An ultra-high space twist asymmetric cable-stayed tower construction support system and construction method

Abstract

The application discloses a super-high space twist asymmetric inclined cable tower construction support system and a construction method, the inclined cable tower comprises a docking upstream side inclined cable tower and a downstream side inclined cable tower, the upstream side inclined cable tower and the downstream side inclined cable tower are respectively located on the upstream side and the downstream side of a bridge, the super-high space twist asymmetric inclined cable tower construction support system comprises a steel pipe pile support assembly, a cross brace structure and a temporary cable assembly, the steel pipe pile support assembly is used for temporarily supporting the inclined cable tower during a construction process, a plurality of steel pipe pile supports are divided into an upstream steel pipe pile support group and a downstream steel pipe pile support group, the cross brace structure is detachably linked between the downstream side inclined cable tower and the downstream side inclined cable tower, and the temporary cable assembly is used for temporarily pulling the inclined cable tower during the construction process. The super-high space twist asymmetric inclined cable tower construction support system and the construction method can realize the effect of cable tower deformation control under the action of few support points and external forces coupled with multiple construction conditions, and achieve the purpose of precise closure of the cable tower.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable tower construction, in particular to a super-high space twist asymmetric inclined cable tower construction support system and a construction method. BACKGROUND

[0002] With the rapid development of urbanization in China, the scale of urban bridge construction is increasing day by day, and bridges have been included in the important elements of urban architecture. In addition to meeting the basic traffic function, it is endowed with more symbolic function and cultural connotation, and the large-span steel tower cable-stayed bridge with complex spatial modeling aesthetic appeal has naturally attracted widespread attention. The safety, aesthetics and geometric appearance of the bridge itself all put strict requirements on the construction precision of the complex shaped cable-stayed bridge, and the traditional cable-stayed bridge construction control technology is facing new challenges.

[0003] For steel cable tower construction, the traditional construction process generally adopts the support scattered assembly method, which uses the multiple support formed by the set steel pipe pile to realize the steel tower assembly and closure under the condition of no stress, so as to ensure the assembly and closure precision of the steel tower. However, for the construction of high steel inclined tower, this support system not only has the problem of huge temporary structure engineering quantity, but also puts high requirements on the flood discharge of the bridge area; and if the support above the bridge deck is located on the main beam, the reinforcement of the corresponding position of the main beam and the overall stiffness of the reinforced main beam have a great influence on the overall structure of the bridge; if the tower and beam are constructed asynchronously, the construction period is greatly affected. SUMMARY

[0004] In view of the deficiencies of the prior art, the technical problem to be solved by the present application is to provide a super-high space twist asymmetric inclined cable tower construction support system and a construction method, which can realize the effect of cable tower deformation control under the condition of few support points and external force action of coupling multiple construction conditions, and achieve the purpose of precise closure of the cable tower.

[0005] In order to achieve the above purpose, the present application is realized by the following technical scheme: the inclined cable tower comprises an upstream inclined cable tower and a downstream inclined cable tower which are connected, the upstream inclined cable tower and the downstream inclined cable tower are respectively located on the upstream side and the downstream side of the bridge, and the super-high space twist asymmetric inclined cable tower construction support system comprises:

[0006] A steel pipe pile support assembly is used for temporarily supporting the inclined cable tower during construction, and the steel pipe pile support assembly has a plurality of steel pipe pile support assemblies, the plurality of steel pipe pile support assemblies are divided into an upstream steel pipe pile support group and a downstream steel pipe pile support group, each steel pipe pile support assembly of the upstream steel pipe pile support group is detachably connected with the upstream inclined cable tower, and each steel pipe pile support assembly of the downstream steel pipe pile support group is detachably connected with the downstream inclined cable tower.

[0007] a cross-bracing structure, detachably connected between the upstream side cable tower and the downstream side cable tower; and

[0008] a temporary cable assembly, detachably connected with the cable tower, for temporarily pulling the cable tower during construction.

