CN107476438B - Repairable super high-rise structure and construction method - Google Patents
Repairable super high-rise structure and construction method Download PDFInfo
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- CN107476438B CN107476438B CN201710816362.1A CN201710816362A CN107476438B CN 107476438 B CN107476438 B CN 107476438B CN 201710816362 A CN201710816362 A CN 201710816362A CN 107476438 B CN107476438 B CN 107476438B
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- 238000010276 construction Methods 0.000 title claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 126
- 239000010959 steel Substances 0.000 claims abstract description 126
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 78
- 239000004567 concrete Substances 0.000 claims abstract description 31
- 230000035939 shock Effects 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 230000008929 regeneration Effects 0.000 abstract description 2
- 238000011069 regeneration method Methods 0.000 abstract description 2
- 239000003351 stiffener Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 230000007123 defense Effects 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009430 construction management Methods 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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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
- E04B1/34—Extraordinary structures, e.g. with suspended or cantilever parts supported by masts or tower-like structures enclosing elevators or stairs; Features relating to the elastic stability
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Abstract
The invention relates to a repairable super high-rise structure and a construction method, wherein the repairable super high-rise structure comprises an outer frame formed by an outer frame column and an outer frame beam or truss, a multi-cavity steel tube concrete shear wall or an inner barrel formed by a multi-cavity steel tube reinforced concrete shear wall and a connecting beam, wherein the outer frame column and the outer frame beam or truss are positioned at the lower part or the middle lower part of the structure; an outer frame formed by outer frame columns and outer frame beams or trusses, and an inner frame formed by inner frame columns and inner frame beams, which are positioned at the middle upper part or the upper part of the structure; a support or energy consuming member is arranged between the inner frame columns. The structure of the invention has large overall bearing capacity, good ductility and strong energy consumption capability. Only a few energy-consuming supports/wallboards need to be replaced in the earthquake to be used continuously, and the earthquake energy-consuming support/wallboard has a regeneration function. Is especially suitable for super high-rise buildings.
Description
Technical Field
The invention relates to a super high-rise structural form and a construction method thereof, in particular to a super high-rise structural form which can be repaired after suffering from earthquake disasters and a construction method thereof, belonging to the technical field of super high-rise structures of constructional engineering.
Background
Super high-rise buildings in China are continuously increased, and more than 500m of buildings under construction or planned construction are up to 40 buildings according to incomplete statistics.
The traditional super high-rise structural system is usually a core tube and an outer frame, wherein the core tube is usually a reinforced concrete shear wall or a steel reinforced concrete shear wall, the outer frame is a reinforced concrete column or a steel reinforced concrete column, the defects of low energy consumption, long construction period and the like are overcome, the reconstruction can be needed to be dismantled again after the major earthquake and the huge earthquake, the solid garbage is difficult to treat, and the super high-rise structural system is a huge pollution source.
Building industrialization is the key point of national construction and development, and the opinion of the common central national institute about further strengthening urban planning construction management work (day 6 of 2016 2) clearly indicates that 'widely popularize assembled building' and 'encourage building enterprises to assemble construction and assemble on site'. And constructing a national-level assembly type building production base. The policy support force is increased, and the assembled building accounts for 30% of the newly built building in about 10 years.
The earthquake disaster is a natural disaster which causes most casualties of residents in China, wherein casualties and property loss caused by the huge earthquake disaster are main losses in the earthquake disaster. The Wenchuan earthquake causes death or missing of about 8.7 ten thousand people and injury of about 37.5 ten thousand people, and the earthquake is far from being enough to be used for dealing with huge earthquake disaster because of the limitations of the current economic conditions, technical level, department management and the like, and the earthquake is mainly focused in the earthquake-resistant field of the house structure in the earthquake-resistant practice. The proposal (2012-4-9) for soliciting opinion in place of the Chinese earthquake motion parameter demarcation map of GB18306-2001 version has been introduced into very rare earthquakes (hereinafter referred to as giant earthquakes).
