Principle of soil mechanics! Under the condition that the total pressure of the base remains unchanged, what is the effect of increasing the buried depth of the foundation on the stress distribution in the soil?

The additional stress in soil decreases~

Why should the original gravity stress at the base elevation be deducted when calculating the additional pressure at the base

First of all, we should know that there are two reasons for the deformation of foundation soil: 1. External cause, that is, the building load causes additional stress in the foundation; 2. Internal cause, that is, the soil itself has compressibility, so the foundation is subjected to additional pressure

If the foundation area is the same, the additional stress of the base is the same, but the buried depth is different. What is the difference between the final settlement of the two foundations? A. the buried depth is larger than the buried depth
I hope there is a theoretical explanation
It's better to have a formula

Po = P / A + RGD Rd, so Po with larger buried depth is smaller, so the settlement with larger buried depth is smaller

Mathematics application problem. Should use proportion solution
Draw a rectangular piece of land on the plan with a scale of 1:500. The length is 10 cm on the drawing. The ratio of length to width is 5:4. What is the actual area of the land

10：x＝5:4 x=8 s=10*500/100*8*500/100=2000(m2)

Hope to give me a detailed answer, and the train of thought out
It is known that | ab-2 | and | B-1 | are opposite to each other. Try to find the algebraic formula AB 1 + (a + 1) (B + 1) 1 + (a + 2) (B + 2) 1 + (a + 2008) (B + 2008)

|If ab-2 | and | B-1 | are opposite to each other, then
B-1 = 0, ab-2 = 0
b=1
a=2
therefore
AB 1 + (a + 1) (B + 1) 1 + (a + 2) (B + 2) 1 + (a + 2008) (B + 2008)
=1/2+1/2*3+1/3*4+.+1/2009*2010
=1-1/2+1/2-1/3+1/3+1/4+.+1/2009-1/2010
=1-1/2010
=2009/2010

A math problem,
The first person says "1" or "1" or "2", the second person goes on to say one or two numbers, then turns to the first person, and then goes on to say one or two numbers, so that the two people take turns repeatedly, each time no one says one or two numbers, but they can't even say three numbers. Whoever grabs 30 now will win

The key to this question is who says 27 first, and the person who says 27 will win. Because as long as he says 27, if another person says 28, you can say 29,30. If another person says 28,29, you can say 30
And so on to the front

1. There are two baskets of apples. If you take nine out of the first basket and put them in the second basket, there will be as many apple trees in the two baskets. If you take nine out of the second basket and put them in the first basket, the apples in the first basket are twice as many as those in the second basket

Suppose there are x apples in the first basket and Y apples in the second basket
X-9=Y+9
X+9=（Y-9）*2
X=63
Y=45

Write the antonyms of the underlined words in different sentences. 1. This problem is actually very easy to do. (& nbsp; & nbsp; & nbsp; & nbsp;) & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; teachers and classmates all say that he is a good boy. 2. The old hen is pecking insects in the yard. (& nbsp; & nbsp; & nbsp; & nbsp;) & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; these cucumbers will be old if they are not picked. （）

30-1-1 = 28 days. A: it takes 28 days to grow to 5cm

There are two shepherd boys a and B. A said to B, "give me one of your sheep, and my sheep number is twice as many as yours." B replied, "it's better to give me one of your sheep, and our sheep number will be the same."______ A sheep

Let B have X sheep, then a has (x + 2) sheep, x + 2 + 1 = 2 (x-1), the solution is x = 5, ∧ x + 2 = 7

Five cans of eight treasure porridge of the same weight are packed in one empty box, with a total weight of 1450g. Eight cans of eight treasure porridge are packed in two empty boxes, with a total weight of 2400g. A can of eight treasure porridge weighs several grams

Suppose a jar of eight treasures porridge has x grams
Then = - 24002) / 5x
The solution is x = 250
So a can of eight treasures porridge weighs 250 grams

Principle of soil mechanics! Under the condition that the total pressure of the base remains unchanged, what is the effect of increasing the buried depth of the foundation on the stress distribution in the soil?