Abutment type anchoring system and anchoring method

Abstract

The present disclosure relates to the technical field of bridge construction, and in particular to an abutment type anchoring system and an anchoring method. The abutment type anchoring system includes: a buried pipe, a cable, a distribution beam and a steel bracket; the buried pipe is inclined at a set angle in the abutment, the first end and the second end of the buried pipe both pass through the abutment and extend to the outside of the abutment, and the first end of the buried pipe is lower than the height of the second end; the cable is placed in the buried pipe, one end of the cable passes through the first end of the buried pipe and is fixedly connected to the abutment; the steel bracket is arranged at the second end of the buried pipe. In the abutment type anchoring system, the buried pipe can be reserved in the abutment in advance when the abutment is cast, or it can be drilled and buried in the abutment later. One end of the cable passes through the buried pipe and is anchored to the abutment, so that the abutment itself can be used as the anchoring foundation. Not only is the structure reliable, but there is no need to build a set of complex anchoring steel frames separately, which greatly improves the construction efficiency.

Description

Technical Field

[0001] The present disclosure relates to the technical field of bridge construction, and in particular to an abutment type anchoring system and an anchoring method. Background Art

[0002] At present, when building a suspension bridge, it is often necessary to build a large steel anchoring system, which consists of an anchor beam, an anchor concrete step, and an anchor steel bracket, so as to ensure that the cable can extend toward the middle at a set angle at the end. The anchors used here are long, numerous, difficult to build, and costly. It takes too much time to build the anchor steel frame and the guide steel pipe frame structure, and the cost of the entire process is too high. Summary of the invention

[0003] In order to solve the above technical problems, the present disclosure provides an abutment type anchoring system and an anchoring method.

[0004] In a first aspect, the present disclosure provides an abutment anchorage system, comprising: an embedded pipe, a cable, a distribution beam, and a steel support;

[0005] The buried pipe is tilted and arranged in the abutment at a set angle, the first end and the second end of the buried pipe both pass through the abutment and extend to the outside of the abutment, and the first end of the buried pipe is lower than the height of the second end thereof;

[0006] The cable is placed in the buried pipe, and one end of the cable passes through the first end of the buried pipe and is fixedly connected to the abutment;

[0007] The steel support is arranged at the second end of the buried pipe, and the steel support is fixed on the abutment;

[0008] The distribution beam is installed on the steel support, and part of the cables are fixed on the distribution beam.

[0009] Optionally, a grid structure is provided on the distribution beam, and the portion where the cable is connected to the distribution beam is located within the grid structure.

[0010] Optionally, the distribution beam includes two I-beams arranged in parallel, the cable is located between the two I-beams, one of the wing plates of the I-beam is in contact with the surface of the steel support, and the other wing plate is used to connect the cable.

[0011] Optionally, it also includes a grid steel plate, which is arranged between the two I-beams and perpendicular to the I-beams; the grid steel plate is correspondingly arranged below the cable and is used to support the cable.

[0012] Optionally, a plurality of the grid steel plates are arranged along the extension direction of the I-beam, and the grid structure is formed between two adjacent grid steel plates.

[0013] Optionally, it also includes a fixed steel plate, which is sleeved on the cable and fixedly connected to the cable, and the fixed steel plate is fixedly connected to the distribution beam.

[0014] Optionally, a limit plate is further included, wherein the limit plate is arranged on the first end of the buried pipe, the limit plate is arranged on the abutment, and one end of the cable is fixedly connected to the limit plate.

[0015] Optionally, the steel support is attached to the abutment, the end face of the steel support facing away from the abutment is an anchoring end face, the anchoring end face is perpendicular to the cable, and the distribution beam is arranged on the anchoring end face.

[0016] Optionally, the cable includes a first cable and a second cable, the first cable includes eight wound steel strands, the second cable includes fourteen wound steel strands, and the first cable and the second cable are staggered in the vertical direction.

