CN112457051B - Large-volume concrete construction process for preventing large-volume concrete from cracking - Google Patents
Large-volume concrete construction process for preventing large-volume concrete from cracking Download PDFInfo
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- CN112457051B CN112457051B CN202011357960.5A CN202011357960A CN112457051B CN 112457051 B CN112457051 B CN 112457051B CN 202011357960 A CN202011357960 A CN 202011357960A CN 112457051 B CN112457051 B CN 112457051B
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- water circulation
- concrete
- mass concrete
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0075—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability making use of a decrease in temperature
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- 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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/246—Safety or protective measures preventing damage to building parts or finishing work during construction specially adapted for curing concrete in situ, e.g. by covering it with protective sheets
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
Abstract
The invention discloses a mass concrete construction process for preventing mass concrete from cracking, which comprises the following steps: drawing a mounting structure schematic diagram of a water circulation control system; the water circulation support comprises a plurality of water circulation units which are arranged at intervals, and a grid-shaped water flow channel is formed in each water circulation unit; the upper left corner and the upper right corner of each latticed water flow channel are provided with a water inlet and a water outlet which are communicated with the latticed water flow channels; after laying a bottom layer reinforcing steel bar net sheet and binding the bottom layer reinforcing steel bar net sheet in place, welding the bottom of each water circulation unit and the bottom layer reinforcing steel bar net sheet together; binding reinforcing steel bar meshes layer by layer on each reinforcing steel bar mesh supporting layer from bottom to top; the water inlets of the water circulation units are connected with the water pump through a water inlet pipe and connected with an external water storage tank through the water pump, and meanwhile, the water outlets of the water circulation units are connected with the water storage tank through a water outlet pipe to form a plurality of water circulation waterways; and (5) pouring concrete.
Description
Technical Field
The invention relates to the field of building construction, in particular to a large-volume concrete construction process for preventing large-volume concrete from cracking.
Background
The mass concrete with the minimum geometric dimension of the mass concrete cross-shaped concrete structure entity not less than 1m is widely applied to foundation setting construction of water conservancy and hydropower engineering, nuclear power engineering, port engineering, traffic and the like. In the construction process, the mass concrete is not easy to dissipate heat, the internal temperature can reach 60-65 ℃ at most, and the duration is longer, so that the cracking phenomenon can occur in the mass concrete. Once this occurs, it is difficult to restore the structural integrity by repair or the like, and thus solving the problem of mass concrete cracking is an urgent need for solving the technical problem in construction.
In order to solve the above problems, the following methods are mainly adopted in the prior art: 1. the concrete formula is improved, the phase change material and the starch-based hydration heat regulating material are added in the concrete formula, the phase change material absorbs heat generated by hydration of the concrete, and the hydration heat release rate of the cement is reduced by combining the hydration heat regulating material. 2. The cold water circulating water pipe is arranged in the concrete, and the heat in the concrete is taken away by circulating the cold water, so that the inside of the concrete is cooled.
The two cooling modes can reduce the cracking phenomenon of the mass concrete to a certain extent, but other materials are added into the concrete to cause certain influence on the strength of the concrete, and the real-time adjustment cannot be carried out according to the real-time temperature inside the concrete. The adoption cold water circulating water pipe can regulate and control the water in the water pipe in real time according to the real-time temperature in the concrete, but the installation and the layout of the existing cold water circulating water pipe only have concrete surfaces and ground positions, the middle temperature can not be regulated and controlled, and meanwhile, the existing cold water circulating water pipe system only has one water inlet and one water outlet, and the local temperature of the concrete can not be regulated and controlled in real time.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problems that: how to provide a mass concrete construction process capable of controlling the local temperature of mass concrete and supporting the reinforcing mesh to prevent the mass concrete from cracking.
