Door opening for prefabricating assembly type wind power generation concrete tower drum and concrete tower

Abstract

The utility model relates to a door opening for a prefabricated wind power generation concrete tower drum and a concrete tower. The door opening (4) comprises door opening reinforcing side columns (5) and door opening reinforcing cross beams (6). The door opening reinforcing cross beam (6) is arranged above the door opening (4); the door opening reinforcing side columns (5) are arranged on the left side and the right side of the door opening (4). The door opening reinforcing cross beam (6) protrudes towards the inner side (8) of the tower drum and protrudes towards the outer side (7) of the tower drum. The door opening reinforcing side columns (5) protrude towards the inner side (8) of the tower drum and the outer side (7) of the tower drum. Compared with the prior art, the lower part of the door opening is broken, and the door opening reinforcing side column directly falls on the top surface of the hollow foundation column pier of the tower frame of the wind turbine generator, so that the common problem of concrete cracking below the conventional door opening is solved, and the height and the rigidity of the door opening reinforcing cross beam are increased; the door opening reinforcing side columns and the door opening reinforcing cross beams form a door-shaped frame with large rigidity, and the problems of transmission of force around the door opening and stress concentration are effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to structural engineering technical field especially is related to the door hole and concrete tower for prefabricated assembly type wind power generation concrete tower. BACKGROUND

[0002] The lower section of prefabricated assembly type steel-concrete hybrid tower drum is prefabricated assembly type reinforced concrete tower drum, the upper section is steel tower drum, the tower drum interior is arranged to provide the ladder and cable of transmission electric energy for up and down traffic, therefore, the tower drum bottom needs to open hole and set up door hole. Due to the limitation of transportation condition and hoisting equipment, the height of prefabricated assembly type reinforced concrete tower drum section is usually between 3m-3.6m, and the height of door hole of large megawatt wind turbine is generally between 2m-2.2m. Common door hole is generally set up in the middle of section, so the distance between the upper edge of door hole and transverse joint and the distance between the lower edge and the top surface of foundation are small. Figure 1 The door hole changes the original continuous and uniform stress state of tower drum, and stress concentration appears in the door hole peripheral area under the action of various complex loads when the wind turbine is running, so cracks appear. Usually, designers add hidden beams above and below the door hole for reinforcement. However, due to the limitation of the height of bottom section tower drum and the minimum height requirement of door hole, the distance between the upper edge of door hole and transverse joint and the distance between the lower edge of door hole and the top surface of foundation are small, and the smallest distance is only 400mm. The diameter of bottom section tower drum is generally around 7m-10m, the width of door hole is generally around 0.8m-1.2m, and the width of door hole of large megawatt wind turbine generally needs to be 1.2m. Therefore, designers take a series of measures to reinforce the door hole periphery, such as reinforcing the steel door frame in various forms, reliably connecting the bolt and the door hole periphery concrete by welding on the steel door frame, strengthening the door hole periphery reinforcement to form hidden beams and hidden columns, etc. However, the thickness of concrete tower drum is generally 240-350mm, and the thickness of steel door frame is generally around 20mm, so the stiffness of steel door frame is relatively weak compared with the weakening of door hole. Finite element analysis shows that the reinforcing effect of steel door frame on door hole is very limited, so many cracks appear in the concrete around the door hole in actual engineering. Once the cracks appear and continue to expand, the durability of concrete will be reduced, water vapor and harmful chemicals will more easily enter the interior of concrete, corrode the internal steel bars and other components, and weaken the overall performance of the structure.

[0003] Therefore, there is an urgent need for a door hole for prefabricated assembly type wind power generation concrete tower to reinforce the weakened part of the door hole, so as to inhibit the generation and development of cracks in the concrete around the door hole, and a concrete tower including the door hole. SUMMARY

[0004] The utility model discloses a door hole and concrete tower for prefabricated assembly type wind power generation concrete tower drum, through setting up the reinforcing column (door hole reinforcing side column) and reinforcing crossbeam (door hole reinforcing crossbeam) with the wall of the drum being integrated on both sides and top of the door hole, the reinforcing section of the reinforcing column and the weakened door hole section are basically same, the reinforcing crossbeam and the thickness of the wall of the drum are connected through the taper surface gentle transition, form the door type frame of greater rigidity, constrain the deformation of the door hole, through the implementation of the reinforcing measure, can effectively reinforce the weakened position of the door hole, thereby inhibiting the generation and development of the door hole surrounding concrete crack.