[0017] In a second aspect, the present disclosure provides an anchoring method using the abutment anchoring system as described above, comprising the following steps:

[0018] S1. When making the abutment, the buried pipe is reserved in the abutment along the set angle;

[0019] S2, passing one end of the cable through the fixed steel plate, the grid structure and the buried pipe in sequence, pre-tensioning the cable (2), and finally fixing the end of the tensioned cable (2) on the limit plate (7);

[0020] S3. Fix the fixing steel plate on the distribution beam in the extension direction of the buried pipe.

[0021] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0022] The abutment type anchoring system provided by the present invention can reserve the buried pipe in the abutment in advance when the abutment is cast, or can be buried in the abutment by drilling holes later. One end of the cable passes through the buried pipe and is anchored to the abutment, so that the abutment itself can be used as the anchoring foundation. Not only is the structure reliable, but there is no need to build a set of complex anchoring steel frames separately, which greatly reduces the project cost and improves the construction efficiency. Through the provision of steel brackets, a reliable support position can be provided for the middle section of the cable, so that the cable can be initially maintained at a set angle. The distribution beam is used to fix the cable on the steel bracket, and the contact area between the cable and the steel bracket can be effectively increased, thereby increasing the stability and reliability of the connection between the cable and the steel bracket. Through the cooperation of the distribution beam and the steel bracket, the two ends of the cable extending into the abutment can be locked and fixed, thereby fixing the angle of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 It is a structural schematic diagram of the steel bracket according to the embodiment of the present disclosure;

[0026] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0027] Figure 3 It is a structural schematic diagram of the abutment type anchoring system described in an embodiment of the present disclosure;

[0028] Figure 4 This is a structural diagram of the side of the abutment facing the steel support;

[0029] Figure 5 This is a structural diagram of the side of the abutment facing away from the steel support;

[0030] Figure 6 It is a schematic structural diagram of the anchoring assembly described in an embodiment of the present disclosure.

[0031] Among them, 1. buried pipe; 2. cable; 3. distribution beam; 31. grid structure; 32. I-beam; 33. grid steel plate; 4. steel support; 5. abutment; 51. limiting groove; 6. fixed steel plate; 7. limiting plate; 8. anchoring assembly; 81. clip; 82. anchor plate. DETAILED DESCRIPTION

[0032] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0034] At present, when building a suspension bridge, it is often necessary to build a large anchor steel frame as the base of the abutment anchor system, and also to build a steel pipe frame structure to fix the angle of the cable, so as to ensure that the cable can extend toward the middle at the set angle at the end. The steel pipes used here are long and numerous, difficult to build, and the cost is quite high. It takes too much time to build the anchor steel frame and the guide steel pipe frame structure, and the cost of the whole process is too high.

[0035] Based on this, the present embodiment provides an abutment type anchoring system and anchoring method. The buried pipe can be reserved in the abutment in advance when the abutment is cast, or it can be drilled and buried in the abutment later. One end of the cable passes through the buried pipe and is anchored to the abutment, so that the abutment itself can be used as the anchoring foundation. Not only is the structure reliable, but there is no need to build a set of complex anchoring steel frames separately, which greatly reduces the project cost and improves the construction efficiency. Through the setting of the steel bracket, a reliable support position can be provided for the middle section of the cable, so that the cable can be initially maintained at the set angle. The cable is fixed to the steel bracket by the distribution beam, and the contact area between the cable and the steel bracket can be effectively increased, thereby increasing the stability and reliability of the connection between the cable and the steel bracket. Through the cooperation of the distribution beam and the steel bracket, the two ends of the cable extending into the abutment can be locked and fixed, and then the angle of the cable is fixed. The following is a detailed description of it through specific embodiments:

