Method for determining parameters of basket arch suspender and basket arch suspender

Abstract

The present invention relates to the technical field of bridge construction, and in particular to a method for determining parameters of a basket arch boom and a basket arch boom. The method comprises the following steps: obtaining the horizontal distance and vertical distance between the two ends of the boom at the arch rib and the main beam pin; determining the theoretical installation length of the boom based on the horizontal distance and vertical distance between the two ends of the boom at the arch rib and the main beam pin, and determining the required length for boom installation based on the basic parameters of the boom; determining the adjustable growth length of the boom based on the theoretical installation length of the boom and the required length for boom installation. This solution can solve the problem in the prior art that the boom length is inaccurate, which may cause the boom to be too short and the boom to be unable to be installed.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and in particular to a method for determining parameters of a basket arch hanger and the basket arch hanger. Background Art

[0002] The superstructure of an arch bridge is mainly composed of three parts: arch ribs, hangers, and bridge deck. The order of transferring the deadweight of the bridge structure and the load of cars traveling on the bridge is: bridge deck - hangers - arch ribs - supports - piers. The hangers play the role of transferring loads in the arch bridge, so they are an important component of the arch bridge.

[0003] The design life of a bridge is generally 100 years, but the material life of the hanger is usually shorter due to fatigue, damage, and other reasons. Sometimes, it may need to be replaced after around 20 years. The ease and quality of hanger replacement depend on the connection method between the hanger and the beam arch. Arch bridge hangers are connected to the beam arch by two methods: anchor head connection and pin connection. In recent years, pin connection has been increasingly used in hanger design because it is easier to replace hangers with pin connections than anchor head connections. Hangers with pin connections require higher precision in the cut length of the hanger, and the design drawings generally provide the adjustment range of the hanger under the reference length L.

[0004] However, this range cannot be used as the cutting length of the hanger. If the hanger length and adjustment range are inaccurate, the hanger may be too short and cannot be installed. If it is too long, the design cable tension of the completed bridge cannot be achieved. The cumulative influence of processing errors, construction errors, calculation errors, temperature, etc. during the bridge construction process brings more uncertainty to the cutting length of the hanger. Summary of the Invention

[0005] In view of the defects existing in the prior art, the purpose of the present invention is to provide a method for determining the parameters of a basket arch hanger and a basket arch hanger, which can solve the problem in the prior art that the hanger length is inaccurate, which may cause the hanger to be too short and the hanger cannot be installed.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0007] In one aspect, the present invention provides a method for determining parameters of a basket handle arch boom, characterized in that the method comprises the following steps:

[0008] Obtain the horizontal and vertical distances between the two ends of the hanger at the arch rib and the main beam pin axis;

[0009] Determine the theoretical installation length of the boom based on the horizontal and vertical distances between the two ends of the boom at the arch rib and the main beam pin axis. Combined with the basic parameters of the boom, determine the required installation length of the boom.

[0010] Determine the adjustable extension length of the boom based on the theoretical installation length of the boom and the length required for the boom installation.

[0011] In some optional solutions, the horizontal and vertical distances between the ends of the hanger at the arch rib and the main beam pin are combined with the basic parameters of the hanger to determine the required length of the hanger for installation, including:

[0012] According to the horizontal and vertical distances between the two ends of the suspender at the arch rib and the main beam pin, combined with the basic parameters of the suspender, determine the tangent value of the suspender curve at the arch rib pin and the tangent value of the suspender curve at the main beam pin during installation;

[0013] Determine the required length of the hanger installation based on the tangent value of the hanger curve at the arch rib pin and the tangent value of the hanger curve at the main beam pin.

