CN107178090A - Super high-rise dwelling house engineering 3.3m raft foundation construction control methods - Google Patents
Super high-rise dwelling house engineering 3.3m raft foundation construction control methods Download PDFInfo
- Publication number
- CN107178090A CN107178090A CN201710381906.6A CN201710381906A CN107178090A CN 107178090 A CN107178090 A CN 107178090A CN 201710381906 A CN201710381906 A CN 201710381906A CN 107178090 A CN107178090 A CN 107178090A
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- concrete
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- covering
- temperature
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/01—Flat foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
Abstract
The invention discloses a kind of Super high-rise dwelling house engineering 3.3m raft foundation construction control methods, including the step such as preparation, concrete placings construction before concrete placings.Easy construction of the present invention, effect are good.Be conducive to improving globality, the impermeability of structure, while improving the shock resistance of structure.
Description
Technical field
The present invention relates to a kind of Super high-rise dwelling house engineering 3.3m raft foundation construction control methods.
Background technology
Prevention of mass concrete will produce higher heat of hydration temperature rise, formed uneven unstable in the presence of hydration heat of cement
Temperature field, produces temperature deformation heterogeneous, and temperature deformation will produce larger temperature under substructure and the constraint of itself
Stress is spent, easily causes concrete to ftracture.Sole plate is the load-carrying members of bed rearrangement main building, once cracking, not only influences the peace of mansion
Entirely, bottom plate infiltration can also influence normal use and the durability of mansion.
The content of the invention
It is an object of the invention to provide the good Super high-rise dwelling house engineering 3.3m raft foundations of a kind of easy construction, effect
Construction control method.
The present invention technical solution be：
A kind of Super high-rise dwelling house engineering 3.3m raft foundation construction control methods, it is characterized in that：Comprise the following steps：
（One）Prepare before concrete placings
（1）In Mass Concrete Construction first half of the month, the reserve status of inspection concrete supplier raw material, cement, additive, admixture
The deliverability of supplier, and to cement, additive carry out approved sample processing, with ensure prevention of mass concrete raw material timely supply and
Quality requirement；
（2）Two generating sets are equipped with, are had a power failure to prevent outer net；
（3）Machinery, vehicle are equipped with
Six concrete transfer pumps are equipped with, wherein one is standby, concrete pump truck maximum concrete output quantity 50m per hour3；
（4）Maintenance covering material is transported to standby near foundation ditch, it is ensured that sufficiently maintained or protected in concrete condensation, maintenance processes
Temperature work；
（Two）Concrete placings are constructed
（1）Pouring construction process flow
Arrangement concrete automotive pump → concrete is supplied, and → manage → pouring concrete → and vibrate → cycle operation → concrete for examination by start, pumping mortar, profit
Surface catch up with for the first time it is flat, smear pressure → concrete surface second and catch up with flat, compacting, check early-age shrinkage cracking for the third time again before troweling → final set
Smear pressure concrete surface → timely covering and heat insulating moisture-keeping maintaining → concrete temperature detection monitoring；
（2）Casting method
Concrete placings since lower, are successively risen using inclined plane delamination method；Inclined-plane is trickled naturally by pumping concrete to be formed, slope control
1：8 or so, work of vibrating gradually is moved up since the bottom of LIFT, to ensure the construction quality being layered between concrete；
Concrete slightly twitches vibrating head in process of vibrating up and down, make above and below concrete vibration it is uniform, each vibrating time with 20~
, no longer there is bubble by concrete surface, glows mortar and be defined in 30s；To make concrete vibration compacting, every concrete pumps out material mouth outfit 5 and shaken
Tamper, 4 work, 1 standby, point three roads arrangement.It is arranged in discharge point first, concrete is formed the nature trickling gradient, second
Road is arranged at toe, it is ensured that concrete bottom is closely knit, and the 3rd road is arranged in the middle part of inclined-plane, and each point will strictly control to vibrate on inclined-plane
Time, displacement and insertion depth；
（3）Bleeding processing
According to construction flowing water in construction, most of bleeding is discharged in catch pit and elevator pit, then fallen with immersible pump pump drainage, office
The a small amount of bleeding in portion is handled using sponge absorption；
（4）Surface anti-crack construction
Because mass pumping concrete wash cement starches thicker, therefore it must be used after pouring end before initial set, to close the receipts water crack of concrete
