CN111368411A - Balanced type tower foundation and design method and design device thereof - Google Patents
Balanced type tower foundation and design method and design device thereof Download PDFInfo
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- CN111368411A CN111368411A CN202010125191.XA CN202010125191A CN111368411A CN 111368411 A CN111368411 A CN 111368411A CN 202010125191 A CN202010125191 A CN 202010125191A CN 111368411 A CN111368411 A CN 111368411A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
Abstract
The invention provides a balanced type pole tower foundation and a design method and a design device thereof, wherein the pole tower foundation comprises the following components: the tower foundation body is arranged above the hollow cambered surface annular bottom plate; a plurality of pile foundations are uniformly arranged on the upper surface of the tower foundation body, and the bottom surface of the tower foundation body is a spherical crown cambered surface; the hollow cambered surface annular bottom plate is of an annular structure, the upper surface of the hollow cambered surface annular bottom plate is an inwards concave cambered surface, and the curvature radius of the spherical crown cambered surface is consistent with that of the inwards concave cambered surface. According to the balanced type tower foundation and the design method and device thereof provided by the embodiment of the invention, when one side of the tower foundation is collapsed, the tower foundation body keeps balance and vertically subsides downwards under the combined action of the lever prying force and the pressure of soil, so that the tower foundation is ensured not to incline or to be slowly inclined, the damage of uneven settlement to the tower foundation is effectively reduced, and the capability of resisting the collapse deformation of a foundation is improved.
Description
Technical Field
The invention relates to the technical field of tower foundations, in particular to a balanced type tower foundation and a design method and a design device thereof.
Background
At present, a tower foundation in a power transmission line is used for stabilizing the power transmission tower and preventing the power transmission tower from being pulled up, pressed down or overturned, inclined and the like due to the action of external force. Under some scenes, the power transmission line needs to be erected near a goaf, and the goaf damages the power transmission line, firstly, the foundation deformation starts, and the foundation collapse load is transmitted to the tower foundation, so that the tower foundation inclines, displaces and deforms. When the inclination, displacement or deformation of the tower foundation exceeds the limit value specified by regulations and specifications, the tower inclination of the transmission line, the inclination of an insulator string, the damage of tower components and even the vicious accidents of pole falling, line breaking and the like can be caused.
The existing goaf transmission line tower foundation is generally a traditional gravity type foundation, has good stability in areas such as plains and the like, but cannot be completely suitable for goaf scenes. In order to avoid and reduce deformation disaster loss caused by goaf collapse, the capability of the tower foundation for resisting foundation deformation needs to be improved, and the conventional tower foundation does not meet the requirement at present.
Disclosure of Invention
In order to solve the above problems, embodiments of the present invention provide a balanced tower foundation, and a design method and a design apparatus thereof.
In a first aspect, an embodiment of the present invention provides a balanced tower foundation, including: the tower foundation body is arranged above the hollow cambered surface annular bottom plate;
a plurality of pile foundations are uniformly arranged on the upper surface of the tower foundation body, and the bottom surface of the tower foundation body is a spherical crown cambered surface;
the hollow cambered surface annular bottom plate is of an annular structure, the upper surface of the hollow cambered surface annular bottom plate is an inwards concave cambered surface, and the curvature radius of the spherical crown cambered surface is consistent with that of the inwards concave cambered surface.
On the basis of the embodiment, the tower foundation body comprises a columnar foundation and a spherical crown foundation which are arranged up and down;
the outer side of the hollow cambered surface annular bottom plate is also provided with an expansion structure.
In a second aspect, an embodiment of the present invention provides a method for designing a balanced tower foundation, including:
determining basic parameters of a tower foundation, wherein the basic parameters comprise tower foundation opening;
determining the size parameters of a tower foundation body according to the foundation parameters, wherein the size parameters of the tower foundation body comprise the curvature radius of a spherical crown cambered surface of the bottom surface, the bottom surface radius of the spherical crown cambered surface and the thickness of the tower foundation body;
determining the size parameter of a hollow cambered surface annular bottom plate according to the size parameter of the tower foundation body, wherein the size parameter of the hollow cambered surface annular bottom plate comprises the curvature radius of an inwards concave cambered surface on the upper surface, and the curvature radius of the inwards concave cambered surface is consistent with the curvature radius of the spherical crown cambered surface;
and generating a design scheme according to the size parameters of the tower foundation body and the size parameters of the hollow cambered surface annular bottom plate.