[0014] In some optional solutions, the method of determining the tangent value of the hanger curve at the arch rib pin and the tangent value of the hanger curve at the main beam pin during installation based on the horizontal and vertical distances between the ends of the hanger at the arch rib and the main beam pin, combined with the basic parameters of the hanger, includes:

[0015] According to the formula: l=α[u G +βsinh(u G )-u L -βsinh(u L )]and Determine the tangent value sinh(u of the suspender curve at the arch rib pin axis during installation G ) and the tangent value of the boom curve at the main beam pin axis sinh(u L ); where α is the first intermediate quantity, α=T / (q*cosh(u G )), β is the second intermediate quantity, β=T / (EA*cosh(u G )), q is the weight per unit length of the boom, E is the elastic modulus of the boom, A is the cross-sectional area of ​​the boom, T is the traction force when installing the boom, u G is the first variable, u L is the second variable, l is the horizontal distance between the two ends of the hanger at the arch rib and the main beam pin, and h is the vertical distance between the two ends of the hanger at the arch rib and the main beam pin.

[0016] In some optional solutions, determining the required length of the hanger rod for installation based on the tangent value of the hanger rod curve at the arch rib pin axis and the tangent value of the hanger rod curve at the main beam pin axis includes:

[0017] According to the formula: Determine the length L required for boom installation.

[0018] In some optional solutions, obtaining the horizontal distance and vertical distance between the two ends of the hanger at the arch rib and the main beam pin axis includes:

[0019] Set reflective targets at the same position on the arch rib and main beam pins;

[0020] Set up a total station at a visible location to obtain the coordinates of two reflective targets;

[0021] According to the coordinates of the two reflective targets, the coordinates of the arch rib and the main beam pin are obtained;

[0022] According to the coordinates of the arch rib and main beam pin axis, determine the horizontal and vertical distances between the two ends of the hanger at the arch rib and main beam pin axis.

[0023] In some optional schemes, after determining the adjustable length of the hanger, it also includes: determining the adjustable length of the hanger according to the coordinates of the two ends of the hanger at the arch rib and the main beam pin axis after the bridge is completed and the elastic elongation of the hanger.

[0024] In some optional solutions, the method of determining the adjustable shortening length of the hanger according to the coordinates of the hanger ends at the arch rib and the main beam pins after the bridge is completed and the elastic elongation of the hanger includes:

[0025] An analytical model was established, and the coordinates of the two ends of the hanger at the arch rib and main beam pins after the bridge was completed were obtained through finite element calculation;

[0026] Determine the change in the distance between the two ends of the hanger at the arch rib and the main beam pin axis after the bridge is completed based on the coordinates of the two ends of the hanger at the arch rib and the main beam pin axis during installation and after the bridge is completed;

[0027] Based on the principles of material mechanics, calculate the elastic elongation of the boom;

[0028] The adjustable shortening length of the hanger is determined based on the change in the distance between the two ends of the hanger at the arch rib and the main beam pin axis after the bridge is completed and the elastic elongation of the hanger.

[0029] In some optional solutions, determining the change in the distance between the two ends of the hanger at the arch rib and the main beam pin axis after the bridge is completed based on the coordinates of the two ends of the hanger at the arch rib and the main beam pin axis during installation and after the bridge is completed includes:

[0030] According to the formula

[0031] Determine the change l1 in the distance between the two ends of the hanger at the arch rib and the main beam pin after the bridge is completed; among them, X1, Y1, and Z1 are the coordinates of the arch rib pin corresponding to the hanger when the hanger is installed, X0, Y0, and Z0 are the coordinates of the main beam pin corresponding to the hanger when the hanger is installed, X′1, Y′1, and Z′1 are the same as the coordinate points X1, Y1, and Z1, X′0, Y′0, and Z′0 are the coordinates of the main beam pin corresponding to the bridge state, and X′1, Y′1, and Z′1 are the coordinates of the arch rib pin corresponding to the bridge state.

[0032] In some optional solutions, the diameter of the reflective target is used as a set value, and the adjustable shortening length and the adjustable extending length are both increased by twice the set value.

