A double-crossed inclined strut cooling tower and its installation and uninstallation methods

Abstract

An embodiment of the present application provides a double-cross diagonal strut cooling tower and its installation and uninstallation methods. Among them, the cooling tower includes at least two layers of steel structures arranged vertically. Each layer of the steel structure includes a plurality of diagonal struts. The plurality of diagonal struts are sequentially connected to form a ring. The diagonal struts are in an X shape. Two ends of the diagonal struts on the same horizontal plane are spaced along the circumference of the steel structure. The diagonal struts have steel pipes, and concrete is poured into the steel pipes. In the present application, the steel pipes can be quickly laid and installed as finished products, and then concrete is poured. The combined strength of the two is high, which can effectively prevent deformation. On the one hand, the use of a large amount of concrete is reduced, and at the same time as the concrete solidifies, the installation of the remaining diagonal struts can be carried out. The two can be constructed simultaneously, which can shorten the construction period. On the other hand, the concrete has strong compressive strength, while the diagonal struts have strong tensile strength. The combination of the two results in better structural stress performance.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of cooling, and in particular, to a double-cross inclined strut cooling tower and its installation and unloading methods. Background Art

[0002] Since the unit will emit a large amount of heat, in order to ensure its normal operation, heat dissipation treatment is required. Currently, equipment for cooling the unit, such as a cooling tower, is generally directly formed by concrete pouring due to its large volume. However, the concrete pouring method has the following disadvantages: On the one hand, the large amount of concrete used has a slow setting speed, and the upper layer cannot be poured until the lower layer is completely solidified, which results in a long construction period. On the other hand, the concrete pouring method has a large construction difficulty due to the lack of effective support. Summary of the Invention

[0003] In view of the above problems, the embodiments of the present application are proposed to provide a double-cross inclined strut cooling tower and its installation and unloading methods to solve the above problems.

[0004] The embodiments of the present application provide a double-cross inclined strut cooling tower, including at least two layers of steel structures arranged up and down. Each layer of the steel structure includes a plurality of inclined struts, and the plurality of inclined struts are sequentially connected to form a ring. The inclined struts are in an X shape, and two ends of the inclined struts on the same horizontal plane are spaced along the circumference of the steel structure. The inclined struts have steel pipes, and concrete is poured into the steel pipes.

[0005] Optionally, the inclined strut includes four steel pipes, and the four steel pipes are arranged radially to form an X shape. The four steel pipes are interconnected, and the steel pipes are fixedly welded together.

[0006] Optionally, lifting lugs are provided on the outer peripheral surface of the steel pipe.

[0007] Optionally, reinforcing plates are provided on the inner wall of the steel pipe corresponding to the lifting lugs.

[0008] Optionally, in the direction from bottom to top, the inclined struts are inclined inward.

[0009] Optionally, grouting holes are also provided on the inclined struts.

[0010] Optionally, the inclined strut further includes a ring beam, the ring beam is in a ring shape, and the ring beam sequentially connects the upper end portions of the plurality of inclined struts of the same layer of the steel structure.

[0011] Optionally, the ring beam includes a plurality of sub-components, and the plurality of sub-components are sequentially connected to form a ring shape, and adjacent two inclined struts are connected by the sub-components.

[0012] Optionally, the cooling tower includes two layers of the steel structure arranged vertically, and the ends of two obliquely arranged struts arranged vertically are welded;

[0013] The cooling tower further includes a chimney, and the chimney is installed at the upper end of the upper layer of the steel structure.

[0014] Correspondingly, the present application also provides an installation method for a double-crossed inclined strut cooling tower, including:

[0015] Install multiple inclined struts in sequence to form a ring to constitute a layer of steel structure;

[0016] Weld a ring beam at the upper ends of the inclined struts in the same layer, and the ring beam sequentially connects the upper ends of the multiple inclined struts;

[0017] Pour concrete into the steel pipes of the inclined struts;

[0018] After completing the installation of the lower layer of the steel structure, then carry out the installation of the upper layer of the steel structure.

[0019] Optionally, the step of pouring concrete into the steel pipes of the inclined struts includes:

[0020] For the inclined struts at the bottom layer, when the inclined struts within the same ring are arranged to complete one-fourth of the entire ring, start pouring concrete into the steel pipes, and pour concrete every other inclined strut until all the inclined struts are completely poured;

[0021] While pouring concrete, continue to install the remaining inclined struts;

[0022] For each inclined strut at the bottom layer, pour concrete in two times. The first time is poured to a preset height, and the second pouring is carried out after the strength is formed by the first pouring;

[0023] For the inclined struts at the top layer, after the multiple inclined struts form a closed ring, pour concrete into each inclined strut at one time.