[0009] Further, the temporary cable assembly comprises a temporary cable anchor fixed on the ground and a plurality of layers of temporary cables, each layer of the temporary cables comprises two temporary cables, one end of each of the two temporary cables is connected with the temporary cable anchor, and the other end is connected with the cable tower at the same height.

[0010] Further, the temporary cable anchor comprises an upstream side temporary cable anchor and a downstream side temporary cable anchor, the upstream side temporary cable is connected with the upstream side temporary cable anchor, and the downstream side temporary cable is connected with the downstream side temporary cable anchor.

[0011] A construction method of an ultra-high space twisted asymmetric cable tower, using the above-mentioned ultra-high space twisted asymmetric cable tower construction support system, characterized in that it comprises the following steps:

[0012] Establishing a mechanical model, calculating and analyzing the positions and quantities of the steel pipe pile support, the cross-bracing structure, the temporary cable anchor, the temporary cable tower end anchor, and the temporary cable assembly.

[0013] Installing the tower crane, the bridge-under cable tower support, and the temporary cable anchor;

[0014] Installing the bridge-over cable tower support, during the installation process, layer-by-layer tensioning the plurality of layers of temporary cables, and adjusting the cable tower linear by adjusting the plurality of layers of temporary cables.

[0015] Continuing to install the bridge-over cable tower support until the upstream side cable tower and the downstream side cable tower are closed.

[0016] Further, installing the upstream side temporary cable anchor on the ground at the upstream side of the bridge and installing the downstream side temporary cable anchor on the ground at the downstream side of the bridge.

[0017] Further, when the bridge-over cable tower support reaches the first temporary cable anchoring system position, initially tensioning the first layer of temporary cables and adjusting the first layer of temporary cables to adjust the cable tower linear.

[0018] Further, before setting the first layer of temporary cables, a first wall is set between the upstream side cable tower and the downstream side cable tower.

[0019] Further, when the bridge-over cable tower support reaches the second temporary cable anchoring system position, initially tensioning the second layer of temporary cables and the cross-bracing structure, and adjusting the second layer of temporary cables to adjust the cable tower linear.

[0020] Continue to install the bridge cable tower support, and install the second wall attachment above the anchoring position of the second layer of temporary cables.

[0021] Further, when the bridge cable tower support reaches the third temporary cable anchoring system position, the third layer of temporary cables and the cross brace structure are initially tensioned, and the third layer of temporary cables is adjusted to adjust the cable tower line shape, and the closure cross brace bracket is installed at the same time.

[0022] Further, when the bridge cable tower support reaches the fourth temporary cable anchoring system position, the fourth layer of temporary cables and the cross brace structure are initially tensioned, and the fourth layer of temporary cables is adjusted to adjust the cable tower line shape, and then the bridge cable tower support is continuously installed until the upstream side cable tower and the downstream side cable tower are closed.

[0023] Advantages of the present application:

[0024] The above-mentioned super-high spatially twisted asymmetric cable tower construction support system comprises a steel pipe pile support assembly, a cross brace structure and a temporary cable assembly. The steel pipe pile support assembly is used for temporarily supporting the cable tower during construction. The steel pipe pile support assembly has a plurality of steel pipe pile supports. The plurality of steel pipe pile supports are divided into an upstream steel pipe pile support group and a downstream steel pipe pile support group. Each steel pipe pile support of the upstream steel pipe pile support group is detachably connected to the upstream side cable tower. Each steel pipe pile support of the downstream steel pipe pile support group is detachably connected to the downstream side cable tower. The cross brace structure is detachably connected between the upstream side cable tower and the downstream side cable tower. The temporary cable assembly is detachably connected to the cable tower and is used for temporarily pulling the cable tower during construction.

