Bridge abutment type anchorage system integrated structure

Abstract

The utility model discloses a bridge abutment type anchorage system integrated structure which comprises a bridge abutment, an anchorage and a pile foundation, the bridge abutment and the anchorage are arranged on the two sides of a river channel and used for bearing a bridge, the pile foundation is arranged on a river bank soil body, the anchorage is arranged in the bridge abutment, and the anchorage and the bridge abutment are integrally poured. The pile foundation is arranged at the bottom of the bridge abutment, fixed to the bridge abutment and used for bearing the bridge abutment. The small-span bridge adopting the bridge abutment type anchorage system has the effect of reducing the construction cost of the small-span bridge adopting the bridge abutment type anchorage system.

Description

Technical Field

[0001] The utility model relates to the field of bridge construction, in particular to an integrated structure of an abutment type anchoring system. Background Art

[0002] Abutments refer to the supporting structures on bridges, usually located at the ends of bridges or across valleys. Abutments bear the weight of the bridge itself and the gravity load, and also serve as the support of the bridge. Abutments are usually made of concrete or stone. Anchors usually refer to a device or process that firmly connects the main components of a bridge to the foundation or substructure. The function of an anchor device is to ensure the stability and safety of the bridge by transferring the forces and loads between the bridges or between the bridge and the foundation to the foundation or substructure.

[0003] In the abutment anchorage system, the anchorage device is generally set on the side of the abutment. The anchorage device is usually composed of one or more steel anchorage fixing seats, connectors, anchorage rods and anchorage heads. The anchorage fixing seats are fixed to the abutment by bolts or welding, and the connectors connect the anchorage head and the anchorage rod together. One end of the anchorage rod is connected to the anchorage head to transfer and disperse the load; the other end is connected to the suspension bridge superstructure to transfer the load to the suspension bridge superstructure.

[0004] Using the existing abutment anchor system to build a bridge over a narrow river requires building foundations and pile foundations for the anchors and abutments under the riverbank soil, which is costly. Therefore, there is still room for improvement. Utility Model Content

[0005] In order to reduce the construction cost of a small-span bridge using an abutment-type anchoring system, the present application provides an integrated structure of an abutment-type anchoring system.

[0006] The integrated structure of an abutment anchorage system provided in this application adopts the following technical solution:

[0007] An integrated structure of an abutment type anchoring system comprises abutments and anchors arranged on both sides of a river channel for supporting a bridge and pile foundations arranged in river bank soil, wherein the anchors are arranged in the abutments and are cast integrally with the abutments; the pile foundations are arranged at the bottom of the abutments and are fixed to the abutments for supporting the abutments.

[0008] By adopting the above technical solution, the anchor is set in the abutment, and the anchor and the abutment are cast integrally, so that the anchor and the abutment share a common pile foundation, reducing the need to build a separate pile foundation and foundation for the anchor, thereby reducing the work and cost of building the pile foundation and foundation for the anchor, which is beneficial to reducing the cost of building a small-span bridge using an abutment anchor system and improving the efficiency of building a small-span bridge using an abutment anchor system.

[0009] Preferably, the top of the abutment is provided with an end groove for placing the end of the bridge, the bottom of the end groove is provided with a hollow groove, and the anchor is fixed on the bottom wall of the hollow groove; the side wall of the hollow groove close to the river channel is provided with a rope hole for the load-bearing cables of the bridge to extend into the hollow groove, so that the anchor can fix the load-bearing cables of the bridge.

[0010] By adopting the above technical solution, the end of the bridge is placed in the end groove at the top of the abutment, and the anchor is set at the bottom of the bridge. The load-bearing cable of the bridge is extended into the hollow groove through the rope hole and fixed to the anchor, so that the load-bearing cable of the bridge supports the bridge from the bottom of the bridge, reducing the structure of the load-bearing cable for supporting the bridge set on the top of the abutment, and further reducing the cost of building a small-span bridge using an abutment anchor system. At the same time, the load-bearing cable is used to support the bridge, reducing the need to build a supporting column supporting the bridge at the bottom of the bridge, thereby reducing the need to build a flood discharge structure for the bridge, and further reducing the cost of building a small-span bridge using an abutment anchor system.

