High-position large-size bridge tower cross beam and bridge tower

Abstract

The embodiment of the utility model provides a high-position large-size bridge tower cross beam and a bridge tower, and the high-position large-size bridge tower cross beam comprises a cross beam body which comprises a plurality of cross beam units; the connecting end assemblies are connected with the two ends of the cross beam body respectively and abut against the corresponding tower limbs of the bridge tower at the same time, so that the cross beam body and the connecting end assemblies are fixed between the opposite tower limbs; the connecting assemblies are pre-buried in the cross beam units and the connecting end assemblies and used for connecting the two adjacent cross beam units and connecting the cross beam units and the connecting end assemblies; wherein the cross beam units and the connecting end assemblies are prefabricated parts made of reinforced concrete or steel shell concrete, and the face used for being connected with the other cross beam unit is a smooth plane. According to the high-position large-size bridge tower cross beam, the construction cost and the labor requirement can be reduced, construction is convenient, and the construction safety and the construction efficiency are improved.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of bridge construction, and in particular to a high-position large-volume concrete bridge tower beam and a bridge tower. Background Art

[0002] A bridge tower refers to a tower-shaped structure that supports the main beam of a bridge. The design and construction of a bridge tower is crucial to the overall stability of the bridge. The structural shapes of bridge towers vary, such as H-type, A-type, etc. Various types of bridge towers at least include tower limbs and bridge tower crossbeams arranged between the tower limbs. The bridge tower crossbeam is a key component in the bridge tower structure, usually located at the top or middle of the bridge tower, used to connect and support various parts of the bridge tower. For example, the supporting function: the crossbeam effectively disperses and transmits the load borne by the bridge tower through its structural design, ensuring the stability and safety of the bridge tower; the stabilizing function: it can enhance the overall stability of the bridge tower and prevent deformation or collapse under external forces such as strong winds or earthquakes.

[0003] For example, an H-shaped bridge tower features multiple layers of beams, and the opposing sides of the two main tower columns (tower limbs) are vertical or nearly vertical. Traditionally, the process for casting the middle and upper beams of an H-shaped bridge tower involves first casting the middle tower column, setting up the middle beam support, and then casting the middle beam. The support is then removed, and the upper tower column is cast. The support for the upper beam is then set up, the upper beam is cast, and the support is finally removed. While this method effectively casts the middle and upper beams of the bridge tower, it is cumbersome and can only be cast on-site, which is labor-intensive and time-consuming. Utility Model Content

[0004] The embodiment of the utility model provides a high-position, large-volume bridge tower beam and bridge tower that can reduce construction costs and labor requirements, facilitate construction, and improve construction safety and efficiency.

[0005] In order to solve the above technical problems, the embodiment of the present utility model provides a high-position large-volume bridge tower beam, comprising:

[0006] A beam body, comprising a plurality of beam units;

[0007] The connecting end components are respectively connected to the two ends of the crossbeam body and simultaneously abut against the corresponding pylon limbs to fix the crossbeam body and the connecting end components between the opposite pylon limbs;

[0008] A connecting assembly, pre-buried in the beam unit and the connecting end assembly, for connecting two adjacent beam units and connecting the beam unit and the connecting end assembly;

[0009] The crossbeam units and the connection end components are all prefabricated components made of reinforced concrete or steel shell concrete, and the surface used for connecting to another crossbeam unit is a smooth plane.

[0010] In some embodiments, the beam unit is a hollow cylinder.

[0011] In some embodiments, the cross section of the beam unit is in the shape of a U-shaped triangle.

[0012] In some embodiments, the beam unit and the connection end assembly are formed by casting micro-expansive concrete, and the cast beam unit is cured until its strength reaches 90% of the maximum strength value of the material.

[0013] In some embodiments, the beam unit and the connecting end assembly each have two opposite connecting surfaces, and the connecting surfaces are verified by performing point cloud scanning on the prefabricated beam unit and the connecting end assembly, and combining the virtual pre-assembly method to verify the smoothness and structural accuracy of the beam unit and the connecting end assembly. When the smoothness and structural accuracy meet the requirements, the connection position error of the beam unit and the connecting end assembly is at least not greater than 0.5 mm.

