Super-long-span concrete construction device and construction method thereof

Abstract

The invention discloses an ultra-long-span concrete construction device and a construction method thereof, and belongs to the technical field of building construction equipment.The ultra-long-span concrete construction device comprises a bottom formwork, two side formworks and an end formwork, and the bottom formwork, the two side formworks, the end formwork and a poured concrete structure are combined to form a pouring bin; a steel bar framework is arranged in the pouring bin, a support is installed outside the pouring bin, a plurality of temperature measuring pipes are welded in the steel bar framework, the temperature measuring pipes can be used for being matched with a limiting mechanism to firmly fix temperature measuring lines in the steel bar framework, and the phenomenon that the temperature measuring lines fall off when concrete is poured is avoided; the temperature measuring accuracy is guaranteed, reasonable curing measures are adjusted, the quality of concrete is improved, meanwhile, the steel bar grids and the foam plates are additionally arranged, construction joints can be effectively separated, the later-period formwork removing and cleaning time is shortened, and the construction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction equipment, and more specifically, to an ultra-long span concrete construction device and a construction method thereof. Background Art

[0002] With the accelerated pace of social modernization, urban construction is also developing rapidly. Construction projects are constantly developing in the direction of large-scale and multifunctionality. Extra-long, extra-large and large column grid building structures are constantly emerging. The forms of buildings have become more diversified, and the characteristics of large spans, large cross-sections and large concrete volumes have become more prominent. In order to adapt to the requirements of today's construction market, the emergence of large-section and extra-long span structural buildings has become inevitable, and the construction quality of large-section and long-span concrete structures has been improved, and cracks and settlements caused by construction problems have been reduced. Problems that affect the use function of the structure. In the process, hydration heat temperature control measures such as controlling concrete raw materials and controlling pouring temperature are taken, and measures such as calculating beam bending deflection, optimizing pre-arch and monitoring the settlement of the bracket are taken to solve the problems of cracks in concrete structures, excessive deflection and other problems that affect the structural quality.

[0003] Based on the above, the inventors found that: when monitoring the temperature of ultra-long span concrete, it is usually necessary to install the temperature control component into the steel frame, and the traditional temperature control components are mostly installed on the steel bars by wire or tape, and the installation method is not firm, and it is easy to fall off during the concrete pouring process, thereby affecting the accuracy of its temperature measurement. At the same time, during the concrete pouring process, when dealing with the construction joint, the template is usually used directly to seal it, which makes the later template and concrete bonding, and it is more troublesome to remove the template and clean it, reducing the construction efficiency. Therefore, in view of this, the existing structure is studied and improved, and an ultra-long span concrete construction device and a construction method thereof are provided, in order to achieve a more practical purpose. Summary of the invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide an ultra-long span concrete construction device and a construction method thereof, which can utilize a temperature measuring tube in conjunction with a limiting mechanism to firmly fix the temperature measuring line in a steel skeleton, thereby avoiding the phenomenon of the temperature measuring line falling off during concrete pouring, ensuring the accuracy of its temperature measurement, adjusting reasonable maintenance measures, and improving the quality of concrete. At the same time, adding steel grids and foam boards can effectively separate construction joints, reduce the time for later demolding and cleaning, and improve construction efficiency.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] An ultra-long span concrete construction device, comprising a bottom formwork, two side formworks and an end formwork, wherein the bottom formwork, the two side formworks and the end formwork are combined with a poured concrete structure to form a pouring bin, a steel frame is arranged inside the pouring bin, a bracket is installed outside the pouring bin, a plurality of temperature measuring tubes are welded inside the steel frame, three temperature measuring lines are arranged on the periphery of the temperature measuring tubes and fixed by a limit mechanism; The limiting mechanism includes a guide column fixed to the inner bottom wall of the temperature measuring tube, a moving rod sliding on the inner wall of the temperature measuring tube and an adjusting screw threadedly connected to the inner wall of the top of the temperature measuring tube. The bottom of the moving rod is slidably connected to the outer periphery of the top of the guide column, the bottom end of the adjusting screw is contacted and connected to the top of the moving rod, and a plurality of flexible steel wire rings are fixedly connected to the outer periphery of the moving rod. The flexible steel wire rings extend to the outside of the temperature measuring tube, and the temperature measuring line passes through the corresponding flexible steel wire rings.

[0007] Furthermore, a guide groove is provided at the bottom of the moving rod, and the outer periphery of the top end of the guide column slides in the guide groove.

