Construction support for lower cross beam of main tower of ultrahigh cable-stayed bridge

Abstract

The utility model relates to a construction support for a lower cross beam of a main tower of an ultrahigh cable-stayed bridge, which belongs to the field of building construction and comprises a support body and a supporting beam. The top of the support body is longer than the bottom of the support body. The supporting beam is arranged on the top of the support body. The supporting beams are used for supporting cross beams of a cable-stayed bridge main tower. The support body comprises a first transverse frame, a second transverse frame, a third transverse frame, a first anchoring part and a second anchoring part. The first transverse frame is located below the supporting beam. The second transverse frame is located below the first transverse frame. The third transverse frame is located below the second transverse frame. The first anchoring parts are arranged at the two ends of the first transverse frame in the length direction and used for being connected to side columns of a cable-stayed bridge main tower. The second anchoring parts are arranged at the two ends of the second transverse frame in the length direction and used for being connected to side columns of a cable-stayed bridge main tower.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of building construction technology, especially relates to a super high cable-stayed bridge main tower lower cross beam construction support. BACKGROUND

[0002] With the development of infrastructure, bridges are increasingly important as infrastructure for transportation. Among them, the cable-stayed bridge is a kind of bridge.

[0003] In the cable-stayed bridge, the cable-stayed bridge main tower, also known as the cable tower, is the main load-bearing component of the whole bridge, with features such as rich modeling, high building height, and complex spatial structure. In the construction process of the cable-stayed bridge main tower, a super high cable-stayed bridge main tower lower cross beam construction support is needed, which is a key structure to ensure the stability and safety of the cross beam. The construction support for the cable-stayed bridge main tower lower cross beam is mainly composed of steel pipe columns, longitudinal distribution beams, and transverse truss type main beams. Among them, the steel pipe column is the main load-bearing component of the support, connected to the pile cap through a pre-embedded part; the longitudinal distribution beam and the transverse truss type main beam play the role of load distribution and transmission.

[0004] In the field, structures exceeding 20 meters in height can be referred to as super high structures. When dealing with super high cable-stayed bridge main tower construction, the existing super high cable-stayed bridge main tower lower cross beam construction support cannot support the cable-stayed bridge main tower. Even if it can barely cope with the super high height of the cable-stayed bridge main tower, the material used for the super high cable-stayed bridge main tower lower cross beam construction support is excessive. INVENTION CONTENTS

[0005] To address the deficiencies in the related art, the utility model provides a super high cable-stayed bridge main tower lower cross beam construction support, which can bear a larger weight, can be applied to the construction of super high cable-stayed bridge main towers, and has a simple structure and less material use, saving material costs, to solve the technical problems of the inability to support the cable-stayed bridge main tower and excessive material use in the prior art.

[0006] The utility model provides a super high cable-stayed bridge main tower lower cross beam construction support, which comprises:

[0007] The support main body has a top length greater than its bottom length;

[0008] The support beam is arranged at the top of the support main body; the support beam is used to support the cross beam of the cable-stayed bridge main tower;

[0009] The support main body comprises:

[0010] The first cross frame is located below the support beam;

[0011] A second crossbar, located below the first crossbar;

[0012] A third crossbar, located below the second crossbar;

[0013] A first anchor, disposed at both ends of the length direction of the first crossbar, used for connecting to the side column of the main tower of the cable-stayed bridge;

[0014] A second anchor, disposed at both ends of the length direction of the second crossbar, used for connecting to the side column of the main tower of the cable-stayed bridge.

