Architecture Engineering and Science

Through a case study analysis of the Mexico earthquake, this research reveals the hazards of period resonance. The study explores the optimal heights for steel structures and reinforced concrete frame-shear wall structures on different types of sites to optimize seismic design. By comprehensively considering the advantages and disadvantages of the building heights of steel structures and reinforced concrete frame-shear wall To achieve the optimal acidification and permeability enhancement effect for low-rank coal, this study focuses on the coking coal from the Camel Mountain mine. The results indicate that the orthogonal design and dissolution rate experiments found that the best dissolution effect is achieved when the acid mixture is composed of a mass fraction of 6% HCl solution plus a mass fraction of 9% HF solution, reacting at 35°C for 6 hours. This level has been verified to have an average dissolution rate of 4.65%. After acidification, the pore structure evolves from complex ink bottle-shaped pores to open parallel plate pores. The main clay components, calcite and dolomite, in the coal sample experience a sharp decrease and disappearance in diffraction intensity after acidification. Industrial analysis shows that the a and b values decrease by 1.103 times and 1.31 times, respectively, after acidification. The ash content is reduced from 29.3% to 20.1%, and the fixed carbon increases from 67.34% to 73.44%.structures, the safety and durability of buildings during earthquakes can be significantly improved.