CN103603312B - A kind of concrete dam ideal temperature control curve model and utilize its intelligent control method - Google Patents
A kind of concrete dam ideal temperature control curve model and utilize its intelligent control method Download PDFInfo
- Publication number
- CN103603312B CN103603312B CN201310524712.9A CN201310524712A CN103603312B CN 103603312 B CN103603312 B CN 103603312B CN 201310524712 A CN201310524712 A CN 201310524712A CN 103603312 B CN103603312 B CN 103603312B
- Authority
- CN
- China
- Prior art keywords
- temperature
- concrete
- cooling
- water
- water flowing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
This application discloses a kind of concrete dam ideal temperature control curve model, use Finite Element Simulation Analysis method, on the basis of existing specification and temperature control practical experience, study the temperature field of various dam type, the temperature stress regularity of distribution, obtain different parts by simulation calculation, concrete desirable temperature control curve model that different materials subregion, Various Seasonal are built, its middle ideal temperature control curve model temperature stress when equal Winkler's foundation is minimum。It addition, additionally provide the intelligent control method utilizing this concrete dam ideal temperature control curve model。
Description
Technical field
The invention belongs to the technical field of the xoncrete structure monitoring in Hydraulic and Hydro-Power Engineering and construction, more particularly to a kind of concrete dam ideal temperature control curve model, additionally provide the intelligent control method utilizing this model。
Background technology
Dam concrete construction phase crack problem is to fail to obtain one of effective difficult problem solved always, its main cause is except the construction condition factor impact of construction stage complexity, in work progress, the enforcement of a lot of temperature control measures is subject to the interference of anthropic factor unavoidably, and its actual anti-crack function falls flat also another important reason。The concrete dam in crack much occurs, is owing to internal temperature fails real to carry out cooling down or carrying out surface protection according to designing requirement so that the cracking resistance safety stock of construction time dam concrete is not, stress exceeds standard thus there is crack。
In conventional engineering practice, the control of water pipe cooling is mainly by manually completing, whether the quality that water flowing controls depends entirely on the experience of site administrator, owing to the water pipe of the internal water flowing simultaneously of dam is often hundreds and thousands of, rely solely on the water-filled pipe control that artificial mode goes reply so many, it is many that its result is difficult to avoid the occurrence of human error, temperature drop process off-design instructs the situation of curve, the greatest problem that this traditional water flowing control management mode is brought is exactly that water flowing cost is high, temperature drop process randomness is bigger, cracking risk is also often in a kind of uncontrolled state。Therefore, in existing theoretical research with engineering practice basis, making full use of the technological means in modern times, the intelligent water communication that research and development are relevant is analyzed software and controls equipment, reduce the interference of anthropic factor, it is achieved the Based Intelligent Control of inside concrete temperature drop overall process seems and is highly desirable to。
Summary of the invention
The technology of the present invention solves problem: overcome the deficiencies in the prior art, a kind of concrete dam ideal temperature control curve model is provided, different phase at temperature drop can promote that internal temperature is omnidistance as much as possible lowers the temperature along this model so that concrete cracking risk can whole-process control within allowed band。
The technical solution of the present invention is: this concrete dam ideal temperature control curve model, use Finite Element Simulation Analysis method, on the basis of existing specification and temperature control practical experience, study the temperature field of various dam type, the temperature stress regularity of distribution, obtain different parts by simulation calculation, concrete desirable temperature control curve model that different materials subregion, Various Seasonal are built, its middle ideal temperature control curve model temperature stress when equal Winkler's foundation is minimum。
Additionally provide the intelligent control method utilizing this concrete dam ideal temperature control curve model, according to this concrete dam ideal temperature control curve model, control the change procedure of temperature by adjusting the water flowing flow of construction time。
