CN104018701A - Method for controlling super-long reinforced concrete pool wall structure crack - Google Patents
Method for controlling super-long reinforced concrete pool wall structure crack Download PDFInfo
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- CN104018701A CN104018701A CN201410219885.4A CN201410219885A CN104018701A CN 104018701 A CN104018701 A CN 104018701A CN 201410219885 A CN201410219885 A CN 201410219885A CN 104018701 A CN104018701 A CN 104018701A
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Abstract
The invention relates to a method for controlling a super-long reinforced concrete pool wall structure crack. The method comprises the following steps that firstly, a cross-shaped steel plate is manufactured, wherein the steel plate with the thickness being 3 mm is cut into a long-strip-shaped steel strip with the width being 300 mm, the two sides of the steel strip are provided with wing plates in a welding mode, the two wing plates are linearly arranged, the wing plates are located in the middle of the steel strip and are perpendicular to the steel strip, the length of the lap of the two wing plates is not smaller than 50 mm, the two ends of the wing plates are fully welded, and the height of weld beads is larger than or equal to the thickness of the steel plate; secondly, axis positioning is carried out; thirdly, the cross-shaped steel plate is fixed, the cross-shaped steel plate in the first step is vertically installed, the ends of the wing plates and a main rib of a pool wall are welded, cross-shaped steel plates are arranged on the main rib of the pool wall in the length direction every 15-20 meters; fourthly, a reinforced concrete structure is poured and smashed. According to the method, blocking is changed into dredging, the thought is changed, and the leakage of the concrete of the pool wall of a main body is controlled in the aspect of releasing the concrete tensile stress.
Description
Technical field
The present invention relates to a kind of overlength reinforcing steel bar concrete pool wall construction method for controlling crack, be applicable to swimming pool, treatment tank etc. and can not establish ater-casting-shrinkage joint and the high cast-in-situ reinforced concrete structure of main body waterproof requirement.
Background technology
Along with the fast development of urban construction, city function is gradually improved, a large amount of constructions of stadiums, and the appearance of the overlength pool wall structures such as swimming pool, diving pool, has highlighted the importance of its structurally waterproof.Pool wall agent structure has all adopted the reinforced concrete structural system of integral cast-in-situ substantially, and the advantage of this structure is that structural entity rigidity is large, and construction technology equipment Requirement is not high, and speed of application is fast, and construction cost is low.Long 50 meters of general standard swimming pool, but according to " Code for design of concrete structures " requirement (GB5010-2010), for overlength concrete structure as above, in carrying out structure design and constructing, longitudinally the length segmentation of structure is set up " shrinkage joint ", and " shrinkage joint " spacing should not be greater than 30m～20m for wall structural system., due to the requirement that building structure is used in function and structure is processed, do not allow again to adopt vertical structure length segmentation and establish the measure that seam disconnects, just form super-long structural.And " Code for design of concrete structures " (GB5010-2010) explicitly calls for and must carry out the designing and calculating of super-long structural adjection and carry out the processing of " Crack Control " technical measures, the generation in crack in case thematic structure ftractures.
Overlength concrete structure is different from the design and construction of general structure, and its feature is, must take into full account the larger impact of vertical structure concrete autogenous shrinkage distortion, and it will cause vertical structure will increase successively along the displacement at long each position.Due to this distortion larger restriction of structure lateral deformation stiffness that will be subject to being connected, thereby can produce larger restrained force effect in each region of interest of super-long structural.Inevitably cause wall vertical crack to produce.
The Construction practices of the inventor of our company by for many years, in conjunction with code requirement, developed overlength reinforcing steel bar concrete pool wall construction method for controlling crack, and the present invention proposes thus.
Summary of the invention
For the above-mentioned technical problem of prior art, the object of this invention is to provide a kind of overlength reinforcing steel bar concrete pool wall construction method for controlling crack, this control method changes blocks up as dredging, and changes thinking and sets about from the angle of " release " concrete tensile stress, the generation of control subject pool wall concrete seepage.