[0033] On the other hand, the present invention also provides a basket arch boom, which is characterized in that it includes: an arch rib connector, a main rod, a connecting sleeve, a screw, an adjusting sleeve and a main beam connector, which are connected in sequence and have a total length equal to the theoretical length of the boom installation. The total length between the screw and the adjusting sleeve is adjustable, and the adjustable length of the boom is determined according to the above-mentioned basket arch boom parameter determination method.

[0034] Compared with existing technologies, the advantages of the present invention are: by obtaining the horizontal and vertical distances between the two ends of the boom at the arch rib and the main beam pin; determining the theoretical boom installation length based on the horizontal and vertical distances between the two ends of the boom at the arch rib and the main beam pin, and combining the basic boom parameters to determine the required boom installation length; and determining the adjustable boom extension length based on the theoretical boom installation length and the required boom installation length. This can avoid material loss and construction delays. The boom cutting length and method determined by a scientific and reasonable calculation method ensures construction quality and prevents construction delays due to incorrect boom length. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0036] Figure 1 Schematic diagram of a flow chart of a method for determining parameters of a basket handle arch boom according to an embodiment of the present invention;

[0037] Figure 2 Schematic diagram of the length change of the boom during installation in an embodiment of the present invention;

[0038] Figure 3 Schematic diagram of the structure of the boom in an embodiment of the present invention.

[0039] In the figure: 1. Arch rib connector; 2. Main rod; 3. Connecting sleeve; 4. Screw; 5. Adjusting sleeve; 6. Main beam connector; 7. Arch rib; 8. Main beam; 9. Reflective target. DETAILED DESCRIPTION

[0040] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0041] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0042] like Figure 1 As shown, the present invention provides a method for determining parameters of a basket arch boom, comprising the following steps:

[0043] S1: Obtain the horizontal and vertical distances between the two ends of the hanger at the arch rib and the main beam pin.

[0044] In some optional embodiments, step S1 specifically includes:

[0045] S11: Set reflective targets at the same position on the arch rib and main beam pins.

[0046] S12: Set up a total station at a visible location to obtain the coordinates of the two reflective targets.

[0047] S13: According to the coordinates of the two reflective targets, the coordinates of the arch rib and the main beam pin are obtained.

[0048] S14: According to the coordinates of the arch rib and the main beam pin axis, determine the horizontal and vertical distances between the two ends of the hanger at the arch rib and the main beam pin axis.

[0049] like Figure 2 As shown, in this example, a reflective target 9 with a diameter of 30 mm is used and attached directly above the pins on the arch rib 7 and the main beam 8, respectively. A 0.5' total station is placed in a visible position on the bridge to measure the three-dimensional coordinates of the reflective target. The horizontal and vertical distances between the two ends of the hanger at the pins of the arch rib and the main beam can be calculated.

[0050] S2: Determine the theoretical installation length of the hanger based on the horizontal and vertical distances between the two ends of the hanger at the arch rib and the main beam pin axis. Combined with the basic parameters of the hanger, determine the required length of the hanger for installation.

[0051] In this example, the theoretical installation length of the boom can be calculated based on the horizontal and vertical distances between the boom's ends at the arch rib and the main beam's pin. However, during installation, the boom is very long and the force on it is small, so it is in a relaxed state, that is, in a curved state. The nonlinear deformation of the boom must be considered to ensure the accuracy of the results. By determining the required installation length, the boom can be installed at the required length.

[0052] According to the horizontal and vertical distances between the two ends of the hanger at the arch rib and the main beam pin, and based on the positional geometric relationship between the arch rib and the main beam pin, the distance between the two ends of the hanger at the arch rib and the main beam pin can be calculated, that is, the theoretical installation length L0 of the hanger.

[0053] In some optional embodiments, determining the required length of the hanger rod for installation based on the horizontal distance and vertical distance between the ends of the hanger rod at the arch rib and the main beam pin axis in combination with basic parameters of the hanger rod includes:

[0054] S21: Based on the horizontal and vertical distances between the two ends of the hanger at the arch rib and the main beam pin, combined with the basic parameters of the hanger, determine the tangent value of the hanger curve at the arch rib pin and the tangent value of the hanger curve at the main beam pin during installation.

