Measuring device of cross-section temperature field of double circular steel tube concrete column and mounting method thereof
A technology for measuring device and cross-section temperature, which is applied in the direction of measuring device, thermometer, measuring heat, etc. It can solve the problems of wires passing through steel pipes and difficult to arrange temperature measuring equipment, etc., and achieve high measurement accuracy, solve measurement difficulties, and facilitate operation Effect
Inactive Publication Date: 2015-02-18
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology
[0003] In order to overcome the problem that it is not easy to arrange temperature measuring equipment for the double-circular concrete-filled steel pipe column in the fire test, the invention discloses a measuring device and installation method for the temperature field of the cross-section of the double-circular concrete-filled steel tubular column. It has the advantages of high precision and good economy. This installation method is easy to operate and solves the problem of positioning of the measuring device and the problem of wires passing through the steel pipe.
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[0017] Such as Figure 1-2 As shown, a measuring device for the cross-section temperature field of a double-round concrete-filled steel tube column is composed of a main rod (1), a support rod (2), a stabilizer rod (3), a steel bar (4) and a thermocouple (5). The main pole (1) and the supporting pole (2) are vertically connected. There is one main rod (1), 11 supporting rods (2), and the supporting rods (2) have the same length and are parallel to each other. The support rods (2) are divided into three groups. The numbers of the three groups of support rods (2) are 3, 5, and 3 respectively. The other end of each group of support rods (2) is connected by a stabilizer rod (3). overall. The main rod (1), support rods (2) and stabilizer rods (3) are made by pouring cement mortar. Reinforcing bars (4) are embedded in the main rod (1) to increase the strength and rigidity of the main rod (1). (2) The thermocouple (5) is pre-embedded for temperature measurement. The wires of the th...
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Disclosed are a measuring device of the cross-section temperature field of a circular steel tube concrete column and a mounting method thereof. The measuring device is composed of a main bar, branch bars, a stabilizing bar, steel bars and thermal couples. The main bar is connected with the branch bars perpendicularly, the branch bars are divided into three groups, and the other end of every group of the branch bars is connected into a whole through the stabilizing bar. The main bar, the branch bars and the stabilizing bar are formed by pouring cement mortar. Steel bars are pre-embedded inside the main bar, and the thermal couples are pre-embedded inside the branch bars. When the measuring device is mounted, the end portions of an inner-layer circular steel tube are provided with two grooves, the end portions of an outer-layer circular steel tube are provided with two round holes, the center line of grooves is aligned with that of the round holes, the measuring device is inserted inside the grooves of the inner-layer circular steel tube, the grooves on the inner-layer circular steel tube are sealed by welding small steel plates, and concrete is poured to the column end. The measuring device of the cross-section temperature field of the circular steel tube concrete column is simple in structure, accurate in location, good in economic efficiency and capable of well measuring the cross-section temperature field of the circular steel tube concrete column in a fire test.
Description
Technical field [0001] The invention relates to the technical field of measuring the temperature field of a double-round steel tube concrete column cross-section in a fire test. Background technique [0002] The double-round concrete-filled steel tube column is a composite column formed by setting the inner round steel pipe inside the outer round steel pipe and pouring concrete inside the two steel pipes. It has the advantages of high bearing capacity, good plasticity and toughness, and good fire resistance. In the experimental study of the fire resistance performance of the double-circular concrete-filled steel tube column, it is necessary to measure the temperature field of the cross section of the column. Because the double-circular concrete-filled steel tube column has steel pipes inside and outside, it is not easy to arrange temperature measuring equipment when measuring the temperature field of the entire section Therefore, there is a need for a cross-sectional temperature ...
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IPC IPC(8): G01K7/04
Inventor 丛术平张征韩金生王来
Owner SHANDONG UNIV OF SCI & TECH