Back cable anchor box of through arch bridge weak pier arch rib self-balancing buckling system

Abstract

The utility model discloses a back cable anchor box of a through arch bridge weak bridge pier arch rib self-balancing buckling system, which comprises two pull plates arranged in parallel, the head ends of the two pull plates are provided with pin shaft through holes, the tail parts of the two pull plates are fixedly connected together through a bottom plate and an anchor backing plate which are arranged in parallel and at intervals, and the back cable anchor box is arranged on the back cable anchor box. A plurality of back cable penetrating holes corresponding to each other in position are densely distributed in the bottom plate and the anchor bearing plate. The back cable anchor box comprises the pulling plate, the pin shaft penetrating hole, the bottom plate, the anchor bearing plate, the back cable penetrating hole, the reinforcing plate and the stiffening rib, the pulling plate stretches into the ejector rod, the pin shaft penetrates through the pin shaft penetrating hole, then the ejector rod and the back cable anchor box can be connected, and the back cable can be anchored after the back cable penetrates through the back cable penetrating hole in the bottom plate and the back cable penetrating hole in the anchor bearing plate. Through the structure, the back cable and the ejector rod can be connected, so that the structural stability of the whole through arch bridge weak pier arch rib self-balancing buckling and hanging system is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a back cable anchor box of weak pier arch rib self-balancing hanging system of through arch bridge belongs to bridge structure technical field. BACKGROUND

[0002] When the area (such as water source, or the historical relic protection zone below, or the navigation channel below) crossed by the through arch bridge cannot be supported by the support to push the arch in the construction process, the tower structure needs to be set, and the arch rib segment is stabilized by the hanging system connected with the tower structure, and the back cable is also needed to be set to ensure the verticality of the tower structure, the upper end of the back cable is anchored on the tower, and the lower end is anchored on the anchor. When the bridge is built in the mountainous area, the lower end of the back cable can be anchored on the rock body by the anchor cable structure, and when the bridge is built in the plain area, the gravity type anchor stock can only be made on the ground of the approach bridge side, so that the back cable is fixed. However, when the ground of the approach bridge side is a soft foundation structure (such as silt soil), and the adjacent bridge site is a large area of farmland, temporary gravity type anchor stock needs to be made, which not only increases the engineering quantity, but also causes a large amount of damage to the farmland.

[0003] For this situation, a new solution is proposed, that is, a top rod is fixedly arranged on the approach bridge, and the back cable is fixed on the top rod. The whole process can avoid damage to the land on the approach bridge side. The whole structure is fixed and connected between the back cable and the top rod. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a back cable anchor box of weak pier arch rib self-balancing hanging system of through arch bridge. The back cable anchor box can anchor the back cable, and the back cable anchor box can also be connected with the top rod, so as to realize the connection and fixation of the back cable and the top rod.

[0005] The utility model discloses a back cable anchor box of weak pier arch rib self-balancing hanging system of through arch bridge, which comprises two parallelly arranged pull plates, the head end of the two pull plates is provided with a pin shaft perforation, the tail part of the two pull plates is fixedly connected together through parallel and interval arranged bottom plates and anchor pads, and the bottom plates and anchor pads are densely provided with a plurality of back cable through holes corresponding in position.

[0006] In the foregoing back cable anchor box of weak pier arch rib self-balancing hanging system of through arch bridge, the head end inner wall of the two pull plates is provided with a reinforcing plate, and the pin shaft perforation passes through the reinforcing plate.

[0007] In the back cable anchor box of the weak pier arch rib self-balancing hanging system of the through arch bridge, a plurality of stiffening ribs parallel to each other are arranged between the bottom plate and the anchor pad plate, and a row of back cable through holes are arranged on the bottom plate and the anchor pad plate between the adjacent two stiffening ribs.

[0008] In the back cable anchor box of the weak pier arch rib self-balancing hanging system of the through arch bridge, the head end of the pull plate is in a circular structure.

[0009] Compared with the prior art, the utility model discloses a pull plate, a pin shaft through hole, a bottom plate, an anchor pad plate, a back cable through hole, a reinforcing plate and a stiffening rib, the pull plate is stretched into the top rod and can realize the connection of the top rod and the back cable anchor box after passing through the pin shaft through hole, and the back cable can be anchored after passing through the back cable through hole on the bottom plate and the anchor pad plate, the connection of the back cable and the top rod can be realized through the structure, so that the structural stability of the weak pier arch rib self-balancing hanging system of the through arch bridge is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the structural schematic diagram of the utility model;

[0011] Figure 2 It is the structural schematic diagram of A--A of Figure 1 ;

[0012] Figure 3 It is the structural schematic diagram of B--B of Figure 2 ;

[0013] Figure 4 It is the structural schematic diagram when the utility model is connected with the top rod.