On the basis of the above embodiment, the determining the size parameter of the tower foundation body according to the foundation parameter includes:
determining the bottom surface radius r of the spherical crown cambered surface according to the basic parameters;
determining the thickness H of the tower foundation body according to a preset uplifting force F1And the gravity G of the tower foundation body is greater than the pull-up force F;
according to the radius r of the bottom surface of the spherical crown cambered surface and the thickness H of the tower foundation body1Determining the curvature radius R of the spherical crown cambered surface1。
On the basis of the embodiment, the thickness H of the tower foundation body is determined according to the preset uplifting force F1The method comprises the following steps:
determining the minimum thickness H of the tower foundation body according to the preset pull-up force FminAnd is and
wherein the content of the first and second substances,
h1the thickness of the columnar foundation is represented, and rho represents the volume weight of the tower foundation body;
determining the thickness H of the tower foundation body1And H is1＞Hmin。
On the basis of the above embodiment, the method further includes:
and determining material information of the tower foundation body, wherein the material information comprises one or more of concrete strength grade, reinforcement scheme and reinforcement ratio.
On the basis of the above embodiment, the determining the size parameter of the hollow cambered annular bottom plate according to the size parameter of the tower foundation body includes:
according to the curvature radius R of the cambered surface of the spherical crown1Determining the radius of curvature R of the concave camber surface2And R is1＝R2；
Determining the diameter phi 1 of the outer ring of the annular bottom plate of the hollow cambered surface according to the radius r of the bottom surface of the spherical crown cambered surface, wherein the phi 1 is more than or equal to 2 r;
according to the curvature radius R of the concave cambered surface2Determining the diameter phi 1 of the outer ring of the hollow cambered surface annular bottom plate and the preset proportional relation to determine the diameter phi 2 of the inner ring and the thickness H of the outer ring of the hollow cambered surface annular bottom plate2And inner ring thickness H3。
In a third aspect, an embodiment of the present invention further provides a device for designing a balanced tower foundation, where the device includes:
the base parameter determining module is used for determining base parameters of a tower base, wherein the base parameters comprise tower base follow-up;
the first size parameter determining module is used for determining size parameters of a tower foundation body according to the foundation parameters, and the size parameters of the tower foundation body comprise the curvature radius of a spherical crown cambered surface of a bottom surface, the bottom surface radius of the spherical crown cambered surface and the thickness of the tower foundation body;
the second size parameter determining module is used for determining the size parameter of the hollow cambered surface annular bottom plate according to the size parameter of the tower foundation body, wherein the size parameter of the hollow cambered surface annular bottom plate comprises the curvature radius of an inwards concave cambered surface on the upper surface, and the curvature radius of the inwards concave cambered surface is consistent with the curvature radius of the spherical crown cambered surface;
and the scheme generation module is used for generating a design scheme according to the size parameters of the tower foundation body and the size parameters of the hollow cambered surface annular bottom plate.
In a fourth aspect, an embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores computer-executable instructions, and the computer-executable instructions are used in any one of the above design methods for a balanced tower foundation.
In a fifth aspect, an embodiment of the present invention further provides an electronic device, including:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor, and the instructions are executable by the at least one processor to enable the at least one processor to perform any one of the above design methods for a balanced tower foundation.
In the scheme provided by the first aspect of the embodiment of the invention, when one side of the tower foundation collapses, because the weight of the outer ring of the hollow arc-surface annular bottom plate is greater than that of the inner ring, the outer ring collapses firstly, and the intersection point of the concave arc surface on the side which does not collapse or collapses later and the spherical crown arc surface of the tower foundation body just forms the fulcrum of the hollow arc-surface annular bottom plate, so that the hollow arc-surface annular bottom plate becomes a lever, the tower foundation body enables the tower foundation to keep balance and vertically settle downwards under the combined action of lever prying force and soil pressure, the tower foundation is ensured not to incline or slow down, the damage of uneven settlement to the tower foundation is effectively reduced, the foundation root opening stability is ensured to be unchanged, the foundation collapse deformation resistance of the transmission line foundation is improved, and the foundation is ensured not to deform or incline.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic side view of a balanced tower foundation according to an embodiment of the present invention;
fig. 2 is a schematic side view of a tower foundation body in the balanced tower foundation provided in the embodiment of the present invention;
fig. 3 is a schematic top view of a tower foundation body in the balanced tower foundation provided in the embodiment of the present invention;
fig. 4 is a schematic side view of a hollow arc-shaped annular bottom plate in a balanced tower foundation provided by an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a force analysis of a balanced tower foundation provided by an embodiment of the present invention when the right side is collapsed;
fig. 6 shows a flowchart of a method for designing a balanced tower foundation according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram illustrating a design apparatus of a balanced tower foundation according to an embodiment of the present invention;
fig. 8 shows a schematic structural diagram of an electronic device for executing the design method of the balanced tower foundation according to the embodiment of the present invention.