[0024] Optionally, the step of welding a ring beam at the upper ends of the inclined struts in the same layer, and the ring beam sequentially connecting the upper ends of the multiple inclined struts includes:

[0025] When three inclined struts are installed, weld a sub-member between every two adjacent inclined struts;

[0026] Continue to install the remaining inclined struts, and weld a sub-member between each installed inclined strut and the previous inclined strut until multiple sub-members form a closed loop, and the multiple sub-members together constitute the ring beam;

[0027] For the topmost inclined struts, a plurality of welding points are reserved, and the welding points are located between two adjacent sub-members. After all the inclined struts are welded to the inclined struts below, the height and angle of the topmost inclined struts are adjusted, and finally the reserved welding points are welded.

[0028] Optionally, the step of sequentially installing a plurality of the inclined struts to form a ring to constitute a layer of steel structure includes:

[0029] Weld the lower ends of the inclined struts at the bottom layer to the column feet on the annular plate, and one column foot corresponds to the lower end of each steel pipe;

[0030] Pour concrete at the connection between the inclined strut and the column foot.

[0031] Optionally, the installation method further includes:

[0032] When installing the inclined struts, set support members to support the inclined struts. The upper ends of the support members are connected to the inclined struts, and the lower ends of the support members located on the inclined struts at the bottom layer abut against the ground;

[0033] When installing the inclined struts in the next layer, set a support falsework. The lower ends of the support members located in the next layer abut against the support falsework.

[0034] Correspondingly, the present application also provides a method for unloading a double-cross inclined strut cooling tower, including:

[0035] After all the inclined struts are poured with concrete, first disassemble the support members at the bottom layer to separate them from the inclined struts;

[0036] After the support members at the bottom layer are completely removed, then disassemble the support falsework of the upper layer and correspondingly remove the support members on the support falsework.

[0037] Optionally, when disassembling the support members on any layer of the steel structure, a central symmetry method is adopted to perform paired disassembly simultaneously.

[0038] In the cooling tower in the embodiment of the present application, the steel pipes can be quickly laid and installed as finished products, and then concrete is poured. The combination of the two has high strength and can effectively prevent deformation. Moreover, by adopting the combination of steel pipes and concrete, on the one hand, the use of a large amount of concrete is reduced, and at the same time when the concrete solidifies, the installation of the remaining inclined struts of other parts can be carried out. The two are constructed simultaneously, which can shorten the construction period. On the other hand, concrete has strong compressive strength, and the inclined struts have strong tensile strength. The combination of the two makes the structural stress performance better, thus greatly reducing the construction difficulty. Description of the Drawings

[0039] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0040] Figure 1 Schematic three-dimensional structure diagram of a double-crossed inclined strut cooling tower provided by an embodiment of the present application;

[0041] Figure 2 Front view of a double-crossed inclined strut cooling tower provided by an embodiment of the present application;

[0042] Figure 3 Top view of a double-crossed inclined strut cooling tower provided by an embodiment of the present application;

[0043] Figure 4 Schematic plan view of the inclined strut of a double-crossed inclined strut cooling tower provided by an embodiment of the present application;

[0044] Figure 5 Another schematic plan view of the inclined strut of a double-crossed inclined strut cooling tower provided by an embodiment of the present application;

[0045] Figure 6 Another schematic plan view of the inclined strut of a double-crossed inclined strut cooling tower provided by an embodiment of the present application, where Figure 6 the support member in Figure 5 is different from the support member in

[0046] Figure 7a Schematic flow chart of an installation method of a double-crossed inclined strut cooling tower provided by an embodiment of the present application;

[0047] Figure 7b Schematic flow chart of an unloading method of a double-crossed inclined strut cooling tower provided by an embodiment of the present application;

[0048] Figure 8 Schematic hoisting diagram of the inclined strut of a double-crossed inclined strut cooling tower provided by an embodiment of the present application;

[0049] Figure 9 Another schematic hoisting diagram of the inclined strut of a double-crossed inclined strut cooling tower provided by an embodiment of the present application;

[0050] Figure 10 Another schematic hoisting diagram of the inclined strut of a double-crossed inclined strut cooling tower provided by an embodiment of the present application.

[0051] Reference numerals: 10, steel structure; 11, inclined strut; 111, steel pipe; 112, grouting hole; 113, lifting lug; 12, ring beam; 20, annular plate; 21, column base; 30, 75-ton truck crane; 40, 260-ton crawler crane; 50 / 60, support member. Detailed implementation manners

[0052] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the embodiments of the present application.