By this concrete dam ideal temperature control curve model, use Finite Element Simulation Analysis method, on the basis of existing specification and temperature control practical experience, study the temperature field of various dam type, the temperature stress regularity of distribution, calculate different parts, different materials subregion, the concrete desirable temperature control curve model that Various Seasonal is built, its middle ideal temperature control curve temperature stress when equal Winkler's foundation is minimum, so the different phase at temperature drop can promote internal temperature whole process as much as possible to lower the temperature along this model, make concrete cracking risk can whole-process control within allowed band。
Accompanying drawing explanation
Fig. 1 illustrates a preferred embodiment of the concrete dam ideal temperature control curve model according to the present invention。
Fig. 2 illustrates another preferred embodiment of the concrete dam ideal temperature control curve model according to the present invention。
Detailed description of the invention
This concrete dam ideal temperature control curve model, use Finite Element Simulation Analysis method, on the basis of existing specification and temperature control practical experience, study the temperature field of various dam type, the temperature stress regularity of distribution, obtain different parts by simulation calculation, concrete desirable temperature control curve model that different materials subregion, Various Seasonal are built, its middle ideal temperature control curve model temperature stress when equal Winkler's foundation is minimum。
Preferably, the determination of desirable temperature control curve includes the determination of maximum temperature and temperature drop rate, and wherein the determination of maximum temperature is relevant to the basis temperature difference, and the basis temperature difference is obtained by specification or finite element stimulation analysis；Wherein temperature drop rate is analyzed by finite element stimulation and is obtained, and is controlled according to internal-external temperature difference, upper and lower temperature difference and allowable stress。
Preferably, desirable temperature control curve includes a phase temperature control, phase cooling, cooling in mid-term and temperature control, second phase cooling, temperature control totally five stages second phase。
Additionally provide the intelligent control method utilizing this concrete dam ideal temperature control curve model, according to this concrete dam ideal temperature control curve model, control the change procedure of temperature by adjusting the water flowing flow of construction time。
By this concrete dam ideal temperature control curve model, use Finite Element Simulation Analysis method, on the basis of existing specification and temperature control practical experience, study the temperature field of various dam type, the temperature stress regularity of distribution, calculate different parts, different materials subregion, the concrete desirable temperature control curve model that Various Seasonal is built, its middle ideal temperature control curve temperature stress when equal Winkler's foundation is minimum, so the different phase at temperature drop can promote internal temperature whole process as much as possible to lower the temperature along this model, make concrete cracking risk can whole-process control within allowed band。
Preferably, the change procedure controlling temperature is divided into the next stage:
(1) placement temperature controls, if wherein outlet temperature is higher than design load, and ambient temperature is higher than outlet temperature, by strengthening surface heat preservation, and reduces concrete and mixes and stirs the temperature of front various composition dispensing to control placement temperature；If ambient temperature is lower than outlet temperature and design load, temperature when reducing concrete to face, storehouse by the mode dispelled the heat；
(2) placing temperature controls, and controls placing temperature by reducing the germinal layer cover time；