In order to solve the technical problems, the invention adopts the following technical scheme:
a construction process for mass concrete for preventing mass concrete from cracking is characterized by comprising the following steps: s1, calculating the load of a plurality of layers of reinforcing steel bar meshes in a large-volume concrete structure in unit area according to the area of a to-be-constructed site and the thickness of concrete, and drawing a mounting structure schematic diagram of a water circulation control system according to the load size and the laying range of the reinforcing steel bar meshes; s2, prefabricating a water circulation support in a factory according to the installation structure schematic diagram of the water circulation control system in the S1, wherein the water circulation support comprises a plurality of water circulation units arranged at intervals, each water circulation unit is internally provided with a grid-shaped water flow channel, the grid-shaped water flow channels are internal channels formed by connecting a plurality of transverse pipes and vertical pipes, and the transverse pipes positioned at the same horizontal position form a reinforcing steel mesh supporting layer; the upper end of each latticed water flow channel is provided with a water inlet and a water outlet which are communicated with the internal water flow channel; s3, lofting a large-volume concrete plane size on a flat ground by using a measuring instrument, and marking the installation position of each water circulation unit in the plane; s4, paving the bottom layer reinforcing steel bar meshes, binding the bottom layer reinforcing steel bar meshes in place, and welding the bottoms of the water circulation units and the bottom layer reinforcing steel bar meshes together according to the installation positions of the water circulation units marked on the ground after the bottom layer reinforcing steel bar meshes are checked and accepted; s5, at least one temperature sensor is fixedly arranged on each reinforcing mesh support layer of each water circulation unit; s6, binding the reinforcing steel bar meshes layer by layer on each reinforcing steel bar mesh supporting layer from bottom to top; s7, performing S7; the water inlets of the water circulation units are connected with the water pump through a water inlet pipe and connected with an external water storage tank through the water pump, and meanwhile, the water outlets of the water circulation units are connected with the water storage tank through a water outlet pipe to form a plurality of water circulation waterways; s8, pouring concrete in different bins and layers; and S9, after the concrete pouring of each layer is finished, adopting a water pump to continuously cool the interior of the concrete according to the temperature monitored by each temperature sensor, and simultaneously, carrying out heat preservation and moisture preservation maintenance on the mass concrete. Like this, the hydrologic cycle support has a plurality of hydrologic cycle units that the interval set up to constitute, and each hydrologic cycle unit is intake, drainage alone, forms a hydrologic cycle pipeline that constantly circulates after with the water pump UNICOM, and then can cool down to bulky concrete part through each hydrologic cycle unit, realizes local temperature control. The grid-shaped water flow channels formed in the water circulation units can enable the water flow paths to be grid-shaped, so that concrete at each position can be cooled, and the temperature control is uniform. During assembly, each water circulation unit is connected with the vertical pipe through the transverse pipe, and the assembly is convenient and standard. The temperature sensor can detect the temperature of each position of the concrete, and after feeding back temperature data to constructors, the water pump is started according to the temperature requirement of the mass concrete, the internal temperature of the concrete is regulated and controlled, and the regulation and control are convenient. In addition, the horizontal pipe that is located same height in the hydrologic cycle unit in this application can form the support to the reinforcing bar net piece, can increase the steadiness of reinforcing bar net piece for the reinforcing bar net piece is also non-deformable after trampling.
Further, the transverse pipes and the vertical pipes of the water circulation units are connected through water pipe connectors, and the water pipe connectors are two-way connectors or three-way connectors or four-way connectors according to the quantity of the transverse pipes and the vertical pipes to be communicated. Therefore, the transverse pipe is connected with the vertical pipe through the water pipe connector, the connecting structure is stable, and the water leakage phenomenon can not occur.
Furthermore, two ends of the transverse pipe and two ends of the vertical pipe are respectively provided with an annular mounting disc, the transverse pipe and the water pipe joint as well as the vertical pipe and the water pipe joint are respectively connected and fixed through a pipe hoop, and the pipe hoops comprise two semicircular upper pipe hoops and two semicircular lower pipe hoops; one end of the upper pipe hoop and one end of the lower pipe hoop are rotatably connected through a rotating shaft, the other end of the upper pipe hoop and the other end of the lower pipe hoop are fixedly connected through a connecting piece, and a circular clamping groove concentric with the pipe hoop is formed inside the connecting piece; the circular mounting plate of the horizontal pipe or the vertical pipe and the arc mounting plate of the corresponding end of the water pipe connector and the horizontal pipe or the vertical pipe are all arranged in the circular clamping groove and clamped and fixed through the upper pipe hoop and the lower pipe hoop. Like this, horizontal pipe and water pipe head and standpipe and water pipe head's connecting portion all are arranged in the circular draw-in groove in the ferrule, and circular draw-in groove centre gripping through the ferrule is together fixed. Two clamping pieces of the pipe hoop are rotationally connected at one end, the other end is connected through the connecting piece, and a closed circular clamping groove is formed in the middle after the two clamping pieces are combined together, so that the connecting ends of the pipe fitting and the water pipe connector can be clamped in the circular clamping groove, the pipe fitting and the water pipe connector are connected and fastened, and no water leakage phenomenon exists.
