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Construction method of bridge prestressed intelligent tension grouting system

An intelligent tensioning and prestressing technology, used in bridges, bridge construction, bridge materials, etc., can solve the problems of increased construction costs, increased vacuum equipment and vacuum steps, etc.

Active Publication Date: 2020-11-03
包头市公路工程股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, vacuum-assisted grouting firstly requires the corrugated pipe to be very airtight, and secondly, the addition of vacuuming equipment and vacuuming steps greatly increases the construction cost, and the complete set of equipment for the vacuum-assisted grouting system is all imported

Method used

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  • Construction method of bridge prestressed intelligent tension grouting system
  • Construction method of bridge prestressed intelligent tension grouting system
  • Construction method of bridge prestressed intelligent tension grouting system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Embodiment 1 Pre-grouting agent performance test

[0066] Select a transparent plastic pipe with a length of 100m and an inner diameter of 10cm as the prestressed pipe for testing. The prestressed tendons pass through the axial center of the transparent plastic pipe, and the two ends are fixed on the sealing plug of the transparent plastic pipe mouth. Continuously inject the pre-grouting agent into the transparent plastic tube through the grouting hole, the pre-grouting agent flows out from the grouting hole on the sealing plug at the other end of the transparent plastic tube, inject the pre-grouting agent in a cycle for 30 minutes, and open the seal at one end of the transparent plastic tube plug, discharge the pre-compression agent in the transparent plastic tube, and install the sealing plug. The pre-compacting agent consists of 200 kilograms of sodium edetate, 400 kilograms of sodium bicarbonate, 500 kilograms of trisodium phosphate, 900 kilograms of triethanolamine...

Embodiment 2

[0069] The construction method of bridge prestressed intelligent tension grouting system includes the following steps:

[0070] (1) Use the prestressed intelligent tensioning system for prestressed steel strand tensioning construction;

[0071] 1.1 Prepare the limit plate, anchorage, clip, computer (pre-installed WindowsXP operating system, self-contained wireless network adapter), three-phase cable, parasol, etc. that can be used with the tensioning system must be fully prepared.

[0072] 1.2. Check the equipment against the tensioning system list, and make sure that the equipment is in good condition and the accessories are complete.

[0073] 1.3. Check the serial number of the jack. Since the jacks are uniformly calibrated before leaving the factory, you must pay attention to the correct calibration formula when using them.

[0074] 1.4. Determine the beam and slab to be stretched.

[0075] 1.5. Conduct technical clarification and learn to be familiar with the system soft...

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Abstract

The invention discloses a bridge prestressed intelligent tension grouting system construction method which includes the steps: (1) performing prestressed steel strand tension construction by a prestressed intelligent tension system; (2) plugging and fixing a prestressed steel strand; (3) performing grouting construction by an intelligent greater circulation grouting system: pretreating a prestressed pipeline by pre-grouting agents, filling the prestressed pipeline with the pre-grouting agents, performing circulation flow for 0.5-1 hour, discharging the pre-grouting agents flowing in the prestressed pipeline, and immediately performing grouting construction operation by grouting materials. The pre-grouting agents are combined with the grouting materials, the gap between the inner wall of the prestressed pipeline and the steel strand is pretreated by the pre-grouting agents, the prestressed pipeline is grouted, air bags formed among the grouting materials and the inner wall of the prestressed pipeline after grouting due to air in the prestressed pipeline can be effectively eliminated in the grouting process, so that safety and reliability of a bridge can be improved, and the servicelife of the bridge can be prolonged.

Description

technical field [0001] The invention relates to the technical field of bridge construction. Specifically, it is the construction method of bridge prestressed intelligent tension grouting system. Background technique [0002] To ensure the reliability, safety and service life of the bridge, what needs to be done is to build an effective prestressed bridge. A large number of prestressed bridge surveys and tests have shown that the hidden dangers of the quality of prestressed bridges mainly come from irregular prestressed tensioning construction techniques. And the lack of effective grouting quality control means, the establishment of effective prestress is directly related to the safety, reliability and service life of the bridge. In post-tensioning prestressing construction, it is divided into two steps: prestressing tensioning construction and corrugated pipe grouting construction; firstly, the precision of tensioning is controlled through the prestressing tensioning system...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00C04B28/02C04B24/16E01D101/24E01D101/28
Inventor 石飞翔秦永清罗春德单瑞金何利清石小军王慧娟孙宏伟赵利军郭慧勤董苹赵副全刘伟张丽娜
Owner 包头市公路工程股份有限公司
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