CN115455685A - Method for calculating buffeting response of long cable structure under excitation of two-dimensional turbulent wind - Google Patents
Method for calculating buffeting response of long cable structure under excitation of two-dimensional turbulent wind Download PDFInfo
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Abstract
The invention belongs to the technical field of wind resistance and disaster prevention of long cable structures, and discloses a method for calculating buffeting response of a long cable structure under excitation of two-dimensional turbulent wind. The method can accurately evaluate the random unbalanced dynamic tension of the long cable structure space caused by the two-dimensional turbulent wind, reveals the forming mechanism of dynamic tension load in a parameterized form, and has strong novelty; the power spectral density function of buffeting response of the long cable structure under the excitation of two-dimensional turbulent wind is provided, the magnitude of various responses can be evaluated quickly from a statistical angle, and the method has great significance for improving the current equivalent dead wind load design theory and the wind effect evaluation theory of the long cable structure and has strong creativity; the method is simple to implement, does not need a large amount of iterative computations, has high analysis efficiency and calculation precision, has very good application prospect in the industries of power transmission lines, large-span space structures and the like, and has wide applicability.
Description
Technical Field
The invention belongs to the technical field of wind resistance and disaster prevention of long cable structures, and particularly relates to a calculation method for buffeting response of a long cable structure under excitation of two-dimensional turbulent wind.
Background
The long cable structure is a flexible nonlinear structure capable of realizing long-distance connection, only bears tension but not bending moment, and is simple in stress analysis, so that the long cable structure is simple and reliable in design and can fully exert the performance of steel, and the long cable structure is widely applied to large-span structures such as power transmission lines, large-span stadiums and feed source cabin cable nets of large radio astronomical telescopes at present. However, the long cable structure is very sensitive to random wind load due to its extremely high flexibility, and accurate wind-resistant design is a key to ensure its safe operation. To simplify the engineering design, current design methods only consider the effect of horizontal wind loads, whereas in certain specific wind fields, such as mountain wind fields or downdraft wind fields, there is a significant vertical turbulent wind component. The method has the advantages that the random buffeting response of the long cable structure under the combined action of horizontal turbulent wind and vertical turbulent wind is accurately evaluated, and the method has very important practical significance for reducing the overall failure risk of the structure. The typical method for evaluating buffeting response of the long cable structure is a nonlinear finite element method which has certain advantages in analysis precision, but needs a complex pre-and post-processing process and is very limited in application in design practice. In view of the existing problems, the invention completes the time-frequency domain modeling of the space random dynamic tension load effect according to the continuous suspension cable theory, and particularly provides a calculation method of buffeting response of a long cable structure under the excitation of two-dimensional turbulent wind, so that the evaluation efficiency of the strong wind disaster risk of the long cable structure is greatly improved.
Disclosure of Invention
The invention aims to provide a method for calculating buffeting response of a long cable structure under the excitation of two-dimensional turbulent wind, which is used for quickly evaluating the influence of the two-dimensional turbulent wind on the long cable structure.
The technical scheme of the invention is as follows:
a method for calculating buffeting response of a long-cable structure under excitation of two-dimensional turbulent wind is characterized by comprising the following steps:
the method comprises the following steps: determining an average component of buffeting response for a longline structure
Determining the displacement of the long cable structure under the combined action of horizontal and vertical average winds by using the cable structure equation with the initial state as a reference; the horizontal displacement and the vertical displacement are respectively as follows:
in the formula, T 0 And T 1 Longitudinal tension of the long cable structure in an initial state and an average wind state respectively; q is the weight of the long cable structure per unit length; l is the horizontal span of the wire;
and
respectively the average wind pressure in the horizontal direction and the average wind pressure in the vertical direction; x' and x "are integral variables of the double integral;
further, the longitudinal tension T under the combined action of the average wind is solved by adopting the formulas (3) to (6) 1 ：
In the formula, delta 1 、δ 2 And delta 3 Are all constants related to average wind pressure; EA represents the tensile stiffness of the long-cord structure;
step two: determining a pulsating component of a buffeting response of a long rope structure
The pulsation component R (t) of the long rope structure buffeting response can be calculated according to equation (7):
in the formula, n is the number of wind load simulation points, i is the serial number of the wind load simulation points and is a positive integer from 1 to n;
and
horizontal and vertical pulsating wind power respectively;
and
the upper mark R can be h, w and v and respectively represent the horizontal and vertical influence line functions of the pulsating longitudinal tension, the pulsating horizontal displacement and the pulsating vertical displacement; x is the number of i Representing the pulsating wind action point;
x i the influence line function of the pulsating longitudinal tension h at a point is as follows:
in the formula, c 0 Is the vertical height difference of two ends of the wire in the initial state; y is a vertical coordinate of the long cable structure under the combined action of horizontal and vertical average winds;
x i the influence line function of the pulse horizontal displacement w at a point is as follows:
x i the influence line function of the pulsating vertical displacement v at a point is as follows:
step three: determining a power spectral density function of a buffeting response
Based on the wiener-xinkeng theorem, the power spectral density function of the buffeting response is obtained as follows:
in the formula, n is the number of wind load simulation points, and subscripts k and j are the serial numbers of the wind load simulation points and are positive integers from 1 to n; x is the number of k And x j All are the action points of pulsating wind;
and
the average wind speeds are horizontal and vertical respectively, and psi is an included angle between the horizontal wind speed and the vertical; s. the H,H And S V,V Horizontal and vertical pulsating wind self-spectrums are respectively obtained; s H,V And S V,H Horizontal and vertical fluctuating wind cross-spectra; s s (f) Calculating parameters for the intermediate; ρ is the air density; d is the diameter of the wire; mu.s s Is the wire form factor.