Icon:
10-a tower foundation body, 11-a pile foundation, 111-foundation bolts, 12-a spherical crown cambered surface, 20-a hollow cambered surface annular bottom plate, 21-an inwards concave cambered surface, 22-a hollow structure and 30-an expansion structure.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, the balanced tower foundation provided in the embodiment of the present invention includes: the tower foundation body 10 is arranged above the hollow cambered surface annular bottom plate 20. As shown in fig. 1, a plurality of pile foundations 11 are uniformly arranged on the upper surface of a tower foundation body 10, and the bottom surface of the tower foundation body 10 is a spherical crown cambered surface 12; the hollow cambered surface annular bottom plate 20 is of an annular structure, the upper surface of the hollow cambered surface annular bottom plate 20 is an inwards concave cambered surface 21, and the curvature radius of the spherical crown cambered surface 12 is consistent with that of the inwards concave cambered surface 21.
In the embodiment of the invention, the balanced iron tower foundation mainly comprises an upper part and a lower part, namely a tower foundation body 10 and a hollow cambered annular bottom plate 20. Wherein, the surface of the tower foundation body 10 is provided with a plurality of pile foundations 11 for supporting the iron tower; referring to fig. 2 and 3, the pile foundations 11 may be uniformly distributed on the surface of the tower foundation body 10, and the top view of fig. 3 illustrates an example in which four pile foundations 11 are uniformly arranged. Optionally, the pile foundation 11 is further provided with a plurality of anchor bolts 111 for fixing the iron tower. Meanwhile, the bottom surface of the tower foundation body 10 is a spherical crown cambered surface 12, that is, the bottom surface is a part of a spherical surface.
Correspondingly, the upper surface of the hollow arc-shaped annular bottom plate 20 provided by this embodiment is the concave arc surface 21, and the curvature radius of the spherical crown arc surface 12 is consistent with the curvature radius of the concave arc surface 21, so that the tower foundation body 10 and the hollow arc-shaped annular bottom plate 20 can be arranged in a matching manner. Specifically, the radius of curvature of the spherical cap arc surface 12 is the same as the radius of curvature of the concave arc surface 21. Meanwhile, the hollow cambered surface annular bottom plate 20 is of an annular structure, namely a circular ring is formed in a top view from top to bottom; referring to fig. 1 and 4, the middle portion of the hollow cambered annular base plate 20 is a hollow structure 22.
In the embodiment of the invention, the balanced tower foundation can support the iron tower under normal conditions, and can effectively keep balance when one side collapses and topples. As shown in fig. 5, when the right side of the tower foundation in the goaf or the geological bad area collapses, the outer ring collapses first because the thickness of the outer ring of the hollow cambered surface annular bottom plate 20 is greater than that of the inner ring, and the weight of the outer ring is greater than that of the inner ring; after the outer ring collapses, the intersection point of the concave cambered surface 21 on the left side of the outer ring and the spherical crown cambered surface 12 of the tower foundation body 10 just forms a fulcrum of the hollow cambered surface annular bottom plate 20, so that the hollow cambered surface annular bottom plate 20 becomes a lever, the tower foundation body 10 enables the tower foundation to keep balance and vertically settle downwards under the combined action of lever prying force Z and soil pressure P, meanwhile, the foundation also vertically sinks under the action of foundation gravity G and ground wire tension, the tower foundation is guaranteed not to incline or slow down to incline, and damage of uneven settlement to the tower foundation is powerfully reduced.
