CN109944358B - L-shaped node of stirrup bent anchor type steel concrete combined pipe - Google Patents
L-shaped node of stirrup bent anchor type steel concrete combined pipe Download PDFInfo
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- CN109944358B CN109944358B CN201910273266.6A CN201910273266A CN109944358B CN 109944358 B CN109944358 B CN 109944358B CN 201910273266 A CN201910273266 A CN 201910273266A CN 109944358 B CN109944358 B CN 109944358B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 201
- 239000010959 steel Substances 0.000 title claims abstract description 201
- 239000004567 concrete Substances 0.000 title claims abstract description 116
- 238000010008 shearing Methods 0.000 claims description 83
- 238000005336 cracking Methods 0.000 claims description 31
- 239000002131 composite material Substances 0.000 claims description 30
- 238000003466 welding Methods 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 claims description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims 2
- 238000010276 construction Methods 0.000 abstract description 8
- 238000009417 prefabrication Methods 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 238000011065 in-situ storage Methods 0.000 abstract description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The stirrup bending anchor type steel concrete combined pipe L-shaped node comprises a first steel concrete combined pipe and a second steel concrete combined pipe which are mutually perpendicular, wherein the right side end part of the first steel concrete combined pipe is exposed out of a first groove-shaped steel plate structure, the second steel concrete combined pipe is exposed out of a second groove-shaped steel plate structure at the rear side end part adjacent to the first groove-shaped steel plate structure, a steel bar net-shaped framework is arranged between the exposed first groove-shaped steel plate structure and the exposed second groove-shaped steel plate structure, and the steel bar net-shaped framework is respectively bent and anchored with the first groove-shaped steel plate structure and the second groove-shaped steel plate structure into a whole; the invention can greatly improve the connection strength of the L-shaped joint between two steel concrete combined pipes, ensure the connection reliability, combine cast-in-situ with prefabrication, facilitate construction, have high construction efficiency, ensure the construction quality and completely meet the use requirements of the whole stress, energy conservation, earthquake resistance and the like of modern fabricated buildings.
Description
Technical Field
The invention belongs to the technical field of assembly type building construction, and particularly relates to an L-shaped node of a stirrup bent anchor type steel concrete combined pipe.
Background
The key of the problem is that the joint connection between the steel concrete composite pipes is not formed, the L-shaped joint is one of the most common joints of the fabricated building, the structure of the existing L-shaped joint is not strong in structural integrity, poor in shock resistance and easy to cause deformation and crack generation of the fabricated wall, and the connection form of the L-shaped joint cannot meet the use function of the fabricated building with higher requirements.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides the L-shaped node of the stirrup bent anchor type reinforced concrete composite pipe, which has the advantages of compact and reasonable structure, balanced stress, strong stability and strong wind resistance and shock resistance.
In order to solve the technical problems, the invention adopts the following technical scheme: the stirrup bending anchor type steel concrete composite pipe L-shaped node comprises a first steel concrete composite pipe and a second steel concrete composite pipe which are mutually perpendicular, wherein a first concrete layer is poured on the outer side part of the first steel concrete composite pipe, a second concrete layer is poured on the outer side part of the second steel concrete composite pipe, the right side end part of the first steel concrete composite pipe is exposed out of a first groove-type steel plate structure, the second steel concrete composite pipe is exposed out of a second groove-type steel plate structure at the rear side end part adjacent to the first groove-type steel plate structure, a steel bar net-shaped skeleton is arranged between the exposed first groove-type steel plate structure and the exposed second groove-type steel plate structure, and the steel bar net-shaped skeleton is respectively bent and anchored into a whole with the first groove-type steel plate structure and the second groove-type steel plate structure;