[0005] The utility model discloses a door hole and concrete tower for prefabricated assembly type wind power generation concrete tower drum, through setting up the reinforcing column (door hole reinforcing side column) and reinforcing crossbeam (door hole reinforcing crossbeam) with the wall of the drum being integrated on both sides and top of the door hole, the reinforcing section of the reinforcing column and the weakened door hole section are basically same, the reinforcing crossbeam and the thickness of the wall of the drum are connected through the taper surface gentle transition, form the door type frame of greater rigidity, constrain the deformation of the door hole, through the implementation of the reinforcing measure, can effectively reinforce the weakened position of the door hole, thereby inhibiting the generation and development of the door hole surrounding concrete crack.

[0006] The utility model discloses a door hole and concrete tower for prefabricated assembly type wind power generation concrete tower drum, through setting up the reinforcing column (door hole reinforcing side column) and reinforcing crossbeam (door hole reinforcing crossbeam) with the wall of the drum being integrated on both sides and top of the door hole, the reinforcing section of the reinforcing column and the weakened door hole section are basically same, the reinforcing crossbeam and the thickness of the wall of the drum are connected through the taper surface gentle transition, form the door type frame of greater rigidity, constrain the deformation of the door hole, through the implementation of the reinforcing measure, can effectively reinforce the weakened position of the door hole, thereby inhibiting the generation and development of the door hole surrounding concrete crack.

[0007] Further, the cross section of the door hole reinforcing crossbeam protruding towards the inside of the tower drum and the cross section of the door hole reinforcing crossbeam protruding towards the outside of the tower drum have the same width.

[0008] Further, the cross section of the door hole reinforcing crossbeam protruding towards the inside of the tower drum and the cross section of the door hole reinforcing crossbeam protruding towards the outside of the tower drum have the same width.

[0009] Further, the door hole reinforcing crossbeam and the bottom drum section are connected through taper surface gentle transition; the door hole reinforcing side column and the bottom drum section are connected through taper surface gentle transition.

[0010] Further, the door hole reinforcing crossbeam and the door hole reinforcing side column are connected through gentle transition.

[0011] The utility model discloses a door hole and concrete tower for prefabricated assembly type wind power generation concrete tower drum, through setting up the reinforcing column (door hole reinforcing side column) and reinforcing crossbeam (door hole reinforcing crossbeam) with the wall of the drum being integrated on both sides and top of the door hole, the reinforcing section of the reinforcing column and the weakened door hole section are basically same, the reinforcing crossbeam and the thickness of the wall of the drum are connected through the taper surface gentle transition, form the door type frame of greater rigidity, constrain the deformation of the door hole, through the implementation of the reinforcing measure, can effectively reinforce the weakened position of the door hole, thereby inhibiting the generation and development of the door hole surrounding concrete crack.

[0012] Further, the prefabricated assembly type wind power generation concrete tower drum further comprises an upper drum section, and the upper drum section is arranged above the bottom drum section.

[0013] The upper barrel section and the bottom barrel section are connected by barrel section horizontal seams.

[0014] Further, the upper barrel section comprises upper barrel section pieces, upper barrel section pieces of the same height are circumferentially spliced by barrel section vertical seams and then stacked along the height direction; the barrel section vertical seams are arranged staggered with the door opening in the vertical direction.

[0015] Further, the door opening reinforcing cross beam is enlarged downward from the barrel section horizontal seam above the door opening.

[0016] Further, the prefabricated assembly type wind power generation concrete tower is provided with a steel strand; the steel strand is distributed circumferentially along the tower wall of the prefabricated assembly type wind power generation concrete tower.

[0017] Further, the prefabricated assembly type wind power generation concrete tower further comprises a wind turbine tower hollow foundation; the door opening of the prefabricated assembly type wind power generation concrete tower is arranged on the top surface of the wind turbine tower hollow foundation.

[0018] Further, the wind turbine tower hollow foundation comprises a column pier; the door opening reinforcing side column falls on the top surface of the column pier of the wind turbine tower hollow foundation.