[0025] During construction, through the support system, a few support point support is formed by temporarily setting a plurality of steel pipe pile support assemblies. Temporary cable control is used to control the deformation of the steel tower during construction, and a temporary cross brace structure is added to improve the overall rigidity of the steel tower. Thus, the effect of steel tower deformation control is achieved under the action of a few support point support and coupling of multiple construction conditions, and the purpose of precise closure of the steel tower is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present application, the drawings required in the specific embodiments will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn according to the actual proportions.

[0027] Figure 1 is a schematic view of a super-high spatially twisted asymmetric cable tower;

[0028] Figure 2 is a schematic view of a super-high spatially twisted asymmetric cable tower construction support system provided by an embodiment of the present application;

[0029] Figures 3 to 14 For the use of Figure 2 A process schematic diagram of a construction method of an ultra-high space twisted asymmetric inclined cable tower construction support system shown in FIG.

[0030] Figure 15 For Figure 1 A schematic diagram of an ultra-high space twisted asymmetric inclined cable tower construction method shown in FIG.

[0031] Reference signs:

[0032] 1, inclined cable tower; 11, upstream side inclined cable tower; 12, downstream side inclined cable tower; 2, crawler crane; 3, automobile crane; 4, tower crane

[0033] 100, steel pipe pile support assembly; 110, under-bridge cable tower support; 120, steel box girder reinforcement structure at cable tower support; 130, over-bridge cable tower support; 200, cross-bracing structure; 300, temporary cable assembly; 310, temporary cable anchor; 320, temporary cable; 321, first layer temporary cable; 322, second layer temporary cable; 323, third layer temporary cable; 32, fourth layer temporary cable; 400, first wall attachment; 500, second wall attachment; 600, closure gap cross-bracing bracket. DETAILED DESCRIPTION

[0034] The embodiments of the technical solutions of the present application will be described in detail below in conjunction with the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0035] Please refer to Figures 1 to 15 , the present application provides an ultra-high space twisted asymmetric inclined cable tower construction support system (see Figure 1 and Figure 2 ), which comprises an upstream side inclined cable tower 11 and a downstream side inclined cable tower 12, which are connected to each other, and the upstream side inclined cable tower 11 and the downstream side inclined cable tower 12 are located on the upstream side and the downstream side of the bridge respectively, and the upstream side inclined cable tower 11 and the downstream side inclined cable tower 12 are twisted and asymmetric after closure. The ultra-high space twisted asymmetric inclined cable tower construction support system comprises a steel pipe pile support assembly 100, a cross-bracing structure 200 and a temporary cable assembly 300, which is used for auxiliary construction of an ultra-high space twisted asymmetric inclined cable tower.

[0036] The steel pipe pile support assembly 100 is used for temporarily supporting the cable-stayed tower 1 during construction. In specific construction, multiple steel pipe pile support assemblies 100 can be arranged, and the multiple steel pipe pile support assemblies 100 are divided into an upstream steel pipe pile support group and a downstream steel pipe pile support group. Each steel pipe pile support assembly 100 of the upstream steel pipe pile support group is detachably connected with the upstream side cable-stayed tower 11, and each steel pipe pile support assembly 100 of the downstream steel pipe pile support group is detachably connected with the downstream side cable-stayed tower 12. Through the steel pipe pile support assembly 100, the cable-stayed tower 1 can be provided with powerful support. The steel pipe pile support assembly 100 is divided into the upstream steel pipe pile support group and the downstream steel pipe pile support group, so that the support effect is better according to the torsion and height of the upstream side cable-stayed tower 11 and the downstream side cable-stayed tower 12. After use, the steel pipe pile support assembly 100 can be detached.

[0037] The cross brace structure 200 is detachably connected between the upstream side cable-stayed tower 11 and the downstream side cable-stayed tower 12. During use, the upstream side cable-stayed tower 11 and the downstream side cable-stayed tower 12 are pulled, which is further beneficial to construction. After construction is completed, the first wall 400 is removed.