The steel bar net-shaped framework comprises vertical steel bars, first U-shaped shearing resistant stirrups, second U-shaped shearing resistant stirrups and rectangular shearing resistant stirrups, wherein the vertical steel bars are arranged along the vertical direction, the first U-shaped shearing resistant stirrups, the second U-shaped shearing resistant stirrups and the rectangular shearing resistant stirrups are all horizontally arranged, the vertical steel bars are provided with at least six vertical steel bars and are arranged in a rectangular array, first perforations are correspondingly formed in the front side and the rear side of the first groove-shaped steel plate structure in a front-rear mode, the open side of the first U-shaped shearing resistant stirrups faces to the left and is located on the front side and the rear side of the first groove-shaped steel plate structure, two ends of the left end of the first U-shaped shearing resistant stirrups are bent to penetrate through the first perforations on the corresponding sides and extend into the inside of the first groove-shaped steel plate structure, and the right side of the first U-shaped shearing resistant stirrups bypasses at least two vertical steel bars and is in spot welding with the adjacent vertical steel bars; the left side and the right side of the second channel steel plate structure are correspondingly provided with second perforations left and right, the open side of the second U-shaped shearing resistant stirrup faces forward and is positioned at the left side and the right side of the second channel steel plate structure, two ends of the front end of the second U-shaped shearing resistant stirrup are bent and extend into the second channel steel plate structure through the second perforations at the corresponding sides, and the rear side of the second U-shaped shearing resistant stirrup bypasses at least two vertical steel bars and is integrated with adjacent vertical steel bars through spot welding; the rectangular shearing resistant stirrups are sleeved outside all the vertical steel bars and bound with the vertical steel bars in a one-to-one correspondence manner.
A third perforation is formed in the right side of the first groove-type steel plate structure, a first shear rib is horizontally arranged in the third perforation in a penetrating mode, the right end of the first shear rib is in spot welding with the middle of the right end of the first U-shaped shear stirrup, and the left end of the first shear rib extends into the first groove-type steel plate structure;
A fourth perforation is formed in the rear side of the second groove-type steel plate structure, a second shearing resistant rib is horizontally arranged in the fourth perforation in a penetrating mode, the rear end of the second shearing resistant rib is in spot welding with the middle of the rear end of the second U-shaped shearing resistant stirrup, and the front end of the second shearing resistant rib extends into the second groove-type steel plate structure.
The first U-shaped shearing resistant stirrup, the second U-shaped shearing resistant stirrup, the rectangular shearing resistant stirrup, the first shearing resistant stirrup and the second shearing resistant stirrup are all provided with a plurality of layers along the length direction of the vertical steel bar.
The first concrete layer outside the first steel concrete composite pipe is embedded with a first tie anti-cracking net piece, the right side edge of the first tie anti-cracking net piece is positioned outside the exposed first groove-shaped steel plate structure and is flush with the right end part of the first groove-shaped steel plate structure, and the first tie anti-cracking net piece and the first U-shaped shear stirrup are welded into a whole.
The second steel concrete combined pipe is characterized in that a second tie anti-cracking net piece is embedded in a second concrete layer outside the second steel concrete combined pipe, the rear side edge of the second tie anti-cracking net piece is positioned outside the exposed second groove-type steel plate structure and is flush with the rear end part of the second groove-type steel plate structure, and the second tie anti-cracking net piece and the second U-shaped shear stirrup are welded into a whole.
The outer parts of the reinforcement mesh skeleton and the exposed first and second tie anti-cracking meshes are poured with concrete blocks with L-shaped cross sections, and the outer side surfaces of the concrete blocks are respectively correspondingly connected with the outer surfaces of the first and second concrete layers and kept flush.
By adopting the technical scheme, the first concrete layer outside the first steel concrete combined pipe, the pre-buried first tie anti-cracking net sheet, the second concrete layer outside the second steel concrete combined pipe and the pre-buried second tie anti-cracking net sheet are prefabricated in a factory. When the first groove-shaped steel plate structure, the right end part of the first tie anti-cracking net sheet and the rear end parts of the second groove-shaped steel plate structure and the second tie anti-cracking net sheet are exposed outside during factory prefabrication.
