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Construction device for compensating loss of anchor cable prestress and compensation construction method

A construction device and prestressing technology, which is applied in the direction of infrastructure engineering, buildings, sheet pile walls, etc., can solve problems such as potential safety hazards, instant tension, and inability to tension anchor cables, and achieve the effects of ensuring safety and controlling losses

Pending Publication Date: 2017-12-08
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is: in the process of compensating the prestress loss of the anchor cable in the prior art, only the secondary tension can be carried out before the anchor cable is put in, so as to realize the compensation for the prestress loss of the anchor cable, and it cannot be used during the use of the anchor cable. In order to solve the problem of instant tensioning in the anchor cable, a construction device and a compensation construction method for compensating the prestress loss of the anchor cable are provided. The prestress loss of the cable solves the problem that the anchor cable cannot be stretched to compensate for the prestress loss in the prior art, and at the same time solves the safety hazards and the anchor cable in the process of compensating for the prestress loss during the tensioning stage of the anchor cable. For the problem of fracture, when compensating for the prestress loss of the anchor cable, the anchor cable and the anchorage are always kept relatively fixed, and the jacking equipment is directly lifted to complete the prestress compensation of the anchor cable, which ensures the personal safety of the construction personnel and the safety of the anchor cable itself

Method used

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  • Construction device for compensating loss of anchor cable prestress and compensation construction method
  • Construction device for compensating loss of anchor cable prestress and compensation construction method
  • Construction device for compensating loss of anchor cable prestress and compensation construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] like figure 1 As shown in the figure, the construction device for compensating the prestress loss of the anchor cable is arranged on the outside of the support structure 4 to be anchored, including the jacking device 11 and the anchor 12 for anchoring the anchor cable 2. The anchor 12 is connected with a pressure-bearing member 13, and an installation space 15 is formed between the pressure-bearing member 13 and the anchor pier 3 for installing the jacking device 11, the jacking device 11 is installed on the anchor pier 3, and the jacking device 11 The jacking end 111 is in contact with the pressure-bearing member 13 , so that when the jacking device 11 is jacked up, the anchoring device 12 is driven to pull out the anchor cable 2 .

[0081] After the anchor cable is tensioned, it is connected to the anchor, and the anchor and the anchor cable are connected into an integrated structure and then fixed on the anchor pier, so as to ensure the stability of the anchoring pro...

Embodiment 2

[0099] The construction device of this embodiment is roughly the same as that of Embodiment 1, the difference is that the construction device of this embodiment adopts automatic control to realize the compensation of the prestress loss of the anchor cable, as follows:

[0100] like figure 1 and Image 6 As shown, the construction device 1 is also connected with an automatic control system 6, including a monitoring device 51 for monitoring the stress change of the anchor cable 2, and a control device 52 connected with a power system 53, and the monitoring device 51 is installed on the anchor cable 2. , the control device 52 is used to control the lifting of the jacking equipment 11, the control device 52 and the monitoring device 51 are connected to the automatic control module 54A at the same time, the automatic control module is installed in the control box 54, the control device 52, A hydraulic line 55 is used to connect the power system 53 and the jacking device 11 .

[0...

Embodiment 3

[0109] like figure 1 As shown in the figure, the compensation construction method to compensate the prestress loss of the anchor cable includes the construction of the anchor cable hole, the production and installation of the anchor cable, the grouting, the construction of the anchor foundation and the tension locking. During the construction of the anchor foundation, the arrangement is as follows: The above-mentioned construction device is used to compensate the prestress loss of the anchor cable after the anchor cable is tensioned and locked, and specifically includes the following steps:

[0110] a. Install an anchor cable axial force meter on the anchor cable 2 for monitoring the axial force or tensile force of the anchor cable 2;

[0111] b, the installation of the anchor 12, including connecting the pressure-bearing member 13 on the anchor 12;

[0112] c. Tension and lock the anchor cable 2;

[0113] d. Arrange the jacking device 11 on the anchor pier 3. An installatio...

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Abstract

The invention relates to the technical field of anchor cable tension construction, in particular to a construction device for compensating loss of anchor cable prestress and a compensation construction method. The construction device is arranged at the outer side of a supporting-retaining structure, and comprises jacking equipment and an anchorage tool, a compression-bearing member is connected to the anchorage tool, an installation space is formed between the compression-bearing member and an anchorage pier, the jacking equipment is installed on the anchorage pier and is in contact with the compression-bearing member, so that the jacking equipment drives the anchorage tool to draw an anchor cable while jacking, the construction device draws the anchor cable outwards through the jacking equipment, the loss of the anchor cable prestress is compensated, the problems in the prior art that the loss of prestress in the using process of the anchor cable cannot be compensated and hidden safety hazards and fracture of the anchor cable exist in the compensation process of the loss of prestress in the tension process of the anchor cable are solved so that the loss of anchor cable prestress can be continuously compensated in real time, in the compensation process, the anchor cable and the anchorage tool are kept relatively fixed all the time, and the personal safety of construction personnel and the safety of the anchor cable itself are ensured.

Description

technical field [0001] The invention relates to the technical field of anchor cable tensioning construction, in particular to a construction device and a compensation construction method for compensating anchor cable prestress loss. Background technique [0002] During the construction of the anchor cable, the anchor cable is tensioned by the tensioning equipment. After the tensioning is completed, the anchor cable is connected to the anchor, so that the anchor and the anchor cable are fixed on the anchor pier as a whole. However, due to the prestressed loss of the prestressed anchor cable due to soil creep, impact and material relaxation of the anchor cable, the prestressed value of the anchor cable is less than the design value, which threatens the stability of the anchoring project. [0003] In the prior art, the compensation for the prestress loss of the anchor cable can only be performed before the anchor cable is put into use, and the prestress compensation cannot be p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/74
CPCE02D5/74E02D2250/0046
Inventor 曲宏略吴颖刘磊刘颖胡立鹏刘懿梅迁罗浩胡沁迪
Owner SOUTHWEST PETROLEUM UNIV
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