[0011] Preferably, the abutment is also provided with a saddle for supporting the load-bearing cables of the bridge, the saddle is arranged on the bottom wall of the rope hole, the saddle and the abutment are cast integrally, and the anchor is located on a straight line in the length direction of the saddle.

[0012] By adopting the above technical solution, the load on the load-bearing cables of the bridge is carried by the saddle and the load on the load-bearing cables of the bridge is dispersed to the abutment, reducing the load borne by the anchor, thereby reducing the situation where the load-bearing cables of the bridge are separated from the anchor due to the anchor bearing a load exceeding the upper limit. At the same time, the saddle and the abutment are cast as one, reducing the work of installing the saddle separately, which is conducive to improving the efficiency of building small-span bridges using abutment anchor systems. And the anchor is located on a straight line in the length direction of the saddle, reducing the load-bearing cables of the bridge from breaking the side walls of the saddle under the load of the bridge, protecting the side walls of the cast saddle, thereby reducing the situation where the side walls of the cast saddle are easily broken due to the lower stiffness of the saddle made of steel.

[0013] Preferably, the inner side wall of the hollow groove is provided with a fixing piece for clamping the load-bearing cables of the bridge.

[0014] By adopting the above technical solution, the load-bearing cables of the bridge are clamped by the fixings, so that the fixings prevent the load-bearing cables of the bridge from being separated from the anchor, which is conducive to increasing the upper limit of the load bearing of the anchor, thereby increasing the upper limit of the load bearing of the bridge. At the same time, the load-bearing cables of the bridge transmit the load to the fixings through the fixings, so that the abutment points share the load on the load-bearing cables of the bridge, reducing the number of points on the abutment bearing the load, which leads to the situation that the points on the abutment bearing the load are easily damaged under long-term load.

[0015] Preferably, the side wall of the hollow groove provided with the rope hole is inclined from top to bottom, and the fixing part includes a positioning plate fixedly provided on the inclined side wall of the hollow groove and a fixing plate detachably connected to the positioning plate, and the positioning plate and the fixing plate are fixed with bolts and nuts, and the positioning plate and the fixing plate are both recessed with a slot for clamping the load-bearing cables of the bridge.

[0016] By adopting the above technical solution, when it is necessary to install the load-bearing cable of the bridge to the anchor, first place the load-bearing cable of the bridge in the slot of the cable saddle and the positioning plate, then fix the end of the load-bearing cable of the bridge to the anchor, and then use bolts and nuts to fix the fixing plate and the positioning plate and clamp the load-bearing cable of the bridge. The operation is simple and is conducive to improving the efficiency of building a small-span bridge using an abutment anchor system. At the same time, by setting the height of the positioning plate, the area where the load-bearing cable of the bridge and the cable saddle abut is adjusted, which is conducive to increasing the friction between the load-bearing cable of the bridge and the cable saddle by increasing the contact area between the load-bearing cable of the bridge and the cable saddle, and further increasing the upper limit of the load of the load-bearing cable of the bridge shared by the cable saddle.

[0017] Preferably, the side walls of the end grooves are provided with steel plates for welding to the ends of the bridge.

[0018] By adopting the above technical solution, the steel plate is welded to the end of the bridge, so that the end of the bridge is fixedly connected to the side wall of the end groove, which reduces the sliding of the bridge under load and is conducive to improving the stability of the bridge.

[0019] Preferably, a grouting hole is also provided on the top of the abutment, the grouting hole is connected to the end groove, and the grouting hole passes through the steel plate to allow slurry to flow into the end of the bridge and the gap between the end of the bridge and the side wall of the end groove.

