Construction structure for stabilizing large-angle inclined pier column

Abstract

The utility model provides a construction structure used for stabilizing a large-angle inclined pier column, which comprises four fixed anchors, a winch anchor, a plurality of winch anchors, a plurality of winch anchors, a plurality of winch anchors, a plurality of winch anchors, a plurality of winch anchors, a plurality of winch anchors, a plurality of winch anchors and a plurality of winch anchors, and is characterized in that the four fixed anchors are arranged at four symmetrical positions of the inclined pier column; the closed ring steel wire ropes comprise a first closed ring steel wire rope and second closed ring steel wire ropes, the first closed ring steel wire rope is arranged at the bottom of the inclined pier column, and multiple layers of second closed ring steel wire ropes are sequentially arranged at the top end of the inclined pier column from top to bottom; the inhaul cable comprises an inclined inhaul cable and a horizontal inhaul cable, the horizontal inhaul cable is connected with the first closed ring steel wire rope and the fixed anchorage through a first pulley block, and the inclined inhaul cable is connected with the second closed ring steel wire rope and the fixed anchorage through a second pulley block. When the structure is used, the horizontal cable stabilizes the bottom of the pier column, and the inclined stay cable stabilizes the top of the pier, so that the pier column does not continuously incline and does not topple over, and favorable conditions are created for safely dismantling the pier column in the next stage.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering construction, in particular to a construction structure for stabilizing a pier column inclined at a large angle. Background Art

[0002] During the construction process, due to the unbalanced soil stacking near the piers and the bridge foundation being on a soft foundation, the unbalanced soil stacking caused the pile foundation to be displaced horizontally and vertically, resulting in the shearing and damage of the pile foundation, etc., and the bridge piers tilted at a large angle. Due to the constraints of the upper bridge deck, the bridge was in a balanced state, but this critical state was risky and could collapse at any time. In order to prevent the piers from continuing to tilt at a large angle and causing them to collapse, a structure was needed to balance the tilting force of the piers, so as to avoid greater damage and other safety accidents caused by the collapse of the piers, and to avoid greater economic losses. Utility Model Content

[0003] In view of this, the problem to be solved by the utility model is to provide a construction structure for stabilizing piers inclined at large angles. Horizontal cables of the structure are used to stabilize the bottom of the pier, and inclined cable-stayed cables are used to stabilize the top of the pier, so that the pier no longer continues to tilt and will not fall over, creating favorable conditions for the safe removal of the pier in the next stage.

[0004] The utility model solves the above technical problems through the following technical means: The utility model provides a construction structure for stabilizing a large-angle inclined pier, comprising:

[0005] Fixed anchors: There are four fixed anchors, which are arranged at four symmetrical positions of the inclined pier. A winch anchor is also arranged near each fixed anchor position, and a winch is arranged on the winch anchor;

[0006] Closed loop steel wire rope: The closed loop steel wire rope includes a first closed loop steel wire rope and a second closed loop steel wire rope. The bottom of the inclined pier is provided with the first closed loop steel wire rope, and the top of the inclined pier is provided with multiple layers of second closed loop steel wire rope from top to bottom. The top of the inclined pier is provided with multiple circles of holes, and steel rods are provided in the holes. A second closed loop steel wire rope is provided above each circle of steel rods.

[0007] Cable: The cable includes an inclined cable and a horizontal cable. The horizontal cable is connected to the first closed loop wire rope and the fixed anchor through a first pulley block, and the inclined cable is connected to the second closed loop and the fixed anchor through a second pulley block.

[0008] Furthermore, the horizontal cables and the inclined cables are respectively provided with tension sensors and displacement sensors.

[0009] Furthermore, the second closed loop steel wire rope is provided with four anchor heads corresponding to four fixed anchors respectively, each anchor head on the second closed loop steel wire rope is connected to an inclined cable, the first closed loop steel wire rope is provided with four anchor heads corresponding to four anchors respectively, and each anchor head on the first closed loop steel wire rope is connected to a horizontal cable.