[0014] Fig. 1 is a pull plate, 2 is a pin shaft through hole, 3 is a bottom plate, 4 is an anchor pad plate, 5 is a back cable through hole, 6 is a reinforcing plate, 7 is a stiffening rib, 8 is a top rod, 9 is a back cable anchor box. DETAILED DESCRIPTION

[0015] The utility model will be further explained in connection with the drawings and examples, but it is not as the basis for limiting the utility model.

[0016] The utility model discloses an embodiment: a back cable anchor box of the weak pier arch rib self-balancing hanging system of the through arch bridge, including 2 parallelly arranged pull plate 1, the head end of 2 pull plate 1 is equipped with pin shaft through hole 2, and the tail portion between 2 pull plate 1 is fixedly connected together through parallelly arranged and intervally arranged bottom plate 3 and anchor pad plate 4, and the bottom plate 3 and the anchor pad plate 4 are all densely distributed with a plurality of back cable through holes 5 corresponding to each other in position.

[0017] In use, two pull plates 1 extend into the inside of the jacking rod 8 through two open grooves on the top of the jacking rod 8, then a pin shaft is inserted into the groove from the side of the jacking rod 8, the pin shaft passes through the pin shaft perforations 2 on the two pull plates 1 and extends out of the groove from the other end of the jacking rod 8, so that the connection between the back cable anchor box and the jacking rod 8 is realized, then the back cable is inserted into the back cable insertion hole 5 on the bottom plate 3 and the anchor pad 4, so that the back cable is anchored, and the connection between the back cable and the jacking rod 8 is realized through the structure, so as to ensure the structural stability of the self-balancing hanging system of the weak pier and arch rib of the through arch bridge.

[0018] The head end inner wall of the two pull plates 1 is provided with a reinforcing plate 6, and the pin shaft perforation 2 passes through the reinforcing plate 6, so as to strengthen the strength of the pull plate 1 and avoid the breakage of the pull plate 1 at the pin shaft perforation 2 under the pulling force of the back cable.

[0019] A plurality of parallel stiffening ribs 7 are arranged between the bottom plate 3 and the anchor pad 4, a row of back cable insertion holes 5 are arranged on the bottom plate 3 and the anchor pad 4 between the two adjacent stiffening ribs 7, the stiffening ribs 7 can support the bottom plate 3 and the anchor pad 4 to improve the strength and avoid the deformation of the bottom plate 3 and the anchor pad 4 under the pulling force of the back cable, and the two adjacent rows of back cables are separated to avoid entangling with each other.

[0020] The head end of the pull plate 1 is in a circular structure, which facilitates the insertion of the pull plate 1 into the inside of the jacking rod 8 through the opening on the top surface of the jacking rod 8.

Claims

1. A back cable anchor box of a self-balanced buckling system of a weak pier arch rib of a through arch bridge, characterized in that: The utility model relates to a kind of backstay of reinforced concrete, including 2 parallelly arranged pull plate (1), the head end of 2 pull plate (1) is equipped with pin shaft perforation (2), and the tail of 2 pull plate (1) is fixedly connected together between bottom plate (3) and anchor backing plate (4) by parallel and interval arrangement, and bottom plate (3) and anchor backing plate (4) are densely covered with multiple position corresponding back cable through hole (5).

2. The back cable anchorage box of the self-balanced and hung system of the arch rib of the weak pier of the through arch bridge according to claim 1, characterized in that: The head end of 2 pull plate (1) is equipped with reinforcing plate (6) on inner wall, and pin shaft perforation (2) passes through reinforcing plate (6).

3. The back cable anchorage box of the self-balanced and hung system of the arch rib of the weak pier of the through arch bridge according to claim 1, characterized in that: Bottom plate (3) and anchor backing plate (4) are provided with multiple parallel stiffening ribs (7) between, and bottom plate (3) and anchor backing plate (4) are provided with a row of back cable through hole (5) between the adjacent two stiffening ribs (7).

4. The back cable anchorage box of the self-balanced and hung system of the arch rib of the weak pier of the through arch bridge according to claim 1, characterized in that: The head end of the pull plate (1) is a circular structure.

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