For achieving the above object, the present invention is achieved by the following technical solutions:
A kind of overlength reinforcing steel bar concrete pool wall construction method for controlling crack comprises the steps:
(1) make cross steel plate: 3mm steel sheet and plate is cut into the steel bar of the wide strip of 300mm, the both sides of the described steel bar wing plate of all burn-oning, two described wing plates are straight line; Described wing plate is positioned at the centre position of steel bar and vertical with steel bar; The lap length of two described wing plates is not less than 50mm, the equal full weld in two ends of wing plate, and weld bead height is more than or equal to steel plate thickness;
(2) axis location: determine the installation site of cross steel plate on axis direction, guarantee the main muscle welding of cross steel plate and pool wall;
(3) fixed cross shape steel plate: the cross steel plate in step (1) is vertically installed, and wing plate end and the main muscle welding of pool wall; The main muscle of described pool wall is established cross steel plate one every 15-20 rice in the longitudinal direction;
(4) water and smash reinforced concrete structure: described in water while smashing steel bar concrete, the cloth concrete simultaneously in the both sides of steel bar.
In described step (1), welding rod is knot 420 structural steel electrodes, and carries out test weld before welding.
In described step (3), after the horizontal absolute altitude of cross steel plate is determined, be with elongated line cross steel plate is suitable for reading.
After described cross steel plate installs, prop up with several steel bar ends, described steel bar end height alternately arranges, and spacing between steel bar end is not more than 600mm.
Beneficial effect of the present invention is as follows:
Overlength reinforcing steel bar concrete pool wall construction method for controlling crack of the present invention, utilize cross steel plate that the concrete between body of wall " kernel " inside and outside wall steel mesh reinforcement is vertically cut apart at a certain distance along wall, the segmentation of body of wall concrete is shunk, change the multiple technologies measure that engineering circles adopts the thinking of " control " to take in the past, change and block up as dredging, change thinking and adopt the angle of " release " concrete tensile stress to set about, the generation of control subject pool wall concrete seepage.The present invention only need process to the local cracks at dividing joint place shrink cracks, save construction cost 82%, and the reduction of erection time, it is the very economic and overlength reinforced concrete structure method for controlling crack effectively of one, can be used for swimming pool, treatment tank etc. and can not establish ater-casting-shrinkage joint and the high cast-in-situ reinforced concrete structure of main body waterproof requirement, there is larger economic benefit and social benefit.
Brief description of the drawings
Fig. 1 is the structural representation after cross steel plate of the present invention is installed;
Wherein, 1 is that the main muscle of pool wall, 2 is that steel bar, 3 is wing plate.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to this.
As shown in Figure 1, overlength reinforcing steel bar concrete pool wall construction method for controlling crack of the present invention comprises the steps:
(1) make cross steel plate: 3mm steel sheet and plate is cut into the steel bar 2 of the wide strip of 300mm, the both sides of steel bar 23, two wing plates 3 of wing plate of all burn-oning are straight line; Wing plate 3 is positioned at the centre position of steel bar 2 and vertical with steel bar 2; The lap length of two wing plates 3 is not less than 50mm, the equal full weld in two ends of wing plate 3, and weld bead height is more than or equal to steel plate thickness, welding rod is knot 420 structural steel electrodes, and before welding, carry out test weld, debugged current parameters, the excessive easy burn of electric current even burns steel plate; The too small starting the arc difficulty of electric current, not prison welding is solid.The weld ripples of weld seam should be even, the defect such as must not have crack, slag inclusion, undercut, burn.