[0008] Furthermore, an inner side wall at the top of the temperature measuring tube is provided with an internal thread matching the adjusting screw, and the adjusting screw is threadedly connected to the inner side wall of the temperature measuring tube via the internal thread.

[0009] Furthermore, a compression spring is arranged between the bottom inner wall of the temperature measuring tube and the bottom end of the moving rod, and the compression spring is sleeved on the outer periphery of the guide column.

[0010] Furthermore, a plurality of through holes are evenly distributed on the outer circumference of the temperature measuring tube from top to bottom, and the bent portion of the flexible wire ring extends to the outside of the temperature measuring tube through the through holes.

[0011] Furthermore, a steel mesh is welded and fixed to one end of the steel skeleton close to the end template, a foam board is arranged between the steel mesh and the end template, and the foam board is fixed to the end template by iron nails.

[0012] Furthermore, reinforcement belts are laid on the top of both sides of the steel frame, and one end of the reinforcement belt is fixedly connected to the corresponding side formwork.

[0013] Furthermore, a plurality of evenly distributed diagonal braces are installed on both sides of the bracket, and scissor braces are installed on both ends of the bracket.

[0014] A construction method for an ultra-long span concrete construction device comprises the following steps: Template installation: S1: First, the bracket is set up along the direction of the poured concrete structure, then the side formwork is installed, and then the steel frame is tied; S2: After the bracket, side formwork and steel frame are installed, the reinforcement belt is laid and fixed on the top of both sides of the steel frame, and one end of the reinforcement belt is fixed to the corresponding side formwork; S3: After completing steps S and S, weld the steel mesh to the end of the steel skeleton close to the end formwork, then nail a foam board of appropriate size to the side formwork, and then fix the side formwork to one end of the steel skeleton to form a casting bin in combination with the bottom formwork, two side formworks and the poured concrete structure; After completing S1-S3 operations, install the temperature control equipment: S4: First, determine the installation position of the concrete temperature measuring tube. According to the requirements of temperature measurement and monitoring, weld the temperature measuring tube to each designated point of the steel frame, and set the temperature measuring tube vertically to the bottom formwork; S5: Next, the three temperature measuring wires are passed through the corresponding soft steel wire rings from top to bottom in sequence, and then the adjusting screw is rotated to drive the moving rod to move downward, and the soft steel wire ring is then pulled by the inside of the temperature measuring tube, so that the part extending outside is gradually reduced. With the cooperation of the outer wall of the temperature measuring tube, the temperature measuring wire is locked and fixed, and the temperature measuring wire is fixed; S6: When installing the temperature measuring line, three temperature measuring lines are set on each temperature measuring tube, and the temperature measuring contacts on the temperature measuring line are located at the upper, middle and lower positions of the concrete layer to detect the temperature at different positions of the concrete; S7: After completing the above installation, before pouring concrete, test the temperature measuring line to ensure that the measurement is accurate. After completing the test, pour concrete. After pouring, use temperature control monitoring instruments to grasp the concrete temperature and adjust maintenance measures according to the situation.

[0015] Compared with the prior art, the advantages of the present invention are: (1) In this scheme, after the temperature measuring tube and the limit mechanism are set up, the temperature measuring tube is welded to the steel frame, and the three temperature measuring wires are passed through the corresponding soft steel wire rings from top to bottom in turn, and then the adjusting screw is rotated to drive the moving rod to move downward, and the soft steel wire ring is also pulled by the inside of the temperature measuring tube, so that the part extending outside is gradually reduced. With the cooperation of the outer wall of the temperature measuring tube, the temperature measuring wire is locked and fixed, and the temperature measuring wire is fixed, which avoids the phenomenon of falling off of the temperature measuring wire during concrete pouring, ensures the accuracy of its temperature measurement, adjusts reasonable maintenance measures, and improves the quality of concrete.

[0016] (2) This scheme can effectively separate the construction joints by adding steel grids and foam boards, reduce the time for later formwork removal and cleaning, and improve construction efficiency.

[0017] (3) This scheme can strengthen the support by adding reinforcing belts, diagonal braces and scissor braces, and monitor the displacement, settlement and deformation of the support in real time, so that the stability of the overall structure of the support is greatly improved, ensuring the quality of concrete pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the structure without support; Figure 3 For the present invention Figure 2 Schematic diagram of the local split structure; Figure 4 For the present invention Figure 2 A schematic diagram of the enlarged structure of the middle A position; Figure 5 It is a schematic diagram of the structure of the temperature measuring tube, wire and limit mechanism of the present invention; Figure 6 It is a schematic diagram of the internal structure of the lower section of the temperature measuring tube of the present invention; Figure 7 It is a schematic diagram of the internal structure of the upper section of the temperature measuring tube of the present invention.