[0053] It should be noted that in the description of the present application, the terms "first" and "second" are only used for the convenience of describing different components or names, and cannot be understood as indicating or implying a sequential relationship, relative importance, or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this application herein are only for the purpose of describing specific embodiments, and are not intended to limit this application.

[0055] Please refer to Figures 1 to 3 , the embodiments of the present application provide a double-cross inclined strut cooling tower, including at least two layers of steel structures 10 arranged up and down. Each layer of the steel structure 10 includes a plurality of inclined struts 11, and the plurality of inclined struts 11 are connected in sequence to form a ring. The inclined strut 11 has a steel pipe 111, and concrete is poured into the steel pipe 111.

[0056] In the embodiments of the present application, different numbers of layers of steel structures 10 can be set as needed. In an alternative embodiment, the cooling tower includes two layers of steel structures 10 arranged up and down. The lower end of the top-layer steel structure 10 is welded to the upper end of the bottom-layer steel structure 10. The welding method is stable and reliable, and can prevent the upper-layer steel structure 10 from toppling. Each layer of the steel structure 10 is in a closed ring shape, and multiple layers of steel structures 10 are coaxially arranged.

[0057] For each layer of the steel structure 10, the number of inclined struts 11 included therein can also be determined according to specific circumstances. For example, in one embodiment, each layer of the steel structure 10 can include 48 inclined struts

[0058] ​The two adjacent oblique struts 11 are connected to each other and are fixed by welding to form a stable structure so that the forces between them are evenly distributed.

[0059] Each inclined support 11 is formed by a combination of steel pipes 111. The length of the steel pipes 111 is generally along the vertical direction. This allows the entire inclined support 11 to be longer in the vertical direction, resulting in a greater height of the cooling tower. In one embodiment, the steel pipes 111 are not perpendicular to the ground, but are arranged at an angle. Specifically, the length of the steel pipes 111 is inclined relative to the vertical direction and toward the circumference of the steel structure 10. However, in other embodiments, the steel pipes 111 can also be installed perpendicular to the ground.

[0060] The bottom layer of inclined struts 11 needs to be fixed to the ground. To improve stability, in one embodiment, the cooling tower further includes an annular plate 20, which is provided with a plurality of column feet 21. The plurality of column feet 21 are provided on the upper surface of the annular connector and are spaced apart along its circumference. The lower ends of the steel pipes 111 are installed within the column feet 21, and each steel pipe 111 is installed with a corresponding column foot 21. In this embodiment, the provision of the annular plate 20, on the one hand, can provide a stable connection component for the steel pipes 111, preventing the steel pipes 111 from tipping over. On the other hand, the annular plate can be positioned in advance without the need to frequently move the steel pipes 111, thereby greatly facilitating subsequent installation.

[0061] To improve the stability of the steel pipe 111 and the column base 21 , in one embodiment, the steel pipe 111 is welded to the column base 21 , and concrete is poured between the steel pipe 111 and the column base 21 , thereby further ensuring the stability of the connection between the steel pipe 111 and the column base 21 .

[0062] Furthermore, the cooling tower further comprises an air duct (not shown), which is mounted on the upper end of the upper steel structure 10. It is conceivable that the air duct is coaxially arranged with the steel structure 10. In this embodiment, the air duct is in the shape of a cylinder that passes through from top to bottom.

[0063] In the cooling tower of the embodiment of the present application, the steel pipe 111 can be quickly laid and installed as a finished product, and then concrete can be poured. The combined strength of the two is high, which can effectively prevent deformation. In addition, the combination of steel pipe 111 and concrete reduces the large amount of concrete used. While the concrete is solidifying, the remaining diagonal struts can be installed. The simultaneous construction of the two can shorten the construction period. On the other hand, concrete has strong compressive strength, while the diagonal struts have strong tensile strength. The combination of the two improves the structural stress resistance, thereby greatly reducing the difficulty of construction.

[0064] The following further describes the embodiments of the present application in conjunction with specific implementation manners.

[0065] In one embodiment, the inclined strut 11 is in an X shape, and the two ends of the inclined strut 11 on the same horizontal plane are distributed at intervals along the circumferential direction of the steel structure 10. By using the X-shaped inclined strut 11 and installing and bearing forces through the two opened lower ends, the overall force is more balanced, and the inclined strut 11 can be effectively prevented from toppling.

[0066] Optionally, the inclined strut 11 includes four steel pipes 111, and the four steel pipes 111 are arranged radially to form the X shape. The four steel pipes 111 communicate with each other, and the steel pipes 111 are fixedly welded together. In this way, it can be ensured that each steel pipe 111 is filled with concrete.

