The calculation of the stone mainly includes the calculation of the bending resistance of the hanging plate itself and the shear calculation of the connection between the hanging plate and the hanging pin. Sometimes the thermal cracking stress of the stone should also be calculated. The calculation method is related to the dry hanging method of the stone. This article uses the back-bolt dry hanging stone fixing system to illustrate. The loads on the stone slab include horizontal wind loads and seismic loads, vertical seismic loads and stone weight. And thermal cracking stress caused by temperature changes. The typical installation system of the back-bolt type dry-hanging stone is to fix the stone by two sets of four (four groups) hanging pieces, wherein the two sets of hanging pieces on the stone support the weight of the stone and restrain the stone in the direction perpendicular to the stone plane. The lower two sets of pendants only act to constrain the stone in a direction perpendicular to the plane of the stone. When calculating the bending resistance of stone, the stress should be calculated according to the four-point support plate. The calculation value of the maximum bending stress obtained by calculating the side lengths a0 and b0 should not exceed the design value of the bending strength of the stone board; when the shear stress generated by the back bolt part on the stone board is subjected to shear calculation, it is generally based on the corresponding empirical formula. The calculation requires that the standard value of the shear stress of the slab is not greater than the design value of the shear strength of the sheet. It should be noted that the vertical shear stress is only borne by the two sets of pendants in the upper row, rather than by all four sets of pendants.
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How to calculate the stone of the stone curtain wall