The first steel concrete combined pipe and the second steel concrete combined pipe are assembled and constructed after being transported to a construction site, the first steel concrete combined pipe and the second steel concrete combined pipe are vertically arranged, a steel mesh skeleton is arranged in an L-shaped space between a first groove-shaped steel plate structure and a second groove-shaped steel plate structure which are exposed outside, a part of vertical steel bars and a first groove-shaped steel plate structure are connected into a whole through a first U-shaped shearing resistant stirrup, a part of vertical steel bars and a second groove-shaped steel plate structure are connected into a whole through a second U-shaped shearing resistant stirrup, all the vertical steel bars are connected into a whole through a rectangular shearing resistant stirrup, finally concrete is poured and solidified into concrete blocks, and therefore the first steel concrete combined pipe and the second steel concrete combined pipe are firmly connected into a whole. The first tie anti-cracking net sheet and the second tie anti-cracking net sheet are also poured into the concrete block, so that the appearance of the joint between the first concrete layer and the concrete block and the appearance of the joint between the second concrete layer and the concrete block are not cracked. And simultaneously pouring the concrete blocks, respectively pouring inner concrete in the first steel concrete combined pipe and the second steel concrete combined pipe, connecting the first shearing resistant ribs and the bent first U-shaped shearing resistant stirrups with the first steel concrete combined pipe into a whole, connecting the second shearing resistant ribs and the bent second U-shaped shearing resistant stirrups with the second steel concrete combined pipe into a whole, and in addition, the apertures of the first perforation, the second perforation, the third perforation and the fourth perforation are all larger than the diameters of penetrating the shearing resistant stirrups or the shearing resistant ribs, so that the L-shaped concrete blocks are connected with the left inner concrete and the front inner concrete into a whole, and further improving the connection strength of the L-shaped nodes.
The first U-shaped shearing resistant stirrup is anchored with the first groove-shaped steel plate structure into a whole after being bent, the second U-shaped shearing resistant stirrup is anchored with the second groove-shaped steel plate structure into a whole after being bent, the connection strength is extremely strong, and the connection reliability of two adjacent sections of steel concrete combined pipes is ensured.
In summary, the invention can greatly improve the connection strength of the L-shaped joint between two steel concrete combined pipes, ensure the connection reliability, combine cast-in-situ with prefabrication, facilitate construction, have high construction efficiency, ensure the construction quality and completely meet the use requirements of the modern fabricated building such as integral stress, energy conservation, earthquake resistance and the like.
Drawings
FIG. 1 is a schematic plan view of the present invention;
FIG. 2 is a schematic illustration of the connection of the first steel reinforced concrete composite pipe and the first U-shaped shear stirrup of FIG. 1;
FIG. 3 is a schematic illustration of the connection of the second steel concrete composite tube and the second U-shaped shear stirrup of FIG. 1;
Fig. 4 is a schematic view of the rectangular shear stirrup of fig. 1.
Detailed Description
As shown in fig. 1-4, the L-shaped node of the stirrup bent anchor type steel concrete composite pipe comprises a first steel concrete composite pipe and a second steel concrete composite pipe which are mutually vertical, wherein a first concrete layer 1 is poured on the outer side part of the first steel concrete composite pipe, a second concrete layer 2 is poured on the outer side part of the second steel concrete composite pipe, the right end part of the first steel concrete composite pipe is exposed out of a first groove type steel plate structure 3, the second steel concrete composite pipe is exposed out of a second groove type steel plate structure 4 at the rear end part adjacent to the first groove type steel plate structure 3, a steel bar net-shaped framework is arranged between the exposed first groove type steel plate structure 3 and the exposed second groove type steel plate structure 4, and the steel bar net-shaped framework is respectively bent and anchored with the first groove type steel plate structure 3 and the second groove type steel plate structure 4 into a whole;
