CN106812122B - Hydraulic self-lifting cantilever heavy formwork - Google Patents
Hydraulic self-lifting cantilever heavy formwork Download PDFInfo
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- CN106812122B CN106812122B CN201710170994.5A CN201710170994A CN106812122B CN 106812122 B CN106812122 B CN 106812122B CN 201710170994 A CN201710170994 A CN 201710170994A CN 106812122 B CN106812122 B CN 106812122B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/08—Wall dams
- E02B7/12—Arch dams
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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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- 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
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
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Abstract
The invention provides a hydraulic self-lifting cantilever heavy template, which comprises a stress tripod and a hydraulic climbing system connected with the stress tripod, wherein a template device is movably arranged on the stress tripod; the construction bin comprises a plurality of stress tripods, wherein the stress tripods and the template device are arranged along the surface of the construction bin, and the stress tripods are fixedly connected with each other through a plurality of tripod connecting cross beams; in the template device, a plurality of transverse wails are arranged on the back surface of a template and connected with longitudinal wails, the longitudinal wails are connected with one end of a sliding rod piece through an adjustable shaft lever of the template, the other end of the sliding rod piece is connected with the bottom of the longitudinal wails through a connecting module, and the connecting module is connected with a stress tripod; the sliding rod piece is also connected with the top of the stress tripod through a telescopic driving device. Through adopting unique demolding compound die structure, can conveniently found the mould and the drawing of patterns, the position of the pole end is hung in the regulation that can be convenient to connect with the anchor awl, with the complicated curved surface shape that adapts to the arch dam.
Description
Technical Field
The invention relates to an arch dam construction template, in particular to a hydraulic self-lifting cantilever heavy template.
Background
For a long time, the formworks for pouring the arch dam concrete are all crane lifting type common dam formworks, and the formwork system can meet the requirement of arch dam concrete construction in a common construction environment. However, once the arch dam is in a long-term strong wind environment or the hoisting means is insufficient, the construction safety and the construction efficiency of the common dam template greatly affect the concrete construction operation of the arch dam. The automatic climbing dam template technology can well solve the problems of the common dam template. However, the automatic climbing formwork technology requires that the formwork panel surface is separated from the concrete surface by a certain distance (about 300 mm) in the climbing process so as to facilitate the climbing guide rail to climb to the position first and then integrally climb the formwork and the platform. The structural characteristics of the arch dam determine that the structure of the arch dam has large change of a front-back inclination angle from bottom to top, as shown in fig. 1, the die assembly and the die release of the template in the concrete construction process are all completed on a plane with a large inclination angle, and the conventional structure of the existing dam template cannot meet the die assembly and die release requirements in the automatic climbing dam template construction process.
Chinese patent document CN 102345381 a describes a hydraulic creeping formwork system and a creeping formwork construction method thereof, which are characterized in that: the climbing system is composed of 4 machine positions and climbing devices attached to the surface of a wall body, the machine positions are arranged on the lateral sides of a transverse bridge, templates, template moving supports, working platforms, hydraulic power devices, hydraulic platforms and modification platforms are arranged on the machine positions from top to bottom, the longitudinal bridge lateral sides are not provided with the machine positions and are only provided with the templates, the template moving supports and the working platforms, people passing channels connected with the climbing face hydraulic platforms, and the templates and the working platforms on the longitudinal bridge lateral sides are driven by the 4 machine positions on the transverse bridge to climb together during climbing. However, the structure of the invention is mostly used for columns, piers or wall-clamping structures with small thickness, the overall strength of the creeping formwork is not high, and the surrounding of the creeping formwork is required to be provided with bent frames for reinforcement. Chinese patent document CN 103635643B also has the same problem, and needs to be fixed by using multiple wall-through tie rods.
For the construction of the arch dam, the bent frames are difficult to arrange for fixation, a fixing structure of the pull rods cannot be adopted, the requirement on the whole formwork climbing system is very high only by fixing the anchor bars and the anchor cones, and because the surface of the arch dam is not a plane and the height of the arch dam is greatly changed by inclining forwards and backwards, more fine adjustment can be carried out on members of the frame body in the construction process. This also puts higher demands on the design of the entire creeper form.
Disclosure of Invention
The invention aims to solve the technical problem of providing a hydraulic self-lifting cantilever heavy formwork which can carry out self-lifting pouring construction on concrete of an arch dam by using a climbing formwork. The anchor bars and the anchor cones are convenient to embed and install, the whole climbing formwork device can be conveniently and reliably fixed, and the fine adjustment of partial components can be carried out to adapt to the complex curved surface structure of the arch dam.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a heavy template of cantilever is lifted certainly to hydraulic pressure, includes the atress tripod, climbs a system, characterized by with the hydraulic pressure that the atress tripod is connected: a template device is movably arranged on the stress tripod;
the construction bin comprises a plurality of stress tripods, the stress tripods and a template device are arranged along the surface of the construction bin, and the stress tripods are fixedly connected with a cross beam through a plurality of tripods; in the template device, a plurality of transverse wails are arranged on the back surface of a template and connected with longitudinal wails, the longitudinal wails are connected with one end of a sliding rod piece through an adjustable shaft lever of the template, the other end of the sliding rod piece is connected with the bottom of the longitudinal wails through a connecting module, and the connecting module is connected with a stress tripod;
the sliding rod piece is also connected with the top of the stress tripod through a telescopic driving device.