[0067] In one embodiment, in the direction from bottom to top, the inclined strut 11 is inclined inward. In this way, the finally formed structure of all the steel structures 10 has a shape with a smaller upper end and a larger lower end.

[0068] In one embodiment, the upper inclined struts 11 and the lower inclined struts 11 are arranged in one-to-one correspondence. The one-to-one correspondence here means that the number of inclined struts 11 in each layer is the same, and they are in one-to-one correspondence in the up-and-down direction, that is, the two lower ends of the upper inclined struts 11 are connected to the two upper ends of the lower inclined struts 11 in one-to-one correspondence.

[0069] Please refer to Figure 4 , in one embodiment, lifting lugs 113 are provided on the outer peripheral surface of the steel pipe 111. The provision of the lifting lugs 113 can facilitate the threading of, for example, steel wire ropes, so as to facilitate the crane to lift the steel pipe 111 for installation. Optionally, four lifting lugs 113 are provided for each inclined strut 11. For the X-shaped inclined strut 11, one lifting lug 113 is provided for each steel pipe 111. The two upper lifting lugs 113 are on the same horizontal plane, and the two lower lifting lugs 113 are on the same horizontal plane. In this way, after the steel wire rope passes through the four lifting lugs 113 and is lifted by the crane, the inclined strut 11 is balanced in force, the shaking of the inclined strut 11 can be reduced, and it is convenient for the inclined strut 11 to be installed and positioned.

[0070] In one embodiment, the upper lifting lug 113 is 6848 mm away from the center of gravity of the inclined strut 11, and the lower lifting lug 113 is 8001 mm away from the center of gravity. However, in other embodiments, according to the different scales of the inclined strut 11 itself, the positions of the lifting lugs 113 from the center of gravity are also different.

[0071] In order to further achieve the effect of structural strengthening, in one embodiment, ear plates (not shown in the figure) are provided on both the upper and lower sides of the lifting lug 113. The ear plates are respectively connected to the lifting lug 113 and the outer wall of the steel pipe 111 to prevent the lifting lug 113 from deforming when stressed. Among them, in the same lifting lug 113, the thickness of the upper ear plate is 20 mm, and the thickness of the lower ear plate is 30 mm. Of course, the thicknesses of the two ear plates can also be the same, or the thicknesses of the two ear plates can be other values. In some embodiments, the ear plates are in the shape of plates, such as square, semi-circular, etc.

[0072] In order to further achieve the effect of structural strengthening and avoid local deformation of the lifting lug 113 and the steel pipe 111 at the location where the lifting lug 113 is provided, in one embodiment, a reinforcing plate (not shown in the figure) is provided on the inner wall of the steel pipe 111 corresponding to the lifting lug 113. Optionally, the reinforcing plate is welded to the steel pipe 111. The area of the reinforcing plate is relatively large and can cover the connection between the lifting lug 113 and the steel pipe 111, that is, the orthographic projection of the connection between the lifting lug 113 and the steel pipe 111 should fall within the reinforcing plate. It can be imagined that the lifting lug 113 is located on the outer wall of the steel pipe 111. The thickness of the reinforcing plate can be, but is not limited to, 18 mm. In some embodiments, the reinforcing plate is in the shape of a plate, such as square, semi-circular or curved, etc.

[0073] Please refer to Figure 5 and Figure 6 , since the inclined strut 11 itself is relatively heavy, and especially when it is installed obliquely relative to the ground, it is prone to tipping over. Therefore, during assembly, the support members 50 / 60 are used for support, and after all the installations are completed, the support members 50 / 60 are removed. In some embodiments, the support members 50 / 60 are in the shape of long bars and are supported at the intersection position of the X-shaped inclined strut 11. In addition, a bottom plate can be provided at the bottom of the support members 50 / 60 to have a larger support surface and improve the stability of the support.

[0074] Regarding the connection between the support members 50 / 60 and the inclined strut 11, one feasible way is that the upper end of the support member 50 / 60 is connected to the inclined strut 11 by a pin shaft, and the lower end of the support member 50 / 60 is connected to the foundation (such as the ground or the support jig) by a hinge connection. This method is simple to operate and convenient for subsequent removal.

[0075] Please refer to Figure 4 again. The inclined strut 11 is also provided with a grouting hole 112 for pouring cement.

[0076] Please refer to Figure 1 and Figure 2, To further improve the stability of the inclined struts 11, in one embodiment, multiple inclined struts 11 are connected as a whole to support and bear forces against each other. Specifically, the inclined strut 11 further includes a ring beam 12. The ring beam 12 is annular, and the ring beam 12 sequentially connects the upper ends of multiple inclined struts 11 of the same layer of steel structure 10.