Optionally, in order to improve the performance of the balanced tower foundation, the upper half of the tower foundation body 10 is a columnar structure. As shown in fig. 2, the dotted line in the figure divides the tower foundation body 10 into a column foundation and a spherical crown foundation which are arranged up and down; wherein, the columnar foundation is a cylindrical foundation, and the spherical crown foundation is a spherical crown foundation. Meanwhile, as shown in fig. 1 and 4, an extension structure 30 is further arranged on the outer side of the hollow arc-shaped annular base plate 20, so that the hollow arc-shaped annular base plate 20 can better support the tower foundation body 10; the width of the expanded structure is b 1. In the embodiment of the invention, the columnar foundation and the spherical crown foundation can be designed in an integrated manner; likewise, the hollow cambered annular base plate 20 and the expanding structure 30 can also be of a one-piece design.
The embodiment of the invention provides a balanced type tower foundation, which comprises a tower foundation body 10 and a hollow cambered annular bottom plate 20 which are arranged up and down, wherein the contact surfaces of the tower foundation body 10 and the hollow cambered annular bottom plate are spherical crown surfaces; when one side of the tower foundation collapses, the outer ring collapses firstly because the weight of the outer ring of the hollow cambered surface annular bottom plate 20 is greater than that of the inner ring, and the intersection point of the concave cambered surface 21 on the side which does not collapse or collapses later and the spherical crown cambered surface 12 of the tower foundation body 10 just forms the fulcrum of the hollow cambered surface annular bottom plate 20, so that the hollow cambered surface annular bottom plate 20 becomes a lever, the tower foundation body 10 enables the tower foundation to keep balance and vertically settle downwards under the combined action of lever prying force and soil pressure, the tower foundation is ensured not to incline or slow down, the damage of uneven settlement to the tower foundation is effectively reduced, the foundation is ensured to be stable and unchanged, the capability of the power transmission line foundation for resisting foundation collapse deformation is improved, and the foundation is ensured not to deform and incline.
The embodiment of the invention also provides a design method of the balanced type tower foundation, which is used for designing and manufacturing the design scheme of the balanced type tower foundation shown in the figure 1. Referring to fig. 6, the method includes:
step 101: and determining basic parameters of the tower foundation, wherein the basic parameters comprise tower foundation opening.
In the embodiment of the invention, the basic parameters of the balanced tower foundation can be determined by the tower to be installed, for example, the general tower has a corresponding relation between the call height and the basic heel, for example, when the call height is 15m, the basic heel can be 3380 mm; when the breath height is 21m, the basic heel is 4220mm, and the like. Meanwhile, geological information and mining information of the goaf position can be collected, so that a tower suitable for the current goaf is selected, and corresponding basic parameters can be determined. In addition, the basic parameters may also include anchor bolt setbacks.
Step 102: and determining the size parameters of the tower foundation body according to the foundation parameters, wherein the size parameters of the tower foundation body comprise the curvature radius of the spherical crown cambered surface of the bottom surface, the bottom surface radius of the spherical crown cambered surface and the thickness of the tower foundation body.
In the embodiment of the invention, the size parameters of the tower foundation body 10 need to be adapted to the foundation parameters of the tower foundation, that is, the size parameters of the tower foundation body 10 need to be determined according to the foundation parameters. As shown in fig. 2, the tower foundation is set to be X, and the foundation bolts are set to be X1; referring to fig. 2 and 3, the dimension parameters of the tower foundation body 10 include the curvature radius R of the spherical crown cambered surface 12 of the bottom surface1Radius r of bottom surface of spherical crown cambered surface and thickness H of tower foundation body 101. In addition, the size parameters of the tower foundation body 10May also include the height h of the pile foundation3。
Step 103: the size parameters of the hollow cambered surface annular bottom plate are determined according to the size parameters of the tower foundation body, the size parameters of the hollow cambered surface annular bottom plate comprise the curvature radius of the concave cambered surface on the upper surface, and the curvature radius of the concave cambered surface is consistent with the curvature radius of the spherical crown cambered surface 12.
In the embodiment of the invention, the shape of the tower foundation body 10 is matched with that of the hollow cambered surface annular bottom plate 20, so that the size parameters of the hollow cambered surface annular bottom plate 20 can be determined according to the size parameters of the tower foundation body 10. Wherein, the curvature radius of the concave cambered surface 21 is consistent with that of the spherical crown cambered surface 12. In particular, the radius of curvature R of the concave arc surface 212Radius of curvature R with the spherical crown curved surface 121Are equal. In addition, referring to fig. 4, the dimensional parameters of the hollow cambered annular base plate 20 can further include: the diameter phi 1 of the outer ring of the hollow cambered surface annular bottom plate, the diameter phi 2 of the inner ring of the hollow cambered surface annular bottom plate and the thickness H of the outer ring2And inner ring thickness H3And the like.