[0036] Reference Figures 1 to 6 As shown, the present embodiment provides an abutment type anchoring system comprising: a buried pipe 1, a cable 2, a distribution beam 3 and a steel support 4; the buried pipe 1 is inclinedly arranged in the abutment 5 along a set angle, the first end and the second end of the buried pipe 1 both pass through the abutment 5 and extend to the outside of the abutment 5, and the first end of the buried pipe 1 is lower than the height of the second end thereof; the cable 2 is placed in the buried pipe 1, one end of the cable 2 passes through the first end of the buried pipe 1 and is fixedly connected to the abutment 5; the steel support 4 is arranged at the second end of the buried pipe 1, and the steel support 4 is fixed on the abutment 5; the distribution beam 3 is installed on the steel support 4, and part of the cable 2 is fixed on the distribution beam 3.

[0037] Among them, the buried pipe 1 can be reserved in the abutment 5 in advance when the abutment 5 is cast, or it can be drilled and buried in the abutment 5 later. One end of the cable 2 passes through the buried pipe 1 and is anchored to the abutment 5, so that the abutment 5 itself can be used as an anchoring foundation. Not only is the structure reliable, but there is no need to build a set of complex anchoring steel frames separately, which greatly reduces the project cost and improves the construction efficiency; through the setting of the steel bracket 4, a reliable support position can be provided for the middle section of the cable 2, so that the cable 2 can be initially maintained at the set angle; the distribution beam 3 is used to fix the cable 2 on the steel bracket 4, and the contact area between the cable 2 and the steel bracket 4 can be effectively increased, thereby increasing the stability and reliability of the connection between the cable 2 and the steel bracket 4; through the cooperation of the distribution beam 3 and the steel bracket 4, the two ends of the cable 2 extending into the abutment 5 can be locked and fixed, and then the angle of the cable 2 is fixed.

[0038] Continue to refer to Figure 2 As shown, a grid structure 31 is provided on the distribution beam 3, and the portion where the cable 2 is connected to the distribution beam 3 is located within the grid structure 31; through the provision of the grid structure 31, a reserved position can be provided for the cable 2, so that the portion of the cable 2 extending out of the abutment 5 provides a resting structure.

[0039] Continue to refer to Figure 1 and Figure 2 As shown, the distribution beam 3 includes two parallel I-beams 32, and the cable 2 is located between the two I-beams 32. One of the wing plates of the I-beam 32 is in contact with the surface of the steel support 4, and the other wing plate is used to connect the cable 2. By using two parallel I-beams 32, the overall strength of the distribution beam 3 can be ensured, and the wing plates of the I-beams 32 can be effectively used to provide a supporting surface and a connecting surface. The force points applied by the cable 2 to the distribution beam 3 are evenly distributed by the wing plates of the two I-beams 32 to the entire supporting surface, which greatly reduces the influence of the stress at the connection between the cable 2 and the steel support 4 on the entire anchoring system.

[0040] Continue to refer to Figure 2 As shown, the anchoring system also includes a grid steel plate 33, which is arranged between two I-beams 32, and the grid steel plate 33 is arranged perpendicular to the I-beams 32; the grid steel plate 33 is correspondingly arranged below the cable 2 and is used to support the cable 2. In some embodiments, a plurality of grid steel plates 33 are arranged along the extension direction of the I-beam 32, and a grid structure 31 is formed between two adjacent grid steel plates 33; through the arrangement of the grid steel plates 33, not only can a reliable connection be provided for the two I-beams 32 of the distribution beam 3 to ensure the strength of the distribution beam 3, but also two adjacent grid steel plates 33 and two I-beams 32 can be used to surround the grid structure 31, so that the entire distribution beam 3 can use a simple structure to achieve the functions of dispersing the stress on the cable 2, providing a preset space for the cable 2, and strengthening the strength of the distribution beam 3.