[0077] For the convenience of construction, in one embodiment, the ring beam 12 includes multiple sub-components (not labeled). The multiple sub-components are sequentially connected to form an annular shape, and adjacent two inclined struts 11 are connected through sub-components. Optionally, one sub-component is correspondingly provided for each adjacent two inclined struts 11, and each sub-component connects the upper ends of two steel pipes 111 of the same inclined strut 11. By forming the ring beam 12 from multiple sub-components, on the one hand, the space occupied during transportation is reduced, and on the other hand, the processing difficulty is also lowered.

[0078] Please refer to Figure 7a , The embodiment of the present application further provides an installation method for a double-cross inclined strut cooling tower. Among them, for the specific structure of the cooling tower, please refer to the above embodiments and will not be elaborated here one by one.

[0079] In the embodiment of the present application, the installation method of the double-cross inclined strut cooling tower includes the following steps:

[0080] Step S10: Install multiple said inclined struts in sequence to form an annular shape to constitute a layer of steel structure;

[0081] When arranging the inclined struts 11 of the same layer, that is, the same ring, one feasible arrangement method is that after the first said inclined strut 11 is installed, the remaining said inclined struts 11 are installed in pairs in sequence. The two inclined struts 11 of each pair are installed simultaneously and are distributed on both sides of the first said inclined strut 11.

[0082] Since the inclined strut 11 is heavy, auxiliary tools are needed for installation. For the inclined struts 11 within the same ring, use a crawler crane to install the first inclined strut 11, and then add a crawler crane. The two crawler cranes start assembling the next pair of inclined struts 11 from both sides of the first inclined strut 11, that is, the two crawler cranes each install the second and third inclined struts 11 simultaneously, and so on until a closed ring is formed.

[0083] The size of the steel pipe 111 is selected according to needs, for example, including but not limited to a steel pipe 111 with a diameter of 1321 mm and a wall thickness of 18 mm.

[0084] The crawler crane is specifically selected according to the weight of the inclined strut 11 itself, as well as the hoisting radius and hoisting height. When using a steel pipe 111 with a diameter of 1321 mm and a wall thickness of 18 mm, a 260-ton crawler crane 40 can be selected.

[0085] Step S20: Weld a ring beam at the upper ends of the diagonal struts 11 on the same layer, and the ring beam sequentially connects the upper ends of the multiple diagonal struts.

[0086] Two adjacent diagonal struts 11 are connected to each other to improve the stability of the overall structure.

[0087] When welding the ring beam 12, use a truck crane (such as but not limited to a 25-ton truck crane) to lift the ring beam 12, and use a straight boom vehicle to provide welding workers for operation.

[0088] When installing the diagonal struts 11 and welding the ring beam 12, use a total station to adjust the positions of the diagonal struts 11 and the ring beam 12 to the designed coordinate positions to ensure that the entire cooling tower meets the requirements.

[0089] Step S30: Pour concrete into the steel pipes of the diagonal struts.

[0090] One feasible way is to start pouring concrete after all the diagonal struts 11 in the same ring are assembled. Another feasible way is to start pouring concrete when some of the diagonal struts 11 are assembled, and at the same time, complete the assembly of the remaining diagonal struts 11.

[0091] Step S40: After completing the installation of the steel structure of the lower layer, then install the steel structure of the upper layer.

[0092] In one embodiment, the cooling tower includes multiple layers of the diagonal struts 11 arranged up and down. After completing the installation of the diagonal struts 11 of the lower layer, sequentially start installing the diagonal struts 11 of the upper layer, and the lower ends of the diagonal struts 11 of the upper layer are welded to the upper ends of the diagonal struts 11 of the lower layer.

[0093] When arranging multiple layers of diagonal struts 11, after all the steel structures 10 of the lower layer are completely installed, then install the steel structure 10 of the upper layer, and repeat the above steps S10 to S30. It should be noted that the above steps S10 to S30 are not in a specific order, and these steps such as the assembly of the diagonal struts 11, the pouring of concrete, and the welding of the ring beam 12 can be carried out sequentially or crosswise.

[0094] In the embodiment of the present application, the steel pipes 111 can be quickly laid and installed as finished products, and then concrete is poured. The combination of the two has high strength and can effectively prevent deformation. Moreover, by adopting the combination of the steel pipes 111 and concrete, on the one hand, the use of a large amount of concrete is reduced, and at the same time, while the concrete is solidifying, the installation of other diagonal struts 11 can be carried out. Some diagonal struts 11 are poured with concrete, and some diagonal struts 11 are installed. The two are constructed simultaneously, which can shorten the construction period. On the other hand, the concrete pouring method is effectively supported by the steel pipes 111 with high strength, thus greatly reducing the construction difficulty.

