bolt need not tighten fixation；
(2) support top of support is measured by spirit level, it is ensured that the top surface gap of four support frames is less than 10mm, tightens spiral shell
Bolt；
(3) adjusting bracket is connected by regulating bolt with support frame, and supporting plate is positioned on two adjusting brackets, then carry out second
Secondary spirit level measurement；
(4) finely tuned by the bolt on adjusting bracket, it is ensured that supporting plate is parallel to floor；
(5) lifting superimposed sheet is placed on supporting plate, connection superimposed sheet and overlapping girder connection, and is poured.
10. the application method of the supporting construction connected as claimed in claim 9 for fabricated construction beam slab, it is characterised in that：
When the node poured reaches the intensity of code requirement, the dismounting of structure is supported；Method is as follows；
(1) bolt on adjusting bracket is loosened, supporting plate is removed；
(2) adjusting bracket is removed；
(3) embedded nut and bolt that support frame is connected with composite beam are unclamped, removes support frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710260176.4A CN107060075A (en) | 2017-04-20 | 2017-04-20 | A kind of supporting construction connected for fabricated construction beam slab and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710260176.4A CN107060075A (en) | 2017-04-20 | 2017-04-20 | A kind of supporting construction connected for fabricated construction beam slab and installation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107060075A true CN107060075A (en) | 2017-08-18 |
Family
ID=59600109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710260176.4A Pending CN107060075A (en) | 2017-04-20 | 2017-04-20 | A kind of supporting construction connected for fabricated construction beam slab and installation method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107687256A (en) * | 2017-10-13 | 2018-02-13 | 沈阳建筑大学 | Prefabricated concrete structure primary-secondary beam connecting integration support system and installation method |
| CN107905406A (en) * | 2017-12-21 | 2018-04-13 | 沈阳建筑大学 | There are height difference junction support system and installation method in fabricated shear wall plate bottom |
| CN107905554A (en) * | 2017-12-18 | 2018-04-13 | 沈阳建筑大学 | Fabricated shear wall superimposed sheet connecting integration support system and installation method |
| CN107939041A (en) * | 2017-11-24 | 2018-04-20 | 中建科技成都有限公司 | Supporting structure and high-altitude concreting method of the superimposed sheet end at composite beam |
| CN108360815A (en) * | 2018-04-18 | 2018-08-03 | 沈阳建筑大学 | Board bottom has the assembled composite beam-plate connection support device and installation method of height difference |
| CN108385887A (en) * | 2018-04-18 | 2018-08-10 | 沈阳建筑大学 | There are the assembled composite beam-plate connection support device and installation method of height difference in plate top |
| CN108643428A (en) * | 2018-05-23 | 2018-10-12 | 中铁建设集团有限公司 | A kind of height-adjustable prefabricated reinforced concrete slab |
| CN108643429A (en) * | 2018-05-23 | 2018-10-12 | 北京工业大学 | A kind of height-adjustable assembled laminated floor slab |
| CN108661224A (en) * | 2018-05-23 | 2018-10-16 | 中铁建设集团有限公司 | A kind of height-adjustable assembly concrete laminated floor slab |
| CN109518989A (en) * | 2018-12-28 | 2019-03-26 | 云南建投第二建设有限公司 | A kind of Multifunctional supporting jacking device for assembled architecture |
| CN109707173A (en) * | 2019-02-02 | 2019-05-03 | 福建工程学院 | Assembled overlaps beam slab installation auxiliary device and its construction method |
| CN114232791A (en) * | 2021-12-30 | 2022-03-25 | 甘肃安居建设工程集团有限公司 | Self-bearing system for construction load of fabricated building and construction method thereof |
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| CN105649325A (en) * | 2016-03-18 | 2016-06-08 | 中建科技河南有限公司 | Adjustable tripod supporting system and method of fabricated concrete shear wall structure |
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| CN101353912A (en) * | 2008-08-28 | 2009-01-28 | 温州建设集团公司 | Construction method of structure conversion layer concrete girder steel bracket formwork support |
| CN105649325A (en) * | 2016-03-18 | 2016-06-08 | 中建科技河南有限公司 | Adjustable tripod supporting system and method of fabricated concrete shear wall structure |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107687256A (en) * | 2017-10-13 | 2018-02-13 | 沈阳建筑大学 | Prefabricated concrete structure primary-secondary beam connecting integration support system and installation method |
| CN107939041A (en) * | 2017-11-24 | 2018-04-20 | 中建科技成都有限公司 | Supporting structure and high-altitude concreting method of the superimposed sheet end at composite beam |
| CN107905554A (en) * | 2017-12-18 | 2018-04-13 | 沈阳建筑大学 | Fabricated shear wall superimposed sheet connecting integration support system and installation method |
| CN107905406A (en) * | 2017-12-21 | 2018-04-13 | 沈阳建筑大学 | There are height difference junction support system and installation method in fabricated shear wall plate bottom |
| CN108360815A (en) * | 2018-04-18 | 2018-08-03 | 沈阳建筑大学 | Board bottom has the assembled composite beam-plate connection support device and installation method of height difference |
| CN108385887A (en) * | 2018-04-18 | 2018-08-10 | 沈阳建筑大学 | There are the assembled composite beam-plate connection support device and installation method of height difference in plate top |
| CN108643428A (en) * | 2018-05-23 | 2018-10-12 | 中铁建设集团有限公司 | A kind of height-adjustable prefabricated reinforced concrete slab |
| CN108643429A (en) * | 2018-05-23 | 2018-10-12 | 北京工业大学 | A kind of height-adjustable assembled laminated floor slab |
| CN108661224A (en) * | 2018-05-23 | 2018-10-16 | 中铁建设集团有限公司 | A kind of height-adjustable assembly concrete laminated floor slab |
| CN108661224B (en) * | 2018-05-23 | 2020-10-16 | 中铁建设集团有限公司 | But height-adjusting's assembled concrete coincide floor |
| CN109518989A (en) * | 2018-12-28 | 2019-03-26 | 云南建投第二建设有限公司 | A kind of Multifunctional supporting jacking device for assembled architecture |
| CN109518989B (en) * | 2018-12-28 | 2024-02-06 | 云南建投第二建设有限公司 | Multifunctional supporting jacking device for assembled building |
| CN109707173A (en) * | 2019-02-02 | 2019-05-03 | 福建工程学院 | Assembled overlaps beam slab installation auxiliary device and its construction method |
| CN114232791A (en) * | 2021-12-30 | 2022-03-25 | 甘肃安居建设工程集团有限公司 | Self-bearing system for construction load of fabricated building and construction method thereof |
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Application publication date: 20170818 |