[0015] In the technical solution, the design that the length of the top of the support body is greater than the length of the bottom can provide a more stable and suitable bearing foundation for the upper support beam, which is consistent with the stress characteristics of the lower beam of the main tower of the cable-stayed bridge during construction, and is beneficial to dispersing the vertical pressure from the beam; the support beam is accurately positioned at the top of the support body, reliably supports the beam of the main tower of the cable-stayed bridge, ensures the smoothness of the beam construction process, and avoids problems such as displacement and sinking. The first crossbar, the second crossbar and the third crossbar are arranged in layers, which enhances the overall structural strength of the support body and cooperatively bears the load; the first anchor and the second anchor are respectively connected with the side column of the main tower of the cable-stayed bridge, which can share the weight through the first anchor and the second anchor to the side column, effectively limit the horizontal displacement of the support, and improve the wind resistance, earthquake resistance and resistance to construction interference of the support, thereby stably supporting the support system in all directions. The structure can bear a larger weight, can be applied to the construction of an ultra-high main tower of a cable-stayed bridge, and has a simple structure, uses less material, and saves material cost.

[0016] In some embodiments, the support body is arranged in an isosceles trapezoidal shape; the top of the support body is the longer base of the isosceles trapezoid; and the bottom of the support body is the shorter base of the isosceles trapezoid.

[0017] In the technical solution, the support body is arranged in an isosceles trapezoidal shape, which utilizes the mechanical properties of the isosceles trapezoidal structure to uniformly and efficiently conduct the load from the upper part to the foundation, thereby reducing the stress concentration phenomenon; the top is the longer base, which increases the contact area with the support beam, optimizes the force transmission path, makes the support beam bear force more uniformly, improves the bearing stability of the entire support, meets the complex working condition requirements of the cable-stayed bridge, and ensures the construction safety and structural reliability.

[0018] In some embodiments, the first anchor is inclined from top to bottom in a direction away from the first crossbar.

[0019] In the technical scheme, the first anchor is inclined from top to bottom to a direction away from the first cross frame, weight is transmitted from top to bottom to the side column of the main tower of the cable-stayed bridge, a space stable system is formed, the strength is improved, and the cable-stayed bridge main tower connection reliability of the support can be significantly improved.

[0020] In some embodiments, the second anchor is inclined from top to bottom to a direction away from the second cross frame.

[0021] In the technical scheme, the second anchor is inclined from top to bottom to a direction away from the second cross frame, weight is transmitted from top to bottom to the side column of the main tower of the cable-stayed bridge, a space stable system is formed, the strength is improved, and the cable-stayed bridge main tower connection reliability of the support can be significantly improved.

[0022] In some embodiments, the distance between the second cross frame and the third cross frame is greater than the distance between the first cross frame and the second cross frame.

[0023] In the technical scheme, the distance between the second cross frame and the third cross frame is greater than the distance between the first cross frame and the second cross frame, the internal stress distribution of the support can be flexibly adjusted, the lower structure has enough space to accommodate construction auxiliary equipment and temporary material storage, the stress of different height areas is dispersed, the stress is not excessively concentrated in a local part, the stress of the support is more reasonable, the service life of the support is prolonged, the maintenance cost is reduced, and the complex construction process is efficiently promoted. In addition, through the design, the positions of the first anchor and the second anchor are improved, the weight can be transmitted to the side column earlier, and the overall stress of the construction support is reduced.

[0024] In some embodiments, the support body further comprises at least two parallel row frame structures.

[0025] Each of the row frame structures comprises the first cross frame, the second cross frame, the third cross frame, the first anchor and the second anchor.

[0026] In the technical scheme, at least two parallel row frame structures are provided, the overall bearing capacity of the support is greatly improved, a multi-unit collaborative stress system is formed, each row frame structure shares the load, the stress intensity of a single component is reduced, when a local part of a row frame structure is damaged, the remaining row frame structures can maintain basic support functions, the system redundancy and reliability are enhanced, the construction continuity of the lower beam of the main tower of the cable-stayed bridge is ensured, and the construction safety is improved.

[0027] In some embodiments, the row frame structure further comprises:

[0028] Two outer inclined rods inclined from bottom to top to a direction away from each other;

[0029] two inner inclined rods, which are inclined to each other away from the bottom to the top;

[0030] In the same row structure, the axes of the outer inclined rods and the inner inclined rods are in the same plane.