[0014] In some embodiments, the prefabricated connection assembly includes multiple groups of steel corbels, and the side surface of each steel corbel is provided with bolt connectors. The adjacent two beam units, or the beam unit and the connection end assembly are connected by bolts or bolt connectors.

[0015] In some embodiments, multiple groups of prestressed tendons are arranged in the beam unit and the connecting end assembly. The prestressed tendons are bent and include a horizontal section and vertical sections located at both ends of the horizontal section. The horizontal section is located in the beam body and the connecting end assembly, and the two vertical sections extend into the corresponding bridge tower limbs respectively.

[0016] In some embodiments, the connecting end assembly includes a first connecting end member and a second connecting end member, and the length of each of the beam units and the first connecting end and the second connecting end is 3m-5m.

[0017] In some embodiments, both the beam body and the connection end assembly have prestressing for maintaining a stable connection state.

[0018] Another embodiment of the present invention further provides a bridge tower, comprising:

[0019] It includes a bridge tower body having a plurality of tower limbs;

[0020] As described in any one of the embodiments above, the high-position and large-volume bridge tower cross beam is installed between the two tower limbs.

[0021] In some embodiments, the tower limbs are prefabricated by pouring using micro-expansive concrete, and the cast tower limbs can be cured until their strength reaches 90% of the maximum strength of the material.

[0022] Based on the disclosure of the above embodiments, it can be known that the embodiments of the present invention have the following beneficial effects:

[0023] 1. This method allows beams to be prefabricated in a prefabricated component factory. Point cloud scanning and virtual pre-assembly technology are then used to inspect the prefabricated components, ensuring dimensional accuracy, smooth joints, and secure joint positions. This approach not only improves structural quality but also reduces the possibility of structural errors affecting on-site construction.

[0024] 2. By adopting a construction method of factory prefabrication and high-rise hoisting to position the beams, the inconvenience caused by the traditional temporary support and the cumbersome process of pumping concrete from a height to prepare the beams on site is avoided. Compared with traditional methods, this application solution significantly reduces the demand for labor, helps to speed up the construction progress and reduce construction costs.

[0025] 3. The overall structure of the beam has multiple safety protection structures, including the use of prestressing to achieve structural deformation coordination, the use of embedded steel brackets and bolts to connect adjacent structural members, and the multi-layer protection of internal steel bars. These provide extremely high safety for the entire beam and ensure the stability and durability of the structure during construction and operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of a high-position, large-volume bridge tower crossbeam in an embodiment of the present utility model.

[0027] Figure 2 This is a partial structural diagram of a high-position, large-volume bridge tower beam in an embodiment of the present utility model.

[0028] Figure 3 This is a schematic diagram of another part of the structure of the high-position and large-volume bridge tower beam in an embodiment of the present utility model.

[0029] Figure 4 This is a schematic diagram of the assembly process of a high-position, large-volume bridge tower crossbeam in an embodiment of the present utility model.

[0030] Reference numerals:

[0031] 1- beam unit; 2- first connecting end member; 3- second connecting end member; 4- steel corbel; 5- prestressed steel bar; 6- tower limb. DETAILED DESCRIPTION

[0032] Below, specific embodiments of the present invention are described in detail with reference to the accompanying drawings, but are not intended to limit the present invention.

[0033] It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the following description should not be considered as limiting, but merely as an example of an embodiment. Other modifications within the scope and spirit of the present disclosure will occur to those skilled in the art.

[0034] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the general description of the present disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure.

[0035] These and other characteristics of the invention will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0036] It should also be understood that although the present invention has been described with reference to certain specific examples, those skilled in the art will be able to surely realize many other equivalent forms of the present invention, which have the characteristics described in the claims and are therefore within the scope of protection defined thereby.

[0037] The above and other aspects, features and advantages of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0038] Specific embodiments of the present disclosure will be described hereinafter with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely examples of the present disclosure, which may be implemented in a variety of ways. Well-known and / or repetitive functions and structures are not described in detail to avoid obscuring the present disclosure with unnecessary or redundant detail. Therefore, the specific structural and functional details disclosed herein are not intended to be limiting, but rather serve merely as a basis and representative basis for the claims to teach those skilled in the art to variously employ the present disclosure with substantially any suitable detailed structure.