[0041] Continue to refer to Figure 2 As shown, the anchoring system also includes a fixed steel plate 6, which is sleeved on the cable 2 and fixedly connected to the cable 2, and the fixed steel plate 6 is fixedly connected to the distribution beam 3; it should be understood that a circular hole structure matching the cross-section of the cable 2 is opened in the middle of the fixed steel plate 6, and the cable 2 can be fixedly connected to the fixed steel plate 6 by structures such as bolts. When the fixed steel plate 6 is connected to the cable 2, the position of the fixed steel plate 6 on the distribution beam 3 can be adjusted to achieve the action of fine-tuning the angle of the cable 2. After the adjustment is completed, the fixed steel plate 6 is fixed to the distribution beam 3. The fixed steel plate 6 can be connected by welding, riveting, bolting, etc., as long as it can be ensured that the fixed steel plate 6 is firmly fixed on the distribution beam 3; in some embodiments, the fixed steel plate 6 can be a square steel plate, and its peripheral side is fitted with the wing plates of the two I-beams 32 and welded.

[0042] Continue to refer to Figure 3 and Figure 6 As shown, the anchoring system also includes a limit plate 7, which is arranged at the first end of the buried pipe 1, and the limit plate 7 is arranged on the abutment 5, and one end of the cable 2 is fixedly connected to the limit plate 7; through the setting of the limit plate 7, the cable 2 can be stably and firmly anchored on the abutment 5, and the contact area between the cable 2 and the abutment 5 can be increased, and the force points can be dispersed to the entire contact surface between the limit plate 7 and the abutment 5, thereby improving the reliability of the anchoring point.

[0043] Continue to refer to Figure 6 As shown, an anchor assembly 8 is provided at the limit plate 7, and the anchor assembly 8 anchors and fixes the steel strand in the cable 2, so as to achieve the purpose of anchoring the end of the cable 2 on the abutment 5. The setting of the limit plate 7 can also make it more convenient to install the anchor assembly 8, wherein the cable 2 requires at least two anchor plates 82 when passing through the anchor assembly 8, and a clip 81 is provided between the cable 2 and the anchor plate 82, and the anchor plate 82 is installed on the anchor assembly 8, and the cable 2 is unidirectionally locked on the anchor plate 82 by the clip 81, thereby completing the anchoring of the cable 2.

[0044] Continue to refer to Figure 6 As shown, a limiting groove 51 matching the shape of the limiting plate 7 is provided on the abutment 5. Through the setting of the limiting groove 51, it is more convenient to position and install the limiting plate 7 and the anchoring assembly 8, thereby realizing the rapid limiting of the steel strand in the cable 2.

[0045] Continue to refer to Figure 3As shown, the steel bracket 4 is attached to the abutment 5, and the end face of the steel bracket 4 facing away from the abutment 5 is the anchoring end face, the anchoring end face is perpendicular to the cable 2, and the distribution beam 3 is arranged on the anchoring end face; when there are multiple groups of cables 2, the anchoring end face can be made approximately perpendicular to the extension direction of each group of cables 2. The inclined anchoring end face can make it easier to connect the cable 2 and the distribution beam 3, and can also reduce the number of bending parts of the cable 2, thereby ensuring the mechanical strength of the cable 2 and improving the service life and reliability of the entire anchoring system.

[0046] In some embodiments, the cable 2 includes a first cable and a second cable, the first cable includes eight intertwined steel strands, the second cable includes fourteen intertwined steel strands, and the first cable and the second cable are staggered in the vertical direction; it should be noted that the first cable and the second cable can be arranged in a plum blossom shape on the abutment 5, and the first cable and the second cable can also include other numbers of steel strands, as long as they can meet the construction requirements of the bridge.

[0047] In a second aspect, the present disclosure provides an anchoring method using the abutment anchoring system as described above, comprising the following steps:

[0048] S1. When manufacturing the abutment 5, the buried pipe 1 is reserved in the abutment 5 along a set angle, or the buried pipe 1 can be inserted after drilling a hole in the abutment 5;

[0049] S2, passing one end of the cable 2 through the fixed steel plate 6, the grid structure 31 and the buried pipe 1 in sequence, pre-tightening the cable 2, and finally fixing the end of the tensioned cable 2 on the limit plate 7;

[0050] S3. Fix the fixing steel plate 6 on the distribution beam 3 in the extending direction of the buried pipe 1.

