Strain computer-controlled beam support and change method

A strain control, computer technology, applied in building maintenance, construction, building construction, etc., can solve the problems of consuming the energy and time of technicians, affecting the safety and durability of the structure, and danger to the structure and operators, and achieves convenient construction. The effect of rapidity, low equipment cost, and safety guarantee

Active Publication Date: 2007-10-17
李今保
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For important structures with large loads and small deformation requirements, hydraulic jacks are currently used in underpinning construction, such as mechanical equipment such as hydraulic jacks with additional stress test instruments, to apply controlled jacking force for unloading. Due to the defects of oil return and oil leakage in hydraulic jacks , which makes it difficult to control the force value during the construction process. It must be continuously monitored, which consumes a lot of energy and time for technicians. The jacking force cannot be constant, and it is impossible to combine the applied jacking force with the strain of the structure during the unloading process. , to achieve the purpose of safe and a

Method used

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  • Strain computer-controlled beam support and change method
  • Strain computer-controlled beam support and change method
  • Strain computer-controlled beam support and change method

Examples

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Embodiment Construction

[0030] Take the underpinning of reinforced concrete frame columns as an example: a project is a 19-story frame shear wall structure. Due to construction reasons, the concrete strength of the fifth-story frame column structure does not meet the design requirements of C30. The measured concrete strength is 16.7MPa. At this time, the main body has Completed. The construction unit disagreed with the reinforcement method that left any traces, so it was finally decided to use the replacement method to reinforce the frame column structure. That is to use a reliable support system to remove the low-strength concrete of the frame column and replace it with concrete that meets the design requirements.

[0031] 1.) Determine the position where the frame column structure needs to be replaced, investigate the cross-sectional size of the structural column, the measured concrete strength, the number and specification of reinforcement, the upper load and distribution, etc.,

[0032] 2.) Dete...

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PUM

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Abstract

An underpin method of building beam column, which is added with a strain instrument and a computer control device in the beam column underpin construction. The computer control device is connected to the strain gauge affixed on the support structure and surface of displaced structure or component, when adopting mechanical jack pair structure or component to exert jack lift force value in the unloading process, the strain of structure is transported to the computer control system by the strain gauge, which can exactly response to the internal force of the underpinned structure, deformation of structure, residual deformation of structure, internal force of the supporting structure and so on, thereby the operator can know actual stressed state of the structure and adopt the dial gauge to monitor structure displacement to provide reliable reference for loading, at last achieving purpose of structure unloading and ensuring safety of the operator and structure in the beam column underpin construction.

Description

technical field [0001] The invention relates to a beam-column underpinning construction control method, in particular to a beam-column underpinning method controlled by a computer strain control system. The utility model belongs to the technical field of direct application to building structure reinforcement and transformation engineering. Background technique [0002] At present, the existing beam-column underpinnings are basically supported underpinnings, that is, the components to be replaced are not unloaded, and the adjacent structures or components are directly supported, so as to avoid large deformation and damage to the structure after replacement. for purpose. For important structures with large loads and small deformation requirements, hydraulic jacks are currently used in underpinning construction, such as mechanical equipment such as hydraulic jacks with additional stress test instruments, to apply controlled jacking force for unloading. Due to the defects of oi...

Claims

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Application Information

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IPC IPC(8): E04G23/02
Inventor 李今保
Owner 李今保
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