[0019] Further, the reinforcing method for the door opening of the prefabricated assembly type wind power generation concrete tower comprises the following steps:

[0020] S1, a bottom barrel section of a prefabricated assembly type wind power generation concrete tower is made; the two side edges of the door opening on the bottom barrel section of the prefabricated assembly type wind power generation concrete tower are parallel to each other; a door opening reinforcing cross beam is arranged above the door opening; the cross-sectional width of the door opening reinforcing cross beam is increased by protruding towards the inside of the tower and protruding towards the outside of the tower; the door opening reinforcing cross beam is transitionally connected with the bottom barrel section;

[0021] S2, door opening reinforcing side columns protruding towards the inside of the tower and the outside of the tower are additionally arranged on the left and right sides of the door opening; the door opening reinforcing side columns are transitionally connected with the bottom barrel section; the door opening reinforcing side columns on the two sides of the door opening and the door opening reinforcing cross beam above the door opening form a door frame, and a bottom barrel section of a prefabricated assembly type wind power generation concrete tower which is not assembled is obtained;

[0022] S3, the bottom barrel section which is not assembled (not assembled on site) is assembled; the door opening on the bottom barrel section of the prefabricated assembly type wind power generation concrete tower is arranged on the top surface of the wind turbine tower hollow foundation, facilitating the opening and closing of the door; the door opening reinforcing side columns directly fall on the top surface of the column pier of the wind turbine tower hollow foundation.

[0023] Further, in step S1, the door opening reinforcing cross beam is transitionally connected with the bottom barrel section by a tapered surface.

[0024] Further, in step S2, the door hole reinforcing edge column and the bottom cylinder section are connected through a conical surface.

[0025] Further, before step S3, there is a further step of making other cylinder sections of the prefabricated assembly type wind power generation concrete tower cylinder, the other cylinder sections being the cylinder sections above the bottom cylinder section.

[0026] Further, in step S3, when assembled on site, the bottom cylinder section and the cylinder sections above of the prefabricated assembly type wind power generation concrete tower cylinder are connected through cylinder section horizontal joints; the cylinder section horizontal joints are arranged above the door hole; the door hole reinforcing cross beam expands downward from the cylinder section horizontal joints above the door hole.

[0027] Further, after step S3, other cylinder sections of the prefabricated assembly type wind power generation concrete tower cylinder are assembled with the bottom cylinder section on site. Further, the cylinder sections above the bottom cylinder section of the prefabricated assembly type wind power generation concrete tower cylinder are provided with cylinder section vertical joints; the cylinder section vertical joints are arranged in the vertical direction and staggered with the door hole.

[0028] Further, the vertical joints of the split pieces of the bottom cylinder section are arranged in the vertical direction and staggered with the cylinder section vertical joints.

[0029] Further, the split pieces of the bottom cylinder section are circumferentially spliced, and the door hole reinforcing edge column and the door hole reinforcing cross beam are on the same split piece.

[0030] Further, the prefabricated assembly type wind power generation concrete tower cylinder is provided with a steel strand; the steel strand is distributed circumferentially along the tower cylinder wall of the prefabricated assembly type wind power generation concrete tower cylinder.

[0031] Further, in step S2, the reinforcing cross section of the door hole reinforcing edge column and the weakened door hole cross section are substantially the same.

[0032] Further, in step S1, the cross section of the door hole reinforcing cross beam protruding towards the inside of the tower cylinder and the cross section of the door hole reinforcing cross beam protruding towards the outside of the tower cylinder have the same width; in step S2, the cross section of the door hole reinforcing edge column protruding towards the inside of the tower cylinder and the cross section of the door hole reinforcing edge column protruding towards the outside of the tower cylinder have the same width.

[0033] Further, the door is connected to the embedded part of the side of the door hole through a bolt.

[0034] Further, after the door hole of the prefabricated assembly type wind power generation concrete tower cylinder is obtained, a movable or fixed door sill is arranged and waterproof treatment is performed.

[0035] Further, the height of the cylinder section of the prefabricated assembly type wind power generation concrete tower cylinder is usually between 3m-3.6m.

[0036] Furthermore, the diameter of the bottom cylinder section is generally around 7m-10m; the width of the doorway is generally around 0.8m-1.2m; and the thickness of the prefabricated assembled wind power concrete tower is generally 240-350mm.

[0037] Furthermore, the height of the reinforcing beam for the doorway should be as high as possible, provided that the opening height of the doorway and the transportation conditions of the bottom cylinder section are met.

[0038] Furthermore, the diameter of the upper side of the bottom cylinder section is smaller than the diameter of the lower side, and the diameter of the bottom cylinder section gradually increases from top to bottom.

[0039] Furthermore, the prefabricated concrete tower for wind power generation is prefabricated in the factory and assembled on site.