[0051] The specific implementation method and implementation principle are the same as those in the above embodiment, and can bring the same or similar technical effects, which will not be described one by one here. For details, please refer to the description of the above-mentioned abutment type anchoring system embodiment.

[0052] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0053] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bridge abutment anchorage system, characterized in that: include: buried pipe (1), cable (2), distribution beam (3) and steel support (4); The buried pipe (1) is arranged in an inclined manner at a set angle in the abutment (5), the first end and the second end of the buried pipe (1) both pass through the abutment (5) and extend to the outside of the abutment (5), and the first end of the buried pipe (1) is lower than the height of the second end thereof; The cable (2) is placed in the buried pipe (1), and one end of the cable (2) passes through the first end of the buried pipe (1) and is fixedly connected to the abutment (5); The steel support (4) is arranged at the second end of the buried pipe (1), the steel support (4) is fixed on the abutment (5), the end face of the steel support (4) facing away from the abutment (5) is an anchoring end face, and the anchoring end face is arranged perpendicular to the cable (2); The distribution beam (3) is mounted on the anchoring end face of the steel support (4), part of the cable (2) is fixed on the distribution beam (3), a grid structure (31) is provided on the distribution beam (3), and the part of the cable (2) connected to the distribution beam (3) is located in the grid structure (31); It also includes a fixed steel plate (6), wherein the fixed steel plate (6) is sleeved on the cable (2) and fixedly connected to the cable (2), and the fixed steel plate (6) is fixedly connected to the distribution beam (3); It also comprises a limit plate (7), wherein the limit plate (7) is arranged at the first end of the buried pipe (1), the limit plate (7) is arranged on the abutment (5), and one end of the cable (2) is fixedly connected to the limit plate (7).

2. The abutment anchorage system according to claim 1, characterized in that: The distribution beam (3) comprises two parallel I-beams (32), the cable (2) is located between the two I-beams (32), one wing plate of the I-beam (32) is in contact with the surface of the steel support (4), and the other wing plate is used to connect the cable (2).

3. The abutment anchorage system according to claim 2, characterized in that: It also includes a grid steel plate (33), wherein the grid steel plate (33) is arranged between the two I-beams (32), and the grid steel plate (33) is arranged perpendicular to the I-beams (32); the grid steel plate (33) is correspondingly arranged below the cable (2) and is used to support the cable (2).

4. The abutment anchorage system according to claim 3, characterized in that: A plurality of the grid steel plates (33) are arranged along the extension direction of the I-beam (32), and the grid structure (31) is formed between two adjacent grid steel plates (33).

5. The abutment anchorage system according to claim 1, characterized in that: The steel support (4) is attached to the abutment (5), the end face of the steel support (4) facing away from the abutment (5) is an anchoring end face, the anchoring end face is perpendicular to the cable (2), and the distribution beam (3) is arranged on the anchoring end face.

6. The abutment anchorage system according to claim 1, characterized in that: The cable (2) comprises a first cable and a second cable, wherein the first cable comprises eight wound steel strands, and the second cable comprises fourteen wound steel strands, and the first cable and the second cable are staggered in the vertical direction.

7. An anchoring method using the abutment anchoring system according to any one of claims 1 to 6, characterized in that: The steps include: S1. When manufacturing the abutment (5), the buried pipe (1) is reserved in the abutment (5) along a set angle; S2, passing one end of the cable (2) through the fixed steel plate (6), the grid structure (31) and the buried pipe (1) in sequence, pre-tensioning the cable (2), and finally fixing the end of the tensioned cable (2) on the limit plate (7); S3. Fix the fixing steel plate (6) on the distribution beam (3) in the extension direction of the buried pipe (1).

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