[0020] By adopting the above technical solution, grouting holes are used to inject grout into the end of the bridge, and after the grouting solidifies, the end of the bridge is fixed to the side wall of the end groove, thereby fixing the bridge to the abutment, further improving the stability of the bridge. When there is a gap between the end of the bridge and the steel plate, it is difficult to weld the end of the steel plate bridge and the part far from the top surface of the abutment by electric welding, but grouting holes are used to inject grout into the gap between the end of the bridge and the side wall of the end groove to fill the gap, and after the grouting is fixed, the end of the bridge can be fixed to the side wall of the end groove, thereby further improving the stability of the bridge.

[0021] Preferably, the side wall of the hollow groove is also provided with an inspection opening.

[0022] By adopting the above technical solution, the anchor is set in the hollow groove, and the bridge is set above the hollow groove and covers the hollow groove, making the anchor difficult to observe, and the anchor and the saddle are easy to wear after long-term use, and need regular maintenance. By setting up an inspection port, maintenance personnel can enter the hollow groove to check the anchor, fixings, bridge load-bearing cables and anchors, which is convenient for maintenance personnel to find hidden dangers in advance and make corrections, reducing the situation where the bridge lacks maintenance after long-term use and is prone to accidents.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By setting the anchor in the abutment and casting the anchor and the abutment as one, the anchor and the abutment share a pile foundation, reducing the need to build the pile foundation and foundation of the anchor separately, thereby reducing the work and cost of building the pile foundation and foundation of the anchor, which is beneficial to reducing the cost of building a small-span bridge using an abutment anchor system and improving the efficiency of building a small-span bridge using an abutment anchor system.

[0025] 2. By setting cable saddles, rope holes, fixings, and casting the cable saddles and abutments as one, the load-bearing cables of the bridge support the bridge from the bottom of the bridge, reducing the number of structures for supporting the load-bearing cables on the top of the abutments, and reducing the number of supporting columns for supporting the bridge at the bottom of the bridge, further reducing the cost of building small-span bridges using abutment anchoring systems. At the same time, reducing the work of installing cable saddles separately is conducive to improving the efficiency of building small-span bridges using abutment anchoring systems; at the same time, the fixings increase the upper limit of the load of the load-bearing cables of the bridge shared by the cable saddles, which is conducive to protecting the cast cable saddles. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the internal structure of the bridge of the embodiment of the present application installed on an integrated structure of an abutment-type anchoring system.

[0027] Figure 2 yes Figure 2 Enlarged view of part A in the middle.

[0028] Figure 3 It is a schematic diagram of the overall structure of the abutment in the embodiment of the present application.

[0029] Figure 4 yes Figure 3 Enlarged view of part B in the middle.

[0030] Description of reference numerals:

[0031] 1. Abutment; 11. Pile foundation; 12. End groove; 121. Steel plate; 122. Through hole; 13. Hollow groove; 131. Inspection port; 14. Rope hole; 15. Grouting hole; 2. Cable saddle; 3. Anchor; 4. Fixing piece; 41. Positioning plate; 42. Fixing plate; 43. Fixing rod; 44. Slot; 5. Bridge; 51. Load-bearing cable. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The embodiment of the present application discloses an integrated structure of an abutment type anchoring system. Figure 1 as well as Figure 2 The integrated structure of the abutment anchorage system includes abutments 1 and anchorages 3 arranged on both sides of the river channel for supporting the bridge 5, a cable saddle 2 for supporting the load-bearing cable 51 of the bridge 5, and a pile foundation 11 arranged on the river bank soil. The abutment 1 is in the shape of a rectangular platform. There are two abutments 1. The two abutments 1 are located on both sides of the river channel and on the soil of the river bank. Four pile foundations 11 are fixed on the bottom side of each abutment 1. The four pile foundations 11 are respectively located at the four corners of the abutment 1, and the pile foundations 11 are buried in the soil of the river bank to support the abutment 1 and fix the abutment 1 on the river bank. An end groove 12 is recessed on the top side of the abutment 1. The end groove 12 is opened on one side close to the river bank, so as to place the two ends of the bridge 5 along the length direction in the end groove 12. A hollow groove 13 is also recessed on the bottom wall of the end groove 12, and the anchorage 3 is located on the bottom wall of the hollow groove 13. A rope hole 14 is also formed on the side wall of the hollow groove 13 close to the river channel, through which the load-bearing rope 51 of the bridge 5 extends. The rope saddle 2 is located on the bottom wall of the rope hole 14 .