In a preferable scheme, the connecting module is provided with a horizontally arranged long circular groove, and the bottom of the longitudinal wailing is connected with the long circular groove in a sliding manner through a sliding pin;
the bottom of longitudinal wailing is also connected with a demoulding pull rod, a first wedge-shaped groove and a second wedge-shaped groove are formed in the demoulding pull rod and the connecting module, and a wedge-shaped plate is inserted into the first wedge-shaped groove or the second wedge-shaped groove, so that the longitudinal wailing moves towards the direction of the template, or the longitudinal wailing moves in the direction opposite to the template.
In the preferred scheme, the top of the stress tripod is movably provided with suspension rods, one end of each suspension rod, which is close to the template, is fixedly connected with the anchor cone bolt suspension plate, one side of the anchor cone bolt suspension plate, which is close to the template, is provided with an inverted U-shaped connection hole for connecting an anchor cone, the other end of each suspension rod is connected with a tripod connection beam through a fine adjustment screw, and the distance between the connection hole and the anchor cone is adjusted through the fine adjustment screw.
In the preferred scheme, the suspension rod is formed by welding two I-shaped steels or channel steel back to back, a gap is formed between the two I-shaped steels or channel steel, and the pressing plate is fixedly connected with the tripod connecting beam and presses the edge of the suspension rod, so that the suspension rod slides along the top of the stressed tripod.
Preferably, the connection module is slidably located in the gap of the suspension rod and is provided with a stop means so that the connection module can only slide along the suspension rod.
In a preferable scheme, the bottom of the connecting module is provided with a plurality of connecting module pin holes, the suspension rod is correspondingly provided with a plurality of suspension rod pin holes, and the connecting module pin holes are connected with the suspension rod pin holes through pins.
In the preferred scheme, the telescopic driving device is a hydraulic cylinder, one end of the hydraulic cylinder is fixedly connected with the suspension rod, and the other end of the hydraulic cylinder is fixedly connected with the sliding rod piece.
In a preferred scheme, the connecting module and the sliding rod piece are provided with rollers, and the rollers roll along the upper surface of the suspension rod.
In the preferred scheme, the bottom supporting leg of the stress tripod is an adjustable structure so as to change the angle of each triangle of the stress tripod according to the dam body;
the supporting leg connected with the bottom of the tripod of the climbing frame also adopts an adjustable structure.
In the preferred scheme, a plurality of platforms for construction are further arranged, and the platforms adopt a connection structure capable of being leveled.
In the preferred scheme, a plurality of platforms for construction are further arranged, and the platforms adopt a connection structure capable of being leveled.
The hydraulic self-lifting cantilever heavy template provided by the invention can be used for conveniently erecting and demoulding a mould by adopting a unique mould withdrawing and closing structure, the whole climbing mould can be reliably fixed by the arranged stress tripod, and the whole template device can be conveniently moved back and forth by the telescopic driving device. The connecting module and the demoulding pull rod are arranged and matched with the wedge-shaped plate, so that the template can be conveniently separated from the concrete surface, and the concrete surface is prevented from being damaged. The adjustable shaft lever of the template can further separate the template from the concrete surface during demoulding. The structure that adopts suspension rod and atress tripod swing joint, the fine setting screw rod that the cooperation set up, the position of the regulation suspension rod end that can be convenient to be connected with the anchor awl, in order to adapt to the complicated curved surface shape of arch dam. Further preferably, the truss type longitudinal wailing is adopted for the longitudinal wailing, the truss type longitudinal wailing is of a fixing structure with a plurality of triangles, the concrete building quality can be guaranteed, if the pouring quality cannot be guaranteed, namely the template is deformed and runs out of the template, the installation quality of the near 9m long guide rail cannot be guaranteed, the arch dam template cannot climb automatically, and only lifting equipment can be used for lifting the template. The concrete pouring device has the advantages that the strength is higher under the condition of the same structure and weight, so that the height of the template can be increased, the pouring height of each bin of concrete is increased, the pouring efficiency is improved, the construction progress of the dam is accelerated, and the engineering construction period is shortened. Further preferably, the formwork support body and each layer of operation platform are in an adjustable system form, the characteristics of the structure size of the arch dam are adapted, construction personnel can conveniently stay on a horizontal working surface when the platform operates, and safety of the construction personnel is guaranteed.
Drawings
The invention is further illustrated with reference to the following figures and examples:
fig. 1 is a schematic view of the cross-sectional arrangement of an arch dam in the process of pouring the arch dam according to the present invention.
Fig. 2 is a schematic view of the horizontal cross-section arrangement of the arch dam in the arch dam casting process according to the present invention.
Fig. 3 is a partially enlarged view of a portion a in fig. 1.
Fig. 4 is a partially enlarged view of a portion a in fig. 1.
Fig. 5 is a partially enlarged view of a connection module according to the present invention.
Fig. 6 is a schematic top view of a connection module of the present invention.