In the present invention, the length that cross steel plate should weld before installation as far as possible, to reduce the welding job after in place, because cross steel plate is vertical position welding after in place, welding difficulty is larger, must be by height one-shot forming;
(2) axis location: determine the installation site of cross steel plate on axis direction, guarantee that the main muscle 1 of cross steel plate and pool wall welds;
(3) fixed cross shape steel plate: the cross steel plate in step (1) is vertically installed, and wing plate 3 ends and the main muscle 1 of pool wall be welded and fixed, produce crimp while smashing or topple in case concrete waters; The main muscle 1 of pool wall is established cross steel plate one every 15-20 rice in the longitudinal direction; After the horizontal absolute altitude of cross steel plate is determined, be with elongated line cross steel plate is suitable for reading, to keep it suitable for reading straight;
(4) water and smash reinforced concrete structure: water while smashing steel bar concrete, in the time building concrete, because this place's cross steel plate is divided into two board wall concrete, should be at its both sides while cloth concrete, to make concrete side force balance in the time vibrating.And avoid vibrating head direct tamping cross steel plate and support fixed system, prevent cross steel plate deformed, affect stagnant water effect, ensure again concrete vibration compacting.
In step (3), after cross steel plate installs, in order to prevent rocking inside and outside it is in concrete board wall, prop up with several steel bar ends, steel bar end height alternately arranges, and spacing between steel bar end is not more than 600mm, in case cross steel plate deformed tilts.
Below for adopting the part engineering example of this engineering method:
Shaoxing County sports center natatorium and diving pool is positioned at Xincheng District, Shaoxing County, Shaoxin City, in planning sports center land used.Overall floorage is 38392.69m2, and wherein basement one deck building area 12765.42m2, F2/B2 building area 25627.27 m2 are provided with 50 meters of standard swimming lane swimming pools, diving pool, warm-up pond.Engineering adopts overlength reinforcing steel bar concrete pool wall construction method for controlling crack of the present invention.
Shaoxing scenery with hills and waters Hua Ting engineering is positioned at new district, The Mirror Lake, Shaoxing, approximately 60,000 square metres of overall floorages, and house amounts to 510 covers.In community, swimming pool adopts overlength reinforcing steel bar concrete pool wall construction method for controlling crack of the present invention, comes into operation more than 2 years, so far without any Seepage, is subject to Party A and owner's extensive favorable comment.
Overlength reinforcing steel bar concrete pool wall construction method for controlling crack of the present invention, utilize cross steel plate that the concrete between body of wall " kernel " inside and outside wall steel mesh reinforcement is vertically cut apart at a certain distance along wall, the segmentation of body of wall concrete is shunk, change the multiple technologies measure that engineering circles adopts the thinking of " control " to take in the past, change and block up as dredging, change thinking and adopt the angle of " release " concrete tensile stress to set about, the generation of control subject pool wall concrete seepage.The present invention only need process to the local cracks at dividing joint place shrink cracks, save construction cost 82%, and the reduction of erection time, it is the very economic and overlength reinforced concrete structure method for controlling crack effectively of one, can be used for swimming pool, treatment tank etc. and can not establish ater-casting-shrinkage joint and the high cast-in-situ reinforced concrete structure of main body waterproof requirement, there is larger economic benefit and social benefit.
Above-described embodiment is only for the inventive concept of the present invention of explaining, but not restriction to rights protection of the present invention, allly utilizes this design to carry out the change of unsubstantiality to the present invention, all should fall into protection scope of the present invention.
Claims (4)
1. an overlength reinforcing steel bar concrete pool wall construction method for controlling crack, is characterized in that comprising the steps:
(1) make cross steel plate: 3mm steel sheet and plate is cut into the steel bar of the wide strip of 300mm, the both sides of the described steel bar wing plate of all burn-oning, two described wing plates are straight line; Described wing plate is positioned at the centre position of steel bar and vertical with steel bar; The lap length of two described wing plates is not less than 50mm, the equal full weld in two ends of wing plate, and weld bead height is more than or equal to steel plate thickness;
(2) axis location: determine the installation site of cross steel plate on axis direction, guarantee the main muscle welding of cross steel plate and pool wall;
(3) fixed cross shape steel plate: the cross steel plate in step (1) is vertically installed, and wing plate end and the main muscle welding of pool wall; The main muscle of described pool wall is established cross steel plate one every 15-20 rice in the longitudinal direction;
(4) water and smash reinforced concrete structure: described in water while smashing steel bar concrete, the cloth concrete simultaneously in the both sides of steel bar.