Further, before binding the reinforcing steel meshes in the middle, the water circulation units are connected together through horizontal connecting rods. Like this, horizontal connecting rod can form a whole with each hydrologic cycle unit connection back for hydrologic cycle support is more steady.
Further, the horizontal connecting rods are connected to the intersecting positions of the vertical pipes and the transverse pipes, and form a horizontal support for the reinforcing mesh together with the transverse pipes. Like this, the horizontal connecting rod sets up the position and is in same height with horizontal pipe, and then forms the support to the reinforcing bar net piece together with horizontal pipe, makes the reinforcing bar net piece after the installation structure more firm, forms an integer together with the hydrologic cycle support.
Further, at least one diagonal rod is connected in each square formed by each transverse pipe and each vertical pipe in each water circulation unit. Therefore, the provided diagonal rod can further increase the strength of the water circulation unit, so that the water circulation unit cannot deform or fall off during concrete pouring.
Furthermore, a temperature control switch is arranged at the water inlet connected with each water circulation unit. Therefore, when the concrete temperature is higher than the set temperature, the temperature control switch is turned on to realize water circulation cooling, and when the concrete temperature is lowered to the set temperature, the temperature control switch is turned off to further close the whole water circulation line. The mode can realize automatic control and reduce the operation of workers.
Further, the difference between the internal temperature and the external temperature of the mass concrete is not more than 25 ℃, the difference between the external temperature and the ambient temperature of the mass concrete is controlled within 20 ℃, and the internal temperature of the mass concrete is controlled within 25 ℃. Thus, after the internal and surface temperatures of the mass concrete are effectively controlled, the cracking phenomenon of the concrete can be effectively controlled.
Drawings
Fig. 1 is a schematic structural view of a reinforcing mesh laid on a water circulation bracket in an embodiment;
FIG. 2 is a schematic view of the installation structure of a water circulation bracket in an embodiment;
FIG. 3 is a schematic view of the installation structure of the water circulation unit in the embodiment;
FIG. 4 is a schematic perspective view of a pipe clamp according to an embodiment;
fig. 5 is a schematic diagram of a split structure of a pipe clamp according to an embodiment.
In the figure: the water circulation unit 1, the horizontal pipe 11, the vertical pipe 12, the water pipe joint 13, the water inlet 14, the water outlet 15, the diagonal rod 16, the reinforcing mesh 2, the water inlet pipe 3, the water pump 4, the reservoir 5, the water outlet pipe 6, the horizontal connecting rod 7, the pipe hoop 8, the arc-shaped bent plate 81, the clamping plate 82, the arc-shaped groove 83, the clamping space 84, the connecting protrusion 85, the rotating shaft 86, the connecting piece 87 and the circular clamping groove 88.
Detailed Description
The invention will be further described with reference to the drawings and examples.