[0010] Furthermore, the second closed loop steel wire rope is provided with four layers, the second pulley group on the inclined cable is connected to the second closed loop steel wire rope in layers to form four pulley groups, and the live ends of the steel wire ropes of the inclined cable are all arranged at one end of the fixed anchor and are respectively connected to the winch.

[0011] Furthermore, a hand winch is arranged on the movable end of the steel wire rope of the inclined cable in parallel with the winch, and the tightening and loosening zipper length of the hand winch is not less than 20 meters.

[0012] Furthermore, each second pulley block is composed of three pulleys, and the inclined cable connected to each fixed anchor is composed of eight second pulley blocks and connecting steel wire ropes to form an inclined cable in one direction.

[0013] Furthermore, the fixed anchor is composed of eight steel pipe piles, and a steel cage is arranged inside the steel pipe column and poured with C30 concrete. A reinforced concrete pedestal is arranged on the pile head of the fixed anchor, and a steering device is embedded in the reinforced concrete pedestal.

[0014] It can be seen from the above technical scheme that the beneficial effects of the utility model are as follows: the utility model provides a construction structure for stabilizing a large-angle inclined pier, comprising: a fixed anchor: four fixed anchors are provided, and the four fixed anchors are provided at four symmetrical positions of the inclined pier, and a winch anchor is also provided near each fixed anchor position, and a winch is provided on the winch anchor; a closed loop wire rope: the closed loop wire rope includes a first closed loop wire rope and a second closed loop wire rope, and the inclined pier The bottom is provided with a first closed loop steel wire rope, and the top of the inclined pier is provided with multiple layers of second closed loop steel wire rope from top to bottom in sequence. The top of the inclined pier is provided with multiple circles of holes, and steel rods are provided in the holes. A second closed loop steel wire rope is provided above each circle of steel rods. Cables: The cables include inclined cables and horizontal cables. The horizontal cables are connected to the first closed loop steel wire rope and the fixed anchor through the first pulley block, and the inclined cables are connected to the second closed loop and the fixed anchor through the second pulley block. The horizontal cables of this structure are used to stabilize the bottom of the pier, and the inclined inclined cables are used to stabilize the top of the pier, so that the pier will no longer continue to tilt and will not fall, creating favorable conditions for the safe removal of the pier in the next stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0016] Figure 1 A side view of a construction structure for stabilizing a pier column inclined at a large angle provided by the utility model;

[0017] Figure 2 A plan view of the construction of a stay cable for stabilizing a construction structure of a pier column inclined at a large angle provided by the utility model;

[0018] Figure 3 for Figure 2 A partial enlarged view of the fixed anchor position;

[0019] Figure 4 The diagram of the pulley assembly for the inclined cable;

[0020] Reference numerals:

[0021] 1-fixed anchor; 21-first closed loop steel wire rope; 22-second closed loop steel wire rope; 31-horizontal cable; 32-inclined cable; 321-second pulley block; 33-steel rod; 4-winch anchor; 41-winch; 5-hand hoist; 6-inclined bridge pier. DETAILED DESCRIPTION

[0022] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0023] See also Figures 1 to 4 The utility model provides a construction structure for stabilizing a large-angle inclined pier, comprising:

[0024] Fixed anchors: There are four fixed anchors, which are arranged at four symmetrical positions of the inclined pier. A winch anchor is also arranged near each fixed anchor position, and a winch is arranged on the winch anchor;

[0025] Closed loop steel wire rope: The closed loop steel wire rope includes a first closed loop steel wire rope and a second closed loop steel wire rope. The bottom of the inclined pier is provided with the first closed loop steel wire rope, and the top of the inclined pier is provided with multiple layers of second closed loop steel wire rope from top to bottom. The top of the inclined pier is provided with multiple circles of holes, and steel rods are provided in the holes. A second closed loop steel wire rope is provided above each circle of steel rods.