The steel bar net-shaped framework comprises vertical steel bars 5, first U-shaped shearing resistant hoops 6, second U-shaped shearing resistant hoops 7 and rectangular shearing resistant hoops 8, the vertical steel bars 5 are arranged in the vertical direction, the first U-shaped shearing resistant hoops 6, the second U-shaped shearing resistant hoops 7 and the rectangular shearing resistant hoops 8 are horizontally arranged, the vertical steel bars 5 are provided with at least six and are arranged in a rectangular array, first perforations are correspondingly formed in the front side and the rear side of the first groove-shaped steel plate structure 3 in a front-rear mode, the open side of the first U-shaped shearing resistant hoops 6 faces left and is located in the front side and the rear side of the first groove-shaped steel plate structure 3, two ends of the left end of the first U-shaped shearing resistant hoops 6 are bent to penetrate through the first perforations on the corresponding sides and extend into the first groove-shaped steel plate structure 3, and the right side of the first U-shaped shearing resistant hoops 6 bypasses at least two vertical steel bars 5 and is spot-welded with the adjacent steel bars 5 into a whole; the left side and the right side of the second groove-shaped steel plate structure 4 are correspondingly provided with second perforations left and right, the open side of the second U-shaped shearing resistant stirrup 7 faces forward and is positioned at the left side and the right side of the second groove-shaped steel plate structure 4, two ends of the front end of the second U-shaped shearing resistant stirrup 7 are bent and extend into the second groove-shaped steel plate structure 4 through the second perforations at the corresponding sides, and the rear side of the second U-shaped shearing resistant stirrup 7 bypasses at least two vertical steel bars 5 and is in spot welding integration with the adjacent vertical steel bars 5; the rectangular shearing resistant stirrups 8 are sleeved outside all the vertical steel bars 5 and bound with the vertical steel bars 5 in a one-to-one correspondence.
A third perforation is formed in the right side of the first groove-shaped steel plate structure 3, a first shear rib 9 is horizontally arranged in the third perforation in a penetrating mode, the right end of the first shear rib 9 is in spot welding with the middle of the right end of the first U-shaped shear stirrup 6, and the left end of the first shear rib 9 extends into the first groove-shaped steel plate structure 3;
A fourth perforation is formed in the rear side of the second groove-shaped steel plate structure 4, a second shearing resistant rib 10 is horizontally arranged in the fourth perforation in a penetrating mode, the rear end of the second shearing resistant rib 10 is in spot welding with the middle of the rear end of the second U-shaped shearing resistant stirrup 7, and the front end of the second shearing resistant rib 10 extends into the second groove-shaped steel plate structure 4.
The first concrete layer 1 outside the first steel concrete composite pipe is embedded with a first tie anti-cracking net piece 11, the right side edge of the first tie anti-cracking net piece 11 is positioned outside the exposed first groove-shaped steel plate structure 3 and is flush with the right end part of the first groove-shaped steel plate structure 3, and the first tie anti-cracking net piece 11 and the first U-shaped shear stirrup 6 are welded into a whole.
The second concrete layer 2 outside the second steel concrete composite pipe is embedded with a second tie anti-cracking net piece 12, the rear side edge of the second tie anti-cracking net piece 12 is positioned outside the exposed second groove-shaped steel plate structure 4 and is flush with the rear end part of the second groove-shaped steel plate structure 4, and the second tie anti-cracking net piece 12 and the second U-shaped shear stirrup 7 are welded into a whole.
The first U-shaped shearing resistant stirrup 6, the second U-shaped shearing resistant stirrup 7, the rectangular shearing resistant stirrup 8, the first shearing resistant stirrup 9 and the second shearing resistant stirrup 10 are all provided with a plurality of layers along the length direction of the vertical steel bar 5.
The outer parts of the reinforcement mesh-shaped framework and the exposed first and second tie anti-cracking meshes 11 and 12 are poured with concrete blocks 13 with L-shaped cross sections, and the outer side surfaces of the concrete blocks 13 are correspondingly connected with the outer surfaces of the first and second concrete layers 1 and 2 respectively and kept flush.
The first concrete layer 1, the pre-buried first tie anti-cracking net sheet 11, the second concrete layer 2 and the pre-buried second tie anti-cracking net sheet 12 are prefabricated in factories. The first channel steel plate structure 3, the right end of the first tie anti-crack net sheet 11, and the rear end of the second channel steel plate structure 4 and the second tie anti-crack net sheet 12 are exposed outside at the time of factory prefabrication.