[0031] In some embodiments, the minimum angle between each of the inner inclined rods and the horizontal line is the same.

[0032] In the technical solution, the forces borne by the inner inclined rods are ensured to be the same, so as to avoid stress concentration and breakage of the inner inclined rods bearing relatively large forces.

[0033] In some embodiments, the minimum angle between each of the outer inclined rods and the horizontal line is the same.

[0034] In the technical solution, the forces borne by the outer inclined rods are ensured to be the same, so as to avoid stress concentration and breakage of the outer inclined rods bearing relatively large forces.

[0035] In some embodiments, the row structures are connected through connecting rods.

[0036] In the technical solution, the row structures are connected through the connecting rods, the independent row structures are integrated into an organic whole, the overall stability of the support system is strengthened, the load is evenly distributed and transmitted between the row structures, the support system is improved in resisting overall torsion and overturning, when facing unbalanced external forces, the connecting rods coordinate the deformation of the row structures, the macro stability of the support system is maintained, and the safety and precision of the construction of the lower beam of the main tower of the cable-stayed bridge are ensured.

[0037] Based on the above technical solution, in the embodiments of the utility model, the design that the length of the top of the support body is greater than the length of the bottom can provide a more stable and suitable bearing foundation for the upper support beam, which is consistent with the stress characteristics during the construction of the lower beam of the main tower of the cable-stayed bridge and is beneficial to dispersing the vertical pressure from the beam; the support beam is accurately positioned at the top of the support body, reliably supports the beam of the main tower of the cable-stayed bridge, ensures the smoothness of the construction process of the beam, and avoids problems such as displacement and sinking. The first cross frame, the second cross frame and the third cross frame are arranged in layers, the overall structural strength of the support body is enhanced, and the load is borne in cooperation; the first anchor and the second anchor are connected with the side columns of the main tower of the cable-stayed bridge respectively, can share the weight to the side columns through the first anchor and the second anchor, effectively limit the horizontal displacement of the support, improve the wind resistance, the anti-seismic and the ability of resisting construction interference of the support, and stably support the support system in all directions. BRIEF DESCRIPTION OF DRAWINGS

[0038] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the application. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute improper limitations on the utility model. In the drawings:

[0039] Figure 1 It is a whole structure schematic view of one embodiment of the utility model of a super high cable-stayed bridge main tower lower cross beam construction support;

[0040] Figure 2 It is a front view of one embodiment of the utility model of a super high cable-stayed bridge main tower lower cross beam construction support;

[0041] Figure 3 It is a side view of one embodiment of the utility model of a super high cable-stayed bridge main tower lower cross beam construction support.

[0042] In the drawing,

[0043] 100, side column, 200, cross beam, 300, support beam, 400, Bailey frame, 500, support main body, 501, first cross frame, 502, second cross frame, 503, third cross frame, 504, first anchor, 505, second anchor, 506, outer inclined rod, 507, inner inclined rod, 508, connecting rod, 509, inclined support rod. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0045] In the description of the utility model, it is understood that the terms "center", "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0046] The terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include one or more of the features.

[0047] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be direct connection, also can indirectly connect through intermediate medium, can be two elements inside the communication. For ordinary skilled in the art, the above terms can be understood in the utility model with the concrete meaning of specific circumstances.

[0048] Please refer to all drawings, in one illustrative embodiment of the utility model cable-stayed bridge main tower lower crossbeam 200 construction support, the cable-stayed bridge main tower lower crossbeam 200 construction support includes: support main body 500, the length of the top of support main body 500 is greater than the length of its bottom.

[0049] In some embodiments, the cable-stayed bridge main tower lower crossbeam 200 construction support includes support beam 300, support beam 300 is arranged at the top of support main body 500, and support beam 300 is used to support the crossbeam 200 of the cable-stayed bridge main tower.