(3) the concrete cooling stage: in a phase temperature control, if there is the phenomenon that exceeds standard in placing temperature, the mode or the raising water flowing flow that adopt appropriateness reduction coolant water temperature are controlled, if placing temperature is lower than design load, then by postponing water flowing or adopting the mode of high water temperature and low discharge to be controlled；In phase cooling, control by reducing water flowing flow or raising coolant water temperature；In cooling in mid-term and temperature control, if mid-term, cooling started, concrete miss the mark temperature, then strengthen water flowing every day flow, if lower than cooling down starting temperature mid-term during concrete cooling in mid-term beginning, so reduce water flowing every day flow, if there is phenomenon of cutting off the water, then when again cooling down, cooler-water temperature first improves, then reducing coolant water temperature, flow adopts and is controlled by the little mode being gradually increased；In the second phase lowers the temperature, if second-stage cooling starts, concrete miss the mark temperature, so strengthen water flowing every day flow, if lower than second-stage cooling starting temperature when concrete second-stage cooling starts, then reduce water flowing every day flow, if there is phenomenon of cutting off the water, so again adopt during water flowing first low discharge more progressively the mode of enlargement discharge carry out, water temperature adopts the mode being gradually lowered to carry out；In second phase temperature control, adopt the mode reducing water flowing flow to carry out temperature control, and avoid water flowing mode off and on。
Detailed description below the preferred embodiment of the present invention。
(1) Controlling model of different dam type ideal temperature graphs and defining method
1) Control Cooling of different dam type ideal temperature graphs
So-called ideal temperature graph, refers to the temperature lowering curve that dam concrete is followed in cooling procedure, lowers the temperature according to this curve, the cracking risk that dam concrete causes due to variations in temperature is relatively minimal, and selected cooling scheme is relatively optimum。
It is said that in general, according to the type on dam and need both of these case with or without joint grouting, the type of ideal temperature graph mainly has following several:
(1) Compacted Concrete Gravity Dam Section: this dam type is generally without joint grouting, construction time only has the first period cooling, entered if desired before the winter or before water-retention for reducing dam concrete internal-external temperature difference, the region that dam body internal temperature is of a relatively high can be increased a cooling in mid-term, its cooling procedure is general as it is shown in figure 1, mainly include a phase temperature control, phase cooling and three phases of lowering the temperature mid-term。
(2) normal concrete gravity dam: this dam type generally sets longitudinal joint, seam grouting needs, a phase, mid-term and second phase it is divided into during concrete cooling, typical temperature drop curve is as in figure 2 it is shown, mainly include a phase temperature control, phase cooling, cooling in mid-term (likely containing temperature control in mid-term), second phase cooling and temperature control totally five stages second phase。
(3) rolled concrete arch dam required without sealing conditions: this dam type generally arranges attractive joint, generally there are the first period cooling and cooling in mid-term construction time, without mandatory second-stage cooling, often temperature is not yet as cold as closed arch temperature dam and starts water-retention, hereafter just freely lower the temperature, cooling procedure line is similar to shown in Fig. 1, mainly includes a phase temperature control, phase cooling and three phases of lowering the temperature mid-term。
(4) normal concrete arch dam and the rolled concrete arch dam having grouting to require: this dam type generally sets transverse joint, there are sealing conditions needs, concrete internal temperature need to be cooled to sealing conditions temperature, typical temperature drop curve is as in figure 2 it is shown, mainly include a phase temperature control, phase cooling, cooling in mid-term (likely containing temperature control in mid-term), second phase cooling and temperature control totally five stages second phase。
2) acquisition methods of ideal temperature graph
The acquisition of ideal temperature graph, general consideration mass concrete temperature Volume control, use Finite Element Simulation Analysis method, on the basis of existing specification and temperature control practical experience, study the temperature field of various dam type, the temperature stress regularity of distribution, it is proposed to the concrete ideal temperature controlling curve model that different parts, different materials subregion, Various Seasonal are built。Ideal temperature controlling curve has the advantages that when equal Winkler's foundation, temperature stress is minimum。
The determination of ideal temperature graph depends mainly on two key indexs: one is maximum temperature, and two is temperature drop rate。The basis temperature difference (difference of maximum temperature and equilibrium temperature) is depended in the determination of maximum temperature, and for any one dam, its final equilibrium temperature (or joint grouting temperature) is substantially fixing, and how the value of the basis temperature difference just determines maximum temperature。And the basis temperature difference generally can pass through specification, or finite element stimulation is analyzed both modes and is obtained。