Specifically, the step 103 "determining the size parameter of the hollow arc-shaped annular bottom plate according to the size parameter of the tower foundation body" includes:
step A1: according to the curvature radius R of the spherical crown cambered surface 121Determining the radius of curvature R of the concave arc surface 212And R is1＝R2。
Step A2: the diameter phi 1 of the outer ring of the hollow cambered surface annular bottom plate 20 is determined according to the bottom surface radius r of the spherical crown cambered surface, and phi 1 is more than or equal to 2 r.
Step A3: according to the curvature radius R of the concave cambered surface 212And determining the diameter phi 2 of the inner ring, the thickness of the outer ring and the thickness of the inner ring of the hollow arc surface annular bottom plate 20 according to the outer ring diameter phi 1 of the hollow arc surface annular bottom plate 20 and a preset proportional relation.
In the embodiment of the present invention, as described above, the curvature radius R of the spherical cap arc surface 121Radius of curvature R with the concave arc surface 212The same; and the diameter phi 1 of the outer ring of the hollow cambered surface annular bottom plate 20 is not less than the diameter (namely 2r) of the bottom surface of the spherical crown cambered surface, so that the hollow cambered surface annular bottom plate 20 can be goodThe tower foundation body 10 is well supported. Meanwhile, the proportional relation among partial parameters is preset, and the undetermined parameters can be determined according to the known parameters and the proportional relation, namely the diameter phi 2 of the inner ring, the thickness of the outer ring and the thickness of the inner ring of the hollow cambered surface annular bottom plate 20 can be determined. For example, if Φ 1: Φ 2 is set to 2:1 in advance, the inner ring diameter Φ 2 can be determined according to the outer ring diameter Φ 1 of the hollow arc annular bottom plate 20.
Step 104: and generating a design scheme according to the size parameters of the tower foundation body and the size parameters of the hollow cambered surface annular bottom plate.
In the embodiment of the invention, after the dimensional parameters of the tower foundation body 10 and the dimensional parameters of the hollow cambered surface annular bottom plate 20 are determined, a design scheme for producing the balanced tower foundation can be generated, construction drawings and the like can be published, and the subsequent operation is facilitated.
According to the design method of the balanced type tower foundation provided by the embodiment of the invention, the size parameter of the tower foundation body 10 and the size parameter of the hollow cambered surface annular bottom plate 20 are gradually determined according to the foundation parameters of the tower foundation, so that a corresponding design scheme is generated, the balanced type tower foundation can adapt to the matched tower, the tower foundation can be ensured not to incline or be slowly inclined, the damage of uneven settlement to the tower foundation is effectively reduced, the foundation root opening stability is ensured not to change, the capability of the power transmission line foundation for resisting foundation collapse deformation is improved, and the foundation is ensured not to deform and incline.
On the basis of the above embodiment, the step 102 "determining the size parameter of the tower foundation body according to the foundation parameter" includes:
step B1: and determining the bottom surface radius r of the spherical crown cambered surface according to the basic parameters.
In the embodiment of the present invention, since the foundation heel X in the foundation parameters represents the distance between two adjacent pile foundations, the diameter of the bottom surface of the spherical crown arc surface 12 needs to be not less than
I.e. radius of the bottom surface
Step B2: determining the thickness H of the tower foundation body according to the preset uplifting force F1And the gravity G of the tower foundation body is greater than the pull-up force F.
In the embodiment of the invention, the balanced tower foundation needs to resist the uplifting force F, so that the gravity G of the tower foundation body 10 needs to be greater than the uplifting force F. In this embodiment, the thickness H of the tower foundation body 101It needs to be large enough to ensure that the gravity G of the tower foundation body 10 is greater than the uplift force F.