[0040] Furthermore, the doorway reinforcement columns on both sides of the doorway and the doorway reinforcement beam above the doorway form a door-shaped frame through templates, a process prefabricated in the factory. The prefabrication process includes: 1. Mold making: determining the design dimensions and shape of the prefabricated assembled wind turbine concrete tower and making matching molds; 2. Concrete pouring: pouring concrete into the molds; 3. Curing; 4. Mold removal: when the concrete reaches the design strength, removing the molds to obtain the unassembled components of the prefabricated assembled wind turbine concrete tower.

[0041] Furthermore, step S3 is carried out on-site. The specific process is as follows: the segments of the bottom cylinder of the prefabricated assembled wind turbine concrete tower are assembled into a complete ring on the tooling next to the turbine location, and then the assembled bottom cylinder is hoisted onto the top surface of the hollow foundation of the wind turbine tower by a crane.

[0042] This utility model involves directly opening a doorway on the bottom section of a prefabricated assembled wind turbine concrete tower onto the top surface of the hollow foundation of the wind turbine tower. The two sides of the doorway are parallel to each other, facilitating the opening and closing of the door. Figure 2 The main purpose is to increase the distance between the upper edge and the transverse seam of the cylinder section, and to increase the height and rigidity of the hidden beam above the doorway, i.e., the doorway reinforcing beam, by increasing the cross-sectional width of the doorway reinforcing beam by protruding towards the inner and outer sides of the cylinder wall. Figure 3 Reinforcing side columns are added to the left and right sides of the doorway, protruding towards the inner and outer sides of the cylinder wall. The dimensions of the reinforcing side columns are determined by calculation. Figure 4 The reinforced side posts on both sides of the doorway and the reinforced crossbeam above the doorway form a highly rigid portal frame. Figure 5 This design allows the forces from the upper cylindrical section to be smoothly transferred to the concrete around the portal frame, alleviating stress concentration around the portal. Extensive finite element analysis has fully validated the effectiveness of this reinforcement scheme.

[0043] In the utility model, the door hole reinforcing edge column and the door hole reinforcing crossbeam above the door hole are simultaneously protruded to the inside and outside of the cylinder, the size of the door hole reinforcing edge column and the door hole reinforcing crossbeam and the reinforcement thereof are determined according to calculation, the transition surface between the cylinder wall and the door hole reinforcing crossbeam and the door hole reinforcing edge column is relatively gentle and is a plane, Figure 6 The door type frame is rigid and powerful in appearance, and the inner and outer rigidity is uniform, so that the formwork processing and manufacturing are facilitated.

[0044] In the utility model, the traditional steel door frame with nails is not arranged at the door hole, and the weakening of the door hole is reinforced by the door hole reinforcing edge column and the door hole reinforcing crossbeam.

[0045] Further, the door hole lower part is disconnected, and the door hole reinforcing edge column is directly arranged on the top surface of the foundation column pier to increase the height of the door hole reinforcing crossbeam above the door hole.

[0046] Further, the door hole reinforcing edge column and the door hole reinforcing crossbeam are simultaneously protruded to the inside and outside of the tower cylinder to increase the cross section, and the inner and outer rigidity is uniform. The transition surface between the door hole reinforcing edge column and the door hole reinforcing crossbeam and the cylinder wall is a plane.

[0047] Compared with the prior art, the utility model has the following beneficial effects:

[0048] 1) The door hole for the prefabricated assembly type wind power generation concrete tower cylinder provided by the technical scheme solves the common concrete cracking problem below the conventional door hole, increases the height and rigidity of the door hole reinforcing crossbeam, and the door hole reinforcing edge column directly falls on the top surface of the wind turbine tower hollow foundation column pier.

[0049] 2) The door hole for the prefabricated assembly type wind power generation concrete tower cylinder provided by the technical scheme forms the door type frame with great rigidity, effectively solves the transmission of the door hole peripheral force and the stress concentration problem.

[0050] 3) The door hole for the prefabricated assembly type wind power generation concrete tower cylinder provided by the technical scheme is simultaneously protruded to the inside and outside of the cylinder, the inner and outer rigidity is uniform, the stress performance is excellent, and the stability is high, so that the cracking is not prone to occur.

[0051] 4) The door hole for the prefabricated assembly type wind power generation concrete tower cylinder provided by the technical scheme is a plane, and the formwork processing and manufacturing are facilitated.

