Embedded force transmission anchor wall structure of suspension bridge

Abstract

The present invention relates to an embedded force transmission anchor wall structure of a suspension bridge, comprising the following steps: opening a reserved hole on a shear steel plate according to the design position of the anchor cable, tying the steel cage of the shear wall, and simultaneously inserting the segment of the force transmission cylinder; the force transmission anchor cable and the load-bearing anchor cable pass through the force transmission cylinder respectively and are fixed on the anchor head; and concrete pouring is performed. The beneficial effect of the present invention is that by arranging a force transmission cylinder with a force transmission key between multiple layers of shear steel plates, compared with the prior art, the fixing strength between the anchor cable anchoring end and the shear wall is increased, the force transmission between the anchor cable and the shear wall is made more uniform, the mechanical properties of the internal materials are fully utilized, and the force transmission structure is prevented from being damaged by concentrated stress.

Description

Technical Field

[0001] The invention belongs to the research field of suspension bridge force transmission system, and in particular relates to an embedded force transmission anchor wall structure of a suspension bridge. Background Art

[0002] The anchor connection structure is an important structure of the suspension bridge that transmits the tension of the main cable to the anchor body.

[0003] For example, CN112301887A proposes a main cable anchoring system and construction method for a suspension bridge under deep bedrock conditions, which uses an anchor wall to transfer the main cable tension. The anchor wall and the anchor cable are arranged in such a way that the free end of the anchor cable is fixed to the surface of the anchor wall. This method has the following problems: 1) The anchor cable tension cannot be transferred to the inside of the anchor wall, and the mechanical properties of the materials inside the anchor wall cannot be fully utilized; 2) It is easy to cause stress concentration on the surface of the anchor wall, which not only affects the bearing capacity of the anchor connection structure, but also threatens the overall safety of the suspension bridge.

[0004] Therefore, a suspension bridge force transmission structure is proposed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an embedded force-transmitting anchor wall structure for a suspension bridge.

[0006] The embedded force transmission anchor wall structure of the suspension bridge comprises: a shear wall, an anchor cable anchor head, a force transmission cylinder and an anchor cable, wherein the shear wall comprises a steel cage and a shear steel plate, wherein several layers of shear steel plates are sandwiched in the steel cage, the force transmission cylinder comprises several segments, and adjacent segments are sequentially connected by connecting threads and penetrate several layers of shear steel plates, and each force transmission cylinder segment is provided with a force transmission key, which is located between two adjacent layers of shear steel plates; the force transmission cylinder, the steel cage and the shear steel plate are all cast in the concrete of the shear wall; the anchor cable penetrates the shear wall through the force transmission cylinder and is anchored through the anchor head;

[0007] The anchor cables include load-transmitting anchor cables and load-bearing anchor cables, and the load-transmitting anchor cables and the load-bearing anchor cables are anchored on both sides of the shear wall respectively.

[0008] Preferably, one end of the anchor head is inserted into the force transmission cylinder, and the other end extends out of the shear wall surface. The end of the anchor head inserted into the force transmission cylinder is spherical, and the anchor head and the force transmission cylinder are both provided with channels for the anchor cable to pass through.

[0009] Preferably, among the several force transmission cylinder segments connected in sequence, the inner side of one end of the force transmission cylinder segment connected to the anchor head is provided with a corresponding spherical concave structure, and the other end is provided with a concave thread, and the other end of the force transmission cylinder segment is provided with a connecting thread at one end, and a concave thread at the other end.

[0010] Preferably, the load-transmitting anchor cables and the load-bearing anchor cables are respectively arranged in hexagonal rings on the shear wall, and the hexagonal rings formed by the load-transmitting anchor cables and the load-bearing anchor cables are alternately distributed from the center of the shear wall to the outside.

[0011] Preferably, the ends of the force-transmitting anchor cables away from the shear wall converge at one point, and the ends of the force-bearing anchor cables away from the shear wall diverge from each other.

[0012] Preferably, a reserved hole for the force transfer cylinder to pass through is provided on the shear steel plate, the size of the reserved hole is smaller than the size of the force transfer key, and the reserved hole is provided in the gap of the steel cage.

[0013] The construction method of the embedded force transmission anchor wall structure of the suspension bridge comprises the following steps:

[0014] Step 1: Open a reserved hole on the shear steel plate according to the designed position of the anchor cable, tie the steel cage of the shear wall, and simultaneously insert the segments of the force transfer cylinder into the reserved hole of the shear steel plate and connect them until the steel cage is completed;

[0015] Step 2: Pass the force transmission anchor cable and the force bearing anchor cable through the force transmission cylinder respectively and fix them on the anchor head;

[0016] Step 3: Pour concrete on the shear wall, and cast the force transfer cylinder, steel cage and shear steel plate into one to form a force transfer wall structure.