[0095] In one embodiment, the cooling tower includes multiple layers of the inclined struts 11 arranged vertically and welded to each other. In step S30, the step of pouring concrete into the steel pipes of the inclined struts includes:

[0096] Step S31: For the inclined struts at the bottommost layer, when the inclined struts within the same ring are arranged to complete one-fourth of the entire ring, start pouring concrete into the steel pipes, and pour concrete every other inclined strut until all the inclined struts are completely poured;

[0097] Step S32: While pouring concrete, continue to install the remaining inclined struts.

[0098] When the inclined struts 11 within the same ring are arranged to complete one-fourth of the entire ring, start pouring concrete, and at the same time continue to install the remaining inclined struts 11, which can effectively reduce the subsequent waiting time for the concrete to solidify and greatly shorten the construction period.

[0099] Pouring concrete every other inclined strut 11 can make the overall force more balanced and avoid deformation between the already installed inclined struts 11 due to the weight concentrating at one place.

[0100] Step S33: For each inclined strut at the bottommost layer, pour concrete in two times. The first time is poured to a preset height, and the second pouring is carried out after the strength is formed by the first pouring.

[0101] Specifically, for the inclined struts 11 of the first layer, i.e., the bottommost steel structure 10, the concrete is first poured to the position of the grouting hole 112. After the lower foundation construction is completed, the concrete is then poured from the grouting hole 112 to the position of the middle ring beam 12. Pouring the concrete in two times is beneficial to the rapid solidification of the first pouring. In this embodiment, the preset height refers to the height to the grouting hole 112.

[0102] Step S34: For the inclined struts at the topmost layer, after multiple inclined struts form a closed ring, pour concrete into each inclined strut at one time.

[0103] In one embodiment, in step S20, the step of welding a ring beam at the upper ends of the inclined struts in the same layer, where the ring beam sequentially connects the upper ends of multiple inclined struts includes:

[0104] Step S21: When three inclined struts are installed, weld a sub-component between every two adjacent inclined struts;

[0105] Step S22: Continue to install the remaining inclined struts. After installing each inclined strut, weld one sub-member between it and the previous inclined strut until a closed loop is formed by multiple sub-members, and the multiple sub-members together form the ring beam.

[0106] Step S23: For the inclined struts at the topmost layer, reserve multiple welding points, which are located between two adjacent sub-members. After all the inclined struts are welded to the inclined struts below, adjust the height and angle of the inclined struts at the topmost layer, and finally weld the reserved multiple welding points.

[0107] Reserving multiple welding points means not welding at this place temporarily, so as to facilitate subsequent overall adjustments such as the angle and height of the inclined strut 11 at the top layer, making the finally formed cooling tower meet the requirements. In one embodiment, the number of reserved welding points can be, but is not limited to, 8.

[0108] Similarly, for the convenience of subsequent adjustment, the reserved welding points are reserved in a symmetric manner, that is, the central angle between every two adjacent welding points is the same.

[0109] In one embodiment, step S10, the step of sequentially installing multiple inclined struts to form a ring to constitute a layer of steel structure includes:

[0110] Step S11: Weld the lower end of the inclined strut at the bottommost layer to the column foot on the annular plate, and the lower end of each steel pipe corresponds to one column foot.

[0111] Step S12: Pour concrete at the connection between the inclined strut and the column foot.

[0112] In this embodiment, concrete can be poured into the steel pipes 111 of other inclined struts 11 while installing the inclined struts 11, or concrete can be poured into the steel pipes 111 after all the inclined struts 11 are fixed to the annular plate 20.

[0113] In one embodiment, the installation method further includes:

[0114] Step S50: While installing the inclined struts, set up support members to support the inclined struts. The upper end of the support member is connected to the inclined strut, and for the support member on the inclined strut at the bottommost layer, its lower end abuts against the ground.

[0115] The support member 50 and the inclined strut 11 are pre-assembled together. Therefore, when the crane lifts, when lifting the lifting lug 113 on the inclined strut 11, the support member 50 and the inclined strut 11 are lifted up together.

[0116] Step S60: When installing the diagonal struts of the next layer, set up a support falsework. For the support member located on the next layer, its lower end abuts against the support falsework.

[0117] Among them, guy ropes can be stretched on both sides of the support falsework and fixed to the ground to prevent the support falsework from tipping over.