Step B3: according to the radius r of the bottom surface of the spherical crown cambered surface and the thickness H of the tower foundation body1Determining the curvature radius R of the cambered surface of the spherical cap1。
In the embodiment of the invention, the bottom surface radius r of the spherical crown cambered surface 12 and the thickness H of the tower foundation body 10 are determined1Then, the curvature radius R of the spherical crown cambered surface 12 can be determined according to the geometric relationship1. Specifically, as shown in fig. 2, the tower foundation body 10 includes a columnar foundation and a spherical crown foundation, so the thickness H is equal to1Thickness h comprising a columnar basis1And thickness h of the spherical crown base2(ii) a Wherein, the thickness h is determined according to the base of the spherical cap2The corresponding curvature radius R can be determined according to the bottom surface radius R of the spherical crown cambered surface1I.e. R1 2＝(R1-h2)2+r2Therefore, it is
Optionally, in the step B2 ″, the thickness H of the tower foundation body is determined according to the preset uplifting force F1"comprises:
step B21: determining the minimum thickness H of the tower foundation body according to the preset uplifting force FminAnd is and
wherein the content of the first and second substances,
h1the thickness of the columnar foundation is represented, and rho represents the volume weight of the tower foundation body.
Step B22: determining the thickness H of a tower foundation body1And H is1＞Hmin。
In the embodiment of the invention, as shown in fig. 2, the tower foundation body 10 can be divided into a column foundation and a spherical crown foundation which are arranged up and down, wherein the curvature radius of the spherical crown foundation is the curvature radius R of the spherical crown cambered surface 121The bottom radius of the spherical crown base is the bottom radius r of the spherical crown cambered surface 12. Since the gravity G of the tower foundation body 10 needs to be greater than the preset uplift force F, the gravity G of the columnar foundation1Gravity G of the spherical crown base2The sum being greater than the pull-up force F, i.e. G1+G2F is greater than the total weight of the steel; wherein the thickness h of the columnar foundation is preset1And the volume weight rho of the tower foundation body 10 can be determined according to the material of the tower foundation body 10, so the gravity G of the columnar foundation1Comprises the following steps:
G1＝ρ×V1＝ρπr2h1(ii) a Wherein, V1Is the volume of the columnar foundation.
Similarly, the gravity G of the spherical crown base can be known based on the volume formula of the spherical crown2Comprises the following steps:
Therefore, when the gravity G of the tower base body 10 is greater than the uplift force F, G2＞F-G1I.e. by
Namely, it is
Is provided with
Due to the fact thath2 3+3r2h2K is a monotonically increasing function and, with the radius r of the base surface known, the thickness h2The greater the gravity G2The larger the size; so that the thickness h of the spherical crown base2Is greater than the function h2 3+3r2h2When the root is k, the requirement that the gravity G is larger than the pull-up force F can be met.
For function h2 3+3r2h2-k is 0, its discriminant
So that the function has a real root and two complex roots, and the real root is
I.e. when the thickness of the spherical cap foundation
And the gravity G is greater than the pull-up force F, so that the design requirement of the balanced tower foundation is met. Namely, the solid root is the minimum thickness of the spherical crown foundation, and correspondingly, the minimum thickness H of the tower foundation body 11minIs composed of
Therefore, when the thickness H of the tower foundation body 10 is larger1＞HminThe gravity G is ensured to be larger than the pull-up force F, and the proper thickness H is selected according to actual requirements1And (4) finishing.
Optionally, the method further includes: and determining material information of the tower foundation body, wherein the material information comprises one or more of concrete strength grade, reinforcement scheme and reinforcement ratio. After the material information of the tower foundation body 10 is determined, the volume weight ρ of the tower foundation body 10 can be determined.
The above describes in detail the flow of the design method of the balanced tower foundation, which can also be implemented by a corresponding device, and the structure and function of the device are described in detail below.
The design device for the balanced tower foundation provided by the embodiment of the invention is shown in fig. 7, and comprises:
a base parameter determining module 71, configured to determine base parameters of a tower base, where the base parameters include a tower base heel-off;
the first size parameter determining module 72 is configured to determine size parameters of a tower foundation body according to the foundation parameters, where the size parameters of the tower foundation body include a curvature radius of a spherical crown arc surface of a bottom surface, a bottom surface radius of the spherical crown arc surface, and a thickness of the tower foundation body;
the second size parameter determining module 73 is configured to determine a size parameter of the hollow arc-shaped annular bottom plate according to the size parameter of the tower base body, where the size parameter of the hollow arc-shaped annular bottom plate includes a radius of curvature of an inner concave arc surface of the upper surface, and the radius of curvature of the inner concave arc surface is consistent with the radius of curvature of the spherical crown arc surface;
and the scheme generating module 74 is configured to generate a design scheme according to the size parameter of the tower foundation body and the size parameter of the hollow cambered annular bottom plate.
