Briefly describe the status and importance of foundation in the project

The status and importance of the foundation in the project The foundation and foundation are the foundation of the building. Whether the choice or treatment of the foundation is correct, the quality of the design and construction quality of the foundation all directly affect the safety, economy and rationality of the building. From the perspective of safety, the foundation and the foundation are bad for the safety of the building.

Once the foundation is taken with.

The impact is enormous.

It is very difficult to remedy and deal with basic quality accidents, and sometimes even impossible to remedy. There are many examples of buildings tilting or collapsing due to the quality of the foundation. The Leaning Tower of Tiger Hill in our country

The Leaning Tower of Pisa is a typical example of a building tilting;The overall instability accident of the Truscone barn in Canada, and the serious collapse and eventual demolition of a high-rise building in Wuhan, China, due to a foundation problem, are all examples of foundation failure. From the perspective of economy, the proportion of basic engineering in the construction cost of the entire building is quite large. Generally, the foundation cost of multi-storey building that adopts shallow foundation accounts for about 15% of the construction cost, and the proportion of the foundation engineering cost of high-rise building that adopts deep foundation accounts for about 20% 30% of the total construction cost.

From the point of view of rationality, the rational choice of the basic form of the building is the key to ensure the safety and economy of the foundation. However, there is still a lot of work to be done on how to rationally choose the basic form. In the past 20 years, many new basic forms have been proposed at home and abroad, and these works have provided technical support for the rational selection of basic forms.

Foundations and foundations are the foundations of a building. Whether the choice or treatment of the foundation is correct, the quality of the design and construction quality of the foundation all directly affect the safety, economy and rationality of the building.

From the perspective of safety, the worst impact of foundation and foundation on the safety of buildings is huge, once the foundation and foundation quality accident occurs.

Failure to deal with them is difficult and sometimes irremediable.

From the economic point of view, the foundation engineering accounts for a considerable proportion of the construction cost of the whole building, and the foundation cost of the multi-storey building with shallow foundation generally accounts for 15% and 20% of the construction cost, and the high-rise building with deep foundation is adopted.

The proportion of the cost of basic works in the total construction cost is 20% and 30%.

From the perspective of economy, the reasonable choice of the foundation form of the building is the key to ensure the safety and economy of the foundation.

First of all, it is necessary to make it clear that foundation and foundation are two different concepts! The foundation refers to the natural material that bears the foundation, which is generally unchangeable, and the foundation is artificially designed, such as the common independent foundation, strip foundation, raft foundation, etc.! The entire weight of the main body of the building is pressed on the foundation, and the foundation is borne by the foundation, which shows its importance!!

I don't know if you can understand?

The foundation is the layer of soil below the foundation, and its role is to bear the full load from the foundation.

The foundation is the load-bearing member of the building buried below the ground, which is an important part of the building, and its role is to bear all the loads handed down by the building, and transfer these loads to the soil layer below along with the self-weight.

The soil or rock mass below the foundation that bears the full load of the building is called the foundation. The foundation is not an integral part of the building, but it plays a very important role in ensuring the durability of the building. is part of the earth.

The soil (or rock mass) that supports the superstructure load transmitted by the foundation. In order to make the building safe and normal use without being damaged, the foundation is required to be not damaged under the load; The deformation of the soil layer that makes up the foundation due to expansion and contraction, compression, frost heave, collapsibility and other reasons should not be too large.

Ground treatment. In architecture, the treatment of the foundation is very important, and whether the superstructure has a solid foundation has an irreplaceable role. It is not an exaggeration to say that the foundation of the building is not good enough and the superstructure is likely to collapse, and the main purpose of foundation treatment is to adopt various foundation treatment methods to improve the foundation condition.

The objects of foundation treatment are weak foundations and special soil foundations. China's "Code for Design of Building Foundations" (GBJ7 89) clearly stipulates that "weak foundation refers to the foundation mainly composed of silt, silty soil, alluvial soil, miscellaneous fill or other highly compressible soil layers".

For the construction of the foundation of various buildings, the foundation and foundation are fundamental, and poor construction will lead to serious problems, such as:

Structures are sinking, tilting or even collapsing.

The upstairs guy is right, and if that's all I can say, what exactly do you want to ask? I used to do basic engineering skills, and now it's time to budget, and I still know a lot about foundations.

As can be seen from Figure 1-1, the superstructure load will be transmitted to the foundation through the walls and columns, and then from the foundation to the foundation. This shows the importance of the foundation. The foundation is a very important part of the building, and it should have sufficient strength, stiffness and durability to ensure the safety and service life of the building.

Although the foundation is not an integral part of the building, its quality will directly affect the safety of the entire building. Practice has proved that many of the accidents of buildings are related to the foundation, ranging from cracking and tilting of the superstructure to the collapse of the building, endangering life and property safety.

The construction of foundation foundation should fully grasp the engineering nature of foundation soil, and strictly follow the quality requirements of foundation design and construction specifications to avoid engineering accidents. The foundation is located below the ground, which is a concealed project, and in the event of a construction quality accident, remediation and treatment are often much more difficult and sometimes impossible than the superstructure. The cost and duration of the foundation engineering account for the proportion of the total construction cost and the total construction period are related to a variety of factors, generally accounting for 20% 25%, when the high-rise building or the foundation is treated, the cost is higher, the construction period is longer, therefore, the foundation is of great significance in the construction of the building conscientiously and responsibly.

