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近年来,随着改革开放的不断深入,人们的经济文化生活水平日益提高,为美化生活环境,有一个温馨的小空间,无论新房还是旧房,都流行着两个字眼——装修。但在装修的同时,往往忽视了房屋本身的一些结构与技术问题,诸如: 一、楼面地铺地板砖或花冈岩等块料面层。现以3.9m开间,楼板采用92ZG401,YKB3951(冷拔低碳钢丝甲级Ⅱ组配筋),铺大理石地面为例。 a.YKB3951允许荷载为:b.铺大理石荷载计算: 大理石面层:0.56KN/m~2 水泥砂浆:0.5KN/m~2 石灰砂浆:0.25KN/m~2 活荷载:1.5KN/m~2荷载值:γ_GGk+γ_QQk=1.2×(0.56+0.25+0.5×2)+1.4×1.5=2.172+2.1=3.872KN/m~2短期组合值:G_k+Q_k=(0.56+0.25+0.5×2)+1.5=3.31KN/m~2长期组合值:G_k+ΨqQ_k=1.81+0.5×1.5=2.56KN/m~2经a,b比较,长期组合值大于允许荷载
In recent years, with the continuous deepening of reform and opening up, people’s economic and cultural living standards have been increasing day by day. There is a warm and small space for beautifying the living environment. Both new and old houses are popularized in two words - decoration. However, renovation at the same time, often overlooked some of the structure and technical problems of the house itself, such as: First, the floor floor tiles or granite slab bedding. Now 3.9m room, the floor 92ZG401, YKB3951 (cold drawn low carbon steel wire armor Grade Ⅱ Group), shop marble flooring as an example. a.YKB3951 Allowable load: b. Marble load calculation: Marble surface: 0.56KN / m ~ 2 Cement mortar: 0.5KN / m ~ 2 Lime mortar: 0.25KN / m ~ 2 Live load: 1.5KN / 2 Load value: γ_GGk + γ_QQk = 1.2 × (0.56 + 0.25 + 0.5 × 2) + 1.4 × 1.5 = 2.172 + 2.1 = 3.872KN / m 2 Short Term Combination Value: G_k + Q_k = (0.56 + 0.25 + 0.5 × 2 ) + 1.5 = 3.31KN / m ~ 2 long-term combination value: G_k + ΨqQ_k = 1.81 + 0.5 × 1.5 = 2.56KN / m ~ 2 By a, b comparison, long-term combination value is greater than allowable load