Seam, concrete surface treatment is had the final say by face absolute altitude with instrument first to be compacted, and long floating rule strikes off；Its is secondary to enter line number before initial set with nip drum
All over rolling and rolling；Finally before final set, the early-age shrinkage situation of concrete, wooden crab polishing compacting, leveling, to close concrete receipts are reexamined
Water crack is stitched, and is received slurry solidification construction period in concrete, and the face that receipts slurry work is completed must synchronously cover surface maintenance protective layer in time；
（5）Concrete curing
Concrete is being poured within the 12h after finishing, and is covered and moisture-keeping maintaining of sprinkling water, and maintenance covering adds one layer of 50mm using thin film
The maintenance mode of styrofoam, according to colorful cloth of the thermometric situation with foot closing, accomplishes to take off in time and covers, it is desirable to which the overlap joint of colorful cloth is not
Small space between 150mm, wall column joint bar must be less than and must be particularly noted that Insulation, be subject to strip film after covering, then
It is capped insulation quilt, it is ensured that the heat insulation work at wall column joint bar weak link；
（6）The thermometric work of concrete
After prevention of mass concrete is poured, it is necessary to be monitored concrete surface temperature and structure centre temperature, to take corresponding measure, control
The internal-external temperature difference and cooling rate of concrete placings block, prevent concrete from harmful thermal cracking occur；
Strict control concrete internal-external temperature difference, concrete surface temperature and ambient temperature differences not should be greater than 25 degree, and cooling rate is not more than 1.5
Degree/day；When internal-external temperature difference is more than or equal to 25 DEG C, concrete surface is further added by covering or increases the thickness of retaining；Now, should be close
Note determine temperature, the measure newly taken it is ensured that the temperature difference control within 25 DEG C, when internal-external temperature difference be less than 20 DEG C when, should be gradually
Covering material is removed, treats that it radiates.
Easy construction of the present invention, effect are good.Be conducive to improving globality, the impermeability of structure, while improving structure
Shock resistance.
With reference to embodiment, the invention will be further described.
Embodiment
A kind of Super high-rise dwelling house engineering 3.3m raft foundation construction control methods, comprise the following steps：
（One）Prepare before concrete placings
（1）In Mass Concrete Construction first half of the month, the reserve status of inspection concrete supplier raw material, cement, additive, admixture
The deliverability of supplier, and to cement, additive carry out approved sample processing, with ensure prevention of mass concrete raw material timely supply and
Quality requirement；
（2）Two generating sets are equipped with, are had a power failure to prevent outer net；
（3）Machinery, vehicle are equipped with
Six concrete transfer pumps are equipped with, wherein one is standby, concrete pump truck maximum concrete output quantity 50m per hour3；
（4）Maintenance covering material is transported to standby near foundation ditch, it is ensured that sufficiently maintained or protected in concrete condensation, maintenance processes
Temperature work；
（Two）Concrete placings are constructed
（1）Pouring construction process flow
Arrangement concrete automotive pump → concrete is supplied, and → manage → pouring concrete → and vibrate → cycle operation → concrete for examination by start, pumping mortar, profit
Surface catch up with for the first time it is flat, smear pressure → concrete surface second and catch up with flat, compacting, check early-age shrinkage cracking for the third time again before troweling → final set
Smear pressure concrete surface → timely covering and heat insulating moisture-keeping maintaining → concrete temperature detection monitoring；
（2）Casting method
Concrete placings since lower, are successively risen using inclined plane delamination method；Inclined-plane is trickled naturally by pumping concrete to be formed, slope control
1：8 or so, work of vibrating gradually is moved up since the bottom of LIFT, to ensure the construction quality being layered between concrete；
Concrete slightly twitches vibrating head in process of vibrating up and down, make above and below concrete vibration it is uniform, each vibrating time with 20~
, no longer there is bubble by concrete surface, glows mortar and be defined in 30s；To make concrete vibration compacting, every concrete pumps out material mouth outfit 5 and shaken
Tamper, 4 work, 1 standby, point three roads arrangement.It is arranged in discharge point first, concrete is formed the nature trickling gradient, second
Road is arranged at toe, it is ensured that concrete bottom is closely knit, and the 3rd road is arranged in the middle part of inclined-plane, and each point will strictly control to vibrate on inclined-plane
Time, displacement and insertion depth；
（3）Bleeding processing
According to construction flowing water in construction, most of bleeding is discharged in catch pit and elevator pit, then fallen with immersible pump pump drainage, office