Acquisition about temperature drop rate also obtains mainly by finite element stimulation analysis, it is controlled according to internal-external temperature difference, upper and lower temperature difference and 3 indexs of allowable stress simultaneously, the control standard of temperature drop rate need to consider according to dam concrete inside bulk temperature and stress distribution situation, the concrete that different dam types, different parts, different materials and Various Seasonal are built, its temperature drop rate all has each different requirements。
(2) concrete cooling process major effect and controlling factor analysis
For dam engineering, the mode that scene temperature controls has a lot, and affect temperature-fall period specifically include that several key factors such as hydrated reaction of cement (generally representing), water pipe arrangement form, coolant water temperature, water flowing flow, water pipe pressure reduction with adiabatic temperature rise formula。
In above-mentioned several factors, hydrated reaction of cement characteristic (adiabatic temperature rise) is usually metastable, and cooling water pipe is once after Transducers Embedded in Concrete, its arrangement form is without change, and therefore, the two factor substantially belongs to fixed factor；Water pipe pressure reduction also can be adjusted theoretically, this adjustability depends on the configuration power of refrigeration unit, generally, from reducing fault and improving the premise of unit durability, after deduction friction loss, pressure reduction generally keeps being relatively fixed, and the change of pressure reduction is not the change directly influencing temperature, its impact is to be embodied in the impact on flow, therefore adjusts water pipe pressure reduction, is the equal of regulate flow parameter；Coolant water temperature then, cooling different according to concrete engineering requires that difference has more selection, for the dam that general seamless grouting requires, such as RCCD, river is adopted to cool down sometimes, water temperature gentle seasonal effect randomness of being bullied is bigger, and not by manual control, walk along ideal process line if now wanting to control concrete temperature, then can only be controlled by adjustment water flowing flow；For the concrete dam that seam (or envelope arch) grouting requires, the water temperature of cooling unit is also usually and is relatively fixed, such as one cold temperature control stage was likely to essentially identical with the water temperature in two cold stages, adopted relatively low water temperature, and mid-term, coolant water temperature then adopted of a relatively high water temperature。
The above analysis, in the several factors affecting temperature drop process, most convenient, the most direct effective manner are through the water flowing flow adjusting the construction time to control the change procedure of temperature, and certainly, coolant water temperature also has the space of adjustment if desired。
(3) ideal temperature graph Based Intelligent Control measure and method stage by stage
Dam concrete construction scene boundary condition is extremely complex, the thermograph ideally obtained suffers from the impact of a lot of extrinsic factor behind job site, and how allowing concrete temperature change along ideal process line as much as possible is realize the key point that intelligent water communication controls。For this, this part content keypoint solves in Practical Project, for the problem being likely to occur in each phase temperature control process, it is proposed to appropriate counter-measure and method。
Control needs according to reality, Concrete temperature controlling process be divided into following several stages and be described:
(1) first stage: placement temperature controls
Concrete from mixing building out time temperature outlet temperature, transported to face, storehouse by belt feeder or cable machine, arrive during face, storehouse temperature placement temperature。In this process, concrete generally also will not start hydration reaction heat release, therefore, the change of concrete temperature mainly with outside air temperature heat exchange caused by, if ambient temperature is higher than concrete temperature, then will there is heat and pour in down a chimney phenomenon, concrete temperature can raise, otherwise, concrete warehousing temperature can reduce。The measure of this stage control variations in temperature is mainly surface protection; if outlet temperature is higher than design load; and ambient temperature is higher than outlet temperature; so avoid placement temperature to exceed standard too much only by reinforcement surface heat preservation, should take measures to reduce concrete as far as possible simultaneously and mix and stir the temperature of front various composition dispensing；If ambient temperature is relatively low, then temperature when can carry out appropriate reduction concrete to face, storehouse by the mode of dispel the heat (without surface protection), certainly, placement temperature should control within design allowed band as far as possible。