[0052] 5) The door hole for the prefabricated assembly type wind power generation concrete tower provided by the technical scheme is provided with the reinforcing columns (door hole reinforcing side columns) and the reinforcing cross beams (door hole reinforcing cross beams) which are integrated with the cylinder wall on both sides of the door hole and above the door hole, the reinforcing section of the reinforcing columns is basically the same as the weakened section of the door hole, the reinforcing cross beams and the thickness of the tower cylinder wall are gently transitioned through the conical surface, the door type frame with large rigidity is formed, the deformation of the door hole is constrained, and the implementation of the reinforcing measures can effectively reinforce the weakened position of the door hole, so that the generation and development of the concrete cracks around the door hole are inhibited. BRIEF DESCRIPTION OF DRAWINGS

[0053] Figure 1 It is a common tower door method schematic diagram.

[0054] Figure 2 It is a connection schematic diagram of the prefabricated assembly type wind power generation concrete tower and the wind turbine tower hollow foundation in the utility model.

[0055] Figure 3 It is a 1-1 sectional view in the Figure 2

[0056] Figure 4 It is a 2-2 sectional view in the Figure 2

[0057] Figure 5 It is a three-dimensional structure schematic diagram of the bottom cylinder section in the utility model.

[0058] Figure 6 It is a 3-3 sectional view in the Figure 4

[0059] Mark in the figure:

[0060] 1, prefabricated assembly type wind power generation concrete tower, 2, wind turbine tower hollow foundation, 3, bottom cylinder section, 4, door hole, 5, door hole reinforcing side column, 6, door hole reinforcing cross beam, 7, tower cylinder outer side, 8, tower cylinder inner side, 9, cylinder section horizontal seam, 10, cylinder section vertical seam, 11, steel strand. DETAILED DESCRIPTION

[0061] The utility model will be described in detail in combination with the drawings and specific embodiments. The components model, material name, connection structure, control method, algorithm and other features not explicitly stated in the technical scheme are regarded as the common technical features disclosed in the prior art.

[0062] ​​​In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can indirectly connect through the intermediate medium, can be the communication or the interaction of two elements between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0063] It should be noted that, in the utility model, relational terms such as first and second and the like are used merely to distinguish one entity or action from another entity or action without necessarily requiring or implying that there is any such actual relationship or order between these entities or actions. Also, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the phrase "comprising a..." does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0064] The content of the utility model will be further described in detail below in conjunction with specific embodiments.

[0065] Embodiment 1

[0066] As Figures 1 to 6 shown, a door hole for prefabricated assembly type wind power generation concrete tower, the door hole 4 is used for prefabricated assembly type wind power generation concrete tower 1, the prefabricated assembly type wind power generation concrete tower 1 includes bottom cylinder section 3, the door hole 4 is connected with bottom cylinder section 3, the inside of the prefabricated assembly type wind power generation concrete tower 1 is tower inside 8, and the outside of the prefabricated assembly type wind power generation concrete tower 1 is tower outside 7, characterized by, the door hole 4 includes door hole reinforcing edge column 5 and door hole reinforcing crossbeam 6;Door hole reinforcing crossbeam 6 is located above door hole 4;Door hole reinforcing edge column 5 is located on the left and right sides of door hole 4;The door hole reinforcing crossbeam 6 is convex to tower inside 8 and convex to tower outside 7;The door hole reinforcing edge column 5 is convex to tower inside 8 and convex to tower outside 7.

[0067] The cross section of the door hole reinforcing crossbeam 6 convex to tower inside 8 and the cross section of the door hole reinforcing crossbeam 6 convex to tower outside 7 have the same width.

[0068] The cross section of the door hole reinforcing edge column 5 convex to tower inside 8 and the cross section of the door hole reinforcing edge column 5 convex to tower outside 7 have the same width.

[0069] The door hole reinforcing cross beam 6 and the bottom cylinder section 3 are connected through a tapered flat transition.

[0070] The door hole reinforcing cross beam 6 and the door hole reinforcing edge column 5 are connected through a flat transition.

[0071] The embodiment provides a prefabricated assembly type wind power generation concrete tower, which comprises a prefabricated assembly type wind power generation concrete tower cylinder 1; the prefabricated assembly type wind power generation concrete tower cylinder 1 comprises a door hole 4 and a bottom cylinder section 3; the door hole 4 and the bottom cylinder section 3 are connected through a door hole reinforcing edge column 5 and a door hole reinforcing cross beam 6.