[0050] In some embodiments, support main body 500 includes first cross frame 501, and first cross frame 501 is located below support beam 300.

[0051] In some embodiments, support main body 500 includes second cross frame 502, and second cross frame 502 is located below first cross frame 501.

[0052] In some embodiments, support main body 500 includes third cross frame 503, and third cross frame 503 is located below second cross frame 502.

[0053] In some embodiments, support main body 500 includes first anchor 504, and first anchor 504 is arranged at both ends of the length direction of first cross frame 501, and first anchor 504 is used to be connected to the side column 100 of the cable-stayed bridge main tower.

[0054] In some embodiments, support main body 500 includes second anchor 505, and second anchor 505 is arranged at both ends of the length direction of second cross frame 502, and second anchor 505 is used to be connected to the side column 100 of the cable-stayed bridge main tower.

[0055] Through the above design, the top length of the support body 500 is greater than its bottom length, providing a more stable and suitable load-bearing foundation for the upper support beam 300. This aligns with the stress characteristics of the lower crossbeam 200 of the cable-stayed bridge main tower during construction, and helps to disperse the vertical pressure from the crossbeam 200. The support beam 300 is precisely positioned at the top of the support body 500, reliably supporting the crossbeam 200 of the cable-stayed bridge main tower, ensuring the smooth construction of the crossbeam 200, and avoiding problems such as displacement and subsidence. The first crossbeam 501, the second crossbeam 502, and the third crossbeam 503 are arranged in layers to enhance the overall structural strength of the support body 500 and to jointly bear the load. The first anchor 504 and the second anchor 505 are respectively connected to the side column 100 of the cable-stayed bridge main tower, which can distribute the weight to the side column 100 through the first anchor 504 and the second anchor 505, and effectively limit the horizontal displacement of the support, improving the support's resistance to wind, earthquakes, and construction interference, and comprehensively stabilizing the support system. This structure can withstand greater weight and can be used in the construction of super-tall cable-stayed bridge main towers. In addition, the structure is simple, uses less material, and saves material costs.

[0056] In some embodiments, the support body 500 is arranged in an isosceles trapezoidal shape; the top of the support body 500 is the longer base of the isosceles trapezoid; the bottom of the support body 500 is the shorter base of the isosceles trapezoid. By making the support body 500 an isosceles trapezoid, the mechanical properties of the isosceles trapezoidal structure can be utilized to uniformly and efficiently transmit the load from above to the foundation, reducing stress concentration. The top, as the longer base, increases the contact area with the support beam 300, optimizes the force transmission path, makes the support beam 300 more evenly stressed, improves the overall load-bearing stability of the support, meets the requirements of complex working conditions of cable-stayed bridges, and ensures construction safety and structural reliability.

[0057] In some embodiments, a Bailey frame 400 formed by splicing Bailey panels is provided on the top of the support body 500, and a support beam 300 is provided on the top of the Bailey frame 400.

[0058] In another embodiment, the support beam 300 is formed by splicing Bailey panels and is directly connected to the top of the support body 500.

[0059] In some embodiments, the structure of the main tower of a cable-stayed bridge includes a crossbeam 200 and two side columns 100, with the two side columns 100 positioned on the ground. The two ends of the crossbeam 200 are connected to the tops of the two side columns 100, respectively. During construction, a construction scaffold is located between the two side columns 100, primarily used to support the crossbeam 200. This structural form of the present application can support main towers of cable-stayed bridges up to fifty meters high, or even higher.

[0060] In some embodiments, the first anchor 504 is inclined from top to bottom in a direction away from the first cross frame 501. The inclination of the first anchor 504 from top to bottom in the direction away from the first cross frame 501 transmits the weight from top to bottom to the side column 100 of the main tower of the cable-stayed bridge, forms a spatial stable system, improves the strength, and can resist external force impact from different directions, such as strong wind, water flow impact, or construction vibration, thereby significantly improving the connection reliability of the support and the main tower of the cable-stayed bridge.