[0017] Preferably, in step one, shear steel plates are installed in layers, and after installing one layer of shear steel plates, the force transfer cylinder segments are inserted into the reserved holes, and then the next layer of shear steel plates is set and the force transfer cylinder segments are inserted, and adjacent segments of the force transfer cylinder are fixedly connected by connecting threads.

[0018] Preferably, in step one, the direction of inserting the force transfer cylinder is set according to the anchor type corresponding to the reserved hole, the connecting thread is directed toward one end where the anchor head is set, and the directions of the force transfer cylinders in the reserved holes corresponding to the force transfer anchor and the load-bearing anchor are opposite.

[0019] The beneficial effects of the present invention are:

[0020] 1) Compared with the prior art, the present invention increases the fixing strength between the anchor cable anchor end and the shear wall by arranging a force transfer cylinder with a force transfer key between the multiple layers of shear steel plates, so that the force transmission between the anchor cable and the shear wall is more uniform, the mechanical properties of the internal materials are fully utilized, and the force transmission structure is prevented from being damaged by concentrated stress.

[0021] 2) In the present invention, several segments of the force transmission cylinder are connected by connecting threads, and the force transmission cylinder segments can be inserted into the reserved holes of the shear steel plate layer by layer and then rotated and fixed. The installation process is simple and the structure is firm; the anchor head is inserted into one end of the force transmission cylinder through the spherical end, which can evenly transmit the anchor tension to the force transmission cylinder, further exerting the bearing performance of the shear wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the embedded force-transmitting anchor wall of the suspension bridge;

[0023] Figure 2 This is a schematic diagram of the internal structure of the embedded force-transmitting anchor wall of the suspension bridge;

[0024] Figure 3 for Figure 2 The internal structure and detailed drawing of the middle shear wall after cutting along AA;

[0025] Figure 4 is the schematic diagram of the anchor shear plate;

[0026] Figure 5 This is a schematic diagram of the position of the anchor cable and the force transmission cylinder;

[0027] Figure 6 It is the schematic diagram of the anchor head structure;

[0028] Figure 7 This is a schematic diagram of the force transmission cylinder after connection;

[0029] Figure 8 It is a schematic diagram of the connection mode of the force transmission cylinder;

[0030] Fig. 9 It is a schematic diagram of the internal structure after the force transmission cylinder is connected;

[0031] Fig.10 Schematic diagram of the internal structure of the anchor head.

[0032] Explanation of the accompanying reference numerals: shear wall 1, steel cage 2, shear steel plate 3, force transmission anchor cable 4, load-bearing anchor cable 5, anchor head 6, force transmission cylinder 7, force transmission key 8, connecting thread 9, concrete 10. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with embodiments. The description of the following embodiments is only used to help understand the present invention. It should be noted that for ordinary persons in the art, without departing from the principle of the present invention, the present invention can also be modified in some ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0034] Embodiment 1

[0035] As an example, Figures 1 to 10 As shown, a suspension bridge embedded force transmission anchor wall structure comprises: a shear wall 1, an anchor cable anchor head 6, a force transmission cylinder 7 and an anchor cable.

[0036] like Figure 2 and Fig. 9As shown, the shear wall 1 includes a steel cage 2 and shear steel plates 3, several layers of shear steel plates 3 are clamped in the steel cage 2, several segments of the force transmission cylinder 7 are connected in sequence by connecting threads 9 and penetrate the several layers of shear steel plates 3, and reserved holes are opened on the shear steel plates 3 for the force transmission cylinder 7 to pass through, and the reserved holes are opened in the gap of the steel cage 2.

[0037] like Figure 3 , Figure 5 and Figure 7 As shown, the force transfer cylinder 7 is provided with a force transfer key 8 between every two layers of shear steel plates 3, and the size of the reserved hole is smaller than the size of the force transfer key 8, so that the force transfer key 8 is stuck between two adjacent layers of shear steel plates 3. The anchor cable pulling force is evenly transmitted to the inside of the shear wall 1 through the multiple layers of force transfer keys 8, so that the bearing performance of the shear wall 1 is fully exerted.

[0038] like Figure 8 and Fig. 9 As shown, in this embodiment, the force transfer cylinder 7 is divided into three sections, and the upper, middle and lower sections are connected in sequence by connecting threads 9. The force transfer cylinder 7, the steel cage 2 and the shear steel plate 3 are all cast in the concrete 10 of the shear wall 1, and the force transfer cylinder 7 extends outward to the surface of the shear wall 1 and directly contacts the anchor head 6.