[0072] The prefabricated assembly type wind power generation concrete tower cylinder 1 further comprises an upper cylinder section, which is arranged above the bottom cylinder section 3; the upper cylinder section and the bottom cylinder section 3 are connected through a cylinder section horizontal joint 9. The upper cylinder section comprises upper cylinder section pieces, upper cylinder section pieces at the same height are annularly spliced through a cylinder section vertical joint 10 and then stacked along the height direction; the cylinder section vertical joint 10 is arranged in a staggered manner in the vertical direction with the door hole 4.

[0073] The door hole reinforcing cross beam 6 is enlarged downward from the cylinder section horizontal joint 9 above the door hole 4.

[0074] The prefabricated assembly type wind power generation concrete tower cylinder 1 is provided with a steel strand 11; the steel strand 11 is distributed in the circumferential direction of the tower cylinder wall of the prefabricated assembly type wind power generation concrete tower cylinder 1.

[0075] The prefabricated assembly type wind power generation concrete tower further comprises a wind turbine tower hollow foundation 2; the door hole 4 of the prefabricated assembly type wind power generation concrete tower cylinder 1 is arranged on the top surface of the wind turbine tower hollow foundation 2.

[0076] The wind turbine tower hollow foundation 2 comprises a column pier; the door hole reinforcing edge column 5 falls on the top surface of the column pier of the wind turbine tower hollow foundation 2.

[0077] The embodiment further provides a reinforcing method for a door hole of a prefabricated assembly type wind power generation concrete tower cylinder, which comprises the following steps:

[0078] S1, a bottom cylinder section 3 of a prefabricated assembly type wind power generation concrete tower 1 is manufactured in a factory, two side edges of a door hole 4 on the bottom cylinder section 3 of the prefabricated assembly type wind power generation concrete tower 1 are parallel to each other, facilitating opening and closing of a door, a door hole reinforcing cross beam 6 is arranged above the door hole 4, the cross-sectional width of the door hole reinforcing cross beam 6 is increased by protruding towards the inside 8 and the outside 7 of the tower, the door hole reinforcing cross beam 6 is connected to the bottom cylinder section 3 through a tapered surface, the reinforcing cross section of the door hole reinforcing side column 5 is basically the same as the weakened door hole cross section, wherein the cross-sectional width of the door hole reinforcing cross beam 6 protruding towards the inside 8 and the outside 7 of the tower is the same;

[0079] S2, door hole reinforcing side columns 5 protruding towards the inside 8 and the outside 7 of the tower are additionally arranged on the left and right sides of the door hole 4, wherein the cross-sectional width of the door hole reinforcing side column 5 protruding towards the inside 8 and the outside 7 of the tower is the same, the door hole reinforcing side column 5 is connected to the bottom cylinder section 3 through a tapered surface, the door hole reinforcing side column 5 on the left and right sides of the door hole 4 and the door hole reinforcing cross beam 6 above the door hole 4 form a door frame, obtaining the bottom cylinder section 3 of the prefabricated assembly type wind power generation concrete tower 1 which is not assembled;

[0080] S3, other cylinder sections of the prefabricated assembly type wind power generation concrete tower 1 are manufactured in the factory, the other cylinder sections are cylinder sections above the bottom cylinder section 3;

[0081] S4, the prefabricated assembly type wind power generation concrete tower 1 is assembled on site, the door hole 4 on the bottom cylinder section 3 of the prefabricated assembly type wind power generation concrete tower 1 is arranged on the top surface of the wind turbine tower hollow foundation 2, the two side edges of the door hole 4 are parallel to each other, facilitating opening and closing of the door, the door hole reinforcing side column 5 is directly placed on the top surface of the wind turbine tower hollow foundation 2 column pier;

[0082] S5, the other cylinder sections of the prefabricated assembly type wind power generation concrete tower 1 are assembled with the bottom cylinder section 3 on site.

[0083] The bottom cylinder section 3 of the prefabricated assembly type wind power generation concrete tower 1 is connected to the cylinder section above through a cylinder section horizontal joint 9; the cylinder section horizontal joint 9 is arranged above the door hole 4; the door hole reinforcing cross beam 6 starts to expand downward from the cylinder section horizontal joint 9 above the door hole 4.

[0084] The cylinder section above the bottom cylinder section 3 of the prefabricated assembly type wind power generation concrete tower 1 is provided with a cylinder section vertical joint 10; the cylinder section vertical joint 10 is arranged in a staggered manner in the vertical direction with the door hole 4.