How to find a suitable building industrialization technology and meet the industrialization construction requirement, and the method can effectively cope with the major earthquake and even the huge earthquake is a challenge in the building industrialization of super high-rise buildings.
Disclosure of Invention
In order to realize industrialization of the super high-rise structure and effectively cope with rare earthquakes (giant earthquakes), the invention provides a repairable super high-rise structure and a construction method.
The technical scheme of the invention is as follows:
the utility model provides a repairable super high-rise structure which characterized in that: comprising the steps of (a) a step of,
an outer frame formed by an outer frame column and an outer frame beam or truss which are positioned at the lower part or the middle lower part of the structure, a multi-cavity steel tube concrete shear wall or an inner cylinder formed by a multi-cavity steel tube reinforced concrete shear wall and a connecting beam;
an outer frame formed by outer frame columns and outer frame beams or trusses, and an inner frame formed by inner frame columns and inner frame beams, which are positioned at the middle upper part or the upper part of the structure;
a support or energy consuming member is arranged between the inner frame columns.
Preferably, an extension arm truss or/and an extension arm beam is arranged between the inner cylinder and the outer frame.
Preferably, a waist truss and/or a cap truss are arranged between the outer frame columns.
Preferably, part of the diagonal bracing members of the truss or/and inner frame are buckling restrained braces.
Preferably, the outer frame column is a steel pipe concrete column, a single-cavity steel pipe reinforced concrete column, a multi-cavity steel pipe reinforced concrete column or a combination of the above columns; the inner frame column is a steel pipe concrete column, a single-cavity steel pipe reinforced concrete column, a multi-cavity steel pipe reinforced concrete column or a combination of the above columns; the outer frame beam is a steel beam, a steel reinforced concrete beam or a steel-concrete variable stiffness beam.
Preferably, a shock insulation support is arranged between the secondary frame and the outer frame.
Specifically, the frame column of the subframe is a steel column, a steel tube reinforced concrete column or a multi-cavity steel tube reinforced concrete column.
The construction method of the repairable super high-rise structure is characterized by comprising the following steps of,
1) Constructing a foundation of the outer frame column and the inner cylinder,
2) Constructing a multi-cavity steel tube reinforced concrete shear wall and a connecting beam of the inner cylinder,
3) Constructing an outer frame column and an outer frame beam;
4) Constructing a beam or an cantilever truss between the outer frame and the inner cylinder;
5) Constructing a floor slab;
6) Repeating the steps 2-5 until the lower structure is completed;
7) An inner frame column and an inner frame beam of the upper middle inner cylinder are constructed;
8) An outer frame and an outer frame beam at the upper middle part in construction;
9) A beam or cantilever truss between the upper outer frame and the inner frame in construction;
10 Upper floor in construction;
11 Repeating the steps 7-10 to the top layer;
12 If the cantilever truss exists, after the inner cylinder and the outer cylinder are deformed stably, the cantilever truss is fixed.
Compared with the prior art, the invention has the following beneficial effects:
1. the capability of the whole building to cope with the huge shock is improved. The structure adopts the energy consumption support and/or the energy consumption wallboard as a first anti-seismic defense line, the connecting beam/Liang Zuowei as a second anti-seismic defense line and the wall/column as a third defense line. The whole structure has large bearing capacity, good ductility and strong energy consumption capability. Only a few energy-consuming supports/wallboards need to be replaced in the earthquake to be used continuously, and the earthquake energy-consuming support/wallboard has a regeneration function.
2. The construction speed is improved, construction waste is reduced, green environment-friendly construction is realized, no traditional steel mould or wood template construction can be realized in the wall, the roof beam and the board of the super high-rise building structure, the construction waste can be reduced to more than 50% on site, and in addition, part of components in the roof beam, the column and the wall can be assembled on the construction site after being prefabricated in a factory, so that the construction period and the construction quality can be greatly improved.
3. The collapse resistance of the house is greatly improved, the advantages of reinforced concrete and steel are fully exerted in the super high-rise building structural form, the multi-cavity reinforced concrete wall is restrained by the reinforced concrete, the vertical bearing capacity, the horizontal bearing capacity and the ductility are greatly improved, and the earthquake resistance of the house is greatly improved compared with that of a common reinforced concrete house, so that the house is not easy to collapse in an earthquake.
