CN114108633B - Greenhouse for dam concrete pouring in low-temperature season and pouring method - Google Patents
Greenhouse for dam concrete pouring in low-temperature season and pouring method Download PDFInfo
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- CN114108633B CN114108633B CN202111486260.0A CN202111486260A CN114108633B CN 114108633 B CN114108633 B CN 114108633B CN 202111486260 A CN202111486260 A CN 202111486260A CN 114108633 B CN114108633 B CN 114108633B
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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
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H15/00—Tents or canopies, in general
- E04H15/02—Tents combined or specially associated with other devices
- E04H15/10—Heating, lighting or ventilating
- E04H15/12—Heating
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H15/00—Tents or canopies, in general
- E04H15/32—Parts, components, construction details, accessories, interior equipment, specially adapted for tents, e.g. guy-line equipment, skirts, thresholds
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H15/00—Tents or canopies, in general
- E04H15/32—Parts, components, construction details, accessories, interior equipment, specially adapted for tents, e.g. guy-line equipment, skirts, thresholds
- E04H15/34—Supporting means, e.g. frames
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H15/00—Tents or canopies, in general
- E04H15/32—Parts, components, construction details, accessories, interior equipment, specially adapted for tents, e.g. guy-line equipment, skirts, thresholds
- E04H15/54—Covers of tents or canopies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Abstract
The invention provides a greenhouse for dam concrete pouring in low-temperature seasons and a pouring method. The greenhouse comprises a heightened greenhouse support, a greenhouse top cover, heat-preservation tarpaulin and a fan heater arranged in the greenhouse; the top of the greenhouse support is provided with a plurality of hanging tank inlet openings, and the greenhouse top cover is formed by combining a plurality of sliding open type top covers arranged at the hanging tank inlet openings; the concrete pouring of the dam is to set up the warm shed in an area to be poured, control a sliding opening type top cover at the entering position of the suspension tank to open and expose an opening matched with the concrete suspension tank, directly and vertically enter the concrete suspension tank into the warm shed from the top of the warm shed for layering and concrete pouring, when the concrete is poured to the connecting part of the lower upright post support and the upper upright post support, the upper upright post support is detached and lifted integrally, and a section of new lower upright post support is added for continuously pouring the concrete. The invention can open the top cover of any area to vertically enter the bin for pouring, thereby ensuring the requirement of uniform pouring and having less heat loss.
Description
Technical Field
The invention relates to the field of dam concrete construction, in particular to a warm shed for dam body concrete pouring in low-temperature seasons and a pouring method.
Background
National hydropower construction gradually shifts to high and cold regions in the southwest, the annual average temperature of the regions is low, the average temperature of a plurality of months throughout the year is lower than 5 ℃, and the temperature difference between day and night is large. In order to ensure the construction period of the project, the project construction can not avoid the need of construction in low-temperature seasons. However, the low temperature has a great influence on the concrete pouring of the paving germinal layer, which causes slow setting and hardening of the newly poured concrete within a certain thickness range and slow strength increase, thereby affecting the strength of the concrete. If the temperature of the concrete drops below the freezing point, the frozen water cannot be combined with the cement, new compounds generated by chemical reaction in the concrete are greatly reduced, initial defects can be generated, the concrete is degraded, and the loss of the strength and the durability of the concrete can be caused; and if the temperature difference of the concrete member is large, temperature cracks can also occur, and the safety of engineering is finally influenced. Therefore, the construction problem of the concrete for the hydraulic and hydroelectric engineering in the cold area in the low-temperature season must be studied.
In order to reduce the temperature difference of concrete members and reduce the influence of low-temperature environment on concrete pouring, the scheme of continuous construction in low-temperature seasons by using a warm shed is mostly adopted in the concrete construction in various low-temperature seasons; the method specifically comprises the steps of building a greenhouse before concrete pouring, supplying heat in the greenhouse, and providing an environment suitable for concrete pouring through the greenhouse. The existing warm shed is mainly characterized in that a door body is arranged on one side of the existing warm shed, then concrete mixture is horizontally sent into the warm shed for pouring, and the pouring mode is suitable for small-size concrete pouring. Because the dam in the hydraulic and hydroelectric engineering is large in size, a large amount of concrete materials are consumed for large-size concrete pouring, and in order to improve the construction efficiency and ensure the pouring uniformity, a method for vertically putting a concrete tank into a bin for pouring is commonly used; therefore, the existing greenhouse is not suitable for large-volume concrete pouring similar to a dam and cannot be matched with vertical warehousing of large-volume concrete pouring.
In addition, the layer-by-layer construction is that after the previous layer of casting work is finished, the next layer of casting is carried out on the basis of the previous layer, the volume of the existing greenhouse is fixed, if the greenhouse is arranged according to the overall height of dam casting, the volume of the greenhouse is very large, the casting space is large, the constant temperature environment of the large space needs to be kept all the time, a large amount of energy is consumed, the resource waste is caused, and the construction cost is greatly increased; if the greenhouses are built in layers according to the pouring height, the greenhouses need to be detached and built again after pouring is completed every time, the disassembly and the assembly are complex, the split pouring interval is too long due to the fact that the greenhouses are disassembled and assembled, the concrete quality is reduced, and the split pouring method cannot be matched with the layer-by-layer pouring of large-volume concrete pouring.