[0061] Further, the minimum angle between each first anchor 504 and the horizontal line is the same. In this way, the transmission direction of each first anchor 504 can be uniformly transmitted to the side columns 100 on both sides.

[0062] In some embodiments, the second anchor 505 is inclined from top to bottom in a direction away from the second cross frame 502. The inclination of the second anchor 505 from top to bottom in the direction away from the second cross frame 502 transmits the weight from top to bottom to the side column 100 of the main tower of the cable-stayed bridge, forms a spatial stable system, improves the strength, and can resist external force impact from different directions, such as strong wind, water flow impact, or construction vibration, thereby significantly improving the connection reliability of the support and the main tower of the cable-stayed bridge.

[0063] Further, the minimum angle between each second anchor 505 and the horizontal line is the same. In this way, the transmission direction of each second anchor 505 can be uniformly transmitted to the side columns 100 on both sides.

[0064] In some embodiments, each first anchor 504 and second anchor 505 connected to the same side column 100 are parallel to each other. In other words, the minimum angle between the first anchor 504 and the horizontal line is the same as the minimum angle between the second anchor 505 and the horizontal line.

[0065] In some embodiments, the first cross frame 501, the second cross frame 502, and the third cross frame 503 are arranged horizontally, and the length direction of the first cross frame 501, the second cross frame 502, and the third cross frame 503 is the same as the length direction of the cross beam 200.

[0066] In some embodiments, the distance between the second crossbar 502 and the third crossbar 503 is greater than the distance between the first crossbar 501 and the second crossbar 502. Increasing the distance between the second crossbar 502 and the third crossbar 503, compared to the distance between the first crossbar 501 and the second crossbar 502, can flexibly adjust the internal stress distribution of the support, provide sufficient space for the lower structure to accommodate construction auxiliary equipment and temporarily store materials, disperse the stress in different height areas, avoid excessive stress concentration in a certain local area, make the stress of the support more reasonable, prolong the service life of the support, reduce maintenance costs, and facilitate efficient promotion of complex construction processes. In addition, through this design, the positions of the first anchor 504 and the second anchor 505 are improved, so that the weight can be transmitted to the side column 100 earlier, thereby reducing the overall stress of the construction support.

[0067] In some embodiments, the support body 500 further comprises at least two parallel row structures; each row structure comprises a first crossbar 501, a second crossbar, a third crossbar 503, a first anchor 504, and a second anchor 505. The provision of at least two parallel row structures greatly improves the overall bearing capacity of the support, forms a multi-unit collaborative stress system, each row structure shares the load, reduces the stress intensity of individual components, and when a certain row structure is locally damaged, the remaining row structures can maintain basic support functions, enhance system redundancy and reliability, ensure the construction continuity of the lower beam 200 of the cable-stayed bridge main tower, and improve construction safety.

[0068] In some embodiments, the row structure further comprises two outer inclined rods 506 and two inner inclined rods 507, the outer inclined rods 506 are inclined away from each other from bottom to top. The inner inclined rods 507 are inclined away from each other from bottom to top; in the same row structure, the axes of each outer inclined rod 506 and inner inclined rod 507 are in the same plane. The outer inclined rods 506 are inclined away from each other from bottom to top, and the inner inclined rods 507 are also arranged in the same way, and the inner and outer inclined rods 506 form a stable triangular support structure, greatly enhancing the in-plane stiffness of the row structure and resisting horizontal shear force and tension; in the same row structure, the axes of the inclined rods are in the same plane, ensuring the continuity and efficiency of force transmission, decomposing and conducting external forces to the foundation, effectively preventing local instability and deformation of the support, maintaining the shape stability of the row structure, and meeting the construction mechanics requirements.

[0069] In some embodiments, the minimum included angle between each inner inclined rod 507 and the horizontal line is the same. This ensures that the forces borne by the inner inclined rods 507 are the same, thereby avoiding stress concentration and causing the inner inclined rods 507 with greater stress to break.