Further, in calculating the buffeting response power spectral density, frequencies may be densely sampled (in frequency increments of 5/2048 Hz) at frequencies below the 10% cutoff frequency and sparsely sampled (in frequency increments of 500/2048 Hz) at frequencies above the 10% cutoff frequency.
The invention has the beneficial effects that:
(1) The method can accurately evaluate the random unbalanced dynamic tension of the long cable structure space caused by the two-dimensional turbulent wind, discloses a forming mechanism of dynamic tension load in a parameterized form, and has strong novelty.
(2) The power spectral density theoretical function of buffeting response of the long cable structure under the excitation of two-dimensional turbulent wind is provided, the magnitude of various responses can be evaluated quickly from a statistical angle, and the method has great significance for improving the current equivalent dead wind load design theory and the long cable structure wind effect evaluation theory and has strong creativity.
(3) The method is simple to implement, does not need a large amount of iterative computation, has high analysis efficiency and computation precision, has very good application prospect in the industries of power transmission lines, large-span space structures and the like, and has wide applicability.
Drawings
FIG. 1 is a schematic diagram of the calculations provided by the embodiments of the present invention;
FIG. 2 is a longitudinal (x-direction) tension time course provided by an embodiment of the present invention;
FIG. 3 is a horizontal (z-axis direction) displacement time course at the midpoint provided by an embodiment of the present invention;
FIG. 4 is a vertical (y-axis direction) displacement time course at the midpoint provided by an embodiment of the present invention;
fig. 5 is a longitudinal (x-axis direction) tension power spectral density provided by an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more apparent and understandable, the embodiments of the present invention are described in detail and completely with reference to the accompanying drawings, and it is to be understood that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Please refer to fig. 1 to 5, which are combined with the technical solutions to further illustrate the embodiments of the present invention.
The present invention is described in embodiments with reference to a power conductor as an example. It should be noted that the application scope of the present invention is not limited to the power transmission line. The parameters of the examples are as follows: the elastic modulus is 65GPa; the design running tension is 75kN; the cross-sectional area is 666.55mm 2 (ii) a The horizontal span is 800m; the weight per unit length was 19.6N. The height of the left hanging point is 65m; the initial vertical height difference of the left hanging point and the right hanging point is 15m.
The wind field parameters were as follows: the landform of the place where the embodiment is located is 'GB 50009-2012,2012, building structure load specification, chinese building industry press, beijing'; the basic wind speed is 35m/s, and the included angle between the vertical wind and the horizontal wind is 30 degrees. Meanwhile, in this embodiment, the calculation results of the nonlinear finite element method are compared, the adopted software is the general finite element analysis software ANSYS, the unit type is LINK10, the number of divided units is 200, and the wind load is loaded on each node in a concentrated force manner. The implementation steps of the invention are as follows:
the method comprises the following steps: an average component of the buffeting response of the longline structure is determined.
As shown in fig. 1, the long cable structure is subjected to only the action of the dead weight in the initial state, is simultaneously subjected to the dead weight and the average wind in two directions in the average wind state, and is further superimposed with the action of the pulsating wind in two directions in the pulsating wind state. Wherein, the long cable structure in the initial state can be described by adopting a parabola. Assuming that the horizontal and vertical average winds along the span are constant, the horizontal wind speed calculation employs a power exponent function in "GB 50009-2012,2012. Building structure load specification, china architecture industry press, beijing", where the power exponent takes 0.15. The height of a hanging point is taken according to the reference height, and the vertical wind speed is the horizontal wind speed57.7% of. The values of the horizontal and vertical average wind pressure are respectively
And
substituting the average wind pressure value obtained by the calculation into the formula (4) to the formula (6) to obtain delta 1 、δ 2 And delta 3 Respectively 8.2 x 10^16, 2.3 x 10^9 and 1.2 x 10^9; then, delta is added 1 、δ 2 And delta 3 Substituting a deformation coordination equation shown in the formula (3), and obtaining the longitudinal tension in the average wind state by using a Kaldo formula, wherein the value of the longitudinal tension is 171.6kN; further, by substituting the new longitudinal tension into the formula (1) and the formula (2), the horizontal and vertical displacements caused by the two-dimensional average wind can be determined, and the values are 22.21m and 1.02m respectively.
