塔吊基础配筋计算

Calculation for tower crane foundation 塔式起重机基础计算书

Contents目录

1. Design basis设计依据 (1)

2. Stability calculation稳定性验算 (2)

3. Forces and reinforcement calculation内力及钢筋计算 (4)

1. Design basis设计依据

1. Design rules for tower cranes(GB/T13752-1992)

《塔式起重机设计规范》(GB/T13752-1992)

2. Compilation and introduction of technical specification for concrete foundation engineering of tower crane(JGJ/T187-2009)

《塔式起重机混凝土基础工程技术规程》(JGJ/T187-2009)

3. Code for design of concrete structures(GB 50010-2010)

《混凝土结构设计规范》(GB 50010-2010)

4. Code for design of building foundation(GB 50007-2011)

《建筑地基基础设计规范》(GB 50007-2011)

5. Operation manual of Tower Crane

《塔式起重机使用说明书》

2. Stability calculation稳定性验算

1.Contents计算内容

Calculate foundation base on GB/T13752-1992:

依据GB/T13752《塔式起重机设计规范》相关要求进行计算:

1)Calculate on work status and non-work status respectively;按塔机工作状态和非工作状态

载荷分别进行基础计算；

2)Checking anti-overturning stability and ground compressive stress;抗倾覆稳定性验算及地

面压应力验算；

Calculation diagram计算简图

Basic parameters基本参数

Parameter

参数

Fk(kN) Mk(kN·m) Fkv(kN) Wind speed

风速

Work status工作状态

1092 4147 39 (20m/s)

Non-work status非工

912 3856 137 作状态

(42m/s)

1.1.1 Anti-overturning stability calculation抗倾覆稳定性验算：

e = (Mv + Fh × h) / (Fv + Fg) ≤ b / 4

Where: e - eccentricity, distance from the ground reaction force to the foundation center. Unit: m

式中:e--偏心距,即地面反力的合力到基础中心的距离.单位:m

Mv- tower bending moment acting on the foundation塔机作用在基础上的弯矩, Mv = 3856 × 1.2 = 4627KN.m

Fh- tower horizontal load acting on the foundation塔机作用在基础上的水平载荷, Fh = 137 × 1.2 = 164KN

Fv- tower vertical load acting on the foundation塔机作用在基础上的垂直载荷, Fv = 912 × 1.0 = 912KN

Fg- tower crane foundation weight塔机基础重量: Fg = 9 × 9 × 1.8 × 25 × 1.0 = 3645KN

h- tower crane foundation thickness塔机基础厚度: h = 1.8m

b- tower foundation side length塔机基础边长: b = 9m

Put into the data, we have代入式中，得:

e = (Mv + Fh × h) / (Fv + Fg) = (4627 +137 × 1.8) / (912 +3645) = 1.07 ≤ 9/4 = 2.25m,

meet the anti-overturning stability requirement.满足抗倾覆验算。

1.1.2 Ground compressive stress checking calculation地面压应力验算:

Pb = 2 (Fv + Fg) / 3 × b × L

Where: L-distance from ground reaction force to the edge of foundation

式中：L-地面反力的合力到基础边缘的距离

L = B/2-e = 9/2-1.07 = 3.43m

Fv, Fg values as above.

Fv,Fg 数值同上.

Put into the data, we have:

代入数据,得:

Pb = 2 (Fv + Fg) / 3 × b × L = 2 × (912 +3645) / (3 × 9 × 3.43) = 99 <130kPa, meet the capacity requirement满足要求。

1.2 Working status工作状态

1.2.1 Anti-overturning stability calculation抗倾覆稳定性验算

e = (Mv + Fh × h) / (Fv + Fg) ≤ b / 4

Where: e - eccentricity, distance from the ground reaction force to the foundation center. Unit: m

式中:e--偏心距,即地面反力的合力到基础中心的距离.单位:m

Mv- tower bending moment acting on the foundation塔机作用在基础上的弯矩, Mv = 4147 × 1.2 = 4976KN.m

Fh- tower horizontal load acting on the foundation塔机作用在基础上的水平载荷, Fh = 39 × 1.2 = 47KN

Fv- tower vertical load acting on the foundation塔机作用在基础上的垂直载荷, Fv = 1092 × 1.0 =