Disclosure of Invention
The invention provides a greenhouse for dam concrete pouring in low-temperature seasons and a pouring method in order to ensure construction quality and match with the requirements of vertical warehousing and layered pouring of concrete in the process of pouring large-volume concrete.
In order to meet the technical requirements, the invention provides a warm shed for pouring dam concrete in low-temperature seasons, which is characterized in that: the greenhouse comprises a greenhouse support, a greenhouse top cover arranged on the top surface of the greenhouse support, heat-insulating tarpaulin arranged on the side surface of the greenhouse support in a surrounding manner and a fan heater arranged in the greenhouse; the greenhouse support comprises a first upright post support, a second upright post support and a top supporting frame, wherein the first upright post support and the second upright post support are symmetrically arranged at two sides of a concrete pouring area, the top supporting frame is connected to the top ends of the first upright post support and the second upright post support, the first upright post support and the second upright post support are assembled supports formed by connecting an upper upright post support and a lower upright post support through connecting members, the upper upright post supports of the first upright post support and the second upright post support are connected with the top supporting frame into a whole, and a plurality of suspension tank inlet openings are formed in the top supporting frame; the greenhouse top cover is formed by combining a plurality of sliding open type top covers installed at each hanging tank inlet opening, each sliding open type top cover comprises an upper sliding rail, a lower sliding rail, an upper sliding cover and a lower sliding cover, the upper sliding rail and the lower sliding rail are installed on a top supporting frame in an overlapping mode, the upper sliding cover is installed on the upper sliding rail through an upper sliding mechanism, the lower sliding cover is installed on the lower sliding rail through a lower sliding mechanism, and the upper sliding cover and the lower sliding cover slide to open or close the hanging tank inlet opening along corresponding sliding rails under the action of the upper sliding mechanism and the lower sliding mechanism respectively.
The invention has the following excellent technical scheme: the greenhouse still is equipped with automatic control system, automatic control system includes the controller, distributes a plurality of temperature probe in the greenhouse and sets up and be equipped with the camera in every overhead tank entrance department, the signal output part of a plurality of temperature probe and camera is connected with the signal input part of controller, and the signal output part of controller is connected with electric fan heater and every upper sliding mechanism, the lower floor sliding mechanism's of sliding open top cap control end.
The invention has the following excellent technical scheme: the top supporting frame is composed of a plurality of trusses which are arranged in parallel, a tank lifting inlet with the width matched with the width of the single sliding open type top cover is formed between every two adjacent trusses, the length of each tank lifting inlet is multiple of the length of the single sliding open type top cover, one, two or more than two sliding open type top covers are installed at each tank lifting inlet, an upper sliding rail and a lower sliding rail of each sliding open type top cover respectively comprise two parallel sliding rails, the two sliding rails are symmetrically and fixedly installed on the trusses, an upper sliding cover and a lower sliding cover are overlapped at the tank lifting inlet between the two adjacent trusses, the total length of the upper sliding cover and the lower sliding cover is larger than or equal to the length of the sliding rails, the tank lifting inlet is completely shielded when the upper sliding cover and the lower sliding cover of each sliding open type top cover are completely unfolded, and an opening with the size matched with the concrete tank lifting inlet is exposed when the upper sliding cover and the lower sliding cover of any sliding open type top cover are overlapped; the first upright post support and the second upright post support respectively comprise a plurality of I-shaped steel upright posts correspondingly connected to two ends of the truss, and each upright post is formed by connecting an upper I-shaped steel upright post and a lower I-shaped steel upright post through a connecting member.
The invention has the advantages that: the connecting members comprise metal connecting sheets and connecting bolts, bolt holes are correspondingly formed in the connecting parts of the upper upright post support and the lower upright post support, each upright post of the upright post support is connected through a plurality of metal connecting sheets, and in the concrete pouring process, upright post sections are increased between the upper upright post support and the lower upright post support through the connecting members according to the concrete pouring height; the front side and the rear side of the greenhouse are respectively provided with a greenhouse door, the greenhouse doors are arranged on the heat-preservation tarpaulin, and the greenhouse doors move upwards along with the height of concrete pouring.
The invention has the following excellent technical scheme: the fan heater is arranged on the top supporting frame, and the spraying device is arranged on the top supporting frame; the plurality of temperature probes are distributed on the top supporting frame, and a plurality of cameras are arranged at the inlet of each suspension tank.
The invention has the advantages that: the upper-layer sliding mechanism and the lower-layer sliding mechanism respectively comprise a motor, a conveying mechanism, a driving conveying roller and a driven conveying roller, the driving conveying roller and the driven conveying roller are symmetrically arranged on the inner sides of the two sliding rails, and the motors are in transmission connection with the driving conveying roller through the conveying mechanism; the transmission mechanism comprises a driving gear, a transmission gear arranged on a rotating shaft of each driving transmission roller, a first transmission belt connecting the driving gear and an output shaft of the motor and a second transmission belt connecting a plurality of transmission gears, wherein the driving gear is arranged on a rotating shaft of one or more driving transmission rollers; the two sides of the upper sliding cover and the lower sliding cover are respectively provided with a first sliding chute matched with the driving transmission roller and a second sliding chute matched with the driven transmission roller, the upper sliding cover is respectively in sliding connection with the driving transmission roller and the driven transmission roller on the inner side of the upper sliding rail through the sliding chutes on the two sides and horizontally moves along the upper sliding rail under the action of the upper motor and the transmission mechanism; the lower sliding cover is respectively connected with the driving conveying roller and the driven conveying roller on the inner side of the lower sliding rail in a sliding mode through sliding grooves in two sides, and moves horizontally along the lower sliding rail under the action of a lower motor and a transmission mechanism.