Step two: determining a pulsating component of a buffeting response of the longline structure.
The pulsating component of the buffeting response of the long cable structure is divided into two parts, which are respectively caused by horizontal pulsating wind and vertical pulsating wind. The influence line functions of various responses in two directions are respectively given by the formulas (8) to (11), and the two-dimensional influence line shown by the formula (7) is adopted to obtain the pulsation component of the buffeting response method of the long-rope structure considering the two-dimensional turbulent wind. The horizontal and vertical pulsating wind forces in the formula (7) can be obtained by a quasi-steady-state theory, and the values are respectively
And
wherein,
and
respectively horizontal and vertical fluctuating wind speed, and simultaneously generating a wind spectrum and three-dimensional cross-spectrum density matrix by adopting a harmonic superposition methodThe specific calculation method of (1) is described in detail in the literature "Solari G., picchardo G.Probabelistic 3-D reliability modeling for testing buffering of structures. Probabelistic Engineering Mechanics,2001,16 (1): 73-86"
And (4) superposing the pulsation component and the average component obtained in the step one to obtain a total response time course, wherein the longitudinal tension time course, the horizontal displacement time course at the midpoint and the vertical displacement time course at the midpoint are obtained through calculation respectively according to a diagram in fig. 2, a diagram in fig. 3 and a diagram in fig. 4. As can be seen from the figure, the calculation result of the invention is quite consistent with the finite element result, and the high accuracy of the invention is fully proved.
Step three: a power spectral density function of the dither response is determined.
Based on the Veno-Cinzhou theorem, a power spectral density function S of buffeting response can be obtained R (f) As shown in formula (12) and formula (13). In the formula, f represents the frequency of generating the pulsating wind speed, and the value range is 0-5 Hz. Taking longitudinal tension as an example, the power spectral density of the longitudinal tension is shown in fig. 5, and the simulated power spectral density fluctuates around the theoretical power spectral density given by the invention, which further illustrates the accuracy of the invention in the frequency domain.
When the invention is used, attention needs to be paid to: considering that the energy of the wind spectrum is high at low frequencies, when calculating the theoretical power spectral density, frequencies may be densely sampled (frequency increments of 5/2048 Hz) at frequencies below the 10% cutoff frequency and sparsely sampled (frequency increments of 500/2048 Hz) at frequencies above the 10% cutoff frequency.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (2)
1. A method for calculating buffeting response of a long-cable structure under excitation of two-dimensional turbulent wind is characterized by comprising the following steps:
the method comprises the following steps: determining an average component of buffeting response for a longline structure
Determining the displacement of the long cable structure under the combined action of horizontal and vertical average winds by using the initial state as a reference and adopting a cable structure equation; the horizontal displacement and the vertical displacement are respectively as follows:
in the formula, T 0 And T 1 Longitudinal tension of the long cable structure in an initial state and an average wind state respectively; q is the weight of the long cable structure per unit length; l is the horizontal span of the wire;
and
respectively the average wind pressure in the horizontal direction and the average wind pressure in the vertical direction; x' and x "are integral variables of the double integral;
further, the longitudinal tension T under the combined action of the average winds is solved by adopting the formulas (3) to (6) 1 ：
In the formula, delta 1 、δ 2 And delta 3 All are constants related to average wind pressure; EA represents the tensile stiffness of the long-cord structure;
step two: determining a pulsating component of a buffeting response of a longline structure
The pulsation component R (t) of the long-cable structure buffeting response is calculated according to equation (7):
in the formula, n is the number of wind load simulation points, i is the serial number of the wind load simulation points and is a positive integer from 1 to n;
and
horizontal and vertical pulsating wind power respectively;
and
respectively representing the horizontal and vertical influence line functions of the pulsating longitudinal tension, the pulsating horizontal displacement and the pulsating vertical displacement; x is the number of i Representing the pulsating wind action point;
x i the influence line function of the pulsating longitudinal tension h at a point is as follows:
in the formula, c 0 Is the vertical height difference at the two ends of the wire in the initial state; y is a vertical coordinate of the long cable structure under the combined action of horizontal and vertical average winds;
x i the influence line function of the pulse horizontal displacement w at a point is as follows:
x i the influence line function of the pulsating vertical displacement v at a point is as follows:
step three: determining a power spectral density function of a buffeting response
Based on the Veno-Cinchontheorem, the power spectral density function for buffeting response is obtained as follows:
in the formula, n is the number of wind load simulation points, and subscripts k and j are the serial numbers of the wind load simulation points and are positive integers from 1 to n; x is the number of k And x j All are the action points of pulsating wind;
and
the average wind speeds are horizontal and vertical respectively, and psi is an included angle between the horizontal wind speed and the vertical; s H,H And S V,V Horizontal and vertical pulsating wind self-spectrums are respectively obtained; s H,V And S V,H Horizontal and vertical fluctuating wind cross-spectra; s s (f) Calculating parameters for the intermediate; ρ is the air density; d is the diameter of the wire; mu.s s Is the wire form factor.
