塔吊基础配筋计算

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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 =

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