[0039] This description may use the phrases "in one embodiment," "in another embodiment," "in a further embodiment," or "in other embodiments," each of which may refer to one or more of the same or different embodiments according to the present disclosure.

[0040] Below, the embodiment of the present utility model is described in detail with reference to the accompanying drawings.

[0041] like Figure 1 As shown, the embodiment of the present invention provides a high-position large-volume bridge tower beam, comprising:

[0042] The beam body includes a plurality of beam units 1;

[0043] The connecting end components are respectively connected to the two ends of the beam body and simultaneously abut against the corresponding tower limbs 6 of the bridge tower to fix the beam body and the connecting end components between the opposite tower limbs 6;

[0044] A connecting component, pre-buried in the beam unit 1 and the connecting end component, used to connect two adjacent beam units 1, and to connect the beam unit 1 and the connecting end component;

[0045] The beam unit 1 and the connection end assembly are both prefabricated components made of reinforced concrete or steel shell concrete, and the surface used for connecting to another beam unit 1 is a smooth plane.

[0046] Based on the above, it can be seen that the high-rise, large-volume bridge tower crossbeams in this embodiment are manufactured by improving their structural form and adopting a segmented prefabrication method. Specifically, this embodiment allows the crossbeams to be prefabricated in a prefabricated component factory, facilitating their transportation and on-site construction. It avoids the traditional process of pouring crossbeams on-site, which involves the cumbersome steps of temporary support and high-altitude concrete pumping to prepare the crossbeams on-site. Therefore, compared to traditional methods, this embodiment solves the problems of high-rise concrete pumping and support systems in traditional bridge construction, significantly improving construction efficiency and safety, while significantly reducing labor requirements, further helping to accelerate construction progress and reduce construction costs.

[0047] Specifically, such as Figure 1 As shown, the beam unit 1 in this embodiment is a beam body segmented along the length direction of the beam to form a plurality of beam units 1. Both ends of the beam are respectively connected to connecting ends, including a first connecting end and a second connecting end. The length of the beam unit 1 and the connecting end are the same, but of course they can also be different. This embodiment is explained by taking the same length as an example. The length can be but is not limited to 3-5m.

[0048] The crossbeam unit 1 in this embodiment is a hollow cylinder with a variable length, ranging from relatively long to relatively short. The cross-section of the cylinder is in the shape of a U.S. The crossbeam unit 1 and the connecting end assembly in this embodiment are both constructed of reinforced concrete or steel-shell concrete, and both are formed of a hollow U-shaped cross-section cylinder structure.

[0049] The beam units 1 and the connecting end components all have two opposite connecting surfaces for connecting adjacent beam units 1 or connecting end components. In order to ensure that the beam units 1 and the connecting end components have high structural accuracy, small errors, and smooth connecting surfaces, and to enable the two connected structural members to be tightly attached, so as to facilitate the tower limbs 6 to press and fix multiple beam units 1 and connecting end components, in this embodiment, a virtual structural model is obtained by performing point cloud scanning on the prefabricated beam units 1 and the connecting end components, and then the virtual structural model is used in combination with the virtual pre-assembly method to perform virtual assembly, and the smoothness of the connecting surface and the structural accuracy of the beam units 1 and the connecting end components are verified based on the virtual assembly results. The assembly results include whether the connection positions between beam units 1 and beam units 1, and between beam units 1 and the corresponding connecting end components are aligned, that is, whether all connection positions are flush, the specific difference, whether there are gaps between the connections, the size of the gaps, etc. When it is determined based on the virtual assembly results that the connection effect meets the requirements, it can be determined that the smoothness of the connection surface and the structural accuracy of the beam unit 1 and the connection end component meet the requirements. In this state, the connection position error of the beam unit 1 and the connection end component is at least not greater than 0.5mm.

[0050] By using point cloud scanning and virtual pre-assembly technology to inspect prefabricated components, it is possible to ensure that the prefabricated components that pass the inspection have excellent dimensional accuracy, structural accuracy, and connection surface smoothness, and can meet high requirements. Furthermore, the connection positions between adjacent beam units 1 and connection end components are fixed, and the horizontality and flatness of the prefabricated beams formed after connection meet application requirements. The above-mentioned method adopted in this embodiment not only improves the quality of structural molding, but also reduces the possibility of construction being affected by structural errors during on-site construction, ensuring that the prefabricated beams can be successfully assembled and applied during on-site construction.