The first steel concrete combined pipe and the second steel concrete combined pipe are assembled and constructed after being transported to a construction site, the first steel concrete combined pipe and the second steel concrete combined pipe are vertically arranged, a steel mesh skeleton is arranged in an L-shaped space between the first groove-shaped steel plate structure 3 and the second groove-shaped steel plate structure 4 which are exposed outside, a part of vertical steel bars 5 and the first groove-shaped steel plate structure 3 are connected into a whole by a first U-shaped shear-resistant stirrup 6, a part of vertical steel bars 5 of the second U-shaped shear-resistant stirrup 7 and the second groove-shaped steel plate structure 4 are connected into a whole, all the vertical steel bars 5 are connected into a whole by a rectangular shear-resistant stirrup 8, finally concrete is poured and solidified into a concrete block 13, and the first steel concrete combined pipe and the second steel concrete combined pipe are firmly connected into a whole. The first tie anti-cracking net 11 and the second tie anti-cracking net 12 are also poured into the concrete block 13, so that the appearance of the joint between the first concrete layer 1 and the concrete block 13 and the appearance of the joint between the second concrete layer 2 and the concrete block 13 are not cracked. The inner concrete is respectively poured in the first steel concrete combined pipe and the second steel concrete combined pipe while the concrete block 13 is poured, so that the first shearing resistant rib 9 and the bent first U-shaped shearing resistant stirrup 6 are connected with the first steel concrete combined pipe into a whole, the second shearing resistant rib 10 and the bent second U-shaped shearing resistant stirrup 7 are connected with the second steel concrete combined pipe into a whole, in addition, the apertures of the first perforation, the second perforation, the third perforation and the fourth perforation are all larger than the diameters of penetrating the shearing resistant stirrups or the shearing resistant ribs, and the L-shaped concrete block 13 can be connected with the left inner concrete and the front inner concrete into a whole, and the connection strength of the L-shaped node is further improved.
The present embodiment is not limited in any way by the shape, material, structure, etc. of the present invention, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present invention are all included in the scope of protection of the technical solution of the present invention.
Claims (4)
1. The utility model provides a bent anchor formula steel concrete composite pipe L type node of stirrup, includes mutually perpendicular's first steel concrete composite pipe and second steel concrete composite pipe, and first concrete layer has been pour to first steel concrete composite pipe outside portion, and second concrete layer has been pour to second steel concrete composite pipe outside portion, its characterized in that: the right end part of the first steel concrete combined pipe is exposed out of the first groove-shaped steel plate structure, the rear end part of the second steel concrete combined pipe, which is adjacent to the first groove-shaped steel plate structure, is exposed out of the second groove-shaped steel plate structure, a reinforcing steel mesh skeleton is arranged between the exposed first groove-shaped steel plate structure and the exposed second groove-shaped steel plate structure, and the reinforcing steel mesh skeleton is respectively bent and anchored with the first groove-shaped steel plate structure and the second groove-shaped steel plate structure into a whole;
The steel bar net-shaped framework comprises vertical steel bars, first U-shaped shearing resistant stirrups, second U-shaped shearing resistant stirrups and rectangular shearing resistant stirrups, wherein the vertical steel bars are arranged along the vertical direction, the first U-shaped shearing resistant stirrups, the second U-shaped shearing resistant stirrups and the rectangular shearing resistant stirrups are all horizontally arranged, the vertical steel bars are provided with at least six vertical steel bars and are arranged in a rectangular array, first perforations are correspondingly formed in the front side and the rear side of the first groove-shaped steel plate structure in a front-rear mode, the open side of the first U-shaped shearing resistant stirrups faces to the left and is located on the front side and the rear side of the first groove-shaped steel plate structure, two ends of the left end of the first U-shaped shearing resistant stirrups are bent to penetrate through the first perforations on the corresponding sides and extend into the inside of the first groove-shaped steel plate structure, and the right side of the first U-shaped shearing