FIG. 7 is a schematic view showing the structure of the entire mold stripping and clamping apparatus of the present invention.
Fig. 8 is a schematic top view of the mounting structure of the suspension bar according to the present invention.
Fig. 9 is a view from direction B of fig. 8.
Fig. 10 is a partially enlarged schematic view at C in fig. 8.
FIG. 11 is a schematic view of the construction steps of the present invention.
In the figure: the formwork climbing device comprises a climbing formwork 1, a formwork device 10, a formwork 101, transverse wails 102, truss type longitudinal wails 103, a formwork adjustable shaft rod 104, a connecting module 105, an elongated circular groove 1051, a roller 1052, a connecting module pin hole 1053, a sliding pin 1054, a wedge-shaped plate 1055, a connecting module shoe 1056, a second wedge-shaped groove 1057, a first wedge-shaped groove 1058, a demoulding pull rod 1059, a platform leveling pull rod 106, a force-bearing bracket 107, a suspension rod 108, a suspension rod pin hole 1081, a suspension rod connecting plate 1082, a hydraulic cylinder 109, a fine adjustment screw 110, a tripod connecting cross beam 111, a pressing plate 112, a sliding rod 113, an anchor cone bolt suspension plate 114, a fourth platform 11, a climbing frame triangular frame tripod 12, a first platform 13, a second platform 14, a hydraulic climbing frame system 15, a hanging shoe 151, a climbing frame hydraulic cylinder 152, a climbing frame guide rail 153, a bearing anchor cone 16, a climbing anchor cone 17, a wind-resistant pull rod 18, a third platform 19 and a dam body 2.
Detailed Description
As shown in fig. 1 to 11, a heavy formwork of a hydraulic self-elevating cantilever comprises a stress tripod 107 and a hydraulic climbing system 15 connected to the stress tripod 107, wherein the stress tripod 107 is formed by fixedly connecting a cross bar, a vertical bar and an inclined bar, the cross bar is located at the top, as shown in fig. 3 and 4, the hydraulic climbing system 15 connected to the stress tripod 107 is provided with a plurality of hanging shoes for connecting to an anchor cone, an H-shaped climbing guide rail and a climbing hydraulic cylinder 152, and the climbing system is a prior art, for example, the climbing system described in chinese patent document CN 102345381 a.
The template device 10 is movably arranged on the stress tripod 107; the stress tripods 107 are multiple, the stress tripods 107 and the template device 10 are arranged along the construction cabin surface, and the stress tripods 107 are fixedly connected through a plurality of tripod connecting cross beams 111; with this structure, the formwork 101 is arranged along the concrete construction deck, thereby facilitating the concrete pouring construction of the entire deck, as shown in fig. 2. Different from the prior art, the hydraulic self-elevating cantilever heavy formwork is a cantilever supporting structure, and is not a counter-pulling fixing structure in the prior art, so that higher requirements are provided for self-elevating, reliable suspension fixing and anti-template-running correction of the hydraulic self-elevating cantilever heavy formwork.
In the template device, a plurality of transverse wails 102 are arranged on the back surface of a template 101, the transverse wails 102 are connected with longitudinal wails, the longitudinal wails are connected with one end of a sliding rod member 113 through an adjustable shaft rod 104 of the template, the other end of the sliding rod member 113 is connected with the bottom of the longitudinal wails through a connecting module 105, and the connecting module 105 is connected with a stress tripod 107; preferably, the longitudinal wails are truss type longitudinal wails, and the strength is higher under the same weight. Due to the fact that the truss type longitudinal wailing structure is adopted, the back face of the truss type longitudinal wailing is connected with the template adjustable shaft rod 104, and the connecting point of the truss type longitudinal wailing structure and the template adjustable shaft rod 104 is closer to the back, the length of the template adjustable shaft rod 104 is favorably reduced, and supporting strength is improved.
The die plate adjustable shaft 104 is typically a twin screw and threaded sleeve arrangement, with the threaded sleeve being rotated to adjust the length of the entire die plate adjustable shaft 104.
The sliding rod member 113 is also connected with the top of the force-bearing tripod 107 through a telescopic driving device. By adopting the structure, the stable stress tripod 107 is used as a supporting foundation of the whole template, and the reliability is improved. The sliding structure of the whole template device 10 can enable the whole template device 10 to retreat backwards by about 30-40 cm after demoulding, so that the climbing guide rail can conveniently climb to be in place firstly.
In a preferred scheme, the connecting module 105 is provided with a horizontally arranged long circular groove 1051, and the bottom of the longitudinal wailing is connected with the long circular groove 1051 in a sliding manner through a sliding pin 1054; with the structure, when demoulding, the bottom of the longitudinal wailing is firstly retreated within the stroke range of the long circular groove 1051 by a certain distance, for example, 3cm, so that the lower end of the formwork 101 is separated from the concrete surface, and when the subsequent process of shortening the adjustable shaft lever 104 of the formwork, the lower end of the formwork 101 cannot damage the concrete surface and is easy to separate.
