CN101881082B - Construction method for releasing strong restraint stress of steel connecting rods of oblique and stiffened concrete structures - Google Patents
Construction method for releasing strong restraint stress of steel connecting rods of oblique and stiffened concrete structures Download PDFInfo
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- CN101881082B CN101881082B CN2010101141418A CN201010114141A CN101881082B CN 101881082 B CN101881082 B CN 101881082B CN 2010101141418 A CN2010101141418 A CN 2010101141418A CN 201010114141 A CN201010114141 A CN 201010114141A CN 101881082 B CN101881082 B CN 101881082B
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Abstract
The invention relates to a building construction method, and discloses a construction method for releasing strong welded connection restraint stress of steel connecting rods on upper parts of two stiffened concrete structures which are oblique relatively. The construction method comprises the following steps: A, carrying out concrete pouring on floors and beams of the nth storey in one building; correspondingly setting after-cast section areas on which concrete pouring does not be carried out temporarily, at a place, which is required to be connected with a steel connecting rod, on nth storey in the other building, and constructing concrete pouring on the remaining floors and beams thereof; B, carrying out installation of steel connecting rods between nth floors of two oblique and stiffened concrete structures; and C, carrying out concrete pouring in the after-cast areas on the nth storey of the oblique and stiffened concrete structure of the other building after finishing installation of the steel connecting rods, completely cooling and fully releasing strong restrain stress. By adopting the construction technology of reasonably presetting the after-cast section areas, the invention enables the strong restrain stress generated by the steel connecting rods to be released successfully, enables the construction to meet structure design requirements, simultaneously, accelerates construction speed and achieves obvious economic benefits and social benefits.
Description
Technical field
The present invention relates to a kind of construction techniques, be specifically related to a kind of job practices of releasing strong restraint stress of steel connecting rods of oblique and stiffened concrete structures.
Background technology
The strengthening concrete structure is a kind ofly to adopt shaped steel or be welded into the concrete structure of shaped steel form as skeleton with steel plate, because this kind concrete structure has that supporting capacity is big, anti-seismic performance good and advantage such as easy construction, is applied to more and more at present in highrise building and the long span building structure.
At present, adopt the building of tilting strengthening concrete structure to be made up of a class building by two, the incline direction of two buildings is relative.Because therefore the center of gravity of tilting strengthening concrete structure and center of rigidity skew need on the top of two buildings the huge thrust that the steel connecting rod tilts to be brought with braced structures to be installed, and form stable whole force structure system.
Yet,, therefore in the installation process, can produce strong constraint stress because the steel connecting rod is to adopt welding connecting mode.Be welded to connect if after two inclination strengthening concrete structures have been finished pouring concrete construction, directly carry out the steel connecting rod, then welding process invar connecting rod high temperature heat expansion, cooling are shunk and steel connecting rod two ends rigid structures are produced strong constraint stress, cause the profile steel concrete column of concrete structure bottom to produce structural crack, can not satisfy the structure Design requirement.If earlier to the steel connecting rod wherein the residing inclination strengthening concrete of end structural level carry out structure construction, and the described inclination strengthening concrete of other end structure wouldn't be constructed, treat that the installation of steel bar linkage structure, stress discharge the construction of carrying out other end structure afterwards again fully, then the coordination to engineering structures integral construction progress causes very big influence.
Summary of the invention
The objective of the invention is to characteristics at tilting strengthening concrete structure, a kind of job practices of releasing strong restraint stress of steel connecting rods of oblique and stiffened concrete structures is provided, the safety of the strengthening concrete structure of two ends rigidity is impacted to prevent or to reduce strong constraint stress that steel connecting rod when welding produce.
For achieving the above object, the present invention adopts following technical scheme:
The job practices of releasing strong restraint stress of steel connecting rods of oblique and stiffened concrete structures is between the top n layer of two inclination strengthening concrete structures the steel connecting rod to be set, and is made up of following steps:
A, to wherein the flooring and the beam of an inclination strengthening concrete structure n layer carry out pouring concrete construction; And another inclination strengthening concrete structure n layer needs and the steel connecting rod connects the corresponding setting in position wouldn't fluid concrete after the section of watering regional, and all the other floorings and beam are carried out pouring concrete construction;
B, between the n layer of two inclination strengthening concrete structures, carry out the installation of steel connecting rod;
C, treat that the steel connecting rod installs and cooling fully, fully discharge after the strong constraint stress, pouring concrete construction is carried out in the section of watering zone behind the n layer of another inclination strengthening concrete structure.