resistant stirrups bypasses at least two vertical steel bars and is in spot welding with the adjacent vertical steel bars; the left side and the right side of the second channel steel plate structure are correspondingly provided with second perforations left and right, the open side of the second U-shaped shearing resistant stirrup faces forward and is positioned at the left side and the right side of the second channel steel plate structure, two ends of the front end of the second U-shaped shearing resistant stirrup are bent and extend into the second channel steel plate structure through the second perforations at the corresponding sides, and the rear side of the second U-shaped shearing resistant stirrup bypasses at least two vertical steel bars and is integrated with adjacent vertical steel bars through spot welding; the rectangular shearing resistant stirrups are sleeved outside all the vertical steel bars and bound with the vertical steel bars in a one-to-one correspondence manner;
a third perforation is formed in the right side of the first groove-type steel plate structure, a first shear rib is horizontally arranged in the third perforation in a penetrating mode, the right end of the first shear rib is in spot welding with the middle of the right end of the first U-shaped shear stirrup, and the left end of the first shear rib extends into the first groove-type steel plate structure;
a fourth perforation is formed in the rear side of the second groove-type steel plate structure, a second shearing resistant rib is horizontally arranged in the fourth perforation in a penetrating mode, the rear end of the second shearing resistant rib is in spot welding with the middle of the rear end of the second U-shaped shearing resistant stirrup, and the front end of the second shearing resistant rib extends into the second groove-type steel plate structure;
The first concrete layer outside the first steel concrete composite pipe is embedded with a first tie anti-cracking net piece, the right side edge of the first tie anti-cracking net piece is positioned outside the exposed first groove-shaped steel plate structure and is flush with the right end part of the first groove-shaped steel plate structure, and the first tie anti-cracking net piece and the first U-shaped shear stirrup are welded into a whole.
2. The stirrup bent anchor type steel concrete composite pipe L-shaped node according to claim 1, wherein: the first U-shaped shearing resistant stirrup, the second U-shaped shearing resistant stirrup, the rectangular shearing resistant stirrup, the first shearing resistant stirrup and the second shearing resistant stirrup are all provided with a plurality of layers along the length direction of the vertical steel bar.
3. The stirrup bent anchor type steel concrete composite pipe L-shaped node according to claim 1, wherein: the second steel concrete combined pipe is characterized in that a second tie anti-cracking net piece is embedded in a second concrete layer outside the second steel concrete combined pipe, the rear side edge of the second tie anti-cracking net piece is positioned outside the exposed second groove-type steel plate structure and is flush with the rear end part of the second groove-type steel plate structure, and the second tie anti-cracking net piece and the second U-shaped shear stirrup are welded into a whole.
4. The stirrup bent anchor type steel concrete composite pipe L-shaped node according to claim 3, wherein: the outer parts of the reinforcement mesh skeleton and the exposed first and second tie anti-cracking meshes are poured with concrete blocks with L-shaped cross sections, and the outer side surfaces of the concrete blocks are respectively correspondingly connected with the outer surfaces of the first and second concrete layers and kept flush.
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| CN201910273266.6A CN109944358B (en) | 2019-04-04 | 2019-04-04 | L-shaped node of stirrup bent anchor type steel concrete combined pipe |
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| CN201910273266.6A CN109944358B (en) | 2019-04-04 | 2019-04-04 | L-shaped node of stirrup bent anchor type steel concrete combined pipe |
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| CN109944358B true CN109944358B (en) | 2024-05-03 |
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| CA2867964C (en) * | 2014-10-16 | 2016-04-12 | Emin Buzimkic | Prefabricated modular rebar modules and methods of using the same |
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| KR20120058696A (en) * | 2010-11-26 | 2012-06-08 | 이창남 | On-site Joint of the Prefabricated Re-bar Column to Re-bar Girders |
| CN103835404A (en) * | 2014-03-21 | 2014-06-04 | 北京工业大学 | Foamed concrete bearing wall wrapped with wire mesh mortar boards and provided with L-shaped frame and construction method |
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