[0019] Description of the numbers in the figure: 1- bottom formwork; 2- side formwork; 3- end formwork; 4- casting bin; 5- steel skeleton; 6- bracket; 7- temperature measuring tube; 8- temperature measuring line; 9- limit mechanism; 901- guide column; 902- moving rod; 903- adjusting screw; 904- flexible wire ring; 10- compression spring; 11- steel mesh; 12- foam board; 13- reinforcing belt; 14- diagonal brace; 15- scissors brace. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention. Example

[0021] See also Figure 1-7 , an ultra-long span concrete construction device, comprising a bottom formwork 1, two side formworks 2 and an end formwork 3, the bottom formwork 1, the two side formworks 2, the end formwork 3 and the poured concrete structure are combined to form a pouring bin 4, a steel frame 5 is arranged inside the pouring bin 4, a bracket 6 is installed outside the pouring bin 4, a plurality of temperature measuring tubes 7 are welded inside the steel frame 5, three temperature measuring wires 8 are arranged on the periphery of the temperature measuring tube 7, and are fixed by a limit mechanism 9; The limiting mechanism 9 includes a guide column 901 fixed to the inner bottom wall of the temperature measuring tube 7, a moving rod 902 sliding on the inner wall of the temperature measuring tube 7 and an adjusting screw 903 threadedly connected to the inner wall of the top of the temperature measuring tube 7. The bottom of the moving rod 902 is slidably connected to the outer periphery of the top of the guide column 901, the bottom end of the adjusting screw 903 is in contact with the top of the moving rod 902, and a plurality of flexible steel wire rings 904 are fixedly connected to the outer periphery of the moving rod 902. The flexible steel wire rings 904 extend to the outside of the temperature measuring tube 7, and the temperature measuring line 8 passes through the corresponding flexible steel wire rings 904.

[0022] See also Figure 6 A guide groove is provided at the bottom of the moving rod 902, and the outer periphery of the top end of the guide column 901 slides in the guide groove.

[0023] See also Figure 7 The top inner wall of the temperature measuring tube 7 is provided with an internal thread matching the adjusting screw 903 , and the adjusting screw 903 is threadedly connected to the inner wall of the temperature measuring tube 7 through the internal thread.

[0024] See also Figure 6 A compression spring 10 is arranged between the bottom inner wall of the temperature measuring tube 7 and the bottom end of the moving rod 902 , and the compression spring 10 is sleeved on the outer periphery of the guide column 901 .

[0025] See also Figure 5 and Figure 6 A plurality of through holes are evenly distributed on the outer circumference of the temperature measuring tube 7 from top to bottom, and the bent portion of the flexible wire ring 904 extends to the outside of the temperature measuring tube 7 through the through holes.

[0026] See also Figure 3 A steel mesh 11 is welded and fixed to one end of the steel skeleton 5 close to the end template 3, a foam board 12 is arranged between the steel mesh 11 and the end template 3, and the foam board 12 is fixed to the end template 3 by iron nails.

[0027] See also Figure 1 Reinforcement belts 13 are laid on the tops of both sides of the steel frame 5, and one end of the reinforcement belt 13 is fixedly connected to the corresponding side formwork 2.

[0028] See also Figure 1 A plurality of evenly distributed diagonal braces 14 are installed on both sides of the bracket 6, and scissor braces 15 are installed on both ends of the bracket 6.