[0118] The length of the support member 50 ( Figure 5 as shown) at the bottom layer is greater than the length of the support member 60 ( Figure 6 as shown) at the upper layer.

[0119] Please refer to Figure 7b for further details. Further, the embodiment of the present application also provides a method for unloading a double-cross diagonal strut cooling tower. Among them, for the specific structure of the cooling tower, please refer to the above embodiments and will not be elaborated here one by one. In the embodiment of the present application, the method for unloading a double-cross diagonal strut cooling tower includes the following steps:

[0120] Step S70: After all the diagonal struts are concreted, first disassemble the support member at the bottom layer to separate it from the diagonal strut;

[0121] Step S80: After the support member at the bottom layer is completely removed, then disassemble the support falsework and correspondingly remove the support members on the support falsework;

[0122] Among them, when disassembling the support member 50 on any layer of the steel structure, it is carried out in a centrosymmetric manner in pairs, that is, two support members 50 are removed simultaneously each time, and the two support members 50 are centrosymmetrically arranged with the axis of the cooling tower as the center, which can make the overall structure more balanced in force. At the same time, a total station is used to detect the deformation during the unloading process in real time.

[0123] The removal of the support member 50 / 60 is described in detail through a specific application scenario as follows:

[0124] ① The removal of the temporary support member 50 follows the principle of hierarchical symmetric removal. Starting from the bottom up, first remove the support member 50 ( Figure 5 ) corresponding to the first-layer diagonal strut 11, and then remove the support falsework corresponding to the second-layer diagonal strut 11, both of which are removed in a symmetric clockwise direction.

[0125] ② Demolition sequence of the first - layer support member 50: Simultaneously conduct the first - time demolition of the support member 50 between the 33rd axis and the 34th axis and the support member 50 between the 9th axis and the 10th axis → Simultaneously conduct the second - time demolition of the support member 50 between the 21st axis and the 22nd axis and the support member 50 between the 45th axis and the 46th axis → Simultaneously conduct the third - time demolition of the support member 50 between the 27th axis and the 28th axis and the support member 50 between the 3rd axis and the 4th axis →... → Simultaneously conduct the 15th - time demolition of the support member 50 between the 22nd axis and the 24th axis and the support member 50 between the 46th axis and the 48th axis → Simultaneously conduct the 16th - time demolition of the support member 50 between the 10th axis and the 12th axis and the support member 50 between the 34th axis and the 36th axis. (Taking 48 inclined struts 11 as an example)

[0126] ③ Demolition sequence of the second - layer support bracket: Demolish the X - pillar support bracket of the 33rd axis and the X - pillar support bracket of the 9th axis for the first time → Demolish the X - pillar support bracket of the 21st axis and the X - pillar support bracket of the 45th axis for the second time → Demolish the X - pillar support bracket of the 27th axis and the X - pillar support bracket of the 6th axis for the third time →... → Demolish the X - pillar support bracket between the 16th axis and the 17th axis and the X - pillar support bracket between the 40th axis and the 41st axis for the 15th time → Demolish the X - pillar support bracket between the 10th axis and the 11th axis and the X - pillar support bracket between the 34th axis and the 35th axis for the 16th time → Demolish symmetrically in sequence. It should be noted that before demolishing the support bracket, first demolish the support member 60 ( Figure 6 ) on the support bracket. The demolition sequence of the support member 60 can refer to that of the first - layer support member 50, which will not be elaborated here.

[0127] In the embodiment of the present application, the hoisting sequence of the inclined strut 11 can but is not limited to the following method:

[0128] ① Place the first - layer X - type inclined strut 11 and the temporary support member 50 in place before hoisting, as Figure 4 shown;

[0129] ② Use a 260 - ton crawler crane 40 to hoist 4 lifting lugs 113, with the force - bearing points being the upper two lifting lugs 113, and use a 75 - ton truck crane 30 to hoist the lower member (i.e., the lower half of the X - type inclined strut 11) to play an auxiliary role. When the intersection point of the X - type inclined strut 11 is 1.8 m above the ground, connect the temporary support member 50 and the X - type inclined strut 11 with a pin shaft (as Figure 8 shown);

[0130] ③ Use the 260 - ton crawler crane 40 and the 75 - ton truck crane 30 to continue hoisting until the angle reaches 41°. At this time, the upper two members of the 260 - ton crawler crane 40 are under force, and the 75 - ton truck crane 30 assists in hoisting the lower member (as Figure 9 shown).