[0051] Further, such as Figure 2 The prefabricated connection assembly described in this embodiment includes multiple sets of steel brackets 4, which can be used for subsequent internal bolt connections. The side surfaces of each steel bracket 4 are provided with stud connectors, for example, all welded stud connectors. Connections between adjacent beam units 1, or between a beam unit 1 and a connection end assembly, are achieved through the mating connection of bolts or stud connectors.

[0052] Combine Figure 3 As shown, multiple sets of prestressed tendons are arranged within the beam unit 1 and the connecting end assembly to enhance the overall strength of the beam and enable alignment for stress adjustment. The prestressed tendons are curved and comprise a horizontal section and vertical sections at either end of the horizontal section. The two vertical sections are connected to the ends of the horizontal section and located on the same side of the horizontal section. The horizontal section is inserted into the precast beam consisting of the beam body and the connecting end assembly, while the two vertical sections extend into the pylon limbs 6 at either end of the precast beam.

[0053] The specific number of prestressed steel bars 5 is not fixed, and they can be set on one side of the prefabricated beam, such as on the upper side of the prefabricated beam, or on the lower side of the prefabricated beam, or on both the upper and lower sides of the prefabricated beam. The specific setting form is not fixed and can be comprehensively determined based on the actual stress conditions of the entire beam.

[0054] In actual application, the first connecting end member 2 and the second connecting end member 3 in the connecting end assembly can be configured as a structure with chamfered corners, and its longitudinal section is approximately trapezoidal. The length of each beam unit 1 and the first and second connecting ends is 3m-5m, but the specific length is not fixed and can also be configured as a longer structure, or a shorter structure, such as 2m. As mentioned above, the length of each beam unit 1 and connecting end member can be the same or different. In addition, prestressing is added to the beam body and the connecting end assembly during the assembly process to maintain a stable connection state, so that the connection between the beam and the tower limb 6 of the bridge tower is stable and the application is stable.

[0055] Based on the contents of the above embodiments, it can be seen that the prefabricated overall structure of the beam has a multiple safety guarantee structure, including the use of embedded steel brackets 4 and bolts to connect adjacent structural members, and the multi-layer protection of prestressed steel bars 5 arranged inside, which provides a strong guarantee for the overall structural stability and structural strength of the beam. At the same time, it provides extremely high safety for the on-site construction process and the subsequent use of the bridge tower, ensuring the stability and durability of the structure during construction and operation.

[0056] Another embodiment of the present invention also provides a bridge tower, comprising:

[0057] It includes a bridge tower body having a plurality of tower limbs;

[0058] As described in any one of the embodiments above, the high-position and large-volume bridge tower cross beam is installed between the two tower limbs.

[0059] The type of the bridge tower is not fixed and can be H-type, A-type, etc.

[0060] Another embodiment of the present invention also provides a method for using a bridge tower crossbeam, which mainly includes preparing and connecting a bridge tower limb and a crossbeam. Specifically, the method includes:

[0061] A prefabricated connection end assembly and a plurality of cross-beam units, wherein the connection end assembly comprises a first connection end member and a second connection end member, and the cross-beam units and the connection end assembly are both hollow;

[0062] Verify the prefabrication accuracy and connection surface smoothness of the beam units and connection end components by point cloud scanning and virtual pre-assembly methods. The connection surface is the surface where the beam units and connection end components are connected to adjacent beam units and connection end components.

[0063] A connection component is pre-embedded on the beam unit and the connection end component;

[0064] Installing integral steel hoops on two tower limbs arranged opposite to each other, and using the steel hoops to push the two tower limbs in a relatively away direction, so that the two tower limbs are relatively away from each other and the spacing is increased;

[0065] Arranging the plurality of prefabricated beam units into a straight line, and placing the first connecting end member and the second connecting end member at both ends of the plurality of beam units arranged in the straight line, respectively, to form a prefabricated beam;

[0066] Using a hoisting device to hoist the prefabricated crossbeam between the two tower limbs, removing the external force applied to the two tower limbs to reset the two tower limbs, thereby pressing and fixing the prefabricated crossbeam so that the prefabricated crossbeam is confined between the two tower limbs;

[0067] Entering the interior of the prefabricated beam to securely connect two adjacent beam units and the connecting components between the beam units and the connecting end members;

[0068] Remove the connection between the prefabricated beam and the lifting equipment;

[0069] Prestress is applied to the prefabricated beams and tower limbs.