(2) second stage: placing temperature controls
Concrete transportation is to face, storehouse, until when being covered by upper layer concrete, specification specifies that the concrete temperature within from surface 5-10cm is referred to as placing temperature。Conventional engineering experience shows, placing temperature is bigger on the impact of concrete maximum temperature, being typically under the premise of water pipe cooling, placing temperature raises 1 DEG C, and maximum temperature can promote about 0.4-0.6 DEG C, therefore, if it is desired to allow concrete temperature along ideal temperature change in process, then, should as far as possible placing temperature also be controlled in the scope that design allows, otherwise, then need to adjust other temperature control measures to control。
Controlling the maximally effective way of placing temperature is reduce the germinal layer cover time, should carry out germinal layer surface protection when temperature is higher, increases the measure such as face, storehouse spraying if desired, pours in down a chimney phenomenon reducing heat；When temperature is too low, surface protection of carrying out that also should be suitable works, and to avoid temperature of concrete during construction too low phenomenon occur, otherwise actual temperature curve is also possible to deviation ideal process line。
(3) phase III: concrete cooling stage
The impact of three big factors it is limited mainly by inside this stage concrete, including: aquation temperature rise, surface radiating and water pipe cooling。
Aquation temperature rise is the characteristic that concrete is intrinsic, and when weather conditions difference is little, hydration reaction course and own temperature thereof have dependency, but in general, difference is not too large。The influence coefficient of temperature changing process is substantially certain by this factor；
The impact of temperature changing process is also such by surface radiating, mainly whether takes Insulation with its surface, adopts the thickness of insulation material and surface coefficient of heat transfer relevant, once it is determined that, then the weighing factor of temperature course is also determined by this factor substantially；
3rd key influence factor is water pipe cooling, and water pipe cooling effect is main and water flowing flow, and coolant water temperature is relevant with water pipe arrangement form。Above analyzing, concrete is once complete to build, then water pipe arrangement form is also substantially constant influence factor, it can be seen that, the control of concrete temperature drop process realizes mainly by change water flowing flow and coolant water temperature。
After concrete enters actual cooling stage, by two kinds of ideal process line it can be seen that the first period cooling includes several stages such as temperature control and two stages of lowering the temperature, cooling in the mid-term of additionally including (temperature control in mid-term), second phase cooling and second phase temperature control。For two kinds of ideal process, the Temperature Control Measures of same phase is substantially identical, therefore, below the main temperature control Measure choice for the 2nd class ideal temperature drop each stage of curve be analyzed。
1. a phase temperature control: temperature control stage main purpose is peak clipping so that inside concrete maximum temperature controls within design allowed band (or under maximum temperature value of ideal temperature curve)。In this stage, if there is the phenomenon that exceeds standard in placing temperature, must on the basis of the corresponding control measure of desirable temperature lowering curve and parameter thereof, by the adjustment of other measures or parameter is controlled maximum temperature as far as possible, the mode of appropriateness reduction coolant water temperature or raising water flowing flow now can be adopted to be controlled。It is said that in general, it is more more notable than the effect improving water flowing flow to reduce the coolant water temperature impact on maximum temperature, therefore, reducing coolant water temperature is relatively better select, if water temperature adjustment leeway is little, then two kinds of measures all need to consider。
If placing temperature is significantly lower than the situation of designing requirement, then can pass through suitably to postpone water flowing, or the mode adopting high water temperature and low discharge is controlled, owing to the adjustment of construction time water temperature is likely to be subject to refrigeration unit and system water needs, now should optimize the mode being considered as low discharge or delay water flowing and be controlled。