[0070] In some embodiments, the minimum included angle between each outer inclined rod 506 and the horizontal line is the same. This ensures that the forces borne by the outer inclined rods 506 are the same, thereby avoiding stress concentration and causing the outer inclined rods 506 with greater stress to break.

[0071] In some embodiments, the minimum angle between the inner inclined rod 507 and the horizontal line is greater than the minimum angle between the outer inclined rod 506 and the horizontal line, so as to make the structure more reasonable and stable. The weight of the beam 200 can be more effectively shared.

[0072] In some embodiments, the connection rods 508 are connected between the row structures. The connection rods 508 are connected between the row structures, integrate the multiple independent row structures into an organic whole, strengthen the overall stability of the support system, realize uniform distribution and transmission of the load between the row structures, improve the resistance of the support to overall torsion and overturning, and when facing unbalanced external force, the connection rods 508 coordinate the deformation of the row structures, maintain the macro stability of the support, and ensure the safety and precision of the beam 200 construction of the main tower of the cable-stayed bridge.

[0073] In some embodiments, the end of the connection rod 508 can be connected with the first cross frame 501, the second cross frame 502, the third cross frame 503, the outer inclined rod 506, or the inner inclined rod 507.

[0074] In some embodiments, the end of the connection rod 508 can be connected with the connection between the first cross frame 501 and the outer inclined rod 506. The end of the connection rod 508 can be connected with the connection between the first cross frame 501 and the inner inclined rod 507. The end of the connection rod 508 can be connected with the connection between the second cross frame 502 and the outer inclined rod 506. The end of the connection rod 508 can be connected with the connection between the second cross frame 502 and the inner inclined rod 507. The end of the connection rod 508 can be connected with the connection between the third cross frame 503 and the outer inclined rod 506. The end of the connection rod 508 can be connected with the connection between the third cross frame 503 and the inner inclined rod 507.

[0075] In some embodiments, the support body 500 further comprises an inclined support rod 509, one end of the inclined support rod 509 being connected with the second cross frame 502 and the other end being connected with the first cross frame 501.

[0076] In some embodiments, the inclined support rod is connected at one end with the second cross frame 502 and at the other end with the third cross frame 503.

[0077] In some embodiments, the inclined support rod is connected at one end with the connection between the second cross frame 502 and the outer inclined rod 506 and at the other end with the connection between the first cross frame 501 and the inner inclined rod 507.

[0078] In some embodiments, the height of the main tower of the cable-stayed bridge is taken as an example of fifty meters. The distance between the first cross frame 501 and the second cross frame 502 is six meters. The distance between the second cross frame 502 and the third cross frame 503 is ten meters.

[0079] Through the description of the plurality of embodiments of the cable-stayed bridge main tower lower cross beam 200 construction support of the utility model, it can be seen that the cable-stayed bridge main tower lower cross beam 200 construction support embodiment of the utility model has at least one or more of the following advantages:

[0080] 1、The design that the length of the top of the support main body 500 is greater than the length of the bottom can provide a more stable and suitable bearing base for the upper support beam 300, which is consistent with the stress characteristics of the cable-stayed bridge main tower lower cross beam 200 during construction, and is beneficial to dispersing the vertical pressure from the cross beam 200; the support beam 300 is accurately positioned on the top of the support main body 500, reliably supports the cross beam 200 of the cable-stayed bridge main tower, ensures the smoothness of the cross beam 200 construction process, and avoids displacement, sinking and other problems. The first cross frame 501, the second cross frame 502 and the third cross frame 503 are arranged in layers, which enhances the overall structural strength of the support main body 500 and cooperatively bears the load; the first anchor 504 and the second anchor 505 are respectively connected with the cable-stayed bridge main tower side column 100, which can share the weight to the side column 100 through the first anchor 504 and the second anchor 505, effectively limit the horizontal displacement of the support, improve the wind resistance, shock resistance and resistance to construction interference capacity of the support, and provide a comprehensive stable support system. The structure can bear a larger weight, can be applied to the construction of an ultra-high cable-stayed bridge main tower, and the structure is simple, uses less material and saves material cost;