2. The method for determining the buffeting response of a two-dimensional turbulent wind-induced longline structure of claim 1, wherein in calculating the buffeting response power spectral density, frequencies are densely sampled at frequencies below a 10% cutoff frequency in increments of 5/2048Hz; the frequency is sparsely sampled above a 10% cutoff frequency with frequency increments of 500/2048Hz.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1851436A (en) * | 2006-05-31 | 2006-10-25 | 汕头大学 | Big-span roof and super high-rise building structure wind vibration response detecting and computing method |
| US20090161251A1 (en) * | 2007-12-19 | 2009-06-25 | Jeffery Kerner | Integrated windage blocker for reduction of flex cable vibration in a disk drive |
| CN104899377A (en) * | 2015-06-08 | 2015-09-09 | 大连理工大学 | Suspension bridge cable force optimization method |
| CN110309579A (en) * | 2019-06-27 | 2019-10-08 | 复旦大学 | A kind of simulating analysis and system for Elastic Aircraft gust response |
| CN110807220A (en) * | 2019-10-28 | 2020-02-18 | 河海大学 | Method for calculating instantaneous cable force of bridge inhaul cable with anti-noise function |
| CN110826211A (en) * | 2019-10-31 | 2020-02-21 | 国网山东省电力公司经济技术研究院 | Method for determining wind load of transmission line under action of non-uniform average wind |
| US20200226309A1 (en) * | 2017-10-16 | 2020-07-16 | Southeast University | Dynamic response analysis method based on dual-mode equation in random noise environment |
| CN114638044A (en) * | 2022-04-18 | 2022-06-17 | 河南工业大学 | Cable force classification layout practical method for cable-supported bridge based on double targets |
-
2022
- 2022-09-05 CN CN202211077275.6A patent/CN115455685B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1851436A (en) * | 2006-05-31 | 2006-10-25 | 汕头大学 | Big-span roof and super high-rise building structure wind vibration response detecting and computing method |
| US20090161251A1 (en) * | 2007-12-19 | 2009-06-25 | Jeffery Kerner | Integrated windage blocker for reduction of flex cable vibration in a disk drive |
| CN104899377A (en) * | 2015-06-08 | 2015-09-09 | 大连理工大学 | Suspension bridge cable force optimization method |
| US20200226309A1 (en) * | 2017-10-16 | 2020-07-16 | Southeast University | Dynamic response analysis method based on dual-mode equation in random noise environment |
| CN110309579A (en) * | 2019-06-27 | 2019-10-08 | 复旦大学 | A kind of simulating analysis and system for Elastic Aircraft gust response |
| CN110807220A (en) * | 2019-10-28 | 2020-02-18 | 河海大学 | Method for calculating instantaneous cable force of bridge inhaul cable with anti-noise function |
| CN110826211A (en) * | 2019-10-31 | 2020-02-21 | 国网山东省电力公司经济技术研究院 | Method for determining wind load of transmission line under action of non-uniform average wind |
| CN114638044A (en) * | 2022-04-18 | 2022-06-17 | 河南工业大学 | Cable force classification layout practical method for cable-supported bridge based on double targets |
Non-Patent Citations (5)
| Title |
|---|
| BYEONG-CHEOL KIM AND SUNG-SOON YHIMN: "Buffeting analysis of a cable-stayed bridge using three-dimensional computational fluid dynamics", JOURNAL OF BRIDGE ENGINEERING, vol. 19, no. 11, pages 1 - 19 * |
| LEI YAN: "Strong wind characteristics and buffeting response of a cable-stayed bridge under construction", SENSORS(BASEL), vol. 20, no. 4, pages 1 - 17 * |
| ZHENGFENG SHEN: "Nonuniform wind characteristics and buffeting response of a composite calbe-stayed bridge in a trumpet-shaped mountain pass", JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS, vol. 217, pages 1 - 20 * |
| 李宏男;任月明: "风雨激励下输电塔线体系的动力响应分析", 第十三届全国结构风工程学术会议论文集（上册）, pages 266 - 276 * |
| 董凯华: "非平稳风评价及其对结构风荷载的影响", 中国优秀硕士学位论文全文数据库 (工程科技Ⅱ辑), no. 9, pages 038 - 89 * |
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