2. phase cooling: the purpose of concrete one phase cooling is to reduce internal temperature, reduces internal-external temperature difference, to avoid early-age concrete crack occur owing to internal-external temperature difference is relatively big。The control of this phase temperature process mainly can control by adopting to reduce water flowing flow or improve the mode of coolant water temperature, and specifically how selecting can according to on-the-spot practical situation and be determined in conjunction with Real-time Feedback analysis。
One phase cooling anomaly situation processes: the construction time is if there is after taking all possible preparation temperature control measures, temperature exceeding standard phenomenon still occurs, so it is accomplished by temperature drop rate is carried out the control of necessity, generally speaking, specification requiring, every day lowers the temperature less than 1 DEG C, according to engineering experience in recent years, every day, cooling generally can be controlled according to less than 0.5 DEG C/day, one cool time can appropriateness extend, until concrete crosses with ideal process line again, then it is controlled further along ideal process line。
3. cooling in mid-term: main purpose of lowering the temperature mid-term is to reduce internal-external temperature difference or reduce later stage two cold cooling extent, general cool time is longer, every day with reference to cooling extent can according to a cold target temperature with in the difference of cold target temperature be temporally interpolated acquisition, be usually no more than 0.3 DEG C/day。If mid-term, cooling started, concrete not yet reaches target temperature, then can suitably strengthen water flowing every day flow, can be controlled by less than 0.5 DEG C/day。If lower than cooling down starting temperature mid-term during concrete cooling in mid-term beginning, then flow can appropriateness reduce, and is such as controlled by the standard of 0.1-0.2 DEG C/day。It should be noted that, later stage concrete should avoid situation about cutting off the water to occur as far as possible, the cracking risk caused is hit with low temperature water-cooled after reducing water flowing again, if just in case phenomenon of cutting off the water occurs, when so again cooling down, cooler-water temperature should be suitably high, then slowly reduces coolant water temperature, and flow also should adopt and is controlled by the little mode being gradually increased。
4. second phase cooling (post drop): post drop main purpose is to allow concrete cooling to closed arch temperature, owing to concrete cooling later stage stress is bigger, therefore, temperature drop rate should not be too high, every day with reference to cooling extent can according to a cold target temperature with in the difference of cold target temperature be temporally interpolated acquisition, be usually no more than 0.3 DEG C/day。If second-stage cooling starts, concrete not yet reaches target temperature, then can suitably strengthen water flowing every day flow, can be controlled by less than 0.5 DEG C/day。
If lower than second-stage cooling starting temperature (mid-term cools down target temperature) when concrete second-stage cooling starts, then flow can appropriateness reduce, and is such as controlled by not higher than 0.2 DEG C/day。
Second phase is lowered the temperature, the situation of water flowing off and on must be avoided the occurrence of as far as possible, cold cracking risk is hit to reduce, even if not cut off the water (such as on-the-spot power failure or overhaul of the equipments etc.), again first low discharge should also be adopted during water flowing, then progressively the mode of enlargement discharge carries out, and water temperature also should adopt the mode being gradually lowered to carry out。
5. second phase temperature control:
After concrete reaches second-stage cooling target temperature, before seam (envelope arch) grouting, generally have the temperature control period of about 7-15 days, temperature control in order that prevent latter temperature from ging up, reduce the opening degree stitched, thus affecting its concrete castability。The speed that during second phase temperature control, concrete residual water heat-transformation distributes is relatively small, therefore, in this case, is generally adopted the mode reducing water flowing flow relatively better to carry out temperature control, and should avoid water flowing mode off and on。
The above; it it is only presently preferred embodiments of the present invention; not the present invention is done any pro forma restriction, every any simple modification, equivalent variations and modification above example made according to the technical spirit of the present invention, all still belongs to the protection domain of technical solution of the present invention。
