混凝土墙能承重多少

2025-03-29 17:03:38
推荐回答(5个)
回答1:

250cm厚的C30钢筋混凝土墙,墙高3米,大约能承受300吨压力。

混凝土,简称为“砼(tóng)”:是指由胶凝材料将集料胶结成整体的工程复合材料的统称。通常讲的混凝土一词是指用水泥作胶凝材料,砂、石作集料;与水(可含外加剂和掺合料)按一定比例配合,经搅拌而得的水泥混凝土,也称普通混凝土,它广泛应用于土木工程。

回答2:

墙厚应该是250mm吧,钢筋混凝土剪力墙的承载能力和诸多因素有关,混凝土等级、钢筋等级、抗震等级、环境等级等等,我先按250X1000的柱子给你算一下吧:
1 正截面承载力计算:Z-1

1.1 基本资料
1.1.1 工程名称:工程一
1.1.2 轴向压力设计值N = 3500kN Mx = 0kN·m My = 0kN·m
构件的计算长度 Lox = 3000mm Loy = 3000mm
1.1.3 矩形截面 截面宽度 b = 250mm 截面高度 h = 1000mm
1.1.4 采用对称配筋,即:As' = As
1.1.5 混凝土的强度等级:C30 轴心抗压强度设计值 fc = 14.33N/mm�
钢筋抗拉强度设计值 fy = 360N/mm� 抗压强度设计值 fy' = 360N/mm�
弹性模量 Es = 200000N/mm� 相对界限受压区高度 ζb = 0.518
1.1.6 纵筋的混凝土保护层厚度 c = 15mm 全部纵筋最小配筋率 ρmin = 0.50%

1.2 轴心受压构件验算
1.2.1 钢筋混凝土轴心受压构件的稳定系数 φ
Lo/b = Max{Lox/bx, Loy/by} = Max{3000/1000, 3000/250} = Max{3, 12} = 12
φ = 1 / [1 + 0.002 * (Lo/b - 8) ^ 2] = 0.969
1.2.2 矩形截面面积 A = b * h = 250*1000 = 250000mm�
轴压比 Uc = N / (fc * A) = 3500000/(14.33*250000) = 0.98
1.2.3 纵向钢筋最小截面面积
全部纵向钢筋的最小截面面积 As,min = A * ρmin = 250000*0.50% = 1250mm�
一侧纵向钢筋的最小截面面积 As1,min = A * 0.20% = 250000*0.20% = 500mm�
1.2.4 全部纵向钢筋的截面面积 As' 按下式求得:
N ≤ 0.9 * φ * (fc * A + fy' * As') (混凝土规范式 7.3.1)
As' = [N / (0.9 * φ) - fc * A] / (fy' - fc)
= [3500000/(0.9*0.969)-14.33*250000]/(360-14.33)
= 1245mm� ≤ As,min = 1250mm�,取 As' = As,min

你看,极限也就是3500KN,也就是350吨

回答3:

一、看结构如果你家是框架结构,那恭喜你,所有的墙都能拆。但一般框架结构较少,因为一般现有二手房以混合结构居多。二、、看墙厚承重墙是一砖墙,即240厚,加抹灰粉刷等等,一般在300左右厚.而非承重墙一般是半砖,即120厚,当然也有更薄的.但也不排除某些非承重墙做的比较后.三、看材质看墙的材质,空心砖砌筑的不是承重墙.而混凝土的一般来说是承重墙的可能性较大。四、看梁看墙的上方是否有梁,如果有梁,梁的粗细很有关系。梁有主梁、次梁之分。主梁的梁截面较大,也就是梁比较粗。其下的墙多半是承重墙。综上所述是一些基本的排查判断方式,并不能100%准确,但基本八九不离十。另外,承重墙上开门洞是可以的,门洞上要加过梁。门洞大小要根据承重墙尺寸而定。
ps:房型图是无法判断承重墙的。只有结构图才可以。

回答4:

C30混凝土
抗压强度fck=20.1MPa
抗拉强度ftk=2.01MPA
弹性模量Ec=30000MPa
工程上一般近似取1MPa=10kg/cm2,那C30的抗压强度大约是每平方厘米200公斤也就是每平方米2000吨

回答5:

这个压力我暂时算不出来,但是可以纠正你一下,据我所知这种墙叫剪力墙,不叫混凝土墙。当然,可能有其它的例外,欢迎赐教。

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