The a small amount of bleeding in portion is handled using sponge absorption；
（4）Surface anti-crack construction
Because mass pumping concrete wash cement starches thicker, therefore it must be used after pouring end before initial set, to close the receipts water crack of concrete
Seam, concrete surface treatment is had the final say by face absolute altitude with instrument first to be compacted, and long floating rule strikes off；Its is secondary to enter line number before initial set with nip drum
All over rolling and rolling；Finally before final set, the early-age shrinkage situation of concrete, wooden crab polishing compacting, leveling, to close concrete receipts are reexamined
Water crack is stitched, and is received slurry solidification construction period in concrete, and the face that receipts slurry work is completed must synchronously cover surface maintenance protective layer in time；
（5）Concrete curing
Concrete is being poured within the 12h after finishing, and is covered and moisture-keeping maintaining of sprinkling water, and maintenance covering adds one layer of 50mm using thin film
The maintenance mode of styrofoam, according to colorful cloth of the thermometric situation with foot closing, accomplishes to take off in time and covers, it is desirable to which the overlap joint of colorful cloth is not
Small space between 150mm, wall column joint bar must be less than and must be particularly noted that Insulation, be subject to strip film after covering, then
It is capped insulation quilt, it is ensured that the heat insulation work at wall column joint bar weak link；
（6）The thermometric work of concrete
After prevention of mass concrete is poured, it is necessary to be monitored concrete surface temperature and structure centre temperature, to take corresponding measure, control
The internal-external temperature difference and cooling rate of concrete placings block, prevent concrete from harmful thermal cracking occur；
Strict control concrete internal-external temperature difference, concrete surface temperature and ambient temperature differences not should be greater than 25 degree, and cooling rate is not more than 1.5
Degree/day；When internal-external temperature difference is more than or equal to 25 DEG C, concrete surface is further added by covering or increases the thickness of retaining；Now, should be close
Note determine temperature, the measure newly taken it is ensured that the temperature difference control within 25 DEG C, when internal-external temperature difference be less than 20 DEG C when, should be gradually
Covering material is removed, treats that it radiates.
Claims (1)
1. a kind of Super high-rise dwelling house engineering 3.3m raft foundation construction control methods, it is characterized in that：Comprise the following steps：
（One）Prepare before concrete placings
（1）In Mass Concrete Construction first half of the month, the reserve status of inspection concrete supplier raw material, cement, additive, admixture
The deliverability of supplier, and to cement, additive carry out approved sample processing, with ensure prevention of mass concrete raw material timely supply and
Quality requirement；
（2）Two generating sets are equipped with, are had a power failure to prevent outer net；
（3）Machinery, vehicle are equipped with
Six concrete transfer pumps are equipped with, wherein one is standby, concrete pump truck maximum concrete output quantity 50m per hour3；
（4）Maintenance covering material is transported to standby near foundation ditch, it is ensured that sufficiently maintained or protected in concrete condensation, maintenance processes
Temperature work；
（Two）Concrete placings are constructed
（1）Pouring construction process flow
Arrangement concrete automotive pump → concrete is supplied, and → manage → pouring concrete → and vibrate → cycle operation → concrete for examination by start, pumping mortar, profit
Surface catch up with for the first time it is flat, smear pressure → concrete surface second and catch up with flat, compacting, check early-age shrinkage cracking for the third time again before troweling → final set
Smear pressure concrete surface → timely covering and heat insulating moisture-keeping maintaining → concrete temperature detection monitoring；
（2）Casting method
Concrete placings since lower, are successively risen using inclined plane delamination method；Inclined-plane is trickled naturally by pumping concrete to be formed, slope control
1：8 or so, work of vibrating gradually is moved up since the bottom of LIFT, to ensure the construction quality being layered between concrete；
Concrete slightly twitches vibrating head in process of vibrating up and down, make above and below concrete vibration it is uniform, each vibrating time with 20~
, no longer there is bubble by concrete surface, glows mortar and be defined in 30s；To make concrete vibration compacting, every concrete pumps out material mouth outfit 5 and shaken
Tamper, 4 work, 1 standby, point three roads arrangement；It is arranged in discharge point first, concrete is formed the nature trickling gradient, second
Road is arranged at toe, it is ensured that concrete bottom is closely knit, and the 3rd road is arranged in the middle part of inclined-plane, and each point will strictly control to vibrate on inclined-plane
Time, displacement and insertion depth；
（3）Bleeding processing