Claims (1)
1. the intelligent control method utilizing concrete dam ideal temperature control curve model, it is characterised in that:
According to this concrete dam ideal temperature control curve model, control the change procedure of temperature by adjusting the water flowing flow of construction time；
The change procedure controlling temperature is divided into the next stage:
(1) placement temperature controls, if wherein outlet temperature is higher than design load, and ambient temperature is higher than outlet temperature, by strengthening surface heat preservation, and reduces concrete and mixes and stirs the temperature of front various composition dispensing to control placement temperature；If ambient temperature is lower than outlet temperature and design load, temperature when reducing concrete to face, storehouse by the mode dispelled the heat；
(2) placing temperature controls, and controls placing temperature by reducing the germinal layer cover time；
(3) the concrete cooling stage: in a phase temperature control, if there is the phenomenon that exceeds standard in placing temperature, the mode or the raising water flowing flow that adopt appropriateness reduction coolant water temperature are controlled, if placing temperature is lower than design load, then by postponing water flowing or adopting the mode of high water temperature and low discharge to be controlled；In phase cooling, control by reducing water flowing flow or raising coolant water temperature；In cooling in mid-term and temperature control, if mid-term, cooling started, concrete miss the mark temperature, then strengthen water flowing every day flow, if lower than cooling down starting temperature mid-term during concrete cooling in mid-term beginning, so reduce water flowing every day flow, if there is phenomenon of cutting off the water, then when again cooling down, cooler-water temperature first improves, then reducing coolant water temperature, flow adopts and is controlled by the little mode being gradually increased；In the second phase lowers the temperature, if second-stage cooling starts, concrete miss the mark temperature, so strengthen water flowing every day flow, if lower than second-stage cooling starting temperature when concrete second-stage cooling starts, then reduce water flowing every day flow, if there is phenomenon of cutting off the water, so again adopt during water flowing first low discharge more progressively the mode of enlargement discharge carry out, water temperature adopts the mode being gradually lowered to carry out；In second phase temperature control, adopt the mode reducing water flowing flow to carry out temperature control, and avoid water flowing mode off and on。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310524712.9A CN103603312B (en) | 2013-10-30 | 2013-10-30 | A kind of concrete dam ideal temperature control curve model and utilize its intelligent control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310524712.9A CN103603312B (en) | 2013-10-30 | 2013-10-30 | A kind of concrete dam ideal temperature control curve model and utilize its intelligent control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103603312A CN103603312A (en) | 2014-02-26 |
| CN103603312B true CN103603312B (en) | 2016-06-22 |
Family
ID=50121567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310524712.9A Expired - Fee Related CN103603312B (en) | 2013-10-30 | 2013-10-30 | A kind of concrete dam ideal temperature control curve model and utilize its intelligent control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103603312B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332378B (en) * | 2015-10-19 | 2017-03-22 | 中国水利水电科学研究院 | Intelligent temperature control grouting system for concrete dam joint |
| CN105421281B (en) * | 2015-10-20 | 2017-09-12 | 中国水利水电科学研究院 | Arched concrete dam temperature load intelligent adjusting method |
| CN106677115B (en) * | 2017-01-22 | 2019-05-07 | 中国水利水电科学研究院 | Concrete dam downstream face moisture film intelligent heat preserving method |
| CN106647289B (en) * | 2017-03-06 | 2019-09-10 | 武汉大学 | The feed forward control method of gate delay opening and closing time is dispatched in open channel water delivery |
| CN107561252B (en) * | 2017-08-17 | 2020-03-10 | 武汉理工大学 | Method for calculating temperature circulating stress of asphalt concrete pavement |
| CN107843555B (en) * | 2017-12-20 | 2023-11-07 | 清华大学 | Method and device for detecting true bonding strength of transverse seam of arch dam |
| CN110106835B (en) * | 2019-05-20 | 2021-04-16 | 华电福新周宁抽水蓄能有限公司 | Analysis method for temperature control and crack prevention influence of narrow V-shaped valley on concrete at steep slope dam section |
| CN110188464B (en) * | 2019-05-30 | 2021-02-12 | 中国水利水电科学研究院 | Method for determining water cooling control curve in concrete arch dam construction period |