[0029] A construction method for an ultra-long span concrete construction device comprises the following steps: Installation of template: S1: First, the bracket 6 is set up along the direction of the poured concrete structure, and the diagonal brace 14 and the scissor brace 15 are added, and then the side formwork 2 is installed, and then the steel skeleton 5 is tied; S2: After the bracket 6, the side formwork 2 and the steel frame 5 are installed, the reinforcing belt 13 is laid and fixed on the top of both sides of the steel frame 5, and one end of the reinforcing belt 13 is fixed to the corresponding side formwork 2; S3: After completing steps S1 and S2, weld the steel mesh 11 to one end of the steel skeleton 5 close to the end formwork 3, then nail a foam board 12 of a suitable size to the side formwork 2, and then fix the side formwork 2 to one end of the steel skeleton 5, so that it is combined with the bottom formwork 1, the two side formworks 2 and the poured concrete structure to form a casting bin 4; After completing S1-S3 operations, install the temperature control equipment: S4: First, determine the installation position of the concrete temperature measuring tube 7, and weld the temperature measuring tube 7 to each designated point of the steel frame 5 according to the requirements of temperature measurement and monitoring, and the temperature measuring tube 7 is arranged vertically to the bottom formwork 1; S5: Next, the three temperature measuring wires 8 are passed through the corresponding soft wire rings 904 from top to bottom in sequence, and then the adjusting screw 903 is rotated to drive the moving rod 902 to move downward, and the soft wire ring 904 is then pulled by the inside of the temperature measuring tube 7, so that the part extending outside is gradually reduced, and with the cooperation of the outer wall of the temperature measuring tube 7, the temperature measuring wire 8 is locked and fixed, and the temperature measuring wire is fixed; S6: When installing the temperature measuring line 8, three temperature measuring lines 8 are arranged on each temperature measuring tube 7, and the temperature measuring contacts on the temperature measuring line 8 are located at the upper, middle and lower positions of the concrete layer, so as to detect the temperature at different positions of the concrete; S7: After completing the above installation, before pouring concrete, test the temperature measuring line 8 to ensure that the measurement is accurate. After completing the test, pour concrete. After pouring, use a temperature control monitoring instrument to grasp the concrete temperature and adjust the maintenance measures according to the situation. At the same time, monitor the displacement, settlement and deformation of the bracket 6. A monitoring section should be arranged every 10 to 15 meters. The accuracy of the monitoring instrument should meet the requirements of on-site monitoring, and a deformation monitoring alarm value should be set. Real-time monitoring should be implemented during the concrete pouring process. Generally, the monitoring frequency should not exceed 20 to 30 minutes per time.

[0030] Working principle: Installation of the formwork: First, the bracket 6 is set up along the direction of the poured concrete structure, and then the side formwork 2 is installed, and then the steel skeleton 5 is tied; after the bracket 6, the side formwork 2 and the steel skeleton 5 are installed, the reinforcing belt 13 is laid and fixed on the top of both sides of the steel skeleton 5, and one end of the reinforcing belt 13 is fixed to the corresponding side formwork 2; after completing steps S1 and S2, the steel grid 11 is welded to the end of the steel skeleton 5 close to the end formwork 3, and then the foam board 12 of the appropriate size is nailed to the side formwork 2, and then the side formwork 2 is fixed to one end of the steel skeleton 5, so that it is combined with the bottom formwork 1, the two side formworks 2 and the poured concrete structure to form a casting bin 4; Installation of temperature control equipment: First, determine the installation position of the concrete temperature measuring tube 7. According to the requirements of temperature measurement and monitoring, weld the temperature measuring tube 7 to each designated point of the steel frame 5, and set the temperature measuring tube 7 vertically to the bottom template 1; then pass the three temperature measuring wires 8 through the corresponding soft steel wire rings 904 from top to bottom, and then rotate the adjusting screw 903 to drive the moving rod 902 to move downward, and the soft steel wire ring 904 is also pulled by the inside of the temperature measuring tube 7, so that the part extending outside is gradually reduced, and the outer wall of the temperature measuring tube 7 is With the cooperation of the technicians, the temperature measuring line 8 is locked and fixed to complete the fixation of the temperature measuring line; when installing the temperature measuring line 8, three temperature measuring lines 8 are arranged on each temperature measuring tube 7, and the temperature measuring contacts on the temperature measuring line 8 are located at the upper, middle and lower positions of the concrete layer to monitor the temperature of different positions of the concrete; after completing the above installation, before pouring the concrete, the temperature measuring line 8 is tested to ensure that the measurement is accurate. After the test is completed, the concrete can be poured. After pouring, a temperature control monitoring instrument is used to grasp the temperature of the concrete and adjust the maintenance measures.

[0031] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the 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. Therefore, they cannot be understood as limitations on the present invention.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An ultra-long span concrete construction device, comprising a bottom formwork (1), two side formworks (2) and an end formwork (3), wherein the bottom formwork (1), the two side formworks (2) and the end formwork (3) are combined with a poured concrete structure to form a pouring bin (4), characterized in that: A steel frame (5) is provided inside the casting bin (4), a bracket (6) is installed outside the casting bin (4), a plurality of temperature measuring tubes (7) are welded inside the steel frame (5), and three temperature measuring wires (8) are provided on the periphery of the temperature measuring tubes (7) and fixed by a limiting mechanism (9); The limiting mechanism (9) comprises a guide column (901) fixed to the inner bottom wall of the temperature measuring tube (7), a moving rod (902) sliding on the inner side wall of the temperature measuring tube (7), and an adjusting screw (903) threadedly connected to the inner side wall of the top of the temperature measuring tube (7), the bottom of the moving rod (902) is slidably connected to the outer periphery of the top end of the guide column (901), the bottom end of the adjusting screw (903) is contact-connected to the top end of the moving rod (902), and the outer periphery of the moving rod (902) is fixedly connected to a plurality of flexible steel wire rings (904), the flexible steel wire rings (904) extend to the outside of the temperature measuring tube (7), and the temperature measuring wire (8) passes through the corresponding flexible steel wire rings (904).