Brother Sen's answer]: The foundation is the enlarged member of the bottom of the building that is in direct contact with the soil, and it is the substructure of the building. It takes all the loads of the building superstructure and transmits these loads to the foundation along with its own weight.

The foundation is the soil layer that bears the load handed down by the foundation, it does not belong to the component of the building, it is the soil layer that bears the stress and strain generated by the load of the building, and the stress and dust bond strain of the foundation decrease with the increase of the depth of the soil layer, and it can be ignored after reaching a certain depth.

The design and construction quality of foundations and foundations affect the quality of the whole structure; Foundation works are concealed works, and if there are defects, it is more difficult to discover, and it is more difficult to make up or repair; The progress of foundation engineering construction often controls the construction progress of the entire structure; The cost of foundation engineering usually accounts for a considerable proportion of the cost of the whole fiber and the structure.

Basic provisions for the design of foundations:

The foundation calculation of all buildings shall meet the requirements of the bearing capacity calculation;

Grade A and Grade B buildings should be designed according to the deformation of the foundation; Waiter.

Class C buildings generally do not need to carry out deformation verification, and special circumstances need to be checked;

High-rise buildings, high-rise structures, retaining walls, and buildings on slopes that are often subject to horizontal loads should be checked for stability;

The stability of foundation pit engineering should be checked;

When the groundwater is shallow, and there is a problem of floating on the floor in the basement or underground structure of the building, the anti-floating calculation is carried out.

A foundation is an enlarged part of a house that is based on a foundation in which the walls or columns are buried in the ground. The design and inspection of foundations is an important part of the work of construction engineers.

The part of the building that is buried below the ground is called the foundation. The soil layer that bears the load from the foundation is called the foundation, the first layer of soil located under the bottom surface of the foundation is called the bearing layer, and the soil layer below it is called the substratum. Foundations and foundations are underground concealed projects, which are the foundation of buildings, and their survey, design and construction quality are related to the safety and normal use of the entire building.

Before the building design, the engineering geological survey of the building site must be carried out, and the physical and mechanical properties of the foundation (rock) must be tested, so as to make a correct evaluation of the engineering geological conditions of the site, which is a prerequisite for good design and construction. Therefore, China has long stipulated that no design can be made without a survey report, and no construction can be carried out without design drawings.

According to the depth of embedding, the foundation can be divided into two categories: shallow foundation and deep foundation. Generally, the buried depth is less than 5m for shallow foundations, and more than 5m for deep foundations. It can also be divided by construction method:

The foundation built by ordinary foundation pit excavation and open pit drainage method is called shallow foundation, such as the wall foundation of brick-concrete structure, the box foundation of high-rise buildings (the buried depth may be greater than 5m), etc.; The foundation that is buried in the deep foundation by special construction methods is called a deep foundation, such as pile foundation, caisson, underground diaphragm wall, etc.

The foundation is the premise of the foundation, and the foundation is the purpose of the foundation. The foundation is the soil layer where the project is located, which determines the amount of load that can be withheld.

The foundation is the soil layer of the site that directly supports the building, and the foundation is the structural component that transmits the various actions of the structure to the foundation. It can be seen that the foundation and the foundation are closely related and interdependent.

The soil layer that serves as the foundation of a building is divided into rock, gravel soil, sand, silt, clayey soil and artificial fill. There are two types of foundations: natural foundations and artificial foundations (composite foundations). A natural foundation is a natural layer of soil that does not need to be reinforced by man.

Artificial foundations need to be reinforced, and there are stone chip cushions, sand cushions, mixed ash backfill and then tamping, etc.

The difference between foundation engineering and foundation engineering, and what are their classifications.

The difference between foundation engineering and foundation engineering, what are their classifications, 1. The concept is different. Foundation refers to the soil or rock mass that supports the foundation underneath the building. Foundation refers to the load-bearing member that the bottom of the building is in contact with the foundation.

Foundation foundation refers to the enlarged part of the wall or column buried in the ground of a foundation-based house. The design and inspection of foundations is an important part of the work of construction engineers. 2. The role is different.

The function of the foundation is to transfer the load from the upper part of the building to the foundation. The foundation must be strong, stable and reliable. The part of the structural component below the ground level of the engineering structure is used to transfer the superstructure load to the foundation, and is an important part of the house, bridge, dock and other structures.

Foundation: Foundation: 3. The basic depth is different.

In foundation engineering, pile foundation is a very important part, the category of pile foundation is simply divided into end bearing pile and friction pile, according to the different design of different pile types of soil, specifically concrete pile, cast-in-place pile, etc., the building is driven to the bearing layer by pile foundation to ensure the stability of the building. At present, most of the high-rise residential buildings and industrial plants in front of the front are constructed with pile foundations. "Foundation" is a part of the soil (rock mass) that bears the load of the structure, and its depth range is times the width of the foundation (width refers to the short side of the ground size of the foundation), and its width range is about multiple times the width of the foundation, depending on the shape and load of the foundation.