The invention has the advantages that: the upper sliding cover and the lower sliding cover both adopt rock wool color steel sandwich plates, the lengths of the upper sliding cover and the lower sliding cover are equal, and the length is 1/2 of the length of the sliding rail.
In order to achieve the technical purpose, the invention provides a low-temperature-season dam concrete pouring method, which uses the warm shed for low-temperature-season dam concrete pouring to pour, and comprises the following specific steps:
s1: manufacturing a greenhouse support and a sliding open-type top cover with corresponding sizes according to the size of the dam section, fixedly installing the sliding open-type top cover at the top of the greenhouse support, directly and fixedly installing the assembled greenhouse support at the dam section of the concrete to be poured, or installing the greenhouse support in the dam section area of the concrete to be poured; the bottom of the lower upright post bracket of the greenhouse bracket is riveted on the ground, and the assembled greenhouse completely shields the dam section of the concrete to be poured;
s2: installing a fan heater and a spraying device on a supporting frame at the top of the greenhouse, installing flexible heat-insulating tarpaulins on the front, the rear, the left and the right surfaces of a greenhouse support, enclosing the four surfaces of the greenhouse support through the heat-insulating tarpaulins, and respectively arranging an access door on the front side and the rear side of the greenhouse support, wherein the height of the flexible heat-insulating tarpaulins is suitable for different casting heights;
s3: after the greenhouse is erected, concrete pouring is started, concrete pouring is carried out in a layered mode, pouring of concrete in each layer is completed by directly vertically enabling a concrete suspension tank to enter the greenhouse from the top of the greenhouse, the greenhouse is heated through a warm air blower in the pouring process, and meanwhile a spraying device is started to humidify the greenhouse, so that the temperature and the humidity in the greenhouse meet the concrete pouring requirements; before the concrete suspension tank enters each time, controlling an upper sliding cover and a lower sliding cover of a sliding open type top cover corresponding to a suspension tank entering area to move to one side of a sliding rail, overlapping to expose an opening with the size matched with that of the concrete suspension tank, vertically entering the suspension tank into a greenhouse through the opening to pour concrete, and embedding a lower upright post support into the concrete in the pouring process;
s4: repeating the step S3, pouring in layers until the concrete embedding height is close to the connecting part of the lower upright post support and the upper upright post support, removing the connecting part between the lower upright post support and the upper upright post support when the newly poured concrete is hardened to a certain degree, integrally lifting the upper part of the greenhouse by using a cable crane, connecting the top of the lower upright post support embedded in the concrete with a new lower upright post support, and then connecting the lifted upper upright post support with the new lower upright post support through the connecting part;
s5: and repeating the step S3 and the step S4 to finish the concrete pouring work of the whole dam section.
The invention has the following excellent technical scheme: in the step S3, a plurality of temperature probes are arranged at the top in the greenhouse, a plurality of cameras are arranged on two sides of a sliding open type top cover of the greenhouse, and a control system is arranged outside the greenhouse; in the concrete pouring process, the temperature in the greenhouse is sensed through the temperature probe, a sensing signal is transmitted to the control system, and the control system controls the air volume of the fan heater and the hot air temperature to automatically adjust the temperature in the greenhouse; the position of the concrete bucket in the warehouse is monitored through the camera, signals are transmitted to the control system, and the control system controls the sliding opening of the upper sliding cover and the lower sliding cover of the sliding opening type top cover at the corresponding positions.
The invention has the advantages that: the upright post bracket in the step S1 comprises two rows of upright posts which are distributed at equal intervals, the two rows of upright posts are symmetrically arranged at two sides of a dam section of concrete to be poured, the bottom of each upright post is riveted on the ground, and the upright posts are arranged at intervals and vertical to the axis direction of the dam; and 2, the height of the flexible heat-insulation tarpaulin in the step 2 is greater than that of the stand column support, the upper part of the flexible heat-insulation tarpaulin is fixed on the stand column support at the upper part, the lower part of the flexible heat-insulation tarpaulin directly covers the outer part of the stand column support at the lower part, and the flexible heat-insulation tarpaulin ascends along with the stand column support at the upper part in the lifting process of the stand column support.