[0038] The temporary cable assembly 300 is detachably connected with the cable-stayed tower 1 and is used for temporarily pulling the cable-stayed tower 1 during construction. During construction, with the progress of construction, the temporary cable is gradually arranged, and according to the required shape of the cable-stayed tower 1, the cable force of the temporary cable assembly 300 is adjusted to adjust the linear shape of the cable-stayed tower 1.

[0039] In specific construction, the steel pipe pile support assembly 100 can include, from bottom to top, the bridge-under cable tower support 110, the cable tower support steel box beam reinforcing structure 120, and the bridge-over cable tower support 130. The bridge-under cable tower support 110 is supported on the ground, the cable tower support steel box beam reinforcing structure 120 is reinforced at the bridge connection, and the bridge-over cable tower support 130 is detachably connected with the cable-stayed tower 1. In this way, the steel pipe pile support assembly 100 can ensure that the construction load of the cable-stayed tower 1 (upper tower area) is transmitted to the stratum.

[0040] The temporary cable assembly 300 can include a temporary cable anchor 310 and multiple layers of temporary cables 320. The temporary cable anchor 310 is fixed on the ground, and the multiple layers of temporary cables 320 are arranged layer by layer from bottom to top. Each layer of temporary cable includes two temporary cables, one end of each temporary cable is connected with the temporary cable anchor 310, and the other end is connected with the cable-stayed tower 1 at the same height.

[0041] In use, the temporary cable 320 is arranged layer by layer according to the construction progress. Through the cable force of each layer of temporary cable, the linear shape of the cable-stayed tower 1 is adjusted layer by layer. The temporary cable assembly 300 can not only play a pulling and fixing role on the cable-stayed tower 1, but also facilitate the adjustment of the linear shape of the cable-stayed tower 1.

[0042] Please continue to refer to Figure 1 andFigure 2 The temporary cable anchor 310 can be divided into an upstream side temporary cable anchor and a downstream side temporary cable anchor, and in construction, the upstream side temporary cable is connected with the upstream side temporary cable anchor 310, and the downstream side temporary cable is connected with the upstream side temporary cable anchor 310, so that the component force of the temporary cable can be reduced, and the pulling effect is improved.

[0043] In the embodiment, the support system can further include a first wall 400. The first wall 400 is arranged between the upstream side cable tower 11 and the downstream side cable tower 12 and located at a middle position of the cable tower 1. The first wall 400 pulls the upstream side cable tower 11 and the downstream side cable tower 12 at the middle position, which is beneficial to the construction of the cable tower 1. After the construction is completed, the first wall 400 is removed.

[0044] In addition, the support system can further include a second wall 500 and a closure gap cross brace bracket 600. The second wall 500 is detachably arranged between the upstream side cable tower 11 and the downstream side cable tower 12 and located between the first wall 400 and the cross brace structure 200. The second wall 500 pulls the upstream side cable tower 11 and the downstream side cable tower 12 at the middle position, which is beneficial to the construction of the top part of the cable tower 1. After the construction is completed, the second wall 500 is removed. The closure gap cross brace bracket 600 is detachably arranged between the upstream side cable tower 11 and the downstream side cable tower 12 and located above the cross brace structure 200. The closure gap cross brace bracket 600 pulls the top closure gap of the cable tower 1, which is beneficial to the closure of the cable tower 1 on the upper and lower sides. After the construction is completed, the closure gap cross brace bracket 600 is removed.

[0045] The application further provides a construction method of the super-high space twisted asymmetric cable tower, which adopts the super-high space twisted asymmetric cable tower construction support system and includes the following steps.

[0046] S110, a mechanical model is established, and the positions and quantities of the steel pipe pile support assembly 100, the cross brace, the temporary cable anchor 310, the temporary cable tower end anchor and the temporary cable assembly are calculated and analyzed.

[0047] S120, the tower crane 4, the bridge under cable tower support 110, the upstream side temporary cable anchor and the downstream side temporary cable anchor are installed.