2. overlength reinforcing steel bar concrete pool wall construction method for controlling crack as claimed in claim 1, is characterized in that: in described step (1), welding rod is knot 420 structural steel electrodes, and carries out test weld before welding.
3. overlength reinforcing steel bar concrete pool wall construction method for controlling crack as claimed in claim 2, is characterized in that: in described step (3), after the horizontal absolute altitude of cross steel plate is determined, be with elongated line cross steel plate is suitable for reading.
4. the overlength reinforcing steel bar concrete pool wall construction method for controlling crack as described in claim as arbitrary in claim 1-3, it is characterized in that: after described cross steel plate installs, prop up with several steel bar ends, described steel bar end height alternately arranges, and spacing between steel bar end is not more than 600mm.
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| CN201410219885.4A CN104018701A (en) | 2014-05-23 | 2014-05-23 | Method for controlling super-long reinforced concrete pool wall structure crack |
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| CN201410219885.4A CN104018701A (en) | 2014-05-23 | 2014-05-23 | Method for controlling super-long reinforced concrete pool wall structure crack |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703224A (en) * | 2017-01-05 | 2017-05-24 | 浙江大学建筑设计研究院有限公司 | Overlength concrete wall crack control design method based on hidden-type crack induction inserts |
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| JP2000129623A (en) * | 1998-10-26 | 2000-05-09 | Taisei Rotec Corp | Reinforcing method for crack in paving slab |
| CN101429764A (en) * | 2008-11-17 | 2009-05-13 | 天津三建建筑工程有限公司 | Infiltration water detection and plugging renovation devices and methods for underground continuous wall groove segment seam |
| JP2009185470A (en) * | 2008-02-04 | 2009-08-20 | Ohbayashi Corp | Construction method for placing joint section of underground wall, and underground wall |
| CN101608476A (en) * | 2009-07-07 | 2009-12-23 | 宁波建工股份有限公司 | Method for controlling crack of super-long wall body |
| CN102677899A (en) * | 2012-03-09 | 2012-09-19 | 中石油东北炼化工程有限公司吉林设计院 | Seamless structural method of overlong reinforced concrete pond |
| CN103510706A (en) * | 2012-07-27 | 2014-01-15 | 中国有色金属工业第六冶金建设有限公司 | Method for preventing fissures of large concrete pool |
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2014
- 2014-05-23 CN CN201410219885.4A patent/CN104018701A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000129623A (en) * | 1998-10-26 | 2000-05-09 | Taisei Rotec Corp | Reinforcing method for crack in paving slab |
| JP2009185470A (en) * | 2008-02-04 | 2009-08-20 | Ohbayashi Corp | Construction method for placing joint section of underground wall, and underground wall |
| CN101429764A (en) * | 2008-11-17 | 2009-05-13 | 天津三建建筑工程有限公司 | Infiltration water detection and plugging renovation devices and methods for underground continuous wall groove segment seam |
| CN101608476A (en) * | 2009-07-07 | 2009-12-23 | 宁波建工股份有限公司 | Method for controlling crack of super-long wall body |
| CN102677899A (en) * | 2012-03-09 | 2012-09-19 | 中石油东北炼化工程有限公司吉林设计院 | Seamless structural method of overlong reinforced concrete pond |
| CN103510706A (en) * | 2012-07-27 | 2014-01-15 | 中国有色金属工业第六冶金建设有限公司 | Method for preventing fissures of large concrete pool |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703224A (en) * | 2017-01-05 | 2017-05-24 | 浙江大学建筑设计研究院有限公司 | Overlength concrete wall crack control design method based on hidden-type crack induction inserts |
| CN106703224B (en) * | 2017-01-05 | 2022-05-24 | 浙江大学建筑设计研究院有限公司 | Crack control design method for overlong concrete wall by adopting hidden crack induction inserting plate |
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Application publication date: 20140903 |