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Concrete temperature stress testing machine with temperature deformation self-compensation function

A concrete temperature and stress test technology, applied in the direction of strength characteristics, material inspection products, instruments, etc., can solve the problems of errors, large errors of concrete temperature deformation, etc., and achieve the effect of accurate results and high temperature control efficiency

Active Publication Date: 2019-01-22
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the concrete temperature deformation measured by the current concrete temperature stress testing machine (TSTM) has a large error, and may even be wrong.

Method used

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  • Concrete temperature stress testing machine with temperature deformation self-compensation function
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Experimental program
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Embodiment Construction

[0019] see figure 1 , a concrete temperature stress testing machine with temperature deformation self-compensation function provided by an embodiment of the present invention, comprising:

[0020] The main body 1 of the testing machine is composed of a left fixed end 11, a right fixed end 12, and a pair of light rods connected between the left fixed end 11 and the right fixed end 12;

[0021] The concrete specimen mold 2 is made of a fixed chuck 21, a movable chuck 22, a side template 23 and a bottom template 24 connected between the fixed chuck 21 and the movable chuck 22;

[0022] Wherein, the left fixed end 11 is connected with the fixed chuck 21 through the fixed end universal joint 3, the right fixed end 12 is connected with the movable chuck 22 through the moving end universal joint 4, and the outer side of the right fixed end 12 is connected with a The servo motor 6 is connected to the load sensor 5 through bolts, and the load sensor 5 is connected to the mobile univer...

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Abstract

The invention discloses a concrete temperature stress testing machine with a temperature deformation self-compensation function and belongs to the technical field of concrete temperature stress and deformation testing simulation. A polished rod is manufactured from No.4J36 invar, a left fixed end, a right fixed end, fixed end universal joints and movable end universal joints are manufactured from No.4J36 invar, and a fixed chuck, a movable chuck and a load sensor are manufactured from No.45 steel. Parts of the testing machine are made from different steel materials, the combination length of the parts is designed according to a certain proportion, when outside temperature changes, the total temperature deformation difference generated by all steel parts of the concrete temperature stress testing machine can be zero, accordingly temperature deformation, caused by outside temperature change, of steel of the testing machine is offset, and temperature deformation self-compensation of the testing machine is achieved.

Description

technical field [0001] The invention belongs to the technical field of test simulation of concrete temperature stress and deformation, in particular to a concrete temperature stress testing machine with the function of temperature deformation self-compensation. Background technique [0002] Early temperature cracking of mass concrete is an important engineering problem. At present, the evaluation index of crack resistance is mainly evaluated by a single parameter, which cannot fully reflect the crack resistance of concrete. Concrete Temperature Stress Testing Machine (TSTM) has the function of simultaneously measuring various material mechanical parameters such as elastic modulus, creep, relaxation, cracking stress and characteristic fracture temperature. It can simulate full constraint conditions in the laboratory and establish a relationship with the engineering structure. connect. The concrete temperature stress testing machine (TSTM) is an effective equipment for compre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/00G01N33/38
CPCG01N3/00G01N33/383
Inventor 胡昱李庆斌朱贺陈凤岐
Owner TSINGHUA UNIV
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