[0034] Reference Figure 3 The end groove 12 is in the shape of a rectangular groove, and the width of the end groove 12 is slightly larger than the width of the bridge 5, so as to provide space for adjusting the end of the bridge 5 when the end of the bridge 5 is hoisted to the end groove 12. The side walls of the end groove 12 are all pre-buried with steel plates 121, which are in the shape of rectangular plates. The width direction of the steel plates 121 is consistent with the depth direction of the end groove 12, and the width of the steel plates 121 is greater than the depth of the end groove 12. The side of the steel plates 121 along the width direction and close to the top of the abutment 1 is flush with the top of the abutment 1, and the side of the steel plates 121 along the thickness direction and close to the hollow groove 13 is flush with the side wall of the end groove 12. The steel plate 121, whose length direction is consistent with the width direction of the end groove 12, is provided with two through holes 122, and the two through holes 122 are located at both ends of the steel plate 121, whose length direction is consistent with the width direction of the end groove 12.

[0035] Reference Figure 3A grouting hole 15 is also provided at the top of the abutment 1. In the present embodiment, there are two grouting holes 15, which are respectively located on both sides of the abutment 1 along the width direction. One end of the grouting hole 15 is located at the top of the abutment 1, and the other end is located on the side wall of the end groove 12 and is connected to the through hole 122 on the steel plate 121, so as to allow slurry to flow into the end of the bridge 5 and the gap between the end of the bridge 5 and the side wall of the end groove 12, thereby fixing the end of the bridge 5 to the abutment 1.

[0036] Reference Figure 3 In this embodiment, the hollow groove 13 is in a square groove shape, the top of the rope hole 14 is connected to the end groove 12, and the inner side wall of the hollow groove 13 having the rope hole 14 is provided with an inclined surface, which is inclined from the bottom of the rope hole 14 to the bottom of the hollow groove 13. A maintenance port 131 is provided on the side wall of the hollow groove 13 away from the inclined surface, so that maintenance personnel can enter the hollow groove 13.

[0037] Reference Figure 3 as well as Figure 4 The saddle 2 is cast on the bottom wall of the rope hole 14, so that the saddle 2 is cast integrally with the abutment 1. There are two saddles 2, which are located at both ends of the rope hole 14 along the length direction, and the length direction of the saddle 2 is consistent with the width direction of the abutment 1. The anchor 3 is cast on the bottom wall of the hollow groove 13, and there are two anchors 3, which are respectively located on the straight lines of the two saddles 2 along the length direction. The anchor 3 is inclined, and the inclination angle of the anchor 3 is consistent with the inclination angle of the inclined surface of the hollow groove 13, so that the anchor 3 is convenient for fixing the end of the load-bearing cable 51 of the bridge 5.

[0038] Reference Figure 3 as well as Figure 4 Four fixing rods 43 are fixed to the inclined surface of the hollow groove 13, two of which form a group, and the two groups of fixing rods 43 are respectively located between the two saddles 2 and the two anchors 3. The inner side wall of the hollow groove 13 is also fixed with a fixing member 4 for clamping the load-bearing cable 51 of the bridge 5. In this embodiment, the fixing member 4 includes a positioning plate 41 fixed to the fixing rod 43 and a fixing plate 42 detachably mounted on the positioning plate 41. There are two positioning plates 41, and the two positioning plates 41 are respectively fixed to the two groups of fixing rods 43, and the two ends of the positioning plate 41 along the length direction are respectively fixedly connected to the ends of the two fixing rods 43 of the same group away from the inclined surface.