The bottom of longitudinal wailing is also connected with a demoulding pull rod 1059, the demoulding pull rod 1059 and the connecting module 105 are provided with a first wedge-shaped groove 1058 and a second wedge-shaped groove 1057, and a wedge-shaped plate 1055 is inserted into the first wedge-shaped groove 1058 or the second wedge-shaped groove 1057, so that the longitudinal wailing is moved towards the template 101, or the longitudinal wailing is moved in a direction opposite to the template 101. In this example, when the wedge plate 1055 is inserted into the first wedge-shaped groove 1058, and the wedge plate 1055 is hit, under the action of the wedge plate 1055, as shown in fig. 6, the wedge plate 1055 pushes the stripping pull rod 1059 to move towards the formwork, so that the formwork 101 is close to the concrete silo surface, and formwork erection is realized. When the wedge-shaped plate 1055 is inserted into the second wedge-shaped groove 1057, the wedge-shaped plate 1055 is knocked, and under the action of the wedge-shaped plate 1055, the wedge-shaped plate 1055 pushes the demolding pull rod 1059 to move towards the direction far away from the formwork, so that the formwork 101 is separated from the concrete surface, and demolding is realized.
In a preferable scheme, suspension rods 108 are movably mounted at the top of the stress tripod 107, one end, close to the template 101, of each suspension rod 108 is fixedly connected with an anchor cone bolt suspension plate 114, one side, close to the template 101, of the anchor cone bolt suspension plate 114 is provided with an inverted U-shaped connection hole for connecting an anchor cone, when the suspension rod suspension plate is connected with a bearing anchor cone 16, the inverted U-shaped connection hole of the anchor cone bolt suspension plate 114 is hung on the anchor cone bolt, the other end of each suspension rod 108 is provided with a suspension rod connection plate 1082, the suspension rod connection plate 1082 is connected with a tripod connection beam 111 through a fine adjustment screw 110, and the distance between the inverted U-shaped connection hole and the anchor cone is adjusted through the fine adjustment screw 110. With the structure, the hanging rod 108, the anchor taper bolt hanging plate 114 and the template device 10 are integrally moved backwards by 10-20 mm by adjusting the fine adjustment screw 110. To allow room for the climbing of the hydraulic climbing frame system 15 and the template device 10.
As shown in fig. 8 and 10, a suspension rod connecting plate 1082 is arranged between two channel steels of the suspension rod 108, one end of the fine tuning screw 110 is fixedly connected with the tripod connecting beam 111 through a nut, the other end of the fine tuning screw 110 passes through the suspension rod connecting plate 1082 to be connected with an adjusting nut, and when the suspension rod 108 is separated from the anchor cone and the adjusting nut is screwed, the whole suspension rod 108 moves backwards; when the climbing device is in place, the adjusting nut is loosened, the hook of the suspension rod 108 is connected with the bolt on the anchor cone, and then the adjusting nut is screwed down, so that the suspension rod 108 is reliably and fixedly connected with the bolt on the anchor cone.
In a preferred scheme, as shown in fig. 9, the suspension rod 108 is formed by welding two i-shaped steels or channel steels back to back, a gap is formed between the two i-shaped steels or channel steels, and the pressing plate 112 is fixedly connected with the tripod connecting beam 111 and presses the edge of the suspension rod 108, so that the suspension rod 108 slides along the top of the stressed tripod 107. With this structure, the suspension rod 108 can slide back and forth, thereby making the climbing space of the hydraulic climbing frame system 15 available. The whole climbing of the restraint formwork can be avoided when the concrete surface touches the front end of the suspension rod 108 after the concrete is poured and runs out of the formwork.
Preferably, as shown in FIG. 7, the connection module 105 is slidably positioned in the gap of the hanging bar 108 and is provided with a stop means so that the connection module 105 can only slide along the hanging bar 108. As shown in fig. 9, the limiting means is a slotted plate hooked on both wings of the top of the i-beam or channel to limit the connection module 105 from being detached from the hanging bar 108. Preferably, a stop means is also provided at the end of the sliding bar 113 remote from the connection module 105.
In a preferred embodiment, as shown in fig. 3, 4 and 7, the bottom of the connecting module 105 is provided with a plurality of connecting module pin holes 1053, the suspension rod 108 is correspondingly provided with a plurality of suspension rod pin holes 1081, and the connecting module pin holes 1053 are connected with the suspension rod pin holes 1081 through pins. Thereby being constructed for connecting and disconnecting the connection module 105 to and from the suspension bar 108.
Preferably, as shown in fig. 3, 4 and 8, the telescopic driving device is a hydraulic cylinder 109, one end of the hydraulic cylinder 109 is fixedly connected with the suspension rod 108, and the other end of the hydraulic cylinder 109 is fixedly connected with the sliding rod 113. With the structure, when the piston rod of the hydraulic cylinder 109 extends out, the sliding rod piece 113 is pushed to move backwards to realize demoulding, and when the piston rod of the hydraulic cylinder 109 retracts, the sliding rod piece 113 moves forwards to realize mould erecting.
In the preferred embodiment shown in fig. 3 and 4, the connecting module 105 and the sliding bar member 113 are provided with rollers 1052, and the rollers 1052 roll along the upper surface of the hanging bar 108. With this structure, the resistance to the movement of the entire template device 10 is reduced.