[0048] S130, the bridge over cable tower support is installed, in the installation process, the multiple layers of temporary cables are tensioned layer by layer, and the cable tower 1 line is adjusted by adjusting the multiple layers of temporary cables respectively.

[0049] S140, the bridge over cable tower support is continuously installed until the upstream side cable tower 11 and the downstream side cable tower 12 are closed.

[0050] The specific construction steps are as follows.

[0051] First, install the tower crane 4, the underbridge cable tower support 110, the upstream temporary cable anchorage, and the downstream temporary cable anchorage. Specifically:

[0052] 1) First, use the truck crane 3 to install the tower crane 4 standard section on the trestle. At this time, the total height of the tower crane 4 standard section should be lower than the bottom of the steel box girder;

[0053] 2) Before the steel box girder reinforcement structure 120 is in place at the pylon support, install the underbridge pylon support 110, the upstream temporary cable anchorage, and the downstream temporary cable anchorage. Install the upstream temporary cable anchorage on the ground on the upstream side of the bridge, and install the downstream temporary cable anchorage on the ground on the downstream side of the bridge.

[0054] 3) After the steel beams in the tower area are in place, install the tower beam consolidation section and weld the V-leg 5 to the main beam consolidation section.

[0055] Second, install the bridge tower support 130. When the bridge tower support 130 reaches the first temporary cable anchoring system position, initially tension the first layer of temporary cables 311 and adjust the first layer of temporary cables 311 to adjust the linear shape of the inclined tower 1. Specifically:

[0056] 1) Use the mobile crane 3 to install the starting section of the bridge pylon support 130. Note that the installation height of the bridge pylon support 130 must be lower than the first independent lifting height of the tower crane 4 (see Figure 4 );

[0057] 2) Use crawler crane 2 to lift the 0-63m pylon segment above the bridge deck on the downstream side of the inclined pylon 12 (see Figure 5 ), after the 0-63m cable tower segment of the downstream inclined cable tower 12 is hoisted, the crawler crane 2 is dismantled to a suitable weight, and then moved to the upstream hoisting platform to install the 0-63m cable tower segment above the bridge deck of the upstream inclined cable tower 11 (see Figure 6 );

[0058] 3) Continue to raise the tower crane 4. Specifically, the crawler crane 2 is installed on the downstream hoisting platform. The truck crane 3 assists in connecting the tower crane 4 on the bridge deck. Note: Since the construction period of the tower crane 4 single section jacking construction is consistent with the installation period of the steel tower single section, considering the actual situation on site, the tower crane 4 jacking construction can be synchronized with the upstream tower limb (see Figure 7 );

[0059] 4) The first wall of the installation site is 400 (see Figure 8 ): Tower crane 4 is raised to the maximum independent height (90m below the hook) and the first wall 400 is installed (elevation +469.2m);

[0060] 5) Install the first layer of temporary cable 311 and tension: the first wall 400 is installed, the tower crane 4 continues to lift 60m (total height of 150m below the hook), the tower crane 4 hoists one segment of the upstream side cable tower 11 and the downstream side cable tower 12, and installs the first layer of temporary cable 321 and tension (initial tension 180t) (see Figure 8 ). The upstream side temporary cable is connected to the upstream side temporary cable anchor, and the downstream side temporary cable is connected to the upstream side temporary cable anchor, and the first linear adjustment of the cable tower is completed.

[0061] Third, continue to install the bridge cable tower support 130, and when the bridge cable tower support 130 reaches the next temporary cable anchor system position, install the cross brace structure 200 position, adjust the linear shape according to the construction monitoring or install the cross brace structure 200, specifically:

[0062] 1) Install the second layer of temporary cable 322 and tension (see Figure 9 ): The tower crane 4 or the crawler crane 2 continues to install the cable tower 1 segment, and the tower crane 4 hoists the tower limb segment to the bridge deck 96m position, installs the second layer of temporary cable 322 and tension (tension 50t), and adjusts the linear shape according to the construction monitoring.