[0039] Reference Figure 4 The positioning plate 41 is in the shape of a rectangular plate, and a groove 44 is recessed in the middle position of the positioning plate 41 along the length direction, and the middle position of the positioning plate 41 along the length direction is recessed toward the inclined surface in an arc shape, and the groove 44 is in a bad arc shape and the diameter of the groove 44 is consistent with the diameter of the load-bearing cable 51 of the bridge 5.

[0040] Reference Figure 4The fixing plate 42 is in the shape of a rectangular plate, and the length of the fixing plate 42 is consistent with the length of the positioning plate 41. The fixing plate 42 is recessed with a slot 44 in the middle position along the length direction, and the fixing plate 42 is recessed in the middle position along the length direction toward the inclined surface in an arc shape. The slots 44 of the positioning plate 41 and the fixing plate 42 are used to clamp the load-bearing cables 51 of the bridge 5.

[0041] Reference Figure 4 The positioning plate 41 and the fixing plate 42 are fixed with bolts and nuts, and the bolts and nuts fix the two sides of the slot 44 along the arc direction. When the positioning plate 41 and the fixing plate 42 are used to clamp the load-bearing cable 51 of the bridge 5, the load-bearing slot of the bridge 5 is located in the slot 44, and a gap is left between the positioning plate 41 and the fixing plate 42.

[0042] The implementation principle of the integrated structure of an abutment type anchoring system in the embodiment of the present application is:

[0043] When it is necessary to build the abutment 1, firstly, according to the drawings, the pile hole is excavated toward the river bank, and the steel cage of the pile foundation 11 is prefabricated. After the excavation of the pile hole is completed, the cyclone is used in combination with the positive circulation slurry replacement method, and the mud with drilling slag in the pile hole is replaced with high-quality mud to clean the hole; then the steel cage is hoisted into the pile hole, and then the pile foundation 11 is poured into the pile hole. After the pile foundation 11 solidifies, the foundation of the abutment 1 is excavated according to the drawings, and then the steel structure of the abutment 1, anchor 3 and cable saddle 2 and the template for pouring the abutment 1, anchor 3 and cable saddle 2 are built on the foundation, and then the abutment 1, anchor 3 and cable saddle 2 are poured in one piece.

[0044] When the bridge 5 needs to be installed on the abutment 1, the bridge 5 is first hoisted on the abutment 1, and the bearing cable 51 is connected to the bottom of the bridge 5. The bridge 5 is adjusted to have both ends placed in the end grooves 12 on both sides of the river channel. Then, the ends of the bridge 5 are welded to the steel plates 121 located on the side walls of the end grooves 12, and then grout is injected into the ends of the bridge 5 and the gap between the ends of the bridge 5 and the side walls of the end grooves 12 through the grouting holes 15 and the through holes 122. Then, the two ends of the bearing cable 51 of the bridge 5 are respectively extended into the rope holes 14 of the two abutments 1, and the bearing cable 51 of the bridge 5 is placed on the saddle 2 and in the slot 44 of the positioning plate 41; then, the fixing plate 42 covers the positioning plate 41, and the positioning plate 41 and the fixing plate 42 are fixed by bolts and nuts, and the bearing cable 51 of the bridge 5 is clamped. Then, the ends of the bearing cable 51 of the bridge 5 are fixed in the anchor 3.