According to construction flowing water in construction, most of bleeding is discharged in catch pit and elevator pit, then fallen with immersible pump pump drainage, office
The a small amount of bleeding in portion is handled using sponge absorption；
（4）Surface anti-crack construction
Because mass pumping concrete wash cement starches thicker, therefore it must be used after pouring end before initial set, to close the receipts water crack of concrete
Seam, concrete surface treatment is had the final say by face absolute altitude with instrument first to be compacted, and long floating rule strikes off；Its is secondary to enter line number before initial set with nip drum
All over rolling and rolling；Finally before final set, the early-age shrinkage situation of concrete, wooden crab polishing compacting, leveling, to close concrete receipts are reexamined
Water crack is stitched, and is received slurry solidification construction period in concrete, and the face that receipts slurry work is completed must synchronously cover surface maintenance protective layer in time；
（5）Concrete curing
Concrete is being poured within the 12h after finishing, and is covered and moisture-keeping maintaining of sprinkling water, and maintenance covering adds one layer of 50mm using thin film
The maintenance mode of styrofoam, according to colorful cloth of the thermometric situation with foot closing, accomplishes to take off in time and covers, it is desirable to which the overlap joint of colorful cloth is not
Small space between 150mm, wall column joint bar must be less than and must be particularly noted that Insulation, be subject to strip film after covering, then
It is capped insulation quilt, it is ensured that the heat insulation work at wall column joint bar weak link；
（6）The thermometric work of concrete
After prevention of mass concrete is poured, it is necessary to be monitored concrete surface temperature and structure centre temperature, to take corresponding measure, control
The internal-external temperature difference and cooling rate of concrete placings block, prevent concrete from harmful thermal cracking occur；
Strict control concrete internal-external temperature difference, concrete surface temperature and ambient temperature differences not should be greater than 25 degree, and cooling rate is not more than 1.5
Degree/day；When internal-external temperature difference is more than or equal to 25 DEG C, concrete surface is further added by covering or increases the thickness of retaining；Now, should be close
Note determine temperature, the measure newly taken it is ensured that the temperature difference control within 25 DEG C, when internal-external temperature difference be less than 20 DEG C when, should be gradually
Covering material is removed, treats that it radiates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710381906.6A CN107178090A (en) | 2017-05-26 | 2017-05-26 | Super high-rise dwelling house engineering 3.3m raft foundation construction control methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710381906.6A CN107178090A (en) | 2017-05-26 | 2017-05-26 | Super high-rise dwelling house engineering 3.3m raft foundation construction control methods |
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| CN107178090A true CN107178090A (en) | 2017-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710381906.6A Pending CN107178090A (en) | 2017-05-26 | 2017-05-26 | Super high-rise dwelling house engineering 3.3m raft foundation construction control methods |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018214144A1 (en) * | 2017-05-26 | 2018-11-29 | 南通八建集团有限公司 | Construction control method for 3.3 m thick raft foundation for super high-rise housing project |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073240A (en) * | 2013-01-22 | 2013-05-01 | 中建三局第一建设工程有限责任公司广西分公司 | Large-volume concrete beneficial for controlling temperature and shrinkage crack and construction process thereof |
| CN104018673A (en) * | 2013-09-12 | 2014-09-03 | 江苏绘天建筑安装工程有限公司 | Extra-huge-volume concrete one-time continuous pouring multi-cycle real-time temperature control construction technology |
| CN105821895A (en) * | 2016-03-25 | 2016-08-03 | 中国五冶集团有限公司 | Raft board foundation steel reinforcement support frame water-proof treatment construction process |
-
2017
- 2017-05-26 CN CN201710381906.6A patent/CN107178090A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073240A (en) * | 2013-01-22 | 2013-05-01 | 中建三局第一建设工程有限责任公司广西分公司 | Large-volume concrete beneficial for controlling temperature and shrinkage crack and construction process thereof |
| CN104018673A (en) * | 2013-09-12 | 2014-09-03 | 江苏绘天建筑安装工程有限公司 | Extra-huge-volume concrete one-time continuous pouring multi-cycle real-time temperature control construction technology |
| CN105821895A (en) * | 2016-03-25 | 2016-08-03 | 中国五冶集团有限公司 | Raft board foundation steel reinforcement support frame water-proof treatment construction process |
Non-Patent Citations (4)
| Title |
|---|
| 刘开强等: "筏板基础的优化设计", 《四川建筑科学研究》 * |
| 李方刚等: "超高层建筑大体积混凝土施工技术及质量控制", 《施工技术》 * |
| 王媛等: "北京Z15地块超高层建筑桩筏基础的数值分析", 《建筑结构》 * |
| 葛超: "筏基大体积混凝土温度裂缝控制的研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018214144A1 (en) * | 2017-05-26 | 2018-11-29 | 南通八建集团有限公司 | Construction control method for 3.3 m thick raft foundation for super high-rise housing project |
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Application publication date: 20170919 |