[0063] 2) Install the cross brace structure 200: continue to install the bridge cable tower support 130, and when the bridge direction cable tower 1 support reaches the cross brace structure 200 position, the tower crane 4 hoists the cross brace and installs the cross brace structure 200 (see Figure 10 ).

[0064] 3) Install the second wall 500 (see Figure 10 ), continue to install the bridge cable tower support 130, and when the second wall 500 position is reached, install the second wall 500, and after the second wall 500 is installed, the tower crane is lifted by 35m (total height of 185m below the hook).

[0065] Fourth, continue to install the bridge cable tower support 130, and install the third layer of temporary cable 323, and adjust the temporary cable tension, control the steel tower deformation and other temporary structure internal force, the specific steps are:

[0066] 1) Continue to hoist the cable tower segment to the bridge deck 120m position, install the third layer of temporary cable 323 and tension (upstream side bridge deck 118m position, downstream side bridge deck 120m position, tension 140t), and perform the third linear adjustment (see Figure 11 );

[0067] 2) Install the closure cross brace bracket 600 (see Figure 12 ).

[0068] Fifth, continue to install the inclined cable tower 1 segment, and hang the fourth layer of temporary cable 324, and adjust the temporary cable force, control the steel tower deformation and other temporary structure internal force size, (see Figure 13 ),

[0069] Continue to hoist the tower segment to the position above the bridge deck 128m, hang the fourth layer of temporary cable 324 and tension (about 124m above the upstream side of the bridge deck, tension force 140t; about 128m above the downstream side of the bridge deck, tension force 50t), and carry out the fourth linear adjustment;

[0070] Sixth, the upstream side inclined cable tower 11 and the downstream side inclined cable tower 12 are closed and installed, specifically:

[0071] Install the remaining inclined cable tower 1 segment, butt joint the upstream side inclined cable tower 11 and the downstream side inclined cable tower 12, complete the installation of the entire inclined cable tower 1, and the steel tower closure joint is closed and installed by temperature matching cutting.

[0072] The inclined cable tower 1 construction support system and the construction method have the following advantages:

[0073] 1) The support system can ensure the synchronous construction of the steel beam, and ensure the construction period.

[0074] 2) The support system is composed of the bridge under cable tower support 110, the cable tower support steel box beam reinforcing structure 120 and the bridge over cable tower support 130, which can control the construction line of the inclined cable tower 1 and the closure joint precision under safe conditions, reduce the temporary structure engineering quantity, reduce the construction cost, and improve the construction efficiency.

[0075] 3) The support system greatly reduces the influence on the bridge structure itself, and guarantees the bridge line shape.

[0076] 4) The support system greatly reduces the influence on the environment.

[0077] 5) The application has the advantages of simple operation, convenient use, reduced construction cost and improved construction efficiency.

[0078] The above examples are only used to illustrate the technical solutions of the application, but not to limit them; although the application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application, and they should be covered in the scope of the claims and the description of the application.