[0085] The vertical joint of the segment of the bottom cylinder section 3 is arranged in a staggered manner in the vertical direction with the cylinder section vertical joint 10, and the door hole reinforcing side column 5 and the door hole reinforcing cross beam 6 are on the same segment.

[0086] The prefabricated assembly type wind power generation concrete tower 1 is provided with a steel strand 11; the steel strand 11 is distributed along the circumferential direction of the tower wall of the prefabricated assembly type wind power generation concrete tower 1.

[0087] The tower door is connected with the embedded parts of the side edges of the door hole 4 through bolts, and the steel plates of the embedded parts can be fixed on the side edges of the door hole through anchoring into the anchor bars of the bottom tower section concrete.

[0088] The diameter of the bottom tower section 3 is generally about 7m-10m; the width of the door hole 4 is generally about 0.8m-1.2m; and the thickness of the prefabricated assembly type wind power generation concrete tower 1 is generally 240-350mm. The diameter of the upper side of the bottom tower section 3 is smaller than that of the lower side, and the diameter of the bottom tower section 3 gradually increases from top to bottom.

[0089] The prefabricated assembly type wind power generation concrete tower 1 is completed in a factory, and is assembled on site.

[0090] The door-type frame formed by the door hole reinforcing edge columns 5 on both sides of the door hole 4 and the door hole reinforcing cross beams 6 above the door hole 4 is realized through a formwork, and the process is completed in a factory. The prefabrication process includes: 1, mold making, determining the design size and shape of the prefabricated assembly type wind power generation concrete tower 1, and making a mold matched therewith; 2, concrete pouring, pouring concrete into the mold; 3, curing; 4, mold removal, removing the mold when the concrete reaches the design strength, and obtaining the unassembled parts of the prefabricated assembly type wind power generation concrete tower 1.

[0091] Step S4 is performed on site, and the specific process is: assembling the segments of the bottom tower section 3 of the prefabricated assembly type wind power generation concrete tower 1 into a whole ring on the work tool beside the machine position, and then hoisting the assembled bottom tower section 3 to the top surface of the wind turbine tower hollow foundation 2 by a crane.

[0092] The embodiment further provides a door hole for a prefabricated assembly type wind power generation concrete tower, which is the door hole 4, and the door hole 4 includes door hole reinforcing edge columns 5 and door hole reinforcing cross beams 6. The door hole reinforcing cross beams 6 are arranged above the door hole 4, and the door hole reinforcing edge columns 5 are arranged on the left and right sides of the door hole 4. The door hole reinforcing cross beams 6 protrude towards the inner side 8 of the tower and the outer side 7 of the tower, and the door hole reinforcing edge columns 5 protrude towards the inner side 8 of the tower and the outer side 7 of the tower. The cross section of the door hole reinforcing cross beams 6 protruding towards the inner side 8 of the tower has the same width as the cross section of the door hole reinforcing cross beams 6 protruding towards the outer side 7 of the tower, and the cross section of the door hole reinforcing edge columns 5 protruding towards the inner side 8 of the tower has the same width as the cross section of the door hole reinforcing edge columns 5 protruding towards the outer side 7 of the tower.

[0093] The utility model discloses a door hole of prefabricated assembly type wind power generation concrete tower drum, which is directly arranged on the top surface of the wind turbine tower hollow foundation. Figure 2 The cross-sectional width of the door hole reinforcing cross beam 6 is increased by protruding to the inner side and the outer side of the drum wall. Figure 3 The door hole reinforcing side column 5 is additionally arranged on the left and right sides of the door hole 4 and protrudes to the inner side and the outer side of the drum wall. Figure 4 The door hole reinforcing side column 5 on the two sides of the door hole and the door hole reinforcing cross beam 6 above the door hole form a door-shaped frame with great rigidity. Figure 5 The force of the upper drum section can be smoothly transmitted to the concrete around the door hole 4 through the door-shaped frame, thereby relieving the stress concentration phenomenon around the door hole.

[0094] In the utility model, the door hole reinforcing side column 5 on the two sides of the door hole 4 and the door hole reinforcing cross beam 6 above the door hole protrude to the inside and outside of the drum at the same time. Figure 6 The size and reinforcement of the door hole reinforcing side column 5 and the door hole reinforcing cross beam 6 are determined according to calculation.

[0095] Embodiment 2

[0096] The embodiment provides a door hole of prefabricated assembly type wind power generation concrete tower drum.