[0055] In this example, according to the formula l=α[u G +βsinh(u G )-u L -βsinh(u L )]and Determine the tangent value sinh(u of the suspender curve at the arch rib pin axis during installation G ) and the tangent value of the boom curve at the main beam pin axis sinh(u L ); where α is the first intermediate quantity, α=T / (q*cosh(u G )), β is the second intermediate quantity, β=T / (EA*cosh(u G )), q is the weight per unit length of the boom, E is the elastic modulus of the boom, A is the cross-sectional area of ​​the boom, T is the traction force when installing the boom, u G is the first variable, u L is the second variable, l is the horizontal distance between the two ends of the hanger at the arch rib and the main beam pin, and h is the vertical distance between the two ends of the hanger at the arch rib and the main beam pin.

[0056] In solving l=α[u G +βsinh(u G )-u L -βsinh(u L )] and h= When the suspender is connected to the arch rib and the main beam, the boundary condition l=α[u G +βsinh(u G )-u L -βsinh(u L )]and Write code in EXCLE to solve the transcendental equations, set the initial values ​​of the iteration to small amounts of 0.01 and 100, and the convergence error is 0.000001, which can quickly solve u G with u L value.

[0057] S22: Determine the required length of the hanger installation based on the tangent value of the hanger curve at the arch rib pin axis and the tangent value of the hanger curve at the main beam pin axis.

[0058] In this case, according to the formula Determine the length L required for boom installation. Where T is the traction force when installing the boom, sinh(u G ) and sinh(u L ) are the tangent values ​​of the suspender curve at the arch rib pin and the main beam pin during installation, q is the weight per unit length of the suspender, u G is the first variable, u L is the second variable. In this example, T = 50 kN can be used for calculation.

[0059] S3: Determine the adjustable extension length of the boom based on the theoretical installation length of the boom and the required length of the boom.

[0060] In this embodiment, the adjustable extension length of the boom is a=L0-L, wherein L0 is the theoretical length of the boom for installation, and L is the length required for the boom for installation.

[0061] In addition, after determining the adjustable length of the hanger, the method further includes S4: determining the adjustable length of the hanger according to the coordinates of the two ends of the hanger at the arch rib and the main beam pin axis after the bridge is completed and the elastic elongation of the hanger.

[0062] In some optional embodiments, step S4 includes:

[0063] S41: Establish an existing analysis model and obtain the coordinates of the two ends of the hanger at the arch rib and main beam pin axis after the bridge is completed through finite element calculation.

[0064] S42: Determine the change in the distance between the two ends of the hanger at the arch rib and the main beam pin axis after the bridge is completed based on the coordinates of the two ends of the hanger at the arch rib and the main beam pin axis during installation and after the bridge is completed.

[0065] In this embodiment, step S42 specifically includes:

[0066] According to the formula

[0067] Determine the change l1 in the distance between the two ends of the hanger at the arch rib and the main beam pin after the bridge is completed; among them, X1, Y1, and Z1 are the coordinates of the arch rib pin corresponding to the hanger when the hanger is installed, X0, Y0, and Z0 are the coordinates of the main beam pin corresponding to the hanger when the hanger is installed, X′1, Y′1, and Z′1 are the same as the coordinate points X1, Y1, and Z1, X′0, Y′0, and Z′0 are the coordinates of the main beam pin corresponding to the bridge state, and X′1, Y′1, and Z′1 are the coordinates of the arch rib pin corresponding to the bridge state.

[0068] S43: Based on the principles of material mechanics, calculate the elastic elongation of the hanger.

[0069] In this embodiment, the elastic elongation l2 of the suspender rod is calculated according to the suspender rod force in the bridge-built state and the elastic elongation of the suspender rod can be calculated using the material mechanics method.