Compared with the prior art, the invention has the beneficial effects that:
1. the top cover of the greenhouse is composed of a plurality of double-layer sliding top covers, each sliding top cover comprises an upper top cover and a lower top cover, the two top covers can be opened in a sliding mode under the control of a motor, the opening area of each top cover is matched with the volume of a concrete suspension tank, concrete can be conveniently and vertically suspended into the greenhouse to pour a dam, large-volume concrete in the greenhouse is vertically and uniformly poured into a bin, the large-volume concrete can be suitable for concrete pouring construction of the dam in cold regions and low-temperature seasons, and the efficiency and the quality of large-volume concrete pouring in a low-temperature environment are improved;
2. the greenhouse fixing frame adopts a rigid frame and truss mixed structure, the weight is relatively light, the structure is stable, the greenhouse adopts an I-shaped steel bolt with the specific size at the upper part and the lower part as a supporting structure, and the vertical columns at the middle part are increased according to the concrete pouring height of a dam under the condition that the ceiling is slightly disassembled or not disassembled, so that the height of the whole ceiling is lifted;
3. the upper warm shed is of an integral structure, the fan heater and the temperature control system are both arranged on the upper warm shed, and when the dam is lifted and poured, the truss, the top cover, the fan heater and other equipment can be integrally lifted without disassembly and reassembly, so that the working time is saved;
4. the top cover of the greenhouse is provided with the sensing system, and in a pouring period, the top sensing equipment intelligently positions and selects a proper top cover to open by sensing the position of the suspension tank and vertically enters a warehouse in cooperation with the concrete suspension tank;
5. the greenhouse is internally provided with an automatic monitoring system which can monitor the temperature of each area in the greenhouse, and control the heating equipment to be opened and closed according to the temperature information obtained by the system, so as to realize the temperature control in the greenhouse;
6. the greenhouse can be built into different sizes according to the size of the warehouse surface, the peripheral side surfaces of the greenhouse are wrapped by the flexible heat-insulation tarpaulin, the greenhouse can adapt to different dam sections and pouring block shapes, the warehouse surface is completely covered, the heat-insulation effect is guaranteed, and the greenhouse can also be suitable for lifting adjustment of the greenhouse.
The greenhouse can be gradually lifted along with the layered pouring of concrete; when the suspension tank is vertically put into the warehouse, the top cover of the greenhouse can be automatically opened and closed for application in a matching way; the top cover of any area can be opened, the requirement of uniform pouring is ensured, the heat loss is less, and the proper concrete pouring and curing conditions are ensured; is suitable for the construction of hydropower engineering in alpine regions.
Drawings
FIG. 1 is a schematic view of the overall structure of the greenhouse of the present invention;
FIG. 2 is a schematic view of the present invention showing the state of use of the greenhouse;
FIG. 3 is a schematic view of the structure of the sliding open top cover of the present invention;
FIG. 4 is a longitudinal cross-sectional view of the slide open top of the present invention;
FIG. 5 is a side schematic view of the slide open top of the present invention;
FIG. 6 is a schematic view of the connection of the vertical column of the present invention;
fig. 7 is a control schematic of the present invention.
In the figure: 1-sliding open type top cover, 100-upper sliding rail, 101-lower sliding rail, 102-upper sliding cover, 103-lower sliding cover, 104-motor, 105-driving conveying roller, 106-driven conveying roller, 107-driving gear, 108-transmission gear, 109-first transmission belt, 110-second transmission belt, 111-first chute, 112-second chute, 2-heat preservation tarpaulin, 3-first upright post bracket, 300-upper upright post bracket, 301-lower upright post bracket, 302-connecting member, 4-second upright post bracket, 5-top supporting frame, 6-overhead tank inlet, 7-warm air blower, 8-temperature probe, 9-camera, 10-greenhouse door, 11-concrete pouring layer.
Detailed Description
The invention is further illustrated by the following figures and examples. Fig. 1 to 6 are drawings of embodiments, which are drawn in a simplified manner and are only used for the purpose of clearly and concisely illustrating the embodiments of the present invention. The following claims presented in the drawings are specific to embodiments of the invention and are not intended to limit the scope of the claimed invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, or orientations or positional relationships conventionally placed when the products of the present invention are used, or orientations or positional relationships conventionally understood by those skilled in the art, which are merely for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is also to be noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect through an intermediate medium, and the connection may be internal to the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The greenhouse for the low-temperature seasonal dam concrete pouring comprises a greenhouse support, a greenhouse top cover installed on the top surface of the greenhouse support, heat-preservation tarpaulin 2 arranged on the side face of the greenhouse support in an enclosing mode and an air heater 7 arranged in the greenhouse, wherein a spraying device is further arranged in the greenhouse, the air heater 7 is used for providing hot air for the greenhouse to heat, the spraying device is used for spraying and humidifying, the greenhouse support comprises a first stand column support 3 and a second stand column support 4 which are symmetrically arranged on two sides of a concrete pouring area and a top supporting frame 5 connected to the top ends of the first stand column support 3 and the second stand column support 4, the air heater 7 and the spraying device are installed on the top supporting frame 5, a plurality of temperature probes 8 are arranged on the top supporting frame 5, the temperature in the greenhouse can be monitored through the temperature probes 8, and humidity probes can be arranged to monitor humidity. The heat-insulation tarpaulin 2 is a flexible heat-insulation tarpaulin, the top supporting frame 5 is composed of a plurality of trusses which are arranged in parallel, a tank lifting inlet 6 with the width matched with that of the single sliding open top cover 1 is formed between every two adjacent trusses, and the length of each tank lifting inlet 6 is the length of the two sliding open top covers 1. The first upright support 3 and the second upright support 4 respectively include a plurality of h-shaped steel uprights correspondingly connected to two ends of the truss, as shown in fig. 6, each upright is formed by connecting an upper h-shaped steel upright and a lower h-shaped steel upright through a connecting member 302, and the upper h-shaped steel upright is fixedly connected with the truss. The connecting members 302 comprise metal connecting sheets and connecting bolts, bolt holes are correspondingly formed in the connecting parts of the upper upright post bracket 300 and the lower upright post bracket 301, each upright post of the upright post bracket is connected through a plurality of metal connecting sheets, and in the concrete pouring process, upright post sections are added between the upper upright post bracket 300 and the lower upright post bracket 301 through the connecting members 302 according to the concrete pouring height; the front side and the rear side of the greenhouse are respectively provided with a greenhouse door 10, the greenhouse door 10 is arranged on the heat preservation tarpaulin 2, and the greenhouse door 10 moves upwards along with the height of concrete pouring.