[0026] Cables: The cables include inclined cables and horizontal cables. The horizontal cables are connected to the first closed loop steel wire rope and the fixed anchor through the first pulley block, and the inclined cables are connected to the second closed loop and the fixed anchor through the second pulley block. The inclined bridge piers are stabilized by pulling the cables by setting fixed anchors. The closed loop steel wire rope is set on the inclined bridge piers so that the cables can be evenly stressed. The inclined bridge piers are stabilized by the four inclined cables above and the four horizontal cables, so that the bridge piers will no longer tilt and will not fall, creating favorable conditions for the safe removal of the piers in the next stage.

[0027] As a further improvement to the above technical solution, the horizontal cable and the inclined cable are respectively provided with a tension sensor and a displacement sensor, which can monitor the stress and displacement of the cable in real time and adjust the tension in real time.

[0028] As a further improvement of the above technical solution, the second closed loop steel wire rope is provided with four anchor heads corresponding to four fixed anchors respectively, and each anchor head on the second closed loop steel wire rope is connected to an inclined cable; the first closed loop steel wire rope is provided with four anchor heads corresponding to four anchors respectively, and each anchor head on the first closed loop steel wire rope is connected to a horizontal cable.

[0029] As a further improvement to the above technical solution, the second closed-loop steel wire rope is provided with four layers, and the second pulley group on the inclined cable is connected to the second closed-loop steel wire rope in layers to form four pulley groups, and the wire rope live ends of the inclined cable are all arranged at one end of the fixed anchor and are respectively connected to the winch. Each second pulley group is composed of three pulleys, and the inclined cable connected to each fixed anchor is composed of eight second pulley groups and connecting steel wire ropes to form an inclined cable in one direction. As shown in the figure, in each direction, four groups of 80-ton / 3-door pulley groups are formed by four pulley groups on the four-layer second closed-loop steel wire rope and the corresponding pulley groups arranged on the fixed anchor. The four layers of inclined cables are connected in series into a steel wire rope tightening method by using the second pulley group.

[0030] As a further improvement to the above technical solution, a hand winch is also arranged on the active end of the wire rope of the inclined cable in parallel with the winch, and the tightening and loosening zipper length of the hand winch is not less than 20 meters. A hand winch is arranged, and after the pre-tightening force is reached on the inclined cable when passing through the winch, the hand winch is used to tighten and loosen it, so that it can be precisely controlled. The hand winch and the winch are arranged in parallel, and the winch is pre-tightened and then precisely tightened or loosened by the hand winch. When in use, the hand winch is completely loosened when the winch is used for pre-tightening, and the hand winch is tightened after the pre-tightening force is reached through the cigarette machine.

[0031] As a further improvement of the above technical solution, the fixed anchor is composed of eight steel pipe piles, and a steel cage is arranged in the steel pipe column and poured with C30 concrete. A reinforced concrete cap is arranged on the pile head of the fixed anchor, and a steering device is embedded in the reinforced concrete cap. The four anchors are numbered A, B, C, and D. Each anchor is composed of 8 steel pipe piles φ1200×12mm, and a single steel pipe pile is 27.95m long. A steel cage is arranged and poured with C30 concrete. The top of the pile is connected and fixed with steel (I28 I-beam + [16 channel steel). In order to improve the overall stability and tensile performance of the anchor, a reinforced concrete cap is added 2m from the pile head, and the corresponding steering device is embedded.

