地下室外墙计算（Basement wall calculation）.docVIP

地下室外墙计算（Basement wall calculation） This article is contributed by zhshh00120 Human defense basement wall calculation (two levels of basement) WQ9 1, calculation assumption: the vertical direction is a one-way plate, and a 1m width along the longitudinal direction is used as a computing unit. The top of the underground wall is hinged, and the basement of the underground wall is connected with the upper layer of the underground wall and the floors are hinged. The bottom of the underground wall is just connected. 2. Basic information: section width of section b = 1000 (mm), the height of a section of underground layer is high hw1 = subsurface layer height hw2 = concrete protective layer thickness C = concrete strength grade C = 30 300, 400, 40, 20 fc = (mm) mm (outside) mm (inside) mm (inside) 14.3 N/mm2 FTK = 2.01 N/was Reinforced using Ⅲ grade steel HRB400 or RRB400 fy = 360 N/was filling wall side heavy gamma = 18 KN/m3 soil saturated severe take gamma gamma sat + 1.5 = 19.5 KN/m3 soil severely water severely Coefficient of earth pressure at rest gamma = 19.5-10 = gamma w = 10 0.50 9.5 KN/m3 K0 KN/m3 10 KN/m3 ground heap load q ground wall calculation diagram as pictured, among them: outdoor floor elevation H1 = 0.3 m underground water level elevation H2 = 0.8 m (highest flood water level of underground water level) top elevation of the ground floor of a H3 = 1 m underground wall bottom elevation H4 = 4.9 m underground floor wall bottom elevation of H5 = 8.8 m 3, calculation model selection: because the H3 H1 or less, and H3 H2, or less calculation model (9) which is adopted at outdoor surface to underground layers of high groundwater Underground second layer 4, the load calculation: h1 = L1 = L2 h1, H2 = = h1 - H3 = H3 - H4 = H4, H5 = 0.5 m, 0.7 m, 3.9 m, 3.9 m outdoor floor to the roof of the H2 = distance A). B). Earth pressure cause: qt1 = K0 (gamma h1 + gamma (h2 - h1)) = qt2 = K0 (gamma h1 + gamma (L1 + h2 - h1)) = qt4 = K0 (gamma h1 + gamma (L1 + L2 + h2 - h1