4. The fire-resistant performance of the steel tube reinforced concrete column is far better than that of a common steel structure, a good condition is provided for personnel to escape in a fire disaster, and the steel tube reinforced concrete column has special advantages especially for the occurrence of the fire disaster accompanied by the earthquake, and can reduce the injury and property loss of personnel under the coupling action of the earthquake and the fire disaster.
Drawings
FIG. 1 is a plan view of the lower portion of the structural system of the present invention;
FIG. 2 is a second upper plan view of the structural system of the present invention;
FIG. 3 is a second plan view of the lower portion of the structural system of the present invention;
FIG. 4 is a first outer frame elevation;
FIG. 5 is a second outer frame elevation with diagonal braces;
FIG. 6 is a three-dimensional outer frame with trusses;
FIG. 7 is an inner barrel elevation view I;
FIG. 8 is a second inner barrel elevation;
FIG. 9 is an elevational view of the structural system of the present invention;
FIG. 10 is a schematic elevation view of a core barrel stress wallboard;
FIG. 11 is a cross-sectional view A-A of FIG. 10;
FIG. 12 is a schematic illustration of a column to out-of-plane constraining steel plate wall connection for a multi-cavity steel tube reinforced concrete shear wall;
FIG. 13 is a schematic elevation view of an upper middle frame portion with support/buckling restrained braces;
FIG. 14 is a B-B cross-sectional view of FIG. 13;
FIG. 15 is an embodiment of an energy dissipating wallboard;
FIG. 16 is a second embodiment of an energy dissipating wallboard;
FIG. 17 shows the arrangement of reinforcing diagonal ribs in a multi-cavity steel tube reinforced concrete shear wall column;
FIG. 18 is a multi-cavity steel tube reinforced concrete shear wall with stiffeners;
FIG. 19 is an embodiment of an outer frame formed of diagonal columns and beams;
FIG. 20 is another embodiment of an outer frame formed of diagonal columns, beams, and columns;
FIG. 21 is an embodiment of an inner barrel;
FIG. 22 is another embodiment of an inner barrel;
fig. 23 shows a first embodiment of the inner barrel.
Description of the drawings:
in the figure, a 1-multi-cavity steel tube reinforced concrete shear wall; 2-an outer frame column; 3-times of frame columns; 4-outer frame beams; 5-connecting beams; 6-diagonal bracing; 7-truss; 8-an inner frame column; 9-inner frame beams; 10-energy consumption wallboards; 11-cantilever truss; 12-support/buckling restrained brace; 13-arm-extending beams; 14-a steel tube reinforced concrete column; 15-out-of-plane constraining reinforced concrete slab; 16-steel plate; 17-connecting plates; 18-loading steel beams; 19-lower steel girder; 20-bolts; 21-connecting bolts; 22-in-wall support/buckling restrained brace; 23-buckling restrained brace outer constraint; 24-inner core steel plate/support steel plate of buckling restrained brace; 25-wall openings; 26-energy consuming components; 27-energy consuming materials; 28-outer steel plate; 29-concrete; 30-stressing reinforcing steel bars; 31-oblique reinforcing steel bars; 32-wall steel plates; 33-diagonal stiffeners; 34-inclined columns, 35-inclined beams and 36-straight columns; 37-wall body; 38-a center column; 39-middle beam; 40-diagonal bracing; 41-upper beam; 42-loading the column; 43-foundation.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
First, description is made: the resulting location concepts mentioned in this application are defined as follows, lower: <50% h, middle lower: <75% H, upper: >50% H, middle upper: 25% H, middle: 25-75% H, H refers to the whole height of the whole structure, and when the specific structure is designed, a certain point or section is selected in the range according to the actual structural design requirement.