In the preferred scheme, the bottom supporting leg of the stress tripod 107 is an adjustable structure, in this example, a structure which is adjusted by matching a plurality of pin holes at different positions with pins is adopted, so that the angle of each triangle of the stress tripod 107 is changed adaptively according to the dam body 2;
the supporting leg of the stress tripod 107 connected with the bottom of the hydraulic climbing frame system 15 adopts an adjustable structure. By the structure, the stress and climbing requirements of the template are better met.
In the preferred scheme, a plurality of platforms for construction are further arranged, and the platforms adopt a connection structure capable of being leveled. As shown in fig. 3, a first platform 13, a second platform 14, a third platform 19 and a fourth platform 11 are sequentially arranged from top to bottom, each platform is provided with an adjustable support structure, for example, the structure of a platform leveling pull rod 106, the platform leveling pull rod 106 is a structure of a double screw and a threaded sleeve, and the length of the whole platform leveling pull rod 106 is adjusted by rotating the threaded sleeve, so that each platform is kept horizontal, construction of constructors on a horizontal plane is facilitated, related construction equipment is also facilitated to be placed, and safety of the constructors is ensured.
The mold stripping process adopting the invention comprises the following steps:
when the concrete pouring is completed and the strength specified for demolding is reached, demolding may be started. The specific operation flow is as follows:
1. inserting the wedge-shaped plate 1055 on the connecting module 105 into the second wedge-shaped groove 1057, knocking the wedge-shaped plate 1055, and enabling the bottom of the template 101 to be 10-20 mm away from the concrete surface;
2. rotating the adjustable shaft lever 104 of the template, and enabling the upper opening of the template to be 10-20 mm away from the concrete surface;
3. removing the connection pin between the connection module 105 and the suspension bar 108;
4. starting a central pump station power supply of the hydraulic cylinders 109, wherein about 20 hydraulic cylinders 109 of the whole bin surface can be grouped or simultaneously extended, the sliding rod members 113 are extended backwards in a propping manner, and the whole template device 10 moves backwards for a distance of about 30-40 cm along the direction vertical to the concrete surface;
5. the pins between the connection module 105 and the suspension bar 108 are mounted in place;
6. according to the actual situation of curve change in the height direction of the arch dam, whether the fine adjustment screw 110 needs to be adjusted or not is determined, so that the whole suspension rod 108 moves backwards by 10-20 mm.
Thus, the whole demolding process is completed.
Mold closing process
The mold closing process is basically the reverse operation of the mold stripping process, and the specific operation process is as follows:
1. if the fine adjustment screw 110 is adjusted during the demolding, the fine adjustment screw needs to be rotated reversely until the suspension rod 108 can be fixed on the pre-embedded anchoring point, such as the bearing anchor cone 16;
2. removing the pins between the connection module 105 and the suspension bar 108;
3. and starting the central pump station of the hydraulic cylinders 109, wherein about 20 hydraulic cylinders 109 on the whole warehouse surface can be grouped or simultaneously contracted, pulling the sliding rod member 113, and closing the power supply of the central pump station after the whole template device 10 moves for a certain distance in the direction vertical to the concrete surface.
4. The pins between the connection module 105 and the suspension bar 108 are mounted in place;
5. inserting a wedge-shaped plate 1055 on the connecting module 105 into the first wedge-shaped groove 1058, knocking the wedge-shaped plate 1055 to enable the bottom of the formwork to be tightly pressed against the concrete surface;
6. the template adjustable shaft 104 is rotated to adjust the template verticality.
And finishing the whole mold closing process.
With the overall construction method of the present invention, as shown in fig. 11:
according to the design parting, pour the block composition by a plurality of on the arch dam plane, high successive layer pour rise, single pouring piece, the equal erection template of upper and lower reaches face and both sides horizontal joint face of pouring the piece earlier promptly, later pour a piece both sides horizontal joint face and need not the erection template, its concrete step is:
the method comprises the following steps: the method comprises the following steps of installing a first-layer template by adopting an upper template system of a large steel template or a self-elevating cantilever template, embedding a first-layer bearing anchor cone and a first-layer climbing anchor cone, and pouring first-layer concrete after the procedures in a bin are finished.
Step two: the first-layer template is dismantled, the first-layer bearing anchor cone and the connecting bolt are used as hanging points, and the template system of the self-elevating cantilever template is adopted, so that the hydraulic climbing frame system 15 and the platform system are not included because the height of poured concrete cannot meet the requirement. And installing a second layer of template, embedding a second layer of bearing anchor cone and a second layer of climbing anchor cone, and pouring second layer concrete after the working procedure in the bin is finished.
Step three: the second layer of template is lifted to a third layer to be poured by using a second layer of bearing anchor cone 16 and connecting bolts as suspension points, a hydraulic climbing frame system 15 is installed, a construction platform system is installed, such as a first platform 13, a second platform 14, a third platform 19 and a fourth platform 11, suspension boots are respectively installed at the first layer of climbing anchor cone and the second layer of climbing anchor cone, climbing frame guide rails 153 sequentially penetrate into the second layer of suspension boots, the first layer of suspension boots, the climbing frame guide rails 153 are connected with an SKE50 climbing device in a matching mode from top to bottom, the third layer of bearing anchor cone and the third layer of climbing anchor cone are buried, and the third layer of concrete is poured after the procedure in a bin is completed.