Claims

1. A method for constructing an ultra-high spatial twisted asymmetric inclined cable tower, using an ultra-high spatial twisted asymmetric inclined cable tower construction support system, characterized by: The inclined cable tower includes an upstream inclined cable tower and a downstream inclined cable tower connected to each other. The upstream inclined cable tower and the downstream inclined cable tower are respectively located on the upstream side and the downstream side of the bridge. When the upstream inclined cable tower and the downstream inclined cable tower are closed together, a twisted asymmetric inclined cable tower is formed. The construction support system of the ultra-high spatial twisted asymmetric inclined cable tower includes: A steel pipe pile support assembly is used to temporarily support the inclined cable tower during construction. There are multiple steel pipe pile support assemblies, which are divided into an upstream steel pipe pile support group and a downstream steel pipe pile support group. Each steel pipe pile support assembly in the upstream steel pipe pile support group is detachably connected to the upstream inclined cable tower; each steel pipe pile support assembly in the downstream steel pipe pile support group is detachably connected to the downstream inclined cable tower. A cross bracing structure detachably connected between the upstream inclined cable tower and the downstream inclined cable tower; and A temporary cable assembly, detachably connected to the inclined cable tower, for temporarily pulling the inclined cable tower during construction; The construction method includes: establishing a mechanical model, calculating and analyzing the position and quantity of steel pipe pile supports, cross braces, temporary cable anchors, temporary cable tower end anchors, and temporary cable assemblies; Install tower cranes, underbridge cable tower supports, and temporary cable anchors; Install the cable tower supports on the bridge. During the installation process, multiple layers of temporary cables are tensioned layer by layer, and the linear shape of the inclined cable tower is adjusted by adjusting the multiple layers of temporary cables separately. Continue to install the cable tower supports on the bridge until the upstream inclined cable tower and the downstream inclined cable tower are connected.

2. The construction method of the super-high spatial twisted asymmetric inclined cable tower according to claim 1 is characterized in that: The temporary cable assembly includes a temporary cable anchor and multiple layers of temporary cables. The temporary cable anchor is fixed to the ground. The multiple layers of temporary cables are arranged layer by layer from bottom to top. Each layer of temporary cables includes two temporary cables. One end of the two temporary cables is connected to the temporary cable anchor, and the other end is connected to the inclined cable tower at the same height.

3. The construction method of the super-high space twisted asymmetric inclined cable tower according to claim 1 is characterized in that: The temporary cable anchor includes an upstream temporary cable anchor and a downstream temporary cable anchor, the upstream temporary cable is connected to the upstream temporary cable anchor, and the downstream temporary cable is connected to the downstream temporary cable anchor.

4. The construction method of the super-high spatial twisted asymmetric inclined cable tower according to claim 1 is characterized in that: An upstream temporary guy cable anchor is installed on the ground on the upstream side of the bridge, and a downstream temporary guy cable anchor is installed on the ground on the downstream side of the bridge.

5. The construction method of the super-high spatial twisted asymmetric inclined cable tower according to claim 4 is characterized in that: When the cable tower support on the bridge reaches the first temporary cable anchoring system position, the first layer of temporary cables is initially tensioned and adjusted to adjust the linear shape of the inclined cable tower.

6. The construction method of the super-high spatial twisted asymmetric inclined cable tower according to claim 5 is characterized in that: Before setting up the first layer of temporary cables, the first attached wall is set between the upstream inclined cable tower and the downstream inclined cable tower.

7. The construction method of the super-high space twisted asymmetric inclined cable tower according to claim 6 is characterized in that: When the bridge tower support reaches the second temporary cable anchoring system position, the second layer of temporary cables and cross bracing structure are initially tensioned, and the second layer of temporary cables are adjusted to adjust the line shape of the inclined tower. The bridge tower support is then installed, and the second attached wall is installed above the anchoring position of the second layer of temporary cables.

8. The construction method of the super-high space twisted asymmetric inclined cable tower according to claim 7 is characterized in that: When the cable tower support on the bridge reaches the third temporary cable anchoring system position, the third layer of temporary cables and cross bracing structure are initially tensioned. The third layer of temporary cables is adjusted to adjust the linear shape of the inclined cable tower, and the cross bracing bracket of the joint is installed at the same time.

9. The construction method of the super-high space twisted asymmetric inclined cable tower according to claim 8 is characterized in that: When the cable tower support on the bridge reaches the position of the fourth temporary cable anchoring system, the fourth layer of temporary cables and cross bracing structure are initially tensioned, and the line shape of the inclined cable tower is adjusted by adjusting the fourth layer of temporary cables. Then, the cable tower support on the bridge is installed until the upstream and downstream inclined cable towers are connected.

Images