In the embodiment, as shown in fig. 1 and 2, a plurality of cameras 9 are arranged at each of the suspension tank inlet openings 6, the top cover of the greenhouse is formed by combining a plurality of sliding open top covers 1 installed at each of the suspension tank inlet openings 6, and two sliding open top covers 1 can be installed at each of the suspension tank inlet openings 6. As shown in fig. 3 to 5, each sliding open top cover 1 includes an upper sliding rail 100, a lower sliding rail 101, an upper sliding cover 102 and a lower sliding cover 103, the upper sliding rail 100 and the lower sliding rail 101 of each sliding open top cover 1 both include two parallel sliding rails, the two sliding rails are symmetrically and fixedly mounted on the trusses, the upper sliding cover 102 and the lower sliding cover 103 are overlapped and disposed at the tank crane inlet 6 between two adjacent trusses, the upper sliding cover 102 and the lower sliding cover 103 both use rock wool color steel sandwich boards, the lengths of the upper sliding cover 102 and the lower sliding cover 103 are equal, and are 1/2 of the length of the sliding rails, and the total length of the upper sliding cover 102 and the lower sliding cover 103 may also be slightly greater than the length of the sliding rails. The upper layer sliding cover 102 is arranged on the upper layer sliding rail 100 through an upper layer sliding mechanism, the lower layer sliding cover 103 is arranged on the lower layer sliding rail 101 through a lower layer sliding mechanism, and the upper layer sliding cover 102 and the lower layer sliding cover 103 slide along corresponding sliding ways to open or close the tank-hanging inlet 6 under the action of the upper layer sliding mechanism and the lower layer sliding mechanism respectively. The upper-layer sliding mechanism and the lower-layer sliding mechanism respectively comprise a motor 104, a transmission mechanism, a driving transmission roller 105 and a driven transmission roller 106, the driving transmission roller 105 and the driven transmission roller 106 are symmetrically arranged on the inner sides of the two slide rails, and the motor 104 is in transmission connection with the driving transmission roller 105 through the transmission mechanism; the transmission mechanism comprises a driving gear 107, a transmission gear 108 arranged on the rotating shaft of each driving transmission roller 105, a first transmission belt 109 connecting the driving gear 107 and the output shaft of the motor 104 and a second transmission belt 110 connecting a plurality of transmission gears 108, wherein the driving gears 107 are arranged on the rotating shafts of two driving transmission rollers 105; the two sides of the upper layer sliding cover 102 and the lower layer sliding cover 103 are respectively provided with a first sliding chute 111 matched with the driving transmission roller 105 and a second sliding chute 112 matched with the driven transmission roller 106, the upper layer sliding cover 102 is respectively connected with the driving transmission roller 105 and the driven transmission roller 106 on the inner side of the upper layer sliding rail 100 in a sliding manner through the sliding chutes on the two sides, and moves horizontally along the upper layer sliding rail 100 under the action of an upper layer motor and a transmission mechanism; the lower sliding cover 103 is respectively connected with the driving transmission roller 105 and the driven transmission roller 106 inside the lower sliding rail 101 in a sliding manner through sliding grooves on two sides, and moves horizontally along the lower sliding rail 101 under the action of the lower motor and the transmission mechanism. When the upper sliding cover 102 and the lower sliding cover 103 of each sliding open top cover 1 are completely unfolded, the tank access opening 6 is completely shielded, and when the upper sliding cover 102 and the lower sliding cover 103 of any sliding open top cover 1 are overlapped, an opening with the size matched with that of a concrete tank is exposed.
The embodiment provides a greenhouse for dam concrete placement in low temperature season, as shown in fig. 7, the greenhouse still is equipped with automatic control system, automatic control system includes the controller, distributes a plurality of temperature probe 8 in the greenhouse and sets up and be equipped with camera 9 in every overhead tank inlet port 6 department, the signal output part of a plurality of temperature probe 8 and camera 9 is connected with the signal input part of controller, and the signal output part of controller is connected with electric fan heater and the control end of upper sliding mechanism, the lower sliding mechanism of every slip open top cap 1.
The embodiment provides a method for pouring dam concrete in a low-temperature season, which comprises the following steps of:
s1: manufacturing a greenhouse support and a sliding open-type top cover with corresponding sizes according to the size of the dam section, fixedly installing the sliding open-type top cover at the top of the greenhouse support, directly and fixedly installing the assembled greenhouse support at the dam section of the concrete to be poured, or installing the greenhouse support in the dam section area of the concrete to be poured; the bottom of the lower upright post bracket of the greenhouse bracket is riveted on the ground, and the assembled greenhouse completely shields the dam section of the concrete to be poured; the upright post support comprises two rows of upright posts which are distributed at equal intervals, the two rows of upright posts are symmetrically arranged on two sides of a dam section to be poured with concrete, the bottom of each upright post is riveted on the ground, the upright posts are arranged at intervals and perpendicular to the axis direction of the dam, the length of the upright post on the lower part of each upright post is 4.5m, and the length of the upright post on the upper part is 5.0m.