Further, the section of watering zone comprises after above-mentioned: need the n-1 layer post that be connected with steel connecting rod one end; The n layer side bar that need be connected with the steel connecting rod; Flooring from 1/3rd inside spans of n layer side bar; Be in this 1/3rd spans flooring and the girder and the secondary beam that are connected with n layer side bar.
As preferably, the shaped steel of above-mentioned n-1 layer post is provided with interim strenthening member.This interim strenthening member is two and is the i iron that " eight " font is arranged, an end of these two i iron is connected with the part that the shaped steel of this n-1 layer post is exposed to n floor face, and its other end then is connected with pre-embedded steel slab in n layer fluid concrete respectively.
The present invention is owing to adopt said method, by rationally stay establish after the construction technology in the section of watering zone, the strong constraint stress that the welding of steel connecting rod is produced is successfully discharged, making constructs satisfies Structural Design Requirement; Accelerate construction speed simultaneously, obtained remarkable economic efficiency and social benefit.
Description of drawings
Fig. 1 be of the present invention stay establish after the layout schematic diagram in the section of watering zone.
Fig. 2 is the C-C sectional drawing of Fig. 1.
Among the figure:
The 1-A building; The section of watering zone behind the 10-; 11-A building n floor face; 12-A building n floor side bar; 13-A building n floor girder; 14-A building n level beam; 15-A building n-1 floor stiffness post; 16-stiffness post shaped steel; 17-A building bean column node; The 2-B building; 21-B building n floor face; 22-B building n floor side bar; 23-B building bean column node; 24-B building n-1 floor stiffness post; The universal hinge of 3-; 4-steel case beam.
Now in conjunction with the accompanying drawings and embodiments the present invention is described in further detail:
The specific embodiment
As depicted in figs. 1 and 2, A building 1 and B building 2 are two buildings with inclination strengthening concrete structure, need between the top n layer of two inclination strengthening concrete structures the steel connecting rod to be set.Concrete job practices is as follows:
A, at first flooring 21 and the beam (comprising girder, secondary beam and side bar 22) to B building 2 n floor carries out pouring concrete construction.Pouring concrete construction wouldn't be carried out in the section of watering zone 10 after A building 1 n floor is provided with, after this section of watering regional 10 comprise the n-1 layer stiffness post 15 that is connected with steel connecting rod one end, n layer side bar 12, from the flooring 11 of 1/3rd inside spans of n layer side bar 12, be in this 1/3rd spans flooring and the girder 13 and the secondary beam 14 that are connected with n layer side bar 12.All the other floorings and beam to the n layer carry out pouring concrete construction.For prevent in the steel connecting rod installation process to after n-1 layer stiffness post in the section of the watering zone impact with the stability of shaped steel 16, need be provided with interim strenthening member to this stiffness post.This interim strenthening member is two and is the i iron that " eight " font is arranged, one end of these two i iron is connected with the part that the shaped steel 16 of this n-1 layer post is exposed to n floor face, its other end then respectively with pour into a mould n layer concrete floor 11 in pre-embedded steel slab be connected.
B, carry out steel connecting rod lifting installation: the universal hinge 3 with the connecting rod two ends is welded to connect with connecting rod two ends bean column node 17 respectively earlier, and the steel case beam 4 with the connecting rod mid portion is welded to connect with universal hinge 3 again.
C, treat that the steel bar linkage structure installs and cooling fully, fully discharge after the strong constraint stress, the section of watering behind the A building n floor regional 10 is carried out pouring concrete construction.
So, can when finishing the installation of steel connecting rod smoothly, successfully discharge the strong constraint stress that tapping connecting rod welding process produces, avoid the composite steel concrete column of inclination strengthening concrete structure bottom is impacted, satisfy the structure designing requirement, and can guarantee construction speed.