Step four: and (4) withdrawing the template system of the hydraulic self-elevating cantilever template on the third pouring layer.
1. And taking out the connecting bolt matched with the third layer bearing anchor cone and the third layer climbing anchor cone on the back surface of the template panel, wherein the link is to remove the constraint of the template panel and the anchor cone pre-embedded in the concrete.
2. And (4) removing the seam splicing plate between the two templates on the upstream and downstream surfaces. The joint plates are characterized in that the arch dam is usually designed to be a hyperbolic arch dam, the curvatures of a dam body in the vertical and horizontal directions are constantly changed, the size of a vertical gap between an upstream face template and a downstream face template is increased and then reduced along with the rising of the dam body, and a V-shaped gap and an inverted V-shaped gap can be formed between the template units; the splicing plates are arranged between the template units for convenient construction, and the width of the splicing plates can be adjusted according to the change requirement.
3. The bottom opening of the template is separated from the concrete surface by the mold stripping step; the adjustable shaft lever 104 of the template is adjusted to make the whole template device 10 separate from the concrete surface by 10-20 mm. The truss type longitudinal wailing 103 improves the strength and rigidity of the template and ensures the quality and precision of a concrete pouring model with pouring height of 4.5m, so that the flatness of the guide rail after the guide rail is in place is ensured, and the climbing formwork can climb smoothly as a whole.
4. The hydraulic circuit of the hydraulic cylinder 109 is installed so that the whole formwork apparatus 10 is detached from the concrete surface by about 400mm, and the pin connecting the module and the suspension rod 108 is restored.
5. And (4) installing a connecting bolt and a hanging boot at the third layer of climbing anchor cone at the upper opening of the template.
6. And a hydraulic oil circuit of the hydraulic climbing frame system 15 is installed, and the climbing frame guide rail 153 climbs to the hanging shoe of the third-layer climbing anchor cone 17. The climbing frame rail 153 climbs into place in preparation for the step five template climbing.
7. The wind-resistant tie-rods 18 of the formwork are removed. The wind-resistant pull rod is used for increasing the stability of the template in a strong wind environment, and the constraint of the template is removed by removing the wind-resistant pull rod.
8. The adjustable legs of the climbing frame tripod 12 are contracted to be separated from the concrete surface.
9. And (4) removing the first-layer bearing anchor cone and the connecting bolt of the concrete surface corresponding to the fourth platform 11, and the first-layer climbing anchor cone and the connecting bolt. The anchoring piece can be used in the upper bin position in a turnover mode, and the phenomenon that the work load is increased due to the fact that the later dam body is poured to the top and then is detached is avoided.
Step five: the hydraulic self-lifting cantilever heavy formwork and the frame body on the third pouring layer integrally climb to the fourth pouring layer to be poured.
1. Starting the hydraulic climbing frame system 15, climbing the whole heavy template of the hydraulic self-elevating cantilever by 150mm, and dismantling the connecting bolt of the bearing anchor cone on the second layer; and adjusting the fine adjustment screw rod 110 to enable the suspension rod 108 and the template device to integrally move backwards by 10-20 mm. Therefore, the gap between the front end of the suspension rod 108 and the concrete is increased, and smooth climbing of the template is ensured.
2. And starting the hydraulic climbing frame system 15, climbing the whole hydraulic self-lifting cantilever heavy template to the position 150mm above the third layer bearing anchor cone, and installing a connecting bolt.
3. And adjusting the fine adjustment screw rod 110, and integrally moving the suspension rod 108 and the template device 10 forward by 10-20 mm to enable the distance between the front end of the suspension rod 108 and the concrete surface to be 10-20 mm.
4. The hydraulic climbing system 15 is started, and the hydraulic self-lifting cantilever heavy formwork and the whole frame body fall down, so that the hook at the front end of the suspension rod 108 is clamped on the screw rod of the connecting bolt of the third layer bearing anchor cone.
Step six: and (4) template die assembly and operation platform leveling of the hydraulic self-lifting cantilever heavy template of the layer to be poured.
1. The diagonal platform leveling braces 106 of each platform are adjusted to level the platform.
2. The adjustable legs of the lower support of the formwork are extended to be close to the concrete surface.
3. And installing a connecting bolt of a second layer bearing anchor cone and a template wind-resistant pull rod.
4. And finishing the mold closing process.
Template adjustable shaft 104 is adjusted to position the template panel at the design edge line position.
5. And a fourth layer of bearing anchor cone and connecting bolt at the upper opening of the mounting template and a fourth layer of climbing anchor cone and connecting bolt.
6. And a seam splicing plate between the two templates on the upper and lower surfaces is installed.
Step seven: and after the work of the spare bin in the bin is finished and the check is accepted, pouring a fourth layer of concrete.
Step eight: and repeating the fourth step to the seventh step to finish the fifth layer of concrete pouring, and repeating the steps until the arch dam is poured to the designed height.
