Collision accidents of construction vehicles frequently occur during the construction of building projects. It is difficult to warn of collision risk efficiently by using the safety control...

Aluminum alloy Temcor joints have been extensively applied to aluminum alloy latticed shells, but easily experience low-cycle fatigue under the effects of strong winds. In this paper, the low-cycle fatigue performance of the Temcor joints was studied by experimental researches, finite element simulations and theoretical analyses. Six kinds of displacement loads were selected and the low-cycle fatigue failure mechanism and fatigue life of the Temcor joints were studied through experimental research. Under the effect of the low-cycle reciprocating load, the bolt went through continuous brittle failure and the failure position was located at the junction between the screw root and the nut. Consistent with the experimental situations, the finite element model was established and the simulation results were compared well with the experimental results. Then, a prediction method for low-cycle fatigue life based on the local stress-strain method was attempted, and the finite element simulation method was employed to calculate the key parameters. The low-cycle fatigue life prediction results based on the local stress-strain method accorded well with the test results.

Many manual calculations and repeated modeling are required during the traditional structural design process. However, due to the high cost, rural buildings in China cannot be professionally designed and verified by designers as urban buildings, and their safety and economy cannot easily meet the requirements. Building Information Modeling (BIM) technology and intelligent optimization algorithms can effectively improve the structural design process and reduce design costs, but their applications in the field of rural residential buildings in China are limited. Therefore, this paper presents an innovative framework that realizes the structural design of rural light steel frame structures on the BIMBase platform (widely used BIM software in China, BIMBase 2023R1.3). Based on the parametric library of structural components built on standardized component coding, the framework completes the rapid modeling of rural light steel frame structures and the interaction between the BIMBase platform and structural analysis software, SATWE. The improved two-stage simulated annealing (SA) algorithm is applied to the structural design of rural buildings to obtain a design scheme that meets the design requirements and reduces the material consumption as much as possible. Two prefabricated rural light steel frame structures were analyzed to evaluate the efficiency of the proposed framework. The results show the feasibility of the proposed framework. Compared with traditional manual design methods, the design period can be reduced by six times while maintaining comparable levels of material consumption and structural design indicators.