[0032] First, arrange the pile foundations and pedestals at the four corner points according to the positions of the inclined piers to form fixed anchors, set winch anchors at the corresponding positions, fix the winches on the winch anchors, and then arrange horizontal cables at the four corner points. After the horizontal cables are arranged first but are not subject to stress, arrange the first closed loop steel wire rope at the bottom of the inclined pier, connect the pulley blocks of the horizontal cables at the four angles to the first closed loop steel wire rope, thread and wind the steel wire rope, and connect the two movable ends of the steel wire rope to the winch respectively. Four layers of holes are set from top to bottom at the top of the inclined pier, and steel rods are installed in the holes. Then, a second closed-loop steel wire rope is set above each layer of steel rods to facilitate the vertical sliding of the second closed-loop steel wire rope. The pulley blocks of the inclined cables are installed on the four layers of second closed-loop steel wire ropes and fixed anchors respectively, and then the steel wire ropes are threaded to form four groups of three-door pulley blocks. After all the horizontal cables and inclined cables in four directions are arranged, the winch is used to pre-tighten the horizontal cables in four directions, and then the inclined cables in four directions are pre-tightened by the winch. At the same time, the tension sensor and displacement sensor are used to monitor the stress of the horizontal cables and inclined cables and the displacement distance of the corner position of the inclined pier in real time. After the horizontal cables and inclined cables have reached the preset pre-tightening force; the winch of the fast ropes in all directions is replaced with a 10t hand winch. The length of the zipper for tightening and loosening the hand winch is at least 20m to prevent the operators from escaping from the dangerous area of ​​the collapse as soon as possible when the pier collapses. The hand winch is tightened by workers slowly dragging. The four corner points ABCD of the horizontal cable and the four anchor points ABCD of the inclined cable are subjected to forces that are calculated to be 120t-140t for the horizontal cable and 72t for the inclined cable, and can be stopped. Adjustments can be made based on the displacement at the other four points.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. 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 utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A construction structure for stabilizing a large-angle inclined pier, characterized in that: include Fixed anchors: There are four fixed anchors, which are arranged at four symmetrical positions of the inclined pier. A winch anchor is also arranged near each fixed anchor position, and a winch is arranged on the winch anchor; Closed loop steel wire rope: The closed loop steel wire rope includes a first closed loop steel wire rope and a second closed loop steel wire rope. The bottom of the inclined pier is provided with the first closed loop steel wire rope, and the top of the inclined pier is provided with multiple layers of second closed loop steel wire rope from top to bottom. The top of the inclined pier is provided with multiple circles of holes, and steel rods are provided in the holes. A second closed loop steel wire rope is provided above each circle of steel rods. Cable: The cable includes an inclined cable and a horizontal cable. The horizontal cable is connected to the first closed loop wire rope and the fixed anchor through a first pulley block, and the inclined cable is connected to the second closed loop and the fixed anchor through a second pulley block.

2. A construction structure for stabilizing a large-angle inclined pier according to claim 1, characterized in that: The horizontal cables and the inclined cables are respectively provided with tension sensors and displacement sensors.

3. A construction structure for stabilizing a large-angle inclined pier according to claim 1, characterized in that: The second closed loop steel wire rope is provided with four anchor heads corresponding to four fixed anchors respectively, and each anchor head on the second closed loop steel wire rope is connected to an inclined cable. The first closed loop steel wire rope is provided with four anchor heads corresponding to four anchors respectively, and each anchor head on the first closed loop steel wire rope is connected to a horizontal cable.

4. A construction structure for stabilizing a large-angle inclined pier according to claim 3, characterized in that: The second closed loop steel wire rope is provided with four layers, and the second pulley group on the inclined cable is connected to the second closed loop steel wire rope in layers to form four pulley groups, and the live ends of the steel wire ropes of the inclined cable are all arranged at one end of the fixed anchor and are respectively connected to the winch.

5. A construction structure for stabilizing a large-angle inclined pier according to claim 4, characterized in that: A hand chain hoist is also arranged on the movable end of the steel wire rope of the inclined cable in parallel with the winch, and the tightening and loosening zipper length of the hand chain hoist is not less than 20 meters.

6. A construction structure for stabilizing a large-angle inclined pier according to claim 5, characterized in that: Each second pulley block is composed of three pulleys, and the inclined cable connected to each fixed anchor is composed of eight second pulley blocks and connecting steel wire ropes to form an inclined cable in one direction.

7. The construction structure for stabilizing a large-angle inclined pier according to claim 1, characterized in that: The fixed anchor is composed of eight steel pipe piles, and a steel cage is arranged inside the steel pipe column and poured with C30 concrete. A reinforced concrete cap is arranged on the pile head of the fixed anchor, and a steering device is embedded in the reinforced concrete cap.

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