On the basis of the foregoing embodiment, the determining, by the first size parameter determining module 72, the size parameter of the tower foundation body according to the foundation parameter includes:
determining the bottom surface radius r of the spherical crown cambered surface according to the basic parameters;
determining the thickness H of the tower foundation body according to a preset uplifting force F1And the gravity G of the tower foundation body is greater than the pull-up force F;
according to the radius r of the bottom surface of the spherical crown cambered surface and the thickness H of the tower foundation body1Determining the curvature radius R of the spherical crown cambered surface1。
On the basis of the above embodiment, the first size parameter determining module 72 determines the thickness H of the tower foundation body according to the preset uplift force F1The method comprises the following steps:
determining the minimum thickness H of the tower foundation body according to the preset pull-up force FminAnd is and
wherein the content of the first and second substances,
h1the thickness of the columnar foundation is represented, and rho represents the volume weight of the tower foundation body;
determining the thickness H of the tower foundation body1And H is1＞Hmin。
On the basis of the above embodiment, the apparatus further includes:
and the material determining module is used for determining material information of the tower foundation body, wherein the material information comprises one or more of concrete strength grade, reinforcement scheme and reinforcement ratio.
On the basis of the foregoing embodiment, the determining, by the second size parameter determining module 73, the size parameter of the hollow cambered annular bottom plate according to the size parameter of the tower foundation body includes:
according to the curvature radius R of the cambered surface of the spherical crown1Determining the radius of curvature R of the concave camber surface2And R is1＝R2；
Determining the diameter phi 1 of the outer ring of the annular bottom plate of the hollow cambered surface according to the radius r of the bottom surface of the spherical crown cambered surface, wherein the phi 1 is more than or equal to 2 r;
according to the curvature radius R of the concave cambered surface2Determining the diameter phi 1 of the outer ring of the hollow cambered surface annular bottom plate and the preset proportional relation to determine the diameter phi 2 of the inner ring and the thickness H of the outer ring of the hollow cambered surface annular bottom plate2And inner ring thickness H3。
The embodiment of the invention also provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer storage medium contains a program for executing the design method of the balanced tower foundation, and the computer executable instructions can execute the method in any method embodiment.
The computer storage medium may be any available medium or data storage device that can be accessed by a computer, including but not limited to magnetic memory (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical memory (e.g., CD, DVD, BD, HVD, etc.), and semiconductor memory (e.g., ROM, EPROM, EEPROM, nonvolatile memory (NANDFLASH), Solid State Disk (SSD)), etc.
Fig. 8 shows a block diagram of an electronic device according to another embodiment of the present invention. The electronic device 1100 may be a host server with computing capabilities, a personal computer PC, or a portable computer or terminal that is portable, or the like. The specific embodiment of the present invention does not limit the specific implementation of the electronic device.
The electronic device 1100 includes at least one processor (processor)1110, a Communications Interface 1120, a memory 1130, and a bus 1140. The processor 1110, the communication interface 1120, and the memory 1130 communicate with each other via the bus 1140.
The communication interface 1120 is used for communicating with network elements including, for example, virtual machine management centers, shared storage, etc.
Processor 1110 is configured to execute programs. Processor 1110 may be a central processing unit CPU, or an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement embodiments of the present invention.
The memory 1130 is used for executable instructions. The memory 1130 may comprise high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory. The memory 1130 may also be a memory array. The storage 1130 may also be partitioned and the blocks may be combined into virtual volumes according to certain rules. The instructions stored in the memory 1130 may be executable by the processor 1110 to enable the processor 1110 to perform the method for designing a balanced tower foundation in any of the method embodiments described above.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the modifications or alternative embodiments within the technical scope of the present invention, and shall be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A balanced pole tower foundation, comprising: the tower foundation body is arranged above the hollow cambered surface annular bottom plate;
a plurality of pile foundations are uniformly arranged on the upper surface of the tower foundation body, and the bottom surface of the tower foundation body is a spherical crown cambered surface;
the hollow cambered surface annular bottom plate is of an annular structure, the upper surface of the hollow cambered surface annular bottom plate is an inwards concave cambered surface, and the curvature radius of the spherical crown cambered surface is consistent with that of the inwards concave cambered surface.