| CN111046457B (en) * | 2019-11-08 | 2022-02-01 | 清华大学 | Temperature control curve model for construction full-period concrete arch dam |
| CN110950679A (en) * | 2019-11-27 | 2020-04-03 | 中国电建集团华东勘测设计研究院有限公司 | Whole-process temperature control method for low-heat cement concrete construction period of high arch dam |
| CN113048699B (en) * | 2021-05-13 | 2022-04-19 | 中国水利水电第九工程局有限公司 | Dam concrete water cooling process and device in high altitude cold region |
| CN113886926B (en) * | 2021-10-14 | 2023-02-17 | 中国水利水电科学研究院 | Temperature control anti-cracking method for water diversion branch pipe of high-pressure water channel |
| CN114487012B (en) * | 2021-12-29 | 2023-11-03 | 南京大学 | Soil body surface crack development pre-judging method |
| CN114319248B (en) * | 2022-01-05 | 2024-01-23 | 中国水利水电第一工程局有限公司 | Concrete dam bin surface maintenance method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011111849A (en) * | 2009-11-30 | 2011-06-09 | Ministry Of Land Infrastructure & Transport Hokkaido Regional Development Bureau | Method of constructing mass concrete structure |
| CN102852145A (en) * | 2012-08-14 | 2013-01-02 | 清华大学 | Method and system for intelligently controlling temperature of concretes of dam under construction |
-
2013
- 2013-10-30 CN CN201310524712.9A patent/CN103603312B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011111849A (en) * | 2009-11-30 | 2011-06-09 | Ministry Of Land Infrastructure & Transport Hokkaido Regional Development Bureau | Method of constructing mass concrete structure |
| CN102852145A (en) * | 2012-08-14 | 2013-01-02 | 清华大学 | Method and system for intelligently controlling temperature of concretes of dam under construction |
Non-Patent Citations (1)
| Title |
|---|
| 溪洛渡拱坝混凝土施工温度控制设计;王仁坤等;《水工大坝混凝土材料和温度控制研究与进展》;20091130;第264-273页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103603312A (en) | 2014-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103603312B (en) | A kind of concrete dam ideal temperature control curve model and utilize its intelligent control method | |
| CN206844742U (en) | A kind of assembled energy-saving communication base station room | |
| CN106522229B (en) | The method and device of concrete dam temperature can forever be regulated and controled | |
| CN105672187B (en) | One kind is used for door opening shape section structure lining concrete temperature controlled anticracking design and calculation method | |
| CN105260531B (en) | A kind of calculation method of circular cross section lining concrete construction time inside maximum temperature | |
| CN101701495A (en) | Individualized circulation method for temperature control of bulk concrete | |
| CN108297246A (en) | Prevent concrete block from generating fracture unit technique | |
| CN106869503A (en) | A kind of concreting method of concrete heat-insulating curtain wall | |
| CN105507219B (en) | A kind of method for preventing High Concrete Dam gallery crown and bottom slab crack | |
| CN108951966A (en) | The decoration integrated assembling type outer wall plate of basalt fibre grid concrete heat-insulating | |
| CN104695709B (en) | Adopt the control of concrete cracks method of phase-change material | |
| CN206233241U (en) | The device of concrete dam temperature can forever be regulated and controled | |
| CN110282924A (en) | A kind of concrete construction method for winter construction | |
| CN110056097A (en) | A kind of fiberglass gridding ultra-high performance concrete heat preservation decoration integrative assembling type outer wall plate | |
| CN110359458B (en) | Intelligent protection management system for mass concrete | |
| CN104230251A (en) | Mass concrete in winter as well as preparation method and construction method of mass concrete | |
| CN110569553A (en) | Method for controlling cooling age of coal ash doped low-calorific-value lining concrete through water | |
| CN108425685B (en) | Concrete crack control method based on cast-in-place tunnel | |
| CN106587693B (en) | A kind of expansion process adjustable outer water mixing working platform light calcined magnesia dam concrete preparing process and construction method | |
| CN105822068A (en) | Ultra-long thin wall concrete wall pouring and maintenance method under high temperature environment | |
| CN208901644U (en) | A kind of hot-blast stove furnace foundation hot wind leakage plugging structure | |
| CN209011386U (en) | The decoration integrated assembling type outer wall plate of basalt fibre grid concrete heat-insulating | |
| CN113191043B (en) | Hydraulic tunnel lining concrete temperature crack control strong constraint method and temperature control system | |
| CN107010993A (en) | Cooling system for mass concrete | |
| CN113149709B (en) | Temperature control method for controlling temperature difference of medium-heat lining concrete through water cooling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160622 Termination date: 20201030 |