1-9, a repairable super high-rise structure comprises an outer frame and an inner cylinder, wherein the outer frame and the inner cylinder are positioned at the lower part or the middle lower part of the structure, the outer frame comprises outer frame columns 2 and outer frame beams 4, trusses 7 are arranged between the outer frame columns 2, and the inner cylinder is formed by a multi-cavity steel tube reinforced concrete shear wall and/or a multi-cavity steel tube reinforced concrete shear wall and connecting beams 5; and an outer frame and an inner frame located at an upper or middle portion of the structure; the inner frame comprises inner frame columns 8 and inner frame beams 9, energy consumption wallboards 10 and diagonal braces 6 are arranged between the inner frame columns 8, support/buckling-restrained braces 12 are arranged in the multi-cavity steel tube reinforced concrete shear wall and/or the multi-cavity steel tube reinforced concrete shear wall, a detailed view of the support/buckling-restrained braces is shown in fig. 15 and 16, and an extending arm truss 11 is arranged between the outer frame and the inner cylinder in fig. 9. In specific implementation, a secondary frame is arranged in the outer frame of the lower part, and consists of secondary frame columns 3 and secondary frame beams (not shown in the plan views of the secondary frame beams in fig. 1 and 3); in particular, referring to fig. 5, diagonal braces 6 are provided between the outer frame posts 2. Referring to fig. 8, the inner frame column 8 may also be provided with a diagonal strut 6. The outer frame column 2 may be a steel pipe concrete column, a single-cavity steel pipe reinforced concrete column, a multi-cavity steel pipe reinforced concrete column, or a combination of the above. The inner frame column 8 is a steel pipe concrete column, a single-cavity steel pipe reinforced concrete column, a multi-cavity steel pipe reinforced concrete column or a combination of the above columns. The outer frame beam is a steel beam, a steel reinforced concrete beam or a steel-concrete variable stiffness beam.
The detailed views of the stressed wallboard of the multi-cavity steel tube reinforced concrete shear wall, the steel tube reinforced concrete column 14, the upper steel beam 18 and the lower steel beam 19 (the upper steel beam 18 and the lower steel beam 19 are connecting beams) are shown in fig. 10 to 12, fig. 10 is a schematic elevation view of the stressed wallboard of the core tube (multi-cavity steel tube reinforced concrete shear wall), and fig. 11 is a cross-sectional view A-A in fig. 10; as can be seen from the figure, the out-of-plane restraint reinforced concrete slab 15 and the steel plate 16 of the multi-cavity steel tube reinforced concrete shear wall are limited in the space formed by the steel tube reinforced concrete column 14, the upper steel beam 18 and the lower steel beam 19, the out-of-plane restraint reinforced concrete slab 15 and the steel plate 16 are fixed into a whole by bolts 20, the steel plate 16 is connected with the upper steel beam 18 by a connecting plate 17 (a connection schematic diagram with the upper steel beam 18 is given in fig. 11, the steel plate 16 is also connected with the lower steel beam 19 by the connecting plate 17), and the steel plate 16 is connected with the connecting plate 17 by connecting bolts 21. Fig. 12 shows that the steel tube reinforced concrete column 14 and the steel plate 16 are also connected by a connecting plate 17.
Fig. 13 and 14 are schematic connection diagrams when a support or buckling restrained brace is arranged in the upper and middle frames, as shown in fig. 10 to 12, an out-of-plane restrained reinforced concrete slab 15 and a steel plate 16 of the multi-cavity reinforced concrete shear wall are limited in a space formed by the reinforced concrete column 14, an upper steel beam 18 and a lower steel beam 19, an in-wall support/buckling restrained brace 22 is arranged outside the out-of-plane restrained reinforced concrete slab 15, the buckling restrained brace in the wall comprises an outer buckling restrained brace restraint 23 and an inner buckling restrained brace core steel plate/support steel plate 24, the inner buckling restrained brace core steel plate/support steel plate 24 is connected with the upper steel beam 18 and the lower steel beam 19 through a connecting plate 17 (the schematic connection diagram of the inner buckling restrained brace core steel plate/support steel plate 24 and the lower steel beam 19 is also connected with the connecting plate 17 through the connecting plate 17), and the inner buckling restrained brace core steel plate/support steel plate 24 and the connecting plate 17 are connected through connecting bolts 21.