Examples:
as shown in fig. 1 to 3, the construction process for mass concrete for preventing mass concrete from cracking provided in this embodiment includes the following steps: s1, calculating the load of each reinforcing mesh unit area in a large-volume concrete structure according to the area of a to-be-constructed site and the thickness of concrete, and drawing a mounting structure schematic diagram of a water circulation control system according to the load size and the laying range of the reinforcing meshes; s2, prefabricating a water circulation bracket in a factory according to the installation structure schematic diagram of a water circulation control system in the S1, wherein the water circulation bracket comprises a plurality of water circulation units 1 which are arranged at intervals, each water circulation unit 1 is internally provided with a grid-shaped water flow channel, the grid-shaped water flow channels are internal channels formed by connecting a plurality of transverse pipes 11 with vertical pipes 12, and the transverse pipes 11 positioned at the same horizontal position form a reinforcing mesh support layer; the upper left corner and the upper right corner of each grid-shaped water flow channel are provided with a water inlet 14 and a water outlet 15 which are communicated with the water flow channels inside the grid-shaped water flow channels; s3, lofting a large-volume concrete plane size on a flat ground by using a measuring instrument, and marking the installation position of each water circulation unit in the plane; s4, paving the bottom layer reinforcing steel bar meshes 2, binding the bottom layer reinforcing steel bar meshes 2 in place, and welding the bottoms of the water circulation units 1 and the bottom layer reinforcing steel bar meshes 2 together according to the installation positions of the water circulation units 1 marked on the ground after the bottom layer reinforcing steel bar meshes 2 are checked and accepted; s5, at least one temperature sensor is fixedly arranged on each reinforcing mesh support layer of each water circulation unit 1; s6, binding the reinforcing steel bar meshes 2 layer by layer on each reinforcing steel bar mesh supporting layer from bottom to top; s7, performing S7; the water inlets 14 of the water circulation units 1 are connected with the water pump 4 through a water inlet pipe 3 and connected with the external water storage tank 5 through the water pump 4, and meanwhile, the water outlets 15 of the water circulation units 1 are connected with the water storage tank 5 through a water outlet pipe 6 to form a plurality of water circulation waterways; s8, pouring concrete in different bins and layers; and S9, after the concrete pouring of each layer is finished, adopting a water pump to continuously cool the interior of the concrete according to the temperature monitored by each temperature sensor, and simultaneously, carrying out heat preservation and moisture preservation maintenance on the mass concrete.
In order to further improve the concrete temperature corresponding to each layer of transverse pipe 11 of each water circulation unit 1 and realize accurate control, when the concrete implementation is carried out, a temperature control valve can be arranged at the position, close to the outer end, of each layer of transverse pipe 11, and a water flow path is controlled through the opening and closing of the temperature control valve.
Specifically, the horizontal pipes 11 and the vertical pipes 12 of each water circulation unit 1 in this embodiment are connected through water pipe connectors 13, and the water pipe connectors 13 are two-way connectors or three-way connectors or four-way connectors according to the number of the horizontal pipes and the vertical pipes to be communicated.
As shown in fig. 3-5, two ends of the horizontal pipe 11 and two ends of the vertical pipe 12 are respectively provided with an annular mounting disc, the horizontal pipe 11 and the water pipe joint 13 and the vertical pipe 12 and the water pipe joint 13 are respectively connected and fixed through a pipe hoop 8, and the pipe hoop 8 comprises an upper pipe hoop and a lower pipe hoop which are semicircular; one end of the upper pipe hoop and one end of the lower pipe hoop are rotatably connected through a rotating shaft 86, the other end of the upper pipe hoop and the lower pipe hoop are fixedly connected through a connecting piece 87, and a circular clamping groove 88 concentric with the pipe hoops is formed inside the connecting piece; the annular mounting plate of the horizontal pipe 11 or the vertical pipe 12 and the arc-shaped mounting plate of the corresponding end of the water pipe joint 13 and the horizontal pipe 11 or the vertical pipe 12 are all arranged in the circular clamping groove 88, and the circular clamping groove 88 formed by surrounding the upper pipe hoop and the lower pipe hoop is clamped and fixed. Specifically, the upper pipe hoop and the lower pipe hoop are each composed of an arc-shaped bent plate 81 and clamping plates 82 arranged on two sides of the arc-shaped bent plate 81, the inner sides of the two clamping plates 82 extend out of the inner sides of the arc-shaped bent plate 81, and an arc-shaped groove 83 is formed together with the arc-shaped bent plate 81; one side of the arc-shaped bending plate 81 is arranged in the two clamping plates 82, a clamping space 84 is formed together with the end parts of the two clamping plates 82, and the other side extends out of the two clamping plates 82 to form a connecting protrusion 85; the connecting protrusion 85 of the upper pipe clamp is clamped in the clamping space 84 of the lower pipe clamp, and the rotating shaft 86 passes through the end parts of the two clamping plates 82 of the lower pipe clamp and the connecting protrusion 85 of the upper pipe clamp to realize rotatable connection; the connecting protrusion 85 of the lower pipe clamp is placed in the clamping space 84 of the upper pipe clamp, and is fixed together after passing through the ends of the clamping plates 82 of the upper pipe clamp and the connecting protrusion 85 of the lower pipe clamp through the connecting piece 87. The clamping space 84 in this embodiment forms a circular clamping groove 88 together with the two arc-shaped grooves 83 after being inserted together with the connecting protrusion 85. The connecting projection 85 has a projection arc length corresponding to the arc length of the clamping space 84. In addition, the clamping plates 82 form a circular ring after the upper pipe hoop and the lower pipe hoop are surrounded, and the inner space diameter of the circular ring is matched with the outer diameter of the transverse pipe, the vertical pipe or the water pipe joint.