[0070] S44: Determine the adjustable shortening length of the hanger based on the change in the distance between the two ends of the hanger at the arch rib and the main beam pin axis after the bridge is completed and the elastic elongation of the hanger.

[0071] In this embodiment, the hanger can be adjusted to shorten the length b=l1+l2. After the bridge is completed, the change in the distance between the two ends of the hanger at the arch rib and the main beam pin axis l1, l2 is the elastic elongation of the hanger.

[0072] In some optional embodiments, the diameter of the reflective target is used as a set value, and the adjustable shortening length and the adjustable extending length are both increased by twice the set value.

[0073] In this embodiment, since a reflective target with a diameter of 30 mm is used, the measurement error limit for L is between -60 mm and 60 mm. After accounting for this error, the adjustable length a of the boom is increased by 60 mm, as is the adjustable length b of the boom. This allows the calculation of the adjustable length a and adjustable length b for all booms on the entire bridge. To standardize processing standards, the result of a + b is further divided into two or three categories. This reduces the need for processing equipment of only two or three types, significantly saving tooling costs.

[0074] like Figure 3 As shown, on the other hand, the present invention also provides a basket arch hanger, comprising: an arch rib connector 1, a main rod 2, a connecting sleeve 3, a screw 4, an adjusting sleeve 5 and a main beam connector 6, which are connected in sequence and have a total length equal to the theoretical length of the hanger installation. The total length between the screw 4 and the adjusting sleeve 5 is adjustable, and the adjustable length of the hanger is determined according to the upper basket arch hanger parameter determination method.

[0075] In this embodiment, the total adjustable length between the screw rod 4 and the adjusting sleeve 5 includes an adjustable length a for the boom to be extended and an adjustable length b for the boom to be shortened. That is, during installation, the total length between the adjusting screw rod 4 and the adjusting sleeve 5 is adjusted to increase the total length between the adjusting screw rod 4 and the adjusting sleeve 5 by a, i.e., the total length of the boom is increased by a, which is just enough to connect the two ends of the boom with the pins on the arch rib and the main beam. Then, the total length between the adjusting screw rod 4 and the adjusting sleeve 5 is reduced by a, so that the distance between the arch rib and the main beam pin is restored to the length when the boom is not installed. Then, the total length between the adjusting screw rod 4 and the adjusting sleeve 5 is reduced by b, i.e., the total length of the boom is reduced by b, i.e., the bridge state is reached, and the boom applies a force to the main beam to form the bridge.

[0076] In summary, by obtaining the horizontal and vertical distances between the ends of the boom at the arch rib and the main beam pin, determining the theoretical boom installation length based on the horizontal and vertical distances between the ends of the boom at the arch rib and the main beam pin, and combining the boom's basic parameters to determine the required boom installation length, and determining the adjustable boom length based on the theoretical and required boom installation lengths, this method can avoid material loss and construction delays. By using scientific and rational calculation methods to determine the boom cutting length and method, we can ensure construction quality and prevent delays due to incorrect boom length.