S2: a warm air blower and a spraying device are arranged on a supporting frame at the top of the greenhouse, flexible heat-insulating tarpaulin is arranged on the front, the back, the left and the right surfaces of the greenhouse support, the four surfaces of the greenhouse support are enclosed by the heat-insulating tarpaulin, an access door is respectively arranged on the front side and the back side of the greenhouse support, and the height of the flexible heat-insulating tarpaulin is suitable for different casting heights; the height of the flexible heat-insulation tarpaulin is greater than that of the stand column support, the upper portion of the flexible heat-insulation tarpaulin is fixed on the stand column support at the upper portion, the lower portion of the flexible heat-insulation tarpaulin directly covers the outer portion of the stand column support at the lower portion, and in the lifting process of the stand column support, the flexible heat-insulation tarpaulin ascends along with the stand column support at the upper portion.
S3: after the greenhouse is erected, concrete pouring is started, concrete pouring is carried out in layers, pouring of concrete in each layer is completed by directly vertically entering a concrete suspension tank into the greenhouse from the top of the greenhouse, the interior of the greenhouse is heated through a fan heater in the pouring process, and meanwhile, a spraying device is started to humidify the interior of the greenhouse, so that the temperature and the humidity in the greenhouse meet the concrete pouring requirements; before the concrete suspension tank enters each time, controlling an upper sliding cover and a lower sliding cover of a sliding open type top cover corresponding to a suspension tank entering area to move to one side of a sliding rail, overlapping to expose an opening with the size matched with that of the concrete suspension tank, vertically entering the suspension tank into a greenhouse through the opening to pour concrete, and embedding a lower upright support into the concrete in the pouring process; a plurality of temperature probes are arranged at the top in the greenhouse, a plurality of cameras are arranged on two sides of a sliding opening type top cover of the greenhouse, and a control system is arranged outside the greenhouse; in the concrete pouring process, the temperature in the greenhouse is sensed through the temperature probe, a sensing signal is transmitted to the control system, and the control system controls the air volume of the fan heater and the hot air temperature to automatically adjust the temperature in the greenhouse; the position of putting into storage of the concrete bucket is monitored through the camera, signals are transmitted to the control system, and the upper sliding cover and the lower sliding cover of the sliding open type top cover at the corresponding positions are controlled by the control system to be opened in a sliding mode.
S4: repeating the step S3 until the concrete embedding height is close to the connection part of the lower upright post support and the upper upright post support, removing the connecting component between the lower upright post support and the upper upright post support when the newly-poured concrete is hardened to a certain degree, integrally lifting the upper part of the greenhouse by using a cable crane, connecting a new lower upright post support at the top of the lower upright post support embedded in the concrete, and then connecting the lifted upper upright post support with the new lower upright post support through the connecting component;
s5: and repeating the step S3 and the step S4 to finish the concrete pouring work of the whole dam section.
The greenhouse can be gradually lifted along with the layered pouring of concrete, the top cover of the greenhouse can be automatically opened and closed to be applied in a matched manner when the suspension tank is vertically put into a warehouse, the top cover in any area can be opened, the requirement of uniform pouring is met, the heat loss is small, and the proper concrete pouring and curing conditions are met. Under the requirement of constructing hydropower engineering in alpine regions, the invention has wide application prospect. According to the invention, the side surfaces around the greenhouse are wrapped by the flexible heat-insulating tarpaulin, the front side and the rear side of the greenhouse are provided with the doors, and the flexible tarpaulin can adapt to different dam sections and pouring block shapes and completely cover the surface of the warehouse.
The above description is only an embodiment of the present invention, and the description is specific and detailed, but not intended to limit the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The utility model provides a low temperature season dam concrete placement uses warm shed which characterized in that: the greenhouse comprises a greenhouse support, a greenhouse top cover arranged on the top surface of the greenhouse support, heat-insulating tarpaulin (2) arranged on the side surface of the greenhouse support in a surrounding manner and a fan heater (7) arranged in the greenhouse; the greenhouse support comprises a first upright post support (3) and a second upright post support (4) which are symmetrically arranged at two sides of a concrete pouring area and a top supporting frame (5) connected to the top ends of the first upright post support (3) and the second upright post support (4), the first upright post support (3) and the second upright post support (4) are assembled supports formed by connecting an upper upright post support (300) and a lower upright post support (301) through a connecting member (302), the upper upright post supports of the first upright post support (3) and the second upright post support (4) are connected with the top supporting frame (5) into a whole, and a plurality of hanging tank inlet openings (6) are formed in the top supporting frame (5); the greenhouse top cover is formed by combining a plurality of sliding open type top covers (1) installed at each hanging tank inlet (6), each sliding open type top cover (1) comprises an upper sliding rail (100), a lower sliding rail (101), an upper sliding cover (102) and a lower sliding cover (103), the upper sliding rail (100) and the lower sliding rail (101) are installed on a top supporting frame (5) in an overlapping mode, the upper sliding cover (102) is installed on the upper sliding rail (100) through an upper sliding mechanism, the lower sliding cover (103) is installed on the lower sliding rail (101) through a lower sliding mechanism, and the upper sliding cover (102) and the lower sliding cover (103) are respectively opened or closed along corresponding sliding rails under the action of the upper sliding mechanism and the lower sliding mechanism to slide the hanging tank inlet (6).