The maximum pouring height of the template 101 is 4.5m, and the width of a single standard template is 3 m; the upper and lower surfaces of the arch dam are composed of a plurality of templates, and seam splicing plates are arranged among the templates to adapt to the change of the body-shaped curved surface of the arch dam; the arch dam transverse seam surface consists of a plurality of templates. The semicircular key groove template is fixed on the panel of the transverse seam surface template, so that the requirement of the transverse seam surface structure of the arch dam is met.
The single template is provided with 2 stress tripods 107, and the middle parts of the 2 stress tripods 107 are provided with the hydraulic climbing system 15. The structure system solves the problems that the template is not required to be reinforced by the tie bars, and reduces the work load and the manual work load of the tie bars; secondly, the problem of climbing the cantilever template is solved. The stress tripod 107 and the climbing frame system form independent systems respectively, exert respective functions, are tightly matched without mutual interference, and form an integral structure through the formwork body and each layer of operating platform.
In the fourth step, the power supply of the central pump station of the hydraulic cylinders 109 is started, all the hydraulic cylinders 109 on the whole cabin surface can be grouped or simultaneously operated, and the single-block, single-side or four-side template panels and the truss type longitudinal wails 103 can be separated from the concrete surface or move towards the cabin interior.
The climbing of the climbing rail 153 includes an extending movement (idle stroke) of the climbing cylinder 152 and a retracting movement (operating stroke) of the hydraulic cylinder 109. At the moment, the whole climbing frame system is anchored on the concrete wall surface by using the hanging shoes, and the control handles of the upper lifting device and the lower lifting device are arranged at the position of the upper guide rail; the climbing frame guide rail 153 is engaged and fixed in position with the upper lifting device of the hydraulic climbing frame system 15, and the climbing frame hydraulic cylinder 152 drives the lower lifting device to extend downwards until the lower lifting device is embedded into the square groove of the climbing frame guide rail 153; the lower lifting device is meshed with the climbing frame guide rail 153 and fixed in place, the climbing frame hydraulic cylinder 152 drives the lower lifting device to contract upwards until the upper lifting device is automatically meshed with the climbing frame guide rail 153 again and fixed in place, and at the moment, the upper lifting device drives the climbing frame guide rail 153 to climb upwards; alternating actions are performed until the guide rail is climbed into place.
During climbing of the stress tripod 107 and the template device 10, initially fixing the whole climbing frame guide rail 153 on the concrete wall surface by using the hanging shoes 151 and the anchor cones, and placing control handles of the upper lifting device and the lower lifting device at the position of a lower climbing frame; the lower lifting device is meshed and fixed with the guide rail, the climbing frame hydraulic cylinder 152 drives the upper lifting device to extend upwards to drive the whole climbing frame system and the template to move upwards until the upper lifting device is meshed with the climbing frame guide rail 153 automatically again and fixed in place; the whole climbing system is fixed on a climbing guide rail 153 by the upper lifting device, and the climbing hydraulic cylinder 152 drives the lower lifting device to contract upwards for a vacant stroke until the lower lifting device is automatically meshed and fixed with the climbing hydraulic cylinder 152; the actions are alternated until the template and the stress tripod 107 are integrally climbed into position.
The operation method of the whole falling of the template and the stress tripod 107 is the reverse operation of climbing.
In the fifth step, the hydraulic frame climbing system 15 can be started in groups or at the same time, so that a single template and a frame body can climb, a single transverse seam surface or a single template and frame body on the upstream and downstream surfaces can climb, and the templates and the frame body on the four surfaces of the warehouse can climb integrally and synchronously. The templates on four sides of the bin space can be climbed quickly and integrally, only 8-10 hours are needed, the whole construction process is safe and reliable, and external environmental factors such as the influence of strong wind on the construction progress are reduced.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (7)
1. The utility model provides a heavy template of cantilever is lifted certainly to hydraulic pressure, includes atress tripod (107), climbs a system (15) with the hydraulic pressure that atress tripod (107) is connected, characterized by: a template device (10) is movably arranged on the stress tripod (107);
the stress tripods (107) are multiple, the stress tripods (107) and the template device (10) are arranged along the construction cabin surface of the dam body (2), and the stress tripods (107) are fixedly connected through a plurality of tripod connecting cross beams (111); in the template device, a plurality of transverse wails (102) are arranged on the back surface of a template (101), the transverse wails (102) are connected with longitudinal wails, the longitudinal wails are connected with one end of a sliding rod piece (113) through an adjustable shaft rod (104) of the template, the other end of the sliding rod piece (113) is connected with the bottom of the longitudinal wails through a connecting module (105), and the connecting module (105) is connected with a force-bearing tripod (107);
the sliding rod piece (113) is also connected with the top of the stressed tripod (107) through a telescopic driving device;
the top of the stress tripod (107) is movably provided with suspension rods (108), one end of each suspension rod (108), which is close to the template (101), is fixedly connected with an anchor cone bolt suspension plate (114), one side of the anchor cone bolt suspension plate (114), which is close to the template (101), is provided with an inverted U-shaped connecting hole for connecting an anchor cone, the other end of each suspension rod (108) is connected with a tripod connecting beam (111) through a fine adjustment screw (110), and the distance between the connecting hole and the anchor cone is adjusted through the fine adjustment screw (110);
the suspension rod (108) is formed by welding two back-to-back I-shaped steels or channel steels, a gap is formed between the two I-shaped steels or channel steels, and the pressing plate (112) is fixedly connected with the tripod connecting beam (111) and presses the edge of the suspension rod (108) so that the suspension rod (108) slides along the top of the stressed tripod (107);
the connection module (105) is slidably positioned in the gap of the suspension rod (108) and is provided with a limiting device so that the connection module (105) can only slide along the suspension rod (108).