[0077] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0078] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0079] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A method for determining parameters of a basket arch boom, characterized in that: The following steps are involved: Obtain the horizontal and vertical distances between the two ends of the hanger at the arch rib and the main beam pin, including: Set reflective targets at the same position on the arch rib and main beam pins; Set up a total station at a visible location to obtain the coordinates of two reflective targets; According to the coordinates of the two reflective targets, the coordinates of the arch rib and the main beam pin are obtained; According to the coordinates of the arch rib and main beam pins, determine the horizontal and vertical distances between the two ends of the suspender at the arch rib and main beam pins; The theoretical installation length of the boom is determined based on the horizontal and vertical distances between the two ends of the boom at the arch rib and the main beam pin. Combined with the basic parameters of the boom, the required installation length of the boom is determined, including: According to the horizontal and vertical distances between the two ends of the suspender at the arch rib and the main beam pin, combined with the basic parameters of the suspender, determine the tangent value of the suspender curve at the arch rib pin and the tangent value of the suspender curve at the main beam pin during installation; According to the formula: and , determine the tangent value of the hanger curve at the arch rib pin during installation Tangent value of the boom curve at the main beam pin ;in, is the first intermediate quantity, ), is the second intermediate quantity, ), q is the weight per unit length of the boom, E is the elastic modulus of the suspender, A is the cross-sectional area of ​​the boom, T The traction force when installing the boom, is the first variable, is the second variable, l is the horizontal distance between the two ends of the hanger at the arch rib and the main beam pin axis, h is the vertical distance between the ends of the hanger at the arch rib and the main beam pin; Determine the required length of the hanger for installation based on the tangent value of the hanger curve at the arch rib pin and the tangent value of the hanger curve at the main beam pin; Determine the adjustable extension length of the boom based on the theoretical installation length of the boom and the length required for the boom installation.

2. The method for determining parameters of a basket handle arch boom according to claim 1, wherein: The method of determining the required length of the hanger for installation based on the tangent value of the hanger curve at the arch rib pin and the tangent value of the hanger curve at the main beam pin includes: According to the formula: , determine the required length of the boom installation .

3. The method for determining parameters of a basket handle arch boom according to claim 1, wherein: After determining the adjustable length of the hanger, the method further includes: determining the adjustable length of the hanger according to the coordinates of the two ends of the hanger at the arch rib and the main beam pin axis after the bridge is completed and the elastic elongation of the hanger.

4. The method for determining parameters of a basket handle arch boom according to claim 3, wherein: The method of determining the adjustable shortening length of the suspender rod according to the coordinates of the two ends of the suspender rod at the arch rib and the main beam pin axis after the bridge is completed and the elastic elongation of the suspender rod comprises: An analytical model was established, and the coordinates of the two ends of the hanger at the arch rib and main beam pins after the bridge was completed were obtained through finite element calculation; Determine the change in the distance between the two ends of the hanger at the arch rib and the main beam pin axis after the bridge is completed based on the coordinates of the two ends of the hanger at the arch rib and the main beam pin axis during installation and after the bridge is completed; Based on the principles of material mechanics, calculate the elastic elongation of the boom; The adjustable shortening length of the hanger is determined based on the change in the distance between the two ends of the hanger at the arch rib and the main beam pin axis after the bridge is completed and the elastic elongation of the hanger.

5. The method for determining parameters of a basket handle arch boom according to claim 4, wherein: The method of determining the change in the distance between the two ends of the hanger at the arch rib and the main beam pin axis after the bridge is completed based on the coordinates of the two ends of the hanger at the arch rib and the main beam pin axis during installation and after the bridge is completed includes: According to the formula = - , determine, determine the change in the distance between the two ends of the suspender at the arch rib and the main beam pin after the bridge is completed ;in, 、 、 The coordinates of the arch rib pin corresponding to the installation of the hanger are: 、 、 The coordinates of the main beam pin corresponding to the installation of the boom. 、 、 and 、 、 The coordinate points are the same. 、 、 is the coordinate of the main beam pin axis under the bridge state, 、 、 are the coordinates of the arch rib pin axis when the bridge is completed.

6. The method for determining parameters of a basket handle arch boom according to claim 5, wherein: By taking the diameter of the reflective target as a set value, the adjustable shortening length and the adjustable extending length are both increased by twice the set value.

7. A basket arch suspension rod, characterized in that: include: An arch rib connector (1), a main rod (2), a connecting sleeve (3), a screw rod (4), an adjusting sleeve (5) and a main beam connector (6) are sequentially connected and have a total length equal to the theoretical length of the boom installation. The total length between the screw rod (4) and the adjusting sleeve (5) is adjustable, and the adjustable length of the boom is determined according to the method for determining parameters of the basket arch boom according to any one of claims 1 to 6.

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