2. The balanced tower foundation of claim 1,
the tower foundation body comprises a columnar foundation and a spherical crown foundation which are arranged up and down;
the outer side of the hollow cambered surface annular bottom plate is also provided with an expansion structure.
3. A design method of a balanced tower foundation is characterized by comprising the following steps:
determining basic parameters of a tower foundation, wherein the basic parameters comprise tower foundation opening;
determining the size parameters of a tower foundation body according to the foundation parameters, wherein the size parameters of the tower foundation body comprise the curvature radius of a spherical crown cambered surface of the bottom surface, the bottom surface radius of the spherical crown cambered surface and the thickness of the tower foundation body;
determining the size parameter of a hollow cambered surface annular bottom plate according to the size parameter of the tower foundation body, wherein the size parameter of the hollow cambered surface annular bottom plate comprises the curvature radius of an inwards concave cambered surface on the upper surface, and the curvature radius of the inwards concave cambered surface is consistent with the curvature radius of the spherical crown cambered surface;
and generating a design scheme according to the size parameters of the tower foundation body and the size parameters of the hollow cambered surface annular bottom plate.
4. The design method according to claim 3, wherein the determining the size parameter of the tower foundation body according to the foundation parameter comprises:
determining the bottom surface radius r of the spherical crown cambered surface according to the basic parameters;
determining the thickness H of the tower foundation body according to a preset uplifting force F1And the gravity G of the tower foundation body is greater than the pull-up force F;
according to the radius r of the bottom surface of the spherical crown cambered surface and the thickness H of the tower foundation body1Determining the curvature radius R of the spherical crown cambered surface1。
5. The design method according to claim 4, wherein the thickness H of the tower foundation body is determined according to a preset uplift force F1The method comprises the following steps:
determining the minimum thickness H of the tower foundation body according to the preset pull-up force FminAnd is and
wherein the content of the first and second substances,
h1the thickness of the columnar foundation is represented, and rho represents the volume weight of the tower foundation body;
determining the thickness H of the tower foundation body1And H is1＞Hmin。
6. The design method of claim 3, further comprising:
and determining material information of the tower foundation body, wherein the material information comprises one or more of concrete strength grade, reinforcement scheme and reinforcement ratio.
7. The design method according to claim 3, wherein the determining the size parameters of the hollow cambered annular bottom plate according to the size parameters of the tower base body comprises the following steps:
according to the curvature radius R of the cambered surface of the spherical crown1Determining the radius of curvature R of the concave camber surface2And R is1＝R2；
Determining the diameter phi 1 of the outer ring of the annular bottom plate of the hollow cambered surface according to the radius r of the bottom surface of the spherical crown cambered surface, wherein the phi 1 is more than or equal to 2 r;
according to the curvature radius R of the concave cambered surface2Determining the diameter phi 1 of the outer ring of the hollow cambered surface annular bottom plate and the preset proportional relation to determine the diameter phi 2 of the inner ring and the thickness H of the outer ring of the hollow cambered surface annular bottom plate2And inner ring thickness H3。
8. The utility model provides a design device of balanced type shaft tower basis which characterized in that includes:
the base parameter determining module is used for determining base parameters of a tower base, wherein the base parameters comprise tower base follow-up;
the first size parameter determining module is used for determining size parameters of a tower foundation body according to the foundation parameters, and the size parameters of the tower foundation body comprise the curvature radius of a spherical crown cambered surface of a bottom surface, the bottom surface radius of the spherical crown cambered surface and the thickness of the tower foundation body;
the second size parameter determining module is used for determining the size parameter of the hollow cambered surface annular bottom plate according to the size parameter of the tower foundation body, wherein the size parameter of the hollow cambered surface annular bottom plate comprises the curvature radius of an inwards concave cambered surface on the upper surface, and the curvature radius of the inwards concave cambered surface is consistent with the curvature radius of the spherical crown cambered surface;
and the scheme generation module is used for generating a design scheme according to the size parameters of the tower foundation body and the size parameters of the hollow cambered surface annular bottom plate.
9. A computer storage medium having stored thereon computer-executable instructions for performing the method of designing a balanced pole tower foundation according to any one of claims 3-7.
10. An electronic device, comprising:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of designing a balanced pole and tower foundation of any of claims 3-7.
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