[0045] By setting the anchor 3 in the abutment 1 and integrally casting the anchor 3, the cable saddle 2 and the abutment 1, the anchor 3 and the abutment 1 share the pile foundation 11, reducing the need to construct the pile foundation 11 and foundation of the anchor 3 separately, thereby reducing the work and cost of constructing the pile foundation 11 and foundation of the anchor 3, which is beneficial to reducing the cost of constructing a small-span bridge 5 using the abutment 1 type anchor 3 system and improving the efficiency of constructing a small-span bridge 5 using the abutment 1 type anchor 3 system. At the same time, reducing the work of installing the cable saddle 2 separately is beneficial to improving the efficiency of constructing a small-span bridge 5 using the abutment 1 type anchor 3 system.

[0046] By setting the anchor 3 below the bridge 5, the rope hole 14, and the fixing part 4, the load-bearing cable 51 of the bridge 5 supports the bridge 5 from the bottom of the bridge 5, reducing the structure for supporting the load-bearing cable 51 of the bridge 5 on the top of the abutment 1, and reducing the situation of building support columns to support the bridge 5 at the bottom of the bridge 5, further reducing the cost of building a small-span bridge 5 using the abutment 1 type anchor 3 system.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An integrated structure of an abutment type anchoring system, comprising abutments (1) and anchors (3) arranged on both sides of a river channel for supporting a bridge (5) and pile foundations (11) arranged on river bank soil, characterized in that: The anchor (3) is arranged in the abutment (1), and the anchor (3) and the abutment (1) are cast in one piece; the pile foundation (11) is arranged at the bottom of the abutment (1) and is fixed to the abutment (1) for supporting the abutment (1).

2. The abutment type anchorage system integrated structure according to claim 1, characterized in that: The top of the abutment (1) is provided with an end groove (12) for placing the end of the bridge (5), the bottom of the end groove (12) is provided with a hollow groove (13), and the anchor (3) is fixed on the bottom wall of the hollow groove (13); the side wall of the hollow groove (13) close to the river channel is provided with a rope hole (14) for allowing the load-bearing cable (51) of the bridge (5) to extend into the hollow groove (13), so as to allow the anchor (3) to fix the load-bearing cable (51) of the bridge (5).

3. The abutment type anchorage system integrated structure according to claim 2, characterized in that: The abutment (1) is also provided with a saddle (2) for supporting a load-bearing cable (51) of a bridge (5); the saddle (2) is arranged on the bottom wall of the rope hole (14); the saddle (2) and the abutment (1) are cast as one piece; and the anchor (3) is located on a straight line in the length direction of the saddle (2).

4. An integrated structure of an abutment type anchoring system according to any one of claims 2-3, characterized in that: The inner side wall of the hollow groove (13) is provided with a fixing member (4) for clamping the load-bearing cable (51) of the bridge (5).

5. The abutment type anchorage system integrated structure according to claim 4, characterized in that: The side wall of the hollow groove (13) provided with the rope hole (14) is inclined from top to bottom, and the fixing member (4) includes a positioning plate (41) fixedly arranged on the inclined side wall of the hollow groove (13) and a fixing plate (42) detachably connected to the positioning plate (41), the positioning plate (41) and the fixing plate (42) are fixed by bolts and nuts, and the positioning plate (41) and the fixing plate (42) are both recessed with a clamping groove (44) for clamping the load-bearing cable (51) of the bridge (5).

6. The abutment type anchorage system integrated structure according to claim 2, characterized in that: The side wall of the end groove (12) is provided with a steel plate (121) for welding to the end of the bridge (5).

7. The abutment type anchorage system integrated structure according to claim 6, characterized in that: The top of the abutment (1) is also provided with a grouting hole (15), the grouting hole (15) being connected to the end groove (12), and the grouting hole (15) penetrating the steel plate (121) for allowing slurry to flow into the end of the bridge (5) and into the gap between the end of the bridge (5) and the side wall of the end groove (12).

8. The abutment type anchorage system integrated structure according to claim 5, characterized in that: The side wall of the hollow groove (13) is also provided with an inspection opening (131).

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