2. The greenhouse of claim 1, wherein the greenhouse comprises: the greenhouse still is equipped with automatic control system, automatic control system includes controller, a plurality of temperature probe (8) of distribution in the greenhouse and sets up and be equipped with camera (9) in every overhead tank inlet port (6) department, the signal output part of a plurality of temperature probe (8) and camera (9) is connected with the signal input part of controller, and the signal output part of controller is connected with electric fan heater and the upper sliding mechanism of every slip open top cap (1), lower sliding mechanism's control end.
3. The greenhouse for pouring concrete in dam in low-temperature season as claimed in claim 1 or 2, wherein: the top supporting frame (5) is composed of a plurality of trusses which are arranged in parallel, a suspension tank inlet (6) with the width matched with the width of the single sliding open type top cover (1) is formed between every two adjacent trusses, the length of each suspension tank inlet (6) is a multiple of the length of the single sliding open type top cover (1), one, two or more than two sliding open type top covers (1) are installed at each suspension tank inlet (6), an upper sliding rail (100) and a lower sliding rail (101) of each sliding open type top cover (1) respectively comprise two parallel sliding rails, the two sliding rails are symmetrically and fixedly installed on the trusses, an upper sliding cover (102) and a lower sliding cover (103) are overlapped at the suspension tank inlet (6) between the two adjacent trusses, the total length of the upper sliding cover (102) and the lower sliding cover (103) is larger than or equal to the length of the sliding rails, and the suspension tank inlet (6) is completely shielded when the upper sliding cover (102) and the lower sliding cover (103) of each sliding open type top cover (1) are completely unfolded, wherein the upper sliding open type sliding cover (102) and the lower sliding open type top cover (103) are completely exposed out of any sliding open type concrete tank; the first upright post support (3) and the second upright post support (4) respectively comprise a plurality of I-shaped steel upright posts correspondingly connected to two ends of the truss, and each upright post is formed by connecting an upper I-shaped steel upright post and a lower I-shaped steel upright post through a connecting member (302).
4. The greenhouse for pouring concrete in dam in low-temperature season as claimed in claim 1 or 2, wherein: the connecting members (302) comprise metal connecting sheets and connecting bolts, bolt holes are correspondingly formed in the connecting parts of the upper upright post bracket (300) and the lower upright post bracket (301), each upright post of the upright post bracket is connected through a plurality of metal connecting sheets, and in the concrete pouring process, upright post sections are added between the upper upright post bracket (300) and the lower upright post bracket (301) through the connecting members (302) according to the concrete pouring height; greenhouse doors (10) are arranged on the front side and the rear side of the greenhouse, the greenhouse doors (10) are arranged on the heat preservation tarpaulin (2), and the greenhouse doors (10) move upwards along with the height of concrete pouring.
5. The greenhouse of claim 2, wherein the greenhouse is used for low-temperature seasonal dam concrete pouring, and is characterized in that: the fan heater (7) is arranged on the top supporting frame (5), and a spraying device is arranged on the top supporting frame (5); the plurality of temperature probes (8) are distributed on the top supporting frame (5), and a plurality of cameras (9) are arranged at each suspension tank inlet (6).
6. The greenhouse of claim 3, wherein the greenhouse is used for low-temperature seasonal dam concrete pouring, and is characterized in that: the upper-layer sliding mechanism and the lower-layer sliding mechanism respectively comprise a motor (104), a transmission mechanism, a driving transmission roller (105) and a driven transmission roller (106), the driving transmission roller (105) and the driven transmission roller (106) are symmetrically arranged on the inner sides of the two slide rails, and the motor (104) is in transmission connection with the driving transmission roller (105) through the transmission mechanism; the transmission mechanism comprises a driving gear (107), a transmission gear (108) arranged on the rotating shaft of each driving transmission roller (105), a first transmission belt (109) connecting the driving gear (107) with the output shaft of the motor (104) and a second transmission belt (110) connected with a plurality of transmission gears (108), wherein the driving gear (107) is arranged on the rotating shaft of one or more driving transmission rollers (105); the two sides of the upper sliding cover (102) and the lower sliding cover (103) are respectively provided with a first sliding chute (111) matched with the driving transmission roller (105) and a second sliding chute (112) matched with the driven transmission roller (106), the upper sliding cover (102) is respectively in sliding connection with the driving transmission roller (105) and the driven transmission roller (106) on the inner side of the upper sliding rail (100) through the sliding chutes on the two sides, and horizontally moves along the upper sliding rail (100) under the action of an upper motor and a transmission mechanism; the lower sliding cover (103) is respectively connected with a driving conveying roller (105) and a driven conveying roller (106) on the inner side of the lower sliding rail (101) in a sliding mode through sliding grooves on two sides, and moves horizontally along the lower sliding rail (101) under the action of a lower motor and a transmission mechanism.
7. The greenhouse of claim 3, wherein the greenhouse is used for low-temperature seasonal dam concrete pouring, and is characterized in that: the upper sliding cover (102) and the lower sliding cover (103) are rock wool color steel sandwich plates, the lengths of the upper sliding cover (102) and the lower sliding cover (103) are equal, and the length of the upper sliding cover is 1/2 of the length of the sliding rail.
