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Active waterproof system for anchorage foundation enclosure structure of suspension bridge and construction method

A technology for enclosure structures and suspension bridges, which is applied in the direction of infrastructure engineering, buildings, sheet pile walls, etc., can solve problems such as poor operability, high power consumption, and easy corrosion of electricity, so as to achieve simple construction, ensure construction safety, and highly operable effect

Pending Publication Date: 2022-08-02
广西欣港交通投资有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method needs to be powered on all the time. If the power is cut off, water will seep into the foundation pit through the drill hole at the anode, which consumes a lot of power and the electrode is easy to corrode.
Moreover, for anchorage foundation pits, the side walls are mostly strong and moderately weathered rocks. For anchorage foundation pits with a depth of more than ten meters, it is difficult to drill holes on the side walls of the enclosure structure, and the operability is poor.

Method used

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  • Active waterproof system for anchorage foundation enclosure structure of suspension bridge and construction method
  • Active waterproof system for anchorage foundation enclosure structure of suspension bridge and construction method
  • Active waterproof system for anchorage foundation enclosure structure of suspension bridge and construction method

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Effect test

Embodiment 1

[0037] An active waterproofing system of an anchorage foundation enclosure structure of a suspension bridge is mainly composed of bored cast-in-place piles 1 , enclosure walls 2 , cathode dewatering wells 3 , wires 4 , and stabilized DC electroosmosis cabinets 5 .

[0038] The local steel bar 6 on the described bored pile 1 and the enclosure wall 2 is replaced by the steel bar anode 7 of the coating layer, which is used as an anode for electroosmosis and anti-seepage, which can avoid anode corrosion as much as possible; when the steel bar cage is processed, the coating layer is directly The steel anode 7 is welded on the steel cage. The outer part of the clad steel anode 7 is a stainless steel cladding 8, and the inner part is an inner cladding steel bar 9.

[0039] The prior art reinforcement cages use common steel bars; 1. When using electro-osmosis active waterproofing, a single cladding steel bar is used to replace the common steel bar at the position, and direct current i...

Embodiment 2

[0044] The construction method of the active waterproofing system of the anchorage foundation envelope structure of the suspension bridge specifically includes the following steps:

[0045] Step 1: Follow figure 1 Use the marked reinforcement method and replace the ordinary reinforcement with some cladding reinforcement, process the reinforcement cage of the bored pile 1 and the retaining wall 2, and carry out the construction of the pile wall. The cathode dewatering well 3 is constructed. The dewatering wells are arranged in a 30° circumferential direction to collect the water in the rock and soil outside the foundation pit and remove it.

[0046] Step 2: Excavation of the foundation pit. During the excavation process, check the inner wall of the enclosure structure of the foundation pit to find leakage points.

[0047] Step 3: Use wire 4 and stabilized DC power supply 5 to connect the clad steel anode 7 and the cathode dewatering well 3 near the leakage point, and apply 30V...

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Abstract

The invention belongs to the technical field of waterproofing and impermeability of deep foundation pits, and particularly relates to an active waterproof system of a suspension bridge anchorage foundation enclosure structure and a construction method.The active waterproof system of the suspension bridge anchorage foundation enclosure structure comprises a steel reinforcement cage and a cathode precipitation well, and at least one steel reinforcement on the steel reinforcement cage is replaced by a steel reinforcement anode of a coating layer; the steel reinforcement cage is a steel reinforcement cage in a cast-in-situ bored pile and / or an enclosure wall, a cathode steel bar section is arranged in the cathode dewatering well, and the coating steel bar anode and the cathode dewatering well are connected through a wire. According to the active waterproof system for the anchorage foundation enclosure structure of the suspension bridge and the construction method, a dry operation environment can be achieved before excavation of a foundation pit of the anchorage foundation enclosure structure and core filling pouring, and safe and civilized construction of an anchorage is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of waterproof and impermeability of deep foundation pits, and in particular relates to an active waterproof system and a construction method of a suspension bridge anchorage foundation enclosure structure. Background technique [0002] current technology: [0003] In recent years, with the rapid development of China's economy, the achievements of civilization have spread rapidly and widely, and the construction of long-span bridges has achieved a revolutionary leap. As an important load-bearing component of long-span suspension bridges, the design and construction of anchorages are very important. The large-diameter occlusal pile-anchorage foundation integrated with the pile and wall has the advantages of fast construction speed and economical cost, and is adopted by more and more projects. This type of foundation needs to be poured after the deep foundation pit is excavated. In order to ensure the safety ...

Claims

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Application Information

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IPC IPC(8): E02D19/06E02D19/12E02D19/18E02D5/34
CPCE02D19/06E02D19/12E02D19/18E02D5/34
Inventor 贾利强吴明远李玉彬张伟励彦德陈亮何锦章朱新聪陈宁付佰勇崔冰过超韩冬冬黄月超王昊崔立川来晓理骆朝荣
Owner 广西欣港交通投资有限公司
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