The multi-cavity reinforced concrete-filled steel tube shear wall and/or the multi-cavity reinforced concrete-filled steel tube shear wall are/is internally provided with a support/buckling-restrained brace 12, the detailed diagrams of which are shown in two typical structural forms of fig. 15 and 16, a wall opening 25 is formed in the wall body of the multi-cavity reinforced concrete-filled steel tube shear wall 1 (multi-cavity reinforced concrete-filled steel tube shear wall), and the wall opening 25 is filled with energy dissipation members 26 or energy dissipation materials 27.
Fig. 17 shows a case where a reinforcing diagonal rib is provided in a multi-cavity steel tube reinforced concrete shear wall column, the multi-cavity steel tube reinforced concrete shear wall column includes an outer steel plate 28, concrete 29 and stress steel bars 30, and an oblique reinforcing steel bar 31 is provided in the multi-cavity steel tube reinforced concrete shear wall column in order to strengthen the shear resistance of the multi-cavity steel tube reinforced concrete shear wall column.
Fig. 18 shows a case where diagonal stiffeners are provided in a multi-cavity steel-pipe reinforced concrete shear wall, diagonal stiffeners 33 are provided outside the wall steel plates 32, and the diagonal stiffeners 33 may be provided in one or two intersecting manner.
FIGS. 19 and 20 are particular versions of two outer frames, respectively, wherein the outer frame of FIG. 19 is comprised of diagonal columns 34 and diagonal beams 35; the outer frame in fig. 20 is composed of straight columns 36, diagonal columns 34 and diagonal beams 35.
In addition to the above-listed embodiments, it is also possible to make a modification of the form of fig. 21 to 23, wherein the inner cylinder structure of fig. 21 is that the lower part is composed of a wall 37, the wall 37 is a multi-cavity steel-pipe concrete shear wall, the middle part is composed of a middle column 38, a middle beam 39 and a diagonal brace 40, and the middle column is a steel-pipe reinforced concrete column or a steel-pipe concrete column; the upper part is composed of an upper beam 41 and an upper column 42, and forms an inner cylinder structure with a multi-cavity steel pipe wall at the lower part and a combination of a steel pipe column and a supporting frame at the upper part and a pure frame at the part. Unlike fig. 21, the inner cylinder structure of fig. 22 is a partially encased reinforced concrete or concrete multi-cavity concrete filled steel tube shear wall, in which a multi-cavity steel tube wall is formed in a lower portion, a combination of steel tube columns and a support frame is formed in an upper portion, and the partially encased reinforced concrete or concrete multi-cavity concrete filled steel tube shear wall is formed in a partially pure frame inner cylinder structure, and in addition, a foundation 43 is shown in fig. 22, and in fig. 21, the foundation is not shown. The difference between fig. 23 and fig. 22 is that only partially encased reinforced concrete or concrete multichambered steel concrete shear walls are not provided with a partially pure frame.
When the multi-cavity reinforced concrete-filled steel tube shear wall and/or the multi-cavity reinforced concrete-filled steel tube shear wall are/is internally provided with the supporting or/and the energy-consuming components, at least one of the supporting or/and the energy-consuming components is/are the energy-consuming supporting or energy-consuming wallboard.
In the concrete implementation, the energy consumption wallboard is a reinforced concrete wallboard, a steel plate, an out-of-plane constraint steel plate shear wall wallboard and a steel-reinforced concrete combined wallboard.
The core tube, the outer frame, the floor slab and the foundation together form a regenerated template-free super high-rise building structure system.
In the concrete implementation, more than one energy-consuming support can be arranged in the cantilever truss and the outer frame diagonal brace.
When being provided with the secondary frame, the secondary frame post can be steel column, steel pipe reinforced concrete column, and the steel pipe concrete column, the secondary frame post of frame supports or hangs on the waist truss of frame, can increase the shock insulation support between secondary frame and the major structure.
