前言钢筋混凝土烟囱在自重及外荷载(风力、地震力、日照温差、地基变形等)作用下,为具有大挠度的构筑物,P—Δ效应十分显著,正确计算其截面刚度,才能确切估计 P—Δ效应,正确计算附加弯矩,从而达到正确计算烟囱使用阶段的应力及核算水平截面的强度。 Foreword Under the effect of self-weight and external loads (wind force, seismic force, temperature difference between sunlight and ground deformation, etc.), the P-Δ effect is very significant for a structure with large deflection, and the cross-sectional stiffness of the reinforced concrete chimney can be accurately calculated to accurately estimate P— The Δ effect correctly calculates the additional bending moment so that the stress during the use phase of the chimney can be calculated correctly and the strength of the horizontal section can be calculated.