8. A low-temperature seasonal dam concrete pouring method is characterized by comprising the following steps: the method is used for pouring by using the greenhouse for pouring dam concrete in low-temperature seasons as defined in any one of claims 1 to 7, and comprises the following specific steps:
s1: manufacturing a greenhouse support and a sliding open-type top cover with corresponding sizes according to the size of the dam section, fixedly installing the sliding open-type top cover at the top of the greenhouse support, directly and fixedly installing the assembled greenhouse support at the dam section of the concrete to be poured, or installing the greenhouse support in the dam section area of the concrete to be poured; the bottom of a vertical column support at the lower part of the greenhouse support is riveted on the ground, and the assembled greenhouse completely shields a dam section of concrete to be poured;
s2: installing a fan heater and a spraying device on a supporting frame at the top of the greenhouse, installing flexible heat-insulating tarpaulins on the front, the rear, the left and the right surfaces of a greenhouse support, enclosing the four surfaces of the greenhouse support through the heat-insulating tarpaulins, and respectively arranging an access door on the front side and the rear side of the greenhouse support, wherein the height of the flexible heat-insulating tarpaulins is suitable for different casting heights;
s3: after the greenhouse is erected, concrete pouring is started, concrete pouring is carried out in layers, pouring of concrete in each layer is completed by directly vertically entering a concrete suspension tank into the greenhouse from the top of the greenhouse, the interior of the greenhouse is heated through a fan heater in the pouring process, and meanwhile, a spraying device is started to humidify the interior of the greenhouse, so that the temperature and the humidity in the greenhouse meet the concrete pouring requirements; before the concrete suspension tank enters each time, controlling an upper sliding cover and a lower sliding cover of a sliding open type top cover corresponding to a suspension tank entering area to move to one side of a sliding rail, overlapping to expose an opening with the size matched with that of the concrete suspension tank, vertically entering the suspension tank into a greenhouse through the opening to pour concrete, and embedding a lower upright support into the concrete in the pouring process;
s4: repeating the step S3 until the concrete embedding height is close to the connection part of the lower upright post support and the upper upright post support, removing the connecting component between the lower upright post support and the upper upright post support when the newly-poured concrete is hardened to a certain degree, integrally lifting the upper part of the greenhouse by using a cable crane, connecting a new lower upright post support at the top of the lower upright post support embedded in the concrete, and then connecting the lifted upper upright post support with the new lower upright post support through the connecting component;
s5: and repeating the step S3 and the step S4 to finish the concrete pouring work of the whole dam section.
9. The method for pouring concrete into a dam in a low-temperature season as claimed in claim 8, wherein: in the step S3, a plurality of temperature probes are arranged at the top in the greenhouse, a plurality of cameras are arranged on two sides of a sliding opening type top cover of the greenhouse, and a control system is arranged outside the greenhouse; in the concrete pouring process, the temperature in the greenhouse is sensed through a temperature probe, a sensing signal is transmitted to a control system, and the control system controls the air volume of the fan heater and the temperature of hot air to automatically adjust the temperature in the greenhouse; the position of the concrete bucket in the warehouse is monitored through the camera, signals are transmitted to the control system, and the control system controls the sliding opening of the upper sliding cover and the lower sliding cover of the sliding opening type top cover at the corresponding positions.
10. The method for pouring concrete on a dam in a low-temperature season as claimed in claim 8, wherein: the upright post bracket in the step S1 comprises two rows of upright posts which are distributed at equal intervals, the two rows of upright posts are symmetrically arranged at two sides of a dam section of concrete to be poured, the bottom of each upright post is riveted on the ground, and the upright posts are arranged at intervals and vertical to the axis direction of the dam; and S2, the height of the flexible heat-insulation tarpaulin in the step S2 is greater than that of the upright post support, the upper part of the flexible heat-insulation tarpaulin is fixed on the upper upright post support, the lower part of the flexible heat-insulation tarpaulin directly covers the outer part of the lower upright post support, and the flexible heat-insulation tarpaulin rises along with the upper upright post support in the lifting process of the upright post support.
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| CN202111486260.0A CN114108633B (en) | 2021-12-07 | 2021-12-07 | Greenhouse for dam concrete pouring in low-temperature season and pouring method |
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| CN202111486260.0A CN114108633B (en) | 2021-12-07 | 2021-12-07 | Greenhouse for dam concrete pouring in low-temperature season and pouring method |
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| CN2908103Y (en) * | 2006-05-26 | 2007-06-06 | 中交第二航务工程局有限公司 | Open type air conditioning warm shed curing room |
| KR102330312B1 (en) * | 2020-03-11 | 2021-11-24 | 삼목에스폼 주식회사 | Apparatus for installing concrete curing membrane |
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Effective date of registration: 20230707 Address after: 430010 No. 23 Huangpu street, Jiang'an District, Hubei, Wuhan Patentee after: CHANGJIANG RIVER SCIENTIFFIC Research Institute OF CHANGJIANG WATER RESOURCES COMMISSION Patentee after: Yebatan branch of Huadian Jinshajiang Upstream Hydropower Development Co.,Ltd. Address before: 430010 No. 23, Huangpu Avenue, Wuhan, Hubei Patentee before: CHANGJIANG RIVER SCIENTIFFIC Research Institute OF CHANGJIANG WATER RESOURCES COMMISSION |
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