2. The hydraulic self-elevating cantilever heavy formwork of claim 1, wherein: the connecting module (105) is provided with a horizontally arranged long circular groove (1051), and the bottom of the longitudinal wailing is connected with the long circular groove (1051) in a sliding manner through a sliding pin (1054);
the bottom of the longitudinal wail is also connected with a demoulding pull rod (1059), the demoulding pull rod (1059) and the connecting module (105) are provided with a first wedge-shaped groove (1058) and a second wedge-shaped groove (1057),
a wedge-shaped plate (1055) is inserted into a first wedge-shaped groove (1058) to enable longitudinal wailing to move towards the direction of the template (101); or the wedge-shaped plate (1055) is inserted into the second wedge-shaped groove (1057) to cause longitudinal wailing to move in the direction opposite to the template (101).
3. The hydraulic self-elevating cantilever heavy formwork of claim 1, wherein: the bottom of the connecting module (105) is provided with a plurality of connecting module pin holes (1053), the suspension rod (108) is correspondingly provided with a plurality of suspension rod pin holes (1081), and the connecting module pin holes (1053) are connected with the suspension rod pin holes (1081) through pins.
4. The hydraulic self-elevating cantilever heavy formwork of claim 1, wherein: the telescopic driving device is a hydraulic cylinder (109), one end of the hydraulic cylinder (109) is fixedly connected with the suspension rod (108), and the other end of the hydraulic cylinder (109) is fixedly connected with the sliding rod piece (113).
5. The hydraulic self-elevating cantilever heavy formwork of claim 1, wherein: the connecting module (105) and the sliding rod piece (113) are provided with rollers (1052), and the rollers (1052) roll along the upper surface of the suspension rod (108).
6. The hydraulic self-elevating cantilever heavy formwork of claim 1, wherein: the bottom supporting leg of the stress tripod (107) is of an adjustable structure so as to change the angle of each triangle of the stress tripod (107) according to the dam body (2).
7. The hydraulic self-elevating cantilever heavy formwork of claim 1, wherein: and a plurality of platforms used for construction are also arranged, and the platforms adopt a connection structure capable of being leveled.
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| CN201710170994.5A CN106812122B (en) | 2017-03-21 | 2017-03-21 | Hydraulic self-lifting cantilever heavy formwork |
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| CN201710170994.5A CN106812122B (en) | 2017-03-21 | 2017-03-21 | Hydraulic self-lifting cantilever heavy formwork |
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| CN106812122B true CN106812122B (en) | 2022-08-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106812120B (en) * | 2017-03-21 | 2022-09-02 | 中国葛洲坝集团三峡建设工程有限公司 | Hydraulic self-lifting truss type cantilever heavy arch dam template system |
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| CH476191A (en) * | 1967-08-12 | 1969-07-31 | Luchterhand Schalungen Kommand | Climbing formwork and procedures for its operation during concreting |
| CN2929056Y (en) * | 2005-05-25 | 2007-08-01 | 北京卓良模板有限公司 | Hydraulic driving automatic climbing formwork |
| CN201826525U (en) * | 2010-07-27 | 2011-05-11 | 南京道广建筑模板有限公司 | Climbing shuttering system device for buildings |
| CN202247894U (en) * | 2011-09-05 | 2012-05-30 | 葛洲坝集团第二工程有限公司 | Double-strut cantilever template |
| CN204475342U (en) * | 2014-12-30 | 2015-07-15 | 南京道广建筑模板有限公司 | Pile structure concrete in mass plate device |
| CN205742991U (en) * | 2016-05-02 | 2016-11-30 | 北京星河人施工技术有限责任公司 | A kind of truss-like hydraulic pressure integral steel platform jumping formwork |
| CN206667192U (en) * | 2017-03-21 | 2017-11-24 | 中国葛洲坝集团三峡建设工程有限公司 | Hydraulic self-lifting cantilever heavy template |
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2017
- 2017-03-21 CN CN201710170994.5A patent/CN106812122B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH476191A (en) * | 1967-08-12 | 1969-07-31 | Luchterhand Schalungen Kommand | Climbing formwork and procedures for its operation during concreting |
| CN2929056Y (en) * | 2005-05-25 | 2007-08-01 | 北京卓良模板有限公司 | Hydraulic driving automatic climbing formwork |
| CN201826525U (en) * | 2010-07-27 | 2011-05-11 | 南京道广建筑模板有限公司 | Climbing shuttering system device for buildings |
| CN202247894U (en) * | 2011-09-05 | 2012-05-30 | 葛洲坝集团第二工程有限公司 | Double-strut cantilever template |
| CN204475342U (en) * | 2014-12-30 | 2015-07-15 | 南京道广建筑模板有限公司 | Pile structure concrete in mass plate device |
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