[0081] 2、The first anchor 504 is inclined from top to bottom in a direction away from the first cross frame 501. The first anchor 504 is inclined from top to bottom in a direction away from the first cross frame 501, which transmits the weight from top to bottom to the side column 100 of the cable-stayed bridge main tower, forms a spatial stable system, improves the strength, and can resist external force impact from different directions, such as strong wind, water flow impact or construction vibration, significantly improves the connection reliability of the support and the cable-stayed bridge main tower.

[0082] Finally, it should be explained that: the embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts of each embodiment can be referred to.

[0083] The above embodiments are only used to illustrate the technical solutions of the utility model and not to limit them; although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the specific embodiments of the utility model can be modified or some technical features can be replaced by equivalents; without departing from the spirit of the technical solutions of the utility model, they should be covered in the technical solution range of the utility model claimed.

Claims

1. A construction support for a lower beam of a main tower of an ultra-high cable-stayed bridge, characterized in that, The utility model relates to a support frame for a cable-stayed bridge, comprising: a support body, the length of the top of which is greater than that of the bottom; a support beam arranged at the top of the support body; the support beam is used for supporting the cross beam of the main tower of the cable-stayed bridge; wherein the support body comprises: a first cross frame arranged below the support beam; a second cross frame arranged below the first cross frame; a third cross frame arranged below the second cross frame; a first anchor arranged at both ends of the length direction of the first cross frame, which is used for connecting to the side column of the main tower of the cable-stayed bridge; a second anchor arranged at both ends of the length direction of the second cross frame, which is used for connecting to the side column of the main tower of the cable-stayed bridge.

2. The construction support for the lower beam of the main tower of an ultra-high cable-stayed bridge according to claim 1, characterized in that, The support body is arranged in the shape of an isosceles trapezoid, the top of the support body is the longer base of the isosceles trapezoid, and the bottom of the support body is the shorter base of the isosceles trapezoid.

3. The construction support for the lower beam of the main tower of an ultra-high cable-stayed bridge according to claim 2, characterized in that, The first anchor is inclined away from the first cross frame from top to bottom.

4. The construction support for the lower beam of the main tower of an ultra-high cable-stayed bridge according to claim 3, characterized in that, The second anchor is inclined away from the second cross frame from top to bottom.

5. The construction support for the lower beam of the main tower of an ultra-high cable-stayed bridge according to claim 1, characterized in that, The distance between the second cross frame and the third cross frame is greater than that between the first cross frame and the second cross frame.

6. The construction support for the lower beam of the main tower of an ultra-high cable-stayed bridge according to claim 1, characterized in that, The support body further comprises at least two row frames parallel to each other; each of the row frames comprises the first cross frame, the second cross frame, the third cross frame, the first anchor and the second anchor.

7. The construction support for the lower beam of the main tower of an ultra-high cable-stayed bridge according to claim 6, characterized in that, The row frame further comprises: two outer inclined rods, which are inclined away from each other from bottom to top; two inner inclined rods, which are inclined away from each other from bottom to top; in the same row frame, the axes of the outer inclined rods and the inner inclined rods are in the same plane.

8. The construction support for the lower beam of the main tower of an ultra-high cable-stayed bridge according to claim 7, characterized in that, The minimum angles between each of the inner inclined rods and the horizontal line are the same.

9. The construction support for the lower beam of the main tower of an ultra-high cable-stayed bridge according to claim 7, characterized in that, The minimum angles between each of the outer inclined rods and the horizontal line are the same.

10. The construction support for the lower beam of the main tower of an ultra-high cable-stayed bridge according to claim 7, characterized in that, The row frames are connected by connecting rods.

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