In specific implementation, the floor slab with the super high-rise structure can be a precast reinforced concrete floor slab, a precast prestressed floor slab or a steel bar truss floor slab, or a profiled steel sheet cast-in-situ reinforced concrete floor slab or a cast-in-situ concrete floor slab, and the concrete filled in the floor slab can be ordinary concrete, recycled concrete or high fly ash concrete.
In specific implementations, the super high-rise structural foundation referred to in the present application is a reinforced concrete foundation, which is an independent foundation, a raft foundation, a beam foundation, a box foundation, a pile raft foundation.
The above embodiments are only for clarity of description of the technical solution of the present invention, and not for limitation, the scope of the present invention is still defined by the scope of the appended claims.
Claims (9)
1. The utility model provides a repairable super high-rise structure which characterized in that: comprising the steps of (a) a step of,
an outer frame formed by an outer frame column and an outer frame beam or truss which are positioned at the lower part or the middle lower part of the structure, a multi-cavity steel tube concrete shear wall or an inner cylinder formed by a multi-cavity steel tube reinforced concrete shear wall and a connecting beam;
an outer frame formed by outer frame columns and outer frame beams or trusses, and an inner frame formed by inner frame columns and inner frame beams, which are positioned at the middle upper part or the upper part of the structure;
a support or energy consuming member is arranged between the inner frame columns;
and part of diagonal bracing members of the inner frame are buckling restrained braces.
2. The repairable super high-rise structure of claim 1, wherein: an extension arm truss or/and an extension arm beam is arranged between the inner cylinder and the outer frame.
3. The repairable super high-rise structure of claim 1, wherein: a waist truss and/or a cap truss are arranged between the outer frame columns; the outer frame beam is a steel beam, a steel reinforced concrete beam or a steel-concrete variable stiffness beam.
4. The repairable super high-rise structure of claim 1, wherein: the outer frame column is a steel pipe concrete column, a single-cavity steel pipe reinforced concrete column, a multi-cavity steel pipe reinforced concrete column or a combination of the above columns; the inner frame column is a steel pipe concrete column, a single-cavity steel pipe reinforced concrete column, a multi-cavity steel pipe reinforced concrete column or a combination of the above columns.
5. The repairable super high-rise structure of claim 1, wherein: a secondary frame is arranged between the outer frames of the lower part and/or the middle upper part.
6. The repairable super high-rise structure of claim 5, wherein: and a shock insulation support is arranged between the secondary frame and the outer frame.
7. The repairable super high-rise structure of claim 5 or 6, wherein: the frame column of the subframe is a steel column, a steel tube reinforced concrete column or a multi-cavity steel tube reinforced concrete column.
8. The repairable super high-rise structure of claim 5 or 6, wherein: the frame beam of the outer frame is a steel beam, a steel reinforced concrete beam or a steel-concrete variable stiffness beam.
9. The method for constructing a repairable super high-rise structure according to any one of claims 1 to 8, which comprises the steps of,
1) Constructing a foundation of the outer frame column and the inner cylinder,
2) Constructing a multi-cavity steel tube reinforced concrete shear wall and a connecting beam of the inner cylinder,
3) Constructing an outer frame column and an outer frame beam;
4) Constructing a beam or an cantilever truss between the outer frame and the inner cylinder;
5) Constructing a floor slab;
6) Repeating the steps 2-5 until the lower structure is completed;
7) An inner frame column and an inner frame beam of the upper middle inner cylinder are constructed;
8) An outer frame and an outer frame beam at the upper middle part in construction;
9) A beam or cantilever truss between the upper outer frame and the inner frame in construction;
10 Upper floor in construction;
11 Repeating the steps 7-10 to the top layer;
12 If the cantilever truss exists, after the inner cylinder and the outer cylinder are deformed stably, the cantilever truss is fixed.
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| CN109235733B (en) * | 2018-10-16 | 2020-11-27 | 北京工业大学 | Assembled plate-column system adopting prestressed steel bars and inner core bending type buckling-restrained brace |
| CN115977250B (en) * | 2023-02-01 | 2024-02-23 | 中建八局第四建设有限公司 | Assembled steel die core tube structure system and construction method |
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