土方放坡计算公式 土石方工程 一、 人工平整场地 : S=S底+2*L 外+16 二、 挖沟槽 : 1. 垫层底部放坡 : V=L*(a+2c+kH)*H 2. 垫层表面放坡 V=L*{(a+2c+KH 1)H 1+(a+2c)H 2} 三、 挖基坑 (放坡 ) 方形 : V=( a+2c+KH)* ( b+2c+KH)*H+1/3*K 2H3 圆形 : V=∏ /3*h*(R 2+Rr+r 2) 放坡 系 数 类别 放坡起点 人工挖土 机械挖土 坑内作业 坑上作业 一、二类别 1.20 1:0.5 1:0.33 1:0.75 三类土 1.50 1:0.33 1:0.25 1:0.67 四类土 2.00 1:0.25 1:0.10 1:0.33 承台计算公式 1. 【AB+ab+(A+a)(B+b) 】*h2/6+ABh1 1.基坑土方量计算 挖基坑多用于需全部大开挖的满堂基础、独立基
. .. . .. 学习参考 目录 一、编制依据····················································3 二、工程概况····················································3 1、项目概况··················································3 2、地质地貌概况··············································4 3、设计概况 ·················································4 4、施工特点··················································4 三、施工安排···················
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