In order to improve the stability of the water circulation bracket, the water circulation units 1 can be connected together by a horizontal connecting rod 7 before binding the reinforcing steel meshes 2 in the middle. The horizontal connecting rods 7 are connected at the intersection positions of the vertical pipes 12 and the transverse pipes 11, and form horizontal supports for the reinforcing mesh together with the transverse pipes 11. At least one diagonal rod 16 is connected to each square formed by each horizontal pipe 11 and each vertical pipe 12 in each water circulation unit 1.
The difference between the internal temperature and the external temperature of the mass concrete is not more than 25 ℃, the difference between the external temperature and the ambient temperature of the mass concrete is controlled within 20 ℃, and the internal temperature of the mass concrete is controlled within 25 ℃. A temperature control switch is arranged at the water inlet 14 connected with each water circulation unit 1.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the technical solution, and although the applicant has described the present invention in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents of the technical solution of the present invention can be made without departing from the spirit and scope of the technical solution, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.
Claims (6)
1. A construction process for mass concrete for preventing mass concrete from cracking is characterized by comprising the following steps: s1, calculating the load of each reinforcing mesh unit area in a large-volume concrete structure according to the area of a to-be-constructed site and the thickness of concrete, and drawing a mounting structure schematic diagram of a water circulation control system according to the load size and the laying range of the reinforcing meshes; s2, prefabricating a water circulation bracket in a factory according to a mounting structure schematic diagram of a water circulation control system in the S1, wherein the water circulation bracket comprises a plurality of water circulation units (1) which are arranged at intervals, each water circulation unit (1) is internally provided with a grid-shaped water flow channel, the grid-shaped water flow channels are internal channels formed by connecting a plurality of transverse pipes (11) and a vertical pipe (12), and the transverse pipes (11) positioned at the same horizontal position form a reinforcing mesh support layer; the upper end of each latticed water flow channel is respectively provided with a water inlet (14) and a water outlet (15) which are communicated with the water flow channel inside the latticed water flow channel; s3, lofting a large-volume concrete plane size on a flat ground by using a measuring instrument, and marking the installation position of each water circulation unit in the plane; s4, paving the bottom layer reinforcing steel bar meshes (2) and binding the bottom layer reinforcing steel bar meshes in place, and welding the bottoms of the water circulation units (1) and the bottom layer reinforcing steel bar meshes (2) together according to the installation positions of the water circulation units (1) marked on the ground after the bottom layer reinforcing steel bar meshes are accepted by inspection; s5, at least one temperature sensor is fixedly arranged on each reinforcing mesh support layer of each water circulation unit (1); s6, binding the reinforcing mesh (2) layer by layer on each reinforcing mesh supporting layer from bottom to top; before binding the reinforcing steel bar meshes (2) in the middle, connecting the water circulation units (1) together by using a horizontal connecting rod (7); the horizontal connecting rods (7) are connected to the intersecting positions of the vertical pipes (12) and the transverse pipes (11) and form horizontal supports for the reinforcing mesh together with the transverse pipes (11); s7, performing S7; the water inlet (14) of each water circulation unit (1) is connected with the water pump (4) through a water inlet pipe (3) and is connected with an external water storage tank (5) through the water pump (4), and meanwhile, the water outlet (15) of each water circulation unit (1) is connected with the water storage tank (5) through a water outlet pipe (6) to form a plurality of water circulation waterways; s8, pouring concrete in different bins and layers; and S9, after the concrete pouring of each layer is finished, adopting a water pump to continuously cool the interior of the concrete according to the temperature monitored by each temperature sensor, and simultaneously, carrying out heat preservation and moisture preservation maintenance on the mass concrete.