[0039] like Figure 3 , Figure 6 and Fig.10 As shown, the anchor cable passes through the shear wall 1 through the force transmission cylinder 7 and is anchored through the anchor head 6; the anchor cable anchor head 6 and the force transmission cylinder 7 are both provided with channels for the anchor cable to pass through.

[0040] One end of the three sections of the force transmission cylinder 7 connected in sequence and connected to the anchor head 6 is provided with an inner concave thread, and one end of the other sections is provided with a connecting thread 9 and the other end is provided with an inner concave thread.

[0041] Embodiment 2

[0042] As another embodiment, this embodiment 2 proposes a more specific embedded force transmission anchor wall structure of a suspension bridge based on the embodiment 1, wherein one end of the anchor head 6 is inserted into the force transmission cylinder 7 and the other end extends out of the surface of the shear wall 1.

[0043] Specifically, the end of the anchor head 6 inserted into the force transmission cylinder 7 is spherical, and a corresponding spherical concave structure is provided on the inner side of one end of the force transmission cylinder 7 connected to the anchor head 6 in several force transmission cylinder 7 segments connected in sequence. The spherical protrusion of the anchor head 6 is inserted into the force transmission cylinder 7, so that the force transmission cylinder 7 is subjected to more uniform force.

[0044] The anchor cables include a force transmission anchor cable 4 and a force bearing anchor cable 5 , and the force transmission anchor cable 4 and the force bearing anchor cable 5 are anchored on both sides of the shear wall 1 respectively.

[0045] The force transmission anchor cables 4 and the load bearing anchor cables 5 are respectively arranged in hexagonal circles on the shear wall 1, and the hexagonal circles formed by the force transmission anchor cables 4 and the load bearing anchor cables 5 are alternately distributed from the center of the shear wall 1 to the outside, one circle of force transmission anchor cables 4, one circle of load bearing anchor cables 5, and so on until all the reserved holes are covered, so that the shear wall 1 is evenly stressed.

[0046] The ends of the force transmission anchor cables 4 away from the shear wall 1 converge at one point, and the ends of the force bearing anchor cables 5 away from the shear wall 1 diverge from each other.

[0047] It should be noted that the parts in this embodiment that are the same or similar to those in the first embodiment can be referenced to each other and will not be described in detail in this application.

[0048] Embodiment 3

[0049] As another embodiment, this embodiment 3, based on the first and second embodiments, proposes a construction method for the embedded force transmission anchor wall structure of the suspension bridge, including the following steps:

[0050] Step 1. Open a reserved hole on the shear steel plate 3 according to the designed position of the anchor cable, tie the steel cage 2 of the shear wall 1, and simultaneously insert the segments of the force transfer cylinder 7 into the reserved hole of the shear steel plate 3 and connect them until the production of the steel cage 2 is completed; set the direction of inserting the force transfer cylinder 7 according to the anchor cable type corresponding to the reserved hole, and the connecting thread 9 faces the end where the anchor head 6 is set, and the directions of the force transfer cylinder 7 in the reserved holes corresponding to the force transfer anchor cable 4 and the load-bearing anchor cable 5 are opposite.

[0051] Step 2: Pass the force transmission anchor cable 4 and the force bearing anchor cable 5 through the force transmission cylinder 7 from two different directions and fix them on the anchor head 6;

[0052] Step 3: pour concrete 10 on the shear wall 1, and pour the force transfer cylinder 7, the steel cage 2 and the shear steel plate 3 into one body to prevent the internal steel from rusting. After the curing is completed, a force transfer wall structure is formed.

[0053] Embodiment 4

[0054] As another embodiment, this embodiment 4 proposes a more specific construction method of the embedded force transmission anchor wall structure of the suspension bridge on the basis of the embodiment 3.

[0055] In step one, the shear steel plates 3 are installed in layers. After installing one layer of shear steel plates 3, the force transfer cylinder 7 segments are inserted into the reserved holes, and then the next layer of shear steel plates 3 is set, so that the force transfer keys 8 on the installed force transfer cylinder 7 segments are stuck between the two adjacent layers of shear steel plates 3, and then the next force transfer cylinder 7 segment is inserted, and the adjacent segments of the force transfer cylinder 7 are rotated so that the connecting thread 9 is screwed into the inner concave thread to complete the fixed connection.

[0056] Repeat the above steps until a complete force transmission cylinder 7 is finally assembled, then install the outermost shear steel plate 3, and then install the anchor head 6.

[0057] It should be noted that the parts in this embodiment that are the same or similar to those in Embodiment 3 can be referenced to each other and will not be described in detail in this application.