[0070] In one embodiment, applying prestress to the prefabricated beams and tower limbs includes:

[0071] Continuously applying prestress in the initial state to the prefabricated beams and tower limbs to ensure that the compressive force inside the prefabricated beams and between the prefabricated beams and tower limbs is stable;

[0072] Prestressed steel bars are inserted into the prefabricated cross beams and tower limbs. The prestressed steel bars include a horizontal section and two vertical sections formed by extending upward or downward from both ends of the horizontal section. The horizontal section passes through the prefabricated cross beams, and the two vertical sections extend into corresponding tower limbs respectively.

[0073] In one embodiment, the tower limbs are precast using slightly expansive concrete. The cast tower limbs are cured until their strength reaches 90% of the material's maximum strength before being deployed on the construction site. In other words, the tower limbs in this embodiment are also precast components. After casting and curing, once their overall strength meets the requirements for tower bridge applications, they can be transported to the construction site for deployment.

[0074] Specifically, in actual application, after determining the required dimensions of the entire pylon beam in a prefabricated component factory, it can be segmented along the length direction, and then prefabricated beam units and connecting end members based on the segmented dimensions. Alternatively, the pylon beam can be prefabricated as a whole, and then the beam can be cut to obtain multiple beam units and connecting end members. The pylon beam, each beam unit, and connecting end member are made of reinforced concrete or steel shell concrete, are hollow columns with a U-shaped cross section. Each beam unit and connecting end member is 3m-5m long, and the connecting end member is a chamfered structure with a trapezoidal longitudinal section. The overall structure is approximately trumpet-shaped, hollow inside, and has a U-shaped cross section.

[0075] The prefabricated beam units and connecting end components are scanned using a point cloud to generate a scanned model. This scanned model is then assembled using a virtual pre-assembly method to create a virtual pylon beam. Analysis and observation of this virtual pylon beam verify the overall structural prefabrication accuracy of the beam units and connecting end components, as well as the smoothness of the connecting surfaces between the beam units and connecting end components, and determine whether the connection position error is within 0.5mm. Once verified, assembly of the connected components can proceed.

[0076] Multiple sets of steel brackets are embedded inside the beam units and connection end members, and the side surfaces of the steel brackets are all welded with stud connectors.

[0077] Both the tower limbs and the entire tower structure can be prefabricated in a precast component factory. For example, they can be cast using slightly expansive concrete. The cast limbs are then cured until they reach 90% of the material's maximum strength before being transported to the construction site for installation. Both the tower limbs and the entire tower structure can be prefabricated in sections and then assembled on site.

[0078] During on-site construction, the beam units and connecting end members can be initially positioned so that multiple beam units are arranged in a straight line. The two connecting end members are placed at both ends of the straight beam unit to form a prefabricated beam. Then, the tower limbs are assembled and positioned. If the tower limbs are integral components, the assembly step can be omitted. Figure 4As shown, the two tower limbs are pushed / pulled to the sides, causing them to deform laterally at the crossbeam assembly location, increasing the spacing between the two tower limbs. The precast crossbeam, or the individual crossbeam units and connecting end members within it, are then lifted to the corresponding height between the two tower limbs using one or more lifting devices. The lateral push / pull force of the bridge tower is then released, causing the two tower limbs to return to their initial state. The precast crossbeam is then clamped and secured, completing the initial positioning of the crossbeam and tower limbs. To achieve lateral displacement and deformation of the bridge tower, integral steel sleeves can be installed at the higher position of the two tower limbs to wrap around the limbs. Force can then be applied to the limbs by using jacks to push the sleeves between them, or by connecting the sleeves to the outer piles using cables, thereby tensioning the tower limbs and causing them to tilt and shift laterally.