2. The mass concrete construction process for preventing mass concrete cracking according to claim 1, wherein the horizontal pipes (11) and the vertical pipes (12) of each water circulation unit (1) are connected by water pipe joints (13), and the water pipe joints (13) are two-way joints, three-way joints or four-way joints according to the number of the horizontal pipes and the vertical pipes to be communicated.
3. The process for constructing the mass concrete for preventing the mass concrete from cracking according to claim 2, wherein annular mounting plates are arranged at both ends of the transverse pipe (11) and both ends of the vertical pipe (12), the transverse pipe (11) and the water pipe joint (13) and the vertical pipe (12) and the water pipe joint (13) are fixedly connected through a pipe clamp (8), and the pipe clamp (8) comprises an upper pipe clamp and a lower pipe clamp which are semicircular; one end of the upper pipe hoop and one end of the lower pipe hoop are rotationally connected through a rotating shaft (85), the other end of the upper pipe hoop and the other end of the lower pipe hoop are fixedly connected through a connecting piece (87), and a circular clamping groove (88) concentric with the pipe hoop is formed in the connecting piece; the circular mounting plate of the horizontal pipe (11) or the vertical pipe (12) and the arc mounting plate of the corresponding end of the water pipe connector (13) and the horizontal pipe (11) or the vertical pipe (12) are all arranged in the circular clamping groove (88) and clamped and fixed through the upper pipe hoop and the lower pipe hoop.
4. A mass concrete construction process for preventing cracking of mass concrete according to claim 1, 2 or 3, characterized in that at least one diagonal rod (16) is connected in each square formed by each horizontal pipe (11) and vertical pipe (12) in each water circulation unit (1).
5. The construction process for mass concrete for preventing cracking of mass concrete according to claim 4, wherein a temperature control switch is provided at the water inlet (14) where each water circulation unit (1) is connected.
6. The process for constructing mass concrete for preventing cracking of mass concrete according to claim 1, 2, 3 or 5, wherein the difference between the internal temperature and the external temperature of the mass concrete is not more than 25 ℃, the difference between the external temperature and the ambient temperature of the mass concrete is controlled within 20 ℃, and the internal temperature of the mass concrete is controlled within 25 ℃.
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| CN204312865U (en) * | 2014-11-07 | 2015-05-06 | 陆春勤 | Groove pipeline clamp |
| CN205776234U (en) * | 2016-05-25 | 2016-12-07 | 上海绿地建设(集团)有限公司 | A kind of mass concrete backplanes support cooling structure |
| CN206234430U (en) * | 2016-12-08 | 2017-06-09 | 厦门市台亚塑胶有限公司 | A kind of both-end has the valve of ready-packaged joint |
| CN108869918A (en) * | 2018-06-21 | 2018-11-23 | 北京无线电测量研究所 | A kind of locking device of water pipe head |
| CN208802995U (en) * | 2018-08-06 | 2019-04-30 | 云南省建设投资控股集团有限公司 | Casting of concrete in mass body construction heat of hydration cooling system |
| CN109235270A (en) * | 2018-09-30 | 2019-01-18 | 中交第三航务工程局有限公司 | A kind of main pier bearing platform construction technology |
| CN109209441A (en) * | 2018-11-01 | 2019-01-15 | 中铁十八局集团有限公司 | Mass concrete construction method under a kind of low temperature environment |
| CN109812034A (en) * | 2019-01-31 | 2019-05-28 | 青岛一建集团有限公司 | A kind of cooling for large volume casting concrete structural body, moisture retention construction method |
| CN110259165A (en) * | 2019-06-12 | 2019-09-20 | 同济大学 | A kind of mass concrete self-loopa temperature control maintaining system and maintenance process |
| CN111472358A (en) * | 2020-03-24 | 2020-07-31 | 中国化学工程第三建设有限公司 | Cooling method for interior of mass concrete foundation |
| CN111892423A (en) * | 2020-08-26 | 2020-11-06 | 浙江省三建建设集团有限公司 | Bulky concrete condensing system who combines steel bar support |
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