2. The ultra-long span concrete construction device according to claim 1, characterized in that: A guide groove is provided at the bottom of the moving rod (902), and the outer periphery of the top end of the guide column (901) slides in the guide groove.

3. The ultra-long span concrete construction device according to claim 1, characterized in that: The top inner wall of the temperature measuring tube (7) is provided with an internal thread matching the adjusting screw (903), and the adjusting screw (903) is threadedly connected to the inner wall of the temperature measuring tube (7) via the internal thread.

4. The ultra-long span concrete construction device according to claim 1, characterized in that: A compression spring (10) is provided between the bottom inner wall of the temperature measuring tube (7) and the bottom end of the moving rod (902), and the compression spring (10) is sleeved on the outer circumference of the guide column (901).

5. The ultra-long span concrete construction device according to claim 1, characterized in that: The outer circumference of the temperature measuring tube (7) is provided with a plurality of through holes which are evenly spaced from top to bottom, and the bent portion of the flexible wire ring (904) extends to the outside of the temperature measuring tube (7) through the through holes.

6. The ultra-long span concrete construction device according to claim 1, characterized in that: A steel mesh (11) is welded and fixed to one end of the steel skeleton (5) close to the end template (3); a foam board (12) is provided between the steel mesh (11) and the end template (3); and the foam board (12) is fixed to the end template (3) by means of iron nails.

7. The ultra-long span concrete construction device according to claim 1, characterized in that: Reinforcement belts (13) are laid on the tops of both sides of the steel reinforcement frame (5), and one end of the reinforcement belt (13) is fixedly connected to the corresponding side formwork (2).

8. The ultra-long span concrete construction device according to claim 1, characterized in that: A plurality of evenly distributed diagonal braces (14) are installed on both sides of the bracket (6), and scissor braces (15) are installed on both ends of the bracket (6).

9. The construction method of an ultra-long span concrete construction device according to claim 1, characterized in that: The following steps are involved: Installation of template: S1: First, the support (6) is erected along the direction of the poured concrete structure, and then the side formwork (2) is installed, followed by tying the steel frame (5); S2: After the bracket (6), the side formwork (2) and the steel frame (5) are installed, the reinforcing belts (13) are laid and fixed on the top of both sides of the steel frame (5), and one end of the reinforcing belt (13) is fixed to the corresponding side formwork (2); S3: After completing steps S1 and S2, weld the steel mesh (11) to the end of the steel skeleton (5) close to the end formwork (3), then nail a foam board (12) of a suitable size to the side formwork (2), and then fix the side formwork (2) to one end of the steel skeleton (5) so that it is combined with the bottom formwork (1), the two side formworks (2) and the poured concrete structure to form a casting bin (4); After completing S1-S3 operations, install the temperature control equipment: S4: First, determine the installation position of the concrete temperature measuring tube (7), and weld the temperature measuring tube (7) to each designated point of the steel frame (5) according to the requirements of temperature measurement and monitoring, and set the temperature measuring tube (7) vertically to the bottom formwork (1); S5: Next, the three temperature measuring wires (8) are passed through the corresponding soft steel wire rings (904) from top to bottom in sequence, and then the adjusting screw (903) is rotated to drive the moving rod (902) to move downward, and the soft steel wire ring (904) is also pulled by the inside of the temperature measuring tube (7) so that the part extending outside is gradually reduced. With the cooperation of the outer wall of the temperature measuring tube (7), the temperature measuring wire (8) is locked and fixed, and the temperature measuring wire is fixed; S6: When installing the temperature measuring wires (8), three temperature measuring wires (8) are provided on each temperature measuring tube (7), and the temperature measuring contacts on the temperature measuring wires (8) are located at three positions of the upper, middle and lower parts of the concrete layer, so as to detect the temperature at different positions of the concrete; S7: After the above installation is completed, before pouring concrete, test the temperature measuring line (8) to ensure that the measurement is accurate. After the test is completed, pour concrete. After pouring, use a temperature control monitoring instrument to monitor the concrete temperature and adjust the maintenance measures accordingly.

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