Claims (4)
1. the job practices of releasing strong restraint stress of steel connecting rods of oblique and stiffened concrete structures is between the top n layer of two inclination strengthening concrete structures the steel connecting rod to be set, and it is characterized in that, is made up of following steps:
A, to wherein the flooring and the beam of an inclination strengthening concrete structure n layer carry out pouring concrete construction; And another inclination strengthening concrete structure n layer needs and the steel connecting rod connects the corresponding setting in position wouldn't fluid concrete after the section of watering regional, and all the other floorings and beam are carried out pouring concrete construction;
B, between the n layer of two inclination strengthening concrete structures, carry out the installation of steel connecting rod;
C, treat that the steel connecting rod installs and cooling fully, fully discharge after the strong constraint stress, pouring concrete construction is carried out in the section of watering zone behind the n layer of another inclination strengthening concrete structure.
2. job practices according to claim 1 is characterized in that, described after the section of watering zone comprise:
The n-1 layer post that need be connected with steel connecting rod one end;
The n layer side bar that need be connected with the steel connecting rod;
Flooring from 1/3rd inside spans of n layer side bar;
Be in this 1/3rd spans flooring and the girder and the secondary beam that are connected with n layer side bar.
3. job practices according to claim 2 is characterized in that the shaped steel of described n-1 layer post is provided with interim strenthening member.
4. job practices according to claim 3, it is characterized in that, described interim strenthening member is two and is the i iron that " eight " font is arranged, one end of these two i iron is connected with the part that the shaped steel of this n-1 layer post is exposed to n floor face, and its other end then is connected with pre-embedded steel slab in n layer fluid concrete respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101141418A CN101881082B (en) | 2010-02-10 | 2010-02-10 | Construction method for releasing strong restraint stress of steel connecting rods of oblique and stiffened concrete structures |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101141418A CN101881082B (en) | 2010-02-10 | 2010-02-10 | Construction method for releasing strong restraint stress of steel connecting rods of oblique and stiffened concrete structures |
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| CN101881082A CN101881082A (en) | 2010-11-10 |
| CN101881082B true CN101881082B (en) | 2011-11-30 |
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| CN107152078B (en) * | 2017-06-29 | 2023-04-07 | 中国建筑第二工程局有限公司 | Hinge device and construction method for releasing welding internal stress of steel gallery by using hinge device |
Citations (2)
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|---|---|---|---|---|
| CN101397844A (en) * | 2008-09-25 | 2009-04-01 | 陕西省第三建筑工程公司 | Construction method of special section steel concrete composite structure inclined wall mould base engineering |
| CN101457559A (en) * | 2008-12-19 | 2009-06-17 | 北京工业大学 | Steel truss-steel plate-concrete combined shear wall and method for producing the same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0754361A (en) * | 1993-08-19 | 1995-02-28 | Shinwa:Kk | Construction method of wall for slope face, building, or the like, and built-up reinforcement used therefor |
| JPH11343609A (en) * | 1998-06-01 | 1999-12-14 | Taisei Corp | Backstay |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101397844A (en) * | 2008-09-25 | 2009-04-01 | 陕西省第三建筑工程公司 | Construction method of special section steel concrete composite structure inclined wall mould base engineering |
| CN101457559A (en) * | 2008-12-19 | 2009-06-17 | 北京工业大学 | Steel truss-steel plate-concrete combined shear wall and method for producing the same |
Non-Patent Citations (5)
| Title |
|---|
| JP特开平11-343609A 1999.12.14 |
| JP特开平7-54361A 1995.02.28 |
| 汪大绥, 姜文伟, 包联进等.CCTV新台址主楼施工模拟分析及应用研究.《建筑结构学报》.2008,第29卷(第3期), * |
| 汪大绥, 姜文伟, 包联进等.CCTV新台址主楼结构设计与思考.《建筑结构学报》.2008,第29卷(第3期), * |
| 谢夫海.凯恒中心型钢混凝土施工技术.《建筑技术》.2010,第41卷(第1期), * |
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Address after: 510075, Guangdong, Guangzhou Yuexiu District Ring East Road, No. 476, 10-17 layers Patentee after: Guangzhou Pearl River Construction Development Co., Ltd Address before: 11, No. 476, No. 510075 East Ring Road, Guangzhou, Guangdong Patentee before: GUANGZHOU RESIDENTIAL CONSTRUCTION DEVELOPMENT Co.,Ltd. |
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