[0058] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

Claims

1. An embedded force transmission anchor wall structure of a suspension bridge, characterized in that: include: A shear wall (1), an anchor cable anchor head (6), a force transmission cylinder (7) and an anchor cable, wherein the shear wall (1) comprises a steel cage (2) and a shear steel plate (3), wherein several layers of shear steel plates (3) are sandwiched in the steel cage (2), the force transmission cylinder (7) comprises several segments, and adjacent segments are sequentially connected by connecting threads (9) and penetrate the several layers of shear steel plates (3), and each segment of the force transmission cylinder (7) is provided with a force transmission key (8), and the force transmission key (8) is located between two adjacent layers of shear steel plates (3); the force transmission cylinder (7), the steel cage (2) and the shear steel plate (3) are all cast in concrete (10) of the shear wall (1); the anchor cable penetrates the shear wall (1) through the force transmission cylinder (7) and is anchored through the anchor head (6); The anchor cables comprise a force-transmitting anchor cable (4) and a force-bearing anchor cable (5), and the force-transmitting anchor cable (4) and the force-bearing anchor cable (5) are respectively anchored on both sides of the shear wall (1).

2. The embedded force transmission anchor wall structure of a suspension bridge according to claim 1, characterized in that: One end of the anchor head (6) is inserted into the force transmission cylinder (7), and the other end extends out of the surface of the shear wall (1). The end of the anchor head (6) inserted into the force transmission cylinder (7) is spherical. The anchor head (6) and the force transmission cylinder (7) are both provided with holes for the anchor cable to pass through.

3. The embedded force transmission anchor wall structure of a suspension bridge according to claim 2, characterized in that: Among the several force transmission cylinder (7) segments connected in sequence, one end of the force transmission cylinder (7) segment connected to the anchor head (6) is provided with a corresponding spherical concave structure on the inner side, and the other end is provided with a concave thread, and the other end of the other force transmission cylinder (7) segments is provided with a connecting thread (9) at one end, and a concave thread at the other end.

4. The embedded force transmission anchor wall structure of a suspension bridge according to claim 1, characterized in that: The force transmission anchor cables (4) and the load bearing anchor cables (5) are respectively arranged in hexagonal circles on the shear wall (1), and the hexagonal circles formed by the force transmission anchor cables (4) and the load bearing anchor cables (5) are alternately distributed from the center of the shear wall (1) to the outside.

5. The embedded force transmission anchor wall structure of a suspension bridge according to claim 1, characterized in that: The ends of the force-transmitting anchor cables (4) that are away from the shear wall (1) converge at one point, and the ends of the force-bearing anchor cables (5) that are away from the shear wall (1) diverge from each other.

6. The embedded force transmission anchor wall structure of a suspension bridge according to claim 1, characterized in that: A reserved hole for the force transmission cylinder (7) to pass through is provided on the shear steel plate (3); the size of the reserved hole is smaller than the size of the force transmission key (8), and the reserved hole is provided in the gap of the steel cage (2).

7. The construction method of the embedded force transmission anchor wall structure of a suspension bridge according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: a reserved hole is opened on the shear steel plate (3) according to the designed position of the anchor cable, the steel cage (2) of the shear wall (1) is tied, and the segments of the force transmission cylinder (7) are simultaneously inserted into the reserved hole of the shear steel plate (3) and connected until the steel cage (2) is completed; Step 2: Pass the force transmission anchor cable (4) and the force bearing anchor cable (5) through the force transmission cylinder (7) respectively and fix them on the anchor head (6); Step 3: pouring concrete (10) on the shear wall (1), and pouring the force transfer cylinder (7), the steel cage (2) and the shear steel plate (3) into one body to form a force transfer wall structure.

8. The construction method of the embedded force transmission anchor wall structure of a suspension bridge according to claim 7 is characterized in that: In step one, the shear steel plates (3) are installed in layers, and after one layer of shear steel plates (3) is installed, the force transmission cylinder (7) is segmented and inserted into the reserved hole, and then the next layer of shear steel plates (3) is arranged and the force transmission cylinder (7) is segmented and inserted, and the adjacent segments of the force transmission cylinder (7) are fixedly connected by connecting threads (9).

9. The construction method of the embedded force transmission anchor wall structure of a suspension bridge according to claim 7, characterized in that: In step one, the direction of inserting the force transmission cylinder (7) is set according to the type of anchor cable corresponding to the reserved hole, the connecting thread (9) is directed toward the end where the anchor head (6) is set, and the directions of the force transmission cylinder (7) in the reserved holes corresponding to the force transmission anchor cable (4) and the load-bearing anchor cable (5) are opposite.

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