[0079] After initial positioning and prestressing, the lifting equipment connecting the precast beams is not temporarily removed. Instead, the lifting equipment continues to apply force. During this time, construction workers enter the manhole inside the precast beams from the construction elevator to connect the steel brackets between the segments. The end connecting members are connected to the extended steel brackets installed on the corresponding beam units. High-strength bolts are used for the connection process. Once all the steel brackets are connected, the lifting equipment is removed.

[0080] Next, prestressing is used to adjust the stress of the beams and tower limbs to ensure that the beams are tightly connected, and to provide the beams and tower limbs with prestressing in the initial state so that they continue to have this prestressing to prevent the segments from detaching during subsequent operation and affecting the stress and stability of the bridge towers. Specifically, as shown in the figure, the prestressed steel bars are bent into the state shown in the figure and then installed in the beams and tower limbs. The prestressed steel bars can be arranged in the upper side or lower side of the beam. Either one can be arranged, or prestressed steel bars can be arranged in both. The prestressed steel bar structures of the upper and lower sides can be the same or different. For example, the prestressed steel bars can have different bending types, including different bending angles and different bending section lengths, so as to effectively ensure the integrity between the beam and the bridge tower and improve the connection strength.

[0081] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the spirit and scope of protection of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present invention.

Claims

1. A high-position, large-volume bridge tower beam, characterized in that: include: A beam body, comprising a plurality of beam units; The connecting end components are respectively connected to the two ends of the crossbeam body and simultaneously abut against the corresponding pylon limbs to fix the crossbeam body and the connecting end components between the opposite pylon limbs; A connecting assembly, pre-buried in the beam unit and the connecting end assembly, for connecting two adjacent beam units and connecting the beam unit and the connecting end assembly; The crossbeam units and the connection end components are all prefabricated components made of reinforced concrete or steel shell concrete, and the surface used for connecting to another crossbeam unit is a smooth plane.

2. The high-position and large-volume bridge tower beam according to claim 1, characterized in that: The beam unit is a hollow column.

3. The high-position and large-volume bridge tower crossbeam according to claim 1, characterized in that: The cross section of the beam unit is in the shape of a Chinese umbellate.

4. The high-position and large-volume bridge tower crossbeam according to claim 1, characterized in that: The beam unit and the connecting end assembly each have two opposite connecting surfaces. The connecting surfaces are verified by performing point cloud scanning on the prefabricated beam unit and the connecting end assembly, and combining the virtual pre-assembly method to verify the smoothness and structural accuracy of the beam unit and the connecting end assembly. When the smoothness and structural accuracy meet the requirements, the connection position error of the beam unit and the connecting end assembly is at least not greater than 0.5mm.

5. The high-position and large-volume bridge tower beam according to claim 1, characterized in that: The prefabricated connection assembly includes multiple groups of steel brackets, and the side surface of each steel bracket is provided with a bolt connector. The adjacent two beam units, or the beam unit and the connection end assembly are connected by bolts or bolt connectors.

6. The high-position and large-volume bridge tower crossbeam according to claim 1, characterized in that: A plurality of groups of prestressed tendons are arranged in the beam unit and the connecting end assembly. The prestressed tendons are bent and include a horizontal section and vertical sections at both ends of the horizontal section. The horizontal section is located in the beam body and the connecting end assembly, and the two vertical sections extend into the corresponding pylon limbs respectively.

7. The high-position and large-volume bridge tower crossbeam according to claim 1, characterized in that: The connecting end assembly includes a first connecting end member and a second connecting end member. The length of each beam unit and the first connecting end and the second connecting end is 3m-5m.

8. The high-position and large-volume bridge tower beam according to claim 1, characterized in that: The beam body and the connection end assembly both have prestressing force for maintaining a stable connection state.

9. A bridge tower, characterized in that: include: It includes a bridge tower body having a plurality of tower limbs; The high-position and large-volume bridge tower cross beam according to any one of the embodiments of claims 1-8 is installed between the two tower limbs.

10. The bridge tower according to claim 9, characterized in that: The tower limbs are prefabricated by pouring micro-expansive concrete, and the cast tower limbs can be cured until their strength reaches 90% of the maximum strength value of the material.

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