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Method for reinforcing connection of diaphragm plate and girder by aid of penetrating type prestress

A diaphragm and prestressing technology, applied to bridges, bridge materials, bridge maintenance, etc., to achieve the effects of strengthening horizontal connections, improving crack resistance, and improving overall mechanical performance

Inactive Publication Date: 2017-05-31
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide a method for connecting the through-core prestressed diaphragm and the main girder, which solves the shortcomings in the connection between the existing diaphragm and the main girder

Method used

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  • Method for reinforcing connection of diaphragm plate and girder by aid of penetrating type prestress
  • Method for reinforcing connection of diaphragm plate and girder by aid of penetrating type prestress
  • Method for reinforcing connection of diaphragm plate and girder by aid of penetrating type prestress

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Experimental program
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Embodiment 1

[0025] The present invention will combine below Figure 1-4 For further description:

[0026] a. First, determine the additional location of the prestressed steel strand 3 on the main girder 1 and the diaphragm 2. The bottom one is located at 1 / 5 of the beam height, and the top one is located at 7 / 10 of the beam height.

[0027] b. After the position of the prestressed steel strand 3 is determined, start drilling on the main girder 1 and the diaphragm 2 to form an installation channel for the prestressed steel strand 3. The diameter of the channel meets the requirement that the prestressed steel strand 3 pass through smoothly Can.

[0028] c. Process the stress diffusion steel backing plate 5, the steel plate is Q345 steel plate, the structural size is: length 20cm, width 20cm, thickness 2cm. Simultaneously, the groove of the prestressed anchorage 6 is machined at the central position on the stress diffusion steel backing plate 5, the depth of the groove is about 5mm, and t...

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PUM

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Abstract

The invention discloses a method for reinforcing connection of a diaphragm plate and a girder by aid of penetrating type prestress. The method comprises steps as follows: (1) positions of additionally arranged prestress steel strands are determined on the diaphragm plate and a girder web, and then, holes are drilled in the girder web and the diaphragm plate to form mounting channels for prestress steel strands; (2) slots are formed in two ends of each mounting channel, and stress-dispersing steel cushion plates are mounted in the slotted positions; (3) the prestress steel strands penetrate through the channels in the girder and the diaphragm plate; steel strand anchoring devices are mounted; steel strands are tensioned. After external prestress is added between the girder and the diaphragm plate, connection between the girder and the diaphragm plate is effectively enhanced, so that the diaphragm plate prestores certain press stress when not bearing load of a vehicle, pulling stress produced under constant action of vehicle load is overcome, the cracking resistance of the diaphragm plate is effectively improved, the rigidity of the diaphragm plate is improved, the horizontal linkage is enhanced, and the overall stressing performance of a bridge is effectively improved.

Description

technical field [0001] The invention relates to a method for connecting a through-core prestressed reinforced transverse diaphragm and a main beam, and belongs to the field of civil engineering structure reinforcement. Background technique [0002] With the increase of the service life of the bridge, the bearing capacity of the bridge structure gradually degrades, especially in the current diseased bridges in our country, the girder bridge accounts for the majority, and the transverse connection between the main girders is weakened or disappears, making the main structure of the bridge The synergistic force between the bridges is seriously affected, which weakens the overall mechanical performance of the bridge span structure and further aggravates the bridge disease. [0003] At present, the domestic bridge reinforcement field has fully realized the importance of the diaphragm between the main girders to the overall stress of the bridge span structure, and many reinforcemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00E01D101/32
CPCE01D22/00E01D2101/32
Inventor 路国运赵云川张岩弓磊秦宇刘沛允杨会伟曹瑞东陈鹏程
Owner TAIYUAN UNIV OF TECH
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