[0097] A movable or fixed door sill is arranged between the door hole reinforcing side columns 5.

[0098] The above description of the embodiments is for the convenience of the ordinary skilled person in the art to understand and use the utility model. The skilled person in the art can easily make various modifications to the embodiments and apply the general principles described herein to other embodiments without creative labor. Therefore, the utility model is not limited to the above embodiments, and the improvements and modifications made by the skilled person in the art without departing from the scope of the utility model should be within the protection scope of the utility model.

Claims

1. A door opening for a precast assembled wind power concrete tower, the door opening (4) for a precast assembled wind power concrete tower (1), the precast assembled wind power concrete tower (1) comprising a bottom tower section (3), the door opening (4) being connected to the bottom tower section (3), the inside of the precast assembled wind power concrete tower (1) being a tower inside (8), the outside of the precast assembled wind power concrete tower (1) being a tower outside (7), characterized in that, The door hole (4) comprises door hole reinforcing edge columns (5) and door hole reinforcing cross beams (6); The door hole reinforcing cross beams (6) are arranged above the door hole (4); The door hole reinforcing edge columns (5) are arranged on the left and right sides of the door hole (4); The door hole reinforcing cross beams (6) protrude towards the inside (8) and the outside (7) of the tower drum; The door hole reinforcing edge columns (5) protrude towards the inside (8) and the outside (7) of the tower drum.

2. A door opening for a precast wind power concrete tower according to claim 1, characterized in that The cross section of the door hole reinforcing cross beams (6) protruding towards the inside (8) of the tower drum has the same width as the cross section of the door hole reinforcing cross beams (6) protruding towards the outside (7) of the tower drum; The cross section of the door hole reinforcing edge columns (5) protruding towards the inside (8) of the tower drum has the same width as the cross section of the door hole reinforcing edge columns (5) protruding towards the outside (7) of the tower drum.

3. A door opening for a precast wind power concrete tower according to claim 1, characterized in that The door hole reinforcing cross beams (6) are connected to the bottom drum section (3) through a tapered surface. The door hole reinforcing edge columns (5) are connected to the bottom drum section (3) through a tapered surface. The door hole reinforcing cross beams (6) are connected to the door hole reinforcing edge columns (5) through a tapered surface.

4. A prefabricated wind power concrete tower, characterized in that The prefabricated wind power generation concrete tower comprises a prefabricated wind power generation concrete tower drum (1); The prefabricated wind power generation concrete tower drum (1) comprises the door hole (4), the bottom drum section (3) and the door hole reinforcing edge columns (5) and the door hole reinforcing cross beams (6) as claimed in any one of claims 1-3. The door hole (4) is connected to the bottom drum section (3) through the door hole reinforcing edge columns (5) and the door hole reinforcing cross beams (6).

5. The prefabricated wind power concrete tower according to claim 4, characterized in that, The prefabricated wind power generation concrete tower drum (1) further comprises an upper drum section arranged above the bottom drum section (3); The upper drum section is connected to the bottom drum section (3) through a drum section horizontal joint (9).

6. A prefabricated wind power concrete tower according to claim 5, characterized in that, The upper drum section comprises upper drum section pieces, and upper drum section pieces at the same height are connected in a ring shape through a drum section vertical joint (10) and then stacked along the height direction. The drum section vertical joint (10) is arranged in a staggered manner in the vertical direction with the door hole (4).

7. The prefabricated wind power concrete tower according to claim 5, characterized in that, The door hole reinforcing cross beams (6) are enlarged downward from the drum section horizontal joint (9) above the door hole (4).

8. The prefabricated wind power concrete tower according to claim 4, characterized in that, The prefabricated wind power generation concrete tower drum (1) is provided with a steel strand (11); The steel strand (11) is distributed in a circumferential direction of the tower drum wall of the prefabricated wind power generation concrete tower drum (1).

9. The prefabricated wind power concrete tower according to claim 4, characterized in that, The prefabricated wind power generation concrete tower further comprises a wind turbine tower hollow foundation (2); The door hole (4) of the prefabricated wind power generation concrete tower drum (1) is arranged on the top surface of the wind turbine tower hollow foundation (2).

10. The prefabricated wind power concrete tower according to claim 9, characterized in that, The wind turbine tower hollow foundation (2) comprises a column pier; The door hole reinforcing edge columns (5) fall on the top surface of the column pier of the wind turbine tower hollow foundation (2).

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