[0131] ④ Use the 260-ton crawler crane 40 and the 75-ton truck crane 30 to continue lifting, adjust the angle to the right position, and when the angle reaches 75°, all four wire ropes of the 260-ton crawler crane 40 are stressed, and the hook of the 75-ton truck crane 30 can be removed (such as Figure 10 shown).

[0132] In some embodiments, such as Figure 5 As shown, when the first layer (referring to the bottom layer) inclined support 11 is hoisted, a 260-ton crawler crane is used to hoist four lifting ears 113, the angle α of the wire rope is set to 17°, and the lengths of the wire rope are 21 meters and 6 meters.

[0133] In some embodiments, such as Figure 6 As shown, when the second layer (referring to the layer above the bottom layer) inclined support 11 is hoisted, a 260-ton crawler crane is used to hoist four lifting ears 113, the angle α of the wire rope is set to 14°, and the lengths of the wire rope are 19 meters and 6 meters.

[0134] In the embodiment of the present application, the installation order of the first layer of inclined pillars 11 and the column base 21 can be, but is not limited to, carried out in the following manner:

[0135] ① Install the temporary support column foot 21. After the overall X-shaped inclined support 11 is lifted, first fix the temporary support member 50 with anchor bolts;

[0136] ② Adjust the correspondence between the X-shaped oblique support 11 and the column foot 21. At this time, the temporary support member 50 is fixed. The X-shaped oblique support 11 is aligned with the column foot 21 on the embedded part through the positioning line on the X-shaped oblique support 11, and the lower end of the X-shaped oblique support 11 is fixed;

[0137] ③Use the total station to monitor and re-measure the control points in all directions to ensure that all control points are within a reasonable error range;

[0138] ④ After the X-shaped inclined support 11 is in place, pre-loosen the hook without removing the hook, and use the instrument to re-measure the upper and lower ends of the inclined support 11 and the ring beam 12 for deviation. If there is deviation, re-tighten the hook wire rope, adjust it into place with a jack or manual fall chain, pre-loosen the hook and re-measure until there is no deviation;

[0139] ⑤ Hoist the remaining X-shaped inclined struts 11 in clockwise order according to this method.

[0140] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative efforts.

[0141] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, and are not intended to limit them. Although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An installation method for a double-cross inclined strut cooling tower, characterized in that, Including: Welding the lower ends of the bottom-layer inclined struts to the column bases on the annular plate, and the lower end of each steel pipe corresponding to one of the column bases; Pouring concrete at the connection between the inclined struts and the column bases; Welding a ring beam at the upper ends of the inclined struts on the same layer, and the ring beam connecting the upper ends of the multiple inclined struts in sequence; Pouring concrete into the steel pipes of the inclined struts; After completing the installation of the steel structure of the lower layer, then carrying out the installation of the steel structure of the upper layer; The step of pouring concrete into the steel pipes of the inclined struts includes: For the bottom-layer inclined struts, when the inclined struts arranged within the same ring complete one-fourth of the entire ring, start pouring concrete into the steel pipes, and pouring concrete every other inclined strut until all the inclined struts are completely poured; While pouring concrete, continue to install the remaining inclined struts; For each of the bottom-layer inclined struts, pouring concrete in two times, pouring to a preset height for the first time, and carrying out the second pouring after the strength is formed by the first pouring; For the top-layer inclined struts, after the multiple inclined struts form a closed ring, pouring concrete into each of the inclined struts at one time.

2. The installation method of the double-cross inclined strut cooling tower according to claim 1, characterized in that The step of welding a ring beam at the upper ends of the inclined struts on the same layer, and the ring beam connecting the upper ends of the multiple inclined struts in sequence includes: When three of the inclined struts are installed, welding a sub-component between every two adjacent inclined struts; Continuing to install the remaining inclined struts, and welding a sub-component between each installed inclined strut and the previous inclined strut until multiple sub-components form a closed loop, and the multiple sub-components jointly form the ring beam; For the top-layer inclined struts, reserving multiple welding points, the welding points being located between two adjacent sub-components. When all the inclined struts are welded to the inclined struts below, adjusting the height and angle of the top-layer inclined struts, and finally welding the reserved multiple welding points.

3. The installation method of the double-cross inclined strut cooling tower according to any one of claims 1 to 2, characterized in that, The installation method further includes: While installing the inclined struts, arranging support members to support the inclined struts, the upper ends of the support members being connected to the inclined struts, and the lower ends of the support members located on the bottom-layer inclined struts abutting against the ground; When installing the inclined struts of the lower layer, arranging a support bracket, and the lower ends of the support members located on the lower layer abutting against the support bracket; the lower layer is above the bottom-layer inclined struts.

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