Device and method for measuring reduction factor of template lateral pressure of concrete
A technology of concrete formwork and reduction coefficient, which is applied in measuring device, using stable tension/pressure test material strength, instrument, etc., can solve the problem of side pressure of concrete formwork that has not yet been found, and achieve the effect of cost saving
Active Publication Date: 2018-03-20
BEIJING UNIV OF TECH +1
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Problems solved by technology
At present, no device and method for measuring the reduction factor of the lateral pressure of the concrete formwork have been found
Method used
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[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0023] like figure 1 As shown, a device and method for measuring the reduction factor of the side pressure of a concrete formwork, including a screw rod 1, a lock nut 2, a reaction force plate 3, a pressure sensor 4, a through-hole jack 5, a top plate 6, a ring mold 7, A compressive stress sensor 8 , a bottom plate 9 , a pressure sensor reading instrument 10 and a compressive stress acquisition system 11 . The ring mold 7 is placed on the bottom plate 9, one end of the screw 1 is consolidated with the bottom plate 9, and the other end of the screw 1 is connected with the locknut 2; as in this embodiment, two compressive stress sensors 8 are arranged facing each other and fixed on the ring mold On the inner wall of 7, two compressive stress sensors 8 are fixed on the bottom plate 9, and are respectively located in the same vertical pl...
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Abstract
The invention discloses a device and method for measuring a reduction factor of template lateral pressure of concrete and belongs to the technical field of concrete engineering structure testing. An annular mould is placed on a base plate, one end of a screw is fixedly connected with the base plate, the other end of the screw is connected with a locking nut, at least two pressure stress sensors are fixed on the inner side wall of the annular mould, at least two pressure stress sensors are fixed on the base plate, a center hole jack and a pressure sensor are centered and arranged between a counter-force plate and a top plate, the pressure sensor is connected with a pressure sensor reading device, and the pressure strain sensors are connected with a pressure strain acquisition system. The method comprises the following steps: pouring concrete; mounting the device; carrying out zero adjustment; measuring; and calculating results. The provided device and method for measuring the reductionfactor of the template lateral pressure of the concrete are easy in operation, the technical vacancy of measurement of the reduction factor is solved, and a parameter foundation is provided for further study of the template lateral pressure of the concrete.
Description
technical field [0001] The invention relates to a measuring device and a measuring method for a reduction coefficient of the lateral pressure of a concrete formwork, and belongs to the technical field of concrete engineering structure testing. Background technique [0002] In concrete engineering, formwork engineering accounts for a large proportion of the entire project in terms of construction period and cost. Occasional formwork accidents have caused huge losses to human life and the project itself. Formwork accidents are necessarily related to construction specification operations and formwork design. From the aspect of formwork design, the lateral pressure of concrete on formwork is the focus of design. Scholars at home and abroad have done a lot of theoretical and experimental research on the lateral pressure of the formwork, especially the lateral pressure of the self-compacting concrete with high fluidity. Some scholars have proposed the concept of the reduction co...
Claims
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Login to View More IPC IPC(8): G01N3/12
CPCG01N3/12G01N2203/0019G01N2203/0048G01N2203/0676
Inventor 陈誉李云开张文学王力丹贾建兴张红
Owner BEIJING UNIV OF TECH