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As an important equipment in the construction field, cuplock scaffold plays an important role in the construction process. As a scaffold connecting member, cuplock joint is of great importance. In order to explore the rotational stiffness non-linear characteristics changing features of different structural forms of cuplock joint in different tightening torque condition under different condition of load, ANSYS is used to establish four kinds of cuplock joint models with different forces to simulate the real force situation. By setting the different applying condition, that is, the cuplock is loaded at a certain distance from the cuplock joint in a certain direction until the cuplock is damaged, and considering the gap between the cross bar joint and the vertical bar, the differences in the influence of the structural form and tightening torque on the rotation stiffness of the cuplock under different load conditions are compared. It is significantly important to improve the accuracy of calculating bearing capacity and stability of the cuplock steel tubular scaffolding.

Temperature stress is one of the important causes of concrete structure cracking. In order to study the development law of temperature field and temperature effect of prestressed concrete beam bridge under sunshine load, taking the construction of a prestressed concrete beam bridge as an example, ADINA finite element software was used for solid simulation and compared with the measured value. The results show that the temperature curve of each point inside and outside the beam is consistent with that of the ambient temperature, but it has some hysteresis. The temperature stress distribution of the beam body calculated by using the temperature gradient in the current code is approximately the same as the measured value. The top and bottom plates are compressed, and the web plate produces large tensile stress.